Version abc70930

157 files changed, 0 insertions, 73413 deletions

diff --git a/src/aig/aig/aig.h b/src/aig/aig/aig.h
deleted file mode 100644
index 63456b5d..00000000
--- a/src/aig/aig/aig.h
+++ /dev/null
@@ -1,556 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aig.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aig.h,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __AIG_H__
-#define __AIG_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-
-#include "vec.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Aig_Man_t_            Aig_Man_t;
-typedef struct Aig_Obj_t_            Aig_Obj_t;
-typedef struct Aig_MmFixed_t_        Aig_MmFixed_t;    
-typedef struct Aig_MmFlex_t_         Aig_MmFlex_t;     
-typedef struct Aig_MmStep_t_         Aig_MmStep_t;     
-typedef struct Aig_TMan_t_           Aig_TMan_t;
-
-// object types
-typedef enum { 
-    AIG_OBJ_NONE,                    // 0: non-existent object
-    AIG_OBJ_CONST1,                  // 1: constant 1 
-    AIG_OBJ_PI,                      // 2: primary input
-    AIG_OBJ_PO,                      // 3: primary output
-    AIG_OBJ_BUF,                     // 4: buffer node
-    AIG_OBJ_AND,                     // 5: AND node
-    AIG_OBJ_EXOR,                    // 6: EXOR node
-    AIG_OBJ_LATCH,                   // 7: latch
-    AIG_OBJ_VOID                     // 8: unused object
-} Aig_Type_t;
-
-// the AIG node
-struct Aig_Obj_t_  // 8 words
-{
-    Aig_Obj_t *      pNext;          // strashing table
-    Aig_Obj_t *      pFanin0;        // fanin
-    Aig_Obj_t *      pFanin1;        // fanin
-    unsigned int     Type    :  3;   // object type
-    unsigned int     fPhase  :  1;   // value under 000...0 pattern
-    unsigned int     fMarkA  :  1;   // multipurpose mask
-    unsigned int     fMarkB  :  1;   // multipurpose mask
-    unsigned int     nRefs   : 26;   // reference count 
-    unsigned         Level   : 24;   // the level of this node
-    unsigned         nCuts   :  8;   // the number of cuts
-    int              TravId;         // unique ID of last traversal involving the node
-    int              Id;             // unique ID of the node
-    union {                          // temporary store for user's data
-        void *       pData;
-        int          iData;
-        float        dData;
-    };
-};
-
-// the AIG manager
-struct Aig_Man_t_
-{
-    char *           pName;          // the design name
-    // AIG nodes
-    Vec_Ptr_t *      vPis;           // the array of PIs
-    Vec_Ptr_t *      vPos;           // the array of POs
-    Vec_Ptr_t *      vObjs;          // the array of all nodes (optional)
-    Vec_Ptr_t *      vBufs;          // the array of buffers
-    Aig_Obj_t *      pConst1;        // the constant 1 node
-    Aig_Obj_t        Ghost;          // the ghost node
-    int              nRegs;          // the number of registers (registers are last POs)
-    int              nAsserts;       // the number of asserts among POs (asserts are first POs)
-    // AIG node counters
-    int              nObjs[AIG_OBJ_VOID];// the number of objects by type
-    int              nCreated;       // the number of created objects
-    int              nDeleted;       // the number of deleted objects
-    // structural hash table
-    Aig_Obj_t **     pTable;         // structural hash table
-    int              nTableSize;     // structural hash table size
-    // representation of fanouts
-    int *            pFanData;       // the database to store fanout information
-    int              nFansAlloc;     // the size of fanout representation
-    Vec_Vec_t *      vLevels;        // used to update timing information
-    int              nBufReplaces;   // the number of times replacement led to a buffer
-    int              nBufFixes;      // the number of times buffers were propagated
-    int              nBufMax;        // the maximum number of buffers during computation
-    // topological order
-    unsigned *       pOrderData;
-    int              nOrderAlloc;
-    int              iPrev;
-    int              iNext;
-    int              nAndTotal;
-    int              nAndPrev;
-    // representatives
-    Aig_Obj_t **     pEquivs;        // linked list of equivalent nodes (when choices are used)
-    Aig_Obj_t **     pReprs;         // representatives of each node
-    int              nReprsAlloc;    // the number of allocated representatives
-    // various data members
-    Aig_MmFixed_t *  pMemObjs;       // memory manager for objects
-    Vec_Int_t *      vLevelR;        // the reverse level of the nodes
-    int              nLevelMax;      // maximum number of levels
-    void *           pData;          // the temporary data
-    int              nTravIds;       // the current traversal ID
-    int              fCatchExor;     // enables EXOR nodes
-    int              fAddStrash;     // performs additional strashing
-    Aig_Obj_t **     pObjCopies;     // mapping of AIG nodes into FRAIG nodes
-    void (*pImpFunc) (void*, void*); // implication checking precedure
-    void *           pImpData;       // implication checking data
-    Aig_TMan_t *     pManTime;       // the timing manager
-    Vec_Int_t *      vPiIds;
-    Vec_Int_t *      vPoIds;
-    Vec_Ptr_t *      vMapped;
-    Vec_Int_t *      vFlopNums;      
-    // timing statistics
-    int              time1;
-    int              time2;
-};
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-#define AIG_MIN(a,b)       (((a) < (b))? (a) : (b))
-#define AIG_MAX(a,b)       (((a) > (b))? (a) : (b))
-#define AIG_ABS(a)         (((a) >= 0)?  (a) :-(a))
-#define AIG_INFINITY       (100000000)
-
-#ifndef PRT
-#define PRT(a,t)  printf("%s = ", (a)); printf("%6.2f sec\n", (float)(t)/(float)(CLOCKS_PER_SEC))
-#endif
-
-static inline int          Aig_Base2Log( unsigned n )             { int r; assert( n >= 0 ); if ( n < 2 ) return n; for ( r = 0, n--; n; n >>= 1, r++ ); return r; }
-static inline int          Aig_Base10Log( unsigned n )            { int r; assert( n >= 0 ); if ( n < 2 ) return n; for ( r = 0, n--; n; n /= 10, r++ ); return r; }
-static inline char *       Aig_UtilStrsav( char * s )             { return s ? strcpy(ALLOC(char, strlen(s)+1), s) : NULL; }
-static inline int          Aig_BitWordNum( int nBits )            { return (nBits>>5) + ((nBits&31) > 0);                  }
-static inline int          Aig_TruthWordNum( int nVars )          { return nVars <= 5 ? 1 : (1 << (nVars - 5));            }
-static inline int          Aig_InfoHasBit( unsigned * p, int i )  { return (p[(i)>>5] & (1<<((i) & 31))) > 0;              }
-static inline void         Aig_InfoSetBit( unsigned * p, int i )  { p[(i)>>5] |= (1<<((i) & 31));                          }
-static inline void         Aig_InfoXorBit( unsigned * p, int i )  { p[(i)>>5] ^= (1<<((i) & 31));                          }
-static inline unsigned     Aig_InfoMask( int nVar )               { return (~(unsigned)0) >> (32-nVar);                    }
-static inline unsigned     Aig_ObjCutSign( unsigned ObjId )       { return (1 << (ObjId & 31));                            }
-static inline int          Aig_WordCountOnes( unsigned uWord )
-{
-    uWord = (uWord & 0x55555555) + ((uWord>>1) & 0x55555555);
-    uWord = (uWord & 0x33333333) + ((uWord>>2) & 0x33333333);
-    uWord = (uWord & 0x0F0F0F0F) + ((uWord>>4) & 0x0F0F0F0F);
-    uWord = (uWord & 0x00FF00FF) + ((uWord>>8) & 0x00FF00FF);
-    return  (uWord & 0x0000FFFF) + (uWord>>16);
-}
-
-static inline Aig_Obj_t *  Aig_Regular( Aig_Obj_t * p )           { return (Aig_Obj_t *)((unsigned long)(p) & ~01); }
-static inline Aig_Obj_t *  Aig_Not( Aig_Obj_t * p )               { return (Aig_Obj_t *)((unsigned long)(p) ^  01); }
-static inline Aig_Obj_t *  Aig_NotCond( Aig_Obj_t * p, int c )    { return (Aig_Obj_t *)((unsigned long)(p) ^ (c)); }
-static inline int          Aig_IsComplement( Aig_Obj_t * p )      { return (int )(((unsigned long)p) & 01);         }
-
-static inline int          Aig_ManPiNum( Aig_Man_t * p )          { return p->nObjs[AIG_OBJ_PI];                    }
-static inline int          Aig_ManPoNum( Aig_Man_t * p )          { return p->nObjs[AIG_OBJ_PO];                    }
-static inline int          Aig_ManBufNum( Aig_Man_t * p )         { return p->nObjs[AIG_OBJ_BUF];                   }
-static inline int          Aig_ManAndNum( Aig_Man_t * p )         { return p->nObjs[AIG_OBJ_AND];                   }
-static inline int          Aig_ManExorNum( Aig_Man_t * p )        { return p->nObjs[AIG_OBJ_EXOR];                  }
-static inline int          Aig_ManLatchNum( Aig_Man_t * p )       { return p->nObjs[AIG_OBJ_LATCH];                 }
-static inline int          Aig_ManNodeNum( Aig_Man_t * p )        { return p->nObjs[AIG_OBJ_AND]+p->nObjs[AIG_OBJ_EXOR];   }
-static inline int          Aig_ManGetCost( Aig_Man_t * p )        { return p->nObjs[AIG_OBJ_AND]+3*p->nObjs[AIG_OBJ_EXOR]; }
-static inline int          Aig_ManObjNum( Aig_Man_t * p )         { return p->nCreated - p->nDeleted;               }
-static inline int          Aig_ManObjNumMax( Aig_Man_t * p )      { return Vec_PtrSize(p->vObjs);                   }
-static inline int          Aig_ManRegNum( Aig_Man_t * p )         { return p->nRegs;                                }
-
-static inline Aig_Obj_t *  Aig_ManConst0( Aig_Man_t * p )         { return Aig_Not(p->pConst1);                     }
-static inline Aig_Obj_t *  Aig_ManConst1( Aig_Man_t * p )         { return p->pConst1;                              }
-static inline Aig_Obj_t *  Aig_ManGhost( Aig_Man_t * p )          { return &p->Ghost;                               }
-static inline Aig_Obj_t *  Aig_ManPi( Aig_Man_t * p, int i )      { return (Aig_Obj_t *)Vec_PtrEntry(p->vPis, i);   }
-static inline Aig_Obj_t *  Aig_ManPo( Aig_Man_t * p, int i )      { return (Aig_Obj_t *)Vec_PtrEntry(p->vPos, i);   }
-static inline Aig_Obj_t *  Aig_ManLo( Aig_Man_t * p, int i )      { return (Aig_Obj_t *)Vec_PtrEntry(p->vPis, Aig_ManPiNum(p)-Aig_ManRegNum(p)+i);   }
-static inline Aig_Obj_t *  Aig_ManLi( Aig_Man_t * p, int i )      { return (Aig_Obj_t *)Vec_PtrEntry(p->vPos, Aig_ManPoNum(p)-Aig_ManRegNum(p)+i);   }
-static inline Aig_Obj_t *  Aig_ManObj( Aig_Man_t * p, int i )     { return p->vObjs ? (Aig_Obj_t *)Vec_PtrEntry(p->vObjs, i) : NULL;  }
-
-static inline Aig_Type_t   Aig_ObjType( Aig_Obj_t * pObj )        { return (Aig_Type_t)pObj->Type;       }
-static inline int          Aig_ObjIsNone( Aig_Obj_t * pObj )      { return pObj->Type == AIG_OBJ_NONE;   }
-static inline int          Aig_ObjIsConst1( Aig_Obj_t * pObj )    { assert(!Aig_IsComplement(pObj)); return pObj->Type == AIG_OBJ_CONST1; }
-static inline int          Aig_ObjIsPi( Aig_Obj_t * pObj )        { return pObj->Type == AIG_OBJ_PI;     }
-static inline int          Aig_ObjIsPo( Aig_Obj_t * pObj )        { return pObj->Type == AIG_OBJ_PO;     }
-static inline int          Aig_ObjIsBuf( Aig_Obj_t * pObj )       { return pObj->Type == AIG_OBJ_BUF;    }
-static inline int          Aig_ObjIsAnd( Aig_Obj_t * pObj )       { return pObj->Type == AIG_OBJ_AND;    }
-static inline int          Aig_ObjIsExor( Aig_Obj_t * pObj )      { return pObj->Type == AIG_OBJ_EXOR;   }
-static inline int          Aig_ObjIsLatch( Aig_Obj_t * pObj )     { return pObj->Type == AIG_OBJ_LATCH;  }
-static inline int          Aig_ObjIsNode( Aig_Obj_t * pObj )      { return pObj->Type == AIG_OBJ_AND || pObj->Type == AIG_OBJ_EXOR;   }
-static inline int          Aig_ObjIsTerm( Aig_Obj_t * pObj )      { return pObj->Type == AIG_OBJ_PI  || pObj->Type == AIG_OBJ_PO || pObj->Type == AIG_OBJ_CONST1;   }
-static inline int          Aig_ObjIsHash( Aig_Obj_t * pObj )      { return pObj->Type == AIG_OBJ_AND || pObj->Type == AIG_OBJ_EXOR || pObj->Type == AIG_OBJ_LATCH;  }
-static inline int          Aig_ObjIsChoice( Aig_Man_t * p, Aig_Obj_t * pObj )    { return p->pEquivs && p->pEquivs[pObj->Id] && pObj->nRefs > 0;                    }
-
-static inline int          Aig_ObjIsMarkA( Aig_Obj_t * pObj )     { return pObj->fMarkA;  }
-static inline void         Aig_ObjSetMarkA( Aig_Obj_t * pObj )    { pObj->fMarkA = 1;     }
-static inline void         Aig_ObjClearMarkA( Aig_Obj_t * pObj )  { pObj->fMarkA = 0;     }
- 
-static inline void         Aig_ObjSetTravId( Aig_Obj_t * pObj, int TravId )                { pObj->TravId = TravId;                         }
-static inline void         Aig_ObjSetTravIdCurrent( Aig_Man_t * p, Aig_Obj_t * pObj )      { pObj->TravId = p->nTravIds;                    }
-static inline void         Aig_ObjSetTravIdPrevious( Aig_Man_t * p, Aig_Obj_t * pObj )     { pObj->TravId = p->nTravIds - 1;                }
-static inline int          Aig_ObjIsTravIdCurrent( Aig_Man_t * p, Aig_Obj_t * pObj )       { return (int)(pObj->TravId == p->nTravIds);     }
-static inline int          Aig_ObjIsTravIdPrevious( Aig_Man_t * p, Aig_Obj_t * pObj )      { return (int)(pObj->TravId == p->nTravIds - 1); }
-
-static inline int          Aig_ObjTravId( Aig_Obj_t * pObj )      { return (int)pObj->pData;                       }
-static inline int          Aig_ObjPhase( Aig_Obj_t * pObj )       { return pObj->fPhase;                           }
-static inline int          Aig_ObjPhaseReal( Aig_Obj_t * pObj )   { return pObj? Aig_Regular(pObj)->fPhase ^ Aig_IsComplement(pObj) : 1;                              }
-static inline int          Aig_ObjRefs( Aig_Obj_t * pObj )        { return pObj->nRefs;                            }
-static inline void         Aig_ObjRef( Aig_Obj_t * pObj )         { pObj->nRefs++;                                 }
-static inline void         Aig_ObjDeref( Aig_Obj_t * pObj )       { assert( pObj->nRefs > 0 ); pObj->nRefs--;      }
-static inline void         Aig_ObjClearRef( Aig_Obj_t * pObj )    { pObj->nRefs = 0;                               }
-static inline int          Aig_ObjFaninId0( Aig_Obj_t * pObj )    { return pObj->pFanin0? Aig_Regular(pObj->pFanin0)->Id : -1; }
-static inline int          Aig_ObjFaninId1( Aig_Obj_t * pObj )    { return pObj->pFanin1? Aig_Regular(pObj->pFanin1)->Id : -1; }
-static inline int          Aig_ObjFaninC0( Aig_Obj_t * pObj )     { return Aig_IsComplement(pObj->pFanin0);        }
-static inline int          Aig_ObjFaninC1( Aig_Obj_t * pObj )     { return Aig_IsComplement(pObj->pFanin1);        }
-static inline Aig_Obj_t *  Aig_ObjFanin0( Aig_Obj_t * pObj )      { return Aig_Regular(pObj->pFanin0);             }
-static inline Aig_Obj_t *  Aig_ObjFanin1( Aig_Obj_t * pObj )      { return Aig_Regular(pObj->pFanin1);             }
-static inline Aig_Obj_t *  Aig_ObjChild0( Aig_Obj_t * pObj )      { return pObj->pFanin0;                          }
-static inline Aig_Obj_t *  Aig_ObjChild1( Aig_Obj_t * pObj )      { return pObj->pFanin1;                          }
-static inline Aig_Obj_t *  Aig_ObjChild0Copy( Aig_Obj_t * pObj )  { assert( !Aig_IsComplement(pObj) ); return Aig_ObjFanin0(pObj)? Aig_NotCond((Aig_Obj_t *)Aig_ObjFanin0(pObj)->pData, Aig_ObjFaninC0(pObj)) : NULL;  }
-static inline Aig_Obj_t *  Aig_ObjChild1Copy( Aig_Obj_t * pObj )  { assert( !Aig_IsComplement(pObj) ); return Aig_ObjFanin1(pObj)? Aig_NotCond((Aig_Obj_t *)Aig_ObjFanin1(pObj)->pData, Aig_ObjFaninC1(pObj)) : NULL;  }
-static inline int          Aig_ObjLevel( Aig_Obj_t * pObj )       { return pObj->Level;                            }
-static inline int          Aig_ObjLevelNew( Aig_Obj_t * pObj )    { return Aig_ObjFanin1(pObj)? 1 + Aig_ObjIsExor(pObj) + AIG_MAX(Aig_ObjFanin0(pObj)->Level, Aig_ObjFanin1(pObj)->Level) : Aig_ObjFanin0(pObj)->Level; }
-static inline void         Aig_ObjClean( Aig_Obj_t * pObj )       { memset( pObj, 0, sizeof(Aig_Obj_t) );                                                             }
-static inline Aig_Obj_t *  Aig_ObjFanout0( Aig_Man_t * p, Aig_Obj_t * pObj )  { assert(p->pFanData && pObj->Id < p->nFansAlloc); return Aig_ManObj(p, p->pFanData[5*pObj->Id] >> 1); } 
-static inline Aig_Obj_t *  Aig_ObjEquiv( Aig_Man_t * p, Aig_Obj_t * pObj )    { return p->pEquivs? p->pEquivs[pObj->Id] : NULL; } 
-static inline int          Aig_ObjWhatFanin( Aig_Obj_t * pObj, Aig_Obj_t * pFanin )    
-{ 
-    if ( Aig_ObjFanin0(pObj) == pFanin ) return 0; 
-    if ( Aig_ObjFanin1(pObj) == pFanin ) return 1; 
-    assert(0); return -1; 
-}
-static inline int          Aig_ObjFanoutC( Aig_Obj_t * pObj, Aig_Obj_t * pFanout )    
-{ 
-    if ( Aig_ObjFanin0(pFanout) == pObj ) return Aig_ObjFaninC0(pObj); 
-    if ( Aig_ObjFanin1(pFanout) == pObj ) return Aig_ObjFaninC1(pObj); 
-    assert(0); return -1; 
-}
-
-// create the ghost of the new node
-static inline Aig_Obj_t *  Aig_ObjCreateGhost( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1, Aig_Type_t Type )    
-{
-    Aig_Obj_t * pGhost;
-    assert( Type != AIG_OBJ_AND || !Aig_ObjIsConst1(Aig_Regular(p0)) );
-    assert( p1 == NULL || !Aig_ObjIsConst1(Aig_Regular(p1)) );
-    assert( Type == AIG_OBJ_PI || Aig_Regular(p0) != Aig_Regular(p1) );
-    pGhost = Aig_ManGhost(p);
-    pGhost->Type = Type;
-    if ( p1 == NULL || Aig_Regular(p0)->Id < Aig_Regular(p1)->Id )
-    {
-        pGhost->pFanin0 = p0;
-        pGhost->pFanin1 = p1;
-    }
-    else
-    {
-        pGhost->pFanin0 = p1;
-        pGhost->pFanin1 = p0;
-    }
-    return pGhost;
-}
-
-// internal memory manager
-static inline Aig_Obj_t * Aig_ManFetchMemory( Aig_Man_t * p )  
-{
-    extern char * Aig_MmFixedEntryFetch( Aig_MmFixed_t * p );
-    Aig_Obj_t * pTemp;
-    pTemp = (Aig_Obj_t *)Aig_MmFixedEntryFetch( p->pMemObjs );
-    memset( pTemp, 0, sizeof(Aig_Obj_t) ); 
-    Vec_PtrPush( p->vObjs, pTemp );
-    pTemp->Id = p->nCreated++;
-    return pTemp;
-}
-static inline void Aig_ManRecycleMemory( Aig_Man_t * p, Aig_Obj_t * pEntry )
-{
-    extern void Aig_MmFixedEntryRecycle( Aig_MmFixed_t * p, char * pEntry );
-    assert( pEntry->nRefs == 0 );
-    pEntry->Type = AIG_OBJ_NONE; // distinquishes a dead node from a live node
-    Aig_MmFixedEntryRecycle( p->pMemObjs, (char *)pEntry );
-    p->nDeleted++;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                             ITERATORS                            ///
-////////////////////////////////////////////////////////////////////////
-
-// iterator over the primary inputs
-#define Aig_ManForEachPi( p, pObj, i )                                          \
-    Vec_PtrForEachEntry( p->vPis, pObj, i )
-// iterator over the primary outputs
-#define Aig_ManForEachPo( p, pObj, i )                                          \
-    Vec_PtrForEachEntry( p->vPos, pObj, i )
-// iterator over the assertions
-#define Aig_ManForEachAssert( p, pObj, i )                                      \
-    Vec_PtrForEachEntryStart( p->vPos, pObj, i, Aig_ManPoNum(p)-p->nAsserts )
-// iterator over all objects, including those currently not used
-#define Aig_ManForEachObj( p, pObj, i )                                         \
-    Vec_PtrForEachEntry( p->vObjs, pObj, i ) if ( (pObj) == NULL ) {} else
-// iterator over all nodes
-#define Aig_ManForEachNode( p, pObj, i )                                        \
-    Vec_PtrForEachEntry( p->vObjs, pObj, i ) if ( (pObj) == NULL || !Aig_ObjIsNode(pObj) ) {} else
-// iterator over the nodes whose IDs are stored in the array
-#define Aig_ManForEachNodeVec( p, vIds, pObj, i )                               \
-    for ( i = 0; i < Vec_IntSize(vIds) && ((pObj) = Aig_ManObj(p, Vec_IntEntry(vIds,i))); i++ )
-// iterator over the nodes in the topological order
-#define Aig_ManForEachNodeInOrder( p, pObj )                                    \
-    for ( assert(p->pOrderData), p->iPrev = 0, p->iNext = p->pOrderData[1];     \
-          p->iNext && (((pObj) = Aig_ManObj(p, p->iNext)), 1);                  \
-          p->iNext = p->pOrderData[2*p->iPrev+1] )
-
-// these two procedures are only here for the use inside the iterator
-static inline int     Aig_ObjFanout0Int( Aig_Man_t * p, int ObjId )  { assert(ObjId < p->nFansAlloc);  return p->pFanData[5*ObjId];                         }
-static inline int     Aig_ObjFanoutNext( Aig_Man_t * p, int iFan )   { assert(iFan/2 < p->nFansAlloc); return p->pFanData[5*(iFan >> 1) + 3 + (iFan & 1)];  }
-// iterator over the fanouts
-#define Aig_ObjForEachFanout( p, pObj, pFanout, iFan, i )                       \
-    for ( assert(p->pFanData), i = 0; (i < (int)(pObj)->nRefs) &&               \
-          (((iFan) = i? Aig_ObjFanoutNext(p, iFan) : Aig_ObjFanout0Int(p, pObj->Id)), 1) && \
-          (((pFanout) = Aig_ManObj(p, iFan>>1)), 1); i++ )
-
-
-////////////////////////////////////////////////////////////////////////
-///                     SEQUENTIAL ITERATORS                         ///
-////////////////////////////////////////////////////////////////////////
-
-// iterator over the primary inputs
-#define Aig_ManForEachPiSeq( p, pObj, i )                                       \
-    Vec_PtrForEachEntryStop( p->vPis, pObj, i, Aig_ManPiNum(p)-Aig_ManRegNum(p) )
-// iterator over the latch outputs
-#define Aig_ManForEachLoSeq( p, pObj, i )                                       \
-    Vec_PtrForEachEntryStart( p->vPis, pObj, i, Aig_ManPiNum(p)-Aig_ManRegNum(p) )
-// iterator over the primary outputs
-#define Aig_ManForEachPoSeq( p, pObj, i )                                       \
-    Vec_PtrForEachEntryStop( p->vPos, pObj, i, Aig_ManPoNum(p)-Aig_ManRegNum(p) )
-// iterator over the latch inputs
-#define Aig_ManForEachLiSeq( p, pObj, i )                                       \
-    Vec_PtrForEachEntryStart( p->vPos, pObj, i, Aig_ManPoNum(p)-Aig_ManRegNum(p) )
-// iterator over the latch input and outputs
-#define Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, k )                           \
-    for ( k = 0; (k < Aig_ManRegNum(p)) && (((pObjLi) = Aig_ManLi(p, k)), 1)    \
-        && (((pObjLo)=Aig_ManLo(p, k)), 1); k++ )
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== aigCheck.c ========================================================*/
-extern int             Aig_ManCheck( Aig_Man_t * p );
-extern void            Aig_ManCheckMarkA( Aig_Man_t * p );
-extern void            Aig_ManCheckPhase( Aig_Man_t * p );
-/*=== aigDfs.c ==========================================================*/
-extern Vec_Ptr_t *     Aig_ManDfs( Aig_Man_t * p );
-extern Vec_Ptr_t *     Aig_ManDfsNodes( Aig_Man_t * p, Aig_Obj_t ** ppNodes, int nNodes );
-extern Vec_Ptr_t *     Aig_ManDfsChoices( Aig_Man_t * p );
-extern Vec_Ptr_t *     Aig_ManDfsReverse( Aig_Man_t * p );
-extern int             Aig_ManLevelNum( Aig_Man_t * p );
-extern int             Aig_ManCountLevels( Aig_Man_t * p );
-extern int             Aig_DagSize( Aig_Obj_t * pObj );
-extern int             Aig_SupportSize( Aig_Man_t * p, Aig_Obj_t * pObj );
-extern void            Aig_ConeUnmark_rec( Aig_Obj_t * pObj );
-extern Aig_Obj_t *     Aig_Transfer( Aig_Man_t * pSour, Aig_Man_t * pDest, Aig_Obj_t * pObj, int nVars );
-extern Aig_Obj_t *     Aig_Compose( Aig_Man_t * p, Aig_Obj_t * pRoot, Aig_Obj_t * pFunc, int iVar );
-extern void            Aig_ObjCollectCut( Aig_Obj_t * pRoot, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vNodes );
-extern int             Aig_ObjCollectSuper( Aig_Obj_t * pObj, Vec_Ptr_t * vSuper );
-/*=== aigFanout.c ==========================================================*/
-extern void            Aig_ObjAddFanout( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFanout );
-extern void            Aig_ObjRemoveFanout( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFanout );
-extern void            Aig_ManFanoutStart( Aig_Man_t * p );
-extern void            Aig_ManFanoutStop( Aig_Man_t * p );
-/*=== aigMan.c ==========================================================*/
-extern Aig_Man_t *     Aig_ManStart( int nNodesMax );
-extern Aig_Man_t *     Aig_ManStartFrom( Aig_Man_t * p );
-extern Aig_Obj_t *     Aig_ManDup_rec( Aig_Man_t * pNew, Aig_Man_t * p, Aig_Obj_t * pObj );
-extern Aig_Man_t *     Aig_ManDup( Aig_Man_t * p, int fOrdered );
-extern Aig_Man_t *     Aig_ManExtractMiter( Aig_Man_t * p, Aig_Obj_t * pNode1, Aig_Obj_t * pNode2 );
-extern void            Aig_ManStop( Aig_Man_t * p );
-extern int             Aig_ManCleanup( Aig_Man_t * p );
-extern void            Aig_ManPrintStats( Aig_Man_t * p );
-/*=== aigMem.c ==========================================================*/
-extern void            Aig_ManStartMemory( Aig_Man_t * p );
-extern void            Aig_ManStopMemory( Aig_Man_t * p );
-/*=== aigMffc.c ==========================================================*/
-extern int             Aig_NodeRef_rec( Aig_Obj_t * pNode, unsigned LevelMin );
-extern int             Aig_NodeDeref_rec( Aig_Obj_t * pNode, unsigned LevelMin );
-extern int             Aig_NodeMffsSupp( Aig_Man_t * p, Aig_Obj_t * pNode, int LevelMin, Vec_Ptr_t * vSupp );
-extern int             Aig_NodeMffsLabel( Aig_Man_t * p, Aig_Obj_t * pNode );
-extern int             Aig_NodeMffsLabelCut( Aig_Man_t * p, Aig_Obj_t * pNode, Vec_Ptr_t * vLeaves );
-extern int             Aig_NodeMffsExtendCut( Aig_Man_t * p, Aig_Obj_t * pNode, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vResult );
-/*=== aigObj.c ==========================================================*/
-extern Aig_Obj_t *     Aig_ObjCreatePi( Aig_Man_t * p );
-extern Aig_Obj_t *     Aig_ObjCreatePo( Aig_Man_t * p, Aig_Obj_t * pDriver );
-extern Aig_Obj_t *     Aig_ObjCreate( Aig_Man_t * p, Aig_Obj_t * pGhost );
-extern void            Aig_ObjConnect( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFan0, Aig_Obj_t * pFan1 );
-extern void            Aig_ObjDisconnect( Aig_Man_t * p, Aig_Obj_t * pObj );
-extern void            Aig_ObjDelete( Aig_Man_t * p, Aig_Obj_t * pObj );
-extern void            Aig_ObjDelete_rec( Aig_Man_t * p, Aig_Obj_t * pObj, int fFreeTop );
-extern void            Aig_ObjPatchFanin0( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFaninNew );
-extern void            Aig_ObjReplace( Aig_Man_t * p, Aig_Obj_t * pObjOld, Aig_Obj_t * pObjNew, int fNodesOnly, int fUpdateLevel );
-/*=== aigOper.c =========================================================*/
-extern Aig_Obj_t *     Aig_IthVar( Aig_Man_t * p, int i );
-extern Aig_Obj_t *     Aig_Oper( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1, Aig_Type_t Type );
-extern Aig_Obj_t *     Aig_And( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1 );
-extern Aig_Obj_t *     Aig_Latch( Aig_Man_t * p, Aig_Obj_t * pObj, int fInitOne );
-extern Aig_Obj_t *     Aig_Or( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1 );
-extern Aig_Obj_t *     Aig_Exor( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1 );
-extern Aig_Obj_t *     Aig_Mux( Aig_Man_t * p, Aig_Obj_t * pC, Aig_Obj_t * p1, Aig_Obj_t * p0 );
-extern Aig_Obj_t *     Aig_Maj( Aig_Man_t * p, Aig_Obj_t * pA, Aig_Obj_t * pB, Aig_Obj_t * pC );
-extern Aig_Obj_t *     Aig_Miter( Aig_Man_t * p, Vec_Ptr_t * vPairs );
-extern Aig_Obj_t *     Aig_MiterTwo( Aig_Man_t * p, Vec_Ptr_t * vNodes1, Vec_Ptr_t * vNodes2 );
-extern Aig_Obj_t *     Aig_CreateAnd( Aig_Man_t * p, int nVars );
-extern Aig_Obj_t *     Aig_CreateOr( Aig_Man_t * p, int nVars );
-extern Aig_Obj_t *     Aig_CreateExor( Aig_Man_t * p, int nVars );
-/*=== aigOrder.c =========================================================*/
-extern void            Aig_ManOrderStart( Aig_Man_t * p );
-extern void            Aig_ManOrderStop( Aig_Man_t * p );
-extern void            Aig_ObjOrderInsert( Aig_Man_t * p, int ObjId );
-extern void            Aig_ObjOrderRemove( Aig_Man_t * p, int ObjId );
-extern void            Aig_ObjOrderAdvance( Aig_Man_t * p );
-/*=== aigPart.c =========================================================*/
-extern Vec_Ptr_t *     Aig_ManSupports( Aig_Man_t * pMan );
-extern Vec_Ptr_t *     Aig_ManPartitionSmart( Aig_Man_t * p, int nPartSizeLimit, int fVerbose, Vec_Ptr_t ** pvPartSupps );
-extern Vec_Ptr_t *     Aig_ManPartitionNaive( Aig_Man_t * p, int nPartSize );
-extern Aig_Man_t *     Aig_ManChoicePartitioned( Vec_Ptr_t * vAigs, int nPartSize );
-/*=== aigRepr.c =========================================================*/
-extern void            Aig_ManReprStart( Aig_Man_t * p, int nIdMax );
-extern void            Aig_ManReprStop( Aig_Man_t * p );
-extern void            Aig_ObjCreateRepr( Aig_Man_t * p, Aig_Obj_t * pNode1, Aig_Obj_t * pNode2 );
-extern void            Aig_ManTransferRepr( Aig_Man_t * pNew, Aig_Man_t * p );
-extern Aig_Man_t *     Aig_ManDupRepr( Aig_Man_t * p, int fOrdered );
-extern Aig_Man_t *     Aig_ManRehash( Aig_Man_t * p );
-extern void            Aig_ManMarkValidChoices( Aig_Man_t * p );
-/*=== aigRet.c ========================================================*/
-extern Aig_Man_t *     Rtm_ManRetime( Aig_Man_t * p, int fForward, int nStepsMax, int fVerbose );
-/*=== aigScl.c ==========================================================*/
-extern Aig_Man_t *     Aig_ManRemap( Aig_Man_t * p, Vec_Ptr_t * vMap );
-extern int             Aig_ManSeqCleanup( Aig_Man_t * p );
-extern int             Aig_ManCountMergeRegs( Aig_Man_t * p );
-extern Aig_Man_t *     Aig_ManReduceLaches( Aig_Man_t * p, int fVerbose );
-/*=== aigSeq.c ========================================================*/
-extern int             Aig_ManSeqStrash( Aig_Man_t * p, int nLatches, int * pInits );
-/*=== aigShow.c ========================================================*/
-extern void            Aig_ManShow( Aig_Man_t * pMan, int fHaig, Vec_Ptr_t * vBold );
-/*=== aigTable.c ========================================================*/
-extern Aig_Obj_t *     Aig_TableLookup( Aig_Man_t * p, Aig_Obj_t * pGhost );
-extern Aig_Obj_t *     Aig_TableLookupTwo( Aig_Man_t * p, Aig_Obj_t * pFanin0, Aig_Obj_t * pFanin1 );
-extern void            Aig_TableInsert( Aig_Man_t * p, Aig_Obj_t * pObj );
-extern void            Aig_TableDelete( Aig_Man_t * p, Aig_Obj_t * pObj );
-extern int             Aig_TableCountEntries( Aig_Man_t * p );
-extern void            Aig_TableProfile( Aig_Man_t * p );
-/*=== aigTiming.c ========================================================*/
-extern void            Aig_ObjClearReverseLevel( Aig_Man_t * p, Aig_Obj_t * pObj );
-extern int             Aig_ObjRequiredLevel( Aig_Man_t * p, Aig_Obj_t * pObj );
-extern void            Aig_ManStartReverseLevels( Aig_Man_t * p, int nMaxLevelIncrease );
-extern void            Aig_ManStopReverseLevels( Aig_Man_t * p );
-extern void            Aig_ManUpdateLevel( Aig_Man_t * p, Aig_Obj_t * pObjNew );
-extern void            Aig_ManUpdateReverseLevel( Aig_Man_t * p, Aig_Obj_t * pObjNew );
-extern void            Aig_ManVerifyLevel( Aig_Man_t * p );
-extern void            Aig_ManVerifyReverseLevel( Aig_Man_t * p );
-/*=== aigTruth.c ========================================================*/
-extern unsigned *      Aig_ManCutTruth( Aig_Obj_t * pRoot, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vNodes, Vec_Ptr_t * vTruthElem, Vec_Ptr_t * vTruthStore );
-/*=== aigTsim.c ========================================================*/
-extern Aig_Man_t *     Aig_ManConstReduce( Aig_Man_t * p, int fVerbose );
-/*=== aigUtil.c =========================================================*/
-extern unsigned        Aig_PrimeCudd( unsigned p );
-extern void            Aig_ManIncrementTravId( Aig_Man_t * p );
-extern int             Aig_ManLevels( Aig_Man_t * p );
-extern void            Aig_ManResetRefs( Aig_Man_t * p );
-extern void            Aig_ManCleanMarkA( Aig_Man_t * p );
-extern void            Aig_ManCleanMarkB( Aig_Man_t * p );
-extern void            Aig_ManCleanData( Aig_Man_t * p );
-extern void            Aig_ObjCleanData_rec( Aig_Obj_t * pObj );
-extern void            Aig_ObjCollectMulti( Aig_Obj_t * pFunc, Vec_Ptr_t * vSuper );
-extern int             Aig_ObjIsMuxType( Aig_Obj_t * pObj );
-extern int             Aig_ObjRecognizeExor( Aig_Obj_t * pObj, Aig_Obj_t ** ppFan0, Aig_Obj_t ** ppFan1 );
-extern Aig_Obj_t *     Aig_ObjRecognizeMux( Aig_Obj_t * pObj, Aig_Obj_t ** ppObjT, Aig_Obj_t ** ppObjE );
-extern Aig_Obj_t *     Aig_ObjReal_rec( Aig_Obj_t * pObj );
-extern void            Aig_ObjPrintEqn( FILE * pFile, Aig_Obj_t * pObj, Vec_Vec_t * vLevels, int Level );
-extern void            Aig_ObjPrintVerilog( FILE * pFile, Aig_Obj_t * pObj, Vec_Vec_t * vLevels, int Level );
-extern void            Aig_ObjPrintVerbose( Aig_Obj_t * pObj, int fHaig );
-extern void            Aig_ManPrintVerbose( Aig_Man_t * p, int fHaig );
-extern void            Aig_ManDump( Aig_Man_t * p );
-extern void            Aig_ManDumpBlif( Aig_Man_t * p, char * pFileName );
-extern void            Aig_ManDumpVerilog( Aig_Man_t * p, char * pFileName );
-/*=== aigWin.c =========================================================*/
-extern void            Aig_ManFindCut( Aig_Obj_t * pRoot, Vec_Ptr_t * vFront, Vec_Ptr_t * vVisited, int nSizeLimit, int nFanoutLimit );
- 
-/*=== aigMem.c ===========================================================*/
-// fixed-size-block memory manager
-extern Aig_MmFixed_t * Aig_MmFixedStart( int nEntrySize, int nEntriesMax );
-extern void            Aig_MmFixedStop( Aig_MmFixed_t * p, int fVerbose );
-extern char *          Aig_MmFixedEntryFetch( Aig_MmFixed_t * p );
-extern void            Aig_MmFixedEntryRecycle( Aig_MmFixed_t * p, char * pEntry );
-extern void            Aig_MmFixedRestart( Aig_MmFixed_t * p );
-extern int             Aig_MmFixedReadMemUsage( Aig_MmFixed_t * p );
-extern int             Aig_MmFixedReadMaxEntriesUsed( Aig_MmFixed_t * p );
-// flexible-size-block memory manager
-extern Aig_MmFlex_t *  Aig_MmFlexStart();
-extern void            Aig_MmFlexStop( Aig_MmFlex_t * p, int fVerbose );
-extern char *          Aig_MmFlexEntryFetch( Aig_MmFlex_t * p, int nBytes );
-extern void            Aig_MmFlexRestart( Aig_MmFlex_t * p );
-extern int             Aig_MmFlexReadMemUsage( Aig_MmFlex_t * p );
-// hierarchical memory manager
-extern Aig_MmStep_t *  Aig_MmStepStart( int nSteps );
-extern void            Aig_MmStepStop( Aig_MmStep_t * p, int fVerbose );
-extern char *          Aig_MmStepEntryFetch( Aig_MmStep_t * p, int nBytes );
-extern void            Aig_MmStepEntryRecycle( Aig_MmStep_t * p, char * pEntry, int nBytes );
-extern int             Aig_MmStepReadMemUsage( Aig_MmStep_t * p );
-
-/*=== aigTime.c ===========================================================*/
-extern Aig_TMan_t *    Aig_TManStart( int nPis, int nPos );
-extern void            Aig_TManStop( Aig_TMan_t * p );
-extern void            Aig_TManCreateBox( Aig_TMan_t * p, int * pPis, int nPis, int * pPos, int nPos, float * pPiTimes, float * pPoTimes );
-extern void            Aig_TManSetPiDelay( Aig_TMan_t * p, int iPi, float Delay );
-extern void            Aig_TManSetPoDelay( Aig_TMan_t * p, int iPo, float Delay );
-extern void            Aig_TManSetPiArrival( Aig_TMan_t * p, int iPi, float Delay );
-extern void            Aig_TManSetPoRequired( Aig_TMan_t * p, int iPo, float Delay );
-extern void            Aig_TManIncrementTravId( Aig_TMan_t * p );
-extern float           Aig_TManGetPiArrival( Aig_TMan_t * p, int iPi );
-extern float           Aig_TManGetPoRequired( Aig_TMan_t * p, int iPo );
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/aig/aigCheck.c b/src/aig/aig/aigCheck.c
deleted file mode 100644
index 8c53e635..00000000
--- a/src/aig/aig/aigCheck.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/**CFile****************************************************************
- 
-  FileName    [aigCheck.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [AIG checking procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigCheck.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Checks the consistency of the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManCheck( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj, * pObj2;
-    int i;
-    // check primary inputs
-    Aig_ManForEachPi( p, pObj, i )
-    {
-        if ( Aig_ObjFanin0(pObj) || Aig_ObjFanin1(pObj) )
-        {
-            printf( "Aig_ManCheck: The PI node \"%p\" has fanins.\n", pObj );
-            return 0;
-        }
-    }
-    // check primary outputs
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        if ( !Aig_ObjFanin0(pObj) )
-        {
-            printf( "Aig_ManCheck: The PO node \"%p\" has NULL fanin.\n", pObj );
-            return 0;
-        }
-        if ( Aig_ObjFanin1(pObj) )
-        {
-            printf( "Aig_ManCheck: The PO node \"%p\" has second fanin.\n", pObj );
-            return 0;
-        }
-    }
-    // check internal nodes
-    Aig_ManForEachObj( p, pObj, i )
-    {
-        if ( !Aig_ObjIsNode(pObj) )
-            continue;
-        if ( !Aig_ObjFanin0(pObj) || !Aig_ObjFanin1(pObj) )
-        {
-            printf( "Aig_ManCheck: The AIG has internal node \"%p\" with a NULL fanin.\n", pObj );
-            return 0;
-        }
-        if ( Aig_ObjFanin0(pObj)->Id >= Aig_ObjFanin1(pObj)->Id )
-        {
-            printf( "Aig_ManCheck: The AIG has node \"%p\" with a wrong ordering of fanins.\n", pObj );
-            return 0;
-        }
-        pObj2 = Aig_TableLookup( p, pObj );
-        if ( pObj2 != pObj )
-        {
-            printf( "Aig_ManCheck: Node \"%p\" is not in the structural hashing table.\n", pObj );
-            return 0;
-        }
-    }
-    // count the total number of nodes
-    if ( Aig_ManObjNum(p) != 1 + Aig_ManPiNum(p) + Aig_ManPoNum(p) + 
-        Aig_ManBufNum(p) + Aig_ManAndNum(p) + Aig_ManExorNum(p) + Aig_ManLatchNum(p) )
-    {
-        printf( "Aig_ManCheck: The number of created nodes is wrong.\n" );
-        printf( "C1 = %d. Pi = %d. Po = %d. Buf = %d. And = %d. Xor = %d. Lat = %d. Total = %d.\n",
-            1, Aig_ManPiNum(p), Aig_ManPoNum(p), Aig_ManBufNum(p), Aig_ManAndNum(p), Aig_ManExorNum(p), Aig_ManLatchNum(p), 
-            1 + Aig_ManPiNum(p) + Aig_ManPoNum(p) + Aig_ManBufNum(p) + Aig_ManAndNum(p) + Aig_ManExorNum(p) + Aig_ManLatchNum(p) );
-        printf( "Created = %d. Deleted = %d. Existing = %d.\n",
-            p->nCreated, p->nDeleted, p->nCreated - p->nDeleted );
-        return 0;
-    }
-    // count the number of nodes in the table
-    if ( Aig_TableCountEntries(p) != Aig_ManAndNum(p) + Aig_ManExorNum(p) + Aig_ManLatchNum(p) )
-    {
-        printf( "Aig_ManCheck: The number of nodes in the structural hashing table is wrong.\n" );
-        printf( "Entries = %d. And = %d. Xor = %d. Lat = %d. Total = %d.\n", 
-            Aig_TableCountEntries(p), Aig_ManAndNum(p), Aig_ManExorNum(p), Aig_ManLatchNum(p),
-            Aig_ManAndNum(p) + Aig_ManExorNum(p) + Aig_ManLatchNum(p) );
-
-        return 0;
-    }
-//    if ( !Aig_ManIsAcyclic(p) )
-//        return 0;
-    return 1; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks if the markA is reset.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManCheckMarkA( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManForEachObj( p, pObj, i )
-        assert( pObj->fMarkA == 0 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks the consistency of phase assignment.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManCheckPhase( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManForEachObj( p, pObj, i )
-        if ( Aig_ObjIsPi(pObj) )
-            assert( (int)pObj->fPhase == 0 );
-        else
-            assert( (int)pObj->fPhase == (Aig_ObjPhaseReal(Aig_ObjChild0(pObj)) & Aig_ObjPhaseReal(Aig_ObjChild1(pObj))) );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigDfs.c b/src/aig/aig/aigDfs.c
deleted file mode 100644
index e9821bdc..00000000
--- a/src/aig/aig/aigDfs.c
+++ /dev/null
@@ -1,700 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigDfs.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [DFS traversal procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigDfs.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManDfs_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vNodes )
-{
-    if ( pObj == NULL )
-        return;
-    assert( !Aig_IsComplement(pObj) );
-    if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-        return;
-    assert( Aig_ObjIsNode(pObj) || Aig_ObjIsBuf(pObj) );
-    Aig_ManDfs_rec( p, Aig_ObjFanin0(pObj), vNodes );
-    Aig_ManDfs_rec( p, Aig_ObjFanin1(pObj), vNodes );
-    assert( !Aig_ObjIsTravIdCurrent(p, pObj) ); // loop detection
-    Aig_ObjSetTravIdCurrent(p, pObj);
-    Vec_PtrPush( vNodes, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManDfs( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManIncrementTravId( p );
-    // mark constant and PIs
-    Aig_ObjSetTravIdCurrent( p, Aig_ManConst1(p) );
-    Aig_ManForEachPi( p, pObj, i )
-        Aig_ObjSetTravIdCurrent( p, pObj );
-    // if there are latches, mark them
-    if ( Aig_ManLatchNum(p) > 0 )
-        Aig_ManForEachObj( p, pObj, i )
-            if ( Aig_ObjIsLatch(pObj) )
-                Aig_ObjSetTravIdCurrent( p, pObj );
-    // go through the nodes
-    vNodes = Vec_PtrAlloc( Aig_ManNodeNum(p) );
-    Aig_ManForEachObj( p, pObj, i )
-        if ( Aig_ObjIsNode(pObj) || Aig_ObjIsBuf(pObj) )
-            Aig_ManDfs_rec( p, pObj, vNodes );
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManDfsNodes( Aig_Man_t * p, Aig_Obj_t ** ppNodes, int nNodes )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj;
-    int i;
-    assert( Aig_ManLatchNum(p) == 0 );
-    Aig_ManIncrementTravId( p );
-    // mark constant and PIs
-    Aig_ObjSetTravIdCurrent( p, Aig_ManConst1(p) );
-    Aig_ManForEachPi( p, pObj, i )
-        Aig_ObjSetTravIdCurrent( p, pObj );
-    // go through the nodes
-    vNodes = Vec_PtrAlloc( Aig_ManNodeNum(p) );
-    for ( i = 0; i < nNodes; i++ )
-        Aig_ManDfs_rec( p, ppNodes[i], vNodes );
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManDfsChoices_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vNodes )
-{
-    if ( pObj == NULL )
-        return;
-    assert( !Aig_IsComplement(pObj) );
-    if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-        return;
-    assert( Aig_ObjIsNode(pObj) );
-    Aig_ManDfsChoices_rec( p, Aig_ObjFanin0(pObj), vNodes );
-    Aig_ManDfsChoices_rec( p, Aig_ObjFanin1(pObj), vNodes );
-    Aig_ManDfsChoices_rec( p, p->pEquivs[pObj->Id], vNodes );
-    assert( !Aig_ObjIsTravIdCurrent(p, pObj) ); // loop detection
-    Aig_ObjSetTravIdCurrent(p, pObj);
-    Vec_PtrPush( vNodes, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManDfsChoices( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj;
-    int i;
-    assert( p->pEquivs != NULL );
-    Aig_ManIncrementTravId( p );
-    // mark constant and PIs
-    Aig_ObjSetTravIdCurrent( p, Aig_ManConst1(p) );
-    Aig_ManForEachPi( p, pObj, i )
-        Aig_ObjSetTravIdCurrent( p, pObj );
-    // go through the nodes
-    vNodes = Vec_PtrAlloc( Aig_ManNodeNum(p) );
-    Aig_ManForEachPo( p, pObj, i )
-        Aig_ManDfsChoices_rec( p, Aig_ObjFanin0(pObj), vNodes );
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the reverse DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManDfsReverse_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vNodes )
-{
-    Aig_Obj_t * pFanout;
-    int iFanout, i;
-    assert( !Aig_IsComplement(pObj) );
-    if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-        return;
-    assert( Aig_ObjIsNode(pObj) || Aig_ObjIsBuf(pObj) );
-    Aig_ObjForEachFanout( p, pObj, pFanout, iFanout, i )
-        Aig_ManDfsReverse_rec( p, pFanout, vNodes );
-    assert( !Aig_ObjIsTravIdCurrent(p, pObj) ); // loop detection
-    Aig_ObjSetTravIdCurrent(p, pObj);
-    Vec_PtrPush( vNodes, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the reverse DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManDfsReverse( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManIncrementTravId( p );
-    // mark POs
-    Aig_ManForEachPo( p, pObj, i )
-        Aig_ObjSetTravIdCurrent( p, pObj );
-    // if there are latches, mark them
-    if ( Aig_ManLatchNum(p) > 0 )
-        Aig_ManForEachObj( p, pObj, i )
-            if ( Aig_ObjIsLatch(pObj) )
-                Aig_ObjSetTravIdCurrent( p, pObj );
-    // go through the nodes
-    vNodes = Vec_PtrAlloc( Aig_ManNodeNum(p) );
-    Aig_ManForEachObj( p, pObj, i )
-        if ( Aig_ObjIsNode(pObj) || Aig_ObjIsBuf(pObj) )
-            Aig_ManDfsReverse_rec( p, pObj, vNodes );
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the max number of levels in the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManLevelNum( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i, LevelsMax;
-    LevelsMax = 0;
-    Aig_ManForEachPo( p, pObj, i )
-        LevelsMax = AIG_MAX( LevelsMax, (int)Aig_ObjFanin0(pObj)->Level );
-    return LevelsMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the max number of levels in the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManCountLevels( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj;
-    int i, LevelsMax, Level0, Level1;
-    // initialize the levels
-    Aig_ManConst1(p)->iData = 0;
-    Aig_ManForEachPi( p, pObj, i )
-        pObj->iData = 0;
-    // compute levels in a DFS order
-    vNodes = Aig_ManDfs( p );
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-    {
-        Level0 = Aig_ObjFanin0(pObj)->iData;
-        Level1 = Aig_ObjFanin1(pObj)->iData;
-        pObj->iData = 1 + Aig_ObjIsExor(pObj) + AIG_MAX(Level0, Level1);
-    }
-    Vec_PtrFree( vNodes );
-    // get levels of the POs
-    LevelsMax = 0;
-    Aig_ManForEachPo( p, pObj, i )
-        LevelsMax = AIG_MAX( LevelsMax, Aig_ObjFanin0(pObj)->iData );
-    return LevelsMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ConeMark_rec( Aig_Obj_t * pObj )
-{
-    assert( !Aig_IsComplement(pObj) );
-    if ( !Aig_ObjIsNode(pObj) || Aig_ObjIsMarkA(pObj) )
-        return;
-    Aig_ConeMark_rec( Aig_ObjFanin0(pObj) );
-    Aig_ConeMark_rec( Aig_ObjFanin1(pObj) );
-    assert( !Aig_ObjIsMarkA(pObj) ); // loop detection
-    Aig_ObjSetMarkA( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ConeCleanAndMark_rec( Aig_Obj_t * pObj )
-{
-    assert( !Aig_IsComplement(pObj) );
-    if ( !Aig_ObjIsNode(pObj) || Aig_ObjIsMarkA(pObj) )
-        return;
-    Aig_ConeCleanAndMark_rec( Aig_ObjFanin0(pObj) );
-    Aig_ConeCleanAndMark_rec( Aig_ObjFanin1(pObj) );
-    assert( !Aig_ObjIsMarkA(pObj) ); // loop detection
-    Aig_ObjSetMarkA( pObj );
-    pObj->pData = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ConeCountAndMark_rec( Aig_Obj_t * pObj )
-{
-    int Counter;
-    assert( !Aig_IsComplement(pObj) );
-    if ( !Aig_ObjIsNode(pObj) || Aig_ObjIsMarkA(pObj) )
-        return 0;
-    Counter = 1 + Aig_ConeCountAndMark_rec( Aig_ObjFanin0(pObj) ) + 
-        Aig_ConeCountAndMark_rec( Aig_ObjFanin1(pObj) );
-    assert( !Aig_ObjIsMarkA(pObj) ); // loop detection
-    Aig_ObjSetMarkA( pObj );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ConeUnmark_rec( Aig_Obj_t * pObj )
-{
-    assert( !Aig_IsComplement(pObj) );
-    if ( !Aig_ObjIsNode(pObj) || !Aig_ObjIsMarkA(pObj) )
-        return;
-    Aig_ConeUnmark_rec( Aig_ObjFanin0(pObj) ); 
-    Aig_ConeUnmark_rec( Aig_ObjFanin1(pObj) );
-    assert( Aig_ObjIsMarkA(pObj) ); // loop detection
-    Aig_ObjClearMarkA( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_DagSize( Aig_Obj_t * pObj )
-{
-    int Counter;
-    Counter = Aig_ConeCountAndMark_rec( Aig_Regular(pObj) );
-    Aig_ConeUnmark_rec( Aig_Regular(pObj) );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the support size of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_SupportSize_rec( Aig_Man_t * p, Aig_Obj_t * pObj, int * pCounter )
-{
-    if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-        return;
-    Aig_ObjSetTravIdCurrent(p, pObj);
-    if ( Aig_ObjIsPi(pObj) )
-    {
-        (*pCounter)++;
-        return;
-    }
-    assert( Aig_ObjIsNode(pObj) || Aig_ObjIsBuf(pObj) );
-    Aig_SupportSize_rec( p, Aig_ObjFanin0(pObj), pCounter );
-    if ( Aig_ObjFanin1(pObj) )
-        Aig_SupportSize_rec( p, Aig_ObjFanin1(pObj), pCounter );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the support size of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_SupportSize( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    int Counter = 0;
-    assert( !Aig_IsComplement(pObj) );
-    assert( !Aig_ObjIsPo(pObj) );
-    Aig_ManIncrementTravId( p );
-    Aig_SupportSize_rec( p, pObj, &Counter );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers the AIG from one manager into another.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_Transfer_rec( Aig_Man_t * pDest, Aig_Obj_t * pObj )
-{
-    assert( !Aig_IsComplement(pObj) );
-    if ( !Aig_ObjIsNode(pObj) || Aig_ObjIsMarkA(pObj) )
-        return;
-    Aig_Transfer_rec( pDest, Aig_ObjFanin0(pObj) ); 
-    Aig_Transfer_rec( pDest, Aig_ObjFanin1(pObj) );
-    pObj->pData = Aig_And( pDest, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
-    assert( !Aig_ObjIsMarkA(pObj) ); // loop detection
-    Aig_ObjSetMarkA( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers the AIG from one manager into another.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Transfer( Aig_Man_t * pSour, Aig_Man_t * pDest, Aig_Obj_t * pRoot, int nVars )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    // solve simple cases
-    if ( pSour == pDest )
-        return pRoot;
-    if ( Aig_ObjIsConst1( Aig_Regular(pRoot) ) )
-        return Aig_NotCond( Aig_ManConst1(pDest), Aig_IsComplement(pRoot) );
-    // set the PI mapping
-    Aig_ManForEachPi( pSour, pObj, i )
-    {
-        if ( i == nVars )
-           break;
-        pObj->pData = Aig_IthVar(pDest, i);
-    }
-    // transfer and set markings
-    Aig_Transfer_rec( pDest, Aig_Regular(pRoot) );
-    // clear the markings
-    Aig_ConeUnmark_rec( Aig_Regular(pRoot) );
-    return Aig_NotCond( Aig_Regular(pRoot)->pData, Aig_IsComplement(pRoot) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Composes the AIG (pRoot) with the function (pFunc) using PI var (iVar).]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_Compose_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFunc, Aig_Obj_t * pVar )
-{
-    assert( !Aig_IsComplement(pObj) );
-    if ( Aig_ObjIsMarkA(pObj) )
-        return;
-    if ( Aig_ObjIsConst1(pObj) || Aig_ObjIsPi(pObj) )
-    {
-        pObj->pData = pObj == pVar ? pFunc : pObj;
-        return;
-    }
-    Aig_Compose_rec( p, Aig_ObjFanin0(pObj), pFunc, pVar ); 
-    Aig_Compose_rec( p, Aig_ObjFanin1(pObj), pFunc, pVar );
-    pObj->pData = Aig_And( p, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
-    assert( !Aig_ObjIsMarkA(pObj) ); // loop detection
-    Aig_ObjSetMarkA( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Composes the AIG (pRoot) with the function (pFunc) using PI var (iVar).]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Compose( Aig_Man_t * p, Aig_Obj_t * pRoot, Aig_Obj_t * pFunc, int iVar )
-{
-    // quit if the PI variable is not defined
-    if ( iVar >= Aig_ManPiNum(p) )
-    {
-        printf( "Aig_Compose(): The PI variable %d is not defined.\n", iVar );
-        return NULL;
-    }
-    // recursively perform composition
-    Aig_Compose_rec( p, Aig_Regular(pRoot), pFunc, Aig_ManPi(p, iVar) );
-    // clear the markings
-    Aig_ConeUnmark_rec( Aig_Regular(pRoot) );
-    return Aig_NotCond( Aig_Regular(pRoot)->pData, Aig_IsComplement(pRoot) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the internal nodes of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjCollectCut_rec( Aig_Obj_t * pNode, Vec_Ptr_t * vNodes )
-{
-//    Aig_Obj_t * pFan0 = Aig_ObjFanin0(pNode);
-//    Aig_Obj_t * pFan1 = Aig_ObjFanin1(pNode);
-    if ( pNode->fMarkA )
-        return;
-    pNode->fMarkA = 1;
-    assert( Aig_ObjIsNode(pNode) );
-    Aig_ObjCollectCut_rec( Aig_ObjFanin0(pNode), vNodes );
-    Aig_ObjCollectCut_rec( Aig_ObjFanin1(pNode), vNodes );
-    Vec_PtrPush( vNodes, pNode );
-//printf( "added %d  ", pNode->Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the internal nodes of the cut.]
-
-  Description [Does not include the leaves of the cut.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjCollectCut( Aig_Obj_t * pRoot, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vNodes )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    // collect and mark the leaves
-    Vec_PtrClear( vNodes );
-    Vec_PtrForEachEntry( vLeaves, pObj, i )
-    {
-        assert( pObj->fMarkA == 0 );
-        pObj->fMarkA = 1;
-//        printf( "%d " , pObj->Id );
-    }
-//printf( "\n" );
-    // collect and mark the nodes
-    Aig_ObjCollectCut_rec( pRoot, vNodes );
-    // clean the nodes
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        pObj->fMarkA = 0;
-    Vec_PtrForEachEntry( vLeaves, pObj, i )
-        pObj->fMarkA = 0;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the nodes of the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ObjCollectSuper_rec( Aig_Obj_t * pRoot, Aig_Obj_t * pObj, Vec_Ptr_t * vSuper )
-{
-    int RetValue1, RetValue2, i;
-    // check if the node is visited
-    if ( Aig_Regular(pObj)->fMarkA )
-    {
-        // check if the node occurs in the same polarity
-        for ( i = 0; i < vSuper->nSize; i++ )
-            if ( vSuper->pArray[i] == pObj )
-                return 1;
-        // check if the node is present in the opposite polarity
-        for ( i = 0; i < vSuper->nSize; i++ )
-            if ( vSuper->pArray[i] == Aig_Not(pObj) )
-                return -1;
-        assert( 0 );
-        return 0;
-    }
-    // if the new node is complemented or a PI, another gate begins
-    if ( pObj != pRoot && (Aig_IsComplement(pObj) || Aig_ObjType(pObj) != Aig_ObjType(pRoot) || Aig_ObjRefs(pObj) > 1) )
-    {
-        Vec_PtrPush( vSuper, pObj );
-        Aig_Regular(pObj)->fMarkA = 1;
-        return 0;
-    }
-    assert( !Aig_IsComplement(pObj) );
-    assert( Aig_ObjIsNode(pObj) );
-    // go through the branches
-    RetValue1 = Aig_ObjCollectSuper_rec( pRoot, Aig_ObjReal_rec( Aig_ObjChild0(pObj) ), vSuper );
-    RetValue2 = Aig_ObjCollectSuper_rec( pRoot, Aig_ObjReal_rec( Aig_ObjChild1(pObj) ), vSuper );
-    if ( RetValue1 == -1 || RetValue2 == -1 )
-        return -1;
-    // return 1 if at least one branch has a duplicate
-    return RetValue1 || RetValue2;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the nodes of the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ObjCollectSuper( Aig_Obj_t * pObj, Vec_Ptr_t * vSuper )
-{
-    int RetValue, i;
-    assert( !Aig_IsComplement(pObj) );
-    assert( Aig_ObjIsNode(pObj) );
-    // collect the nodes in the implication supergate
-    Vec_PtrClear( vSuper );
-    RetValue = Aig_ObjCollectSuper_rec( pObj, pObj, vSuper );
-    assert( Vec_PtrSize(vSuper) > 1 );
-    // unmark the visited nodes
-    Vec_PtrForEachEntry( vSuper, pObj, i )
-        Aig_Regular(pObj)->fMarkA = 0;
-    // if we found the node and its complement in the same implication supergate, 
-    // return empty set of nodes (meaning that we should use constant-0 node)
-    if ( RetValue == -1 )
-        vSuper->nSize = 0;
-    return RetValue;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigFanout.c b/src/aig/aig/aigFanout.c
deleted file mode 100644
index d0beb128..00000000
--- a/src/aig/aig/aigFanout.c
+++ /dev/null
@@ -1,189 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigFanout.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Fanout manipulation.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigFanout.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-// 0: first iFan
-// 1: prev iFan0
-// 2: prev iFan1
-// 3: next iFan0
-// 4: next iFan1
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static inline int   Aig_FanoutCreate( int FanId, int Num )    { assert( Num < 2 ); return (FanId << 1) | Num;   } 
-static inline int * Aig_FanoutObj( int * pData, int ObjId )   { return pData + 5*ObjId;                         }
-static inline int * Aig_FanoutPrev( int * pData, int iFan )   { return pData + 5*(iFan >> 1) + 1 + (iFan & 1);  }
-static inline int * Aig_FanoutNext( int * pData, int iFan )   { return pData + 5*(iFan >> 1) + 3 + (iFan & 1);  }
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Create fanout for all objects in the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManFanoutStart( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    assert( Aig_ManBufNum(p) == 0 );
-    // allocate fanout datastructure
-    assert( p->pFanData == NULL );
-    p->nFansAlloc = 2 * Aig_ManObjNumMax(p);
-    if ( p->nFansAlloc < (1<<12) )
-        p->nFansAlloc = (1<<12);
-    p->pFanData = ALLOC( int, 5 * p->nFansAlloc );
-    memset( p->pFanData, 0, sizeof(int) * 5 * p->nFansAlloc );
-    // add fanouts for all objects
-    Aig_ManForEachObj( p, pObj, i )
-    {
-        if ( Aig_ObjChild0(pObj) )
-            Aig_ObjAddFanout( p, Aig_ObjFanin0(pObj), pObj );
-        if ( Aig_ObjChild1(pObj) )
-            Aig_ObjAddFanout( p, Aig_ObjFanin1(pObj), pObj );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes fanout for all objects in the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManFanoutStop( Aig_Man_t * p )
-{
-    assert( p->pFanData != NULL );
-    FREE( p->pFanData );
-    p->nFansAlloc = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds fanout (pFanout) of node (pObj).]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjAddFanout( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFanout )
-{
-    int iFan, * pFirst, * pPrevC, * pNextC, * pPrev, * pNext;
-    assert( p->pFanData );
-    assert( !Aig_IsComplement(pObj) && !Aig_IsComplement(pFanout) );
-    assert( pFanout->Id > 0 );
-    if ( pObj->Id >= p->nFansAlloc || pFanout->Id >= p->nFansAlloc )
-    {
-        int nFansAlloc = 2 * AIG_MAX( pObj->Id, pFanout->Id ); 
-        p->pFanData = REALLOC( int, p->pFanData, 5 * nFansAlloc );
-        memset( p->pFanData + 5 * p->nFansAlloc, 0, sizeof(int) * 5 * (nFansAlloc - p->nFansAlloc) );
-        p->nFansAlloc = nFansAlloc;
-    }
-    assert( pObj->Id < p->nFansAlloc && pFanout->Id < p->nFansAlloc );
-    iFan   = Aig_FanoutCreate( pFanout->Id, Aig_ObjWhatFanin(pFanout, pObj) );
-    pPrevC = Aig_FanoutPrev( p->pFanData, iFan );
-    pNextC = Aig_FanoutNext( p->pFanData, iFan );
-    pFirst = Aig_FanoutObj( p->pFanData, pObj->Id );
-    if ( *pFirst == 0 )
-    {
-        *pFirst = iFan;
-        *pPrevC = iFan;
-        *pNextC = iFan;
-    }
-    else
-    {
-        pPrev = Aig_FanoutPrev( p->pFanData, *pFirst );
-        pNext = Aig_FanoutNext( p->pFanData, *pPrev );
-        assert( *pNext == *pFirst );
-        *pPrevC = *pPrev;
-        *pNextC = *pFirst;
-        *pPrev  = iFan;
-        *pNext  = iFan;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes fanout (pFanout) of node (pObj).]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjRemoveFanout( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFanout )
-{
-    int iFan, * pFirst, * pPrevC, * pNextC, * pPrev, * pNext;
-    assert( p->pFanData && pObj->Id < p->nFansAlloc && pFanout->Id < p->nFansAlloc );
-    assert( !Aig_IsComplement(pObj) && !Aig_IsComplement(pFanout) );
-    assert( pFanout->Id > 0 );
-    iFan   = Aig_FanoutCreate( pFanout->Id, Aig_ObjWhatFanin(pFanout, pObj) );
-    pPrevC = Aig_FanoutPrev( p->pFanData, iFan );
-    pNextC = Aig_FanoutNext( p->pFanData, iFan );
-    pPrev  = Aig_FanoutPrev( p->pFanData, *pNextC );
-    pNext  = Aig_FanoutNext( p->pFanData, *pPrevC );
-    assert( *pPrev == iFan );
-    assert( *pNext == iFan );
-    pFirst = Aig_FanoutObj( p->pFanData, pObj->Id );
-    assert( *pFirst > 0 );
-    if ( *pFirst == iFan )
-    {
-        if ( *pNextC == iFan )
-        {
-            *pFirst = 0;
-            *pPrev  = 0;
-            *pNext  = 0;
-            *pPrevC = 0;
-            *pNextC = 0;
-            return;
-        }
-        *pFirst = *pNextC;
-    }
-    *pPrev  = *pPrevC;
-    *pNext  = *pNextC;
-    *pPrevC = 0;
-    *pNextC = 0;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigMan.c b/src/aig/aig/aigMan.c
deleted file mode 100644
index d2714380..00000000
--- a/src/aig/aig/aigMan.c
+++ /dev/null
@@ -1,324 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigMan.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [AIG manager.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigMan.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the AIG manager.]
-
-  Description [The argument of this procedure is a soft limit on the
-  the number of nodes, or 0 if the limit is unknown.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManStart( int nNodesMax )
-{
-    Aig_Man_t * p;
-    if ( nNodesMax <= 0 )
-        nNodesMax = 10007;
-    // start the manager
-    p = ALLOC( Aig_Man_t, 1 );
-    memset( p, 0, sizeof(Aig_Man_t) );
-    // perform initializations
-    p->nTravIds = 1;
-    p->fCatchExor = 0;
-    // allocate arrays for nodes
-    p->vPis  = Vec_PtrAlloc( 100 );
-    p->vPos  = Vec_PtrAlloc( 100 );
-    p->vObjs = Vec_PtrAlloc( 1000 );
-    p->vBufs = Vec_PtrAlloc( 100 );
-    // prepare the internal memory manager
-    p->pMemObjs = Aig_MmFixedStart( sizeof(Aig_Obj_t), nNodesMax );
-    // create the constant node
-    p->pConst1 = Aig_ManFetchMemory( p );
-    p->pConst1->Type = AIG_OBJ_CONST1;
-    p->pConst1->fPhase = 1;
-    p->nObjs[AIG_OBJ_CONST1]++;
-    // start the table
-    p->nTableSize = Aig_PrimeCudd( nNodesMax );
-    p->pTable = ALLOC( Aig_Obj_t *, p->nTableSize );
-    memset( p->pTable, 0, sizeof(Aig_Obj_t *) * p->nTableSize );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Duplicates the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManStartFrom( Aig_Man_t * p )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pObj;
-    int i;
-    // create the new manager
-    pNew = Aig_ManStart( Aig_ManObjNumMax(p) );
-    pNew->pName = Aig_UtilStrsav( p->pName );
-    // create the PIs
-    Aig_ManConst1(p)->pData = Aig_ManConst1(pNew);
-    Aig_ManForEachPi( p, pObj, i )
-        pObj->pData = Aig_ObjCreatePi(pNew);
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Duplicates the AIG manager recursively.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_ManDup_rec( Aig_Man_t * pNew, Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    if ( pObj->pData )
-        return pObj->pData;
-    Aig_ManDup_rec( pNew, p, Aig_ObjFanin0(pObj) );
-    if ( Aig_ObjIsBuf(pObj) )
-        return pObj->pData = Aig_ObjChild0Copy(pObj);
-    Aig_ManDup_rec( pNew, p, Aig_ObjFanin1(pObj) );
-    return pObj->pData = Aig_And( pNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Duplicates the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManDup( Aig_Man_t * p, int fOrdered )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pObj;
-    int i;
-    // create the new manager
-    pNew = Aig_ManStart( Aig_ManObjNumMax(p) );
-    pNew->pName = Aig_UtilStrsav( p->pName );
-    pNew->nRegs = p->nRegs;
-    pNew->nAsserts = p->nAsserts;
-    if ( p->vFlopNums )
-        pNew->vFlopNums = Vec_IntDup( p->vFlopNums );
-    // create the PIs
-    Aig_ManCleanData( p );
-    Aig_ManConst1(p)->pData = Aig_ManConst1(pNew);
-    Aig_ManForEachPi( p, pObj, i )
-        pObj->pData = Aig_ObjCreatePi(pNew);
-    // duplicate internal nodes
-    if ( fOrdered )
-    {
-        Aig_ManForEachObj( p, pObj, i )
-            if ( Aig_ObjIsBuf(pObj) )
-                pObj->pData = Aig_ObjChild0Copy(pObj);
-            else if ( Aig_ObjIsNode(pObj) )
-                pObj->pData = Aig_And( pNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
-    }
-    else
-    {
-        Aig_ManForEachObj( p, pObj, i )
-            if ( !Aig_ObjIsPo(pObj) )
-            {
-                Aig_ManDup_rec( pNew, p, pObj );        
-                assert( pObj->Level == ((Aig_Obj_t*)pObj->pData)->Level );
-            }
-    }
-    // add the POs
-    Aig_ManForEachPo( p, pObj, i )
-        Aig_ObjCreatePo( pNew, Aig_ObjChild0Copy(pObj) );
-    assert( Aig_ManBufNum(p) != 0 || Aig_ManNodeNum(p) == Aig_ManNodeNum(pNew) );
-    // check the resulting network
-    if ( !Aig_ManCheck(pNew) )
-        printf( "Aig_ManDup(): The check has failed.\n" );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Extracts the miter composed of XOR of the two nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManExtractMiter( Aig_Man_t * p, Aig_Obj_t * pNode1, Aig_Obj_t * pNode2 )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pObj;
-    int i;
-    // create the new manager
-    pNew = Aig_ManStart( Aig_ManObjNumMax(p) );
-    pNew->pName = Aig_UtilStrsav( p->pName );
-    // create the PIs
-    Aig_ManCleanData( p );
-    Aig_ManConst1(p)->pData = Aig_ManConst1(pNew);
-    Aig_ManForEachPi( p, pObj, i )
-        pObj->pData = Aig_ObjCreatePi(pNew);
-    // dump the nodes
-    Aig_ManDup_rec( pNew, p, pNode1 );   
-    Aig_ManDup_rec( pNew, p, pNode2 );   
-    // construct the EXOR
-    pObj = Aig_Exor( pNew, pNode1->pData, pNode2->pData ); 
-    pObj = Aig_NotCond( pObj, Aig_Regular(pObj)->fPhase ^ Aig_IsComplement(pObj) );
-    // add the PO
-    Aig_ObjCreatePo( pNew, pObj );
-    // check the resulting network
-    if ( !Aig_ManCheck(pNew) )
-        printf( "Aig_ManDup(): The check has failed.\n" );
-    return pNew;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManStop( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    if ( p->vMapped )
-        Vec_PtrFree( p->vMapped );
-    // print time
-    if ( p->time1 ) { PRT( "time1", p->time1 ); }
-    if ( p->time2 ) { PRT( "time2", p->time2 ); }
-    // delete timing
-    if ( p->pManTime )
-        Aig_TManStop( p->pManTime );
-    // delete fanout
-    if ( p->pFanData ) 
-        Aig_ManFanoutStop( p );
-    // make sure the nodes have clean marks
-    Aig_ManForEachObj( p, pObj, i )
-        assert( !pObj->fMarkA && !pObj->fMarkB );
-//    Aig_TableProfile( p );
-    Aig_MmFixedStop( p->pMemObjs, 0 );
-    if ( p->vPis )     Vec_PtrFree( p->vPis );
-    if ( p->vPos )     Vec_PtrFree( p->vPos );
-    if ( p->vObjs )    Vec_PtrFree( p->vObjs );
-    if ( p->vBufs )    Vec_PtrFree( p->vBufs );
-    if ( p->vLevelR )  Vec_IntFree( p->vLevelR );
-    if ( p->vLevels )  Vec_VecFree( p->vLevels );
-    if ( p->vFlopNums) Vec_IntFree( p->vFlopNums );
-    FREE( p->pName );
-    FREE( p->pObjCopies );
-    FREE( p->pReprs );
-    FREE( p->pEquivs );
-    free( p->pTable );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of dangling nodes removed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManCleanup( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vObjs;
-    Aig_Obj_t * pNode;
-    int i, nNodesOld;
-    nNodesOld = Aig_ManNodeNum(p);
-    // collect roots of dangling nodes
-    vObjs = Vec_PtrAlloc( 100 );
-    Aig_ManForEachObj( p, pNode, i )
-        if ( Aig_ObjIsNode(pNode) && Aig_ObjRefs(pNode) == 0 )
-            Vec_PtrPush( vObjs, pNode );
-    // recursively remove dangling nodes
-    Vec_PtrForEachEntry( vObjs, pNode, i )
-        Aig_ObjDelete_rec( p, pNode, 1 );
-    Vec_PtrFree( vObjs );
-    return nNodesOld - Aig_ManNodeNum(p);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManPrintStats( Aig_Man_t * p )
-{
-    printf( "PI/PO/Lat = %5d/%5d/%5d   ", Aig_ManPiNum(p), Aig_ManPoNum(p), Aig_ManLatchNum(p) );
-    printf( "A = %7d. ",    Aig_ManAndNum(p) );
-    if ( Aig_ManExorNum(p) )
-        printf( "X = %5d. ",    Aig_ManExorNum(p) );
-//    if ( Aig_ManBufNum(p) )
-        printf( "B = %5d. ",    Aig_ManBufNum(p) );
-//    printf( "Cre = %6d. ",  p->nCreated );
-//    printf( "Del = %6d. ",  p->nDeleted );
-//    printf( "Lev = %3d. ",  Aig_ManCountLevels(p) );
-    printf( "Max = %7d. ",  Aig_ManObjNumMax(p) );
-    printf( "Lev = %3d. ",  Aig_ManLevels(p) );
-    if ( Aig_ManRegNum(p) )
-        printf( "Lat = %5d. ", Aig_ManRegNum(p) );
-    printf( "\n" );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigMem.c b/src/aig/aig/aigMem.c
deleted file mode 100644
index dab90777..00000000
--- a/src/aig/aig/aigMem.c
+++ /dev/null
@@ -1,598 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigMem.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Memory managers.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigMem.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-struct Aig_MmFixed_t_
-{
-    // information about individual entries
-    int           nEntrySize;    // the size of one entry
-    int           nEntriesAlloc; // the total number of entries allocated
-    int           nEntriesUsed;  // the number of entries in use
-    int           nEntriesMax;   // the max number of entries in use
-    char *        pEntriesFree;  // the linked list of free entries
-
-    // this is where the memory is stored
-    int           nChunkSize;    // the size of one chunk
-    int           nChunksAlloc;  // the maximum number of memory chunks 
-    int           nChunks;       // the current number of memory chunks 
-    char **       pChunks;       // the allocated memory
-
-    // statistics
-    int           nMemoryUsed;   // memory used in the allocated entries
-    int           nMemoryAlloc;  // memory allocated
-};
-
-struct Aig_MmFlex_t_
-{
-    // information about individual entries
-    int           nEntriesUsed;  // the number of entries allocated
-    char *        pCurrent;      // the current pointer to free memory
-    char *        pEnd;          // the first entry outside the free memory
-
-    // this is where the memory is stored
-    int           nChunkSize;    // the size of one chunk
-    int           nChunksAlloc;  // the maximum number of memory chunks 
-    int           nChunks;       // the current number of memory chunks 
-    char **       pChunks;       // the allocated memory
-
-    // statistics
-    int           nMemoryUsed;   // memory used in the allocated entries
-    int           nMemoryAlloc;  // memory allocated
-};
-
-struct Aig_MmStep_t_
-{
-    int             nMems;    // the number of fixed memory managers employed
-    Aig_MmFixed_t **  pMems;    // memory managers: 2^1 words, 2^2 words, etc
-    int             nMapSize; // the size of the memory array
-    Aig_MmFixed_t **  pMap;     // maps the number of bytes into its memory manager
-};
-
-#define ALLOC(type, num)     ((type *) malloc(sizeof(type) * (num)))
-#define FREE(obj)             ((obj) ? (free((char *) (obj)), (obj) = 0) : 0)
-#define REALLOC(type, obj, num)    \
-        ((obj) ? ((type *) realloc((char *)(obj), sizeof(type) * (num))) : \
-         ((type *) malloc(sizeof(type) * (num))))
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates memory pieces of fixed size.]
-
-  Description [The size of the chunk is computed as the minimum of
-  1024 entries and 64K. Can only work with entry size at least 4 byte long.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_MmFixed_t * Aig_MmFixedStart( int nEntrySize, int nEntriesMax )
-{
-    Aig_MmFixed_t * p;
-
-    p = ALLOC( Aig_MmFixed_t, 1 );
-    memset( p, 0, sizeof(Aig_MmFixed_t) );
-
-    p->nEntrySize    = nEntrySize;
-    p->nEntriesAlloc = 0;
-    p->nEntriesUsed  = 0;
-    p->pEntriesFree  = NULL;
-
-    p->nChunkSize = nEntriesMax / 8;
-    if ( p->nChunkSize < 8 )
-        p->nChunkSize = 8;
-
-    p->nChunksAlloc  = 64;
-    p->nChunks       = 0;
-    p->pChunks       = ALLOC( char *, p->nChunksAlloc );
-
-    p->nMemoryUsed   = 0;
-    p->nMemoryAlloc  = 0;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_MmFixedStop( Aig_MmFixed_t * p, int fVerbose )
-{
-    int i;
-    if ( p == NULL )
-        return;
-    if ( fVerbose )
-    {
-        printf( "Fixed memory manager: Entry = %5d. Chunk = %5d. Chunks used = %5d.\n",
-            p->nEntrySize, p->nChunkSize, p->nChunks );
-        printf( "   Entries used = %8d. Entries peak = %8d. Memory used = %8d. Memory alloc = %8d.\n",
-            p->nEntriesUsed, p->nEntriesMax, p->nEntrySize * p->nEntriesUsed, p->nMemoryAlloc );
-    }
-    for ( i = 0; i < p->nChunks; i++ )
-        free( p->pChunks[i] );
-    free( p->pChunks );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Aig_MmFixedEntryFetch( Aig_MmFixed_t * p )
-{
-    char * pTemp;
-    int i;
-
-    // check if there are still free entries
-    if ( p->nEntriesUsed == p->nEntriesAlloc )
-    { // need to allocate more entries
-        assert( p->pEntriesFree == NULL );
-        if ( p->nChunks == p->nChunksAlloc )
-        {
-            p->nChunksAlloc *= 2;
-            p->pChunks = REALLOC( char *, p->pChunks, p->nChunksAlloc ); 
-        }
-        p->pEntriesFree = ALLOC( char, p->nEntrySize * p->nChunkSize );
-        p->nMemoryAlloc += p->nEntrySize * p->nChunkSize;
-        // transform these entries into a linked list
-        pTemp = p->pEntriesFree;
-        for ( i = 1; i < p->nChunkSize; i++ )
-        {
-            *((char **)pTemp) = pTemp + p->nEntrySize;
-            pTemp += p->nEntrySize;
-        }
-        // set the last link
-        *((char **)pTemp) = NULL;
-        // add the chunk to the chunk storage
-        p->pChunks[ p->nChunks++ ] = p->pEntriesFree;
-        // add to the number of entries allocated
-        p->nEntriesAlloc += p->nChunkSize;
-    }
-    // incrememt the counter of used entries
-    p->nEntriesUsed++;
-    if ( p->nEntriesMax < p->nEntriesUsed )
-        p->nEntriesMax = p->nEntriesUsed;
-    // return the first entry in the free entry list
-    pTemp = p->pEntriesFree;
-    p->pEntriesFree = *((char **)pTemp);
-    return pTemp;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_MmFixedEntryRecycle( Aig_MmFixed_t * p, char * pEntry )
-{
-    // decrement the counter of used entries
-    p->nEntriesUsed--;
-    // add the entry to the linked list of free entries
-    *((char **)pEntry) = p->pEntriesFree;
-    p->pEntriesFree = pEntry;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description [Relocates all the memory except the first chunk.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_MmFixedRestart( Aig_MmFixed_t * p )
-{
-    int i;
-    char * pTemp;
-    if ( p->nChunks == 0 )
-        return;
-    // deallocate all chunks except the first one
-    for ( i = 1; i < p->nChunks; i++ )
-        free( p->pChunks[i] );
-    p->nChunks = 1;
-    // transform these entries into a linked list
-    pTemp = p->pChunks[0];
-    for ( i = 1; i < p->nChunkSize; i++ )
-    {
-        *((char **)pTemp) = pTemp + p->nEntrySize;
-        pTemp += p->nEntrySize;
-    }
-    // set the last link
-    *((char **)pTemp) = NULL;
-    // set the free entry list
-    p->pEntriesFree  = p->pChunks[0];
-    // set the correct statistics
-    p->nMemoryAlloc  = p->nEntrySize * p->nChunkSize;
-    p->nMemoryUsed   = 0;
-    p->nEntriesAlloc = p->nChunkSize;
-    p->nEntriesUsed  = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_MmFixedReadMemUsage( Aig_MmFixed_t * p )
-{
-    return p->nMemoryAlloc;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_MmFixedReadMaxEntriesUsed( Aig_MmFixed_t * p )
-{
-    return p->nEntriesMax;
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates entries of flexible size.]
-
-  Description [Can only work with entry size at least 4 byte long.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_MmFlex_t * Aig_MmFlexStart()
-{
-    Aig_MmFlex_t * p;
-
-    p = ALLOC( Aig_MmFlex_t, 1 );
-    memset( p, 0, sizeof(Aig_MmFlex_t) );
-
-    p->nEntriesUsed  = 0;
-    p->pCurrent      = NULL;
-    p->pEnd          = NULL;
-
-    p->nChunkSize    = (1 << 18);
-    p->nChunksAlloc  = 64;
-    p->nChunks       = 0;
-    p->pChunks       = ALLOC( char *, p->nChunksAlloc );
-
-    p->nMemoryUsed   = 0;
-    p->nMemoryAlloc  = 0;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_MmFlexStop( Aig_MmFlex_t * p, int fVerbose )
-{
-    int i;
-    if ( p == NULL )
-        return;
-    if ( fVerbose )
-    {
-        printf( "Flexible memory manager: Chunk size = %d. Chunks used = %d.\n",
-            p->nChunkSize, p->nChunks );
-        printf( "   Entries used = %d. Memory used = %d. Memory alloc = %d.\n",
-            p->nEntriesUsed, p->nMemoryUsed, p->nMemoryAlloc );
-    }
-    for ( i = 0; i < p->nChunks; i++ )
-        free( p->pChunks[i] );
-    free( p->pChunks );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Aig_MmFlexEntryFetch( Aig_MmFlex_t * p, int nBytes )
-{
-    char * pTemp;
-    // check if there are still free entries
-    if ( p->pCurrent == NULL || p->pCurrent + nBytes > p->pEnd )
-    { // need to allocate more entries
-        if ( p->nChunks == p->nChunksAlloc )
-        {
-            p->nChunksAlloc *= 2;
-            p->pChunks = REALLOC( char *, p->pChunks, p->nChunksAlloc ); 
-        }
-        if ( nBytes > p->nChunkSize )
-        {
-            // resize the chunk size if more memory is requested than it can give
-            // (ideally, this should never happen)
-            p->nChunkSize = 2 * nBytes;
-        }
-        p->pCurrent = ALLOC( char, p->nChunkSize );
-        p->pEnd     = p->pCurrent + p->nChunkSize;
-        p->nMemoryAlloc += p->nChunkSize;
-        // add the chunk to the chunk storage
-        p->pChunks[ p->nChunks++ ] = p->pCurrent;
-    }
-    assert( p->pCurrent + nBytes <= p->pEnd );
-    // increment the counter of used entries
-    p->nEntriesUsed++;
-    // keep track of the memory used
-    p->nMemoryUsed += nBytes;
-    // return the next entry
-    pTemp = p->pCurrent;
-    p->pCurrent += nBytes;
-    return pTemp;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description [Relocates all the memory except the first chunk.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_MmFlexRestart( Aig_MmFlex_t * p )
-{
-    int i;
-    if ( p->nChunks == 0 )
-        return;
-    // deallocate all chunks except the first one
-    for ( i = 1; i < p->nChunks; i++ )
-        free( p->pChunks[i] );
-    p->nChunks  = 1;
-    p->nMemoryAlloc = p->nChunkSize;
-    // transform these entries into a linked list
-    p->pCurrent = p->pChunks[0];
-    p->pEnd     = p->pCurrent + p->nChunkSize;
-    p->nEntriesUsed = 0;
-    p->nMemoryUsed = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_MmFlexReadMemUsage( Aig_MmFlex_t * p )
-{
-    return p->nMemoryUsed;
-}
-
-
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the hierarchical memory manager.]
-
-  Description [This manager can allocate entries of any size.
-  Iternally they are mapped into the entries with the number of bytes
-  equal to the power of 2. The smallest entry size is 8 bytes. The
-  next one is 16 bytes etc. So, if the user requests 6 bytes, he gets 
-  8 byte entry. If we asks for 25 bytes, he gets 32 byte entry etc.
-  The input parameters "nSteps" says how many fixed memory managers
-  are employed internally. Calling this procedure with nSteps equal
-  to 10 results in 10 hierarchically arranged internal memory managers, 
-  which can allocate up to 4096 (1Kb) entries. Requests for larger 
-  entries are handed over to malloc() and then free()ed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_MmStep_t * Aig_MmStepStart( int nSteps )
-{
-    Aig_MmStep_t * p;
-    int i, k;
-    p = ALLOC( Aig_MmStep_t, 1 );
-    memset( p, 0, sizeof(Aig_MmStep_t) );
-    p->nMems = nSteps;
-    // start the fixed memory managers
-    p->pMems = ALLOC( Aig_MmFixed_t *, p->nMems );
-    for ( i = 0; i < p->nMems; i++ )
-        p->pMems[i] = Aig_MmFixedStart( (8<<i), (1<<13) );
-    // set up the mapping of the required memory size into the corresponding manager
-    p->nMapSize = (4<<p->nMems);
-    p->pMap = ALLOC( Aig_MmFixed_t *, p->nMapSize+1 );
-    p->pMap[0] = NULL;
-    for ( k = 1; k <= 4; k++ )
-        p->pMap[k] = p->pMems[0];
-    for ( i = 0; i < p->nMems; i++ )
-        for ( k = (4<<i)+1; k <= (8<<i); k++ )
-            p->pMap[k] = p->pMems[i];
-//for ( i = 1; i < 100; i ++ )
-//printf( "%10d: size = %10d\n", i, p->pMap[i]->nEntrySize );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the memory manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_MmStepStop( Aig_MmStep_t * p, int fVerbose )
-{
-    int i;
-    for ( i = 0; i < p->nMems; i++ )
-        Aig_MmFixedStop( p->pMems[i], fVerbose );
-//    if ( p->pLargeChunks ) 
-//    {
-//      for ( i = 0; i < p->nLargeChunks; i++ )
-//          free( p->pLargeChunks[i] );
-//      free( p->pLargeChunks );
-//    }
-    free( p->pMems );
-    free( p->pMap );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the entry.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Aig_MmStepEntryFetch( Aig_MmStep_t * p, int nBytes )
-{
-    if ( nBytes == 0 )
-        return NULL;
-    if ( nBytes > p->nMapSize )
-    {
-//        printf( "Allocating %d bytes.\n", nBytes );
-/*
-        if ( p->nLargeChunks == p->nLargeChunksAlloc )
-        {
-            if ( p->nLargeChunksAlloc == 0 )
-                p->nLargeChunksAlloc = 5;
-            p->nLargeChunksAlloc *= 2;
-            p->pLargeChunks = REALLOC( char *, p->pLargeChunks, p->nLargeChunksAlloc ); 
-        }
-        p->pLargeChunks[ p->nLargeChunks++ ] = ALLOC( char, nBytes );
-        return p->pLargeChunks[ p->nLargeChunks - 1 ];
-*/
-        return ALLOC( char, nBytes );
-    }
-    return Aig_MmFixedEntryFetch( p->pMap[nBytes] );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Recycles the entry.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_MmStepEntryRecycle( Aig_MmStep_t * p, char * pEntry, int nBytes )
-{
-    if ( nBytes == 0 )
-        return;
-    if ( nBytes > p->nMapSize )
-    {
-        free( pEntry );
-        return;
-    }
-    Aig_MmFixedEntryRecycle( p->pMap[nBytes], pEntry );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_MmStepReadMemUsage( Aig_MmStep_t * p )
-{
-    int i, nMemTotal = 0;
-    for ( i = 0; i < p->nMems; i++ )
-        nMemTotal += p->pMems[i]->nMemoryAlloc;
-    return nMemTotal;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
diff --git a/src/aig/aig/aigMffc.c b/src/aig/aig/aigMffc.c
deleted file mode 100644
index 47ce896d..00000000
--- a/src/aig/aig/aigMffc.c
+++ /dev/null
@@ -1,297 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigMffc.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Computation of MFFCs.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigMffc.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Dereferences the node's MFFC.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_NodeDeref_rec( Aig_Obj_t * pNode, unsigned LevelMin )
-{
-    Aig_Obj_t * pFanin;
-    int Counter = 0;
-    if ( Aig_ObjIsPi(pNode) )
-        return 0;
-    // consider the first fanin
-    pFanin = Aig_ObjFanin0(pNode);
-    assert( pFanin->nRefs > 0 );
-    if ( --pFanin->nRefs == 0 && (!LevelMin || pFanin->Level > LevelMin) )
-        Counter += Aig_NodeDeref_rec( pFanin, LevelMin );
-    // skip the buffer
-    if ( Aig_ObjIsBuf(pNode) )
-        return Counter;
-    assert( Aig_ObjIsNode(pNode) );
-    // consider the second fanin
-    pFanin = Aig_ObjFanin1(pNode);
-    assert( pFanin->nRefs > 0 );
-    if ( --pFanin->nRefs == 0 && (!LevelMin || pFanin->Level > LevelMin) )
-        Counter += Aig_NodeDeref_rec( pFanin, LevelMin );
-    return Counter + 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [References the node's MFFC.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_NodeRef_rec( Aig_Obj_t * pNode, unsigned LevelMin )
-{
-    Aig_Obj_t * pFanin;
-    int Counter = 0;
-    if ( Aig_ObjIsPi(pNode) )
-        return 0;
-    // consider the first fanin
-    pFanin = Aig_ObjFanin0(pNode);
-    if ( pFanin->nRefs++ == 0 && (!LevelMin || pFanin->Level > LevelMin) )
-        Counter += Aig_NodeRef_rec( pFanin, LevelMin );
-    // skip the buffer
-    if ( Aig_ObjIsBuf(pNode) )
-        return Counter;
-    assert( Aig_ObjIsNode(pNode) );
-    // consider the second fanin
-    pFanin = Aig_ObjFanin1(pNode);
-    if ( pFanin->nRefs++ == 0 && (!LevelMin || pFanin->Level > LevelMin) )
-        Counter += Aig_NodeRef_rec( pFanin, LevelMin );
-    return Counter + 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [References the node's MFFC.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_NodeRefLabel_rec( Aig_Man_t * p, Aig_Obj_t * pNode, unsigned LevelMin )
-{
-    Aig_Obj_t * pFanin;
-    int Counter = 0;
-    if ( Aig_ObjIsPi(pNode) )
-        return 0;
-    Aig_ObjSetTravIdCurrent( p, pNode );
-    // consider the first fanin
-    pFanin = Aig_ObjFanin0(pNode);
-    if ( pFanin->nRefs++ == 0 && (!LevelMin || pFanin->Level > LevelMin) )
-        Counter += Aig_NodeRefLabel_rec( p, pFanin, LevelMin );
-    if ( Aig_ObjIsBuf(pNode) )
-        return Counter;
-    assert( Aig_ObjIsNode(pNode) );
-    // consider the second fanin
-    pFanin = Aig_ObjFanin1(pNode);
-    if ( pFanin->nRefs++ == 0 && (!LevelMin || pFanin->Level > LevelMin) )
-        Counter += Aig_NodeRefLabel_rec( p, pFanin, LevelMin );
-    return Counter + 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the internal and boundary nodes in the derefed MFFC.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_NodeMffsSupp_rec( Aig_Man_t * p, Aig_Obj_t * pNode, unsigned LevelMin, Vec_Ptr_t * vSupp, int fTopmost, Aig_Obj_t * pObjSkip )
-{
-    // skip visited nodes
-    if ( Aig_ObjIsTravIdCurrent(p, pNode) )
-        return;
-    Aig_ObjSetTravIdCurrent(p, pNode);
-    // add to the new support nodes
-    if ( !fTopmost && pNode != pObjSkip && (Aig_ObjIsPi(pNode) || pNode->nRefs > 0 || pNode->Level <= LevelMin) )
-    {
-        if ( vSupp ) Vec_PtrPush( vSupp, pNode );
-        return;
-    }
-    assert( Aig_ObjIsNode(pNode) );
-    // recur on the children
-    Aig_NodeMffsSupp_rec( p, Aig_ObjFanin0(pNode), LevelMin, vSupp, 0, pObjSkip );
-    Aig_NodeMffsSupp_rec( p, Aig_ObjFanin1(pNode), LevelMin, vSupp, 0, pObjSkip );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the support of depth-limited MFFC.]
-
-  Description [Returns the number of internal nodes in the MFFC.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_NodeMffsSupp( Aig_Man_t * p, Aig_Obj_t * pNode, int LevelMin, Vec_Ptr_t * vSupp )
-{
-    int ConeSize1, ConeSize2;
-    assert( !Aig_IsComplement(pNode) );
-    assert( Aig_ObjIsNode(pNode) );
-    if ( vSupp ) Vec_PtrClear( vSupp );
-    Aig_ManIncrementTravId( p );
-    ConeSize1 = Aig_NodeDeref_rec( pNode, LevelMin );
-    Aig_NodeMffsSupp_rec( p, pNode, LevelMin, vSupp, 1, NULL );
-    ConeSize2 = Aig_NodeRef_rec( pNode, LevelMin );
-    assert( ConeSize1 == ConeSize2 );
-    assert( ConeSize1 > 0 );
-    return ConeSize1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Labels the nodes in the MFFC.]
-
-  Description [Returns the number of internal nodes in the MFFC.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_NodeMffsLabel( Aig_Man_t * p, Aig_Obj_t * pNode )
-{
-    int ConeSize1, ConeSize2;
-    assert( !Aig_IsComplement(pNode) );
-    assert( Aig_ObjIsNode(pNode) );
-    Aig_ManIncrementTravId( p );
-    ConeSize1 = Aig_NodeDeref_rec( pNode, 0 );
-    ConeSize2 = Aig_NodeRefLabel_rec( p, pNode, 0 );
-    assert( ConeSize1 == ConeSize2 );
-    assert( ConeSize1 > 0 );
-    return ConeSize1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Labels the nodes in the MFFC.]
-
-  Description [Returns the number of internal nodes in the MFFC.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_NodeMffsLabelCut( Aig_Man_t * p, Aig_Obj_t * pNode, Vec_Ptr_t * vLeaves )
-{
-    Aig_Obj_t * pObj;
-    int i, ConeSize1, ConeSize2;
-    assert( !Aig_IsComplement(pNode) );
-    assert( Aig_ObjIsNode(pNode) );
-    Aig_ManIncrementTravId( p );
-    Vec_PtrForEachEntry( vLeaves, pObj, i )
-        pObj->nRefs++;
-    ConeSize1 = Aig_NodeDeref_rec( pNode, 0 );
-    ConeSize2 = Aig_NodeRefLabel_rec( p, pNode, 0 );
-    Vec_PtrForEachEntry( vLeaves, pObj, i )
-        pObj->nRefs--;
-    assert( ConeSize1 == ConeSize2 );
-    assert( ConeSize1 > 0 );
-    return ConeSize1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Expands the cut by adding the most closely related node.]
-
-  Description [Returns 1 if the cut exists.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_NodeMffsExtendCut( Aig_Man_t * p, Aig_Obj_t * pNode, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vResult )
-{
-    Aig_Obj_t * pObj, * pLeafBest;
-    int i, LevelMax, ConeSize1, ConeSize2, ConeCur1, ConeCur2, ConeBest;
-    // dereference the current cut
-    LevelMax = 0;
-    Vec_PtrForEachEntry( vLeaves, pObj, i )
-        LevelMax = AIG_MAX( LevelMax, (int)pObj->Level );
-    if ( LevelMax == 0 )
-        return 0;
-    // dereference the cut
-    ConeSize1 = Aig_NodeDeref_rec( pNode, 0 );
-    // try expanding each node in the boundary
-    ConeBest = AIG_INFINITY;
-    pLeafBest = NULL;
-    Vec_PtrForEachEntry( vLeaves, pObj, i )
-    {
-        if ( (int)pObj->Level != LevelMax )
-            continue;
-        ConeCur1 = Aig_NodeDeref_rec( pObj, 0 );
-        if ( ConeBest > ConeCur1 )
-        {
-            ConeBest = ConeCur1;
-            pLeafBest = pObj;
-        }
-        ConeCur2 = Aig_NodeRef_rec( pObj, 0 );
-        assert( ConeCur1 == ConeCur2 );
-    }
-    assert( pLeafBest != NULL );
-    assert( Aig_ObjIsNode(pLeafBest) );
-    // deref the best leaf
-    ConeCur1 = Aig_NodeDeref_rec( pLeafBest, 0 );
-    // collect the cut nodes
-    Vec_PtrClear( vResult );
-    Aig_ManIncrementTravId( p );
-    Aig_NodeMffsSupp_rec( p, pNode, 0, vResult, 1, pLeafBest );
-    // ref the nodes
-    ConeCur2 = Aig_NodeRef_rec( pLeafBest, 0 );
-    assert( ConeCur1 == ConeCur2 );
-    // ref the original node
-    ConeSize2 = Aig_NodeRef_rec( pNode, 0 );
-    assert( ConeSize1 == ConeSize2 );
-    return 1;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigObj.c b/src/aig/aig/aigObj.c
deleted file mode 100644
index 34c07dce..00000000
--- a/src/aig/aig/aigObj.c
+++ /dev/null
@@ -1,416 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigObj.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Adding/removing objects.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigObj.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Creates primary input.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_ObjCreatePi( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    pObj = Aig_ManFetchMemory( p );
-    pObj->Type = AIG_OBJ_PI;
-    Vec_PtrPush( p->vPis, pObj );
-    p->nObjs[AIG_OBJ_PI]++;
-    return pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates primary output with the given driver.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_ObjCreatePo( Aig_Man_t * p, Aig_Obj_t * pDriver )
-{
-    Aig_Obj_t * pObj;
-    pObj = Aig_ManFetchMemory( p );
-    pObj->Type = AIG_OBJ_PO;
-    Vec_PtrPush( p->vPos, pObj );
-    Aig_ObjConnect( p, pObj, pDriver, NULL );
-    p->nObjs[AIG_OBJ_PO]++;
-    return pObj;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Create the new node assuming it does not exist.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_ObjCreate( Aig_Man_t * p, Aig_Obj_t * pGhost )
-{
-    Aig_Obj_t * pObj;
-    assert( !Aig_IsComplement(pGhost) );
-    assert( Aig_ObjIsHash(pGhost) );
-    assert( pGhost == &p->Ghost );
-    // get memory for the new object
-    pObj = Aig_ManFetchMemory( p );
-    pObj->Type = pGhost->Type;
-    // add connections
-    Aig_ObjConnect( p, pObj, pGhost->pFanin0, pGhost->pFanin1 );
-    // update node counters of the manager
-    p->nObjs[Aig_ObjType(pObj)]++;
-    assert( pObj->pData == NULL );
-    return pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Connect the object to the fanin.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjConnect( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFan0, Aig_Obj_t * pFan1 )
-{
-    assert( !Aig_IsComplement(pObj) );
-    assert( !Aig_ObjIsPi(pObj) );
-    // add the first fanin
-    pObj->pFanin0 = pFan0;
-    pObj->pFanin1 = pFan1;
-    // increment references of the fanins and add their fanouts
-    if ( pFan0 != NULL )
-    {
-        assert( Aig_ObjFanin0(pObj)->Type > 0 );
-        Aig_ObjRef( Aig_ObjFanin0(pObj) );
-        if ( p->pFanData )
-            Aig_ObjAddFanout( p, Aig_ObjFanin0(pObj), pObj );
-    }
-    if ( pFan1 != NULL )
-    {
-        assert( Aig_ObjFanin1(pObj)->Type > 0 );
-        Aig_ObjRef( Aig_ObjFanin1(pObj) );
-        if ( p->pFanData )
-            Aig_ObjAddFanout( p, Aig_ObjFanin1(pObj), pObj );
-    }
-    // set level and phase
-    pObj->Level = Aig_ObjLevelNew( pObj );
-    pObj->fPhase = Aig_ObjPhaseReal(pFan0) & Aig_ObjPhaseReal(pFan1);
-    // add the node to the structural hash table
-    if ( Aig_ObjIsHash(pObj) )
-        Aig_TableInsert( p, pObj );
-    // add the node to the dynamically updated topological order
-    if ( p->pOrderData && Aig_ObjIsNode(pObj) )
-        Aig_ObjOrderInsert( p, pObj->Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Disconnects the object from the fanins.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjDisconnect( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    assert( !Aig_IsComplement(pObj) );
-    // remove connections
-    if ( pObj->pFanin0 != NULL )
-    {
-        if ( p->pFanData )
-            Aig_ObjRemoveFanout( p, Aig_ObjFanin0(pObj), pObj );
-        Aig_ObjDeref(Aig_ObjFanin0(pObj));
-    }
-    if ( pObj->pFanin1 != NULL )
-    {
-        if ( p->pFanData )
-            Aig_ObjRemoveFanout( p, Aig_ObjFanin1(pObj), pObj );
-        Aig_ObjDeref(Aig_ObjFanin1(pObj));
-    }
-    // remove the node from the structural hash table
-    if ( Aig_ObjIsHash(pObj) )
-        Aig_TableDelete( p, pObj );
-    // add the first fanin
-    pObj->pFanin0 = NULL;
-    pObj->pFanin1 = NULL;
-    // remove the node from the dynamically updated topological order
-    if ( p->pOrderData && Aig_ObjIsNode(pObj) )
-        Aig_ObjOrderRemove( p, pObj->Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjDelete( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    assert( !Aig_IsComplement(pObj) );
-    assert( !Aig_ObjIsTerm(pObj) );
-    assert( Aig_ObjRefs(pObj) == 0 );
-    if ( p->pFanData && Aig_ObjIsBuf(pObj) )
-        Vec_PtrRemove( p->vBufs, pObj );
-    p->nObjs[pObj->Type]--;
-    Vec_PtrWriteEntry( p->vObjs, pObj->Id, NULL );
-    Aig_ManRecycleMemory( p, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the MFFC of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjDelete_rec( Aig_Man_t * p, Aig_Obj_t * pObj, int fFreeTop )
-{
-    Aig_Obj_t * pFanin0, * pFanin1;
-    assert( !Aig_IsComplement(pObj) );
-    if ( Aig_ObjIsConst1(pObj) || Aig_ObjIsPi(pObj) )
-        return;
-    assert( !Aig_ObjIsPo(pObj) );
-    pFanin0 = Aig_ObjFanin0(pObj);
-    pFanin1 = Aig_ObjFanin1(pObj);
-    Aig_ObjDisconnect( p, pObj );
-    if ( fFreeTop )
-        Aig_ObjDelete( p, pObj );
-    if ( pFanin0 && !Aig_ObjIsNone(pFanin0) && Aig_ObjRefs(pFanin0) == 0 )
-        Aig_ObjDelete_rec( p, pFanin0, 1 );
-    if ( pFanin1 && !Aig_ObjIsNone(pFanin1) && Aig_ObjRefs(pFanin1) == 0 )
-        Aig_ObjDelete_rec( p, pFanin1, 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Replaces the first fanin of the node by the new fanin.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjPatchFanin0( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFaninNew )
-{
-    Aig_Obj_t * pFaninOld;
-    assert( !Aig_IsComplement(pObj) );
-    assert( Aig_ObjIsPo(pObj) );
-    pFaninOld = Aig_ObjFanin0(pObj);
-    // decrement ref and remove fanout
-    if ( p->pFanData )
-        Aig_ObjRemoveFanout( p, pFaninOld, pObj );
-    Aig_ObjDeref( pFaninOld );
-    // update the fanin
-    pObj->pFanin0 = pFaninNew;
-    // increment ref and add fanout
-    if ( p->pFanData )
-        Aig_ObjAddFanout( p, Aig_ObjFanin0(pObj), pObj );
-    Aig_ObjRef( Aig_ObjFanin0(pObj) );
-    // get rid of old fanin
-    if ( !Aig_ObjIsPi(pFaninOld) && !Aig_ObjIsConst1(pFaninOld) && Aig_ObjRefs(pFaninOld) == 0 )
-        Aig_ObjDelete_rec( p, pFaninOld, 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Replaces node with a buffer fanin by a node without them.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_NodeFixBufferFanins( Aig_Man_t * p, Aig_Obj_t * pObj, int fNodesOnly, int fUpdateLevel )
-{
-    Aig_Obj_t * pFanReal0, * pFanReal1, * pResult;
-    p->nBufFixes++;
-    if ( Aig_ObjIsPo(pObj) )
-    {
-        assert( Aig_ObjIsBuf(Aig_ObjFanin0(pObj)) );
-        pFanReal0 = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-        assert( Aig_ObjPhaseReal(Aig_ObjChild0(pObj)) == Aig_ObjPhaseReal(pFanReal0) );
-        Aig_ObjPatchFanin0( p, pObj, pFanReal0 );
-        return;
-    }
-    assert( Aig_ObjIsNode(pObj) );
-    assert( Aig_ObjIsBuf(Aig_ObjFanin0(pObj)) || Aig_ObjIsBuf(Aig_ObjFanin1(pObj)) );
-    // get the real fanins
-    pFanReal0 = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-    pFanReal1 = Aig_ObjReal_rec( Aig_ObjChild1(pObj) );
-    // get the new node
-    if ( Aig_ObjIsNode(pObj) )
-        pResult = Aig_Oper( p, pFanReal0, pFanReal1, Aig_ObjType(pObj) );
-//    else if ( Aig_ObjIsLatch(pObj) )
-//        pResult = Aig_Latch( p, pFanReal0, Aig_ObjInit(pObj) );
-    else 
-        assert( 0 );
-    // replace the node with buffer by the node without buffer
-    Aig_ObjReplace( p, pObj, pResult, fNodesOnly, fUpdateLevel );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of dangling nodes removed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     [] 
-
-***********************************************************************/
-int Aig_ManPropagateBuffers( Aig_Man_t * p, int fNodesOnly, int fUpdateLevel )
-{
-    Aig_Obj_t * pObj;
-    int nSteps;
-    assert( p->pFanData );
-    for ( nSteps = 0; Vec_PtrSize(p->vBufs) > 0; nSteps++ )
-    {
-        // get the node with a buffer fanin
-        for ( pObj = Vec_PtrEntryLast(p->vBufs); Aig_ObjIsBuf(pObj); pObj = Aig_ObjFanout0(p, pObj) );
-        // replace this node by a node without buffer
-        Aig_NodeFixBufferFanins( p, pObj, fNodesOnly, fUpdateLevel );
-        // stop if a cycle occured
-        if ( nSteps > 1000000 )
-        {
-            printf( "Error: A cycle is encountered while propagating buffers.\n" );
-            break;
-        }
-    }
-    return nSteps;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Replaces one object by another.]
-
-  Description [The new object (pObjNew) should be used instead of the old 
-  object (pObjOld). If the new object is complemented or used, the buffer 
-  is added and the new object remains in the manager; otherwise, the new
-  object is deleted.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjReplace( Aig_Man_t * p, Aig_Obj_t * pObjOld, Aig_Obj_t * pObjNew, int fNodesOnly, int fUpdateLevel )
-{
-    Aig_Obj_t * pObjNewR = Aig_Regular(pObjNew);
-    // the object to be replaced cannot be complemented
-    assert( !Aig_IsComplement(pObjOld) );
-    // the object to be replaced cannot be a terminal
-    assert( !Aig_ObjIsPi(pObjOld) && !Aig_ObjIsPo(pObjOld) );
-    // the object to be used cannot be a buffer or a PO
-    assert( !Aig_ObjIsBuf(pObjNewR) && !Aig_ObjIsPo(pObjNewR) );
-    // the object cannot be the same
-    assert( pObjOld != pObjNewR );
-    // make sure object is not pointing to itself
-    assert( pObjOld != Aig_ObjFanin0(pObjNewR) );
-    assert( pObjOld != Aig_ObjFanin1(pObjNewR) );
-    // recursively delete the old node - but leave the object there
-    pObjNewR->nRefs++;
-    Aig_ObjDelete_rec( p, pObjOld, 0 );
-    pObjNewR->nRefs--;
-    // if the new object is complemented or already used, create a buffer
-    p->nObjs[pObjOld->Type]--;
-    if ( Aig_IsComplement(pObjNew) || Aig_ObjRefs(pObjNew) > 0 || (fNodesOnly && !Aig_ObjIsNode(pObjNew)) )
-    {
-        pObjOld->Type = AIG_OBJ_BUF;
-        Aig_ObjConnect( p, pObjOld, pObjNew, NULL );
-        p->nBufReplaces++;
-    }
-    else
-    {
-        Aig_Obj_t * pFanin0 = pObjNew->pFanin0;
-        Aig_Obj_t * pFanin1 = pObjNew->pFanin1;
-        int LevelOld = pObjOld->Level;
-        pObjOld->Type = pObjNew->Type;
-        Aig_ObjDisconnect( p, pObjNew );
-        Aig_ObjConnect( p, pObjOld, pFanin0, pFanin1 );
-        // delete the new object
-        Aig_ObjDelete( p, pObjNew );
-        // update levels
-        if ( p->pFanData )
-        {
-            pObjOld->Level = LevelOld;
-            Aig_ManUpdateLevel( p, pObjOld );
-        }
-        if ( fUpdateLevel )
-        {
-            Aig_ObjClearReverseLevel( p, pObjOld );
-            Aig_ManUpdateReverseLevel( p, pObjOld );
-        }
-    }
-    p->nObjs[pObjOld->Type]++;
-    // store buffers if fanout is allocated
-    if ( p->pFanData && Aig_ObjIsBuf(pObjOld) )
-    {
-        Vec_PtrPush( p->vBufs, pObjOld );
-        p->nBufMax = AIG_MAX( p->nBufMax, Vec_PtrSize(p->vBufs) );
-        Aig_ManPropagateBuffers( p, fNodesOnly, fUpdateLevel );
-    }
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigOper.c b/src/aig/aig/aigOper.c
deleted file mode 100644
index 68216ee0..00000000
--- a/src/aig/aig/aigOper.c
+++ /dev/null
@@ -1,532 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigOper.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [AIG operations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigOper.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// procedure to detect an EXOR gate
-static inline int Aig_ObjIsExorType( Aig_Obj_t * p0, Aig_Obj_t * p1, Aig_Obj_t ** ppFan0, Aig_Obj_t ** ppFan1 )
-{
-    if ( !Aig_IsComplement(p0) || !Aig_IsComplement(p1) )
-        return 0;
-    p0 = Aig_Regular(p0);
-    p1 = Aig_Regular(p1);
-    if ( !Aig_ObjIsAnd(p0) || !Aig_ObjIsAnd(p1) )
-        return 0;
-    if ( Aig_ObjFanin0(p0) != Aig_ObjFanin0(p1) || Aig_ObjFanin1(p0) != Aig_ObjFanin1(p1) )
-        return 0;
-    if ( Aig_ObjFaninC0(p0) == Aig_ObjFaninC0(p1) || Aig_ObjFaninC1(p0) == Aig_ObjFaninC1(p1) )
-        return 0;
-    *ppFan0 = Aig_ObjChild0(p0);
-    *ppFan1 = Aig_ObjChild1(p0);
-    return 1;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Returns i-th elementary variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_IthVar( Aig_Man_t * p, int i )
-{
-    int v;
-    for ( v = Aig_ManPiNum(p); v <= i; v++ )
-        Aig_ObjCreatePi( p );
-    assert( i < Vec_PtrSize(p->vPis) );
-    return Aig_ManPi( p, i );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Perform one operation.]
-
-  Description [The argument nodes can be complemented.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Oper( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1, Aig_Type_t Type )
-{
-    if ( Type == AIG_OBJ_AND )
-        return Aig_And( p, p0, p1 );
-    if ( Type == AIG_OBJ_EXOR )
-        return Aig_Exor( p, p0, p1 );
-    assert( 0 );
-    return NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the canonical form of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_CanonPair_rec( Aig_Man_t * p, Aig_Obj_t * pGhost )
-{
-    Aig_Obj_t * pResult, * pLat0, * pLat1;
-    int fCompl0, fCompl1;
-    Aig_Type_t Type;
-    assert( Aig_ObjIsNode(pGhost) );
-    // consider the case when the pair is canonical
-    if ( !Aig_ObjIsLatch(Aig_ObjFanin0(pGhost)) || !Aig_ObjIsLatch(Aig_ObjFanin1(pGhost)) )
-    {
-        if ( pResult = Aig_TableLookup( p, pGhost ) )
-            return pResult;
-        return Aig_ObjCreate( p, pGhost );
-    }
-    /// remember the latches
-    pLat0 = Aig_ObjFanin0(pGhost);
-    pLat1 = Aig_ObjFanin1(pGhost);
-    // remember type and compls
-    Type = Aig_ObjType(pGhost);
-    fCompl0 = Aig_ObjFaninC0(pGhost);
-    fCompl1 = Aig_ObjFaninC1(pGhost);
-    // call recursively
-    pResult = Aig_Oper( p, Aig_NotCond(Aig_ObjChild0(pLat0), fCompl0), Aig_NotCond(Aig_ObjChild0(pLat1), fCompl1), Type );
-    // build latch on top of this
-    return Aig_Latch( p, pResult, (Type == AIG_OBJ_AND)? fCompl0 & fCompl1 : fCompl0 ^ fCompl1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs canonicization step.]
-
-  Description [The argument nodes can be complemented.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_And( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1 )
-{
-    Aig_Obj_t * pGhost, * pResult;
-//    Aig_Obj_t * pFan0, * pFan1;
-    // check trivial cases
-    if ( p0 == p1 )
-        return p0;
-    if ( p0 == Aig_Not(p1) )
-        return Aig_Not(p->pConst1);
-    if ( Aig_Regular(p0) == p->pConst1 )
-        return p0 == p->pConst1 ? p1 : Aig_Not(p->pConst1);
-    if ( Aig_Regular(p1) == p->pConst1 )
-        return p1 == p->pConst1 ? p0 : Aig_Not(p->pConst1);
-    // check not so trivial cases
-    if ( p->fAddStrash && (Aig_ObjIsNode(Aig_Regular(p0)) || Aig_ObjIsNode(Aig_Regular(p1))) )
-    { // http://fmv.jku.at/papers/BrummayerBiere-MEMICS06.pdf
-        Aig_Obj_t * pFanA, * pFanB, * pFanC, * pFanD;
-        pFanA = Aig_ObjChild0(Aig_Regular(p0));
-        pFanB = Aig_ObjChild1(Aig_Regular(p0));
-        pFanC = Aig_ObjChild0(Aig_Regular(p1));
-        pFanD = Aig_ObjChild1(Aig_Regular(p1));
-        if ( Aig_IsComplement(p0) )
-        {
-            if ( pFanA == Aig_Not(p1) || pFanB == Aig_Not(p1) )
-                return p1;
-            if ( pFanB == p1 )
-                return Aig_And( p, Aig_Not(pFanA), pFanB );
-            if ( pFanA == p1 )
-                return Aig_And( p, Aig_Not(pFanB), pFanA );
-        }
-        else
-        {
-            if ( pFanA == Aig_Not(p1) || pFanB == Aig_Not(p1) )
-                return Aig_Not(p->pConst1);
-            if ( pFanA == p1 || pFanB == p1 )
-                return p0;
-        }
-        if ( Aig_IsComplement(p1) )
-        {
-            if ( pFanC == Aig_Not(p0) || pFanD == Aig_Not(p0) )
-                return p0;
-            if ( pFanD == p0 )
-                return Aig_And( p, Aig_Not(pFanC), pFanD );
-            if ( pFanC == p0 )
-                return Aig_And( p, Aig_Not(pFanD), pFanC );
-        }
-        else
-        {
-            if ( pFanC == Aig_Not(p0) || pFanD == Aig_Not(p0) )
-                return Aig_Not(p->pConst1);
-            if ( pFanC == p0 || pFanD == p0 )
-                return p1;
-        }
-        if ( !Aig_IsComplement(p0) && !Aig_IsComplement(p1) ) 
-        {
-            if ( pFanA == Aig_Not(pFanC) || pFanA == Aig_Not(pFanD) || pFanB == Aig_Not(pFanC) || pFanB == Aig_Not(pFanD) )
-                return Aig_Not(p->pConst1);
-            if ( pFanA == pFanC || pFanB == pFanC )
-                return Aig_And( p, p0, pFanD );
-            if ( pFanB == pFanC || pFanB == pFanD )
-                return Aig_And( p, pFanA, p1 );
-            if ( pFanA == pFanD || pFanB == pFanD )
-                return Aig_And( p, p0, pFanC );
-            if ( pFanA == pFanC || pFanA == pFanD )
-                return Aig_And( p, pFanB, p1 );
-        }
-        else if ( Aig_IsComplement(p0) && !Aig_IsComplement(p1) )
-        {
-            if ( pFanA == Aig_Not(pFanC) || pFanA == Aig_Not(pFanD) || pFanB == Aig_Not(pFanC) || pFanB == Aig_Not(pFanD) )
-                return p1;
-            if ( pFanB == pFanC || pFanB == pFanD )
-                return Aig_And( p, Aig_Not(pFanA), p1 );
-            if ( pFanA == pFanC || pFanA == pFanD )
-                return Aig_And( p, Aig_Not(pFanB), p1 );
-        }
-        else if ( !Aig_IsComplement(p0) && Aig_IsComplement(p1) )
-        {
-            if ( pFanC == Aig_Not(pFanA) || pFanC == Aig_Not(pFanB) || pFanD == Aig_Not(pFanA) || pFanD == Aig_Not(pFanB) )
-                return p0;
-            if ( pFanD == pFanA || pFanD == pFanB )
-                return Aig_And( p, Aig_Not(pFanC), p0 );
-            if ( pFanC == pFanA || pFanC == pFanB )
-                return Aig_And( p, Aig_Not(pFanD), p0 );
-        }
-        else // if ( Aig_IsComplement(p0) && Aig_IsComplement(p1) )
-        {
-            if ( pFanA == pFanD && pFanB == Aig_Not(pFanC) )
-                return Aig_Not(pFanA);
-            if ( pFanB == pFanC && pFanA == Aig_Not(pFanD) )
-                return Aig_Not(pFanB);
-            if ( pFanA == pFanC && pFanB == Aig_Not(pFanD) )
-                return Aig_Not(pFanA);
-            if ( pFanB == pFanD && pFanA == Aig_Not(pFanC) )
-                return Aig_Not(pFanB);
-        }
-    }
-    // check if it can be an EXOR gate
-//    if ( Aig_ObjIsExorType( p0, p1, &pFan0, &pFan1 ) )
-//        return Aig_Exor( p, pFan0, pFan1 );
-    pGhost = Aig_ObjCreateGhost( p, p0, p1, AIG_OBJ_AND );
-    pResult = Aig_CanonPair_rec( p, pGhost );
-    return pResult;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the canonical form of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Latch( Aig_Man_t * p, Aig_Obj_t * pObj, int fInitOne )
-{
-    Aig_Obj_t * pGhost, * pResult;
-    pGhost = Aig_ObjCreateGhost( p, Aig_NotCond(pObj, fInitOne), NULL, AIG_OBJ_LATCH );
-    pResult = Aig_TableLookup( p, pGhost );
-    if ( pResult == NULL )
-        pResult = Aig_ObjCreate( p, pGhost );
-    return Aig_NotCond( pResult, fInitOne );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs canonicization step.]
-
-  Description [The argument nodes can be complemented.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Exor( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1 )
-{
-/*
-    Aig_Obj_t * pGhost, * pResult;
-    // check trivial cases
-    if ( p0 == p1 )
-        return Aig_Not(p->pConst1);
-    if ( p0 == Aig_Not(p1) )
-        return p->pConst1;
-    if ( Aig_Regular(p0) == p->pConst1 )
-        return Aig_NotCond( p1, p0 == p->pConst1 );
-    if ( Aig_Regular(p1) == p->pConst1 )
-        return Aig_NotCond( p0, p1 == p->pConst1 );
-    // check the table
-    pGhost = Aig_ObjCreateGhost( p, p0, p1, AIG_OBJ_EXOR );
-    if ( pResult = Aig_TableLookup( p, pGhost ) )
-        return pResult;
-    return Aig_ObjCreate( p, pGhost );
-*/
-    return Aig_Or( p, Aig_And(p, p0, Aig_Not(p1)), Aig_And(p, Aig_Not(p0), p1) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements Boolean OR.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Or( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1 )
-{
-    return Aig_Not( Aig_And( p, Aig_Not(p0), Aig_Not(p1) ) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements ITE operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Mux( Aig_Man_t * p, Aig_Obj_t * pC, Aig_Obj_t * p1, Aig_Obj_t * p0 )
-{
-/*    
-    Aig_Obj_t * pTempA1, * pTempA2, * pTempB1, * pTempB2, * pTemp;
-    int Count0, Count1;
-    // consider trivial cases
-    if ( p0 == Aig_Not(p1) )
-        return Aig_Exor( p, pC, p0 );
-    // other cases can be added
-    // implement the first MUX (F = C * x1 + C' * x0)
-
-    // check for constants here!!!
-
-    pTempA1 = Aig_TableLookup( p, Aig_ObjCreateGhost(p, pC,          p1, AIG_OBJ_AND) );
-    pTempA2 = Aig_TableLookup( p, Aig_ObjCreateGhost(p, Aig_Not(pC), p0, AIG_OBJ_AND) );
-    if ( pTempA1 && pTempA2 )
-    {
-        pTemp = Aig_TableLookup( p, Aig_ObjCreateGhost(p, Aig_Not(pTempA1), Aig_Not(pTempA2), AIG_OBJ_AND) );
-        if ( pTemp ) return Aig_Not(pTemp);
-    }
-    Count0 = (pTempA1 != NULL) + (pTempA2 != NULL);
-    // implement the second MUX (F' = C * x1' + C' * x0')
-    pTempB1 = Aig_TableLookup( p, Aig_ObjCreateGhost(p, pC,          Aig_Not(p1), AIG_OBJ_AND) );
-    pTempB2 = Aig_TableLookup( p, Aig_ObjCreateGhost(p, Aig_Not(pC), Aig_Not(p0), AIG_OBJ_AND) );
-    if ( pTempB1 && pTempB2 )
-    {
-        pTemp = Aig_TableLookup( p, Aig_ObjCreateGhost(p, Aig_Not(pTempB1), Aig_Not(pTempB2), AIG_OBJ_AND) );
-        if ( pTemp ) return pTemp;
-    }
-    Count1 = (pTempB1 != NULL) + (pTempB2 != NULL);
-    // compare and decide which one to implement
-    if ( Count0 >= Count1 )
-    {
-        pTempA1 = pTempA1? pTempA1 : Aig_And(p, pC,          p1);
-        pTempA2 = pTempA2? pTempA2 : Aig_And(p, Aig_Not(pC), p0);
-        return Aig_Or( p, pTempA1, pTempA2 );
-    }
-    pTempB1 = pTempB1? pTempB1 : Aig_And(p, pC,          Aig_Not(p1));
-    pTempB2 = pTempB2? pTempB2 : Aig_And(p, Aig_Not(pC), Aig_Not(p0));
-    return Aig_Not( Aig_Or( p, pTempB1, pTempB2 ) );
-*/
-    return Aig_Or( p, Aig_And(p, pC, p1), Aig_And(p, Aig_Not(pC), p0) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements ITE operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Maj( Aig_Man_t * p, Aig_Obj_t * pA, Aig_Obj_t * pB, Aig_Obj_t * pC )
-{
-    return Aig_Or( p, Aig_Or(p, Aig_And(p, pA, pB), Aig_And(p, pA, pC)), Aig_And(p, pB, pC) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Constructs the well-balanced tree of gates.]
-
-  Description [Disregards levels and possible logic sharing.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Multi_rec( Aig_Man_t * p, Aig_Obj_t ** ppObjs, int nObjs, Aig_Type_t Type )
-{
-    Aig_Obj_t * pObj1, * pObj2;
-    if ( nObjs == 1 )
-        return ppObjs[0];
-    pObj1 = Aig_Multi_rec( p, ppObjs,           nObjs/2,         Type );
-    pObj2 = Aig_Multi_rec( p, ppObjs + nObjs/2, nObjs - nObjs/2, Type );
-    return Aig_Oper( p, pObj1, pObj2, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Old code.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Multi( Aig_Man_t * p, Aig_Obj_t ** pArgs, int nArgs, Aig_Type_t Type )
-{
-    assert( Type == AIG_OBJ_AND || Type == AIG_OBJ_EXOR );
-    assert( nArgs > 0 );
-    return Aig_Multi_rec( p, pArgs, nArgs, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_Miter( Aig_Man_t * p, Vec_Ptr_t * vPairs )
-{
-    int i;
-    assert( vPairs->nSize > 0 );
-    assert( vPairs->nSize % 2 == 0 );
-    for ( i = 0; i < vPairs->nSize; i += 2 )
-        vPairs->pArray[i/2] = Aig_Not( Aig_Exor( p, vPairs->pArray[i], vPairs->pArray[i+1] ) );
-    vPairs->nSize = vPairs->nSize/2;
-    return Aig_Not( Aig_Multi_rec( p, (Aig_Obj_t **)vPairs->pArray, vPairs->nSize, AIG_OBJ_AND ) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_MiterTwo( Aig_Man_t * p, Vec_Ptr_t * vNodes1, Vec_Ptr_t * vNodes2 )
-{
-    int i;
-    assert( vNodes1->nSize > 0 && vNodes1->nSize > 0 );
-    assert( vNodes1->nSize == vNodes2->nSize );
-    for ( i = 0; i < vNodes1->nSize; i++ )
-        vNodes1->pArray[i] = Aig_Not( Aig_Exor( p, vNodes1->pArray[i], vNodes2->pArray[i] ) );
-    return Aig_Not( Aig_Multi_rec( p, (Aig_Obj_t **)vNodes1->pArray, vNodes1->nSize, AIG_OBJ_AND ) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates AND function with nVars inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_CreateAnd( Aig_Man_t * p, int nVars )
-{
-    Aig_Obj_t * pFunc;
-    int i;
-    pFunc = Aig_ManConst1( p );
-    for ( i = 0; i < nVars; i++ )
-        pFunc = Aig_And( p, pFunc, Aig_IthVar(p, i) );
-    return pFunc;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates AND function with nVars inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_CreateOr( Aig_Man_t * p, int nVars )
-{
-    Aig_Obj_t * pFunc;
-    int i;
-    pFunc = Aig_ManConst0( p );
-    for ( i = 0; i < nVars; i++ )
-        pFunc = Aig_Or( p, pFunc, Aig_IthVar(p, i) );
-    return pFunc;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates AND function with nVars inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_CreateExor( Aig_Man_t * p, int nVars )
-{
-    Aig_Obj_t * pFunc;
-    int i;
-    pFunc = Aig_ManConst0( p );
-    for ( i = 0; i < nVars; i++ )
-        pFunc = Aig_Exor( p, pFunc, Aig_IthVar(p, i) );
-    return pFunc;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigOrder.c b/src/aig/aig/aigOrder.c
deleted file mode 100644
index 62aeca6e..00000000
--- a/src/aig/aig/aigOrder.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigOrder.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Dynamically updated topological order.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigOrder.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Initializes the order datastructure.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManOrderStart( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    assert( Aig_ManBufNum(p) == 0 );
-    // allocate order datastructure
-    assert( p->pOrderData == NULL );
-    p->nOrderAlloc = 2 * Aig_ManObjNumMax(p);
-    if ( p->nOrderAlloc < (1<<12) )
-        p->nOrderAlloc = (1<<12);
-    p->pOrderData = ALLOC( unsigned, 2 * p->nOrderAlloc );
-    memset( p->pOrderData, 0xFF, sizeof(unsigned) * 2 * p->nOrderAlloc );
-    // add the constant node
-    p->pOrderData[0] = p->pOrderData[1] = 0;
-    p->iPrev = p->iNext = 0;
-    // add the internal nodes
-    Aig_ManForEachNode( p, pObj, i )
-        Aig_ObjOrderInsert( p, pObj->Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the order datastructure.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManOrderStop( Aig_Man_t * p )
-{
-    assert( p->pOrderData );
-    FREE( p->pOrderData );
-    p->nOrderAlloc = 0;
-    p->iPrev = p->iNext = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts an entry before iNext.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjOrderInsert( Aig_Man_t * p, int ObjId )
-{
-    int iPrev;
-    assert( ObjId != 0 );
-    assert( Aig_ObjIsNode( Aig_ManObj(p, ObjId) ) );
-    if ( ObjId >= p->nOrderAlloc )
-    {
-        int nOrderAlloc = 2 * ObjId; 
-        p->pOrderData = REALLOC( unsigned, p->pOrderData, 2 * nOrderAlloc );
-        memset( p->pOrderData + 2 * p->nOrderAlloc, 0xFF, sizeof(unsigned) * 2 * (nOrderAlloc - p->nOrderAlloc) );
-        p->nOrderAlloc = nOrderAlloc;
-    }
-    assert( p->pOrderData[2*ObjId] == 0xFFFFFFFF );   // prev
-    assert( p->pOrderData[2*ObjId+1] == 0xFFFFFFFF ); // next
-    iPrev = p->pOrderData[2*p->iNext];
-    assert( p->pOrderData[2*iPrev+1] == (unsigned)p->iNext );
-    p->pOrderData[2*ObjId] = iPrev;
-    p->pOrderData[2*iPrev+1] = ObjId;
-    p->pOrderData[2*p->iNext] = ObjId;
-    p->pOrderData[2*ObjId+1] = p->iNext;
-    p->nAndTotal++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes the entry.]
-
-  Description [If iPrev is removed, it slides backward. 
-  If iNext is removed, it slides forward.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjOrderRemove( Aig_Man_t * p, int ObjId )
-{
-    int iPrev, iNext;
-    assert( ObjId != 0 );
-    assert( Aig_ObjIsNode( Aig_ManObj(p, ObjId) ) );
-    iPrev = p->pOrderData[2*ObjId];
-    iNext = p->pOrderData[2*ObjId+1];
-    p->pOrderData[2*ObjId] = 0xFFFFFFFF;
-    p->pOrderData[2*ObjId+1] = 0xFFFFFFFF;
-    p->pOrderData[2*iNext] = iPrev;
-    p->pOrderData[2*iPrev+1] = iNext;
-    if ( p->iPrev == ObjId )
-    {
-        p->nAndPrev--;
-        p->iPrev = iPrev;
-    }
-    if ( p->iNext == ObjId )
-        p->iNext = iNext;
-    p->nAndTotal--;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Advances the order forward.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjOrderAdvance( Aig_Man_t * p )
-{
-    assert( p->pOrderData );
-    assert( p->pOrderData[2*p->iPrev+1] == (unsigned)p->iNext );
-    p->iPrev = p->iNext;
-    p->nAndPrev++;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigPart.c b/src/aig/aig/aigPart.c
deleted file mode 100644
index 65e35fc4..00000000
--- a/src/aig/aig/aigPart.c
+++ /dev/null
@@ -1,990 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigPart.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [AIG partitioning package.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigPart.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Part_Man_t_     Part_Man_t;
-struct Part_Man_t_
-{
-    int              nChunkSize;    // the size of one chunk of memory (~1 Mb)
-    int              nStepSize;     // the step size in saving memory (~64 bytes)
-    char *           pFreeBuf;      // the pointer to free memory
-    int              nFreeSize;     // the size of remaining free memory
-    Vec_Ptr_t *      vMemory;       // the memory allocated
-    Vec_Ptr_t *      vFree;         // the vector of free pieces of memory
-};
-
-typedef struct Part_One_t_     Part_One_t;
-struct Part_One_t_
-{
-    int              nRefs;         // the number of references
-    int              nOuts;         // the number of outputs
-    int              nOutsAlloc;    // the array size
-    int              pOuts[0];      // the array of outputs
-};
-
-static inline int    Part_SizeType( int nSize, int nStepSize )     { return nSize / nStepSize + ((nSize % nStepSize) > 0); }
-static inline char * Part_OneNext( char * pPart )                  { return *((char **)pPart);                             }
-static inline void   Part_OneSetNext( char * pPart, char * pNext ) { *((char **)pPart) = pNext;                            }
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Start the memory manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Part_Man_t * Part_ManStart( int nChunkSize, int nStepSize )
-{
-    Part_Man_t * p;
-    p = ALLOC( Part_Man_t, 1 );
-    memset( p, 0, sizeof(Part_Man_t) );
-    p->nChunkSize = nChunkSize;
-    p->nStepSize  = nStepSize;
-    p->vMemory    = Vec_PtrAlloc( 1000 );
-    p->vFree      = Vec_PtrAlloc( 1000 );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the memory manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Part_ManStop( Part_Man_t * p )
-{
-    void * pMemory;
-    int i;
-    Vec_PtrForEachEntry( p->vMemory, pMemory, i )
-        free( pMemory );
-    Vec_PtrFree( p->vMemory );
-    Vec_PtrFree( p->vFree );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Fetches the memory entry of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Part_ManFetch( Part_Man_t * p, int nSize )
-{
-    int Type, nSizeReal;
-    char * pMemory;
-    assert( nSize > 0 );
-    Type = Part_SizeType( nSize, p->nStepSize );
-    Vec_PtrFillExtra( p->vFree, Type + 1, NULL );
-    if ( pMemory = Vec_PtrEntry( p->vFree, Type ) )
-    {
-        Vec_PtrWriteEntry( p->vFree, Type, Part_OneNext(pMemory) );
-        return pMemory;
-    }
-    nSizeReal = p->nStepSize * Type;
-    if ( p->nFreeSize < nSizeReal )
-    {
-        p->pFreeBuf = ALLOC( char, p->nChunkSize );
-        p->nFreeSize = p->nChunkSize;
-        Vec_PtrPush( p->vMemory, p->pFreeBuf );
-    }
-    assert( p->nFreeSize >= nSizeReal );
-    pMemory = p->pFreeBuf;
-    p->pFreeBuf  += nSizeReal;
-    p->nFreeSize -= nSizeReal;
-    return pMemory;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recycles the memory entry of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Part_ManRecycle( Part_Man_t * p, char * pMemory, int nSize )
-{
-    int Type;
-    Type = Part_SizeType( nSize, p->nStepSize );
-    Vec_PtrFillExtra( p->vFree, Type + 1, NULL );
-    Part_OneSetNext( pMemory, Vec_PtrEntry(p->vFree, Type) );
-    Vec_PtrWriteEntry( p->vFree, Type, pMemory );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Fetches the memory entry of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Part_One_t * Part_ManFetchEntry( Part_Man_t * p, int nWords, int nRefs )
-{
-    Part_One_t * pPart;
-    pPart = (Part_One_t *)Part_ManFetch( p, sizeof(Part_One_t) + sizeof(int) * nWords );
-    pPart->nRefs = nRefs;
-    pPart->nOuts = 0;
-    pPart->nOutsAlloc = nWords;
-    return pPart;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recycles the memory entry of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Part_ManRecycleEntry( Part_Man_t * p, Part_One_t * pEntry )
-{
-    assert( pEntry->nOuts <= pEntry->nOutsAlloc );
-    assert( pEntry->nOuts >= pEntry->nOutsAlloc/2 );
-    Part_ManRecycle( p, (char *)pEntry, sizeof(Part_One_t) + sizeof(int) * pEntry->nOutsAlloc );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Merges two entries.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Part_One_t * Part_ManMergeEntry( Part_Man_t * pMan, Part_One_t * p1, Part_One_t * p2, int nRefs )
-{
-    Part_One_t * p = Part_ManFetchEntry( pMan, p1->nOuts + p2->nOuts, nRefs );
-    int * pBeg1 = p1->pOuts;
-    int * pBeg2 = p2->pOuts;
-    int * pBeg  = p->pOuts;
-    int * pEnd1 = p1->pOuts + p1->nOuts;
-    int * pEnd2 = p2->pOuts + p2->nOuts;
-    while ( pBeg1 < pEnd1 && pBeg2 < pEnd2 )
-    {
-        if ( *pBeg1 == *pBeg2 )
-            *pBeg++ = *pBeg1++, pBeg2++;
-        else if ( *pBeg1 < *pBeg2 )
-            *pBeg++ = *pBeg1++;
-        else 
-            *pBeg++ = *pBeg2++;
-    }
-    while ( pBeg1 < pEnd1 )
-        *pBeg++ = *pBeg1++;
-    while ( pBeg2 < pEnd2 )
-        *pBeg++ = *pBeg2++;
-    p->nOuts = pBeg - p->pOuts;
-    assert( p->nOuts <= p->nOutsAlloc );
-    assert( p->nOuts >= p1->nOuts );
-    assert( p->nOuts >= p2->nOuts );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Tranfers the entry.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Part_ManTransferEntry( Part_One_t * p )
-{
-    Vec_Int_t * vSupp;
-    int i;
-    vSupp = Vec_IntAlloc( p->nOuts );
-    for ( i = 0; i < p->nOuts; i++ )
-        Vec_IntPush( vSupp, p->pOuts[i] );
-    return vSupp;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes supports of the POs in the multi-output AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManSupports( Aig_Man_t * pMan )
-{
-    Vec_Ptr_t * vSupports;
-    Vec_Int_t * vSupp;
-    Part_Man_t * p;
-    Part_One_t * pPart0, * pPart1;
-    Aig_Obj_t * pObj;
-    int i;
-    // set the number of PIs/POs
-    Aig_ManForEachPi( pMan, pObj, i )
-        pObj->pNext = (Aig_Obj_t *)i;
-    Aig_ManForEachPo( pMan, pObj, i )
-        pObj->pNext = (Aig_Obj_t *)i;
-    // start the support computation manager
-    p = Part_ManStart( 1 << 20, 1 << 6 );
-    // consider objects in the topological order
-    vSupports = Vec_PtrAlloc( Aig_ManPoNum(pMan) );
-    Aig_ManCleanData(pMan);
-    Aig_ManForEachObj( pMan, pObj, i )
-    {
-        if ( Aig_ObjIsNode(pObj) )
-        {
-            pPart0 = Aig_ObjFanin0(pObj)->pData;
-            pPart1 = Aig_ObjFanin1(pObj)->pData;
-            pObj->pData = Part_ManMergeEntry( p, pPart0, pPart1, pObj->nRefs );
-            assert( pPart0->nRefs > 0 );
-            if ( --pPart0->nRefs == 0 )
-                Part_ManRecycleEntry( p, pPart0 );
-            assert( pPart1->nRefs > 0 );
-            if ( --pPart1->nRefs == 0 )
-                Part_ManRecycleEntry( p, pPart1 );
-            continue;
-        }
-        if ( Aig_ObjIsPo(pObj) )
-        {
-            pPart0 = Aig_ObjFanin0(pObj)->pData;
-            vSupp = Part_ManTransferEntry(pPart0);
-            Vec_IntPush( vSupp, (int)pObj->pNext );
-            Vec_PtrPush( vSupports, vSupp );
-            assert( pPart0->nRefs > 0 );
-            if ( --pPart0->nRefs == 0 )
-                Part_ManRecycleEntry( p, pPart0 );
-            continue;
-        }
-        if ( Aig_ObjIsPi(pObj) )
-        {
-            if ( pObj->nRefs )
-            {
-                pPart0 = Part_ManFetchEntry( p, 1, pObj->nRefs );
-                pPart0->pOuts[ pPart0->nOuts++ ] = (int)pObj->pNext;
-                pObj->pData = pPart0;
-            }
-            continue;
-        }
-        if ( Aig_ObjIsConst1(pObj) )
-        {
-            if ( pObj->nRefs )
-                pObj->pData = Part_ManFetchEntry( p, 0, pObj->nRefs );
-            continue;
-        }
-        assert( 0 );
-    }
-//printf( "Memory usage = %d Mb.\n", Vec_PtrSize(p->vMemory) * p->nChunkSize / (1<<20) );
-    Part_ManStop( p );
-    // sort supports by size
-    Vec_VecSort( (Vec_Vec_t *)vSupports, 1 );
-    // clear the number of PIs/POs
-    Aig_ManForEachPi( pMan, pObj, i )
-        pObj->pNext = NULL;
-    Aig_ManForEachPo( pMan, pObj, i )
-        pObj->pNext = NULL;
-/*
-    Aig_ManForEachPo( pMan, pObj, i )
-        printf( "%d ", Vec_IntSize( (Vec_Int_t *)Vec_VecEntry(vSupports, i) ) );
-    printf( "\n" );
-*/
-    return vSupports;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Start char-bases support representation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Aig_ManSuppCharStart( Vec_Int_t * vOne, int nPis )
-{
-    unsigned * pBuffer;
-    int i, Entry;
-    int nWords = Aig_BitWordNum(nPis);
-    pBuffer = ALLOC( unsigned, nWords );
-    memset( pBuffer, 0, sizeof(unsigned) * nWords );
-    Vec_IntForEachEntry( vOne, Entry, i )
-    {
-        assert( Entry < nPis );
-        Aig_InfoSetBit( pBuffer, Entry );
-    }
-    return pBuffer;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Add to char-bases support representation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManSuppCharAdd( unsigned * pBuffer, Vec_Int_t * vOne, int nPis )
-{
-    int i, Entry;
-    Vec_IntForEachEntry( vOne, Entry, i )
-    {
-        assert( Entry < nPis );
-        Aig_InfoSetBit( pBuffer, Entry );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Find the common variables using char-bases support representation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManSuppCharCommon( unsigned * pBuffer, Vec_Int_t * vOne )
-{
-    int i, Entry, nCommon = 0;
-    Vec_IntForEachEntry( vOne, Entry, i )
-        nCommon += Aig_InfoHasBit(pBuffer, Entry);
-    return nCommon;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Find the best partition.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManPartitionSmartFindPart( Vec_Ptr_t * vPartSuppsAll, Vec_Ptr_t * vPartsAll, Vec_Ptr_t * vPartSuppsBit, int nSuppSizeLimit, Vec_Int_t * vOne )
-{
-    Vec_Int_t * vPartSupp;//, * vPart;
-    int Attract, Repulse, Value, ValueBest;
-    int i, nCommon, iBest;
-    iBest = -1;
-    ValueBest = 0;
-    Vec_PtrForEachEntry( vPartSuppsAll, vPartSupp, i )
-    {
-//        vPart = Vec_PtrEntry( vPartsAll, i );
-//        if ( nSuppSizeLimit > 0 && Vec_IntSize(vPart) >= nSuppSizeLimit )
-//            continue;
-//        nCommon = Vec_IntTwoCountCommon( vPartSupp, vOne );
-        nCommon = Aig_ManSuppCharCommon( Vec_PtrEntry(vPartSuppsBit, i), vOne );
-        if ( nCommon == 0 )
-            continue;
-        if ( nCommon == Vec_IntSize(vOne) )
-            return i;
-        // skip partitions whose size exceeds the limit
-        if ( nSuppSizeLimit > 0 && Vec_IntSize(vPartSupp) >= 2 * nSuppSizeLimit )
-            continue;
-        Attract = 1000 * nCommon / Vec_IntSize(vOne);
-        if ( Vec_IntSize(vPartSupp) < 100 )
-            Repulse = 1;
-        else
-            Repulse = 1+Aig_Base2Log(Vec_IntSize(vPartSupp)-100);
-        Value = Attract/Repulse;
-        if ( ValueBest < Value )
-        {
-            ValueBest = Value;
-            iBest = i;
-        }
-    }
-    if ( ValueBest < 75 )
-        return -1;
-    return iBest;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Perform the smart partitioning.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManPartitionPrint( Aig_Man_t * p, Vec_Ptr_t * vPartsAll, Vec_Ptr_t * vPartSuppsAll )
-{
-    Vec_Int_t * vOne;
-    int i, nOutputs, Counter;
-
-    Counter = 0;
-    Vec_PtrForEachEntry( vPartSuppsAll, vOne, i )
-    {
-        nOutputs = Vec_IntSize(Vec_PtrEntry(vPartsAll, i));
-        printf( "%d=(%d,%d) ", i, Vec_IntSize(vOne), nOutputs );
-        Counter += nOutputs;
-        if ( i == Vec_PtrSize(vPartsAll) - 1 )
-            break;
-    }
-    assert( Counter == Aig_ManPoNum(p) );
-//    printf( "\nTotal = %d. Outputs = %d.\n", Counter, Aig_ManPoNum(p) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Perform the smart partitioning.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManPartitionCompact( Vec_Ptr_t * vPartsAll, Vec_Ptr_t * vPartSuppsAll, int nSuppSizeLimit )
-{
-    Vec_Int_t * vOne, * vPart, * vPartSupp, * vTemp;
-    int i, iPart;
-
-    if ( nSuppSizeLimit == 0 )
-        nSuppSizeLimit = 200;
-
-    // pack smaller partitions into larger blocks
-    iPart = 0;
-    vPart = vPartSupp = NULL;
-    Vec_PtrForEachEntry( vPartSuppsAll, vOne, i )
-    {
-        if ( Vec_IntSize(vOne) < nSuppSizeLimit )
-        {
-            if ( vPartSupp == NULL )
-            {
-                assert( vPart == NULL );
-                vPartSupp = Vec_IntDup(vOne);
-                vPart = Vec_PtrEntry(vPartsAll, i);
-            }
-            else
-            {
-                vPartSupp = Vec_IntTwoMerge( vTemp = vPartSupp, vOne );
-                Vec_IntFree( vTemp );
-                vPart = Vec_IntTwoMerge( vTemp = vPart, Vec_PtrEntry(vPartsAll, i) );
-                Vec_IntFree( vTemp );
-                Vec_IntFree( Vec_PtrEntry(vPartsAll, i) );
-            }
-            if ( Vec_IntSize(vPartSupp) < nSuppSizeLimit )
-                continue;
-        }
-        else
-            vPart = Vec_PtrEntry(vPartsAll, i);
-        // add the partition 
-        Vec_PtrWriteEntry( vPartsAll, iPart, vPart );  
-        vPart = NULL;
-        if ( vPartSupp ) 
-        {
-            Vec_IntFree( Vec_PtrEntry(vPartSuppsAll, iPart) );
-            Vec_PtrWriteEntry( vPartSuppsAll, iPart, vPartSupp );  
-            vPartSupp = NULL;
-        }
-        iPart++;
-    }
-    // add the last one
-    if ( vPart )
-    {
-        Vec_PtrWriteEntry( vPartsAll, iPart, vPart );  
-        vPart = NULL;
-
-        assert( vPartSupp != NULL );
-        Vec_IntFree( Vec_PtrEntry(vPartSuppsAll, iPart) );
-        Vec_PtrWriteEntry( vPartSuppsAll, iPart, vPartSupp );  
-        vPartSupp = NULL;
-        iPart++;
-    }
-    Vec_PtrShrink( vPartsAll, iPart );
-    Vec_PtrShrink( vPartsAll, iPart );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Perform the smart partitioning.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManPartitionSmart( Aig_Man_t * p, int nSuppSizeLimit, int fVerbose, Vec_Ptr_t ** pvPartSupps )
-{
-    Vec_Ptr_t * vPartSuppsBit;
-    Vec_Ptr_t * vSupports, * vPartsAll, * vPartsAll2, * vPartSuppsAll;//, * vPartPtr;
-    Vec_Int_t * vOne, * vPart, * vPartSupp, * vTemp;
-    int i, iPart, iOut, clk;
-
-    // compute the supports for all outputs
-clk = clock();
-    vSupports = Aig_ManSupports( p );
-if ( fVerbose )
-{
-PRT( "Supps", clock() - clk );
-}
-    // start char-based support representation
-    vPartSuppsBit = Vec_PtrAlloc( 1000 );
-
-    // create partitions
-clk = clock();
-    vPartsAll = Vec_PtrAlloc( 256 );
-    vPartSuppsAll = Vec_PtrAlloc( 256 );
-    Vec_PtrForEachEntry( vSupports, vOne, i )
-    {
-        // get the output number
-        iOut = Vec_IntPop(vOne);
-        // find closely matching part
-        iPart = Aig_ManPartitionSmartFindPart( vPartSuppsAll, vPartsAll, vPartSuppsBit, nSuppSizeLimit, vOne );
-        if ( iPart == -1 )
-        {
-            // create new partition
-            vPart = Vec_IntAlloc( 32 );
-            Vec_IntPush( vPart, iOut );
-            // create new partition support
-            vPartSupp = Vec_IntDup( vOne );
-            // add this partition and its support
-            Vec_PtrPush( vPartsAll, vPart );
-            Vec_PtrPush( vPartSuppsAll, vPartSupp );
-
-            Vec_PtrPush( vPartSuppsBit, Aig_ManSuppCharStart(vOne, Aig_ManPiNum(p)) );
-        }
-        else
-        {
-            // add output to this partition
-            vPart = Vec_PtrEntry( vPartsAll, iPart );
-            Vec_IntPush( vPart, iOut );
-            // merge supports
-            vPartSupp = Vec_PtrEntry( vPartSuppsAll, iPart );
-            vPartSupp = Vec_IntTwoMerge( vTemp = vPartSupp, vOne );
-            Vec_IntFree( vTemp );
-            // reinsert new support
-            Vec_PtrWriteEntry( vPartSuppsAll, iPart, vPartSupp );
-
-            Aig_ManSuppCharAdd( Vec_PtrEntry(vPartSuppsBit, iPart), vOne, Aig_ManPiNum(p) );
-        }
-    }
-
-    // stop char-based support representation
-    Vec_PtrForEachEntry( vPartSuppsBit, vTemp, i )
-        free( vTemp );
-    Vec_PtrFree( vPartSuppsBit );
-
-//printf( "\n" );
-if ( fVerbose )
-{
-PRT( "Parts", clock() - clk );
-}
-
-clk = clock();
-    // reorder partitions in the decreasing order of support sizes
-    // remember partition number in each partition support
-    Vec_PtrForEachEntry( vPartSuppsAll, vOne, i )
-        Vec_IntPush( vOne, i );
-    // sort the supports in the decreasing order
-    Vec_VecSort( (Vec_Vec_t *)vPartSuppsAll, 1 );
-    // reproduce partitions
-    vPartsAll2 = Vec_PtrAlloc( 256 );
-    Vec_PtrForEachEntry( vPartSuppsAll, vOne, i )
-        Vec_PtrPush( vPartsAll2, Vec_PtrEntry(vPartsAll, Vec_IntPop(vOne)) );
-    Vec_PtrFree( vPartsAll );
-    vPartsAll = vPartsAll2;
-
-    // compact small partitions
-//    Aig_ManPartitionPrint( p, vPartsAll, vPartSuppsAll );
-    Aig_ManPartitionCompact( vPartsAll, vPartSuppsAll, nSuppSizeLimit );
-    if ( fVerbose )
-//    Aig_ManPartitionPrint( p, vPartsAll, vPartSuppsAll );
-    printf( "Created %d partitions.\n", Vec_PtrSize(vPartsAll) );
-
-if ( fVerbose )
-{
-//PRT( "Comps", clock() - clk );
-}
-
-    // cleanup
-    Vec_VecFree( (Vec_Vec_t *)vSupports );
-    if ( pvPartSupps == NULL )
-        Vec_VecFree( (Vec_Vec_t *)vPartSuppsAll );
-    else
-        *pvPartSupps = vPartSuppsAll;
-/*
-    // converts from intergers to nodes
-    Vec_PtrForEachEntry( vPartsAll, vPart, iPart )
-    {
-        vPartPtr = Vec_PtrAlloc( Vec_IntSize(vPart) );
-        Vec_IntForEachEntry( vPart, iOut, i )
-            Vec_PtrPush( vPartPtr, Aig_ManPo(p, iOut) );
-        Vec_IntFree( vPart );
-        Vec_PtrWriteEntry( vPartsAll, iPart, vPartPtr );
-    }
-*/
-    return vPartsAll;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Perform the naive partitioning.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManPartitionNaive( Aig_Man_t * p, int nPartSize )
-{
-    Vec_Ptr_t * vParts;
-    Aig_Obj_t * pObj;
-    int nParts, i;
-    nParts = (Aig_ManPoNum(p) / nPartSize) + ((Aig_ManPoNum(p) % nPartSize) > 0);
-    vParts = (Vec_Ptr_t *)Vec_VecStart( nParts );
-    Aig_ManForEachPo( p, pObj, i )
-        Vec_IntPush( Vec_PtrEntry(vParts, i / nPartSize), i );
-    return vParts;
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Adds internal nodes in the topological order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_ManDupPart_rec( Aig_Man_t * pNew, Aig_Man_t * pOld, Aig_Obj_t * pObj, Vec_Int_t * vSuppMap )
-{
-    assert( !Aig_IsComplement(pObj) );
-    if ( Aig_ObjIsTravIdCurrent(pOld, pObj) )
-        return pObj->pData;
-    Aig_ObjSetTravIdCurrent(pOld, pObj);
-    if ( Aig_ObjIsPi(pObj) )
-    {
-        assert( Vec_IntSize(vSuppMap) == Aig_ManPiNum(pNew) );
-        Vec_IntPush( vSuppMap, (int)pObj->pNext );
-        return pObj->pData = Aig_ObjCreatePi(pNew);
-    }
-    assert( Aig_ObjIsNode(pObj) );
-    Aig_ManDupPart_rec( pNew, pOld, Aig_ObjFanin0(pObj), vSuppMap );
-    Aig_ManDupPart_rec( pNew, pOld, Aig_ObjFanin1(pObj), vSuppMap );
-    return pObj->pData = Aig_And( pNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds internal nodes in the topological order.]
-
-  Description [Returns the array of new outputs.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManDupPart( Aig_Man_t * pNew, Aig_Man_t * pOld, Vec_Int_t * vPart, Vec_Int_t * vSuppMap, int fInverse )
-{
-    Vec_Ptr_t * vOutsTotal;
-    Aig_Obj_t * pObj;
-    int Entry, i;
-    // create the PIs
-    Aig_ManIncrementTravId( pOld );
-    Aig_ManConst1(pOld)->pData = Aig_ManConst1(pNew);
-    Aig_ObjSetTravIdCurrent( pOld, Aig_ManConst1(pOld) );
-    if ( !fInverse )
-    {
-        Vec_IntForEachEntry( vSuppMap, Entry, i )
-        {
-            pObj = Aig_ManPi( pOld, Entry );
-            pObj->pData = Aig_ManPi( pNew, i );
-            Aig_ObjSetTravIdCurrent( pOld, pObj );
-        }
-    }
-    else
-    {
-        Vec_IntForEachEntry( vSuppMap, Entry, i )
-        {
-            pObj = Aig_ManPi( pOld, i );
-            pObj->pData = Aig_ManPi( pNew, Entry );
-            Aig_ObjSetTravIdCurrent( pOld, pObj );
-        }
-        vSuppMap = NULL; // should not be useful
-    }
-    // create the internal nodes
-    vOutsTotal = Vec_PtrAlloc( Vec_IntSize(vPart) );
-    if ( !fInverse )
-    {
-        Vec_IntForEachEntry( vPart, Entry, i )
-        {
-            pObj = Aig_ManPo( pOld, Entry );
-            Aig_ManDupPart_rec( pNew, pOld, Aig_ObjFanin0(pObj), vSuppMap );
-            Vec_PtrPush( vOutsTotal, Aig_ObjChild0Copy(pObj) );
-        }
-    }
-    else
-    {
-        Aig_ManForEachObj( pOld, pObj, i )
-        {
-            if ( Aig_ObjIsPo(pObj) )
-            {
-                Aig_ManDupPart_rec( pNew, pOld, Aig_ObjFanin0(pObj), vSuppMap );
-                Vec_PtrPush( vOutsTotal, Aig_ObjChild0Copy(pObj) );
-            }
-            else if ( Aig_ObjIsNode(pObj) && pObj->nRefs == 0 )
-                Aig_ManDupPart_rec( pNew, pOld, pObj, vSuppMap );
-            
-        }
-    }
-    return vOutsTotal; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Create partitioned miter of the two AIGs.]
-
-  Description [Assumes that each output in the second AIG cannot have 
-  more supp vars than the same output in the first AIG.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManMiterPartitioned( Aig_Man_t * p1, Aig_Man_t * p2, int nPartSize )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pMiter;
-    Vec_Ptr_t * vMiters, * vNodes1, * vNodes2;
-    Vec_Ptr_t * vParts, * vPartSupps;
-    Vec_Int_t * vPart, * vPartSupp;
-    int i, k;
-    // partition the first manager
-    vParts = Aig_ManPartitionSmart( p1, nPartSize, 0, &vPartSupps );
-    // derive miters
-    vMiters = Vec_PtrAlloc( Vec_PtrSize(vParts) );
-    for ( i = 0; i < Vec_PtrSize(vParts); i++ )
-    {
-        // get partitions and their support
-        vPart     = Vec_PtrEntry( vParts, i );
-        vPartSupp = Vec_PtrEntry( vPartSupps, i );
-        // create the new miter
-        pNew = Aig_ManStart( 1000 );
-//        pNew->pName = Extra_UtilStrsav( p1->pName );
-        // create the PIs
-        for ( k = 0; k < Vec_IntSize(vPartSupp); k++ )
-            Aig_ObjCreatePi( pNew );
-        // copy the components
-        vNodes1 = Aig_ManDupPart( pNew, p1, vPart, vPartSupp, 0 );
-        vNodes2 = Aig_ManDupPart( pNew, p2, vPart, vPartSupp, 0 );
-        // create the miter
-        pMiter = Aig_MiterTwo( pNew, vNodes1, vNodes2 );
-        Vec_PtrFree( vNodes1 );
-        Vec_PtrFree( vNodes2 );
-        // create the output
-        Aig_ObjCreatePo( pNew, pMiter );
-        // clean up
-        Aig_ManCleanup( pNew );
-        Vec_PtrPush( vMiters, pNew );
-    }
-    Vec_VecFree( (Vec_Vec_t *)vParts );
-    Vec_VecFree( (Vec_Vec_t *)vPartSupps );
-    return vMiters;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs partitioned choice computation.]
-
-  Description [Assumes that each output in the second AIG cannot have 
-  more supp vars than the same output in the first AIG.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManChoicePartitioned( Vec_Ptr_t * vAigs, int nPartSize )
-{
-    extern int Cmd_CommandExecute( void * pAbc, char * sCommand );
-    extern void * Abc_FrameGetGlobalFrame();
-    extern Aig_Man_t * Fra_FraigChoice( Aig_Man_t * pManAig, int nConfMax );
-
-    Vec_Ptr_t * vOutsTotal, * vOuts;
-    Aig_Man_t * pAigTotal, * pAigPart, * pAig;
-    Vec_Int_t * vPart, * vPartSupp;
-    Vec_Ptr_t * vParts;
-    Aig_Obj_t * pObj;
-    void ** ppData;
-    int i, k, m;
-
-    // partition the first AIG in the array
-    assert( Vec_PtrSize(vAigs) > 1 );
-    pAig = Vec_PtrEntry( vAigs, 0 );
-    vParts = Aig_ManPartitionSmart( pAig, nPartSize, 0, NULL );
-
-    // start the total fraiged AIG
-    pAigTotal = Aig_ManStartFrom( pAig );
-    Aig_ManReprStart( pAigTotal, Vec_PtrSize(vAigs) * Aig_ManObjNumMax(pAig) + 10000 );
-    vOutsTotal = Vec_PtrStart( Aig_ManPoNum(pAig) );
-
-    // set the PI numbers
-    Vec_PtrForEachEntry( vAigs, pAig, i )
-        Aig_ManForEachPi( pAig, pObj, k )
-            pObj->pNext = (Aig_Obj_t *)k;
-
-    Cmd_CommandExecute( Abc_FrameGetGlobalFrame(), "unset progressbar" );
-
-    // create the total fraiged AIG
-    vPartSupp = Vec_IntAlloc( 100 ); // maps part PI num into total PI num
-    Vec_PtrForEachEntry( vParts, vPart, i )
-    {
-        // derive the partition AIG
-        pAigPart = Aig_ManStart( 5000 );
-//        pAigPart->pName = Extra_UtilStrsav( pAigPart->pName );
-        Vec_IntClear( vPartSupp );
-        Vec_PtrForEachEntry( vAigs, pAig, k )
-        {
-            vOuts = Aig_ManDupPart( pAigPart, pAig, vPart, vPartSupp, 0 );
-            if ( k == 0 )
-            {
-                Vec_PtrForEachEntry( vOuts, pObj, m )
-                    Aig_ObjCreatePo( pAigPart, pObj );
-            }
-            Vec_PtrFree( vOuts );
-        }
-        // derive the total AIG from the partitioned AIG
-        vOuts = Aig_ManDupPart( pAigTotal, pAigPart, vPart, vPartSupp, 1 );
-        // add to the outputs
-        Vec_PtrForEachEntry( vOuts, pObj, k )
-        {
-            assert( Vec_PtrEntry( vOutsTotal, Vec_IntEntry(vPart,k) ) == NULL );
-            Vec_PtrWriteEntry( vOutsTotal, Vec_IntEntry(vPart,k), pObj );
-        }
-        Vec_PtrFree( vOuts );
-        // store contents of pData pointers
-        ppData = ALLOC( void *, Aig_ManObjNumMax(pAigPart) );
-        Aig_ManForEachObj( pAigPart, pObj, k )
-            ppData[k] = pObj->pData;
-        // report the process
-        printf( "Part %4d  (out of %4d)  PI = %5d. PO = %5d. And = %6d. Lev = %4d.\r", 
-            i+1, Vec_PtrSize(vParts), Aig_ManPiNum(pAigPart), Aig_ManPoNum(pAigPart), 
-            Aig_ManNodeNum(pAigPart), Aig_ManLevelNum(pAigPart) );
-        // compute equivalence classes (to be stored in pNew->pReprs)
-        pAig = Fra_FraigChoice( pAigPart, 1000 );
-        Aig_ManStop( pAig );
-        // reset the pData pointers
-        Aig_ManForEachObj( pAigPart, pObj, k )
-            pObj->pData = ppData[k];
-        free( ppData );
-        // transfer representatives to the total AIG
-        if ( pAigPart->pReprs )
-            Aig_ManTransferRepr( pAigTotal, pAigPart );
-        Aig_ManStop( pAigPart );
-    }
-    printf( "                                                                                          \r" );
-    Vec_VecFree( (Vec_Vec_t *)vParts );
-    Vec_IntFree( vPartSupp );
-
-    Cmd_CommandExecute( Abc_FrameGetGlobalFrame(), "set progressbar" );
-
-    // clear the PI numbers
-    Vec_PtrForEachEntry( vAigs, pAig, i )
-        Aig_ManForEachPi( pAig, pObj, k )
-            pObj->pNext = NULL;
-/*
-    // collect the missing outputs (outputs whose driver is not a node)
-    pAig = Vec_PtrEntry( vAigs, 0 );
-    Aig_ManConst1(pAig)->pData = Aig_ManConst1(pAigTotal);
-    Aig_ManForEachPi( pAig, pObj, i )
-        pAig->pData = Aig_ManPi( pAigTotal, i );
-    Aig_ManForEachPo( pAig, pObj, i )
-        if ( !Aig_ObjIsNode(Aig_ObjFanin0(pObj)) )
-        {
-            assert( Vec_PtrEntry( vOutsTotal, i ) == NULL );
-            Vec_PtrWriteEntry( vOutsTotal, i, Aig_ObjChild0Copy(pObj) );
-        }
-*/
-    // add the outputs in the same order
-    Vec_PtrForEachEntry( vOutsTotal, pObj, i )
-        Aig_ObjCreatePo( pAigTotal, pObj );
-    Vec_PtrFree( vOutsTotal );
-
-    // derive the result of choicing
-    pAig = Aig_ManRehash( pAigTotal );
-    // create the equivalent nodes lists
-    Aig_ManMarkValidChoices( pAig );
-    return pAig;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigRepr.c b/src/aig/aig/aigRepr.c
deleted file mode 100644
index 6356afd3..00000000
--- a/src/aig/aig/aigRepr.c
+++ /dev/null
@@ -1,457 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigRepr.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Handing node representatives.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigRepr.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the array of representatives.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManReprStart( Aig_Man_t * p, int nIdMax )
-{
-    assert( Aig_ManBufNum(p) == 0 );
-    assert( p->pReprs == NULL );
-    p->nReprsAlloc = nIdMax;
-    p->pReprs = ALLOC( Aig_Obj_t *, p->nReprsAlloc );
-    memset( p->pReprs, 0, sizeof(Aig_Obj_t *) * p->nReprsAlloc );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stop the array of representatives.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManReprStop( Aig_Man_t * p )
-{
-    assert( p->pReprs != NULL );
-    FREE( p->pReprs );
-    p->nReprsAlloc = 0;    
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Set the representative.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjCreateRepr( Aig_Man_t * p, Aig_Obj_t * pNode1, Aig_Obj_t * pNode2 )
-{
-    assert( p->pReprs != NULL );
-    assert( !Aig_IsComplement(pNode1) );
-    assert( !Aig_IsComplement(pNode2) );
-    assert( pNode1->Id < p->nReprsAlloc );
-    assert( pNode2->Id < p->nReprsAlloc );
-    assert( pNode1->Id < pNode2->Id );
-    p->pReprs[pNode2->Id] = pNode1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Set the representative.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Aig_ObjSetRepr( Aig_Man_t * p, Aig_Obj_t * pNode1, Aig_Obj_t * pNode2 )
-{
-    assert( p->pReprs != NULL );
-    assert( !Aig_IsComplement(pNode1) );
-    assert( !Aig_IsComplement(pNode2) );
-    assert( pNode1->Id < p->nReprsAlloc );
-    assert( pNode2->Id < p->nReprsAlloc );
-    if ( pNode1 == pNode2 )
-        return;
-    if ( pNode1->Id < pNode2->Id )
-        p->pReprs[pNode2->Id] = pNode1;
-    else
-        p->pReprs[pNode1->Id] = pNode2;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Find representative.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Aig_Obj_t * Aig_ObjFindRepr( Aig_Man_t * p, Aig_Obj_t * pNode )
-{
-    assert( p->pReprs != NULL );
-    assert( !Aig_IsComplement(pNode) );
-    assert( pNode->Id < p->nReprsAlloc );
-//    assert( !p->pReprs[pNode->Id] || p->pReprs[pNode->Id]->Id < pNode->Id );
-    return p->pReprs[pNode->Id];
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Clears the representative.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Aig_ObjClearRepr( Aig_Man_t * p, Aig_Obj_t * pNode )
-{
-    assert( p->pReprs != NULL );
-    assert( !Aig_IsComplement(pNode) );
-    assert( pNode->Id < p->nReprsAlloc );
-    p->pReprs[pNode->Id] = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Find representative transitively.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Aig_Obj_t * Aig_ObjFindReprTransitive( Aig_Man_t * p, Aig_Obj_t * pNode )
-{
-    Aig_Obj_t * pNext, * pRepr;
-    if ( (pRepr = Aig_ObjFindRepr(p, pNode)) )
-        while ( (pNext = Aig_ObjFindRepr(p, pRepr)) )
-            pRepr = pNext;
-    return pRepr;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns representatives of fanin in approapriate polarity.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Aig_Obj_t * Aig_ObjRepr( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    Aig_Obj_t * pRepr;
-    if ( pRepr = Aig_ObjFindRepr(p, pObj) )
-        return Aig_NotCond( pRepr->pData, pObj->fPhase ^ pRepr->fPhase );
-    return pObj->pData;
-}
-static inline Aig_Obj_t * Aig_ObjChild0Repr( Aig_Man_t * p, Aig_Obj_t * pObj ) { return Aig_NotCond( Aig_ObjRepr(p, Aig_ObjFanin0(pObj)), Aig_ObjFaninC0(pObj) ); }
-static inline Aig_Obj_t * Aig_ObjChild1Repr( Aig_Man_t * p, Aig_Obj_t * pObj ) { return Aig_NotCond( Aig_ObjRepr(p, Aig_ObjFanin1(pObj)), Aig_ObjFaninC1(pObj) ); }
-
-/**Function*************************************************************
-
-  Synopsis    [Duplicates AIG while substituting representatives.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManTransferRepr( Aig_Man_t * pNew, Aig_Man_t * pOld )
-{
-    Aig_Obj_t * pObj, * pRepr;
-    int k;
-    assert( pNew->pReprs != NULL );
-    // extend storage to fix pNew
-    if ( pNew->nReprsAlloc < Aig_ManObjNumMax(pNew) )
-    {
-        int nReprsAllocNew = 2 * Aig_ManObjNumMax(pNew);
-        pNew->pReprs = REALLOC( Aig_Obj_t *, pNew->pReprs, nReprsAllocNew );
-        memset( pNew->pReprs + pNew->nReprsAlloc, 0, sizeof(Aig_Obj_t *) * (nReprsAllocNew-pNew->nReprsAlloc) );
-        pNew->nReprsAlloc = nReprsAllocNew;
-    }
-    // go through the nodes which have representatives
-    Aig_ManForEachObj( pOld, pObj, k )
-        if ( (pRepr = Aig_ObjFindRepr(pOld, pObj)) )
-            Aig_ObjSetRepr( pNew, Aig_Regular(pRepr->pData), Aig_Regular(pObj->pData) ); 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Duplicates the AIG manager recursively.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_ManDupRepr_rec( Aig_Man_t * pNew, Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    Aig_Obj_t * pRepr;
-    if ( pObj->pData )
-        return pObj->pData;
-    if ( (pRepr = Aig_ObjFindRepr(p, pObj)) )
-    {
-        Aig_ManDupRepr_rec( pNew, p, pRepr );
-        return pObj->pData = Aig_NotCond( pRepr->pData, pRepr->fPhase ^ pObj->fPhase );
-    }
-    Aig_ManDupRepr_rec( pNew, p, Aig_ObjFanin0(pObj) );
-    Aig_ManDupRepr_rec( pNew, p, Aig_ObjFanin1(pObj) );
-    return pObj->pData = Aig_And( pNew, Aig_ObjChild0Repr(p, pObj), Aig_ObjChild1Repr(p, pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Duplicates AIG while substituting representatives.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManDupRepr( Aig_Man_t * p, int fOrdered )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pObj;
-    int i;
-    // start the HOP package
-    pNew = Aig_ManStart( Aig_ManObjNumMax(p) );
-    pNew->pName = Aig_UtilStrsav( p->pName );
-    pNew->nRegs = p->nRegs;
-    if ( p->vFlopNums )
-        pNew->vFlopNums = Vec_IntDup( p->vFlopNums );
-    // map the const and primary inputs
-    Aig_ManCleanData( p );
-    Aig_ManConst1(p)->pData = Aig_ManConst1(pNew);
-    Aig_ManForEachPi( p, pObj, i )
-        pObj->pData = Aig_ObjCreatePi(pNew);
-    // map the internal nodes
-    if ( fOrdered )
-    {
-        Aig_ManForEachNode( p, pObj, i )
-            pObj->pData = Aig_And( pNew, Aig_ObjChild0Repr(p, pObj), Aig_ObjChild1Repr(p, pObj) );
-    }
-    else
-    {
-        Aig_ManForEachPo( p, pObj, i )
-            Aig_ManDupRepr_rec( pNew, p, Aig_ObjFanin0(pObj) );
-    }
-    // transfer the POs
-    Aig_ManForEachPo( p, pObj, i )
-        Aig_ObjCreatePo( pNew, Aig_ObjChild0Repr(p, pObj) );
-    // check the new manager
-    if ( !Aig_ManCheck(pNew) )
-        printf( "Aig_ManDupRepr: Check has failed.\n" );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfer representatives and return the number of critical fanouts.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManRemapRepr( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj, * pRepr;
-    int i, nFanouts = 0;
-    Aig_ManForEachNode( p, pObj, i )
-    {
-        pRepr = Aig_ObjFindReprTransitive( p, pObj );
-        if ( pRepr == NULL )
-            continue;
-        assert( pRepr->Id < pObj->Id );
-        Aig_ObjSetRepr( p, pObj, pRepr );
-        nFanouts += (pObj->nRefs > 0);
-    }
-    return nFanouts;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if pOld is in the TFI of pNew.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ObjCheckTfi_rec( Aig_Man_t * p, Aig_Obj_t * pNode, Aig_Obj_t * pOld )
-{
-    // check the trivial cases
-    if ( pNode == NULL )
-        return 0;
-//    if ( pNode->Id < pOld->Id ) // cannot use because of choices of pNode
-//        return 0;
-    if ( pNode == pOld )
-        return 1;
-    // skip the visited node
-    if ( Aig_ObjIsTravIdCurrent( p, pNode ) )
-        return 0;
-    Aig_ObjSetTravIdCurrent( p, pNode );
-    // check the children
-    if ( Aig_ObjCheckTfi_rec( p, Aig_ObjFanin0(pNode), pOld ) )
-        return 1;
-    if ( Aig_ObjCheckTfi_rec( p, Aig_ObjFanin1(pNode), pOld ) )
-        return 1;
-    // check equivalent nodes
-    return Aig_ObjCheckTfi_rec( p, p->pEquivs[pNode->Id], pOld );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if pOld is in the TFI of pNew.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ObjCheckTfi( Aig_Man_t * p, Aig_Obj_t * pNew, Aig_Obj_t * pOld )
-{
-    assert( !Aig_IsComplement(pNew) );
-    assert( !Aig_IsComplement(pOld) );
-    Aig_ManIncrementTravId( p );
-    return Aig_ObjCheckTfi_rec( p, pNew, pOld );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Iteratively rehashes the AIG.]
-
-  Description [The input AIG is assumed to have representatives assigned.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManRehash( Aig_Man_t * p )
-{
-    Aig_Man_t * pTemp;
-    int i, nFanouts;
-    assert( p->pReprs != NULL );
-    for ( i = 0; nFanouts = Aig_ManRemapRepr( p ); i++ )
-    {
-//        printf( "Iter = %3d. Fanouts = %6d. Nodes = %7d.\n", i+1, nFanouts, Aig_ManNodeNum(p) );
-        p = Aig_ManDupRepr( pTemp = p, 1 );
-        Aig_ManReprStart( p, Aig_ManObjNumMax(p) );
-        Aig_ManTransferRepr( p, pTemp );
-        Aig_ManStop( pTemp );
-    }
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Marks the nodes that are Creates choices.]
-
-  Description [The input AIG is assumed to have representatives assigned.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManMarkValidChoices( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj, * pRepr;
-    int i;
-    assert( p->pReprs != NULL );
-    // create equivalent nodes in the manager
-    assert( p->pEquivs == NULL );
-    p->pEquivs = ALLOC( Aig_Obj_t *, Aig_ManObjNumMax(p) );
-    memset( p->pEquivs, 0, sizeof(Aig_Obj_t *) * Aig_ManObjNumMax(p) );
-    // make the choice nodes
-    Aig_ManForEachNode( p, pObj, i )
-    {
-        pRepr = Aig_ObjFindRepr( p, pObj );
-        if ( pRepr == NULL )
-            continue;
-        assert( pObj->nRefs == 0 );
-        // skip constant and PI classes
-        if ( !Aig_ObjIsNode(pRepr) )
-        {
-            Aig_ObjClearRepr( p, pObj );
-            continue;
-        }
-        // skip choices with combinatinal loops
-        if ( Aig_ObjCheckTfi( p, pObj, pRepr ) )
-        {
-            Aig_ObjClearRepr( p, pObj );
-            continue;
-        }
-//printf( "Node %d is represented by node %d.\n", pObj->Id, pRepr->Id );
-        // add choice to the choice node
-        p->pEquivs[pObj->Id] = p->pEquivs[pRepr->Id];
-        p->pEquivs[pRepr->Id] = pObj;
-    }
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigRet.c b/src/aig/aig/aigRet.c
deleted file mode 100644
index 3efe20f0..00000000
--- a/src/aig/aig/aigRet.c
+++ /dev/null
@@ -1,969 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigRet.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Retiming of AIGs.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigRet.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// init values
-typedef enum { 
-    RTM_VAL_NONE,                    // 0: non-existent value
-    RTM_VAL_ZERO,                    // 1: initial value 0
-    RTM_VAL_ONE,                     // 2: initial value 1
-    RTM_VAL_VOID                     // 3: unused value
-} Rtm_Init_t;
-
-typedef struct Rtm_Man_t_    Rtm_Man_t;
-struct Rtm_Man_t_
-{
-    // network representation
-    Vec_Ptr_t *      vObjs;          // retiming objects
-    Vec_Ptr_t *      vPis;           // PIs only
-    Vec_Ptr_t *      vPos;           // POs only
-    Aig_MmFlex_t *   pMem;           // the memory manager
-    // autonomous components after cutting off
-    // storage for overflow latches
-    unsigned *       pExtra;   
-    int              nExtraCur;
-    int              nExtraAlloc;
-};
-
-typedef struct Rtm_Edg_t_    Rtm_Edg_t;
-struct Rtm_Edg_t_
-{
-    unsigned long    nLats   :  12;  // the number of latches
-    unsigned long    LData   :  20;  // the latches themselves
-};
-
-typedef struct Rtm_Obj_t_    Rtm_Obj_t;
-struct Rtm_Obj_t_
-{
-    void *           pCopy;          // the copy of this object
-    unsigned long    Type    :  3;   // object type
-    unsigned long    fMark   :  1;   // multipurpose mark
-    unsigned long    fAuto   :  1;   // this object belongs to an autonomous component
-    unsigned long    fCompl0 :  1;   // complemented attribute of the first edge
-    unsigned long    fCompl1 :  1;   // complemented attribute of the second edge
-    unsigned long    nFanins :  8;   // the number of fanins
-    unsigned         Num     : 17;   // the retiming number of this node
-    int              Id;             // ID of this object
-    int              Temp;           // temporary usage
-    int              nFanouts;       // the number of fanouts
-    void *           pFanio[0];      // fanins and their edges (followed by fanouts and pointers to their edges)
-};
-
-static inline Rtm_Obj_t * Rtm_ObjFanin( Rtm_Obj_t * pObj, int i )        { return (Rtm_Obj_t *)pObj->pFanio[2*i];                     }
-static inline Rtm_Obj_t * Rtm_ObjFanout( Rtm_Obj_t * pObj, int i )       { return (Rtm_Obj_t *)pObj->pFanio[2*(pObj->nFanins+i)];     }
-static inline Rtm_Edg_t * Rtm_ObjEdge( Rtm_Obj_t * pObj, int i )         { return (Rtm_Edg_t *)(pObj->pFanio + 2*i + 1);              }
-static inline Rtm_Edg_t * Rtm_ObjFanoutEdge( Rtm_Obj_t * pObj, int i )   { return (Rtm_Edg_t *)pObj->pFanio[2*(pObj->nFanins+i) + 1]; }
-
-static inline Rtm_Init_t  Rtm_InitNot( Rtm_Init_t Val )                  { if ( Val == RTM_VAL_ZERO ) return RTM_VAL_ONE; if ( Val == RTM_VAL_ONE ) return RTM_VAL_ZERO; assert( 0 ); return -1; }
-static inline Rtm_Init_t  Rtm_InitNotCond( Rtm_Init_t Val, int c )       { return c ? Rtm_InitNot(Val) : Val;                         }
-static inline Rtm_Init_t  Rtm_InitAnd(Rtm_Init_t ValA, Rtm_Init_t ValB ) { if ( ValA == RTM_VAL_ONE && ValB == RTM_VAL_ONE ) return RTM_VAL_ONE;  if ( ValA == RTM_VAL_ZERO || ValB == RTM_VAL_ZERO ) return RTM_VAL_ZERO; assert( 0 ); return -1;   }
-
-static inline int         Rtm_InitWordsNum( int nLats )                  { return (nLats >> 4) + ((nLats & 15) > 0); }
-static inline int         Rtm_InitGetTwo( unsigned * p, int i )          { return (p[i>>4] >> ((i & 15)<<1)) & 3;    }
-static inline void        Rtm_InitSetTwo( unsigned * p, int i, int val ) { p[i>>4] |= (val << ((i & 15)<<1));        }
-static inline void        Rtm_InitXorTwo( unsigned * p, int i, int val ) { p[i>>4] ^= (val << ((i & 15)<<1));        }
-
-static inline Rtm_Init_t  Rtm_ObjGetFirst1( Rtm_Edg_t * pEdge )          { return pEdge->LData & 3;                                    }
-static inline Rtm_Init_t  Rtm_ObjGetLast1( Rtm_Edg_t * pEdge )           { return (pEdge->LData >> ((pEdge->nLats-1)<<1)) & 3;         }
-static inline Rtm_Init_t  Rtm_ObjGetOne1( Rtm_Edg_t * pEdge, int i )     { assert( i < (int)pEdge->nLats ); return (pEdge->LData >> (i << 1)) & 3;  }
-static inline Rtm_Init_t  Rtm_ObjRemFirst1( Rtm_Edg_t * pEdge )          { int Val = pEdge->LData & 3; pEdge->LData >>= 2; assert(pEdge->nLats > 0); pEdge->nLats--; return Val;  }
-static inline Rtm_Init_t  Rtm_ObjRemLast1( Rtm_Edg_t * pEdge )           { int Val = (pEdge->LData >> ((pEdge->nLats-1)<<1)) & 3; pEdge->LData ^= Val << ((pEdge->nLats-1)<<1); assert(pEdge->nLats > 0); pEdge->nLats--; return Val;  }
-static inline void        Rtm_ObjAddFirst1( Rtm_Edg_t * pEdge, Rtm_Init_t Val ) { assert( Val > 0 && Val < 4 ); pEdge->LData = (pEdge->LData << 2) | Val;  pEdge->nLats++;   }
-static inline void        Rtm_ObjAddLast1( Rtm_Edg_t * pEdge, Rtm_Init_t Val )  { assert( Val > 0 && Val < 4 ); pEdge->LData |= Val << (pEdge->nLats<<1);  pEdge->nLats++;   }
-
-static inline Rtm_Init_t  Rtm_ObjGetFirst2( Rtm_Man_t * p, Rtm_Edg_t * pEdge )                 { return Rtm_InitGetTwo( p->pExtra + pEdge->LData, 0 );                }
-static inline Rtm_Init_t  Rtm_ObjGetLast2( Rtm_Man_t * p, Rtm_Edg_t * pEdge )                  { return Rtm_InitGetTwo( p->pExtra + pEdge->LData, pEdge->nLats - 1 ); }
-static inline Rtm_Init_t  Rtm_ObjGetOne2( Rtm_Man_t * p, Rtm_Edg_t * pEdge, int i )            { return Rtm_InitGetTwo( p->pExtra + pEdge->LData, i );                }
-static        Rtm_Init_t  Rtm_ObjRemFirst2( Rtm_Man_t * p, Rtm_Edg_t * pEdge );
-static inline Rtm_Init_t  Rtm_ObjRemLast2( Rtm_Man_t * p, Rtm_Edg_t * pEdge )                  { Rtm_Init_t Val = Rtm_ObjGetLast2( p, pEdge );    Rtm_InitXorTwo( p->pExtra + pEdge->LData, pEdge->nLats - 1, Val ); pEdge->nLats--; return Val; }
-static        void        Rtm_ObjAddFirst2( Rtm_Man_t * p, Rtm_Edg_t * pEdge, Rtm_Init_t Val );
-static inline void        Rtm_ObjAddLast2( Rtm_Man_t * p, Rtm_Edg_t * pEdge, Rtm_Init_t Val )  { Rtm_InitSetTwo( p->pExtra + pEdge->LData, pEdge->nLats, Val );  pEdge->nLats++;  }
-
-static        void        Rtm_ObjTransferToSmall( Rtm_Man_t * p, Rtm_Edg_t * pEdge );
-static        void        Rtm_ObjTransferToBig( Rtm_Man_t * p, Rtm_Edg_t * pEdge ); 
-static        void        Rtm_ObjTransferToBigger( Rtm_Man_t * p, Rtm_Edg_t * pEdge );
-
-static inline Rtm_Init_t  Rtm_ObjGetFirst( Rtm_Man_t * p, Rtm_Edg_t * pEdge )                  { return pEdge->nLats > 10? Rtm_ObjGetFirst2(p, pEdge)  : Rtm_ObjGetFirst1(pEdge);   }
-static inline Rtm_Init_t  Rtm_ObjGetLast( Rtm_Man_t * p, Rtm_Edg_t * pEdge )                   { return pEdge->nLats > 10? Rtm_ObjGetLast2(p, pEdge)   : Rtm_ObjGetLast1(pEdge);    }
-static inline Rtm_Init_t  Rtm_ObjGetOne( Rtm_Man_t * p, Rtm_Edg_t * pEdge, int i )             { return pEdge->nLats > 10? Rtm_ObjGetOne2(p, pEdge, i) : Rtm_ObjGetOne1(pEdge, i);  }
-static        Rtm_Init_t  Rtm_ObjRemFirst( Rtm_Man_t * p, Rtm_Edg_t * pEdge )                  { Rtm_Init_t Res = pEdge->nLats > 10 ? Rtm_ObjRemFirst2(p, pEdge) : Rtm_ObjRemFirst1(pEdge); if ( pEdge->nLats == 10 ) Rtm_ObjTransferToSmall(p, pEdge); return Res; }
-static        Rtm_Init_t  Rtm_ObjRemLast( Rtm_Man_t * p, Rtm_Edg_t * pEdge )                   { Rtm_Init_t Res = pEdge->nLats > 10 ? Rtm_ObjRemLast2(p, pEdge)  : Rtm_ObjRemLast1(pEdge);  if ( pEdge->nLats == 10 ) Rtm_ObjTransferToSmall(p, pEdge); return Res; }
-static        void        Rtm_ObjAddFirst( Rtm_Man_t * p, Rtm_Edg_t * pEdge, Rtm_Init_t Val )  { if ( pEdge->nLats == 10 ) Rtm_ObjTransferToBig(p, pEdge); else if ( (pEdge->nLats & 15) == 15 ) Rtm_ObjTransferToBigger(p, pEdge); if ( pEdge->nLats >= 10 ) Rtm_ObjAddFirst2(p, pEdge, Val); else Rtm_ObjAddFirst1(pEdge, Val); }
-static        void        Rtm_ObjAddLast( Rtm_Man_t * p, Rtm_Edg_t * pEdge, Rtm_Init_t Val )   { if ( pEdge->nLats == 10 ) Rtm_ObjTransferToBig(p, pEdge); else if ( (pEdge->nLats & 15) == 15 ) Rtm_ObjTransferToBigger(p, pEdge); if ( pEdge->nLats >= 10 ) Rtm_ObjAddLast2(p, pEdge, Val);  else Rtm_ObjAddLast1(pEdge, Val);  }
-
-
-// iterator over the primary inputs
-#define Rtm_ManForEachPi( p, pObj, i )                                          \
-    Vec_PtrForEachEntry( p->vPis, pObj, i )
-// iterator over the primary outputs
-#define Rtm_ManForEachPo( p, pObj, i )                                          \
-    Vec_PtrForEachEntry( p->vPos, pObj, i )
-// iterator over all objects, including those currently not used
-#define Rtm_ManForEachObj( p, pObj, i )                                         \
-    Vec_PtrForEachEntry( p->vObjs, pObj, i ) 
-// iterate through the fanins
-#define Rtm_ObjForEachFanin( pObj, pFanin, i )                                  \
-    for ( i = 0; i < (int)(pObj)->nFanins && ((pFanin = Rtm_ObjFanin(pObj, i)), 1); i++ )
-// iterate through the fanouts
-#define Rtm_ObjForEachFanout( pObj, pFanout, i )                                \
-    for ( i = 0; i < (int)(pObj)->nFanouts && ((pFanout = Rtm_ObjFanout(pObj, i)), 1); i++ )
-// iterate through the fanin edges
-#define Rtm_ObjForEachFaninEdge( pObj, pEdge, i )                               \
-    for ( i = 0; i < (int)(pObj)->nFanins && ((pEdge = Rtm_ObjEdge(pObj, i)), 1); i++ )
-// iterate through the fanout edges
-#define Rtm_ObjForEachFanoutEdge( pObj, pEdge, i )                              \
-    for ( i = 0; i < (int)(pObj)->nFanouts && ((pEdge = Rtm_ObjFanoutEdge(pObj, i)), 1); i++ )
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers from big to small storage.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ObjTransferToSmall( Rtm_Man_t * p, Rtm_Edg_t * pEdge ) 
-{
-    assert( pEdge->nLats == 10 );
-    pEdge->LData = p->pExtra[pEdge->LData];
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers from small to big storage.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ObjTransferToBig( Rtm_Man_t * p, Rtm_Edg_t * pEdge ) 
-{
-    assert( pEdge->nLats == 10 );
-    if ( p->nExtraCur + 1 > p->nExtraAlloc )
-    {
-        int nExtraAllocNew = AIG_MAX( 2 * p->nExtraAlloc, 1024 );
-        p->pExtra = REALLOC( unsigned, p->pExtra, nExtraAllocNew );
-        p->nExtraAlloc = nExtraAllocNew;
-    }
-    p->pExtra[p->nExtraCur] = pEdge->LData;
-    pEdge->LData = p->nExtraCur++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers to bigger storage.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ObjTransferToBigger( Rtm_Man_t * p, Rtm_Edg_t * pEdge ) 
-{
-    int nWords;
-    assert( (pEdge->nLats & 15) == 15 );
-    nWords = (pEdge->nLats + 1) >> 4;
-    if ( p->nExtraCur + nWords + 1 > p->nExtraAlloc )
-    {
-        int nExtraAllocNew = AIG_MAX( 2 * p->nExtraAlloc, 1024 );
-        p->pExtra = REALLOC( unsigned, p->pExtra, nExtraAllocNew );
-        p->nExtraAlloc = nExtraAllocNew;
-    }
-    memcpy( p->pExtra + p->nExtraCur, p->pExtra + pEdge->LData, sizeof(unsigned) * nWords );
-    p->pExtra[p->nExtraCur + nWords] = 0;
-    pEdge->LData = p->nExtraCur;
-    p->nExtraCur += nWords + 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Rtm_Init_t  Rtm_ObjRemFirst2( Rtm_Man_t * p, Rtm_Edg_t * pEdge )                 
-{ 
-    Rtm_Init_t Val = 0, Temp;   
-    unsigned * pB = p->pExtra + pEdge->LData, * pE = pB + Rtm_InitWordsNum( pEdge->nLats-- ) - 1;  
-    while ( pE >= pB ) 
-    {
-        Temp = *pE & 3;
-        *pE = (*pE >> 2) | (Val << 30);
-        Val = Temp;
-        pE--;
-    }
-    assert( Val != 0 );
-    return Val;  
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ObjAddFirst2( Rtm_Man_t * p, Rtm_Edg_t * pEdge, Rtm_Init_t Val ) 
-{
-    unsigned * pB = p->pExtra + pEdge->LData, * pE = pB + Rtm_InitWordsNum( ++pEdge->nLats ); 
-    Rtm_Init_t Temp;
-    assert( Val != 0 );
-    while ( pB < pE ) 
-    {
-        Temp = *pB >> 30;
-        *pB = (*pB << 2) | Val;
-        Val = Temp;
-        pB++;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_PrintEdge( Rtm_Man_t * p, Rtm_Edg_t * pEdge ) 
-{
-    unsigned LData = pEdge->LData;
-    printf( "%d : ", pEdge->nLats );
-/*
-    if ( pEdge->nLats > 10 )
-        Extra_PrintBinary( stdout, p->pExtra + pEdge->LData, 2*(pEdge->nLats+1) );
-    else
-        Extra_PrintBinary( stdout, &LData, 2*(pEdge->nLats+1) );
-*/
-    printf( "\n" );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates the retiming manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Rtm_Man_t * Rtm_ManAlloc( Aig_Man_t * p )
-{
-    Rtm_Man_t * pRtm;
-    // start the manager
-    pRtm = ALLOC( Rtm_Man_t, 1 );
-    memset( pRtm, 0, sizeof(Rtm_Man_t) );
-    // perform initializations
-    pRtm->vObjs = Vec_PtrAlloc( Aig_ManObjNum(p) );
-    pRtm->vPis  = Vec_PtrAlloc( Aig_ManPiNum(p) );
-    pRtm->vPos  = Vec_PtrAlloc( Aig_ManPoNum(p) );
-    pRtm->pMem  = Aig_MmFlexStart();
-    return pRtm;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates the retiming manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ManFree( Rtm_Man_t * p )
-{
-    Vec_PtrFree( p->vObjs );
-    Vec_PtrFree( p->vPis );
-    Vec_PtrFree( p->vPos );
-    Aig_MmFlexStop( p->pMem, 0 );
-    FREE( p->pExtra );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the maximum number of latches on an edge.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Rtm_ManLatchMax( Rtm_Man_t * p )
-{
-    Rtm_Obj_t * pObj;
-    Rtm_Edg_t * pEdge;
-    int nLatchMax = 0, i, k;//, c, Val;
-    Rtm_ManForEachObj( p, pObj, i )
-    Rtm_ObjForEachFaninEdge( pObj, pEdge, k )
-    {
-/*
-        for ( c = 0; c < (int)pEdge->nLats; c++ )
-        {
-            Val = Rtm_ObjGetOne( p, pEdge, c );
-            assert( Val == 1 || Val == 2 );
-        }
-*/
-        nLatchMax = AIG_MAX( nLatchMax, (int)pEdge->nLats );
-    }
-    return nLatchMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates the retiming object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Rtm_Obj_t * Rtm_ObjAlloc( Rtm_Man_t * pRtm, int nFanins, int nFanouts )
-{
-    Rtm_Obj_t * pObj;
-    int Size = sizeof(Rtm_Obj_t) + sizeof(Rtm_Obj_t *) * (nFanins + nFanouts) * 2;
-    pObj = (Rtm_Obj_t *)Aig_MmFlexEntryFetch( pRtm->pMem, Size );
-    memset( pObj, 0, sizeof(Rtm_Obj_t) );
-    pObj->Type = (int)(nFanins == 1 && nFanouts == 0); // mark PO
-    pObj->Num  = nFanins;  // temporary
-    pObj->Temp = nFanouts;
-    pObj->Id = Vec_PtrSize(pRtm->vObjs);
-    Vec_PtrPush( pRtm->vObjs, pObj );
-    return pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates the retiming object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ObjAddFanin( Rtm_Obj_t * pObj, Rtm_Obj_t * pFanin, int fCompl )
-{
-    pObj->pFanio[ 2*pObj->nFanins ] = pFanin;
-    pObj->pFanio[ 2*pObj->nFanins + 1 ] = NULL;
-    pFanin->pFanio[ 2*(pFanin->Num + pFanin->nFanouts) ] = pObj;
-    pFanin->pFanio[ 2*(pFanin->Num + pFanin->nFanouts) + 1 ] = pObj->pFanio + 2*pObj->nFanins + 1;
-    if ( pObj->nFanins == 0 )
-        pObj->fCompl0 = fCompl;
-    else if ( pObj->nFanins == 1 )
-        pObj->fCompl1 = fCompl;
-    else
-        assert( 0 );
-    pObj->nFanins++;
-    pFanin->nFanouts++;
-    assert( pObj->nFanins <= pObj->Num );
-    assert( pFanin->nFanouts <= pFanin->Temp );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check the possibility of forward retiming.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Rtm_ObjCheckRetimeFwd( Rtm_Obj_t * pObj )
-{
-    Rtm_Edg_t * pEdge;
-    int i;
-    Rtm_ObjForEachFaninEdge( pObj, pEdge, i )
-        if ( pEdge->nLats == 0 )
-            return 0;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check the possibility of forward retiming.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Rtm_ObjCheckRetimeBwd( Rtm_Obj_t * pObj )
-{
-    Rtm_Edg_t * pEdge;
-    int i;
-    Rtm_ObjForEachFanoutEdge( pObj, pEdge, i )
-        if ( pEdge->nLats == 0 )
-            return 0;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check the possibility of forward retiming.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Rtm_ObjGetDegreeFwd( Rtm_Obj_t * pObj )
-{
-    Rtm_Obj_t * pFanin;
-    int i, Degree = 0;
-    Rtm_ObjForEachFanin( pObj, pFanin, i )
-        Degree = AIG_MAX( Degree, (int)pFanin->Num );
-    return Degree + 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check the possibility of forward retiming.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Rtm_ObjGetDegreeBwd( Rtm_Obj_t * pObj )
-{
-    Rtm_Obj_t * pFanout;
-    int i, Degree = 0;
-    Rtm_ObjForEachFanout( pObj, pFanout, i )
-        Degree = AIG_MAX( Degree, (int)pFanout->Num );
-    return Degree + 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs forward retiming.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ObjRetimeFwd( Rtm_Man_t * pRtm, Rtm_Obj_t * pObj )
-{
-    Rtm_Init_t ValTotal, ValCur;
-    Rtm_Edg_t * pEdge;
-    int i;
-    assert( Rtm_ObjCheckRetimeFwd(pObj) );
-    // extract values and compute the result
-    ValTotal = RTM_VAL_ONE;
-    Rtm_ObjForEachFaninEdge( pObj, pEdge, i )
-    {
-        ValCur = Rtm_ObjRemFirst( pRtm, pEdge );
-        ValCur = Rtm_InitNotCond( ValCur, i? pObj->fCompl1 : pObj->fCompl0 );
-        ValTotal = Rtm_InitAnd( ValTotal, ValCur );
-    }
-    // insert the result in the fanout values
-    Rtm_ObjForEachFanoutEdge( pObj, pEdge, i )
-        Rtm_ObjAddLast( pRtm, pEdge, ValTotal );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs forward retiming.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ObjRetimeBwd( Rtm_Man_t * pRtm, Rtm_Obj_t * pObj )
-{
-    Rtm_Edg_t * pEdge;
-    int i;
-    assert( Rtm_ObjCheckRetimeBwd(pObj) );
-    // extract values and compute the result
-    Rtm_ObjForEachFanoutEdge( pObj, pEdge, i )
-        Rtm_ObjRemLast( pRtm, pEdge );
-    // insert the result in the fanout values
-    Rtm_ObjForEachFaninEdge( pObj, pEdge, i )
-        Rtm_ObjAddFirst( pRtm, pEdge, RTM_VAL_VOID );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ObjMarkAutoFwd_rec( Rtm_Obj_t * pObj )
-{
-    Rtm_Obj_t * pFanout;
-    int i;
-    if ( pObj->fAuto )
-        return;
-    pObj->fAuto = 1;
-    Rtm_ObjForEachFanout( pObj, pFanout, i )
-        Rtm_ObjMarkAutoFwd_rec( pFanout );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Marks the nodes unreachable from the PIs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Rtm_ManMarkAutoFwd( Rtm_Man_t * pRtm )
-{
-    Rtm_Obj_t * pObjRtm;
-    int i, Counter = 0;
-    // mark nodes reachable from the PIs
-    pObjRtm = Vec_PtrEntry( pRtm->vObjs, 0 );
-    Rtm_ObjMarkAutoFwd_rec( pObjRtm );
-    Rtm_ManForEachPi( pRtm, pObjRtm, i )
-        Rtm_ObjMarkAutoFwd_rec( pObjRtm );
-    // count the number of autonomous nodes
-    Rtm_ManForEachObj( pRtm, pObjRtm, i )
-    {
-        pObjRtm->fAuto = !pObjRtm->fAuto;
-        Counter += pObjRtm->fAuto;
-    }
-    // mark the fanins of the autonomous nodes
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rtm_ObjMarkAutoBwd_rec( Rtm_Obj_t * pObj )
-{
-    Rtm_Obj_t * pFanin;
-    int i;
-    if ( pObj->fAuto )
-        return;
-    pObj->fAuto = 1;
-    Rtm_ObjForEachFanin( pObj, pFanin, i )
-        Rtm_ObjMarkAutoBwd_rec( pFanin );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Marks the nodes unreachable from the POs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Rtm_ManMarkAutoBwd( Rtm_Man_t * pRtm )
-{
-    Rtm_Obj_t * pObjRtm;
-    int i, Counter = 0;
-    // mark nodes reachable from the PIs
-    pObjRtm = Vec_PtrEntry( pRtm->vObjs, 0 );
-    pObjRtm->fAuto = 1;
-    Rtm_ManForEachPi( pRtm, pObjRtm, i )
-        pObjRtm->fAuto = 1;
-    Rtm_ManForEachPo( pRtm, pObjRtm, i )
-        Rtm_ObjMarkAutoBwd_rec( pObjRtm );
-    // count the number of autonomous nodes
-    Rtm_ManForEachObj( pRtm, pObjRtm, i )
-    {
-        pObjRtm->fAuto = !pObjRtm->fAuto;
-        Counter += pObjRtm->fAuto;
-    }
-    // mark the fanins of the autonomous nodes
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derive retiming manager from the given AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Rtm_Man_t * Rtm_ManFromAig( Aig_Man_t * p )
-{
-    Rtm_Man_t * pRtm;
-    Aig_Obj_t * pObj, * pObjLi, * pObjLo;
-    int i;
-    assert( Aig_ManRegNum(p) > 0 );
-    assert( Aig_ManBufNum(p) == 0 );
-    // allocate the manager
-    pRtm = Rtm_ManAlloc( p );
-    // allocate objects
-    pObj = Aig_ManConst1(p);
-    pObj->pData = Rtm_ObjAlloc( pRtm, 0, pObj->nRefs );
-    Aig_ManForEachPiSeq( p, pObj, i )
-    {
-        pObj->pData = Rtm_ObjAlloc( pRtm, 0, pObj->nRefs );
-        Vec_PtrPush( pRtm->vPis, pObj->pData );
-    }
-    Aig_ManForEachPoSeq( p, pObj, i )
-    {
-        pObj->pData = Rtm_ObjAlloc( pRtm, 1, 0 );
-        Vec_PtrPush( pRtm->vPos, pObj->pData );
-    }
-    Aig_ManForEachLoSeq( p, pObj, i )
-        pObj->pData = Rtm_ObjAlloc( pRtm, 1, pObj->nRefs );
-    Aig_ManForEachLiSeq( p, pObj, i )
-        pObj->pData = Rtm_ObjAlloc( pRtm, 1, 1 );
-    Aig_ManForEachNode( p, pObj, i )
-        pObj->pData = Rtm_ObjAlloc( pRtm, 2, pObj->nRefs );
-    // connect objects
-    Aig_ManForEachPoSeq( p, pObj, i )
-        Rtm_ObjAddFanin( pObj->pData, Aig_ObjFanin0(pObj)->pData, Aig_ObjFaninC0(pObj) );
-    Aig_ManForEachLiSeq( p, pObj, i )
-        Rtm_ObjAddFanin( pObj->pData, Aig_ObjFanin0(pObj)->pData, Aig_ObjFaninC0(pObj) );
-    Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-        Rtm_ObjAddFanin( pObjLo->pData, pObjLi->pData, 0 );
-    Aig_ManForEachNode( p, pObj, i )
-    {
-        Rtm_ObjAddFanin( pObj->pData, Aig_ObjFanin0(pObj)->pData, Aig_ObjFaninC0(pObj) );
-        Rtm_ObjAddFanin( pObj->pData, Aig_ObjFanin1(pObj)->pData, Aig_ObjFaninC1(pObj) );
-    }
-    return pRtm;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derive AIG manager after retiming.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Rtm_ManToAig_rec( Aig_Man_t * pNew, Rtm_Man_t * pRtm, Rtm_Obj_t * pObjRtm, int * pLatches )
-{
-    Rtm_Edg_t * pEdge;
-    Aig_Obj_t * pRes, * pFanin;
-    int k, Val;
-    if ( pObjRtm->pCopy )
-        return pObjRtm->pCopy;
-    // get the inputs
-    pRes = Aig_ManConst1( pNew );
-    Rtm_ObjForEachFaninEdge( pObjRtm, pEdge, k )
-    {
-        if ( pEdge->nLats == 0 )
-            pFanin = Rtm_ManToAig_rec( pNew, pRtm, Rtm_ObjFanin(pObjRtm, k), pLatches );
-        else
-        {
-            Val = Rtm_ObjGetFirst( pRtm, pEdge );
-            pFanin = Aig_ManPi( pNew, pLatches[2*pObjRtm->Id + k] + pEdge->nLats - 1 );
-            pFanin = Aig_NotCond( pFanin, Val == RTM_VAL_ONE );
-        }
-        pFanin = Aig_NotCond( pFanin, k ? pObjRtm->fCompl1 : pObjRtm->fCompl0 );
-        pRes = Aig_And( pNew, pRes, pFanin );
-    }
-    return pObjRtm->pCopy = pRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derive AIG manager after retiming.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Rtm_ManToAig( Rtm_Man_t * pRtm )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pObjNew;
-    Rtm_Obj_t * pObjRtm;
-    Rtm_Edg_t * pEdge;
-    int i, k, m, Val, nLatches, * pLatches;
-    // count latches and mark the first latch on each edge
-    pLatches = ALLOC( int, 2 * Vec_PtrSize(pRtm->vObjs) );
-    nLatches = 0;
-    Rtm_ManForEachObj( pRtm, pObjRtm, i )
-    Rtm_ObjForEachFaninEdge( pObjRtm, pEdge, k )
-    {
-        pLatches[2*pObjRtm->Id + k] = Vec_PtrSize(pRtm->vPis) + nLatches;
-        nLatches += pEdge->nLats;
-    }
-    // create the new manager
-    pNew = Aig_ManStart( Vec_PtrSize(pRtm->vObjs) + nLatches );
-    // create PIs/POs and latches
-    pObjRtm = Vec_PtrEntry( pRtm->vObjs, 0 );
-    pObjRtm->pCopy = Aig_ManConst1(pNew);
-    Rtm_ManForEachPi( pRtm, pObjRtm, i )
-        pObjRtm->pCopy = Aig_ObjCreatePi(pNew);
-    for ( i = 0; i < nLatches; i++ )
-        Aig_ObjCreatePi(pNew);
-    // create internal nodes
-    Rtm_ManForEachObj( pRtm, pObjRtm, i )
-        Rtm_ManToAig_rec( pNew, pRtm, pObjRtm, pLatches );
-    // create POs
-    Rtm_ManForEachPo( pRtm, pObjRtm, i )
-        Aig_ObjCreatePo( pNew, pObjRtm->pCopy );
-    // connect latches 
-    Rtm_ManForEachObj( pRtm, pObjRtm, i )
-    Rtm_ObjForEachFaninEdge( pObjRtm, pEdge, k )
-    {
-        if ( pEdge->nLats == 0 )
-            continue;
-        pObjNew = Rtm_ObjFanin( pObjRtm, k )->pCopy;
-        for ( m = 0; m < (int)pEdge->nLats; m++ )
-        {
-            Val = Rtm_ObjGetOne( pRtm, pEdge, pEdge->nLats - 1 - m );
-            assert( Val == RTM_VAL_ZERO || Val == RTM_VAL_ONE || Val == RTM_VAL_VOID );
-            pObjNew = Aig_NotCond( pObjNew, Val == RTM_VAL_ONE );
-            Aig_ObjCreatePo( pNew, pObjNew );
-            pObjNew = Aig_ManPi( pNew, pLatches[2*pObjRtm->Id + k] + m );
-            pObjNew = Aig_NotCond( pObjNew, Val == RTM_VAL_ONE );
-        }
-//        assert( Aig_Regular(pObjNew)->nRefs > 0 );
-    }
-    free( pLatches );
-    pNew->nRegs = nLatches;
-    // remove useless nodes
-    Aig_ManCleanup( pNew );
-    if ( !Aig_ManCheck( pNew ) )
-        printf( "Rtm_ManToAig: The network check has failed.\n" );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs forward retiming with the given limit on depth.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Rtm_ManRetime( Aig_Man_t * p, int fForward, int nStepsMax, int fVerbose )
-{
-    Vec_Ptr_t * vQueue;
-    Aig_Man_t * pNew;
-    Rtm_Man_t * pRtm;
-    Rtm_Obj_t * pObj, * pNext;
-    Aig_Obj_t * pObjAig;
-    int i, k, nAutos, Degree, DegreeMax = 0; 
-    int clk;
-
-    // create the retiming manager
-clk = clock();
-    pRtm = Rtm_ManFromAig( p );
-    // set registers
-    Aig_ManForEachLoSeq( p, pObjAig, i )
-        Rtm_ObjAddFirst( pRtm, Rtm_ObjEdge(pObjAig->pData, 0), fForward? RTM_VAL_ZERO : RTM_VAL_VOID );
-    // detect and mark the autonomous components
-    if ( fForward )
-        nAutos = Rtm_ManMarkAutoFwd( pRtm );
-    else
-        nAutos = Rtm_ManMarkAutoBwd( pRtm );
-    if ( fVerbose )
-    {
-        printf( "Detected %d autonomous objects. ", nAutos );
-        PRT( "Time", clock() - clk );
-    }
-
-    // set the current retiming number
-    Rtm_ManForEachObj( pRtm, pObj, i )
-    {
-        assert( pObj->nFanins == pObj->Num );
-        assert( pObj->nFanouts == pObj->Temp );
-        pObj->Num = 0;
-    }
-
-clk = clock();
-    // put the LOs on the queue
-    vQueue = Vec_PtrAlloc( 1000 );
-    if ( fForward )
-    {
-        Aig_ManForEachLoSeq( p, pObjAig, i )
-        {
-            pObj = pObjAig->pData;
-            if ( pObj->fAuto )
-                continue;
-            pObj->fMark = 1;
-            Vec_PtrPush( vQueue, pObj );
-        }
-    }
-    else
-    {
-        Aig_ManForEachLiSeq( p, pObjAig, i )
-        {
-            pObj = pObjAig->pData;
-            if ( pObj->fAuto )
-                continue;
-            pObj->fMark = 1;
-            Vec_PtrPush( vQueue, pObj );
-        }
-    }
-    // perform retiming 
-    DegreeMax = 0;
-    Vec_PtrForEachEntry( vQueue, pObj, i )
-    {
-        pObj->fMark = 0;
-        // retime the node 
-        if ( fForward )
-        {
-            Rtm_ObjRetimeFwd( pRtm, pObj );
-            // check if its fanouts should be retimed
-            Rtm_ObjForEachFanout( pObj, pNext, k )
-            {
-                if ( pNext->fMark ) // skip aleady scheduled
-                    continue;
-                if ( pNext->Type ) // skip POs
-                    continue;
-                if ( !Rtm_ObjCheckRetimeFwd( pNext ) ) // skip non-retimable
-                    continue;
-                Degree = Rtm_ObjGetDegreeFwd( pNext );
-                DegreeMax = AIG_MAX( DegreeMax, Degree );
-                if ( Degree > nStepsMax ) // skip nodes with high degree
-                    continue;
-                pNext->fMark = 1;
-                pNext->Num = Degree;
-                Vec_PtrPush( vQueue, pNext );
-            }
-        }
-        else
-        {
-            Rtm_ObjRetimeBwd( pRtm, pObj );
-            // check if its fanouts should be retimed
-            Rtm_ObjForEachFanin( pObj, pNext, k )
-            {
-                if ( pNext->fMark ) // skip aleady scheduled
-                    continue;
-                if ( pNext->nFanins == 0 ) // skip PIs
-                    continue;
-                if ( !Rtm_ObjCheckRetimeBwd( pNext ) ) // skip non-retimable
-                    continue;
-                Degree = Rtm_ObjGetDegreeBwd( pNext );
-                DegreeMax = AIG_MAX( DegreeMax, Degree );
-                if ( Degree > nStepsMax ) // skip nodes with high degree
-                    continue;
-                pNext->fMark = 1;
-                pNext->Num = Degree;
-                Vec_PtrPush( vQueue, pNext );
-            }
-        }
-    }
-
-    if ( fVerbose )
-    {
-        printf( "Performed %d %s latch moves of max depth %d and max latch count %d.\n", 
-            Vec_PtrSize(vQueue), fForward? "fwd":"bwd", DegreeMax, Rtm_ManLatchMax(pRtm) );
-        printf( "Memory usage = %d.  ", pRtm->nExtraCur );
-        PRT( "Time", clock() - clk );
-    }
-    Vec_PtrFree( vQueue );
-
-    // get the new manager
-    pNew = Rtm_ManToAig( pRtm );
-    pNew->pName = Aig_UtilStrsav( p->pName );
-    Rtm_ManFree( pRtm );
-    // group the registers
-clk = clock();
-    pNew = Aig_ManReduceLaches( pNew, fVerbose );
-    if ( fVerbose )
-    {
-        PRT( "Register sharing time", clock() - clk );
-    }
-    return pNew;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigScl.c b/src/aig/aig/aigScl.c
deleted file mode 100644
index abd424c1..00000000
--- a/src/aig/aig/aigScl.c
+++ /dev/null
@@ -1,399 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigScl.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Sequential cleanup.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigScl.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Remaps the manager.]
-
-  Description [Map in the array specifies for each CI nodes the node that
-  should be used after remapping.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManRemap( Aig_Man_t * p, Vec_Ptr_t * vMap )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pObj, * pObjMapped;
-    int i;
-    // create the new manager
-    pNew = Aig_ManStart( Aig_ManObjNumMax(p) );
-    pNew->pName = Aig_UtilStrsav( p->pName );
-    pNew->nRegs = p->nRegs;
-    pNew->nAsserts = p->nAsserts;
-    if ( p->vFlopNums )
-        pNew->vFlopNums = Vec_IntDup( p->vFlopNums );
-    // create the PIs
-    Aig_ManCleanData( p );
-    Aig_ManConst1(p)->pData = Aig_ManConst1(pNew);
-    Aig_ManForEachPi( p, pObj, i )
-        pObj->pData = Aig_ObjCreatePi(pNew);
-    // implement the mapping
-    Aig_ManForEachPi( p, pObj, i )
-    {
-        pObjMapped = Vec_PtrEntry( vMap, i );
-        pObj->pData = Aig_NotCond( Aig_Regular(pObjMapped)->pData, Aig_IsComplement(pObjMapped) );
-    }
-    // duplicate internal nodes
-    Aig_ManForEachObj( p, pObj, i )
-        if ( Aig_ObjIsBuf(pObj) )
-            pObj->pData = Aig_ObjChild0Copy(pObj);
-        else if ( Aig_ObjIsNode(pObj) )
-            pObj->pData = Aig_And( pNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
-    // add the POs
-    Aig_ManForEachPo( p, pObj, i )
-        Aig_ObjCreatePo( pNew, Aig_ObjChild0Copy(pObj) );
-    assert( Aig_ManNodeNum(p) >= Aig_ManNodeNum(pNew) );
-    // check the resulting network
-    if ( !Aig_ManCheck(pNew) )
-        printf( "Aig_ManDup(): The check has failed.\n" );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of dangling nodes removed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManSeqCleanup_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vNodes )
-{
-    if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-        return;
-    Aig_ObjSetTravIdCurrent(p, pObj);
-    // collect latch input corresponding to unmarked PI (latch output)
-    if ( Aig_ObjIsPi(pObj) )
-    {
-        Vec_PtrPush( vNodes, pObj->pNext );
-        return;
-    }
-    if ( Aig_ObjIsPo(pObj) )
-    {
-        Aig_ManSeqCleanup_rec( p, Aig_ObjFanin0(pObj), vNodes );
-        return;
-    }
-    assert( Aig_ObjIsNode(pObj) );
-    Aig_ManSeqCleanup_rec( p, Aig_ObjFanin0(pObj), vNodes );
-    Aig_ManSeqCleanup_rec( p, Aig_ObjFanin1(pObj), vNodes );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of dangling nodes removed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManSeqCleanup( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vNodes, * vCis, * vCos;
-    Aig_Obj_t * pObj, * pObjLi, * pObjLo;
-    int i, nTruePis, nTruePos;
-    assert( Aig_ManBufNum(p) == 0 );
-
-    // mark the PIs
-    Aig_ManIncrementTravId( p );
-    Aig_ObjSetTravIdCurrent( p, Aig_ManConst1(p) );
-    Aig_ManForEachPiSeq( p, pObj, i )
-        Aig_ObjSetTravIdCurrent( p, pObj );
-
-    // prepare to collect nodes reachable from POs
-    vNodes = Vec_PtrAlloc( 100 );
-    Aig_ManForEachPoSeq( p, pObj, i )
-        Vec_PtrPush( vNodes, pObj );
-
-    // remember latch inputs in latch outputs
-    Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-        pObjLo->pNext = pObjLi;
-    // mark the nodes reachable from these nodes
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Aig_ManSeqCleanup_rec( p, pObj, vNodes );
-    assert( Vec_PtrSize(vNodes) <= Aig_ManPoNum(p) );
-    // clean latch output pointers
-    Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-        pObjLo->pNext = NULL;
-
-    // if some latches are removed, update PIs/POs
-    if ( Vec_PtrSize(vNodes) < Aig_ManPoNum(p) )
-    {
-        if ( p->vFlopNums )
-        {
-            int nTruePos = Aig_ManPoNum(p)-Aig_ManRegNum(p);
-            // remember numbers of flops in the flops
-            Aig_ManForEachLiSeq( p, pObj, i )
-                pObj->pNext = (void *)Vec_IntEntry( p->vFlopNums, i - nTruePos );
-            // reset the flop numbers
-            Vec_PtrForEachEntryStart( vNodes, pObj, i, nTruePos )
-                Vec_IntWriteEntry( p->vFlopNums, i - nTruePos, (int)pObj->pNext );
-            Vec_IntShrink( p->vFlopNums, Vec_PtrSize(vNodes) - nTruePos );
-            // clean the next pointer
-            Aig_ManForEachLiSeq( p, pObj, i )
-                pObj->pNext = NULL;
-        }
-        // collect new CIs/COs
-        vCis = Vec_PtrAlloc( Aig_ManPiNum(p) );
-        Aig_ManForEachPi( p, pObj, i )
-            if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-                Vec_PtrPush( vCis, pObj );
-            else
-            {
-                Vec_PtrWriteEntry( p->vObjs, pObj->Id, NULL );
-//                Aig_ManRecycleMemory( p, pObj );
-            }
-        vCos = Vec_PtrAlloc( Aig_ManPoNum(p) );
-        Aig_ManForEachPo( p, pObj, i )
-            if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-                Vec_PtrPush( vCos, pObj );
-            else
-            {
-                Aig_ObjDisconnect( p, pObj );
-                Vec_PtrWriteEntry( p->vObjs, pObj->Id, NULL );
-//                Aig_ManRecycleMemory( p, pObj );
-            }
-        // remember the number of true PIs/POs
-        nTruePis = Aig_ManPiNum(p) - Aig_ManRegNum(p);
-        nTruePos = Aig_ManPoNum(p) - Aig_ManRegNum(p);
-        // set the new number of registers
-        p->nRegs -= Aig_ManPoNum(p) - Vec_PtrSize(vNodes);
-        // create new PIs/POs
-        assert( Vec_PtrSize(vCis) == nTruePis + p->nRegs );
-        assert( Vec_PtrSize(vCos) == nTruePos + p->nRegs );
-        Vec_PtrFree( p->vPis );    p->vPis = vCis;
-        Vec_PtrFree( p->vPos );    p->vPos = vCos;
-        p->nObjs[AIG_OBJ_PI] = Vec_PtrSize( p->vPis );
-        p->nObjs[AIG_OBJ_PO] = Vec_PtrSize( p->vPos );
-                
-    }
-    Vec_PtrFree( vNodes );
-    // remove dangling nodes
-    return Aig_ManCleanup( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of dangling nodes removed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManCountMergeRegs( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj, * pFanin;
-    int i, Counter = 0, Const0 = 0, Const1 = 0;
-    Aig_ManIncrementTravId( p );
-    Aig_ManForEachLiSeq( p, pObj, i )
-    {
-        pFanin = Aig_ObjFanin0(pObj);
-        if ( Aig_ObjIsConst1(pFanin) )
-        {
-            if ( Aig_ObjFaninC0(pObj) )
-                Const0++;
-            else
-                Const1++;
-        }
-        if ( Aig_ObjIsTravIdCurrent(p, pFanin) )
-            continue;
-        Aig_ObjSetTravIdCurrent(p, pFanin);
-        Counter++;
-    }
-    printf( "Regs = %d. Fanins = %d. Const0 = %d. Const1 = %d.\n", 
-        Aig_ManRegNum(p), Counter, Const0, Const1 );
-    return 0;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Checks how many latches can be reduced.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManReduceLachesCount( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj, * pFanin;
-    int i, Counter = 0, Diffs = 0;
-    assert( Aig_ManRegNum(p) > 0 );
-    Aig_ManForEachObj( p, pObj, i )
-        assert( !pObj->fMarkA && !pObj->fMarkB );
-    Aig_ManForEachLiSeq( p, pObj, i )
-    {
-        pFanin = Aig_ObjFanin0(pObj);
-        if ( Aig_ObjFaninC0(pObj) )
-        {
-            if ( pFanin->fMarkB )
-                Counter++;
-            else
-                pFanin->fMarkB = 1;
-        }
-        else
-        {
-            if ( pFanin->fMarkA )
-                Counter++;
-            else
-                pFanin->fMarkA = 1;
-        }
-    }
-    // count fanins that have both attributes
-    Aig_ManForEachLiSeq( p, pObj, i )
-    {
-        pFanin = Aig_ObjFanin0(pObj);
-        Diffs += pFanin->fMarkA && pFanin->fMarkB;
-        pFanin->fMarkA = pFanin->fMarkB = 0;
-    }
-//    printf( "Diffs = %d.\n", Diffs );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reduces the latches.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManReduceLachesOnce( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vMap;
-    Aig_Obj_t * pObj, * pObjLi, * pObjLo, * pFanin;
-    int * pMapping, i;
-    // start mapping by adding the true PIs
-    vMap = Vec_PtrAlloc( Aig_ManPiNum(p) );
-    Aig_ManForEachPiSeq( p, pObj, i )
-        Vec_PtrPush( vMap, pObj );
-    // create mapping of fanin nodes into the corresponding latch outputs
-    pMapping = ALLOC( int, 2 * Aig_ManObjNumMax(p) );
-    Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-    {
-        pFanin = Aig_ObjFanin0(pObjLi);
-        if ( Aig_ObjFaninC0(pObjLi) )
-        {
-            if ( pFanin->fMarkB )
-            {
-                Vec_PtrPush( vMap, Aig_ManLo(p, pMapping[2*pFanin->Id + 1]) );
-            }
-            else
-            {
-                pFanin->fMarkB = 1;
-                pMapping[2*pFanin->Id + 1] = i;
-                Vec_PtrPush( vMap, pObjLo );
-            }
-        }
-        else
-        {
-            if ( pFanin->fMarkA )
-            {
-                Vec_PtrPush( vMap, Aig_ManLo(p, pMapping[2*pFanin->Id]) );
-            }
-            else
-            {
-                pFanin->fMarkA = 1;
-                pMapping[2*pFanin->Id] = i;
-                Vec_PtrPush( vMap, pObjLo );
-            }
-        }
-    }
-    free( pMapping );
-    Aig_ManForEachLiSeq( p, pObj, i )
-    {
-        pFanin = Aig_ObjFanin0(pObj);
-        pFanin->fMarkA = pFanin->fMarkB = 0;
-    }
-    return vMap;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reduces the latches.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManReduceLaches( Aig_Man_t * p, int fVerbose )
-{
-    Aig_Man_t * pTemp;
-    Vec_Ptr_t * vMap;
-    int nSaved, nCur;
-    for ( nSaved = 0; nCur = Aig_ManReduceLachesCount(p); nSaved += nCur )
-    {
-        if ( fVerbose )
-        {
-        printf( "Saved = %5d.   ", nCur );
-        printf( "RBeg = %5d. NBeg = %6d.   ", Aig_ManRegNum(p), Aig_ManNodeNum(p) );
-        }
-        vMap = Aig_ManReduceLachesOnce( p );
-        p = Aig_ManRemap( pTemp = p, vMap );
-        Aig_ManStop( pTemp );
-        Vec_PtrFree( vMap );
-        Aig_ManSeqCleanup( p );
-        if ( fVerbose )
-        {
-        printf( "REnd = %5d. NEnd = %6d.   ", Aig_ManRegNum(p), Aig_ManNodeNum(p) );
-        printf( "\n" );
-        }
-        if ( p->nRegs == 0 )
-            break;
-    }
-    return p;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigSeq.c b/src/aig/aig/aigSeq.c
deleted file mode 100644
index d296d339..00000000
--- a/src/aig/aig/aigSeq.c
+++ /dev/null
@@ -1,502 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigSeq.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Sequential strashing.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigSeq.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Converts combinational AIG manager into a sequential one.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManSeqStrashConvert( Aig_Man_t * p, int nLatches, int * pInits )
-{
-    Aig_Obj_t * pObjLi, * pObjLo, * pLatch;
-    int i;
-    assert( Vec_PtrSize( p->vBufs ) == 0 );
-    // collect the POs to be converted into latches
-    for ( i = 0; i < nLatches; i++ )
-    {
-        // get the corresponding PI/PO pair
-        pObjLi = Aig_ManPo( p, Aig_ManPoNum(p) - nLatches + i );
-        pObjLo = Aig_ManPi( p, Aig_ManPiNum(p) - nLatches + i );
-        // create latch
-        pLatch = Aig_Latch( p, Aig_ObjChild0(pObjLi), pInits? pInits[i] : 0 );
-        // recycle the old PO object
-        Aig_ObjDisconnect( p, pObjLi );
-        Vec_PtrWriteEntry( p->vObjs, pObjLi->Id, NULL );
-        Aig_ManRecycleMemory( p, pObjLi );
-        // convert the corresponding PI to be a buffer and connect it to the latch
-        pObjLo->Type = AIG_OBJ_BUF;
-        Aig_ObjConnect( p, pObjLo, pLatch, NULL );
-        // save the buffer
-//        Vec_PtrPush( p->vBufs, pObjLo );
-    }
-    // shrink the arrays
-    Vec_PtrShrink( p->vPis, Aig_ManPiNum(p) - nLatches );
-    Vec_PtrShrink( p->vPos, Aig_ManPoNum(p) - nLatches );
-    // update the counters of different objects
-    p->nObjs[AIG_OBJ_PI]  -= nLatches;
-    p->nObjs[AIG_OBJ_PO]  -= nLatches;
-    p->nObjs[AIG_OBJ_BUF] += nLatches;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManDfsSeq_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vNodes )
-{
-    assert( !Aig_IsComplement(pObj) );
-    if ( pObj == NULL )
-        return;
-    if ( Aig_ObjIsTravIdCurrent( p, pObj ) )
-        return;
-    Aig_ObjSetTravIdCurrent( p, pObj );
-    if ( Aig_ObjIsPi(pObj) || Aig_ObjIsConst1(pObj) )
-        return;
-    Aig_ManDfsSeq_rec( p, Aig_ObjFanin0(pObj), vNodes );
-    Aig_ManDfsSeq_rec( p, Aig_ObjFanin1(pObj), vNodes );
-//    if ( (Aig_ObjFanin0(pObj) == NULL || Aig_ObjIsBuf(Aig_ObjFanin0(pObj))) &&
-//         (Aig_ObjFanin1(pObj) == NULL || Aig_ObjIsBuf(Aig_ObjFanin1(pObj))) )
-        Vec_PtrPush( vNodes, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManDfsSeq( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManIncrementTravId( p );
-    vNodes = Vec_PtrAlloc( Aig_ManNodeNum(p) );
-    Aig_ManForEachPo( p, pObj, i )
-        Aig_ManDfsSeq_rec( p, Aig_ObjFanin0(pObj), vNodes );
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManDfsUnreach_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vNodes )
-{
-    assert( !Aig_IsComplement(pObj) );
-    if ( pObj == NULL )
-        return;
-    if ( Aig_ObjIsTravIdPrevious(p, pObj) || Aig_ObjIsTravIdCurrent(p, pObj) )
-        return;
-    Aig_ObjSetTravIdPrevious( p, pObj ); // assume unknown
-    Aig_ManDfsUnreach_rec( p, Aig_ObjFanin0(pObj), vNodes );
-    Aig_ManDfsUnreach_rec( p, Aig_ObjFanin1(pObj), vNodes );
-    if ( Aig_ObjIsTravIdPrevious(p, Aig_ObjFanin0(pObj)) && 
-        (Aig_ObjFanin1(pObj) == NULL || Aig_ObjIsTravIdPrevious(p, Aig_ObjFanin1(pObj))) )
-        Vec_PtrPush( vNodes, pObj );
-    else
-        Aig_ObjSetTravIdCurrent( p, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes unreachable from PIs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManDfsUnreach( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj, * pFanin;
-    int i, k;//, RetValue;
-    // collect unreachable nodes
-    Aig_ManIncrementTravId( p ); 
-    Aig_ManIncrementTravId( p ); 
-    // mark the constant and PIs
-    Aig_ObjSetTravIdPrevious( p, Aig_ManConst1(p) );
-    Aig_ManForEachPi( p, pObj, i )
-        Aig_ObjSetTravIdCurrent( p, pObj );
-    // curr marks visited nodes reachable from PIs
-    // prev marks visited nodes unreachable or unknown
-
-    // collect the unreachable nodes
-    vNodes = Vec_PtrAlloc( 32 );
-    Aig_ManForEachPo( p, pObj, i )
-        Aig_ManDfsUnreach_rec( p, Aig_ObjFanin0(pObj), vNodes );
-
-    // refine resulting nodes
-    do 
-    {
-        k = 0;
-        Vec_PtrForEachEntry( vNodes, pObj, i )
-        {
-            assert( Aig_ObjIsTravIdPrevious(p, pObj) );
-            if ( Aig_ObjIsLatch(pObj) || Aig_ObjIsBuf(pObj) )
-            {
-                pFanin = Aig_ObjFanin0(pObj);
-                assert( Aig_ObjIsTravIdPrevious(p, pFanin) || Aig_ObjIsTravIdCurrent(p, pFanin) );
-                if ( Aig_ObjIsTravIdCurrent(p, pFanin) )
-                {
-                    Aig_ObjSetTravIdCurrent( p, pObj );
-                    continue;
-                }
-            }
-            else // AND gate
-            {
-                assert( Aig_ObjIsNode(pObj) );
-                pFanin = Aig_ObjFanin0(pObj);
-                assert( Aig_ObjIsTravIdPrevious(p, pFanin) || Aig_ObjIsTravIdCurrent(p, pFanin) );
-                if ( Aig_ObjIsTravIdCurrent(p, pFanin) )
-                {
-                    Aig_ObjSetTravIdCurrent( p, pObj );
-                    continue;
-                }
-                pFanin = Aig_ObjFanin1(pObj);
-                assert( Aig_ObjIsTravIdPrevious(p, pFanin) || Aig_ObjIsTravIdCurrent(p, pFanin) );
-                if ( Aig_ObjIsTravIdCurrent(p, pFanin) )
-                {
-                    Aig_ObjSetTravIdCurrent( p, pObj );
-                    continue;
-                }
-            }
-            // write it back
-            Vec_PtrWriteEntry( vNodes, k++, pObj );
-        }
-        Vec_PtrShrink( vNodes, k );
-    } 
-    while ( k < i );
-
-//    if ( Vec_PtrSize(vNodes) > 0 )
-//        printf( "Found %d unreachable.\n", Vec_PtrSize(vNodes) ); 
-    return vNodes;
-
-/*
-    // the resulting array contains all unreachable nodes except const 1
-    if ( Vec_PtrSize(vNodes) == 0 )
-    {
-        Vec_PtrFree( vNodes );
-        return 0;
-    }
-    RetValue = Vec_PtrSize(vNodes);
-
-    // mark these nodes
-    Aig_ManIncrementTravId( p ); 
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Aig_ObjSetTravIdCurrent( p, pObj );
-    Vec_PtrFree( vNodes );
-    return RetValue;
-*/
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Removes nodes that do not fanout into POs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManRemoveUnmarked( Aig_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj;
-    int i, RetValue;
-    // collect unmarked nodes
-    vNodes = Vec_PtrAlloc( 100 );
-    Aig_ManForEachObj( p, pObj, i )
-    {
-        if ( Aig_ObjIsTerm(pObj) )
-            continue;
-        if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-            continue;
-//Aig_ObjPrintVerbose( pObj, 0 );
-        Aig_ObjDisconnect( p, pObj );
-        Vec_PtrPush( vNodes, pObj );
-    }
-    if ( Vec_PtrSize(vNodes) == 0 )
-    {
-        Vec_PtrFree( vNodes );
-        return 0;
-    }
-    // remove the dangling objects
-    RetValue = Vec_PtrSize(vNodes);
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Aig_ObjDelete( p, pObj );
-//    printf( "Removed %d dangling.\n", Vec_PtrSize(vNodes) ); 
-    Vec_PtrFree( vNodes );
-    return RetValue;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Rehashes the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManSeqRehashOne( Aig_Man_t * p, Vec_Ptr_t * vNodes, Vec_Ptr_t * vUnreach )
-{
-    Aig_Obj_t * pObj, * pObjNew, * pFanin0, * pFanin1;
-    int i, RetValue = 0, Counter = 0, Counter2 = 0;
-
-    // mark the unreachable nodes
-    Aig_ManIncrementTravId( p );
-    Vec_PtrForEachEntry( vUnreach, pObj, i )
-        Aig_ObjSetTravIdCurrent(p, pObj);
-/*
-    // count the number of unreachable object connections
-    // that is the number of unreachable objects connected to main objects
-    Aig_ManForEachObj( p, pObj, i )
-    {
-        if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-            continue;
-
-        pFanin0 = Aig_ObjFanin0(pObj);
-        if ( pFanin0 == NULL )
-            continue;
-        if ( Aig_ObjIsTravIdCurrent(p, pFanin0) )
-            pFanin0->fMarkA = 1;
-
-        pFanin1 = Aig_ObjFanin1(pObj);
-        if ( pFanin1 == NULL )
-            continue;
-        if ( Aig_ObjIsTravIdCurrent(p, pFanin1) )
-            pFanin1->fMarkA = 1;
-    }
-
-    // count the objects
-    Aig_ManForEachObj( p, pObj, i )
-        Counter2 += pObj->fMarkA, pObj->fMarkA = 0;
-    printf( "Connections = %d.\n", Counter2 );
-*/
-
-    // go through the nodes while skipping unreachable
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-    {
-        // skip nodes unreachable from the PIs
-        if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-            continue;
-        // process the node
-        if ( Aig_ObjIsPo(pObj) )
-        {
-            if ( !Aig_ObjIsBuf(Aig_ObjFanin0(pObj)) )
-                continue;
-            pFanin0 = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-            Aig_ObjPatchFanin0( p, pObj, pFanin0 );
-            continue;
-        }
-        if ( Aig_ObjIsLatch(pObj) )
-        {
-            if ( !Aig_ObjIsBuf(Aig_ObjFanin0(pObj)) )
-                continue;
-            pObjNew = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-            pObjNew = Aig_Latch( p, pObjNew, 0 );
-            Aig_ObjReplace( p, pObj, pObjNew, 1, 0 );
-            RetValue = 1;
-            Counter++;
-            continue;
-        }
-        if ( Aig_ObjIsNode(pObj) )
-        {
-            if ( !Aig_ObjIsBuf(Aig_ObjFanin0(pObj)) && !Aig_ObjIsBuf(Aig_ObjFanin1(pObj)) )
-                continue;
-            pFanin0 = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-            pFanin1 = Aig_ObjReal_rec( Aig_ObjChild1(pObj) );
-            pObjNew = Aig_And( p, pFanin0, pFanin1 );
-            Aig_ObjReplace( p, pObj, pObjNew, 1, 0 );
-            RetValue = 1;
-            Counter++;
-            continue;
-        }
-    }
-//    printf( "Rehashings = %d.\n", Counter++ );
-    return RetValue;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [If AIG contains buffers, this procedure removes them.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManRemoveBuffers( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj, * pObjNew, * pFanin0, * pFanin1;
-    int i;
-    if ( Aig_ManBufNum(p) == 0 )
-        return;
-    Aig_ManForEachObj( p, pObj, i )
-    {
-        if ( Aig_ObjIsPo(pObj) )
-        {
-            if ( !Aig_ObjIsBuf(Aig_ObjFanin0(pObj)) )
-                continue;
-            pFanin0 = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-            Aig_ObjPatchFanin0( p, pObj, pFanin0 );
-        }
-        else if ( Aig_ObjIsLatch(pObj) )
-        {
-            if ( !Aig_ObjIsBuf(Aig_ObjFanin0(pObj)) )
-                continue;
-            pFanin0 = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-            pObjNew = Aig_Latch( p, pFanin0, 0 );
-            Aig_ObjReplace( p, pObj, pObjNew, 0, 0 );
-        }
-        else if ( Aig_ObjIsAnd(pObj) )
-        {
-            if ( !Aig_ObjIsBuf(Aig_ObjFanin0(pObj)) && !Aig_ObjIsBuf(Aig_ObjFanin1(pObj)) )
-                continue;
-            pFanin0 = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-            pFanin1 = Aig_ObjReal_rec( Aig_ObjChild1(pObj) );
-            pObjNew = Aig_And( p, pFanin0, pFanin1 );
-            Aig_ObjReplace( p, pObj, pObjNew, 0, 0 );
-        }
-    }
-    assert( Aig_ManBufNum(p) == 0 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManSeqStrash( Aig_Man_t * p, int nLatches, int * pInits )
-{
-    Vec_Ptr_t * vNodes, * vUnreach;
-//    Aig_Obj_t * pObj, * pFanin;
-//    int i;
-    int Iter, RetValue = 1;
-
-    // create latches out of the additional PI/PO pairs
-    Aig_ManSeqStrashConvert( p, nLatches, pInits );
-
-    // iteratively rehash the network
-    for ( Iter = 0; RetValue; Iter++ )
-    {
-//        Aig_ManPrintStats( p );
-/*
-        Aig_ManForEachObj( p, pObj, i )
-        {
-            assert( pObj->Type > 0 );
-            pFanin = Aig_ObjFanin0(pObj);
-            assert( pFanin == NULL || pFanin->Type > 0 );
-            pFanin = Aig_ObjFanin1(pObj);
-            assert( pFanin == NULL || pFanin->Type > 0 );
-        }
-*/
-        // mark nodes unreachable from the PIs
-        vUnreach = Aig_ManDfsUnreach( p );
-        if ( Iter == 0 && Vec_PtrSize(vUnreach) > 0 )
-            printf( "Unreachable objects = %d.\n", Vec_PtrSize(vUnreach) );
-        // collect nodes reachable from the POs
-        vNodes = Aig_ManDfsSeq( p );
-        // remove nodes unreachable from the POs
-        if ( Iter == 0 )
-            Aig_ManRemoveUnmarked( p );
-        // continue rehashing as long as there are changes
-        RetValue = Aig_ManSeqRehashOne( p, vNodes, vUnreach );
-        Vec_PtrFree( vNodes );
-        Vec_PtrFree( vUnreach );
-    }
-
-    // perform the final cleanup
-    Aig_ManIncrementTravId( p );
-    vNodes = Aig_ManDfsSeq( p );
-    Aig_ManRemoveUnmarked( p );
-    Vec_PtrFree( vNodes );
-    // remove buffers if they are left
-//    Aig_ManRemoveBuffers( p );
-
-    // clean up
-    if ( !Aig_ManCheck( p ) )
-    {
-        printf( "Aig_ManSeqStrash: The network check has failed.\n" );
-        return 0;
-    }
-    return 1;
-
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigShow.c b/src/aig/aig/aigShow.c
deleted file mode 100644
index 96b0e37f..00000000
--- a/src/aig/aig/aigShow.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyShow.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Visualization of HAIG.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyShow.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the graph structure of AIG for DOT.]
-
-  Description [Useful for graph visualization using tools such as GraphViz: 
-  http://www.graphviz.org/]
-  
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_WriteDotAig( Aig_Man_t * pMan, char * pFileName, int fHaig, Vec_Ptr_t * vBold )
-{
-    FILE * pFile;
-    Aig_Obj_t * pNode;//, * pTemp, * pPrev;
-    int LevelMax, Level, i;
-
-    if ( Aig_ManNodeNum(pMan) > 200 )
-    {
-        fprintf( stdout, "Cannot visualize AIG with more than 200 nodes.\n" );
-        return;
-    }
-    if ( (pFile = fopen( pFileName, "w" )) == NULL )
-    {
-        fprintf( stdout, "Cannot open the intermediate file \"%s\".\n", pFileName );
-        return;
-    }
-
-    // mark the nodes
-    if ( vBold )
-        Vec_PtrForEachEntry( vBold, pNode, i )
-            pNode->fMarkB = 1;
-
-    // compute levels
-//    LevelMax = 1 + Aig_ManSetLevels( pMan, fHaig );
-    LevelMax = 1 + Aig_ManLevels( pMan );
-    Aig_ManForEachPo( pMan, pNode, i )
-        pNode->Level = LevelMax;
-
-    // write the DOT header
-    fprintf( pFile, "# %s\n",  "AIG structure generated by IVY package" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "digraph AIG {\n" );
-    fprintf( pFile, "size = \"7.5,10\";\n" );
-//  fprintf( pFile, "ranksep = 0.5;\n" );
-//  fprintf( pFile, "nodesep = 0.5;\n" );
-    fprintf( pFile, "center = true;\n" );
-//  fprintf( pFile, "orientation = landscape;\n" );
-//  fprintf( pFile, "edge [fontsize = 10];\n" );
-//  fprintf( pFile, "edge [dir = none];\n" );
-    fprintf( pFile, "edge [dir = back];\n" );
-    fprintf( pFile, "\n" );
-
-    // labels on the left of the picture
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  node [shape = plaintext];\n" );
-    fprintf( pFile, "  edge [style = invis];\n" );
-    fprintf( pFile, "  LevelTitle1 [label=\"\"];\n" );
-    fprintf( pFile, "  LevelTitle2 [label=\"\"];\n" );
-    // generate node names with labels
-    for ( Level = LevelMax; Level >= 0; Level-- )
-    {
-        // the visible node name
-        fprintf( pFile, "  Level%d", Level );
-        fprintf( pFile, " [label = " );
-        // label name
-        fprintf( pFile, "\"" );
-        fprintf( pFile, "\"" );
-        fprintf( pFile, "];\n" );
-    }
-
-    // genetate the sequence of visible/invisible nodes to mark levels
-    fprintf( pFile, "  LevelTitle1 ->  LevelTitle2 ->" );
-    for ( Level = LevelMax; Level >= 0; Level-- )
-    {
-        // the visible node name
-        fprintf( pFile, "  Level%d",  Level );
-        // the connector
-        if ( Level != 0 )
-            fprintf( pFile, " ->" );
-        else
-            fprintf( pFile, ";" );
-    }
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate title box on top
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  rank = same;\n" );
-    fprintf( pFile, "  LevelTitle1;\n" );
-    fprintf( pFile, "  title1 [shape=plaintext,\n" );
-    fprintf( pFile, "          fontsize=20,\n" );
-    fprintf( pFile, "          fontname = \"Times-Roman\",\n" );
-    fprintf( pFile, "          label=\"" );
-    fprintf( pFile, "%s", "AIG structure visualized by ABC" );
-    fprintf( pFile, "\\n" );
-    fprintf( pFile, "Benchmark \\\"%s\\\". ", "aig" );
-//    fprintf( pFile, "Time was %s. ",  Extra_TimeStamp() );
-    fprintf( pFile, "\"\n" );
-    fprintf( pFile, "         ];\n" );
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate statistics box
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  rank = same;\n" );
-    fprintf( pFile, "  LevelTitle2;\n" );
-    fprintf( pFile, "  title2 [shape=plaintext,\n" );
-    fprintf( pFile, "          fontsize=18,\n" );
-    fprintf( pFile, "          fontname = \"Times-Roman\",\n" );
-    fprintf( pFile, "          label=\"" );
-    fprintf( pFile, "The set contains %d logic nodes and spans %d levels.", Aig_ManNodeNum(pMan), LevelMax );
-    fprintf( pFile, "\\n" );
-    fprintf( pFile, "\"\n" );
-    fprintf( pFile, "         ];\n" );
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate the COs
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  rank = same;\n" );
-    // the labeling node of this level
-    fprintf( pFile, "  Level%d;\n",  LevelMax );
-    // generate the CO nodes
-    Aig_ManForEachPo( pMan, pNode, i )
-    {
-/*
-        if ( fHaig || pNode->pEquiv == NULL )
-            fprintf( pFile, "  Node%d%s [label = \"%d%s\"", pNode->Id, 
-                (Aig_ObjIsLatch(pNode)? "_in":""), pNode->Id, (Aig_ObjIsLatch(pNode)? "_in":"") );
-        else
-            fprintf( pFile, "  Node%d%s [label = \"%d%s(%d%s)\"", pNode->Id, 
-                (Aig_ObjIsLatch(pNode)? "_in":""), pNode->Id, (Aig_ObjIsLatch(pNode)? "_in":""), 
-                    Aig_Regular(pNode->pEquiv)->Id, Aig_IsComplement(pNode->pEquiv)? "\'":"" );
-*/
-        fprintf( pFile, "  Node%d [label = \"%d\"", pNode->Id, pNode->Id ); 
-
-        fprintf( pFile, ", shape = %s", (Aig_ObjIsLatch(pNode)? "box":"invtriangle") );
-        fprintf( pFile, ", color = coral, fillcolor = coral" );
-        fprintf( pFile, "];\n" );
-    }
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate nodes of each rank
-    for ( Level = LevelMax - 1; Level > 0; Level-- )
-    {
-        fprintf( pFile, "{\n" );
-        fprintf( pFile, "  rank = same;\n" );
-        // the labeling node of this level
-        fprintf( pFile, "  Level%d;\n",  Level );
-        Aig_ManForEachObj( pMan, pNode, i )
-        {
-            if ( (int)pNode->Level != Level )
-                continue;
-/*
-            if ( fHaig || pNode->pEquiv == NULL )
-                fprintf( pFile, "  Node%d [label = \"%d\"", pNode->Id, pNode->Id );
-            else 
-                fprintf( pFile, "  Node%d [label = \"%d(%d%s)\"", pNode->Id, pNode->Id, 
-                    Aig_Regular(pNode->pEquiv)->Id, Aig_IsComplement(pNode->pEquiv)? "\'":"" );
-*/
-            fprintf( pFile, "  Node%d [label = \"%d\"", pNode->Id, pNode->Id ); 
-
-            fprintf( pFile, ", shape = ellipse" );
-            if ( vBold && pNode->fMarkB )
-                fprintf( pFile, ", style = filled" );
-            fprintf( pFile, "];\n" );
-        }
-        fprintf( pFile, "}" );
-        fprintf( pFile, "\n" );
-        fprintf( pFile, "\n" );
-    }
-
-    // generate the CI nodes
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  rank = same;\n" );
-    // the labeling node of this level
-    fprintf( pFile, "  Level%d;\n",  0 );
-    // generate constant node
-    if ( Aig_ObjRefs(Aig_ManConst1(pMan)) > 0 )
-    {
-        pNode = Aig_ManConst1(pMan);
-        // check if the costant node is present
-        fprintf( pFile, "  Node%d [label = \"Const1\"", pNode->Id );
-        fprintf( pFile, ", shape = ellipse" );
-        fprintf( pFile, ", color = coral, fillcolor = coral" );
-        fprintf( pFile, "];\n" );
-    }
-    // generate the CI nodes
-    Aig_ManForEachPi( pMan, pNode, i )
-    {
-/*
-        if ( fHaig || pNode->pEquiv == NULL )
-            fprintf( pFile, "  Node%d%s [label = \"%d%s\"", pNode->Id, 
-                (Aig_ObjIsLatch(pNode)? "_out":""), pNode->Id, (Aig_ObjIsLatch(pNode)? "_out":"") );
-        else
-            fprintf( pFile, "  Node%d%s [label = \"%d%s(%d%s)\"", pNode->Id, 
-                (Aig_ObjIsLatch(pNode)? "_out":""), pNode->Id, (Aig_ObjIsLatch(pNode)? "_out":""), 
-                    Aig_Regular(pNode->pEquiv)->Id, Aig_IsComplement(pNode->pEquiv)? "\'":"" );
-*/
-        fprintf( pFile, "  Node%d [label = \"%d\"", pNode->Id, pNode->Id ); 
-
-        fprintf( pFile, ", shape = %s", (Aig_ObjIsLatch(pNode)? "box":"triangle") );
-        fprintf( pFile, ", color = coral, fillcolor = coral" );
-        fprintf( pFile, "];\n" );
-    }
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate invisible edges from the square down
-    fprintf( pFile, "title1 -> title2 [style = invis];\n" );
-    Aig_ManForEachPo( pMan, pNode, i )
-        fprintf( pFile, "title2 -> Node%d%s [style = invis];\n", pNode->Id, (Aig_ObjIsLatch(pNode)? "_in":"") );
-
-    // generate edges
-    Aig_ManForEachObj( pMan, pNode, i )
-    {
-        if ( !Aig_ObjIsNode(pNode) && !Aig_ObjIsPo(pNode) && !Aig_ObjIsBuf(pNode) )
-            continue;
-        // generate the edge from this node to the next
-        fprintf( pFile, "Node%d%s",  pNode->Id, (Aig_ObjIsLatch(pNode)? "_in":"") );
-        fprintf( pFile, " -> " );
-        fprintf( pFile, "Node%d%s",  Aig_ObjFaninId0(pNode), (Aig_ObjIsLatch(Aig_ObjFanin0(pNode))? "_out":"") );
-        fprintf( pFile, " [" );
-        fprintf( pFile, "style = %s", Aig_ObjFaninC0(pNode)? "dotted" : "bold" );
-//        if ( Aig_NtkIsSeq(pNode->pMan) && Seq_ObjFaninL0(pNode) > 0 )
-//        fprintf( pFile, ", label = \"%s\"", Seq_ObjFaninGetInitPrintable(pNode,0) );
-        fprintf( pFile, "]" );
-        fprintf( pFile, ";\n" );
-        if ( !Aig_ObjIsNode(pNode) )
-            continue;
-        // generate the edge from this node to the next
-        fprintf( pFile, "Node%d",  pNode->Id );
-        fprintf( pFile, " -> " );
-        fprintf( pFile, "Node%d%s",  Aig_ObjFaninId1(pNode), (Aig_ObjIsLatch(Aig_ObjFanin1(pNode))? "_out":"") );
-        fprintf( pFile, " [" );
-        fprintf( pFile, "style = %s", Aig_ObjFaninC1(pNode)? "dotted" : "bold" );
-//        if ( Aig_NtkIsSeq(pNode->pMan) && Seq_ObjFaninL1(pNode) > 0 )
-//        fprintf( pFile, ", label = \"%s\"", Seq_ObjFaninGetInitPrintable(pNode,1) );
-        fprintf( pFile, "]" );
-        fprintf( pFile, ";\n" );
-/*
-        // generate the edges between the equivalent nodes
-        if ( fHaig && pNode->pEquiv && Aig_ObjRefs(pNode) > 0 )
-        {
-            pPrev = pNode;
-            for ( pTemp = pNode->pEquiv; pTemp != pNode; pTemp = Aig_Regular(pTemp->pEquiv) )
-            {
-                fprintf( pFile, "Node%d",  pPrev->Id );
-                fprintf( pFile, " -> " );
-                fprintf( pFile, "Node%d",  pTemp->Id );
-                fprintf( pFile, " [style = %s]", Aig_IsComplement(pTemp->pEquiv)? "dotted" : "bold" );
-                fprintf( pFile, ";\n" );
-                pPrev = pTemp;
-            }
-            // connect the last node with the first
-            fprintf( pFile, "Node%d",  pPrev->Id );
-            fprintf( pFile, " -> " );
-            fprintf( pFile, "Node%d",  pNode->Id );
-            fprintf( pFile, " [style = %s]", Aig_IsComplement(pPrev->pEquiv)? "dotted" : "bold" );
-            fprintf( pFile, ";\n" );
-        }
-*/
-    }
-
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-    fclose( pFile );
-
-    // unmark nodes
-    if ( vBold )
-        Vec_PtrForEachEntry( vBold, pNode, i )
-            pNode->fMarkB = 0;
-
-    Aig_ManForEachPo( pMan, pNode, i )
-        pNode->Level = Aig_ObjFanin0(pNode)->Level;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManShow( Aig_Man_t * pMan, int fHaig, Vec_Ptr_t * vBold )
-{
-    extern void Abc_ShowFile( char * FileNameDot );
-    static Counter = 0;
-    char FileNameDot[200];
-    FILE * pFile;
-    // create the file name
-//    Aig_ShowGetFileName( pMan->pName, FileNameDot );
-    sprintf( FileNameDot, "temp%02d.dot", Counter++ );
-    // check that the file can be opened
-    if ( (pFile = fopen( FileNameDot, "w" )) == NULL )
-    {
-        fprintf( stdout, "Cannot open the intermediate file \"%s\".\n", FileNameDot );
-        return;
-    }
-    fclose( pFile );
-    // generate the file
-    Aig_WriteDotAig( pMan, FileNameDot, fHaig, vBold );
-    // visualize the file 
-    Abc_ShowFile( FileNameDot );
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigTable.c b/src/aig/aig/aigTable.c
deleted file mode 100644
index 94593d70..00000000
--- a/src/aig/aig/aigTable.c
+++ /dev/null
@@ -1,268 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigTable.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Structural hashing table.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigTable.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// hashing the node
-static unsigned long Aig_Hash( Aig_Obj_t * pObj, int TableSize ) 
-{
-    unsigned long Key = Aig_ObjIsExor(pObj) * 1699;
-    Key ^= Aig_ObjFanin0(pObj)->Id * 7937;
-    Key ^= Aig_ObjFanin1(pObj)->Id * 2971;
-    Key ^= Aig_ObjFaninC0(pObj) * 911;
-    Key ^= Aig_ObjFaninC1(pObj) * 353;
-    return Key % TableSize;
-}
-
-// returns the place where this node is stored (or should be stored)
-static Aig_Obj_t ** Aig_TableFind( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    Aig_Obj_t ** ppEntry;
-    if ( Aig_ObjIsLatch(pObj) )
-    {
-        assert( Aig_ObjChild0(pObj) && Aig_ObjChild1(pObj) == NULL );
-    }
-    else
-    {
-        assert( Aig_ObjChild0(pObj) && Aig_ObjChild1(pObj) );
-        assert( Aig_ObjFanin0(pObj)->Id < Aig_ObjFanin1(pObj)->Id );
-    }
-    for ( ppEntry = p->pTable + Aig_Hash(pObj, p->nTableSize); *ppEntry; ppEntry = &(*ppEntry)->pNext )
-        if ( *ppEntry == pObj )
-            return ppEntry;
-    assert( *ppEntry == NULL );
-    return ppEntry;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
- 
-/**Function*************************************************************
-
-  Synopsis    [Resizes the table.]
-
-  Description [Typically this procedure should not be called.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TableResize( Aig_Man_t * p )
-{
-    Aig_Obj_t * pEntry, * pNext;
-    Aig_Obj_t ** pTableOld, ** ppPlace;
-    int nTableSizeOld, Counter, i, clk;
-clk = clock();
-    // save the old table
-    pTableOld = p->pTable;
-    nTableSizeOld = p->nTableSize;
-    // get the new table
-    p->nTableSize = Aig_PrimeCudd( 2 * Aig_ManNodeNum(p) ); 
-    p->pTable = ALLOC( Aig_Obj_t *, p->nTableSize );
-    memset( p->pTable, 0, sizeof(Aig_Obj_t *) * p->nTableSize );
-    // rehash the entries from the old table
-    Counter = 0;
-    for ( i = 0; i < nTableSizeOld; i++ )
-    for ( pEntry = pTableOld[i], pNext = pEntry? pEntry->pNext : NULL; 
-          pEntry; pEntry = pNext, pNext = pEntry? pEntry->pNext : NULL )
-    {
-        // get the place where this entry goes in the table 
-        ppPlace = Aig_TableFind( p, pEntry );
-        assert( *ppPlace == NULL ); // should not be there
-        // add the entry to the list
-        *ppPlace = pEntry;
-        pEntry->pNext = NULL;
-        Counter++;
-    }
-    assert( Counter == Aig_ManNodeNum(p) );
-//    printf( "Increasing the structural table size from %6d to %6d. ", nTableSizeOld, p->nTableSize );
-//    PRT( "Time", clock() - clk );
-    // replace the table and the parameters
-    free( pTableOld );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks if node with the given attributes is in the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_TableLookup( Aig_Man_t * p, Aig_Obj_t * pGhost )
-{
-    Aig_Obj_t * pEntry;
-    assert( !Aig_IsComplement(pGhost) );
-    if ( pGhost->Type == AIG_OBJ_LATCH )
-    {
-        assert( Aig_ObjChild0(pGhost) && Aig_ObjChild1(pGhost) == NULL );
-        if ( !Aig_ObjRefs(Aig_ObjFanin0(pGhost)) )
-            return NULL;
-    }
-    else
-    {
-        assert( pGhost->Type == AIG_OBJ_AND );
-        assert( Aig_ObjChild0(pGhost) && Aig_ObjChild1(pGhost) );
-        assert( Aig_ObjFanin0(pGhost)->Id < Aig_ObjFanin1(pGhost)->Id );
-        if ( !Aig_ObjRefs(Aig_ObjFanin0(pGhost)) || !Aig_ObjRefs(Aig_ObjFanin1(pGhost)) )
-            return NULL;
-    }
-    for ( pEntry = p->pTable[Aig_Hash(pGhost, p->nTableSize)]; pEntry; pEntry = pEntry->pNext )
-    {
-        if ( Aig_ObjChild0(pEntry) == Aig_ObjChild0(pGhost) && 
-             Aig_ObjChild1(pEntry) == Aig_ObjChild1(pGhost) && 
-             Aig_ObjType(pEntry) == Aig_ObjType(pGhost) )
-            return pEntry;
-    }
-    return NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks if node with the given attributes is in the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_TableLookupTwo( Aig_Man_t * p, Aig_Obj_t * pFanin0, Aig_Obj_t * pFanin1 )
-{
-    Aig_Obj_t * pGhost;
-    // consider simple cases
-    if ( pFanin0 == pFanin1 )
-        return pFanin0;
-    if ( pFanin0 == Aig_Not(pFanin1) )
-        return Aig_ManConst0(p);
-    if ( Aig_Regular(pFanin0) == Aig_ManConst1(p) )
-        return pFanin0 == Aig_ManConst1(p) ? pFanin1 : Aig_ManConst0(p);
-    if ( Aig_Regular(pFanin1) == Aig_ManConst1(p) )
-        return pFanin1 == Aig_ManConst1(p) ? pFanin0 : Aig_ManConst0(p);
-    pGhost = Aig_ObjCreateGhost( p, pFanin0, pFanin1, AIG_OBJ_AND );
-    return Aig_TableLookup( p, pGhost );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds the new node to the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TableInsert( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    Aig_Obj_t ** ppPlace;
-    assert( !Aig_IsComplement(pObj) );
-    assert( Aig_TableLookup(p, pObj) == NULL );
-    if ( (pObj->Id & 0xFF) == 0 && 2 * p->nTableSize < Aig_ManNodeNum(p) )
-        Aig_TableResize( p );
-    ppPlace = Aig_TableFind( p, pObj );
-    assert( *ppPlace == NULL );
-    *ppPlace = pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the node from the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TableDelete( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    Aig_Obj_t ** ppPlace;
-    assert( !Aig_IsComplement(pObj) );
-    ppPlace = Aig_TableFind( p, pObj );
-    assert( *ppPlace == pObj ); // node should be in the table
-    // remove the node
-    *ppPlace = pObj->pNext;
-    pObj->pNext = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Count the number of nodes in the table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_TableCountEntries( Aig_Man_t * p )
-{
-    Aig_Obj_t * pEntry;
-    int i, Counter = 0;
-    for ( i = 0; i < p->nTableSize; i++ )
-        for ( pEntry = p->pTable[i]; pEntry; pEntry = pEntry->pNext )
-            Counter++;
-    return Counter;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Profiles the hash table.]
-
-  Description []
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Aig_TableProfile( Aig_Man_t * p )
-{
-    Aig_Obj_t * pEntry;
-    int i, Counter;
-    for ( i = 0; i < p->nTableSize; i++ )
-    {
-        Counter = 0;
-        for ( pEntry = p->pTable[i]; pEntry; pEntry = pEntry->pNext )
-            Counter++;
-        if ( Counter ) 
-            printf( "%d ", Counter );
-    }
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigTime.c b/src/aig/aig/aigTime.c
deleted file mode 100644
index 42f5f575..00000000
--- a/src/aig/aig/aigTime.c
+++ /dev/null
@@ -1,299 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigTime.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Representation of timing information.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigTime.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Aig_TBox_t_           Aig_TBox_t;
-typedef struct Aig_TObj_t_           Aig_TObj_t;
-
-// timing manager
-struct Aig_TMan_t_
-{
-    Vec_Ptr_t *      vBoxes;         // the timing boxes
-    Aig_MmFlex_t *   pMemObj;        // memory manager for boxes
-    int              nTravIds;       // traversal ID of the manager
-    int              nPis;           // the number of PIs
-    int              nPos;           // the number of POs
-    Aig_TObj_t *     pPis;           // timing info for the PIs
-    Aig_TObj_t *     pPos;           // timing info for the POs
-};
-
-// timing box
-struct Aig_TBox_t_
-{
-    int              iBox;           // the unique ID of this box
-    int              TravId;         // traversal ID of this box
-    int              nInputs;        // the number of box inputs 
-    int              nOutputs;       // the number of box outputs
-    int              Inouts[0];      // the int numbers of PIs and POs
-};
-
-// timing object
-struct Aig_TObj_t_
-{
-    int              iObj2Box;       // mapping of the object into its box
-    float            timeOffset;     // the static timing of the node
-    float            timeActual;     // the actual timing of the node
-};
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the network manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_TMan_t * Aig_TManStart( int nPis, int nPos )
-{
-    Aig_TMan_t * p;
-    int i;
-    p = ALLOC( Aig_TMan_t, 1 );
-    memset( p, 0, sizeof(Aig_TMan_t) );
-    p->pMemObj = Aig_MmFlexStart();
-    p->vBoxes  = Vec_PtrAlloc( 100 );
-    Vec_PtrPush( p->vBoxes, NULL );
-    p->nPis = nPis;
-    p->nPos = nPos;
-    p->pPis = ALLOC( Aig_TObj_t, nPis );
-    memset( p->pPis, 0, sizeof(Aig_TObj_t) * nPis );
-    p->pPos = ALLOC( Aig_TObj_t, nPos );
-    memset( p->pPos, 0, sizeof(Aig_TObj_t) * nPos );
-    for ( i = 0; i < nPis; i++ )
-        p->pPis[i].iObj2Box = -1;
-    for ( i = 0; i < nPos; i++ )
-        p->pPos[i].iObj2Box = -1;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the network manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TManStop( Aig_TMan_t * p )
-{
-    Vec_PtrFree( p->vBoxes );
-    Aig_MmFlexStop( p->pMemObj, 0 );
-    free( p->pPis );
-    free( p->pPos );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the new timing box.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TManCreateBox( Aig_TMan_t * p, int * pPis, int nPis, int * pPos, int nPos, float * pPiTimes, float * pPoTimes )
-{
-    Aig_TBox_t * pBox;
-    int i;
-    pBox = (Aig_TBox_t *)Aig_MmFlexEntryFetch( p->pMemObj, sizeof(Aig_TBox_t) + sizeof(int) * (nPis+nPos) );
-    memset( pBox, 0, sizeof(Aig_TBox_t) );
-    pBox->iBox = Vec_PtrSize( p->vBoxes );
-    Vec_PtrPush( p->vBoxes, pBox );
-    pBox->nInputs = nPis;
-    pBox->nOutputs = nPos;
-    for ( i = 0; i < nPis; i++ )
-    {
-        assert( pPis[i] < p->nPis );
-        pBox->Inouts[i] = pPis[i];
-        Aig_TManSetPiArrival( p, pPis[i], pPiTimes[i] );
-        p->pPis[pPis[i]].iObj2Box = pBox->iBox;
-    }
-    for ( i = 0; i < nPos; i++ )
-    {
-        assert( pPos[i] < p->nPos );
-        pBox->Inouts[nPis+i] = pPos[i];
-        Aig_TManSetPoRequired( p, pPos[i], pPoTimes[i] );
-        p->pPos[pPos[i]].iObj2Box = pBox->iBox;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the new timing box.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TManSetPiDelay( Aig_TMan_t * p, int iPi, float Delay )
-{
-    assert( iPi < p->nPis );
-    p->pPis[iPi].timeActual = Delay;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the new timing box.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TManSetPoDelay( Aig_TMan_t * p, int iPo, float Delay )
-{
-    assert( iPo < p->nPos );
-    p->pPos[iPo].timeActual = Delay;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the new timing box.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TManSetPiArrival( Aig_TMan_t * p, int iPi, float Delay )
-{
-    assert( iPi < p->nPis );
-    p->pPis[iPi].timeOffset = Delay;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the new timing box.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TManSetPoRequired( Aig_TMan_t * p, int iPo, float Delay )
-{
-    assert( iPo < p->nPos );
-    p->pPos[iPo].timeOffset = Delay;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Increments the trav ID of the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TManIncrementTravId( Aig_TMan_t * p )
-{
-    p->nTravIds++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns PI arrival time.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-float Aig_TManGetPiArrival( Aig_TMan_t * p, int iPi )
-{
-    Aig_TBox_t * pBox;
-    Aig_TObj_t * pObj;
-    float DelayMax;
-    int i;
-    assert( iPi < p->nPis );
-    if ( p->pPis[iPi].iObj2Box < 0 )
-        return p->pPis[iPi].timeOffset;
-    pBox = Vec_PtrEntry( p->vBoxes, p->pPis[iPi].iObj2Box );
-    // check if box timing is updated
-    if ( pBox->TravId == p->nTravIds )
-        return p->pPis[iPi].timeOffset;
-    pBox->TravId = p->nTravIds;
-    // update box timing
-    DelayMax = -1.0e+20F;
-    for ( i = 0; i < pBox->nOutputs; i++ )
-    {
-        pObj = p->pPos + pBox->Inouts[pBox->nInputs+i];
-        DelayMax = AIG_MAX( DelayMax, pObj->timeActual + pObj->timeOffset );
-    }
-    for ( i = 0; i < pBox->nInputs; i++ )
-    {
-        pObj = p->pPis + pBox->Inouts[i];
-        pObj->timeActual = DelayMax + pObj->timeOffset;
-    }
-    return p->pPis[iPi].timeActual;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns PO required time.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-float Aig_TManGetPoRequired( Aig_TMan_t * p, int iPo )
-{
-    return 0.0;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigTiming.c b/src/aig/aig/aigTiming.c
deleted file mode 100644
index a5da4513..00000000
--- a/src/aig/aig/aigTiming.c
+++ /dev/null
@@ -1,351 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigTiming.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Incremental updating of direct/reverse AIG levels.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigTiming.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the reverse level of the node.]
-
-  Description [The reverse level is the level of the node in reverse
-  topological order, starting from the COs.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Aig_ObjReverseLevel( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    assert( p->vLevelR );
-    Vec_IntFillExtra( p->vLevelR, pObj->Id + 1, 0 );
-    return Vec_IntEntry(p->vLevelR, pObj->Id);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the reverse level of the node.]
-
-  Description [The reverse level is the level of the node in reverse
-  topological order, starting from the COs.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Aig_ObjSetReverseLevel( Aig_Man_t * p, Aig_Obj_t * pObj, int LevelR )
-{
-    assert( p->vLevelR );
-    Vec_IntFillExtra( p->vLevelR, pObj->Id + 1, 0 );
-    Vec_IntWriteEntry( p->vLevelR, pObj->Id, LevelR );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Resets reverse level of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjClearReverseLevel( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    Aig_ObjSetReverseLevel( p, pObj, 0 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns required level of the node.]
-
-  Description [Converts the reverse levels of the node into its required 
-  level as follows: ReqLevel(Node) = MaxLevels(Ntk) + 1 - LevelR(Node).]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ObjRequiredLevel( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    assert( p->vLevelR );
-    return p->nLevelMax + 1 - Aig_ObjReverseLevel(p, pObj);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the reverse level of the node using its fanout levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ObjReverseLevelNew( Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    Aig_Obj_t * pFanout;
-    int i, iFanout, LevelCur, Level = 0;
-    Aig_ObjForEachFanout( p, pObj, pFanout, iFanout, i )
-    {
-        LevelCur = Aig_ObjReverseLevel( p, pFanout );
-        Level = AIG_MAX( Level, LevelCur );
-    }
-    return Level + 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prepares for the computation of required levels.]
-
-  Description [This procedure should be called before the required times
-  are used. It starts internal data structures, which records the level 
-  from the COs of the network nodes in reverse topologogical order.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManStartReverseLevels( Aig_Man_t * p, int nMaxLevelIncrease )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj;
-    int i;
-    assert( p->pFanData != NULL );
-    assert( p->vLevelR == NULL );
-    // remember the maximum number of direct levels
-    p->nLevelMax = Aig_ManLevels(p) + nMaxLevelIncrease;
-    // start the reverse levels
-    p->vLevelR = Vec_IntAlloc( 0 );
-    Vec_IntFill( p->vLevelR, Aig_ManObjNumMax(p), 0 );
-    // compute levels in reverse topological order
-    vNodes = Aig_ManDfsReverse( p );
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-    {
-        assert( pObj->fMarkA == 0 );
-        Aig_ObjSetReverseLevel( p, pObj, Aig_ObjReverseLevelNew(p, pObj) );
-    }
-    Vec_PtrFree( vNodes );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Cleans the data structures used to compute required levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManStopReverseLevels( Aig_Man_t * p )
-{
-    assert( p->vLevelR != NULL );
-    Vec_IntFree( p->vLevelR );
-    p->vLevelR = NULL;
-    p->nLevelMax = 0;
-
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Incrementally updates level of the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManUpdateLevel( Aig_Man_t * p, Aig_Obj_t * pObjNew )
-{
-    Aig_Obj_t * pFanout, * pTemp;
-    int iFanout, LevelOld, Lev, k, m;
-    assert( p->pFanData != NULL );
-    assert( Aig_ObjIsNode(pObjNew) );
-    // allocate level if needed
-    if ( p->vLevels == NULL )
-        p->vLevels = Vec_VecAlloc( Aig_ManLevels(p) + 8 );
-    // check if level has changed
-    LevelOld = Aig_ObjLevel(pObjNew);
-    if ( LevelOld == Aig_ObjLevelNew(pObjNew) )
-        return;
-    // start the data structure for level update
-    // we cannot fail to visit a node when using this structure because the 
-    // nodes are stored by their _old_ levels, which are assumed to be correct
-    Vec_VecClear( p->vLevels );
-    Vec_VecPush( p->vLevels, LevelOld, pObjNew );
-    pObjNew->fMarkA = 1;
-    // recursively update level
-    Vec_VecForEachEntryStart( p->vLevels, pTemp, Lev, k, LevelOld )
-    {
-        pTemp->fMarkA = 0;
-        assert( Aig_ObjLevel(pTemp) == Lev );
-        pTemp->Level = Aig_ObjLevelNew(pTemp);
-        // if the level did not change, no need to check the fanout levels
-        if ( Aig_ObjLevel(pTemp) == Lev )
-            continue;
-        // schedule fanout for level update
-        Aig_ObjForEachFanout( p, pTemp, pFanout, iFanout, m )
-        {
-            if ( Aig_ObjIsNode(pFanout) && !pFanout->fMarkA )
-            {
-                assert( Aig_ObjLevel(pFanout) >= Lev );
-                Vec_VecPush( p->vLevels, Aig_ObjLevel(pFanout), pFanout );
-                pFanout->fMarkA = 1;
-            }
-        }
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Incrementally updates level of the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManUpdateReverseLevel( Aig_Man_t * p, Aig_Obj_t * pObjNew )
-{
-    Aig_Obj_t * pFanin, * pTemp;
-    int LevelOld, LevFanin, Lev, k;
-    assert( p->vLevelR != NULL );
-    assert( Aig_ObjIsNode(pObjNew) );
-    // allocate level if needed
-    if ( p->vLevels == NULL )
-        p->vLevels = Vec_VecAlloc( Aig_ManLevels(p) + 8 );
-    // check if level has changed
-    LevelOld = Aig_ObjReverseLevel(p, pObjNew);
-    if ( LevelOld == Aig_ObjReverseLevelNew(p, pObjNew) )
-        return;
-    // start the data structure for level update
-    // we cannot fail to visit a node when using this structure because the 
-    // nodes are stored by their _old_ levels, which are assumed to be correct
-    Vec_VecClear( p->vLevels );
-    Vec_VecPush( p->vLevels, LevelOld, pObjNew );
-    pObjNew->fMarkA = 1;
-    // recursively update level
-    Vec_VecForEachEntryStart( p->vLevels, pTemp, Lev, k, LevelOld )
-    {
-        pTemp->fMarkA = 0;
-        LevelOld = Aig_ObjReverseLevel(p, pTemp); 
-        assert( LevelOld == Lev );
-        Aig_ObjSetReverseLevel( p, pTemp, Aig_ObjReverseLevelNew(p, pTemp) );
-        // if the level did not change, to need to check the fanout levels
-        if ( Aig_ObjReverseLevel(p, pTemp) == Lev )
-            continue;
-        // schedule fanins for level update
-        pFanin = Aig_ObjFanin0(pTemp);
-        if ( Aig_ObjIsNode(pFanin) && !pFanin->fMarkA )
-        {
-            LevFanin = Aig_ObjReverseLevel( p, pFanin );
-            assert( LevFanin >= Lev );
-            Vec_VecPush( p->vLevels, LevFanin, pFanin );
-            pFanin->fMarkA = 1;
-        }
-        pFanin = Aig_ObjFanin1(pTemp);
-        if ( Aig_ObjIsNode(pFanin) && !pFanin->fMarkA )
-        {
-            LevFanin = Aig_ObjReverseLevel( p, pFanin );
-            assert( LevFanin >= Lev );
-            Vec_VecPush( p->vLevels, LevFanin, pFanin );
-            pFanin->fMarkA = 1;
-        }
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Verifies direct level of the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManVerifyLevel( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i, Counter = 0;
-    assert( p->pFanData );
-    Aig_ManForEachNode( p, pObj, i )
-        if ( Aig_ObjLevel(pObj) != Aig_ObjLevelNew(pObj) )
-        {
-            printf( "Level of node %6d should be %4d instead of %4d.\n", 
-                pObj->Id, Aig_ObjLevelNew(pObj), Aig_ObjLevel(pObj) );
-            Counter++;
-        }
-    if ( Counter )
-    printf( "Levels of %d nodes are incorrect.\n", Counter );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Verifies reverse level of the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManVerifyReverseLevel( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i, Counter = 0;
-    assert( p->vLevelR );
-    Aig_ManForEachNode( p, pObj, i )
-        if ( Aig_ObjLevel(pObj) != Aig_ObjLevelNew(pObj) )
-        {
-            printf( "Reverse level of node %6d should be %4d instead of %4d.\n", 
-                pObj->Id, Aig_ObjReverseLevelNew(p, pObj), Aig_ObjReverseLevel(p, pObj) );
-            Counter++;
-        }
-    if ( Counter )
-    printf( "Reverse levels of %d nodes are incorrect.\n", Counter );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigTruth.c b/src/aig/aig/aigTruth.c
deleted file mode 100644
index a92f9e1d..00000000
--- a/src/aig/aig/aigTruth.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigTruth.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Computes truth table for the cut.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigTruth.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Aig_ManCutTruthOne( Aig_Obj_t * pNode, unsigned * pTruth, int nWords )
-{
-    unsigned * pTruth0, * pTruth1;
-    int i;
-    pTruth0 = Aig_ObjFanin0(pNode)->pData;
-    pTruth1 = Aig_ObjFanin1(pNode)->pData;
-    if ( Aig_ObjIsExor(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = pTruth0[i] ^ pTruth1[i];
-    else if ( !Aig_ObjFaninC0(pNode) && !Aig_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = pTruth0[i] & pTruth1[i];
-    else if ( !Aig_ObjFaninC0(pNode) && Aig_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = pTruth0[i] & ~pTruth1[i];
-    else if ( Aig_ObjFaninC0(pNode) && !Aig_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ~pTruth0[i] & pTruth1[i];
-    else // if ( Aig_ObjFaninC0(pNode) && Aig_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ~pTruth0[i] & ~pTruth1[i];
-    return pTruth;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description [The returned pointer should be used immediately.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Aig_ManCutTruth( Aig_Obj_t * pRoot, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vNodes, Vec_Ptr_t * vTruthElem, Vec_Ptr_t * vTruthStore )
-{
-    Aig_Obj_t * pObj;
-    int i, nWords;
-    assert( Vec_PtrSize(vLeaves) <= Vec_PtrSize(vTruthElem) );
-    assert( Vec_PtrSize(vNodes) <= Vec_PtrSize(vTruthStore) );
-    assert( Vec_PtrSize(vNodes) == 0 || pRoot == Vec_PtrEntryLast(vNodes) );  
-    // assign elementary truth tables
-    Vec_PtrForEachEntry( vLeaves, pObj, i )
-        pObj->pData = Vec_PtrEntry( vTruthElem, i );
-    // compute truths for other nodes
-    nWords = Aig_TruthWordNum( Vec_PtrSize(vLeaves) );
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        pObj->pData = Aig_ManCutTruthOne( pObj, Vec_PtrEntry(vTruthStore, i), nWords );
-    return pRoot->pData;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigTsim.c b/src/aig/aig/aigTsim.c
deleted file mode 100644
index e5b96879..00000000
--- a/src/aig/aig/aigTsim.c
+++ /dev/null
@@ -1,436 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigTsim.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Ternary simulation.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigTsim.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-#define TSI_MAX_ROUNDS    1000
-
-#define AIG_XVS0   1
-#define AIG_XVS1   2
-#define AIG_XVSX   3
-
-static inline void Aig_ObjSetXsim( Aig_Obj_t * pObj, int Value )  { pObj->nCuts = Value;  }
-static inline int  Aig_ObjGetXsim( Aig_Obj_t * pObj )             { return pObj->nCuts;   }
-static inline int  Aig_XsimInv( int Value )   
-{ 
-    if ( Value == AIG_XVS0 )
-        return AIG_XVS1;
-    if ( Value == AIG_XVS1 )
-        return AIG_XVS0;
-    assert( Value == AIG_XVSX );       
-    return AIG_XVSX;
-}
-static inline int  Aig_XsimAnd( int Value0, int Value1 )   
-{ 
-    if ( Value0 == AIG_XVS0 || Value1 == AIG_XVS0 )
-        return AIG_XVS0;
-    if ( Value0 == AIG_XVSX || Value1 == AIG_XVSX )
-        return AIG_XVSX;
-    assert( Value0 == AIG_XVS1 && Value1 == AIG_XVS1 );
-    return AIG_XVS1;
-}
-static inline int  Aig_XsimRand2()   
-{
-    return (rand() & 1) ? AIG_XVS1 : AIG_XVS0;
-}
-static inline int  Aig_XsimRand3()   
-{
-    int RetValue;
-    do { 
-        RetValue = rand() & 3; 
-    } while ( RetValue == 0 );
-    return RetValue;
-}
-static inline int  Aig_ObjGetXsimFanin0( Aig_Obj_t * pObj )       
-{ 
-    int RetValue;
-    RetValue = Aig_ObjGetXsim(Aig_ObjFanin0(pObj));
-    return Aig_ObjFaninC0(pObj)? Aig_XsimInv(RetValue) : RetValue;
-}
-static inline int  Aig_ObjGetXsimFanin1( Aig_Obj_t * pObj )       
-{ 
-    int RetValue;
-    RetValue = Aig_ObjGetXsim(Aig_ObjFanin1(pObj));
-    return Aig_ObjFaninC1(pObj)? Aig_XsimInv(RetValue) : RetValue;
-}
-static inline void Aig_XsimPrint( FILE * pFile, int Value )   
-{ 
-    if ( Value == AIG_XVS0 )
-    {
-        fprintf( pFile, "0" );
-        return;
-    }
-    if ( Value == AIG_XVS1 )
-    {
-        fprintf( pFile, "1" );
-        return;
-    }
-    assert( Value == AIG_XVSX );       
-    fprintf( pFile, "x" );
-}
-
-// simulation manager
-typedef struct Aig_Tsi_t_ Aig_Tsi_t;
-struct Aig_Tsi_t_
-{
-    Aig_Man_t *      pAig;              // the original AIG manager
-    // ternary state representation
-    int              nWords;            // the number of words in the states
-    Vec_Ptr_t *      vStates;           // the collection of ternary states
-    Aig_MmFixed_t *  pMem;              // memory for ternary states
-    // hash table for terminary states
-    unsigned **      pBins;
-    int              nBins;
-};
-
-static inline unsigned * Aig_TsiNext( unsigned * pState, int nWords )                      { return *((unsigned **)(pState + nWords));  }
-static inline void       Aig_TsiSetNext( unsigned * pState, int nWords, unsigned * pNext ) { *((unsigned **)(pState + nWords)) = pNext; }
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates simulation manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Tsi_t * Aig_TsiStart( Aig_Man_t * pAig )
-{
-    Aig_Tsi_t * p;
-    p = (Aig_Tsi_t *)malloc( sizeof(Aig_Tsi_t) );
-    memset( p, 0, sizeof(Aig_Tsi_t) );
-    p->pAig    = pAig;
-    p->nWords  = Aig_BitWordNum( 2*Aig_ManRegNum(pAig) );
-    p->vStates = Vec_PtrAlloc( 1000 );
-    p->pMem    = Aig_MmFixedStart( sizeof(unsigned) * p->nWords + sizeof(unsigned *), 10000 );
-    p->nBins   = Aig_PrimeCudd(TSI_MAX_ROUNDS/2);
-    p->pBins   = ALLOC( unsigned *, p->nBins );
-    memset( p->pBins, 0, sizeof(unsigned *) * p->nBins );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deallocates simulation manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TsiStop( Aig_Tsi_t * p )
-{
-    Aig_MmFixedStop( p->pMem, 0 );
-    Vec_PtrFree( p->vStates );
-    free( p->pBins );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes hash value of the node using its simulation info.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_TsiStateHash( unsigned * pState, int nWords, int nTableSize )
-{
-    static int s_FPrimes[128] = { 
-        1009, 1049, 1093, 1151, 1201, 1249, 1297, 1361, 1427, 1459, 
-        1499, 1559, 1607, 1657, 1709, 1759, 1823, 1877, 1933, 1997, 
-        2039, 2089, 2141, 2213, 2269, 2311, 2371, 2411, 2467, 2543, 
-        2609, 2663, 2699, 2741, 2797, 2851, 2909, 2969, 3037, 3089, 
-        3169, 3221, 3299, 3331, 3389, 3461, 3517, 3557, 3613, 3671, 
-        3719, 3779, 3847, 3907, 3943, 4013, 4073, 4129, 4201, 4243, 
-        4289, 4363, 4441, 4493, 4549, 4621, 4663, 4729, 4793, 4871, 
-        4933, 4973, 5021, 5087, 5153, 5227, 5281, 5351, 5417, 5471, 
-        5519, 5573, 5651, 5693, 5749, 5821, 5861, 5923, 6011, 6073, 
-        6131, 6199, 6257, 6301, 6353, 6397, 6481, 6563, 6619, 6689, 
-        6737, 6803, 6863, 6917, 6977, 7027, 7109, 7187, 7237, 7309, 
-        7393, 7477, 7523, 7561, 7607, 7681, 7727, 7817, 7877, 7933, 
-        8011, 8039, 8059, 8081, 8093, 8111, 8123, 8147
-    };
-    unsigned uHash;
-    int i;
-    uHash = 0;
-    for ( i = 0; i < nWords; i++ )
-        uHash ^= pState[i] * s_FPrimes[i & 0x7F];
-    return uHash % nTableSize;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts value into the table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_TsiStateLookup( Aig_Tsi_t * p, unsigned * pState, int nWords )
-{
-    unsigned * pEntry;
-    int Hash;
-    Hash = Aig_TsiStateHash( pState, nWords, p->nBins );
-    for ( pEntry = p->pBins[Hash]; pEntry; pEntry = Aig_TsiNext(pEntry, nWords) )
-        if ( !memcmp( pEntry, pState, sizeof(unsigned) * nWords ) )
-            return 1;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts value into the table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TsiStateInsert( Aig_Tsi_t * p, unsigned * pState, int nWords )
-{
-    int Hash = Aig_TsiStateHash( pState, nWords, p->nBins );
-    assert( !Aig_TsiStateLookup( p, pState, nWords ) );
-    Aig_TsiSetNext( pState, nWords, p->pBins[Hash] );
-    p->pBins[Hash] = pState;    
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts value into the table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Aig_TsiStateNew( Aig_Tsi_t * p )
-{
-    unsigned * pState;
-    pState = (unsigned *)Aig_MmFixedEntryFetch( p->pMem );
-    memset( pState, 0, sizeof(unsigned) * p->nWords );
-    Vec_PtrPush( p->vStates, pState );
-    return pState;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts value into the table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_TsiStatePrint( Aig_Tsi_t * p, unsigned * pState )
-{
-    int i, Value, nZeros = 0, nOnes = 0, nDcs = 0;
-    for ( i = 0; i < Aig_ManRegNum(p->pAig); i++ )
-    {
-        Value = (Aig_InfoHasBit( pState, 2 * i + 1 ) << 1) | Aig_InfoHasBit( pState, 2 * i );
-        if ( Value == 1 )
-            printf( "0" ), nZeros++;
-        else if ( Value == 2 )
-            printf( "1" ), nOnes++;
-        else if ( Value == 3 )
-            printf( "x" ), nDcs++;
-        else
-            assert( 0 );
-    }
-    printf( " (0=%5d, 1=%5d, x=%5d)\n", nZeros, nOnes, nDcs );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Cycles the circuit to create a new initial state.]
-
-  Description [Simulates the circuit with random input for the given 
-  number of timeframes to get a better initial state.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManTernarySimulate( Aig_Man_t * p, int fVerbose )
-{
-    Aig_Tsi_t * pTsi;
-    Vec_Ptr_t * vMap;
-    Aig_Obj_t * pObj, * pObjLi, * pObjLo;
-    unsigned * pState, * pPrev;
-    int i, k, f, fConstants, Value, nCounter;
-    // allocate the simulation manager
-    pTsi = Aig_TsiStart( p );
-    // initialize the values
-    Aig_ObjSetXsim( Aig_ManConst1(p), AIG_XVS1 );
-    Aig_ManForEachPiSeq( p, pObj, i )
-        Aig_ObjSetXsim( pObj, AIG_XVSX );
-    Aig_ManForEachLoSeq( p, pObj, i )
-        Aig_ObjSetXsim( pObj, AIG_XVS0 );
-    // simulate for the given number of timeframes
-    for ( f = 0; f < TSI_MAX_ROUNDS; f++ )
-    {
-        // collect this state
-        pState = Aig_TsiStateNew( pTsi );
-        Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-        {
-            Value = Aig_ObjGetXsim(pObjLo);
-            if ( Value & 1 )
-                Aig_InfoSetBit( pState, 2 * i );
-            if ( Value & 2 )
-                Aig_InfoSetBit( pState, 2 * i + 1 );
-        }
-//        Aig_TsiStatePrint( pTsi, pState );
-        // check if this state exists
-        if ( Aig_TsiStateLookup( pTsi, pState, pTsi->nWords ) )
-            break;
-        // insert this state
-        Aig_TsiStateInsert( pTsi, pState, pTsi->nWords );
-        // simulate internal nodes
-        Aig_ManForEachNode( p, pObj, i )
-            Aig_ObjSetXsim( pObj, Aig_XsimAnd(Aig_ObjGetXsimFanin0(pObj), Aig_ObjGetXsimFanin1(pObj)) );
-        // transfer the latch values
-        Aig_ManForEachLiSeq( p, pObj, i )
-            Aig_ObjSetXsim( pObj, Aig_ObjGetXsimFanin0(pObj) );
-        Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-            Aig_ObjSetXsim( pObjLo, Aig_ObjGetXsim(pObjLi) );
-    }
-    if ( f == TSI_MAX_ROUNDS )
-    {
-        printf( "Aig_ManTernarySimulate(): Did not reach a fixed point after %d iterations (not a bug).\n", TSI_MAX_ROUNDS );
-        Aig_TsiStop( pTsi );
-        return NULL;
-    }
-    // OR all the states
-    pState = Vec_PtrEntry( pTsi->vStates, 0 );
-    Vec_PtrForEachEntry( pTsi->vStates, pPrev, i )
-    {
-        for ( k = 0; k < pTsi->nWords; k++ )
-            pState[k] |= pPrev[k];
-    }
-    // check if there are constants
-    fConstants = 0;
-    if ( 2*Aig_ManRegNum(p) == 32*pTsi->nWords )
-    {
-        for ( i = 0; i < pTsi->nWords; i++ )
-            if ( pState[i] != ~0 )
-                fConstants = 1;
-    }
-    else
-    {
-        for ( i = 0; i < pTsi->nWords - 1; i++ )
-            if ( pState[i] != ~0 )
-                fConstants = 1;
-        if ( pState[i] != Aig_InfoMask( 2*Aig_ManRegNum(p) - 32*(pTsi->nWords-1) ) )
-            fConstants = 1;
-    }
-    if ( fConstants == 0 )
-    {
-        Aig_TsiStop( pTsi );
-        return NULL;
-    }
-
-    // start mapping by adding the true PIs
-    vMap = Vec_PtrAlloc( Aig_ManPiNum(p) );
-    Aig_ManForEachPiSeq( p, pObj, i )
-        Vec_PtrPush( vMap, pObj );
-    // find constant registers
-    nCounter = 0;
-    Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-    {
-        Value = (Aig_InfoHasBit( pState, 2 * i + 1 ) << 1) | Aig_InfoHasBit( pState, 2 * i );
-        nCounter += (Value == 1 || Value == 2);
-        if ( Value == 1 )
-            Vec_PtrPush( vMap, Aig_ManConst0(p) );
-        else if ( Value == 2 )
-            Vec_PtrPush( vMap, Aig_ManConst1(p) );
-        else if ( Value == 3 )
-            Vec_PtrPush( vMap, pObjLo );
-        else
-            assert( 0 );
-//        Aig_XsimPrint( stdout, Value );
-    }
-//    printf( "\n" );
-    Aig_TsiStop( pTsi );
-    if ( fVerbose )
-    printf( "Detected %d constants after %d iterations of ternary simulation.\n", nCounter, f );
-    return vMap;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reduces the circuit using ternary simulation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Aig_ManConstReduce( Aig_Man_t * p, int fVerbose )
-{
-    Aig_Man_t * pTemp;
-    Vec_Ptr_t * vMap;
-    while ( vMap = Aig_ManTernarySimulate( p, fVerbose ) )
-    {
-        if ( fVerbose )
-        printf( "RBeg = %5d. NBeg = %6d.   ", Aig_ManRegNum(p), Aig_ManNodeNum(p) );
-        p = Aig_ManRemap( pTemp = p, vMap );
-        Aig_ManStop( pTemp );
-        Vec_PtrFree( vMap );
-        Aig_ManSeqCleanup( p );
-        if ( fVerbose )
-        printf( "REnd = %5d. NEnd = %6d.  \n", Aig_ManRegNum(p), Aig_ManNodeNum(p) );
-    }
-    return p;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigUtil.c b/src/aig/aig/aigUtil.c
deleted file mode 100644
index 2fba3cb1..00000000
--- a/src/aig/aig/aigUtil.c
+++ /dev/null
@@ -1,846 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigUtil.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Various procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigUtil.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function********************************************************************
-
-  Synopsis    [Returns the next prime >= p.]
-
-  Description [Copied from CUDD, for stand-aloneness.]
-
-  SideEffects [None]
-
-  SeeAlso     []
-
-******************************************************************************/
-unsigned int Aig_PrimeCudd( unsigned int p )
-{
-    int i,pn;
-
-    p--;
-    do {
-        p++;
-        if (p&1) {
-        pn = 1;
-        i = 3;
-        while ((unsigned) (i * i) <= p) {
-        if (p % i == 0) {
-            pn = 0;
-            break;
-        }
-        i += 2;
-        }
-    } else {
-        pn = 0;
-    }
-    } while (!pn);
-    return(p);
-
-} /* end of Cudd_Prime */
-
-/**Function*************************************************************
-
-  Synopsis    [Increments the current traversal ID of the network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManIncrementTravId( Aig_Man_t * p )
-{
-    if ( p->nTravIds >= (1<<30)-1 )
-        Aig_ManCleanData( p );
-    p->nTravIds++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collect the latches.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManLevels( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i, LevelMax = 0;
-    Aig_ManForEachPo( p, pObj, i )
-        LevelMax = AIG_MAX( LevelMax, (int)Aig_ObjFanin0(pObj)->Level );
-    return LevelMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reset reference counters.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManResetRefs( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManForEachObj( p, pObj, i )
-        pObj->nRefs = 0;
-    Aig_ManForEachObj( p, pObj, i )
-    {
-        if ( Aig_ObjFanin0(pObj) )
-            Aig_ObjFanin0(pObj)->nRefs++;
-        if ( Aig_ObjFanin1(pObj) )
-            Aig_ObjFanin1(pObj)->nRefs++;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Cleans MarkB.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManCleanMarkA( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManForEachObj( p, pObj, i )
-        pObj->fMarkA = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Cleans MarkB.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManCleanMarkB( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManForEachObj( p, pObj, i )
-        pObj->fMarkB = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Cleans the data pointers for the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManCleanData( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManForEachObj( p, pObj, i )
-        pObj->pData = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recursively cleans the data pointers in the cone of the node.]
-
-  Description [Applicable to small AIGs only because no caching is performed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjCleanData_rec( Aig_Obj_t * pObj )
-{
-    assert( !Aig_IsComplement(pObj) );
-    assert( !Aig_ObjIsPo(pObj) );
-    if ( Aig_ObjIsAnd(pObj) )
-    {
-        Aig_ObjCleanData_rec( Aig_ObjFanin0(pObj) );
-        Aig_ObjCleanData_rec( Aig_ObjFanin1(pObj) );
-    }
-    pObj->pData = NULL;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Detects multi-input gate rooted at this node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjCollectMulti_rec( Aig_Obj_t * pRoot, Aig_Obj_t * pObj, Vec_Ptr_t * vSuper )
-{
-    if ( pRoot != pObj && (Aig_IsComplement(pObj) || Aig_ObjIsPi(pObj) || Aig_ObjType(pRoot) != Aig_ObjType(pObj)) )
-    {
-        Vec_PtrPushUnique(vSuper, pObj);
-        return;
-    }
-    Aig_ObjCollectMulti_rec( pRoot, Aig_ObjChild0(pObj), vSuper );
-    Aig_ObjCollectMulti_rec( pRoot, Aig_ObjChild1(pObj), vSuper );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Detects multi-input gate rooted at this node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjCollectMulti( Aig_Obj_t * pRoot, Vec_Ptr_t * vSuper )
-{
-    assert( !Aig_IsComplement(pRoot) );
-    Vec_PtrClear( vSuper );
-    Aig_ObjCollectMulti_rec( pRoot, pRoot, vSuper );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the node is the root of MUX or EXOR/NEXOR.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ObjIsMuxType( Aig_Obj_t * pNode )
-{
-    Aig_Obj_t * pNode0, * pNode1;
-    // check that the node is regular
-    assert( !Aig_IsComplement(pNode) );
-    // if the node is not AND, this is not MUX
-    if ( !Aig_ObjIsAnd(pNode) )
-        return 0;
-    // if the children are not complemented, this is not MUX
-    if ( !Aig_ObjFaninC0(pNode) || !Aig_ObjFaninC1(pNode) )
-        return 0;
-    // get children
-    pNode0 = Aig_ObjFanin0(pNode);
-    pNode1 = Aig_ObjFanin1(pNode);
-    // if the children are not ANDs, this is not MUX
-    if ( !Aig_ObjIsAnd(pNode0) || !Aig_ObjIsAnd(pNode1) )
-        return 0;
-    // otherwise the node is MUX iff it has a pair of equal grandchildren
-    return (Aig_ObjFanin0(pNode0) == Aig_ObjFanin0(pNode1) && (Aig_ObjFaninC0(pNode0) ^ Aig_ObjFaninC0(pNode1))) || 
-           (Aig_ObjFanin0(pNode0) == Aig_ObjFanin1(pNode1) && (Aig_ObjFaninC0(pNode0) ^ Aig_ObjFaninC1(pNode1))) ||
-           (Aig_ObjFanin1(pNode0) == Aig_ObjFanin0(pNode1) && (Aig_ObjFaninC1(pNode0) ^ Aig_ObjFaninC0(pNode1))) ||
-           (Aig_ObjFanin1(pNode0) == Aig_ObjFanin1(pNode1) && (Aig_ObjFaninC1(pNode0) ^ Aig_ObjFaninC1(pNode1)));
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Recognizes what nodes are inputs of the EXOR.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ObjRecognizeExor( Aig_Obj_t * pObj, Aig_Obj_t ** ppFan0, Aig_Obj_t ** ppFan1 )
-{
-    Aig_Obj_t * p0, * p1;
-    assert( !Aig_IsComplement(pObj) );
-    if ( !Aig_ObjIsNode(pObj) )
-        return 0;
-    if ( Aig_ObjIsExor(pObj) )
-    {
-        *ppFan0 = Aig_ObjChild0(pObj);
-        *ppFan1 = Aig_ObjChild1(pObj);
-        return 1;
-    }
-    assert( Aig_ObjIsAnd(pObj) );
-    p0 = Aig_ObjChild0(pObj);
-    p1 = Aig_ObjChild1(pObj);
-    if ( !Aig_IsComplement(p0) || !Aig_IsComplement(p1) )
-        return 0;
-    p0 = Aig_Regular(p0);
-    p1 = Aig_Regular(p1);
-    if ( !Aig_ObjIsAnd(p0) || !Aig_ObjIsAnd(p1) )
-        return 0;
-    if ( Aig_ObjFanin0(p0) != Aig_ObjFanin0(p1) || Aig_ObjFanin1(p0) != Aig_ObjFanin1(p1) )
-        return 0;
-    if ( Aig_ObjFaninC0(p0) == Aig_ObjFaninC0(p1) || Aig_ObjFaninC1(p0) == Aig_ObjFaninC1(p1) )
-        return 0;
-    *ppFan0 = Aig_ObjChild0(p0);
-    *ppFan1 = Aig_ObjChild1(p0);
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recognizes what nodes are control and data inputs of a MUX.]
-
-  Description [If the node is a MUX, returns the control variable C.
-  Assigns nodes T and E to be the then and else variables of the MUX. 
-  Node C is never complemented. Nodes T and E can be complemented.
-  This function also recognizes EXOR/NEXOR gates as MUXes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_ObjRecognizeMux( Aig_Obj_t * pNode, Aig_Obj_t ** ppNodeT, Aig_Obj_t ** ppNodeE )
-{
-    Aig_Obj_t * pNode0, * pNode1;
-    assert( !Aig_IsComplement(pNode) );
-    assert( Aig_ObjIsMuxType(pNode) );
-    // get children
-    pNode0 = Aig_ObjFanin0(pNode);
-    pNode1 = Aig_ObjFanin1(pNode);
-
-    // find the control variable
-    if ( Aig_ObjFanin1(pNode0) == Aig_ObjFanin1(pNode1) && (Aig_ObjFaninC1(pNode0) ^ Aig_ObjFaninC1(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p2) )
-        if ( Aig_ObjFaninC1(pNode0) )
-        { // pNode2->p2 is positive phase of C
-            *ppNodeT = Aig_Not(Aig_ObjChild0(pNode1));//pNode2->p1);
-            *ppNodeE = Aig_Not(Aig_ObjChild0(pNode0));//pNode1->p1);
-            return Aig_ObjChild1(pNode1);//pNode2->p2;
-        }
-        else
-        { // pNode1->p2 is positive phase of C
-            *ppNodeT = Aig_Not(Aig_ObjChild0(pNode0));//pNode1->p1);
-            *ppNodeE = Aig_Not(Aig_ObjChild0(pNode1));//pNode2->p1);
-            return Aig_ObjChild1(pNode0);//pNode1->p2;
-        }
-    }
-    else if ( Aig_ObjFanin0(pNode0) == Aig_ObjFanin0(pNode1) && (Aig_ObjFaninC0(pNode0) ^ Aig_ObjFaninC0(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p1) )
-        if ( Aig_ObjFaninC0(pNode0) )
-        { // pNode2->p1 is positive phase of C
-            *ppNodeT = Aig_Not(Aig_ObjChild1(pNode1));//pNode2->p2);
-            *ppNodeE = Aig_Not(Aig_ObjChild1(pNode0));//pNode1->p2);
-            return Aig_ObjChild0(pNode1);//pNode2->p1;
-        }
-        else
-        { // pNode1->p1 is positive phase of C
-            *ppNodeT = Aig_Not(Aig_ObjChild1(pNode0));//pNode1->p2);
-            *ppNodeE = Aig_Not(Aig_ObjChild1(pNode1));//pNode2->p2);
-            return Aig_ObjChild0(pNode0);//pNode1->p1;
-        }
-    }
-    else if ( Aig_ObjFanin0(pNode0) == Aig_ObjFanin1(pNode1) && (Aig_ObjFaninC0(pNode0) ^ Aig_ObjFaninC1(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p1) )
-        if ( Aig_ObjFaninC0(pNode0) )
-        { // pNode2->p2 is positive phase of C
-            *ppNodeT = Aig_Not(Aig_ObjChild0(pNode1));//pNode2->p1);
-            *ppNodeE = Aig_Not(Aig_ObjChild1(pNode0));//pNode1->p2);
-            return Aig_ObjChild1(pNode1);//pNode2->p2;
-        }
-        else
-        { // pNode1->p1 is positive phase of C
-            *ppNodeT = Aig_Not(Aig_ObjChild1(pNode0));//pNode1->p2);
-            *ppNodeE = Aig_Not(Aig_ObjChild0(pNode1));//pNode2->p1);
-            return Aig_ObjChild0(pNode0);//pNode1->p1;
-        }
-    }
-    else if ( Aig_ObjFanin1(pNode0) == Aig_ObjFanin0(pNode1) && (Aig_ObjFaninC1(pNode0) ^ Aig_ObjFaninC0(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p2) )
-        if ( Aig_ObjFaninC1(pNode0) )
-        { // pNode2->p1 is positive phase of C
-            *ppNodeT = Aig_Not(Aig_ObjChild1(pNode1));//pNode2->p2);
-            *ppNodeE = Aig_Not(Aig_ObjChild0(pNode0));//pNode1->p1);
-            return Aig_ObjChild0(pNode1);//pNode2->p1;
-        }
-        else
-        { // pNode1->p2 is positive phase of C
-            *ppNodeT = Aig_Not(Aig_ObjChild0(pNode0));//pNode1->p1);
-            *ppNodeE = Aig_Not(Aig_ObjChild1(pNode1));//pNode2->p2);
-            return Aig_ObjChild1(pNode0);//pNode1->p2;
-        }
-    }
-    assert( 0 ); // this is not MUX
-    return NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Aig_ObjReal_rec( Aig_Obj_t * pObj )
-{
-    Aig_Obj_t * pObjNew, * pObjR = Aig_Regular(pObj);
-    if ( !Aig_ObjIsBuf(pObjR) )
-        return pObj;
-    pObjNew = Aig_ObjReal_rec( Aig_ObjChild0(pObjR) );
-    return Aig_NotCond( pObjNew, Aig_IsComplement(pObj) );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Prints Eqn formula for the AIG rooted at this node.]
-
-  Description [The formula is in terms of PIs, which should have
-  their names assigned in pObj->pData fields.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjPrintEqn( FILE * pFile, Aig_Obj_t * pObj, Vec_Vec_t * vLevels, int Level )
-{
-    Vec_Ptr_t * vSuper;
-    Aig_Obj_t * pFanin;
-    int fCompl, i;
-    // store the complemented attribute
-    fCompl = Aig_IsComplement(pObj);
-    pObj = Aig_Regular(pObj);
-    // constant case
-    if ( Aig_ObjIsConst1(pObj) )
-    {
-        fprintf( pFile, "%d", !fCompl );
-        return;
-    }
-    // PI case
-    if ( Aig_ObjIsPi(pObj) )
-    {
-        fprintf( pFile, "%s%s", fCompl? "!" : "", pObj->pData );
-        return;
-    }
-    // AND case
-    Vec_VecExpand( vLevels, Level );
-    vSuper = Vec_VecEntry(vLevels, Level);
-    Aig_ObjCollectMulti( pObj, vSuper );
-    fprintf( pFile, "%s", (Level==0? "" : "(") );
-    Vec_PtrForEachEntry( vSuper, pFanin, i )
-    {
-        Aig_ObjPrintEqn( pFile, Aig_NotCond(pFanin, fCompl), vLevels, Level+1 );
-        if ( i < Vec_PtrSize(vSuper) - 1 )
-            fprintf( pFile, " %s ", fCompl? "+" : "*" );
-    }
-    fprintf( pFile, "%s", (Level==0? "" : ")") );
-    return;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints Verilog formula for the AIG rooted at this node.]
-
-  Description [The formula is in terms of PIs, which should have
-  their names assigned in pObj->pData fields.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjPrintVerilog( FILE * pFile, Aig_Obj_t * pObj, Vec_Vec_t * vLevels, int Level )
-{
-    Vec_Ptr_t * vSuper;
-    Aig_Obj_t * pFanin, * pFanin0, * pFanin1, * pFaninC;
-    int fCompl, i;
-    // store the complemented attribute
-    fCompl = Aig_IsComplement(pObj);
-    pObj = Aig_Regular(pObj);
-    // constant case
-    if ( Aig_ObjIsConst1(pObj) )
-    {
-        fprintf( pFile, "1\'b%d", !fCompl );
-        return;
-    }
-    // PI case
-    if ( Aig_ObjIsPi(pObj) )
-    {
-        fprintf( pFile, "%s%s", fCompl? "~" : "", pObj->pData );
-        return;
-    }
-    // EXOR case
-    if ( Aig_ObjIsExor(pObj) )
-    {
-        Vec_VecExpand( vLevels, Level );
-        vSuper = Vec_VecEntry( vLevels, Level );
-        Aig_ObjCollectMulti( pObj, vSuper );
-        fprintf( pFile, "%s", (Level==0? "" : "(") );
-        Vec_PtrForEachEntry( vSuper, pFanin, i )
-        {
-            Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin, (fCompl && i==0)), vLevels, Level+1 );
-            if ( i < Vec_PtrSize(vSuper) - 1 )
-                fprintf( pFile, " ^ " );
-        }
-        fprintf( pFile, "%s", (Level==0? "" : ")") );
-        return;
-    }
-    // MUX case
-    if ( Aig_ObjIsMuxType(pObj) )
-    {
-        if ( Aig_ObjRecognizeExor( pObj, &pFanin0, &pFanin1 ) )
-        {
-            fprintf( pFile, "%s", (Level==0? "" : "(") );
-            Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin0, fCompl), vLevels, Level+1 );
-            fprintf( pFile, " ^ " );
-            Aig_ObjPrintVerilog( pFile, pFanin1, vLevels, Level+1 );
-            fprintf( pFile, "%s", (Level==0? "" : ")") );
-        }
-        else 
-        {
-            pFaninC = Aig_ObjRecognizeMux( pObj, &pFanin1, &pFanin0 );
-            fprintf( pFile, "%s", (Level==0? "" : "(") );
-            Aig_ObjPrintVerilog( pFile, pFaninC, vLevels, Level+1 );
-            fprintf( pFile, " ? " );
-            Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin1, fCompl), vLevels, Level+1 );
-            fprintf( pFile, " : " );
-            Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin0, fCompl), vLevels, Level+1 );
-            fprintf( pFile, "%s", (Level==0? "" : ")") );
-        }
-        return;
-    }
-    // AND case
-    Vec_VecExpand( vLevels, Level );
-    vSuper = Vec_VecEntry(vLevels, Level);
-    Aig_ObjCollectMulti( pObj, vSuper );
-    fprintf( pFile, "%s", (Level==0? "" : "(") );
-    Vec_PtrForEachEntry( vSuper, pFanin, i )
-    {
-        Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin, fCompl), vLevels, Level+1 );
-        if ( i < Vec_PtrSize(vSuper) - 1 )
-            fprintf( pFile, " %s ", fCompl? "|" : "&" );
-    }
-    fprintf( pFile, "%s", (Level==0? "" : ")") );
-    return;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Prints node in HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ObjPrintVerbose( Aig_Obj_t * pObj, int fHaig )
-{
-    assert( !Aig_IsComplement(pObj) );
-    printf( "Node %p : ", pObj );
-    if ( Aig_ObjIsConst1(pObj) )
-        printf( "constant 1" );
-    else if ( Aig_ObjIsPi(pObj) )
-        printf( "PI" );
-    else
-        printf( "AND( %p%s, %p%s )", 
-            Aig_ObjFanin0(pObj), (Aig_ObjFaninC0(pObj)? "\'" : " "), 
-            Aig_ObjFanin1(pObj), (Aig_ObjFaninC1(pObj)? "\'" : " ") );
-    printf( " (refs = %3d)", Aig_ObjRefs(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints node in HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManPrintVerbose( Aig_Man_t * p, int fHaig )
-{
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj;
-    int i;
-    printf( "PIs: " );
-    Aig_ManForEachPi( p, pObj, i )
-        printf( " %p", pObj );
-    printf( "\n" );
-    vNodes = Aig_ManDfs( p );
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Aig_ObjPrintVerbose( pObj, fHaig ), printf( "\n" );
-    printf( "\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Write speculative miter for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManDump( Aig_Man_t * p )
-{ 
-    static int Counter = 0;
-    char FileName[20];
-    // dump the logic into a file
-    sprintf( FileName, "aigbug\\%03d.blif", ++Counter );
-    Aig_ManDumpBlif( p, FileName );
-    printf( "Intermediate AIG with %d nodes was written into file \"%s\".\n", Aig_ManNodeNum(p), FileName );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the AIG into the BLIF file.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManDumpBlif( Aig_Man_t * p, char * pFileName )
-{
-    FILE * pFile;
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj, * pObjLi, * pObjLo, * pConst1 = NULL;
-    int i, nDigits, Counter = 0;
-    if ( Aig_ManPoNum(p) == 0 )
-    {
-        printf( "Aig_ManDumpBlif(): AIG manager does not have POs.\n" );
-        return;
-    }
-    // collect nodes in the DFS order
-    vNodes = Aig_ManDfs( p );
-    // assign IDs to objects
-    Aig_ManConst1(p)->iData = Counter++;
-    Aig_ManForEachPi( p, pObj, i )
-        pObj->iData = Counter++;
-    Aig_ManForEachPo( p, pObj, i )
-        pObj->iData = Counter++;
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        pObj->iData = Counter++;
-    nDigits = Aig_Base10Log( Counter );
-    // write the file
-    pFile = fopen( pFileName, "w" );
-    fprintf( pFile, "# BLIF file written by procedure Aig_ManDumpBlif() in ABC\n" );
-    fprintf( pFile, "# http://www.eecs.berkeley.edu/~alanmi/abc/\n" );
-    fprintf( pFile, ".model test\n" );
-    // write PIs
-    fprintf( pFile, ".inputs" );
-    Aig_ManForEachPiSeq( p, pObj, i )
-        fprintf( pFile, " n%0*d", nDigits, pObj->iData );
-    fprintf( pFile, "\n" );
-    // write POs
-    fprintf( pFile, ".outputs" );
-    Aig_ManForEachPoSeq( p, pObj, i )
-        fprintf( pFile, " n%0*d", nDigits, pObj->iData );
-    fprintf( pFile, "\n" );
-    // write latches
-    if ( Aig_ManRegNum(p) )
-    {
-    fprintf( pFile, "\n" );
-    Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-        fprintf( pFile, ".latch n%0*d n%0*d 0\n", nDigits, pObjLi->iData, nDigits, pObjLo->iData );
-    fprintf( pFile, "\n" );
-    }
-    // write nodes
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-    {
-        fprintf( pFile, ".names n%0*d n%0*d n%0*d\n", 
-            nDigits, Aig_ObjFanin0(pObj)->iData, 
-            nDigits, Aig_ObjFanin1(pObj)->iData, 
-            nDigits, pObj->iData );
-        fprintf( pFile, "%d%d 1\n", !Aig_ObjFaninC0(pObj), !Aig_ObjFaninC1(pObj) );
-    }
-    // write POs
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        fprintf( pFile, ".names n%0*d n%0*d\n", 
-            nDigits, Aig_ObjFanin0(pObj)->iData, 
-            nDigits, pObj->iData );
-        fprintf( pFile, "%d 1\n", !Aig_ObjFaninC0(pObj) );
-        if ( Aig_ObjIsConst1(Aig_ObjFanin0(pObj)) )
-            pConst1 = Aig_ManConst1(p);
-    }
-    if ( pConst1 )
-        fprintf( pFile, ".names n%0*d\n 1\n", nDigits, pConst1->iData );
-    fprintf( pFile, ".end\n\n" );
-    fclose( pFile );
-    Vec_PtrFree( vNodes );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the AIG into the BLIF file.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManDumpVerilog( Aig_Man_t * p, char * pFileName )
-{
-    FILE * pFile;
-    Vec_Ptr_t * vNodes;
-    Aig_Obj_t * pObj, * pObjLi, * pObjLo, * pConst1 = NULL;
-    int i, nDigits, Counter = 0;
-    if ( Aig_ManPoNum(p) == 0 )
-    {
-        printf( "Aig_ManDumpBlif(): AIG manager does not have POs.\n" );
-        return;
-    }
-    // collect nodes in the DFS order
-    vNodes = Aig_ManDfs( p );
-    // assign IDs to objects
-    Aig_ManConst1(p)->iData = Counter++;
-    Aig_ManForEachPi( p, pObj, i )
-        pObj->iData = Counter++;
-    Aig_ManForEachPo( p, pObj, i )
-        pObj->iData = Counter++;
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        pObj->iData = Counter++;
-    nDigits = Aig_Base10Log( Counter );
-    // write the file
-    pFile = fopen( pFileName, "w" );
-    fprintf( pFile, "// Verilog file written by procedure Aig_ManDumpVerilog() in ABC\n" );
-    fprintf( pFile, "// http://www.eecs.berkeley.edu/~alanmi/abc/\n" );
-    fprintf( pFile, "module %s ( clock", p->pName? p->pName: "test" );
-    Aig_ManForEachPiSeq( p, pObj, i )
-        fprintf( pFile, ", n%0*d", nDigits, pObj->iData );
-    Aig_ManForEachPoSeq( p, pObj, i )
-        fprintf( pFile, ", n%0*d", nDigits, pObj->iData );
-    fprintf( pFile, " );\n" );
-
-    // write PIs
-    Aig_ManForEachPiSeq( p, pObj, i )
-        fprintf( pFile, "input n%0*d;\n", nDigits, pObj->iData );
-    // write POs
-    Aig_ManForEachPoSeq( p, pObj, i )
-        fprintf( pFile, "output n%0*d;\n", nDigits, pObj->iData );
-    // write latches
-    if ( Aig_ManRegNum(p) )
-    {
-    Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-        fprintf( pFile, "reg n%0*d;\n", nDigits, pObjLo->iData );
-    Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-        fprintf( pFile, "wire n%0*d;\n", nDigits, pObjLi->iData );
-    }
-    // write nodes
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        fprintf( pFile, "wire n%0*d;\n", nDigits, pObj->iData );
-    // write nodes
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-    {
-        fprintf( pFile, "assign n%0*d = %sn%0*d & %sn%0*d;\n", 
-            nDigits, pObj->iData,
-            !Aig_ObjFaninC0(pObj) ? " " : "~", nDigits, Aig_ObjFanin0(pObj)->iData, 
-            !Aig_ObjFaninC1(pObj) ? " " : "~", nDigits, Aig_ObjFanin1(pObj)->iData
-            );
-    }
-    // write POs
-    Aig_ManForEachPoSeq( p, pObj, i )
-    {
-        fprintf( pFile, "assign n%0*d = %sn%0*d;\n", 
-            nDigits, pObj->iData,
-            !Aig_ObjFaninC0(pObj) ? " " : "~", nDigits, Aig_ObjFanin0(pObj)->iData );
-        if ( Aig_ObjIsConst1(Aig_ObjFanin0(pObj)) )
-            pConst1 = Aig_ManConst1(p);
-    }
-    if ( Aig_ManRegNum(p) )
-    {
-        Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-        {
-            fprintf( pFile, "assign n%0*d = %sn%0*d;\n", 
-                nDigits, pObjLi->iData,
-                !Aig_ObjFaninC0(pObjLi) ? " " : "~", nDigits, Aig_ObjFanin0(pObjLi)->iData );
-            if ( Aig_ObjIsConst1(Aig_ObjFanin0(pObjLi)) )
-                pConst1 = Aig_ManConst1(p);
-        }
-    }
-    if ( pConst1 )
-        fprintf( pFile, "assign n%0*d = 1\'b1;\n", nDigits, pConst1->iData );
-
-    // write initial state
-    if ( Aig_ManRegNum(p) )
-    {
-        Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-            fprintf( pFile, "always @ (posedge clock) begin n%0*d <= n%0*d; end\n", 
-                 nDigits, pObjLo->iData,
-                 nDigits, pObjLi->iData );
-        Aig_ManForEachLiLoSeq( p, pObjLi, pObjLo, i )
-            fprintf( pFile, "initial begin n%0*d <= 1\'b0; end\n", 
-                 nDigits, pObjLo->iData );
-    }
-
-    fprintf( pFile, "endmodule\n\n" );
-    fclose( pFile );
-    Vec_PtrFree( vNodes );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aigWin.c b/src/aig/aig/aigWin.c
deleted file mode 100644
index 0485b243..00000000
--- a/src/aig/aig/aigWin.c
+++ /dev/null
@@ -1,184 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aigWin.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [Window computation.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aigWin.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Evaluate the cost of removing the node from the set of leaves.]
-
-  Description [Returns the number of new leaves that will be brought in.
-  Returns large number if the node cannot be removed from the set of leaves.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Aig_NodeGetLeafCostOne( Aig_Obj_t * pNode, int nFanoutLimit )
-{
-    int Cost;
-    // make sure the node is in the construction zone
-    assert( pNode->fMarkA );  
-    // cannot expand over the PI node
-    if ( Aig_ObjIsPi(pNode) )
-        return 999;
-    // get the cost of the cone
-    Cost = (!Aig_ObjFanin0(pNode)->fMarkA) + (!Aig_ObjFanin1(pNode)->fMarkA);
-    // always accept if the number of leaves does not increase
-    if ( Cost < 2 )
-        return Cost;
-    // skip nodes with many fanouts
-    if ( (int)pNode->nRefs > nFanoutLimit )
-        return 999;
-    // return the number of nodes that will be on the leaves if this node is removed
-    return Cost;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Builds reconvergence-driven cut by changing one leaf at a time.]
-
-  Description [This procedure looks at the current leaves and tries to change 
-  one leaf at a time in such a way that the cut grows as little as possible.
-  In evaluating the fanins, this procedure looks only at their immediate 
-  predecessors (this is why it is called a one-level construction procedure).]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManFindCut_int( Vec_Ptr_t * vFront, Vec_Ptr_t * vVisited, int nSizeLimit, int nFanoutLimit )
-{
-    Aig_Obj_t * pNode, * pFaninBest, * pNext;
-    int CostBest, CostCur, i;
-    // find the best fanin
-    CostBest   = 100;
-    pFaninBest = NULL;
-//printf( "Evaluating fanins of the cut:\n" );
-    Vec_PtrForEachEntry( vFront, pNode, i )
-    {
-        CostCur = Aig_NodeGetLeafCostOne( pNode, nFanoutLimit );
-//printf( "    Fanin %s has cost %d.\n", Aig_ObjName(pNode), CostCur );
-        if ( CostBest > CostCur ||
-            (CostBest == CostCur && pNode->Level > pFaninBest->Level) )
-        {
-            CostBest   = CostCur;
-            pFaninBest = pNode;
-        }
-        if ( CostBest == 0 )
-            break;
-    }
-    if ( pFaninBest == NULL )
-        return 0;
-    assert( CostBest < 3 );
-    if ( Vec_PtrSize(vFront) - 1 + CostBest > nSizeLimit )
-        return 0;
-    assert( Aig_ObjIsNode(pFaninBest) );
-    // remove the node from the array
-    Vec_PtrRemove( vFront, pFaninBest );
-//printf( "Removing fanin %s.\n", Aig_ObjName(pFaninBest) );
-
-    // add the left child to the fanins
-    pNext = Aig_ObjFanin0(pFaninBest);
-    if ( !pNext->fMarkA )
-    {
-//printf( "Adding fanin %s.\n", Aig_ObjName(pNext) );
-        pNext->fMarkA = 1;
-        Vec_PtrPush( vFront, pNext );
-        Vec_PtrPush( vVisited, pNext );
-    }
-    // add the right child to the fanins
-    pNext = Aig_ObjFanin1(pFaninBest);
-    if ( !pNext->fMarkA )
-    {
-//printf( "Adding fanin %s.\n", Aig_ObjName(pNext) );
-        pNext->fMarkA = 1;
-        Vec_PtrPush( vFront, pNext );
-        Vec_PtrPush( vVisited, pNext );
-    }
-    assert( Vec_PtrSize(vFront) <= nSizeLimit );
-    // keep doing this
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes one sequential cut of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManFindCut( Aig_Obj_t * pRoot, Vec_Ptr_t * vFront, Vec_Ptr_t * vVisited, int nSizeLimit, int nFanoutLimit )
-{
-    Aig_Obj_t * pNode;
-    int i;
-
-    assert( !Aig_IsComplement(pRoot) );
-    assert( Aig_ObjIsNode(pRoot) );
-    assert( Aig_ObjChild0(pRoot) );
-    assert( Aig_ObjChild1(pRoot) );
-
-    // start the cut 
-    Vec_PtrClear( vFront );
-    Vec_PtrPush( vFront, Aig_ObjFanin0(pRoot) );
-    Vec_PtrPush( vFront, Aig_ObjFanin1(pRoot) );
-
-    // start the visited nodes
-    Vec_PtrClear( vVisited );
-    Vec_PtrPush( vVisited, pRoot );
-    Vec_PtrPush( vVisited, Aig_ObjFanin0(pRoot) );
-    Vec_PtrPush( vVisited, Aig_ObjFanin1(pRoot) );
-
-    // mark these nodes
-    assert( !pRoot->fMarkA );
-    assert( !Aig_ObjFanin0(pRoot)->fMarkA );
-    assert( !Aig_ObjFanin1(pRoot)->fMarkA );
-    pRoot->fMarkA = 1;
-    Aig_ObjFanin0(pRoot)->fMarkA = 1;
-    Aig_ObjFanin1(pRoot)->fMarkA = 1;
-
-    // compute the cut
-    while ( Aig_ManFindCut_int( vFront, vVisited, nSizeLimit, nFanoutLimit ) );
-    assert( Vec_PtrSize(vFront) <= nSizeLimit );
-
-    // clean the visit markings
-    Vec_PtrForEachEntry( vVisited, pNode, i )
-        pNode->fMarkA = 0;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/aig_.c b/src/aig/aig/aig_.c
deleted file mode 100644
index b2313d35..00000000
--- a/src/aig/aig/aig_.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [aig_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: aig_.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/aig/module.make b/src/aig/aig/module.make
deleted file mode 100644
index c35e7121..00000000
--- a/src/aig/aig/module.make
+++ /dev/null
@@ -1,21 +0,0 @@
-SRC +=    src/aig/aig/aigCheck.c \
-    src/aig/aig/aigDfs.c \
-    src/aig/aig/aigFanout.c \
-    src/aig/aig/aigMan.c \
-    src/aig/aig/aigMem.c \
-    src/aig/aig/aigMffc.c \
-    src/aig/aig/aigObj.c \
-    src/aig/aig/aigOper.c \
-    src/aig/aig/aigOrder.c \
-    src/aig/aig/aigPart.c \
-    src/aig/aig/aigRepr.c \
-    src/aig/aig/aigRet.c \
-    src/aig/aig/aigScl.c \
-    src/aig/aig/aigSeq.c \
-    src/aig/aig/aigTable.c \
-    src/aig/aig/aigTime.c \
-    src/aig/aig/aigTiming.c \
-    src/aig/aig/aigTruth.c \
-    src/aig/aig/aigTsim.c \
-    src/aig/aig/aigUtil.c \
-    src/aig/aig/aigWin.c
\ No newline at end of file
diff --git a/src/aig/bar/bar.c b/src/aig/bar/bar.c
deleted file mode 100644
index 8c215b48..00000000
--- a/src/aig/bar/bar.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [bar.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [extra]
-
-  Synopsis    [Progress bar.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: bar.c,v 1.0 2003/02/01 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "bar.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-struct Bar_Progress_t_
-{
-    int              nItemsNext;   // the number of items for the next update of the progress bar
-    int              nItemsTotal;  // the total number of items
-    int              posTotal;     // the total number of positions
-    int              posCur;       // the current position
-    FILE *           pFile;        // the output stream 
-};
-
-static void Bar_ProgressShow( Bar_Progress_t * p, char * pString );
-static void Bar_ProgressClean( Bar_Progress_t * p );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the progress bar.]
-
-  Description [The first parameter is the output stream (pFile), where
-  the progress is printed. The current printing position should be the
-  first one on the given line. The second parameters is the total
-  number of items that correspond to 100% position of the progress bar.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Bar_Progress_t * Bar_ProgressStart( FILE * pFile, int nItemsTotal )
-{
-    Bar_Progress_t * p;
-//    extern int Abc_FrameShowProgress( void * p );
-//    extern void * Abc_FrameGetGlobalFrame();
-//    if ( !Abc_FrameShowProgress(Abc_FrameGetGlobalFrame()) ) return NULL;
-    p = (Bar_Progress_t *) malloc(sizeof(Bar_Progress_t));
-    memset( p, 0, sizeof(Bar_Progress_t) );
-    p->pFile       = pFile;
-    p->nItemsTotal = nItemsTotal;
-    p->posTotal    = 78;
-    p->posCur      = 1;
-    p->nItemsNext  = (int)((7.0+p->posCur)*p->nItemsTotal/p->posTotal);
-    Bar_ProgressShow( p, NULL );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the progress bar.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Bar_ProgressUpdate_int( Bar_Progress_t * p, int nItemsCur, char * pString )
-{
-    if ( p == NULL ) return;
-    if ( nItemsCur < p->nItemsNext )
-        return;
-    if ( nItemsCur >= p->nItemsTotal )
-    {
-        p->posCur = 78;
-        p->nItemsNext = 0x7FFFFFFF;
-    }
-    else
-    {
-        p->posCur += 7;
-        p->nItemsNext = (int)((7.0+p->posCur)*p->nItemsTotal/p->posTotal);
-    }
-    Bar_ProgressShow( p, pString );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the progress bar.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Bar_ProgressStop( Bar_Progress_t * p )
-{
-    if ( p == NULL ) return;
-    Bar_ProgressClean( p );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints the progress bar of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Bar_ProgressShow( Bar_Progress_t * p, char * pString )
-{
-    int i;
-    if ( p == NULL ) return;
-    if ( pString )
-        fprintf( p->pFile, "%s ", pString );
-    for ( i = (pString? strlen(pString) + 1 : 0); i < p->posCur; i++ )
-        fprintf( p->pFile, "-" );
-    if ( i == p->posCur )
-        fprintf( p->pFile, ">" );
-    for ( i++  ; i <= p->posTotal; i++ )
-        fprintf( p->pFile, " " );
-    fprintf( p->pFile, "\r" );
-    fflush( stdout );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Cleans the progress bar before quitting.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Bar_ProgressClean( Bar_Progress_t * p )
-{
-    int i;
-    if ( p == NULL ) return;
-    for ( i = 0; i <= p->posTotal; i++ )
-        fprintf( p->pFile, " " );
-    fprintf( p->pFile, "\r" );
-    fflush( stdout );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/bar/bar.h b/src/aig/bar/bar.h
deleted file mode 100644
index 814fbe6f..00000000
--- a/src/aig/bar/bar.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [bar.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Progress bar.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: bar.h,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
-
-***********************************************************************/
- 
-#ifndef __BAR_H__
-#define __BAR_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef _WIN32
-#define inline __inline // compatible with MS VS 6.0
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-#define BAR_PROGRESS_USE   1
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
- 
-typedef struct Bar_Progress_t_ Bar_Progress_t;
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== bar.c ==========================================================*/
-extern Bar_Progress_t *  Bar_ProgressStart( FILE * pFile, int nItemsTotal );
-extern void              Bar_ProgressStop( Bar_Progress_t * p );
-extern void              Bar_ProgressUpdate_int( Bar_Progress_t * p, int nItemsCur, char * pString );
-
-static inline void       Bar_ProgressUpdate( Bar_Progress_t * p, int nItemsCur, char * pString ) {  
-    if ( BAR_PROGRESS_USE && p && (nItemsCur < *((int*)p)) ) return; Bar_ProgressUpdate_int(p, nItemsCur, pString); }
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/bar/module.make b/src/aig/bar/module.make
deleted file mode 100644
index 26161ba1..00000000
--- a/src/aig/bar/module.make
+++ /dev/null
@@ -1 +0,0 @@
-SRC +=    src/aig/bar/bar.c 
diff --git a/src/aig/bdc/bdc.h b/src/aig/bdc/bdc.h
deleted file mode 100644
index 71875edb..00000000
--- a/src/aig/bdc/bdc.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [bdc.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Truth-table-based bi-decomposition engine.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - January 30, 2007.]
-
-  Revision    [$Id: bdc.h,v 1.00 2007/01/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
- 
-#ifndef __BDC_H__
-#define __BDC_H__
- 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Bdc_Man_t_ Bdc_Man_t;
-typedef struct Bdc_Par_t_ Bdc_Par_t;
-struct Bdc_Par_t_
-{
-    // general parameters
-    int           nVarsMax;      // the maximum support
-    int           fVerbose;      // enable basic stats
-    int           fVeryVerbose;  // enable detailed stats
-};
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== bdcCore.c ==========================================================*/
-extern Bdc_Man_t * Bdc_ManAlloc( Bdc_Par_t * pPars );
-extern void        Bdc_ManFree( Bdc_Man_t * p );
-extern int         Bdc_ManDecompose( Bdc_Man_t * p, unsigned * puFunc, unsigned * puCare, int nVars, Vec_Ptr_t * vDivs, int nNodesLimit );
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/bdc/bdcCore.c b/src/aig/bdc/bdcCore.c
deleted file mode 100644
index 157927b1..00000000
--- a/src/aig/bdc/bdcCore.c
+++ /dev/null
@@ -1,189 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [bdcCore.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Truth-table-based bi-decomposition engine.]
-
-  Synopsis    [The gateway to bi-decomposition.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - January 30, 2007.]
-
-  Revision    [$Id: bdcCore.c,v 1.00 2007/01/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "bdcInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Allocate resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Bdc_Man_t * Bdc_ManAlloc( Bdc_Par_t * pPars )
-{
-    Bdc_Man_t * p;
-    unsigned * pData;
-    int i, k, nBits;
-    p = ALLOC( Bdc_Man_t, 1 );
-    memset( p, 0, sizeof(Bdc_Man_t) );
-    assert( pPars->nVarsMax > 3 && pPars->nVarsMax < 16 );
-    p->pPars = pPars;
-    p->nWords = Kit_TruthWordNum( pPars->nVarsMax );
-    p->nDivsLimit = 200;
-    p->nNodesLimit = 0; // will be set later
-    // memory
-    p->vMemory = Vec_IntStart( 1 << 16 );
-    // internal nodes
-    p->nNodesAlloc = 512;
-    p->pNodes = ALLOC( Bdc_Fun_t, p->nNodesAlloc );
-    // set up hash table
-    p->nTableSize = (1 << p->pPars->nVarsMax);
-    p->pTable = ALLOC( Bdc_Fun_t *, p->nTableSize );
-    memset( p->pTable, 0, sizeof(Bdc_Fun_t *) * p->nTableSize );
-    p->vSpots = Vec_IntAlloc( 256 );
-    // truth tables
-    p->vTruths = Vec_PtrAllocSimInfo( pPars->nVarsMax + 5, p->nWords );
-    // set elementary truth tables
-    nBits = (1 << pPars->nVarsMax);
-    Kit_TruthFill( Vec_PtrEntry(p->vTruths, 0), p->nVars );
-    for ( k = 0; k < pPars->nVarsMax; k++ )
-    {
-        pData = Vec_PtrEntry( p->vTruths, k+1 );
-        Kit_TruthClear( pData, p->nVars );
-        for ( i = 0; i < nBits; i++ )
-            if ( i & (1 << k) )
-                pData[i>>5] |= (1 << (i&31));
-    }
-    p->puTemp1 = Vec_PtrEntry( p->vTruths, pPars->nVarsMax + 1 );
-    p->puTemp2 = Vec_PtrEntry( p->vTruths, pPars->nVarsMax + 2 );
-    p->puTemp3 = Vec_PtrEntry( p->vTruths, pPars->nVarsMax + 3 );
-    p->puTemp4 = Vec_PtrEntry( p->vTruths, pPars->nVarsMax + 4 );
-    // start the internal ISFs
-    p->pIsfOL = &p->IsfOL;  Bdc_IsfStart( p, p->pIsfOL );
-    p->pIsfOR = &p->IsfOR;  Bdc_IsfStart( p, p->pIsfOR );
-    p->pIsfAL = &p->IsfAL;  Bdc_IsfStart( p, p->pIsfAL );
-    p->pIsfAR = &p->IsfAR;  Bdc_IsfStart( p, p->pIsfAR );   
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deallocate resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Bdc_ManFree( Bdc_Man_t * p )
-{
-    Vec_IntFree( p->vMemory );
-    Vec_IntFree( p->vSpots );
-    Vec_PtrFree( p->vTruths );
-    free( p->pNodes );
-    free( p->pTable );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Clears the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Bdc_ManPrepare( Bdc_Man_t * p, Vec_Ptr_t * vDivs )
-{
-    unsigned * puTruth;
-    Bdc_Fun_t * pNode;
-    int i;
-    Bdc_TableClear( p );
-    Vec_IntClear( p->vMemory );
-    // add constant 1 and elementary vars
-    p->nNodes = p->nNodesNew = 0;
-    for ( i = 0; i <= p->pPars->nVarsMax; i++ )
-    {
-        pNode = Bdc_FunNew( p );
-        pNode->Type = BDC_TYPE_PI;
-        pNode->puFunc = Vec_PtrEntry( p->vTruths, i );
-        pNode->uSupp = i? (1 << (i-1)) : 0;
-        Bdc_TableAdd( p, pNode );
-    }
-    // add the divisors
-    Vec_PtrForEachEntry( vDivs, puTruth, i )
-    {
-        pNode = Bdc_FunNew( p );
-        pNode->Type = BDC_TYPE_PI;
-        pNode->puFunc = puTruth;
-        pNode->uSupp = Kit_TruthSupport( puTruth, p->nVars );
-        Bdc_TableAdd( p, pNode );
-        if ( i == p->nDivsLimit )
-            break;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of one function.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Bdc_ManDecompose( Bdc_Man_t * p, unsigned * puFunc, unsigned * puCare, int nVars, Vec_Ptr_t * vDivs, int nNodesMax )
-{
-    Bdc_Isf_t Isf, * pIsf = &Isf;
-    // set current manager parameters
-    p->nVars = nVars;
-    p->nWords = Kit_TruthWordNum( nVars );
-    Bdc_ManPrepare( p, vDivs );
-    p->nNodesLimit = (p->nNodes + nNodesMax < p->nNodesAlloc)? p->nNodes + nNodesMax : p->nNodesAlloc;
-    // copy the function
-    Bdc_IsfStart( p, pIsf );
-    Bdc_IsfClean( pIsf );
-    pIsf->uSupp = Kit_TruthSupport( puFunc, p->nVars ) | Kit_TruthSupport( puCare, p->nVars );
-    Kit_TruthAnd( pIsf->puOn, puCare, puFunc, p->nVars );
-    Kit_TruthSharp( pIsf->puOff, puCare, puFunc, p->nVars );
-    // call decomposition
-    Bdc_SuppMinimize( p, pIsf );
-    p->pRoot = Bdc_ManDecompose_rec( p, pIsf );
-    if ( p->pRoot == NULL )
-        return -1;
-    return p->nNodesNew;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/bdc/bdcDec.c b/src/aig/bdc/bdcDec.c
deleted file mode 100644
index 747fcb14..00000000
--- a/src/aig/bdc/bdcDec.c
+++ /dev/null
@@ -1,461 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [bdcDec.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Truth-table-based bi-decomposition engine.]
-
-  Synopsis    [Decomposition procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - January 30, 2007.]
-
-  Revision    [$Id: bdcDec.c,v 1.00 2007/01/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "bdcInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static Bdc_Type_t Bdc_DecomposeStep( Bdc_Man_t * p, Bdc_Isf_t * pIsf, Bdc_Isf_t * pIsfL, Bdc_Isf_t * pIsfR );
-static int        Bdc_DecomposeUpdateRight( Bdc_Man_t * p, Bdc_Isf_t * pIsf, Bdc_Isf_t * pIsfL, Bdc_Isf_t * pIsfR, unsigned * puTruth, Bdc_Type_t Type );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Performs one step of bi-decomposition.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Bdc_Fun_t * Bdc_ManDecompose_rec( Bdc_Man_t * p, Bdc_Isf_t * pIsf )
-{
-    Bdc_Fun_t * pFunc;
-    Bdc_Isf_t IsfL, * pIsfL = &IsfL;
-    Bdc_Isf_t IsfB, * pIsfR = &IsfB;
-    // check computed results
-    if ( pFunc = Bdc_TableLookup( p, pIsf ) )
-        return pFunc;
-    // decide on the decomposition type
-    pFunc = Bdc_FunNew( p );
-    if ( pFunc == NULL )
-        return NULL;
-    pFunc->Type = Bdc_DecomposeStep( p, pIsf, pIsfL, pIsfR );
-    // decompose the left branch
-    pFunc->pFan0 = Bdc_ManDecompose_rec( p, pIsfL );
-    if ( pFunc->pFan0 == NULL )
-        return NULL;
-    // decompose the right branch
-    if ( Bdc_DecomposeUpdateRight( p, pIsf, pIsfL, pIsfR, pFunc->pFan0->puFunc, pFunc->Type ) )
-    {
-        p->nNodes--;
-        return pFunc->pFan0;
-    }
-    pFunc->pFan1 = Bdc_ManDecompose_rec( p, pIsfL );
-    if ( pFunc->pFan1 == NULL )
-        return NULL;
-    // compute the function of node
-    pFunc->puFunc = (unsigned *)Vec_IntFetch(p->vMemory, p->nWords); 
-    if ( pFunc->Type == BDC_TYPE_AND )
-        Kit_TruthAnd( pFunc->puFunc, pFunc->pFan0->puFunc, pFunc->pFan1->puFunc, p->nVars );
-    else if ( pFunc->Type == BDC_TYPE_OR )
-        Kit_TruthOr( pFunc->puFunc, pFunc->pFan0->puFunc, pFunc->pFan1->puFunc, p->nVars );
-    else 
-        assert( 0 );
-    // verify correctness
-    assert( Bdc_TableCheckContainment(p, pIsf, pFunc->puFunc) );
-    // convert from OR to AND
-    if ( pFunc->Type == BDC_TYPE_OR )
-    {
-        pFunc->Type = BDC_TYPE_AND;
-        pFunc->pFan0 = Bdc_Not(pFunc->pFan0);
-        pFunc->pFan1 = Bdc_Not(pFunc->pFan1);
-        Kit_TruthNot( pFunc->puFunc, pFunc->puFunc, p->nVars );
-        pFunc = Bdc_Not(pFunc);
-    }
-    Bdc_TableAdd( p, Bdc_Regular(pFunc) );
-    return pFunc;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the ISF of the right after the left was decompoosed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Bdc_DecomposeUpdateRight( Bdc_Man_t * p, Bdc_Isf_t * pIsf, Bdc_Isf_t * pIsfL, Bdc_Isf_t * pIsfR, unsigned * puTruth, Bdc_Type_t Type )
-{
-    if ( Type == BDC_TYPE_OR ) 
-    {
-//        Right.Q = bdd_appex( Q, CompSpecLeftF, bddop_diff, setRightRes );
-//        Right.R = bdd_exist( R, setRightRes );
-
-//        if ( pR->Q )  Cudd_RecursiveDeref( dd, pR->Q );
-//        if ( pR->R )  Cudd_RecursiveDeref( dd, pR->R );
-//        pR->Q = Cudd_bddAndAbstract( dd, pF->Q, Cudd_Not(CompSpecF), pL->V );    Cudd_Ref( pR->Q );
-//        pR->R = Cudd_bddExistAbstract( dd, pF->R, pL->V );                      Cudd_Ref( pR->R );
-
-//        assert( pR->R != b0 );
-//        return (int)( pR->Q == b0 );
-
-        Kit_TruthSharp( pIsfR->puOn, pIsf->puOn, puTruth, p->nVars );
-        Kit_TruthExistSet( pIsfR->puOn, pIsfR->puOn, p->nVars, pIsfL->uSupp ); 
-        Kit_TruthExistSet( pIsfR->puOff, pIsf->puOff, p->nVars, pIsfL->uSupp ); 
-        assert( !Kit_TruthIsConst0(pIsfR->puOff, p->nVars) );
-        return Kit_TruthIsConst0(pIsfR->puOn, p->nVars);
-    }
-    else if ( Type == BDC_TYPE_AND )
-    {
-//        Right.R = bdd_appex( R, CompSpecLeftF, bddop_and, setRightRes );
-//        Right.Q = bdd_exist( Q, setRightRes );
-
-//        if ( pR->Q )  Cudd_RecursiveDeref( dd, pR->Q );
-//        if ( pR->R )  Cudd_RecursiveDeref( dd, pR->R );
-//        pR->R = Cudd_bddAndAbstract( dd, pF->R, CompSpecF, pL->V );                Cudd_Ref( pR->R );
-//        pR->Q = Cudd_bddExistAbstract( dd, pF->Q, pL->V );                      Cudd_Ref( pR->Q );
-
-//        assert( pR->Q != b0 );
-//        return (int)( pR->R == b0 );
-
-        Kit_TruthSharp( pIsfR->puOn, pIsf->puOn, puTruth, p->nVars );
-        Kit_TruthExistSet( pIsfR->puOn, pIsfR->puOn, p->nVars, pIsfL->uSupp ); 
-        Kit_TruthExistSet( pIsfR->puOff, pIsf->puOff, p->nVars, pIsfL->uSupp ); 
-        assert( !Kit_TruthIsConst0(pIsfR->puOff, p->nVars) );
-        return Kit_TruthIsConst0(pIsfR->puOn, p->nVars);
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks existence of OR-bidecomposition.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Bdc_DecomposeGetCost( Bdc_Man_t * p, int nLeftVars, int nRightVars )
-{
-    assert( nLeftVars > 0 );
-    assert( nRightVars > 0 );
-    // compute the decomposition coefficient
-    if ( nLeftVars >= nRightVars )
-        return BDC_SCALE * (p->nVars * nRightVars + nLeftVars);
-    else // if ( nLeftVars < nRightVars )
-        return BDC_SCALE * (p->nVars * nLeftVars + nRightVars);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks existence of weak OR-bidecomposition.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Bdc_DecomposeFindInitialVarSet( Bdc_Man_t * p, Bdc_Isf_t * pIsf, Bdc_Isf_t * pIsfL, Bdc_Isf_t * pIsfR )
-{
-    char pVars[16];
-    int v, nVars, Beg, End;
-
-    assert( pIsfL->uSupp == 0 );
-    assert( pIsfR->uSupp == 0 );
-
-    // fill in the variables
-    nVars = 0;
-    for ( v = 0; v < p->nVars; v++ )
-        if ( pIsf->uSupp & (1 << v) )
-            pVars[nVars++] = v;
-
-    // try variable pairs
-    for ( Beg = 0; Beg < nVars; Beg++ )
-    {
-        Kit_TruthExistNew( p->puTemp1, pIsf->puOff, p->nVars, pVars[Beg] ); 
-        for ( End = nVars - 1; End > Beg; End-- )
-        {
-            Kit_TruthExistNew( p->puTemp2, pIsf->puOff, p->nVars, pVars[End] ); 
-            if ( Kit_TruthIsDisjoint3(pIsf->puOn, p->puTemp1, p->puTemp2, p->nVars) )
-            {
-                pIsfL->uSupp = (1 << Beg);
-                pIsfR->uSupp = (1 << End);
-                pIsfL->Var = Beg;
-                pIsfR->Var = End;
-                return 1;
-            }
-        }
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks existence of weak OR-bidecomposition.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Bdc_DecomposeWeakOr( Bdc_Man_t * p, Bdc_Isf_t * pIsf, Bdc_Isf_t * pIsfL, Bdc_Isf_t * pIsfR )
-{
-    int v, VarCost, VarBest, Cost, VarCostBest = 0;
-
-    for ( v = 0; v < p->nVars; v++ )
-    {
-        Kit_TruthExistNew( p->puTemp1, pIsf->puOff, p->nVars, v );
-//        if ( (Q & !bdd_exist( R, VarSetXa )) != bddfalse )
-//        Exist = Cudd_bddExistAbstract( dd, pF->R, Var );   Cudd_Ref( Exist );
-//        if ( Cudd_bddIteConstant( dd, pF->Q, Cudd_Not(Exist), b0 ) != b0 )
-        if ( !Kit_TruthIsImply( pIsf->puOn, p->puTemp1, p->nVars ) )
-        {
-            // measure the cost of this variable
-//            VarCost = bdd_satcountset( bdd_forall( Q, VarSetXa ), VarCube );
-
-//            Univ = Cudd_bddUnivAbstract( dd, pF->Q, Var );   Cudd_Ref( Univ );
-//            VarCost = Kit_TruthCountOnes( Univ, p->nVars );
-//            Cudd_RecursiveDeref( dd, Univ );
-
-            Kit_TruthForallNew( p->puTemp2, pIsf->puOn, p->nVars, v );
-            VarCost = Kit_TruthCountOnes( p->puTemp2, p->nVars );
-            if ( VarCost == 0 )
-                VarCost = 1;
-            if ( VarCostBest < VarCost )
-            {
-                VarCostBest = VarCost;
-                VarBest = v;
-            }
-        }
-    }
-
-    // derive the components for weak-bi-decomposition if the variable is found
-    if ( VarCostBest )
-    {
-//        funQLeftRes = Q & bdd_exist( R, setRightORweak );
-
-//        Temp = Cudd_bddExistAbstract( dd, pF->R, VarBest );     Cudd_Ref( Temp );
-//        pL->Q = Cudd_bddAnd( dd, pF->Q, Temp );                    Cudd_Ref( pL->Q );
-//        Cudd_RecursiveDeref( dd, Temp );
-
-        Kit_TruthExistNew( p->puTemp1, pIsf->puOff, p->nVars, VarBest );
-        Kit_TruthAnd( pIsfL->puOn, pIsf->puOn, p->puTemp1, p->nVars );
-
-//        pL->R = pF->R;                                            Cudd_Ref( pL->R );
-//        pL->V = VarBest;                                        Cudd_Ref( pL->V );
-        Kit_TruthCopy( pIsfL->puOff, pIsf->puOff, p->nVars );
-        pIsfL->Var = VarBest;
-
-//        assert( pL->Q != b0 );
-//        assert( pL->R != b0 );
-//        assert( Cudd_bddIteConstant( dd, pL->Q, pL->R, b0 ) == b0 );
-
-        // express cost in percents of the covered boolean space
-        Cost = VarCostBest * BDC_SCALE / (1<<p->nVars);
-        if ( Cost == 0 )
-            Cost = 1;
-        return Cost;
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks existence of OR-bidecomposition.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Bdc_DecomposeOr( Bdc_Man_t * p, Bdc_Isf_t * pIsf, Bdc_Isf_t * pIsfL, Bdc_Isf_t * pIsfR )
-{
-    unsigned uSuppRem;
-    int v, nLeftVars = 1, nRightVars = 1; 
-    // clean the var sets
-    Bdc_IsfClean( pIsfL );
-    Bdc_IsfClean( pIsfR );
-    // find initial variable sets
-    if ( !Bdc_DecomposeFindInitialVarSet( p, pIsf, pIsfL, pIsfR ) )
-        return Bdc_DecomposeWeakOr( p, pIsf, pIsfL, pIsfR );
-    // prequantify the variables in the offset
-    Kit_TruthExistNew( p->puTemp1, pIsf->puOff, p->nVars, pIsfL->Var ); 
-    Kit_TruthExistNew( p->puTemp2, pIsf->puOff, p->nVars, pIsfR->Var );
-    // go through the remaining variables
-    uSuppRem = pIsf->uSupp & ~pIsfL->uSupp & ~pIsfR->uSupp;
-    assert( Kit_WordCountOnes(uSuppRem) > 0 );
-    for ( v = 0; v < p->nVars; v++ )
-    {
-        if ( (uSuppRem & (1 << v)) == 0 )
-            continue;
-        // prequantify this variable
-        Kit_TruthExistNew( p->puTemp3, p->puTemp1, p->nVars, v );
-        Kit_TruthExistNew( p->puTemp4, p->puTemp2, p->nVars, v );
-        if ( nLeftVars < nRightVars )
-        {
-//            if ( (Q & bdd_exist( pF->R, pL->V & VarNew ) & bdd_exist( pF->R, pR->V )) == bddfalse )
-//            if ( VerifyORCondition( dd, pF->Q, pF->R, pL->V, pR->V, VarNew ) )
-            if ( Kit_TruthIsDisjoint3(pIsf->puOn, p->puTemp3, p->puTemp2, p->nVars) )
-            {
-//                pL->V &= VarNew;
-                pIsfL->uSupp |= (1 << v);
-                nLeftVars++;
-            }
-//            else if ( (Q & bdd_exist( pF->R, pR->V & VarNew ) & bdd_exist( pF->R, pL->V )) == bddfalse )
-            else if ( Kit_TruthIsDisjoint3(pIsf->puOn, p->puTemp4, p->puTemp1, p->nVars) )
-            {
-//                pR->V &= VarNew;
-                pIsfR->uSupp |= (1 << v);
-                nRightVars++;
-            }
-        }
-        else
-        {
-//            if ( (Q & bdd_exist( pF->R, pR->V & VarNew ) & bdd_exist( pF->R, pL->V )) == bddfalse )
-            if ( Kit_TruthIsDisjoint3(pIsf->puOn, p->puTemp4, p->puTemp1, p->nVars) )
-            {
-//                pR->V &= VarNew;
-                pIsfR->uSupp |= (1 << v);
-                nRightVars++;
-            }
-//            else if ( (Q & bdd_exist( pF->R, pL->V & VarNew ) & bdd_exist( pF->R, pR->V )) == bddfalse )
-            else if ( Kit_TruthIsDisjoint3(pIsf->puOn, p->puTemp3, p->puTemp2, p->nVars) )
-            {
-//                pL->V &= VarNew;
-                pIsfL->uSupp |= (1 << v);
-                nLeftVars++;
-            }
-        }
-    }
-
-    // derive the functions Q and R for the left branch
-//    pL->Q = bdd_appex( pF->Q, bdd_exist( pF->R, pL->V ), bddop_and, pR->V );
-//    pL->R = bdd_exist( pF->R, pR->V );
-
-//    Temp = Cudd_bddExistAbstract( dd, pF->R, pL->V );      Cudd_Ref( Temp );
-//    pL->Q = Cudd_bddAndAbstract( dd, pF->Q, Temp, pR->V ); Cudd_Ref( pL->Q );
-//    Cudd_RecursiveDeref( dd, Temp );
-//    pL->R = Cudd_bddExistAbstract( dd, pF->R, pR->V );     Cudd_Ref( pL->R );
-
-    Kit_TruthAnd( pIsfL->puOn, pIsf->puOn, p->puTemp1, p->nVars );
-    Kit_TruthExistSet( pIsfL->puOn, pIsfL->puOn, p->nVars, pIsfR->uSupp );
-    Kit_TruthCopy( pIsfL->puOff, p->puTemp2, p->nVars );
-
-    // derive the functions Q and R for the right branch
-//    Temp = Cudd_bddExistAbstract( dd, pF->R, pR->V );      Cudd_Ref( Temp );
-//    pR->Q = Cudd_bddAndAbstract( dd, pF->Q, Temp, pL->V ); Cudd_Ref( pR->Q );
-//    Cudd_RecursiveDeref( dd, Temp );
-//    pR->R = Cudd_bddExistAbstract( dd, pF->R, pL->V );     Cudd_Ref( pR->R );
-
-/*
-    Kit_TruthAnd( pIsfR->puOn, pIsf->puOn, p->puTemp2, p->nVars );
-    Kit_TruthExistSet( pIsfR->puOn, pIsfR->puOn, p->nVars, pIsfL->uSupp );
-    Kit_TruthCopy( pIsfR->puOff, p->puTemp1, p->nVars );
-*/
-
-//    assert( pL->Q != b0 );
-//    assert( pL->R != b0 );
-//    assert( Cudd_bddIteConstant( dd, pL->Q, pL->R, b0 ) == b0 );
-    assert( !Kit_TruthIsConst0(pIsfL->puOn, p->nVars) );
-    assert( !Kit_TruthIsConst0(pIsfL->puOff, p->nVars) );
-    assert( Kit_TruthIsDisjoint(pIsfL->puOn, pIsfL->puOff, p->nVars) );
-
-    return Bdc_DecomposeGetCost( p, nLeftVars, nRightVars );        
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs one step of bi-decomposition.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Bdc_Type_t Bdc_DecomposeStep( Bdc_Man_t * p, Bdc_Isf_t * pIsf, Bdc_Isf_t * pIsfL, Bdc_Isf_t * pIsfR )
-{
-    int CostOr, CostAnd, CostOrL, CostOrR, CostAndL, CostAndR;
-
-    Bdc_IsfClean( p->pIsfOL );
-    Bdc_IsfClean( p->pIsfOR );
-    Bdc_IsfClean( p->pIsfAL );
-    Bdc_IsfClean( p->pIsfAR );
-
-    // perform OR decomposition
-    CostOr = Bdc_DecomposeOr( p, pIsf, p->pIsfOL, p->pIsfOR );
-
-    // perform AND decomposition
-    Bdc_IsfNot( pIsf );
-    CostAnd = Bdc_DecomposeOr( p, pIsf, p->pIsfAL, p->pIsfAR );
-    Bdc_IsfNot( pIsf );
-    Bdc_IsfNot( p->pIsfAL );
-    Bdc_IsfNot( p->pIsfAR );
-
-    // check the hash table
-    Bdc_SuppMinimize( p, p->pIsfOL );
-    CostOrL = (Bdc_TableLookup(p, p->pIsfOL) != NULL);
-    Bdc_SuppMinimize( p, p->pIsfOR );
-    CostOrR = (Bdc_TableLookup(p, p->pIsfOR) != NULL);
-    Bdc_SuppMinimize( p, p->pIsfAL );
-    CostAndL = (Bdc_TableLookup(p, p->pIsfAL) != NULL);
-    Bdc_SuppMinimize( p, p->pIsfAR );
-    CostAndR = (Bdc_TableLookup(p, p->pIsfAR) != NULL);
-
-    // check if there is any reuse for the components
-    if ( CostOrL + CostOrR < CostAndL + CostAndR )
-    {
-        Bdc_IsfCopy( pIsfL, p->pIsfOL );
-        Bdc_IsfCopy( pIsfR, p->pIsfOR );
-        return BDC_TYPE_OR;
-    }
-    if ( CostOrL + CostOrR > CostAndL + CostAndR )
-    {
-        Bdc_IsfCopy( pIsfL, p->pIsfAL );
-        Bdc_IsfCopy( pIsfR, p->pIsfAR );
-        return BDC_TYPE_AND; 
-    }
-
-    // compare the two-component costs
-    if ( CostOr < CostAnd )
-    {
-        Bdc_IsfCopy( pIsfL, p->pIsfOL );
-        Bdc_IsfCopy( pIsfR, p->pIsfOR );
-        return BDC_TYPE_OR;
-    }
-    return BDC_TYPE_AND;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/bdc/bdcInt.h b/src/aig/bdc/bdcInt.h
deleted file mode 100644
index 9649f870..00000000
--- a/src/aig/bdc/bdcInt.h
+++ /dev/null
@@ -1,150 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [bdcInt.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Truth-table-based bi-decomposition engine.]
-
-  Synopsis    [Internal declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - January 15, 2007.]
-
-  Revision    [$Id: resInt.h,v 1.00 2007/01/15 00:00:00 alanmi Exp $]
-
-***********************************************************************/
- 
-#ifndef __BDC_INT_H__
-#define __BDC_INT_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include "kit.h"
-#include "bdc.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-#define BDC_SCALE 100  // value used to compute the cost
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-// network types
-typedef enum { 
-    BDC_TYPE_NONE = 0,  // 0:  unknown
-    BDC_TYPE_CONST1,    // 1:  constant 1
-    BDC_TYPE_PI,        // 2:  primary input
-    BDC_TYPE_AND,       // 4:  AND-gate
-    BDC_TYPE_OR,        // 5:  OR-gate (temporary)
-    BDC_TYPE_XOR,       // 6:  XOR-gate
-    BDC_TYPE_MUX,       // 7:  MUX-gate
-    BDC_TYPE_OTHER      // 8:  unused
-} Bdc_Type_t;
-
-typedef struct Bdc_Fun_t_ Bdc_Fun_t;
-struct Bdc_Fun_t_
-{
-    int              Type;         // Const1, PI, AND, XOR, MUX
-    Bdc_Fun_t *      pFan0;        // fanin of the given node
-    Bdc_Fun_t *      pFan1;        // fanin of the given node
-    Bdc_Fun_t *      pFan2;        // fanin of the given node
-    unsigned         uSupp;        // bit mask of current support
-    unsigned *       puFunc;       // the function of the node
-    Bdc_Fun_t *      pNext;        // next function with same support
-    void *           pCopy;        // the copy field
-};
-
-typedef struct Bdc_Isf_t_ Bdc_Isf_t;
-struct Bdc_Isf_t_
-{
-    int              Var;          // the first variable assigned
-    unsigned         uSupp;        // the current support
-    unsigned *       puOn;         // on-set
-    unsigned *       puOff;        // off-set
-};
-
-struct Bdc_Man_t_
-{
-    // external parameters
-    Bdc_Par_t *      pPars;        // parameter set
-    int              nVars;        // the number of variables
-    int              nWords;       // the number of words 
-    int              nNodesLimit;  // the limit on the number of new nodes
-    int              nDivsLimit;   // the limit on the number of divisors
-    // internal nodes
-    Bdc_Fun_t *      pNodes;       // storage for decomposition nodes
-    int              nNodes;       // the number of nodes used
-    int              nNodesNew;    // the number of nodes used
-    int              nNodesAlloc;  // the number of nodes allocated  
-    Bdc_Fun_t *      pRoot;        // the root node
-    // resub candidates
-    Bdc_Fun_t **     pTable;       // hash table of candidates
-    int              nTableSize;   // hash table size (1 << nVarsMax)
-    Vec_Int_t *      vSpots;       // the occupied spots in the table
-    // elementary truth tables 
-    Vec_Ptr_t *      vTruths;      // for const 1 and elementary variables
-    unsigned *       puTemp1;      // temporary truth table
-    unsigned *       puTemp2;      // temporary truth table
-    unsigned *       puTemp3;      // temporary truth table
-    unsigned *       puTemp4;      // temporary truth table
-    // temporary ISFs
-    Bdc_Isf_t * pIsfOL, IsfOL;
-    Bdc_Isf_t * pIsfOR, IsfOR;
-    Bdc_Isf_t * pIsfAL, IsfAL;
-    Bdc_Isf_t * pIsfAR, IsfAR;
-    // internal memory manager
-    Vec_Int_t *      vMemory;      // memory for internal truth tables
-};
-
-// working with complemented attributes of objects
-static inline int         Bdc_IsComplement( Bdc_Fun_t * p )             { return (int)((unsigned long)p & (unsigned long)01);              }
-static inline Bdc_Fun_t * Bdc_Regular( Bdc_Fun_t * p )                  { return (Bdc_Fun_t *)((unsigned long)p & ~(unsigned long)01);     }
-static inline Bdc_Fun_t * Bdc_Not( Bdc_Fun_t * p )                      { return (Bdc_Fun_t *)((unsigned long)p ^  (unsigned long)01);     }
-static inline Bdc_Fun_t * Bdc_NotCond( Bdc_Fun_t * p, int c )           { return (Bdc_Fun_t *)((unsigned long)p ^  (unsigned long)(c!=0)); }
-
-static inline Bdc_Fun_t * Bdc_FunNew( Bdc_Man_t * p )                   { Bdc_Fun_t * pRes; if ( p->nNodes == p->nNodesLimit ) return NULL; pRes = p->pNodes + p->nNodes++; memset( pRes, 0, sizeof(Bdc_Fun_t) ); p->nNodesNew++; return pRes; }
-static inline void        Bdc_IsfStart( Bdc_Man_t * p, Bdc_Isf_t * pF ) { pF->puOn = Vec_IntFetch( p->vMemory, p->nWords ); pF->puOff = Vec_IntFetch( p->vMemory, p->nWords ); }
-static inline void        Bdc_IsfClean( Bdc_Isf_t * p )                 { p->uSupp = 0; p->Var = 0;                                        }
-static inline void        Bdc_IsfCopy( Bdc_Isf_t * p, Bdc_Isf_t * q )   { Bdc_Isf_t T = *p; *p = *q; *q = T;                               }
-static inline void        Bdc_IsfNot( Bdc_Isf_t * p )                   { unsigned * puT = p->puOn; p->puOn = p->puOff; p->puOff = puT;    }
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== bdcDec.c ==========================================================*/
-extern Bdc_Fun_t *      Bdc_ManDecompose_rec( Bdc_Man_t * p, Bdc_Isf_t * pIsf );
-/*=== bdcTable.c ==========================================================*/
-extern Bdc_Fun_t *      Bdc_TableLookup( Bdc_Man_t * p, Bdc_Isf_t * pIsf );
-extern void             Bdc_TableAdd( Bdc_Man_t * p, Bdc_Fun_t * pFunc );
-extern void             Bdc_TableClear( Bdc_Man_t * p );
-extern void             Bdc_SuppMinimize( Bdc_Man_t * p, Bdc_Isf_t * pIsf );
-extern int              Bdc_TableCheckContainment( Bdc_Man_t * p, Bdc_Isf_t * pIsf, unsigned * puTruth );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/bdc/bdcTable.c b/src/aig/bdc/bdcTable.c
deleted file mode 100644
index d86a938d..00000000
--- a/src/aig/bdc/bdcTable.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [bdcTable.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Truth-table-based bi-decomposition engine.]
-
-  Synopsis    [Hash table for intermediate nodes.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - January 30, 2007.]
-
-  Revision    [$Id: bdcTable.c,v 1.00 2007/01/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "bdcInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Minimizes the support of the ISF.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Bdc_SuppMinimize( Bdc_Man_t * p, Bdc_Isf_t * pIsf )
-{
-    int v;
-    // go through the support variables
-    for ( v = 0; v < p->nVars; v++ )
-    {
-        if ( (pIsf->uSupp & (1 << v)) == 0 )
-            continue;
-        Kit_TruthExistNew( p->puTemp1, pIsf->puOn, p->nVars, v );
-        Kit_TruthExistNew( p->puTemp2, pIsf->puOff, p->nVars, v );
-        if ( !Kit_TruthIsDisjoint( p->puTemp1, p->puTemp2, p->nVars ) )
-            continue;
-        // remove the variable
-        Kit_TruthCopy( pIsf->puOn, p->puTemp1, p->nVars );
-        Kit_TruthCopy( pIsf->puOff, p->puTemp2, p->nVars );
-        pIsf->uSupp &= ~(1 << v);
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks containment of the function in the ISF.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Bdc_TableCheckContainment( Bdc_Man_t * p, Bdc_Isf_t * pIsf, unsigned * puTruth )
-{
-    return Kit_TruthIsImply( pIsf->puOn, puTruth, p->nVars ) &&
-         Kit_TruthIsDisjoint( pIsf->puOff, puTruth, p->nVars );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds the new entry to the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Bdc_Fun_t * Bdc_TableLookup( Bdc_Man_t * p, Bdc_Isf_t * pIsf )
-{
-    Bdc_Fun_t * pFunc;
-    for ( pFunc = p->pTable[pIsf->uSupp]; pFunc; pFunc = pFunc->pNext )
-        if ( Bdc_TableCheckContainment( p, pIsf, pFunc->puFunc ) )
-             return pFunc;
-    return NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds the new entry to the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Bdc_TableAdd( Bdc_Man_t * p, Bdc_Fun_t * pFunc )
-{
-    if ( p->pTable[pFunc->uSupp] == NULL )
-        Vec_IntPush( p->vSpots, pFunc->uSupp );
-    pFunc->pNext = p->pTable[pFunc->uSupp];
-    p->pTable[pFunc->uSupp] = pFunc;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds the new entry to the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Bdc_TableClear( Bdc_Man_t * p )
-{
-    int Spot, i;
-    Vec_IntForEachEntry( p->vSpots, Spot, i )
-        p->pTable[Spot] = NULL;
-    Vec_IntClear( p->vSpots );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/bdc/bdc_.c b/src/aig/bdc/bdc_.c
deleted file mode 100644
index 9d0a9462..00000000
--- a/src/aig/bdc/bdc_.c
+++ /dev/null
@@ -1,49 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [bdc_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Truth-table-based bi-decomposition engine.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - January 30, 2007.]
-
-  Revision    [$Id: bdc_.c,v 1.00 2007/01/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "bdcInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/bdc/module.make b/src/aig/bdc/module.make
deleted file mode 100644
index 8697c998..00000000
--- a/src/aig/bdc/module.make
+++ /dev/null
@@ -1,4 +0,0 @@
-SRC +=  src/aig/bdc/bdcCore.c \
-    src/aig/bdc/bdcDec.c \
-    src/aig/bdc/bdcTable.c
-
diff --git a/src/aig/cnf/cnf.h b/src/aig/cnf/cnf.h
deleted file mode 100644
index 5c7a594e..00000000
--- a/src/aig/cnf/cnf.h
+++ /dev/null
@@ -1,162 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnf.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnf.h,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
- 
-#ifndef __CNF_H__
-#define __CNF_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-
-#include "vec.h"
-#include "aig.h"
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Cnf_Man_t_            Cnf_Man_t;
-typedef struct Cnf_Dat_t_            Cnf_Dat_t;
-typedef struct Cnf_Cut_t_            Cnf_Cut_t;
-
-// the CNF asserting outputs of AIG to be 1
-struct Cnf_Dat_t_
-{
-    Aig_Man_t *     pMan;            // the AIG manager, for which CNF is computed
-    int             nVars;           // the number of variables
-    int             nLiterals;       // the number of CNF literals
-    int             nClauses;        // the number of CNF clauses
-    int **          pClauses;        // the CNF clauses
-    int *           pVarNums;        // the number of CNF variable for each node ID (-1 if unused)
-};
-
-// the cut used to represent node in the AIG
-struct Cnf_Cut_t_
-{
-    char            nFanins;         // the number of leaves
-    char            Cost;            // the cost of this cut
-    short           nWords;          // the number of words in truth table
-    Vec_Int_t *     vIsop[2];        // neg/pos ISOPs
-    int             pFanins[0];      // the fanins (followed by the truth table)
-};
-
-// the CNF computation manager
-struct Cnf_Man_t_
-{
-    Aig_Man_t *     pManAig;         // the underlying AIG manager
-    char *          pSopSizes;       // sizes of SOPs for 4-variable functions
-    char **         pSops;           // the SOPs for 4-variable functions
-    int             aArea;           // the area of the mapping
-    Aig_MmFlex_t *  pMemCuts;        // memory manager for cuts
-    int             nMergeLimit;     // the limit on the size of merged cut
-    unsigned *      pTruths[4];      // temporary truth tables
-    Vec_Int_t *     vMemory;         // memory for intermediate ISOP representation
-    int             timeCuts; 
-    int             timeMap;
-    int             timeSave;
-};
-
-
-static inline Dar_Cut_t *  Dar_ObjBestCut( Aig_Obj_t * pObj ) { Dar_Cut_t * pCut; int i; Dar_ObjForEachCut( pObj, pCut, i ) if ( pCut->fBest ) return pCut; return NULL; }
-
-static inline int          Cnf_CutSopCost( Cnf_Man_t * p, Dar_Cut_t * pCut ) { return p->pSopSizes[pCut->uTruth] + p->pSopSizes[0xFFFF & ~pCut->uTruth]; }
-
-static inline int          Cnf_CutLeaveNum( Cnf_Cut_t * pCut )    { return pCut->nFanins;                               }
-static inline int *        Cnf_CutLeaves( Cnf_Cut_t * pCut )      { return pCut->pFanins;                               }
-static inline unsigned *   Cnf_CutTruth( Cnf_Cut_t * pCut )       { return (unsigned *)(pCut->pFanins + pCut->nFanins); }
-
-static inline Cnf_Cut_t *  Cnf_ObjBestCut( Aig_Obj_t * pObj )                       { return pObj->pData;  }
-static inline void         Cnf_ObjSetBestCut( Aig_Obj_t * pObj, Cnf_Cut_t * pCut )  { pObj->pData = pCut;  }
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                           ITERATORS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// iterator over leaves of the cut
-#define Cnf_CutForEachLeaf( p, pCut, pLeaf, i )                         \
-    for ( i = 0; (i < (int)(pCut)->nFanins) && ((pLeaf) = Aig_ManObj(p, (pCut)->pFanins[i])); i++ )
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== cnfCore.c ========================================================*/
-extern Cnf_Dat_t *     Cnf_Derive( Aig_Man_t * pAig, int nOutputs );
-extern Cnf_Man_t *     Cnf_ManRead();
-extern void            Cnf_ClearMemory();
-/*=== cnfCut.c ========================================================*/
-extern Cnf_Cut_t *     Cnf_CutCreate( Cnf_Man_t * p, Aig_Obj_t * pObj );
-extern void            Cnf_CutPrint( Cnf_Cut_t * pCut );
-extern void            Cnf_CutFree( Cnf_Cut_t * pCut );
-extern void            Cnf_CutUpdateRefs( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, Cnf_Cut_t * pCutRes );
-extern Cnf_Cut_t *     Cnf_CutCompose( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, int iFan );
-/*=== cnfData.c ========================================================*/
-extern void            Cnf_ReadMsops( char ** ppSopSizes, char *** ppSops );
-/*=== cnfMan.c ========================================================*/
-extern Cnf_Man_t *     Cnf_ManStart();
-extern void            Cnf_ManStop( Cnf_Man_t * p );
-extern Vec_Int_t *     Cnf_DataCollectPiSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p );
-extern void            Cnf_DataFree( Cnf_Dat_t * p );
-extern void            Cnf_DataWriteIntoFile( Cnf_Dat_t * p, char * pFileName, int fReadable );
-void *                 Cnf_DataWriteIntoSolver( Cnf_Dat_t * p );
-/*=== cnfMap.c ========================================================*/
-extern void            Cnf_DeriveMapping( Cnf_Man_t * p );
-extern int             Cnf_ManMapForCnf( Cnf_Man_t * p );
-/*=== cnfPost.c ========================================================*/
-extern void            Cnf_ManTransferCuts( Cnf_Man_t * p );
-extern void            Cnf_ManFreeCuts( Cnf_Man_t * p );
-extern void            Cnf_ManPostprocess( Cnf_Man_t * p );
-/*=== cnfUtil.c ========================================================*/
-extern Vec_Ptr_t *     Aig_ManScanMapping( Cnf_Man_t * p, int fCollect );
-extern Vec_Ptr_t *     Cnf_ManScanMapping( Cnf_Man_t * p, int fCollect, int fPreorder );
-/*=== cnfWrite.c ========================================================*/
-extern void            Cnf_SopConvertToVector( char * pSop, int nCubes, Vec_Int_t * vCover );
-extern Cnf_Dat_t *     Cnf_ManWriteCnf( Cnf_Man_t * p, Vec_Ptr_t * vMapped, int nOutputs );
-extern Cnf_Dat_t *     Cnf_DeriveSimple( Aig_Man_t * p, int nOutputs );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/cnf/cnfCore.c b/src/aig/cnf/cnfCore.c
deleted file mode 100644
index 06731451..00000000
--- a/src/aig/cnf/cnfCore.c
+++ /dev/null
@@ -1,185 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnfCore.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG-to-CNF conversion.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnfCore.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cnf.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static Cnf_Man_t * s_pManCnf = NULL;
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Converts AIG into the SAT solver.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Cnf_Dat_t * Cnf_Derive( Aig_Man_t * pAig, int nOutputs )
-{
-    Cnf_Man_t * p;
-    Cnf_Dat_t * pCnf;
-    Vec_Ptr_t * vMapped;
-    Aig_MmFixed_t * pMemCuts;
-    int clk;
-    // allocate the CNF manager
-    if ( s_pManCnf == NULL )
-        s_pManCnf = Cnf_ManStart();
-    // connect the managers
-    p = s_pManCnf;
-    p->pManAig = pAig;
-
-    // generate cuts for all nodes, assign cost, and find best cuts
-clk = clock();
-    pMemCuts = Dar_ManComputeCuts( pAig, 10 );
-p->timeCuts = clock() - clk;
-
-    // find the mapping
-clk = clock();
-    Cnf_DeriveMapping( p );
-p->timeMap = clock() - clk;
-//    Aig_ManScanMapping( p, 1 );
-
-    // convert it into CNF
-clk = clock();
-    Cnf_ManTransferCuts( p );
-    vMapped = Cnf_ManScanMapping( p, 1, 1 );
-    pCnf = Cnf_ManWriteCnf( p, vMapped, nOutputs );
-    Vec_PtrFree( vMapped );
-    Aig_MmFixedStop( pMemCuts, 0 );
-p->timeSave = clock() - clk;
-
-   // reset reference counters
-    Aig_ManResetRefs( pAig );
-//PRT( "Cuts   ", p->timeCuts );
-//PRT( "Map    ", p->timeMap  );
-//PRT( "Saving ", p->timeSave );
-    return pCnf;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Cnf_Man_t * Cnf_ManRead()
-{
-    return s_pManCnf;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_ClearMemory()
-{
-    if ( s_pManCnf == NULL )
-        return;
-    Cnf_ManStop( s_pManCnf );
-    s_pManCnf = NULL;
-}
-
-
-#if 0
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Cnf_Dat_t * Cnf_Derive_old( Aig_Man_t * pAig )
-{
-/*
-    // iteratively improve area flow
-    for ( i = 0; i < nIters; i++ )
-    {
-clk = clock();
-        Cnf_ManScanMapping( p, 0 );
-        Cnf_ManMapForCnf( p );
-PRT( "iter ", clock() - clk );
-    }
-*/
-    // write the file
-    vMapped = Aig_ManScanMapping( p, 1 );
-    Vec_PtrFree( vMapped );
-
-clk = clock();
-    Cnf_ManTransferCuts( p );
-
-    Cnf_ManPostprocess( p );
-    Cnf_ManScanMapping( p, 0 );
-/*
-    Cnf_ManPostprocess( p );
-    Cnf_ManScanMapping( p, 0 );
-    Cnf_ManPostprocess( p );
-    Cnf_ManScanMapping( p, 0 );
-*/
-PRT( "Ext ", clock() - clk );
-
-/*
-    vMapped = Cnf_ManScanMapping( p, 1 );
-    pCnf = Cnf_ManWriteCnf( p, vMapped );
-    Vec_PtrFree( vMapped );
-
-    // clean up
-    Cnf_ManFreeCuts( p );
-    Dar_ManCutsFree( pAig );
-    return pCnf;
-*/
-    Aig_MmFixedStop( pMemCuts, 0 );
-    return NULL;
-}
-
-#endif
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/cnf/cnfCut.c b/src/aig/cnf/cnfCut.c
deleted file mode 100644
index 17ab0c78..00000000
--- a/src/aig/cnf/cnfCut.c
+++ /dev/null
@@ -1,371 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnfCut.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG-to-CNF conversion.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnfCut.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cnf.h"
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates cut of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Cnf_Cut_t * Cnf_CutAlloc( Cnf_Man_t * p, int nLeaves )
-{
-    Cnf_Cut_t * pCut;
-    int nSize = sizeof(Cnf_Cut_t) + sizeof(int) * nLeaves + sizeof(unsigned) * Aig_TruthWordNum(nLeaves);
-    pCut = (Cnf_Cut_t *)Aig_MmFlexEntryFetch( p->pMemCuts, nSize );
-    pCut->nFanins = nLeaves;
-    pCut->nWords = Aig_TruthWordNum(nLeaves);
-    pCut->vIsop[0] = pCut->vIsop[1] = NULL;
-    return pCut;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deallocates cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_CutFree( Cnf_Cut_t * pCut )
-{
-    if ( pCut->vIsop[0] )
-        Vec_IntFree( pCut->vIsop[0] );
-    if ( pCut->vIsop[1] )
-        Vec_IntFree( pCut->vIsop[1] );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates cut for the given node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Cnf_Cut_t * Cnf_CutCreate( Cnf_Man_t * p, Aig_Obj_t * pObj )
-{
-    Dar_Cut_t * pCutBest;
-    Cnf_Cut_t * pCut;
-    unsigned * pTruth;
-    assert( Aig_ObjIsNode(pObj) );
-    pCutBest = Dar_ObjBestCut( pObj );
-    assert( pCutBest != NULL );
-    assert( pCutBest->nLeaves <= 4 );
-    pCut = Cnf_CutAlloc( p, pCutBest->nLeaves );
-    memcpy( pCut->pFanins, pCutBest->pLeaves, sizeof(int) * pCutBest->nLeaves );
-    pTruth = Cnf_CutTruth(pCut);
-    *pTruth = (pCutBest->uTruth << 16) | pCutBest->uTruth;
-    pCut->Cost = Cnf_CutSopCost( p, pCutBest );
-    return pCut;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deallocates cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_CutPrint( Cnf_Cut_t * pCut )
-{
-    int i;
-    printf( "{" );
-    for ( i = 0; i < pCut->nFanins; i++ )
-        printf( "%d ", pCut->pFanins[i] );
-    printf( " } " );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates cut of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_CutDeref( Cnf_Man_t * p, Cnf_Cut_t * pCut )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Cnf_CutForEachLeaf( p->pManAig, pCut, pObj, i )
-    {
-        assert( pObj->nRefs > 0 );
-        pObj->nRefs--;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates cut of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_CutRef( Cnf_Man_t * p, Cnf_Cut_t * pCut )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Cnf_CutForEachLeaf( p->pManAig, pCut, pObj, i )
-    {
-        pObj->nRefs++;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates cut of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_CutUpdateRefs( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, Cnf_Cut_t * pCutRes )
-{
-    Cnf_CutDeref( p, pCut );
-    Cnf_CutDeref( p, pCutFan );
-    Cnf_CutRef( p, pCutRes );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Merges two arrays of integers.]
-
-  Description [Returns the number of items.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Cnf_CutMergeLeaves( Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, int * pFanins )
-{
-    int i, k, nFanins = 0;
-    for ( i = k = 0; i < pCut->nFanins && k < pCutFan->nFanins; )
-    {
-        if ( pCut->pFanins[i] == pCutFan->pFanins[k] )
-            pFanins[nFanins++] = pCut->pFanins[i], i++, k++;
-        else if ( pCut->pFanins[i] < pCutFan->pFanins[k] )
-            pFanins[nFanins++] = pCut->pFanins[i], i++;
-        else
-            pFanins[nFanins++] = pCutFan->pFanins[k], k++;
-    }
-    for ( ; i < pCut->nFanins; i++ )
-        pFanins[nFanins++] = pCut->pFanins[i];
-    for ( ; k < pCutFan->nFanins; k++ )
-        pFanins[nFanins++] = pCutFan->pFanins[k];
-    return nFanins;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the stretching phase of the cut w.r.t. the merged cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Cnf_TruthPhase( Cnf_Cut_t * pCut, Cnf_Cut_t * pCut1 )
-{
-    unsigned uPhase = 0;
-    int i, k;
-    for ( i = k = 0; i < pCut->nFanins; i++ )
-    {
-        if ( k == pCut1->nFanins )
-            break;
-        if ( pCut->pFanins[i] < pCut1->pFanins[k] )
-            continue;
-        assert( pCut->pFanins[i] == pCut1->pFanins[k] );
-        uPhase |= (1 << i);
-        k++;
-    }
-    return uPhase;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes the fanin variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_CutRemoveIthVar( Cnf_Cut_t * pCut, int iVar, int iFan )
-{
-    int i;
-    assert( pCut->pFanins[iVar] == iFan );
-    pCut->nFanins--;
-    for ( i = iVar; i < pCut->nFanins; i++ )
-        pCut->pFanins[i] = pCut->pFanins[i+1];
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts the fanin variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_CutInsertIthVar( Cnf_Cut_t * pCut, int iVar, int iFan )
-{
-    int i;
-    for ( i = pCut->nFanins; i > iVar; i-- )
-        pCut->pFanins[i] = pCut->pFanins[i-1];
-    pCut->pFanins[iVar] = iFan;
-    pCut->nFanins++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Merges two cuts.]
-
-  Description [Returns NULL of the cuts cannot be merged.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Cnf_Cut_t * Cnf_CutCompose( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, int iFan )
-{
-    Cnf_Cut_t * pCutRes;
-    static int pFanins[32];
-    unsigned * pTruth, * pTruthFan, * pTruthRes;
-    unsigned * pTop = p->pTruths[0], * pFan = p->pTruths[2], * pTemp = p->pTruths[3];
-    unsigned uPhase, uPhaseFan;
-    int i, iVar, nFanins, RetValue;
-
-    // make sure the second cut is the fanin of the first
-    for ( iVar = 0; iVar < pCut->nFanins; iVar++ )
-        if ( pCut->pFanins[iVar] == iFan )
-            break;
-    assert( iVar < pCut->nFanins );
-    // remove this variable
-    Cnf_CutRemoveIthVar( pCut, iVar, iFan );
-    // merge leaves of the cuts
-    nFanins = Cnf_CutMergeLeaves( pCut, pCutFan, pFanins );
-    if ( nFanins+1 > p->nMergeLimit )
-    {
-        Cnf_CutInsertIthVar( pCut, iVar, iFan );
-        return NULL;
-    }
-    // create new cut
-    pCutRes = Cnf_CutAlloc( p, nFanins );
-    memcpy( pCutRes->pFanins, pFanins, sizeof(int) * nFanins );
-    assert( pCutRes->nFanins <= pCut->nFanins + pCutFan->nFanins );
-
-    // derive its truth table
-    // get the truth tables in the composition space
-    pTruth    = Cnf_CutTruth(pCut);
-    pTruthFan = Cnf_CutTruth(pCutFan);
-    pTruthRes = Cnf_CutTruth(pCutRes);
-    for ( i = 0; i < 2*pCutRes->nWords; i++ )
-        pTop[i] = pTruth[i % pCut->nWords];
-    for ( i = 0; i < pCutRes->nWords; i++ )
-        pFan[i] = pTruthFan[i % pCutFan->nWords];
-    // move the variable to the end
-    uPhase = Kit_BitMask( pCutRes->nFanins+1 ) & ~(1 << iVar);
-    Kit_TruthShrink( pTemp, pTop, pCutRes->nFanins, pCutRes->nFanins+1, uPhase, 1 );
-    // compute the phases
-    uPhase    = Cnf_TruthPhase( pCutRes, pCut    ) | (1 << pCutRes->nFanins);
-    uPhaseFan = Cnf_TruthPhase( pCutRes, pCutFan );
-    // permute truth-tables to the common support
-    Kit_TruthStretch( pTemp, pTop, pCut->nFanins+1,  pCutRes->nFanins+1, uPhase,    1 );
-    Kit_TruthStretch( pTemp, pFan, pCutFan->nFanins, pCutRes->nFanins,   uPhaseFan, 1 );
-    // perform Boolean operation
-    Kit_TruthMux( pTruthRes, pTop, pTop+pCutRes->nWords, pFan, pCutRes->nFanins );
-    // return the cut to its original condition
-    Cnf_CutInsertIthVar( pCut, iVar, iFan );
-    // consider the simple case
-    if ( pCutRes->nFanins < 5 )
-    {
-        pCutRes->Cost = p->pSopSizes[0xFFFF & *pTruthRes] + p->pSopSizes[0xFFFF & ~*pTruthRes];
-        return pCutRes;
-    }
-
-    // derive ISOP for positive phase
-    RetValue = Kit_TruthIsop( pTruthRes, pCutRes->nFanins, p->vMemory, 0 );
-    pCutRes->vIsop[1] = (RetValue == -1)? NULL : Vec_IntDup( p->vMemory );
-    // derive ISOP for negative phase
-    Kit_TruthNot( pTruthRes, pTruthRes, pCutRes->nFanins );
-    RetValue = Kit_TruthIsop( pTruthRes, pCutRes->nFanins, p->vMemory, 0 );
-    pCutRes->vIsop[0] = (RetValue == -1)? NULL : Vec_IntDup( p->vMemory );
-    Kit_TruthNot( pTruthRes, pTruthRes, pCutRes->nFanins );
-
-    // compute the cut cost
-    if ( pCutRes->vIsop[0] == NULL || pCutRes->vIsop[1] == NULL )
-        pCutRes->Cost = 127;
-    else if ( Vec_IntSize(pCutRes->vIsop[0]) + Vec_IntSize(pCutRes->vIsop[1]) > 127 )
-        pCutRes->Cost = 127;
-    else
-        pCutRes->Cost = Vec_IntSize(pCutRes->vIsop[0]) + Vec_IntSize(pCutRes->vIsop[1]);
-    return pCutRes;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/cnf/cnfData.c b/src/aig/cnf/cnfData.c
deleted file mode 100644
index 7b8be51e..00000000
--- a/src/aig/cnf/cnfData.c
+++ /dev/null
@@ -1,4784 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnfData.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG-to-CNF conversion.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnfData.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cnf.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static char s_Data3[81] = "!#&()*+,-.0123456789:;<=>?ABCDEFGHIJKLMNOPQRSTUVWXYZ[]abcdefghijklmnopqrstuvwxyz|";
-
-static char * s_Data4[] = {
-"! B a . 8 .B 8a K !K T Ta j 8j Tj s ( + (B +a (. +8 .B( +8a (K +K T( +T j( ",
-"+j Tj( s+ E !E H Ha E. 8E H. H8 EK EK! HT HTa jE 8jE Hj sH d +d Hd g d. 8d ",
-"Hd. g8 dK +dK Td gT dj +jd Hjd gs 2 !2 2B a2 5 58 5B 5a 2K 2K! T2 Ta2 5j 58",
-"j 5T s5 ; +; ;B a; 5; > 5;B >a ;K +;K T; +T; ;j >j 5T; s> E2 !E2 H2 Ha2 5E ",
-"58E H5 H58 EK2 !E2K HT2 TaH2 5jE 8j5E H5T sH5 d; +d; H; g; 5d >d H5d g> dK;",
-" dK+; H;T gT; 5dj >jd H;j gs> N !N NB aN N. 8N .BN 8aN Q Q! QT Qa Qj Q8 QTj",
-" sQ (N +N (BN +aN N.( +8N (BN. 8a+N Q( +Q QT( +QT Qj( +Q8 TjQ( s+Q W W! HW ",
-"Wa W. W8 HW. H8W WQ Q!W Z Za Wj W8Q Zj sZ Wd +W HWd gW Wd. +W8 WdH. gW8 Qd ",
-"+WQ Zd gZ Wjd +Wj Zdj gZs m m! mB am 5m 8m 5mB 5am Qm Q!m Tm Qam p p8 pT sp",
-" m; +m m;B +ma 5m; >m m;5B >ma Q; +Qm Q;T +Tm p; p> pT; sp> Wm W!m Hm Hma 5",
-"W 5W8 H5W H8m WQm WmQ! Zm Zam pW pW8 Zp sZp v v+ vH gv v5 v> vH5 gv> vQ v+Q",
-" Zv gZv pv pv> Zpv y # & #B a& #. 8& .B# 8a& #K &K T# T& j# &j Tj# s& #( +&",
-" #B( +a& #(. +8& #(.B 8a+& #(K +&K T#( +T& j#( +j& j#T( s+& #E &E H# H& #E.",
-" 8&E H#. H8& EK# &EK HT# H&T j#E &jE Hj# sH& d# d& Hd# g& d#. 8d& d#H. g8& ",
-"dK# d&K Td# gT& dj# d&j H#dj gs& #2 &2 2B# a&2 5# 5& 5B# 5a& 2K# &2K T#2 T&",
-"2 5j# 5&j 5T# s5& ;# ;& ;#B a;& 5;# >& ;#5B >&a ;#K ;&K T;# T;& ;j# >&j 5#T",
-"; s>& #E2 &E2 H#2 H&2 5#E 5&E H5# H5& #E2K EK&2 T#H2 H2T& j#5E 5E&j H#5T H5",
-"s& d;# d&; H;# g;& 5d# >&d H#5d g>& ;#dK dK;& H#T; T;g& 5#dj d&>j H#;j >&gs",
-" #N &N #BN a&N N.# 8&N #BN. aN8& Q# Q& QT# Qa& Qj# Q8& TjQ# sQ& #(N +&N #(N",
-"B a&+N #(N. 8&+N .BN#( +8a&N Q#( +Q& T#Q( Q&+T j#Q( Q&+j QTj#( +Qs& W# W& H",
-"W# H&W W#. W8& W#H. W8H& WQ# W&Q Z# Z& Wj# W&j Zj# sZ& Wd# +W& WdH# gW& d#W",
-". 8dW& HWd#. W8g& Qd# Qd& Zd# gZ& W#dj W&+j djZ# Z&gs m# m& m#B am& 5m# 5&m",
-" m#5B am5& Qm# Q&m Tm# Tm& p# p& pT# sp& m;# +m& ;#mB m&a; m;5# >m& 5m;#B a",
-"m>& Q;# Q;& Q#T; T;Q& p;# p>& T;p# p&s> Wm# W&m Hm# Hm& 5W# 5W& H#5W 5WH& Q",
-"mW# WQm& Zm# Z&m pW# p&W Zp# Zp& v# v& vH# gv& v5# v>& H5v# v&g> vQ# v&Q Zv",
-"# Zv& pv# pv& Z#pv y& C !C D Da C. 8C D. D8 CK CK! DT DTa jC 8jC Dj sD C( +",
-"C D( +D C(. +8C D(. +D8 CK( +CK DT( +DT jC( +jC Dj( s+D CE !CE HD HDa CE. 8",
-"CE HD. H8D EKC !CEK HDT DTHa jCE jC8E HjD sHD dC +dC Dd gD dC. 8dC Dd. gD8 ",
-"dKC dK+C DdT gDT djC +Cdj Ddj gsD C2 !C2 D2 Da2 5C 58C 5D 5D8 2KC !C2K DT2 ",
-"T2Da 5jC 8j5C 5DT s5D ;C +;C D; +D; 5;C >C 5D; >D ;CK ;C+K D;T D;+T ;jC >jC",
-" D;j s>D CE2 CE!2 HD2 H2Da 5CE 8C5E H5D 5DH8 CE2K !E2CK H2DT HDTa2 jC5E 58j",
-"CE 5DHj H5sD d;C d;+C H;D gD; 5dC >Cd 5Dd g>D ;CdK +d;CK TdD; D;gT 5Cdj dj>",
-"C Dd5T >Dgs CN !CN DN DaN N.C 8CN DN. D8N QC Q!C QD QDa QjC Q8C QDj sQD C(N",
-" +CN D(N +DN C(N. 8C+N N.D( +ND8 QC( +QC QD( +QD jCQ( +CQ8 Q(Dj +QsD WC W!C",
-" WD WDa WC. W8C WD. WD8 WQC WCQ! ZD ZDa WjC WCQ8 ZDj sZD WdC +WC WDd gWD dC",
-"W. +CW8 W.Dd WDg8 QdC +CQd ZDd gZD WCdj +CWj DdZj gDsZ mC mC! Dm Dma 5mC 8m",
-"C 5Dm D8m QmC mCQ! QDm DmQa pC p8C pD spD m;C +mC Dm; +Dm m;5C >mC 5mD; >Dm",
-" Q;C +CQ; QD; QD+m p;C p>C pD; p>D WmC mCW! HmD DmWa 5WC 5CW8 5WD WD5a QmWC",
-" Q!WmC ZDm DmZa pWC W8pC ZpD pDsZ vC v+C vD gvD v5C v>C vD5 v>D vQC +QvC Zv",
-"D vDgZ pvC >Cpv pvD yD b b& bD c b. b8 bD. c8 bK bK& bT cT bj b8j bTj sc b(",
-" b+ bD( c+ b(. b+8 D(b. c+8 bK( b+K bT( c+T bj( b+j b(Dj sc+ bE b&E bH cH b",
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-"D cp= 4b,W <m&bW 4W,D ,4cW 5Wb< ,4Wb8 ,4W5D 5Wc< ,4WbQ bW<4Q& ,4Zb c4Z< bWp",
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-" pv=b -pv=b Zp=b yc= 6< 6!< 6<B 6a< 1< 68< 1<B 1a< 6<K <K6! 6T< T<6a 6j< 8<",
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-" 7T< 7s< =6 =6+ =B6 =a6 7= 7>= 7=B =a7 =6K 6+=K =T6 6+=T =j7 7>=j =T7 s=7 6",
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-"j 7H=T s=g7 6<N <N6! <N6B 6Na< 1<N 6N8< <N1B 1Na< 6Q< 6!Q< Q<6T Q<6a 1Q< Q8",
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-"=7 A =B7? Aa ?=K =K?- =T? ?-=T =j? Aj ?T=j As ?4E 4&?E ?H4 4H?a 7?E ?E7: ?H",
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-"2B 0Oa2 15O 581O 5B1O 1O5a 0O2K 2K0!O 0OT2 Ta0O2 15jO jO158 1O5T 15sO ;0O ;",
-"0+O 0B;O ;0aO 1;O >O1 ;O1B 1a>O 0O;K +;0OK ;0TO a;0TO jO1; jO>1 1OT; s1>O 0",
-"OE2 !EO02 0OH2 Ha0O2 5E1O 158EO 1OH5 1H58O EK0O2 2K0!EO HT0O2 Ta0HO2 jO15E ",
-"158jOE 1H5jO s1H5O ;0dO +d;0O ;0HO ;0gO 1O5d 1d>O 1OH; >Og1 dK;0O dK;+0O H;",
-"T0O gT;0O djO1; >j1dO 1H;jO gs>1O P0 P0! P0B aP0 1P 1P8 1PB 1aP QP0 P0Q! TP",
-"0 Q0aP 1QP Q81P 1TP sP1 P0( +P0 0BP( +0aP 1P( 1+P P(1B +P1a P0Q( QP+0 P0T( ",
-"+0TP 1(Pj +Q1P 1(TP 1+sP WP0 P0W! HP0 H0aP 1WP W81P 1HP H81P QPW0 Q!WP0 ZP0",
-" aPZ0 Wj1P 1WQ8P Z1P Z1sP dP0 +0dP H0dP gP0 1dP +W1P HP1d g1P Q0dP dP0+Q dP",
-"Z0 ZPg0 Qd1P dPj1+ 1dZP sPg1 mP0 P!m0 P0mB mPa0 1mP 8m1P 1B5P 5a1P mPQ0 Q!m",
-"P0 mPT0 amPQ0 p1P 1Pp8 1TpP p1sP ;P0 +0;P PB;0 a0;P 1;P >P1 1B;P 1a>P Q0;P ",
-";P0+Q T0;P a;PQ0 1;pP p1>P T;1P s1>P mPW0 W!mP0 mPH0 amPH0 5W1P 1W58P H51P ",
-"1Hm8P WQmP0 WmPQ!0 mPZ0 ZamP0 1WpP p1W8P p1ZP sP1Zp vP0 +Pv0 HPv0 vPg0 v1P ",
-"v1>P 1HvP g1>P QPv0 v+QP0 vPZ0 ZvPg0 pPv1 >Ppv1 ZPv1 y1P 9O 9&O 9OB 9aO 91O",
-" :O 1B9O :aO 9OK &O9K 9TO 9OT& 9jO :jO jO9T s:O 9(O 9+O (B9O +a9O 1(9O :+O ",
-"91(OB +a:O (O9K +O9K T(9O 9O+T 9(jO +j:O 9T1(O :+sO 9EO &E9O 9HO 9OH& 1E9O ",
-":EO 9O1H :HO EK9O 9&EOK HT9O 9HTaO 9EjO jO:E jO9H sO:H 9dO 9Od& Hd9O g9O 9O",
-"1d :dO 9H1dO g:O dK9O d&O9K 9OTd 9TgO jO9d dj:O 9HjdO gOs: 9O2 &O92 2B9O aO",
-"92 95O :5O 5B9O 5a:O 2K9O 9&O2K TO92 9TaO2 jO95 jO:5 9O5T :5sO 9;O 9O;& ;O9",
-"B 9Oa; 9O1; :>O 95;OB :a>O ;O9K ;&O9K 9OT; 9+T;O jO9; :j>O 95T;O >Os: EO92 ",
-"9&EO2 HO92 9HaO2 5E9O 5E:O 9OH5 H5:O 9EO2K &EO92K 9HTO2 H&O9T2 95jEO :5jEO ",
-"9H5jO :H5sO d;9O d&;9O 9OH; 9;gO 9O5d >O:d 9H5dO >Og: 9d;OK 9dO;&K 9H;TO g9",
-"T;O 95djO :>djO 9H;jO g:s>O 9P 9P& 9PB 9aP 9P1 :P 1B9P :Pa 9QP Q&9P 9TP Qa9",
-"P 9Pj :QP 1T9P s:P 9P( 9+P P(9B +P9a 9(1P :P+ 9P1(B +P:a QP9( +Q9P 9(TP +T9",
-"P 9(Pj +Q:P 9TP1( s+:P 9WP W&9P 9HP HP9a 1W9P :WP 1H9P :HP WQ9P 9WQP& Z9P 9",
-"aZP Wj9P Wj:P 9PZ1 Z:P 9dP +W9P HP9d g9P 1d9P :dP 9HP1d g:P Qd9P dP&9Q 9dZP",
-" Z9gP dP9j Qd:P Z91dP gPZ: 9mP m&9P mP9B am9P 95P :mP 9B5P 5a:P Qm9P m&P9Q ",
-"Tm9P 9QamP p9P :pP 9TpP sP:p 9;P +m9P 9B;P a;9P 1;9P >P: 95P;B :a>P Q;9P ;P",
-"&9Q T;9P a;P9Q 9;pP >P:p p9T;P s:>P Wm9P m&P9W Hm9P 9HmaP 5W9P 5W:P H59P H5",
-":P 9WQmP 9WQm&P 9mZP Z9amP 9WpP pW:P ZPp9 :PZp v9P 9+vP 9HvP v9gP 95vP :vP ",
-"v91HP >Pg: 9QvP v9+QP ZPv9 Zv9gP pPv9 pv:P Zp9vP y:P C0O C0!O D0O a0DO 1CO ",
-"8C1O 1DO 1OD8 0OCK C0O!K T0DO DTa0O 1CjO jO18C jO1D 1DsO 0(CO C0+O 0(DO D0+",
-"O C(1O +C1O D(1O 1O+D C0O(K +C0OK DT0(O +DT0O jO1C( 1+jCO 1DT(O s1+DO E0CO ",
-"C0O!E D0HO HDa0O CE1O 18CEO HD1O 1HD8O C0OEK EK0!CO HDT0O DTaH0O jO1CE 18Cj",
-"OE 1HDjO s1HDO C0dO +dC0O d0DO D0gO dC1O 1+dCO 1ODd 1DgO dKC0O dKC+0O DdT0O",
-" gDT0O djC1O 1+CdjO 1DdjO gs1DO 0OC2 C02!O 0OD2 Da0O2 5C1O 158CO 1O5D 1D58O",
-" C02OK 2K0!CO DT0O2 Ta0DO2 jO15C 158jOC 1D5jO s15DO C0;O +;C0O ;0DO a;0DO ;",
-"C1O 1C>O 1OD; 1D>O ;C0OK ;C0+OK D;T0O D;0+TO ;jC1O >j1CO 1D;jO >DOs1 C02EO ",
-"!EOC02 HD0O2 Da0HO2 15CEO 58C1EO 1H5DO H5D1aO EK2C0O E02K!CO DT0HO2 DTH0aO2",
-" 15CjOE 5E1O8jC H5D1TO 1H5sDO d;C0O d;C+0O H;D0O gD;0O 1d5CO >C1dO 1H;DO >D",
-"Og1 ;C0dKO C0;O+dK Td0D;O D;Tg0O 1dC;jO djC>O1 djO1D; gs1>DO PC0 !CP0 DP0 D",
-"0aP 1PC 1C8P 1DP D81P PCQ0 Q!PC0 Q0DP aP0QD 1CPj PjC18 QD1P 1DsP C0P( PC+0 ",
-"P0D( +0DP PC1( 1C+P 1(DP +D1P QPC0( +QPC0 QDP0( +QDP0 PjC1( 1+QPC 1QDP( sP1",
-"+D PCW0 W!PC0 H0DP aP0WD WP1C 1W8PC HP1D 1HPD8 WQPC0 WPCQ!0 DPZ0 ZDaP0 PjC1",
-"W 1W8PjC 1DZP sP1ZD PCd0 dPC+0 D0dP DPg0 1CdP 1+WPC Dd1P 1DgP dPCQ0 +QCdP0 ",
-"ZDdP0 gZDP0 dPj1C dPC1+Q Z1DdP gZ1DP PCm0 mPC!0 mPD0 amPD0 1C5P 1m8PC 5D1P ",
-"1Dm8P QmPC0 mPCQ!0 QDmP0 QDmaP0 1PpC p18PC 1DpP sP1pD PC;0 ;PC+0 D0;P a;PD0",
-" 1C;P 1P>C D;1P 1D>P ;PCQ0 +QC;P0 QD;P0 aP0QD; p1;PC >Pp1C pD1;P >Ps1D WmPC",
-"0 mPCW!0 HmDP0 HmDaP0 1W5PC 5W81PC 1HmDP H8m1DP QmPWC0 QCW0mP! ZDmP0 amPZD0",
-" p1WPC 1W8pPC Zp1DP Zp1sPD PCv0 v+PC0 DPv0 gvDP0 1PvC >Pv1C 1DvP >Pg1D vQPC",
-"0 +QPvC0 ZvDP0 vDPgZ0 pv1PC pv1>PC Zv1DP 1DyP b9O 9&bO 9DO c9O b1O :bO bO1D",
-" :cO 9ObK b9&OK bO9T 9TcO jOb1 bj:O jO9D sO:c 9(bO bO9+ D(9O 9+cO 1(bO b+:O",
-" b1D(O c+:O b9(OK b+9OK bT9(O c9+TO b1j(O :b+jO b1T(O :c+sO 9EbO b9&EO bO9H",
-" 9HcO 1EbO bE:O bO1H cH:O b9EOK 9&EbKO bH9TO c9HTO b1jEO :bjEO b1HjO :cHsO ",
-"bO9d d&Ob9 9ODd c9gO bO1d bd:O b1HdO gO:c bd9OK 9+ObdK bTd9O gc9TO b1djO :d",
-"bjO b1TdO g:scO 9Ob2 b9&O2 DO92 9Oc2 bO95 b5:O 9O5D :Oc5 b9O2K 9&ObK2 bT9O2",
-" c29TO b15jO :b5jO b1T5O :c5sO bO9; ;&Ob9 9OD; 9;cO bO1; :b>O b1;DO >O:c b;",
-"9OK 9+Ob;K bT;9O c;9TO b1;jO :>bjO b1T;O c>s:O b9EO2 9&EbO2 bH9O2 c29HO b15",
-"EO :b5EO b1H5O :cH5O 9EObK2 EOb29&K 9HObT2 9HTc2O 95EbjO b5j:EO bHO95T s:Hc",
-"5O bd9;O bd9;&O bH;9O c;9gO b1d5O :>bdO b1H;O g:c>O 9dOb;K d&b;9OK bHO9T; g",
-"9Tc;O djOb1; >bj:dO djO95D c>sg:O bP9 b9P& 9DP cP9 b1P :Pb 1DbP :cP 9QbP bQ",
-"9P& 9TbP 9QcP 9Pbj bQ:P 1TbP :csP b(9P 9+bP 9(DP 9+cP b(1P b+:P b1PD( :+cP ",
-"bQ9P( b+Q9P bTP9( cQ9+P b1QP( :Qb+P b1TP( :cQ+P 9WbP bW9P& 9HbP 9HcP 1WbP b",
-"W:P 1HbP cW:P bW9QP 9WQbP& bPZ9 cPZ9 b1WPj :WbPj b1ZP :PZc 9dbP dP&b9 Dd9P ",
-"cPg9 1dbP bd:P b1HdP :cgP bQd9P 9+QbdP Zb9dP Zcg9P dPjb1 :QdbP Zb1dP g:PZc ",
-"9mbP m&Pb9 Dm9P 9mcP 95bP b5:P 5D9P c5:P bQ9mP bQ9m&P bTm9P cQ9mP b1pP pb:P",
-" 9DpP :Pcp 9;bP ;P&b9 D;9P 9;cP 1;bP >b:P b1;DP :c>P bQ;9P 9+Qb;P bT;9P cQ;",
-"9P pb9;P :p>bP p9D;P cp:>P bW9mP bW9m&P bHm9P cW9mP b1W5P :Wb5P b1H5P :cW5P",
-" 9WQbmP QmP&bW9 Zb9mP Zc9mP pb9WP :pbWP Zpb9P cpZ:P bPv9 vb9+P 9DvP v9cP b1",
-"vP vb:P vb1HP :Pcv vb9QP b+Qv9P Zvb9P cvZ9P pvb9P :vbpP Zvb1P :cyP R R! RB ",
-"Ra R. R8 R.B R8a RM RM! RT RTa Rj R8M RTj sR R( R+ R(B R+a R(. R+8 .BR( +8R",
-"a RM( R+M RT( R+T Rj( R+j TjR( sR+ RE RE! RH RHa RE. R8E RH. RH8 RME MER! R",
-"HT HMRa RjE RE8M RHj sRH Rd R+d RHd gR Rd. R8d HdR. gR8 RdM +MRd RTd gRT Rd",
-"j +jRd HjRd gsR R2 R2! R2B Ra2 R5 R58 R5B R5a RM2 M2R! RT2 R2aM R5M 5MR8 R5",
-"T sR5 R; R+; R;B Ra; R5; >R 5;RB >Ra R;M +MR; RT; +TR; R;j >MR 5TR; s>R RE2",
-" !ER2 RH2 HaR2 R5E 58RE RH5 H5R8 MER2 RME!2 R2HM aM2RH RE5M R58ME H5RT RHs5",
-" Rd; +dR; RH; gR; R5d >Rd H5Rd g>R dMR; dM;R+ HMR; RTg; 5dRj Rd>M H;Rj gR>M",
-" RP RP! RPB RaP RP. R8P P.RB 8PRa S S! ST Sa Sj S8 STj Ss RP( R+P P(RB +PRa",
-" P(R. +PR8 RP(.B R+8aP S( S+ ST( S+T Sj( S+8 TjS( Ss+ RW RW! RHW RWa RW. RW",
-"8 R.HP H8RW SW S!W SZ SZa SWj S8W SZj SsZ RWd R+W HPRd gRW R.dP +WR8 dP.RH ",
-"RWg8 Sd S+W SZd gS Sdj S8d ZdSj gSs Rm Rm! RmB Ram R5m R8m RB5P 5aRm Sm S!m",
-" STm Sam Sp Sp8 SpT Ssp Rm; R+m RB;P +mRa 5PR; >PR ;PBR5 Ra>P S; S+m S;T Sa",
-"; Sp; S> pTS; S>s RWm W!Rm RHm HmRa R5W 5WR8 H5RW H8Rm SWm W!Sm SZm ZaSm Sp",
-"W pWS8 SZp SZsp vR vR+ vRH gvR vR5 v>R RHv5 gR>P Sv Sv+ SvZ gSv Svp S>v ZpS",
-"v yS R# R& R#B Ra& R#. R8& .BR# 8aR& RM# R&M RT# RT& Rj# R&j TjR# sR& R#( R",
-"+& #BR( +aR& #(R. +8R& R#(.B R+8a& M#R( +MR& T#R( +TR& j#R( +jR& RTj#( R+s&",
-" R#E R&E RH# RH& #ER. 8&RE H#R. H8R& M#RE REM& R#HM HMR& j#RE RE&j R#Hj RHs",
-"& Rd# Rd& HdR# gR& d#R. 8dR& RHd#. R8g& R#dM dMR& R#Td RTg& R#dj d&Rj RHjd#",
-" g&sR R#2 R&2 2BR# a&R2 R5# R5& 5BR# 5aR& M#R2 R2M& T#R2 R2T& R#5M 5MR& R#5",
-"T R5s& R;# R;& ;#RB a;R& 5;R# >R& R5;#B Ra>& R#M; M;R& R#T; T;R& R#;j R&>M ",
-"R5T;# >&sR #ER2 &ER2 H#R2 R2H& 5#RE RE5& R#H5 H5R& RM#E2 M&ER2 RHT#2 RH&T2 ",
-"R5M#E R5&ME RH5T# sRH5& d;R# d&R; R#H; R;g& R#5d Rd>& RH5d# >&gR dM;R# dM&R",
-"; RH;T# gRT;& R5dM# >MRd& RH;j# >MgR& RP# R&P P#RB aPR& P#R. 8PR& RP#.B aP&",
-"R8 S# S& ST# Sa& Sj# S8& TjS# Ss& P#R( +PR& RP#(B aP&R+ RP#(. R+8P& P#(R.B ",
-"R+8aP& S#( S+& T#S( +TS& j#S( +jS& STj#( s+S& RW# RW& R#HP HPR& W#R. W8R& R",
-"HW#. RH8W& SW# S&W SZ# SZ& WjS# W8S& ZjS# S&sZ R#dP +WR& dP#RH RWg& dP#R. d",
-"P&R8 RH#dP. gRW8& Sd# Sd& ZdS# gS& djS# 8dS& SZdj# S&gs Rm# Rm& m#RB amR& R",
-"#5P 5PR& R5m#B R5am& Sm# S&m TmS# TmS& Sp# Sp& pTS# S&sp R#;P +mR& ;P#RB a;",
-"PR& ;P#R5 Rm>& R5#;PB >PRa& S;# S;& T;S# T;S& p;S# S>& SpT;# S&s> WmR# W&Rm",
-" R#Hm HmR& R#5W 5WR& RH5W# RH5W& WmS# W&Sm ZmS# SmZ& pWS# SWp& S#Zp ZpS& vR",
-"# vR& RHv# v&gR R5v# >Rv& vRH5# >PgR& Sv# Sv& S#Zv S&gv S#pv pvS& SZpv# yS&",
-" RU RU! RD RDa RU. R8U RD. RD8 RUM U!RM VR VRa RjU U8Rj VRj sRV RU( R+U RD(",
-" R+D U(R. U+R8 D(R. +DR8 UMR( RU+M VR( V+R R(Uj U+Rj RjV( V+sR RUE U!RE RHU",
-" UHRa UER. REU8 R.UH UHR8 UMRE RUM!E VRH RHVa REUj R8UME RHVj VRsH RdU U+Rd",
-" RDd gRU R.Ud U8Rd R.Dd RDg8 RUdM R+UdM VdR gVR UdRj R+jUd RdVj sRgV RU2 U!",
-"R2 RD2 R2Ua R5U U5R8 R5D U5Ra UMR2 RUM!2 V2R RaV2 U5Rj R5U8M V5R V5sR R;U U",
-"+R; RD; UaR; U5R; >RU 5DR; >RD RUM; R+UM; V;R R+V; U;Rj Rj>U R5V; V>R UER2 ",
-"RUE!2 R2UH RHUa2 REU5 R5U8E UHR5 RH5U8 RUME2 U!MRE2 RHV2 V2RHa R5UME U58RjE",
-" RHV5 VsHR5 UdR; R+Ud; UHR; RDg; U5Rd Rd>U 5DRd >RgU dM;RU R+UdM; RHV; V;gR",
-" R5dUj >MRUd R5Vd gRV> UP UP! RDP UaP UP. U8P R.DP D8UP SU S!U SV SVa SUj S",
-"8U SVj SsV UP( U+P R(DP +DUP P(U. +PU8 RDP(. R+D8P SU( S+U SV( SV+ UjS( U+S",
-"8 VjS( VsS+ RWU R!UW RWD UWRa R.UW UWR8 R.WD H8UP SUW UWS! SZV VZSa UWSj UW",
-"S8 SjVZ SVsZ UdP U+RW HPUd gUP U.dP 8dUP RWDd. U8gP SdU U+Sd SVd gSV UdSj U",
-"8Sd SjVd SsgV RmU R!Um RDm UaRm U5P U8Rm 5DRm 5aUP SUm UmS! SVm VmSa SpU pU",
-"S8 VpS VpSs U;P U+Rm DmR; +DRm 5PU; >PU R5D;P RD>P S;U U+S; SV; V+S; pUS; S",
-">U S;Vp S>V UWRm RWUm! UHRm RHmUa U5RW R5WU8 H5UP RH8Um UWSm S!UWm VmSZ SZV",
-"am SWpU SpUW8 SZVp SZpVs vRU R+vU vRD vRgU R5vU vU>P R5vD gU>P SvU vUS+ VvS",
-" VvgS pUSv vUS> VpSv yVS Rb Rb& RbD cR Rb. Rb8 bDR. cR8 RbM bMR& VRb cRV Rb",
-"j b8Rj RbVj scR Rb( Rb+ bDR( cR+ b(R. b+R8 RbD(. R+c8 R(bM bMR+ RbV( V+cR R",
-"(bj b+Rj VRbj( s+cR RbE REU& RbH cRH bER. REb8 R.bH RHc8 REbM M&ERb RbVH VR",
-"cH REbj Rb8ME bHRj sHcR Rbd b+Rd bHRd gcR R.bd b8Rd RbHd. g8cR bMRd dM&Rb R",
-"bVd cRgV bdRj d&jRb VdRbj scgR Rb2 R2U& bDR2 cR2 Rb5 b5R8 b5RD cR5 R2bM M&2",
-"Rb RbV2 V2cR b5Rj Rb58M RbV5 c5sR Rb; b+R; b;RD cR; b5R; >Rb Rb5D; c>R bMR;",
-" M;&Rb RbV; V;cR b;Rj Rb>M V5Rb; sRc> bER2 Rb&E2 R2bH RHc2 REb5 Rb58E bHR5 ",
-"RHc5 RbME2 RbEM&2 V2RbH cRVH2 Rb5ME M&ERb5 V5RbH cR5sH bdR; Rb+d; bHR; c;gR",
-" b5Rd Rb>d RbH5d gRc> RbdM; RbdM;& VdRb; gVcR; Rb5dM >MbRd V5dRb V>gcR RbP ",
-"UP& bPRD cRP R.bP bPR8 RbDP. R8cP Sb Sb& SVb Sc Sbj Sb8 VbSj Scs R(bP bPR+ ",
-"RbDP( R+cP RbP(. Rb+8P bP(RD. cR+8P Sb( Sb+ VbS( Sc+ bjS( b+S8 SVbj( S+sc R",
-"bW bWR& bHRW cRW R.bW bWR8 RbHW. RWc8 SbW bWS& SZb ScZ bWSj bWS8 SjZb ZcSs ",
-"bWRd b+RW RbHdP cRgP RbWd. dP&U8 dP.RbH cRWg8 Sbd b+Sd ZbSd gSc bdSj b8Sd S",
-"Zbdj gsSc Rbm bmR& bmRD cRm b5Rm b8Rm Rb5Dm R5cm Sbm bmS& VmSb Scm Spb pbS8",
-" SbVp Scp bmR; b+Rm RbmD; R+cm Rb5;P Rb>P b5PRD; cR>P Sb; b+S; V;Sb Sc; pbS",
-"; S>b SpbV; Sc> bWRm RbWm& bHRm RHcm b5RW Rb5W8 RbH5W R5cW bWSm SbWm& SmZb ",
-"cmSZ SWpb SpbW8 ZpSb SZcp vRb Rbv& RbvD cvR Rbv5 >Rvb vRbH5 v>cR Svb vbS+ S",
-"bVv Scv pvSb v>Sb VvpSb ycS Rk Rk! RkB Rak R1 R18 R1B R1a RkM kMR! RTk TkRa",
-" lR lR8 lRT lsR Rk( R+k k(RB +kRa R1( R1+ 1(RB 1+Ra kMR( Rk+M R(Tk +kRT lR(",
-" l+R RTl( sRl+ RkE kER! RHk HkRa R1E RE8k R1H 1HR8 kMRE RkM!E HkRT RHTak lR",
-"E R8lE lHR sRlH Rdk +kRd HkRd gRk R1d 1+Rd 1HRd gR1 RkdM dkMR+ TkRd RTgk ld",
-"R R+ld RHld glR Rk2 k2R! k2RB R2ak R15 5kR8 RB5k 1aR5 kMR2 RkM!2 R2Tk ak2RT",
-" lR5 R5l8 R5lT l5sR R;k +kR; RBk; akR; R1; >kR RB1; R1>a RkM; k;MR+ TkR; ak",
-";RT l;R l>R RTl; sRl> kER2 RkE!2 R2Hk ak2RH RE5k R158E 1HR5 R1H5a RkME2 kME",
-"R2! RHTk2 RHTak2 R5lE lR58E RHl5 lsRH5 dkR; dk;R+ HkR; R;gk 1dR5 R1>d 1HR; ",
-"gR>k dkMR; R+dk;M RH;Tk gRTk; R5ld >Rld RHl; gRl> kP kP! kPB akP R1P 8kP RB",
-"1P 1PRa Sk S!k STk Sak Sl Sl8 SlT Ssl kP( +kP P(kB ak+P R(1P 1PR+ kP(1B akP",
-"1+ Sk( S+k TkS( +TSk Sl( l+S STl( l+Ss RWk R!Wk HkP WkRa R1W 1WR8 1HRW 1WRa",
-" SWk WkS! SZk ZkSa lWS S8lW lZS lZSs dkP +kRW dkHP gkP 1WRd 1+RW dkP1H R1gP",
-" Sdk +WSk ZkSd gSk ldS S+lW SZld glS Rmk R!km RBkm akRm R1m 1mR8 RB1m 1aRm ",
-"Skm kmS! TkSm akSm Slp lpS8 lTSp Slsp k;P +kRm kB;P k;aP 1mR; >kP k;P1B ak>",
-"P S;k +kS; TkS; akS; l;S S>l lTS; Ssl> WkRm km!RW HkRm akmRH 1WR5 R1W8m 1HR",
-"m akPH5 WkSm S!Wkm SmZk SZakm SplW SlpW8 SplZ SZpls vRk R+vk RHvk vRgk vR1 ",
-"vR>k R1vH gk>P Svk vkS+ ZkSv gkSv lvS S>lv lZSv ylS R9 R9& R9B R9a R91 :R 9",
-"1RB :Ra R9M 9MR& R9T 9TRa lR9 l:R R9lT s:R R9( R9+ 9(RB 9+Ra 91R( :R+ R91(B",
-" R+:a R(9M 9MR+ R(9T 9+RT R9l( :Rl+ lR9T( s+:R R9E REk& R9H 9HRa 91RE :RE 9",
-"HR1 :RH RE9M k&ERM 9HRT R9HT& R9lE lE:R R9lH :RlH R9d 9+Rd 9HRd gR9 9dR1 :R",
-"d R9H1d g:R 9MRd dk&RM 9TRd R9gM R9ld :Rld lHR9d gRl: R92 R2k& 92RB R29a R9",
-"5 :R5 RB95 R5:a R29M k&2RM R29T R9T&2 R9l5 l5:R 95RT s5:R R9; 9+R; RB9; 9aR",
-"; 95R; :>R R95;B :a>R 9MR; k;&RM 9TR; aM;R9 R9l; :Rl> l;R9T :>sR 9ER2 k&ER2",
-" R29H R9H&2 RE95 R5:E 9HR5 RH:5 R9ME2 R9EM&2 R9HT2 aM2R9H lR95E :R5lE lHR95",
-" :RHl5 9dR; dk&R; 9HR; R9g; 95Rd >R:d R9H1; :>gR R9dM; R9dM;& R9HT; gR9T; l",
-"dR95 l>:Rd lH;R9 g:Rl> R9P kP& RB9P 9PRa 9PR1 :RP kPB91 Ra:P S9 S9& S9T S9a",
-" Sl9 S: lTS9 S:s R(9P 9PR+ kP(9B akP9+ kP(91 R+:P 9P(R1B :R+aP S9( S9+ 9TS(",
-" 9+Sa l(S9 S:+ Sl9T( S+s: R9W 9WR& 9HRW 9WRa 9WR1 :RW R9H1W RH:W S9W 9WS& S",
-"Z9 Z9Sa S9lW S:W S9lZ S:Z 9WRd 9+RW dkP9H R9gP dkP91 R+:W 9HPR1d :RgP S9d 9",
-"+Sd Z9Sd gS9 S9ld S:d SZ9ld gS: R9m 9mR& RB9m 9aRm 95Rm :Rm R95mB Ra:m S9m ",
-"9mS& 9TSm 9aSm Sp9 S:p STp9 :pSs 9mR; 9+Rm k;P9B ak;9P k;P95 :R>P k;B95P :>",
-"Ram S9; 9+S; 9TS; 9aS; S9l; S:> Sp9T; s:S> 9WRm km&RW 9HRm km&RH 95RW R5:W ",
-"R9H1m RH:m 9WSm S9Wm& SmZ9 SZ9am SWp9 :WSp ZpS9 SZ:p vR9 R9v& R9vH vRg9 R9v",
-"1 :vR vR91H gR:v Sv9 v9S+ ZvS9 g9Sv S9lv S:v Sv9lZ y:S RUk U!Rk RDk DkRa R1",
-"U 1UR8 R1D 1URa UkRM RUkM! VRk RaVk lRU R8lU VlR VlsR UkR( RU+k R(Dk +kRD R",
-"(1U 1UR+ R(1D 1+RD RUkM( R+UkM RkV( R+Vk RUl( R+lU VRl( lRV+ UkRE RUk!E HkR",
-"D RHUak RE1U R1U8E 1URH R1HU8 RUkME U!kRME RHVk VRHak RUlE lRU8E VRlH lsVRH",
-" RUdk R+Udk DkRd RDgk 1URd R1+Ud 1DRd R1gU dkMRU R+UdkM RdVk VRgk RdlU l+RU",
-"d lRVd VlgR UkR2 RUk!2 R2Dk ak2RD 1UR5 R1U58 1DR5 R1D5a RUkM2 U!kRM2 RkV2 V",
-"2Rak R5lU lRU58 lRV5 lsVR5 RUk; R+Uk; DkR; ak;RD 1UR; R1>U 1DR; R1>D k;MRU ",
-"R+Uk;M R;Vk V+Rk; R;lU lR>U lRV; >RVl RUkE2 U!kRE2 RHUk2 RHUak2 R1U5E 1U5R8",
-"E R1HU5 1UHR5a UkMRE2 !ER2UkM V2RHk ak2VRH lRU5E R5Ul8E VlRH5 Vs5lHR dk;RU ",
-"R+Udk; RH;Dk gRUk; R1dU5 >kRUd R1HU; >kgRD RdUk;M dkR;U+M VdRk; gVRk; ldRU5",
-" l>RUd lH;VR V>lgR UPk U!kP DkP akUP 1UP U81P 1PRD Ua1P SUk U!Sk SVk VaSk S",
-"lU lUS8 SlV SVls U(kP +kUP D(kP Dk+P 1(UP U+1P R1DP( R1+DP UkS( U+Sk VkS( S",
-"kV+ SUl( lUS+ l(SV SVl+ WkUP kP!UW HkUP akPUH 1URW R1WU8 1WRD R1WUa UWSk S!",
-"UWk ZkSV SZVak SUlW SlUW8 SVlZ SlVsZ dkUP dkPU+ dkDP UPgk Ud1P dkPU8 dkP1D ",
-"1UgP UdSk S+UWk SkVd SVgk lUSd S8dlU SVld SlgV kmUP km!UP DkRm akmRD 1URm R",
-"1mU8 1DRm akPU5 UmSk S!Ukm SkVm SVakm pUSl SlpU8 SlVp SlVsp k;UP k;PU+ k;DP",
-" ak;UP U;1P 1U>P k;P1D Dk>P U;Sk S+Ukm SkV; SV+km lUS; >USl SVl; SlV> RWUkm",
-" RWUkm! RHmDk RWDakm R1WU5 1UWR8m R1HUm 1UHR8m SUWkm km!SUW SZVkm ZkVSam Sl",
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-"M VtR VtcR ltR :Rlt lRVt uR tR( t+R RDt( cRt+ R1t( :Rt+ tR1D( :+cR RMt( R+t",
-"M VRt( tRV+ tRl( lRt+ ltVR( uR+ tRE R&tE tHR cRtH R1tE tE:R R1tH :RtH RMtE ",
-"tRM&E VRtH tcVRH tRlE t:RlE lRtH uRH tdR R+td RHtd gtR R1td :Rtd tHR1d t:gR",
-" RdtM t+RdM tRVd VtgR lRtd t:dlR tdVlR ugR tR2 R&t2 RDt2 c2tR t5R :Rt5 R5tD",
-" cRt5 RMt2 tRM&2 tRV2 tcVR2 lRt5 t:Rl5 tRV5 uR5 t;R R+t; RDt; cRt; R1t; t>R",
-" t5RD; :Rc> R;tM t+RM; tRV; tc;VR lRt; >Rlt t5VR; u>R REt2 tR&E2 RHt2 tcRH2",
-" R5tE t:R5E RHt5 t:HR5 tRME2 M&EtR2 tHVR2 cRVtH2 t5RlE lt5:RE tH5lR RHu5 Rd",
-"t; t+Rd; RHt; t;gR R5td >Rtd tH5Rd gRt> tdRM; dM&t;R tH;VR gtVR; t5dlR t>lR",
-"d tH;lR g>uR tP tP& tPD tcP tP1 t:P 1DtP :ctP St St& StV Sct Stl S:t SVlt u",
-"S tP( t+P DPt( cPt+ 1Pt( :Pt+ tP1D( t:Pc+ St( St+ S(Vt tcS+ l(St l+St SlVt(",
-" uS+ tWR RWt& tHP cRtW R1tW :RtW 1HtP :HtP StW tWS& tZS tZSc lWSt tWS: lZSt",
-" uZS tdP R+tW HPtd gtP 1dtP :dtP tHP1d t:gP Std t+Sd SdtZ gtS ldSt t:Sd Std",
-"lZ ugS tmR Rmt& RDtm cRtm t5P :Rtm 5DtP cR:m Stm tmS& tmSV tmSc tpS tpS: Vp",
-"St upS t;P R+tm D;tP c;tP 1;tP t>P t5PD; tc>P St; t+S; t;SV S;tc l;St S>t S",
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-"tvgS Stlv tvS: lvVSt yuS )O !)O )BO a)O )O. 8)O )O.B a)8O )OK )O!K T)O a)TO",
-" jO) 8)jO T)jO s)O *O +*O *BO a*O *O. 8*O .B*O 8Oa* *OK *O+K T*O +OT* *jO j",
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-">O ,H5dO >Og- ,d;OK -d;OK ,H;TO -T;gO ,5djO ->djO ,H;jO s-g>O ,P ,P& ,PB ,a",
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-". W8,P ,.HP H8,P WQ,P ,WQP& Z,P ,aZP Wj,P P&j,W ,PZj Z,sP ,dP -WP HP,d g-P ",
-",.dP W8-P ,HPd. g8-P Qd,P Qd-P ,dZP Z-P dP,j Wj-P Z*P,j gPs- ,mP m&,P mP,B ",
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-";P am-P 5P,; >P- ,5P*B -a>P Q;,P Q;-P T;,P Tm-P ,;pP -pP p*T,P >Ps- Wm,P m&",
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-", sP,Zp v,P -vP ,HvP gP-v ,5vP >P-v v,H5P g->P ,QvP vQ-P ZPv, -PZv pPv, pv-",
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-")H8O C)OEK2 C)!OEK2 DT)HO2 DTH)aO2 5CEjO) 5)jO8CE 5D)HjO H5Ds)O d;*CO d;*+C",
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-"DPQ* aP*QD PC*j P*j+C P*Dj DPs* PCW) W!PC) H)DP aP)WD WPC). W8PC) HPD). H8P",
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-" mPC!) mPD) amPD) PC5) 5P8C) 5)DP 5DP8) QmPC) mPCQ!) QDmP) QDmaP) PCp) p8PC",
-") DPp) sPDp) mCP* m*P+C m*DP am*DP 5CP* P*>C DP5* DP>* m*PQC +QmP*C QD;P* Q",
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-"-P pvb,P -pvbP ZpbP* c-yP 0)O 0)!O 0)OB 0)aO 1)O 8)1O )B1O a)1O )O0K !K0)O ",
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-"+*0OK *0TO a*0TO jO1* *jO1+ 1OT* 1*sO 0)EO !E)0O 0)HO Ha0)O E)1O 18E)O H)1O",
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-")O02 0)2!O 0)2OB a0)O2 5)1O 158)O 15)OB 1a5)O 0)2OK !)O2K0 T0)O2 a0)TO2 jO1",
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-" o!Q<C QDo< oDQa< oCp< op8<C p<oD oDs< o=C =Co+ =Do o+=D o5=C >Co= =5oD =Do",
-"> oQ=C o=+QC oD=Q o+D=Q =Cop o>p=C op=D =Dos W<oC o!W<C H<oD oHDa< o5W<C o8",
-"W<C oH5D< oH8D< oWQ<C W<Qo!C oDZ< oZDa< opW<C p<Wo8C Zp<oD osZD< =Cov ov=+C",
-" ov=D =Dgo ov=5C o>v=C ovD=5 go>=D ov=QC =Qvo+C =DoZ goZ=D p=ovC p=vo>C p=D",
-"oZ =Dyo ,nb <&bn ,Dn c<n ,.bn b8,n ,.Dn ,8cn ,Kbn <&Kbn bT,n ,Tcn bn,j <&jb",
-"n Dn,j c<sn bn* -nb Dnb* c-n b.n* b8-n ,Dn*. c8-n bKn* bn-K Tnb* -Tcn n*bj ",
-"bn-j n*j,D c-sn ,Ebn <&Ebn bH,n ,Hcn ,nbE. ,8nbE ,Hnb. c<H8n ,nbEK b<E&nK ,",
-"HnbT c<HTn ,njbE <&Ebnj ,Hnbj sn,cH bd,n bd-n Hnb* c-gn ,dnb. -nb8d ,Ddn. c",
-"-ng8 ,dnbK -nbdK ,DdTn c-ngT <djbn -njbd dnj,D s-ngc 4b,n ,4b&n 4D,n ,4cn b",
-"5,n ,48bn 5D,n ,5cn ,4bnK ,4b&nK ,4DTn c4T,n ,4jbn 4b8,nj ,4Dnj sn,c4 =bn -",
-"n=b ,D=n c=n b5=n =b>n =b5Dn >nc= bn=K =b-nK bT=n cn=T bn=j >n-bj =bT5n snc",
-"= ,4bnE ,4b&nE ,4Hbn c4H,n ,5nbE <&Eb5n ,H5bn c5<Hn 4bE,nK <&bn4EK 4bH,Tn ,",
-"4HcnT <jEb5n &n4jb<E 4bH,nj s<Hc5n bd=n =b-dn bH=n gnc= =b5dn >n-bd =bH5n c",
-"=g>n =bdnK -nd=bK =bHTn c=gTn =bjdn >nd=bj =bHnj s=cgn b<P <&bP D<,P c<P b.",
-"<P 8<bP ,DP<. 8<cP bQ,n <P&bQ QD,n ,Qcn <Pbj <P&bj <Pj,D c<sP <Pb* b<-P ,DP",
-"n* -Pc< b<P*. -Pb8< P*.,Dn c-P8< Qnb* bQ-n ,QDn* -Qcn <Pjb* -Qnb8 ,QDn*j s-",
-"Pc< bW,n <P&bW H<bP ,Wcn ,Wnb. ,W8bn ,WDn. cW<8P ,WnbQ W<&bQn ,DZn c<Zn <Pj",
-"bW bW8<Pj Zb<Pj Zc<sP Wnb* bW-n ,WDdn c<gP bWn*. -Wnb8 <d.,DP c-W8n ,Qdbn -",
-"WnbQ bnZ* c-Zn <djbP -Wnbj Zbn*j Z-nsc ob< b<o& oD, oc< ,5ob ,8ob ,5oD o8c<",
-" ,Qob obQ<& ,QoD oTc< pbo, opb,8 pDo, s<oc =bo o-b ob=D oc- =5ob =bo> =bo5D",
-" c>o- ob=Q -Qob ob=T =Qoc op=b ob-p p=boD ocs= ,Wob obW<& ,Hob oHc< ob5,W o",
-"b8,W obH,5 ocH,5 obW,Q bW<o&Q obZ< Z<oc opb,W obWp<& oZbp< oscZ< ov=b ob-v ",
-"ob=H c=go ovb=5 o-v>b ovD,5 cv=o> ovb=Q o-vbQ =boZ ocZ- p=bov o-pvb Z=bop o",
-"cy- 6<n n!6< <n6B 6<an 1<n 8<1n <n1B a<1n <n6K 6!<nK 6<Tn 6Ta<n <j1n <jn68 ",
-"T<1n 1<sn 6*n +n6* 6n*B an6* 1n* +<1n *B1n an1* 6Kn* n*K6+ Tn6* an*6T n*6j ",
-"n*j6+ Tn1* 6*sn <n6E 6!<nE 6<Hn 6Ha<n <n1E 68<nE H<1n 6H8<n 6<nEK n!<6EK 6H",
-"T<n H<T6an <jn6E 68<njE 6Hj<n s<H1n dn6* <dn6+ Hn6* 6*gn <d1n 68dn* Hn1* 1<",
-"gn <dn6K 6+<dnK 6H*Tn g6Tn* <dj1n 68dn*j n*j6H sn*g6 6<4n 6!4<n 46<nB 4a6<n",
-" 7<n 8<7n <n7B a<7n 46<nK 4<n6!K 4T6<n 6T<4an <j7n 78<nj T<7n 7<sn =6n 6+=n",
-" 6n=B 6a=n 7=n 7=>n =n7B =n7a 6n=K =6+nK 6T=n =T6+n 7n=j 7>=nj =n7T 7=sn 46",
-"<nE 4<n6!E 4H6<n 6H<4an <n7E 78<nE H<7n 7H8<n 6<n4EK 4<6!nEK 6H<4Tn a<Hn4T6",
-" 7<njE <jn78E 7HT<n 7sH<n 6d=n =6+dn 6H=n =6gn =n7d 7>=dn =n7H 7=gn =6dnK d",
-"nK=6+ =H6Tn g=6Tn 7=dnj >n=7dj 7Td=n g7s=n 6P< 6!<P 6B<P a<6P 1<P 8<6P 1B<P",
-" a<1P Q<6P <P!6Q T<6P 6Qa<P Q<1P <Pj68 T<1P 6Ps< 6P* +<6P *B6P aP6* 1P6* +<",
-"1P 6P*1B aP*68 Qn6* 6+Q<P TP6* aP*6Q Qn1* <Pj6+ P*j6T 6Ps* W<6P <P!6W H<6P ",
-"6HPa< W<1P 6W8<P H<1P 6H8<P 6WQ<P 6WQ<P! 6PZ< Z6a<P <Pj6W 6W8<Pj 1<Zn s<PZ6",
-" Wn6* 6+W<P HP6* 6Pg< Wn1* 6W8P* 6HP1* 1<gP 6W*Qn +Wn6Q* 6PZ* Z6*gP <dj6P 6",
-"+W<Pj 1nZ* s<Pg6 o6< 6!o< 6<oB 6ao< 7o< 7<o8 o<7B 7<oa 6Qo< o!6Q< 6To< oT6a",
-"< p<7o 7op8< 7<oT 7os< o=6 =6o+ o6=B =6oa 7o= 7=o> =B7o 7o=a o6=Q o=6+Q =6o",
-"T o+T=6 7op= 7o=p> 7o=T 7os= 6Wo< o!6W< 6Ho< oH6a< oW7< 7oW8< 7<oH 7oH8< o6",
-"WQ< 6WQo!< o6Z< oZ6a< 7opW< op87W< Z<7o osZ7< v6o= ov=6+ =6oH o=g6 ov7= 7o=",
-"v> 7o=H 7og= ov=6Q =Qvo+6 o=Z6 goZ=6 7o=pv o>p7v= 7oZ= 7oy= ?n ?&n ?Bn ?an ",
-"?1n ?:n 1n?B :n?a ?nK &n?K ?Tn T&?n ?jn :n?j 1T?n s?n ?n* ?-n n*?B -n?a 1n?",
-"* :-n ?B1n* :a-n n*?K ?K-n Tn?* -n?T n*?j -n?j ?T1n* ?-sn ?nE &n?E ?Hn H&?n",
-" 1n?E ?E:n 1H?n :n?H nE?K ?&nEK Hn?T ?HTan nj?E ?:njE Hn?j ?Hsn ?dn -n?d Hn",
-"?d g?n 1d?n :n?d ?H1dn ?:gn dn?K ?-dnK Td?n ?Tgn dn?j ?:dnj ?Hjdn gns? ?4n ",
-"4&?n 4n?B 4a?n 7?n :n7? ?n7B ?n7a 4n?K ?4&nK 4T?n ?T4an 7n?j ?:7nj ?n7T 7?s",
-"n ?=n -n?= ?B=n =n?a =n7? An ?=7nB Aan ?n=K ?-=nK =n?T ?-T=n =n?j Ajn ?T7=n",
-" Asn 4n?E ?4&nE 4H?n ?H4an 7n?E ?:7nE ?n7H ?:H7n ?4nEK &nE?4K ?H4Tn 4H&?Tn ",
-"?j7nE 7:n?jE ?H7Tn s?7Hn =n?d ?-=dn =n?H ?=gn ?n7d Adn ?H7=n Agn ?=dnK -=n?",
-"dK ?Td=n g?=Tn ?d7nj dnAj ?Hj=n gsAn ?P ?P& ?PB ?aP ?P1 ?:P 1P?B :P?a ?QP Q",
-"&?P ?TP Qa?P ?Pj :Q?P 1T?P s?P ?P* ?-P P*?B -P?a 1P?* :-?P ?P1*B ?:P-a Qn?*",
-" -Q?P TP?* -T?P P*?j -Q:n ?TP1* ?-sP ?WP W&?P ?HP HP?a 1W?P :W?P 1H?P :H?P ",
-"Wn?Q ?WQP& ?ZP Z&?P Wn?j ?:WQn Z1?P sP?Z ?dP -W?P HP?d g?P 1d?P :d?P ?HP1d ",
-"?:gP Qd?P ?-WQn Zn?d gP?Z dP?j ?:QdP ?Z1dP gPs? o? o?& o?B o?a o?7 o:? 7Bo?",
-" ?ao: o?Q o&?Q o?T oT?a ?po o:?p 7o?T s?o o?= o-? =Bo? =ao? 7o?= Ao 7o=?B A",
-"oa =Qo? ?Qo- =To? ?To- p=o? Aop o?Tp= Aos o?W o&?W o?H oH?a 7o?W ?Wo: 7o?H ",
-"?Ho: oW?Q o?WQ& ?Zo ?aoZ op?W o:?pW o?7Z os?Z ?vo o-?v =Ho? go? o?7v Aov o?",
-"H7v Aog ov?Q o-?vQ o?Z= ?Zgo op?v opAv ?Zo7v yAo <n6C 6!<nC 6<Dn 6Da<n <n1C",
-" 68<nC D<1n 6D8<n 6<nCK n!<6CK 6DT<n D<a6Tn <jn6C 68<njC 6Dj<n s<D1n 6Cn* n",
-"*C6+ Dn6* an*6D 1Cn* 68*nC Dn1* an*1D n*C6K 6+Cn*K 6D*Tn +Dn6T* n*j6C <jC1+",
-"n n*j6D sn*6D 6<nCE n!<6CE 6HD<n H<D6an 1<nCE 8<C1nE 1H<Dn H8<1Dn <nC6EK EK",
-"<!6nC H<D6Tn a<Hn6DT 1<CnjE <j1n8CE H<j1Dn 1H<snD <dn6C 6+<dnC 6H*Dn g6Dn* ",
-"1<dnC <dC1+n 1HnD* g1<Dn 6dCn*K <d+n6CK Ddn6T* 6D*gnT <jC1dn <d6j+nC 6Ddn*j",
-" s<Dg1n 46<nC 4<n6!C 4D6<n 6D<4an <n7C 78<nC D<7n 7D8<n 6<n4CK 4<6!nCK 6D<4",
-"Tn a<Dn4T6 7<njC <jn78C 7DT<n 7sD<n 6n=C =6+nC 6D=n =D6+n 7n=C 7>=nC =n7D 7",
-">D=n =6nCK 6+n=CK =D6Tn 6+D=Tn 7=njC >nj7=C =D7Tn s=7Dn 6<n4CE 4<6!nCE 6H<4",
-"Dn a<Hn4D6 7<nCE 8<n7CE 7HD<n H8<7Dn 6<4nEKC 6n4CEK<! T<Hn4D6 46T<HDan <jn7",
-"CE <j7n8CE H<j7Dn 7HDs<n =6dnC dnC=6+ =H6Dn g=6Dn 7=dnC >n=7dC 7Dd=n g7=Dn ",
-"dnC=6K dn=C6+K 6Dd=Tn g6D=Tn =jn7dC >j7d=nC 7Hn=Dj s=Dg7n 6C<P <PC6! D<6P 6",
-"DPa< 1C<P 68P<C D<1P 6D8<P <PC6Q 6QC<P! 6QD<P QD<6aP <Pj6C <PC6Q8 <Pj6D s<P",
-"6D 6CP* 6+P<C DP6* aP*6D 6P*1C 68P*C 6DP1* 6D8P* 6Q*PC <PC6+Q 6QDP* 6QDaP* ",
-"P*j6C <PC6+j P*j6D sP*6D <PC6W 6WC<P! 6HPD< WD<6aP 1W<PC <PC6W8 1H<DP H8<6D",
-"P 6WQ<PC QC<P6W! Z6D<P 6DPZ<a <PC6Wj <PWj68C Z1<DP s<DZ1n 6W*PC <dC6+P 6HPD",
-"* g6PD< 1Wn*C <dC68P 1WDn* g1<DP <PC6Qd 6C+WQn* Z6*DP Z6Dg<P <dC6Pj dP<j6+C",
-" Z1nD* s<Dg6P 6<oC o!6<C 6Do< oD6a< o<7C 7o8<C 7<oD 7oD8< o6Q<C 6Q<o!C oD6Q",
-"< 6QDoa< 7op<C o8<7pC 7oDp< os7D< o6=C o=6+C =6oD o+D=6 =C7o 7o=>C 7o=D o>D",
-"7= o=6QC =Q6o+C =QDo6 o+6=QD 7o=pC p=7o>C p=D7o s=o7D o6W<C 6W<o!C oH6D< 6W",
-"Doa< 7oW<C o8<7WC 7oHD< 7H<oD8 6WQo<C Q!oW6<C oZ6D< oD6Z<a op<7WC 78p<oWC 7",
-"ZoD< 7ZDos< ov=6C v=6o+C ovD=6 go=6D 7o=vC o>=7vC 7vDo= go7=D =Q6ovC =6o+vQ",
-"C Z=o6D Z=6goD p=o7vC >C7vp=o 7Z=oD yo7=D ?bn bn?& ?Dn ?cn b1?n ?b:n 1D?n :",
-"n?c bn?K ?b&nK bT?n cn?T bn?j ?:bnj Dn?j sn?c bn?* ?b-n Dn?* cn?- 1nb* :b-n",
-" ?D1n* c-:n ?bn*K ?-bnK ?DTn* ?-Tcn ?jbn* ?-jbn ?Djn* s-n?c bn?E ?b&nE bH?n",
-" cn?H ?b1nE ?:bnE ?Hb1n ?:Hcn ?bnEK &nE?bK ?HbTn ?cHTn ?jbnE :nb?jE ?Hjbn s",
-"?cHn bd?n ?-bdn Dd?n gn?c ?d1bn ?:dbn ?Dd1n g:n?c ?dbnK -nb?dK ?DdTn g?cTn ",
-"?djbn ?db-nj ?Ddnj g?scn 4b?n ?4b&n 4D?n ?4cn ?n7b ?:7bn ?n7D cn7? ?4bnK &n",
-"K?4b ?D4Tn ?c4Tn ?j7bn 7:b?jn ?D7Tn s?7cn ?b=n ?-=bn =n?D cn?= =n7b Abn ?D7",
-"=n Acn ?=nbK =bn?-K =bT?n c=?Tn =b7nj bnAj ?Dj=n scAn ?4bnE &nE?4b ?H4bn ?c",
-"4Hn 7?bnE 7bn?:E ?H7bn 7c?Hn 4bn?EK &n?E4bK 4bH?Tn c4H?Tn 7bn?jE 7j?E:nb ?H",
-"n7bT 7cHs?n ?=dbn =b-?dn ?Dd=n c=?gn ?d7bn bdAn ?D7dn gcAn =bn?dK =d-n?bK ?",
-"Hn=bT g?Tc=n ?dn=bj Adnbj ?Hn=bj Agnsc ?Pb bP?& ?DP ?cP b1?P ?b:P 1D?P :c?P",
-" bQ?P ?QbP& bT?P cQ?P bP?j ?:QbP DP?j sP?c bP?* ?b-P DP?* c-?P ?Pb1* ?:P-b ",
-"?DP1* ?cP:- ?QbP* ?-QbP ?QDP* ?cQ-P ?Pjb* ?-Pbj ?DP*j s?Pc- bW?P ?WbP& bH?P",
-" cW?P ?Wb1P ?:WbP ?HPb1 ?cW:P ?WbQn bWn?Q& Zb?P ?PZc ?WjbP ?Wb:Qn ?Zb1P s?Z",
-"cP bd?P ?-WbP Dd?P gP?c ?dPb1 ?:dbP ?Dd1P g?P:c ?QdbP ?Wb-Qn ?ZbdP g?ZcP ?d",
-"Pbj ?Wb-Pj ?DdPj g?scP o?b ?bo& o?D oc? 7bo? ob?: 7o?D ?co: ob?Q o?bQ& ob?T",
-" ?Qoc ob?p o:?pb op?D ocs? =bo? ob?- =Do? ?co- 7o=b Aob o?D7= Aoc o?=bQ o-?",
-"bQ o?D=Q oc?=Q p=bo? opAb ?pDo= osAc ob?W o?bW& ob?H ?Hoc ?W7ob o:?bW o?H7b",
-" o:H?c o?bWQ obW?Q& ?DoZ oc?Z ?pobW ?pbo:W ?Zo7b s?oZc ob?v o-?vb ov?D ocg?",
-" 7vbo? ovAb ?vD7o goAc ?vobQ ?vbo-Q ?Zo=b go?Zc ?pvob Aopvb ?pvoD yoAc R< R",
-"<! R<B Ra< R<. R8< <.RB 8<Ra R<M R!<M RT< T<Ra R<j 8<Rj T<Rj sR< R<* R+< *B",
-"R< +<Ra R.n* +<R8 n*.RB an*R8 Mn* +MR< T<R* +TR< <jR* +<Rj Mn*Tj R+s< R<E <",
-"ER! RH< H<Ra <ER. RE8< R.H< H8R< RE<M <MER! H<RT aMnH< RE<j R8<ME H<Rj RHs<",
-" R<d +<Rd H<Rd gR< R.<d 8<Rd RH<d. R8g< <MRd <dMR+ T<Rd RTg< <dRj <dMR8 <dj",
-"RH sRg< R4< 4!R< 4<RB 4aR< R5< 48R< RB5< 5aR< 4MR< <M!R4 4TR< aMn4< 4jR< R4",
-"8<M 5TR< R4s< =R =R+ =RB =Ra =R5 =R> R5=B >R=a =RM R+=M =RT R+=T =Rj =R>M R",
-"5=T s=R 4<RE R4<!E 4HR< R4Ha< RE5< R48<E H5R< R4H8< <MER4 R4E<M! R4HT< 4HMR",
-"a< R4j<E <MER48 R4H<j sR4H< =Rd R+=d =RH g=R R5=d =d>R RH=5 g>=R Rd=M =R+dM",
-" RH=T gR=T Rd=j >M=Rd RH=j gs=R R<P R!<P RB<P aPR< R.<P 8PR< <P.RB R8<aP S<",
-" S<! S<T Sa< S<j S8< T<Sj Ss< <PR* +PR< <P*RB aP*R< <P*R. R+<8P R<.P*B R8<a",
-"P* S<* S+< T<S* +TS< <jS* +<S8 S<T*j S+s< RW< R!W< H<RW WaR< R.W< W8R< RH<W",
-". RH8W< S<W W<S! SZ< Z<Sa W<Sj W8S< SjZ< s<SZ W<Rd +WR< RH<W* RWg< RW<d. R+",
-"W8< <P.RH* gR<W8 S<d +WS< Z<Sd gS< <dSj 8<Sd SZ<dj g<Ss oR< R<o! R<oB Rao< ",
-"R5o< R8o< oR5<B o8Ra< So< o!S< oTS< oaS< Sp< o8S< STp< s<So =Ro o+=R oR=B o",
-"a=R oR=5 =Ro> o=5RB o>=Ra S= S=+ S=T S=a S=p S>= Sp=T s=S RWo< o!RW< RHo< o",
-"HRa< 5WR< o8RW< oHR5< oH8R< oWS< S<Wo! S<oZ SZ<oa SWp< Sp<W8 ZpS< osZS< =Rv",
-" =+vR oH=R =Rgo =5vR v>=R =RvH5 g=Ro> S=v v=S+ S=Z gS= p=Sv v>S= SZp= y=S ,",
-"R< R<& RB,n Ra,n ,.R< R8,n ,R<.B ,R8a< ,Mn <MR& RT,n T<R& R<,j 8M,n ,RT<j ,",
-"Rs< R*,n -R< n*B,R Ra-n n*.,R R8-n ,R.n*B -R8a< M*,n -Mn Mn*,T RT-n Mn*,j R",
-"<-j ,RTn*j -Rs< ,ER< RE<& RH,n H<R& ,R<E. ,R8<E ,RH<. ,RH8< ,EMn <M&RE HM,n",
-" aMn,H ,Rj<E <&jRE ,RH<j sn,RH R<,d R<-d ,RH<d -Rg< ,Rd<. -R8<d <d.,RH g-R8",
-"< dM,n dM-n dMn,H -Mgn <dj,R -Rj<d ,RH<dj s-Rg< ,R4 R&,4 RB,4 R4,a R4,5 R4,",
-"8 ,R45B ,R45a R4,M <M&R4 R4,T aMn,4 R4,j <M&R5 ,R45T ,Rs4 =R, =R- ,R=B -R=a",
-" ,R=5 ->=R =R5,B >n-Ra ,R=M -R=M ,R=T -R=T ,R=j -R=j =RT,5 =Rs- ,ER4 ,R4&E ",
-"R4,H ,R4H& ,R45E ,R48E ,R4H5 ,R4H8 ,R4ME <MER4& ,R4HM ,4HaMn ,R4jE <MER5& ,",
-"R4Hj sR4,H ,R=d =d-R ,R=H g-=R =R5,d >n-Rd =RH,5 g=R-> =Rd,M =R-dM =RH,T g=",
-"R-T =Rj,d >M-dn =RH,j s=Rg- R<,P <PR& <PB,R <P&Ra <P.,R <P&R8 ,R.<PB R8<,aP",
-" S<, S<& ,TS< ,aS< ,nSj ,8S< S<T,j S<s, <P*,R R<-P ,R<P*B -Ra<P ,R<P*. -R8<",
-"P <PR*,.B R8<-Pa ,nS* S-< S<T,* -TS< S<*,j -nS8 n*jS,T s<S- RW,n W<R& ,RHW<",
-" <P&RH ,RW<. ,RW8< <P.,RH RH8<P& ,WS< W<S& Z<S, Z<S& S<W,j S8<,W SZ<,j Ss<Z",
-"& ,RW<d RW-n RH<,dP -RWg< <d.,RW -RW8< ,.RHWn* -R8g<P ,dS< -WS< SZ<,d g<S- ",
-"S<d,j S-W8< SdjZn, gS-s< o,R ,Ro& ,RoB ,Roa ,Ro5 ,Ro8 o,R5B o8,Ra So, o&S< ",
-"oTS, oaS, opS, o8S, Sp<,T s,So o,=R o-R o=,RB -Roa o=5,R -Ro> o,5=RB o->Ra ",
-"S=, S-o S,=T =TS- S,p= o-S> S=p,T S-s= ,RoW o&R,W ,RoH oH&,R o,R5W o8,RW oH",
-",R5 oH8,R SWo, S<&oW S,oZ oZ&S< Sp<,W Sp<W& oZ,Sp os,SZ vRo, =R-v ov,RH gRo",
-"- ov,R5 o-v>R =R5oH, go->R ovS, Svo- S,Z= S-go Sv,p= o-pSv S=Zp, S-yo R<U R",
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-NULL
-};
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Prepares the data for MSOPs of 4-variable functions.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_ReadMsops( char ** ppSopSizes, char *** ppSops )
-{
-    unsigned uMasks[4][2] = {
-        { 0x5555, 0xAAAA },
-        { 0x3333, 0xCCCC },
-        { 0x0F0F, 0xF0F0 },
-        { 0x00FF, 0xFF00 }
-    };
-    char Map[256], * pPrev, * pMemory;
-    char * pSopSizes, ** pSops;
-    int i, k, b, Size;
-
-    // map chars into their numbers
-    for ( i = 0; i < 256; i++ )
-        Map[i] = -1;
-    for ( i = 0; i < 81; i++ )
-        Map[s_Data3[i]] = i;
-
-    // count the number of strings
-    for ( Size = 0; s_Data4[Size] && Size < 100000; Size++ );
-    assert( Size < 100000 );
-
-    // allocate memory
-    pMemory = ALLOC( char, Size * 75 );
-    // copy the array into memory
-    for ( i = 0; i < Size; i++ )
-        for ( k = 0; k < 75; k++ )
-            if ( s_Data4[i][k] == ' ' )
-                pMemory[i*75+k] = -1;
-            else
-                pMemory[i*75+k] = Map[s_Data4[i][k]];
-
-    // set pointers and compute SOP sizes
-    pSopSizes = ALLOC( char, 65536 );
-    pSops = ALLOC( char *, 65536 );
-    pSopSizes[0] = 0;
-    pSops[0] = NULL;
-    pPrev = pMemory;
-    for ( k = 0, i = 1; i < 65536; k++ )
-        if ( pMemory[k] == -1 )
-        {
-            pSopSizes[i] = pMemory + k - pPrev; 
-            pSops[i++] = pPrev;
-            pPrev = pMemory + k + 1;
-        }
-    *ppSopSizes = pSopSizes;
-    *ppSops = pSops;
-
-    // verify the results - derive truth table from SOP
-    for ( i = 1; i < 65536; i++ )
-    {
-        int uTruth = 0, uCube, Lit;
-        for ( k = 0; k < pSopSizes[i]; k++ )
-        {
-            uCube = 0xFFFF;
-            Lit = pSops[i][k];
-            for ( b = 3; b >= 0; b-- )
-            {
-                if ( Lit % 3 == 0 )
-                    uCube &= uMasks[b][0];
-                else if ( Lit % 3 == 1 )
-                    uCube &= uMasks[b][1];
-                Lit = Lit / 3;
-            }
-            uTruth |= uCube;
-        }
-        assert( uTruth == i );
-    }
-}
-
-#if 0
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManDeriveCnfTest()
-{
-    int i, k, Lit;
-    printf( "\n" );
-    for ( i = 80; i >= 0; i-- )
-    {
-        Lit = i;
-        for ( k = 0; k < 4; k++ )
-        {
-            if ( Lit % 3 == 0 )
-                printf( "%c", 'A' + k );
-            else if ( Lit % 3 == 1 )
-                printf( "%c", 'a' + k );
-            Lit = Lit / 3;
-        }
-        printf( "\n" );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManDeriveCnfTest2()
-{
-    char s_Data3[81] = "!#&()*+,-.0123456789:;<=>?ABCDEFGHIJKLMNOPQRSTUVWXYZ[]abcdefghijklmnopqrstuvwxyz|";
-
-    unsigned uMasks[4][2] = {
-        { 0x5555, 0xAAAA },
-        { 0x3333, 0xCCCC },
-        { 0x0F0F, 0xF0F0 },
-        { 0x00FF, 0xFF00 }
-    };
-    char Buffer[100], * pCur;
-    FILE * pFile;
-    int CountCur, Counter = 0, nLines = 0;
-    int pLines[1<<16] = {0};
-    int pNums[1<<16] = {0};
-    unsigned uTruth, uTruth2, uCube, cCube;
-    char * pSops[1<<16] = {0};
-    char Sop[10];
-    char Cube[4];
-    int i, k;
-
-    pFile = fopen( "cands2.txt", "r" );
-    while ( fgets( Buffer, 100, pFile ) )
-    {
-        if ( Buffer[0] == '0' )
-            Extra_ReadHexadecimal( &uTruth2, Buffer+2, 4 );
-        else
-            uTruth2 = 0xFFFFFF;
-
-        // skip all chars till a-d or A-D
-        if ( Buffer[0] == '0' )
-        for ( pCur = Buffer; *pCur != '\n'; pCur++ )
-        {
-//            if ( *pCur >= 'a' && *pCur <= 'd' || *pCur >= 'A' && *pCur <= 'D' )
-            if ( *pCur == ':' )
-            {
-                pCur++;
-                break;
-            }
-        }
-        else
-            pCur = Buffer;
-
-
-        uTruth = 0;
-        CountCur = 0;
-        uCube = 0xFFFF;
-        for ( i = 0; i < 4; i++ )
-            Cube[i] = 2;
-
-        for ( ; *pCur; pCur++ )
-        {
-            if ( *pCur == '+' || *pCur == '\n' )
-            {
-                uTruth |= uCube;
-                uCube = 0xFFFF;
-
-                // get the cube
-                cCube = 0;
-                for ( i = 0; i < 4; i++ )
-                    cCube = 3 * cCube + Cube[i];
-                for ( i = 0; i < 4; i++ )
-                    Cube[i] = 2;
-
-                assert( cCube >= 0 && cCube < 81 );
-                Sop[CountCur] = cCube;
-                CountCur++;
-                if ( *pCur == '\n' )
-                {
-                    Sop[CountCur] = 0;
-                    break;
-                }
-            }
-            else if ( *pCur >= 'a' && *pCur <= 'd' )
-            {
-                uCube &= uMasks[*pCur-'a'][1];
-                Cube[*pCur-'a'] = 1;
-            }
-            else if ( *pCur >= 'A' && *pCur <= 'D' )
-            {
-                uCube &= uMasks[*pCur-'A'][0];
-                Cube[*pCur-'A'] = 0;
-            }
-        }
-        assert( *pCur == '\n' );
-        assert( uTruth2 == 0xFFFFFF || uTruth2 == uTruth );
-
-        Counter += CountCur;
-        pNums[uTruth] = CountCur;
-        pSops[uTruth] = ALLOC( char, CountCur );
-        memcpy( pSops[uTruth], Sop, CountCur );
-        pLines[nLines++] = Counter;
-    }
-    fclose( pFile );
-
-    printf( "Lines = %d. Counter = %d.\n", nLines, Counter );
-
-/*
-    // write the number of cubes
-    for ( i = 0; i < 65536; i++ )
-        printf( "%d,%d ", pNums[i], pNums[i] + pNums[0xffff & ~i] );
-    printf( "\n" );
-*/
-
-    // write the number of cubes
-    Counter = 0;
-    for ( i = 1; i < 65536; i++ )
-    {
-        CountCur = pNums[i];
-        assert( CountCur > 0 );
-        for ( k = 0; k <= CountCur; k++ )
-        {
-            if ( k < CountCur )
-            {
-                assert( pSops[i][k] >= 0 && pSops[i][k] < 81 );
-                printf( "%c", s_Data3[pSops[i][k]] );
-            }
-            else 
-                printf( " " );
-            if ( ++Counter == 75 )
-            {
-                printf( "\",\n\"" );
-                Counter = 0;
-            }
-        }
-    }
-    printf( "\n" );
-
-    return 1;
-}
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/cnf/cnfMan.c b/src/aig/cnf/cnfMan.c
deleted file mode 100644
index 1edc012a..00000000
--- a/src/aig/cnf/cnfMan.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnfMan.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG-to-CNF conversion.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnfMan.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cnf.h"
-#include "satSolver.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static inline int Cnf_Lit2Var( int Lit )        { return (Lit & 1)? -(Lit >> 1)-1 : (Lit >> 1)+1;  }
-static inline int Cnf_Lit2Var2( int Lit )       { return (Lit & 1)? -(Lit >> 1)   : (Lit >> 1);    }
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Cnf_Man_t * Cnf_ManStart()
-{
-    Cnf_Man_t * p;
-    int i;
-    // allocate the manager
-    p = ALLOC( Cnf_Man_t, 1 );
-    memset( p, 0, sizeof(Cnf_Man_t) );
-    // derive internal data structures
-    Cnf_ReadMsops( &p->pSopSizes, &p->pSops );
-    // allocate memory manager for cuts
-    p->pMemCuts = Aig_MmFlexStart();
-    p->nMergeLimit = 10;
-    // allocate temporary truth tables
-    p->pTruths[0] = ALLOC( unsigned, 4 * Aig_TruthWordNum(p->nMergeLimit) );
-    for ( i = 1; i < 4; i++ )
-        p->pTruths[i] = p->pTruths[i-1] + Aig_TruthWordNum(p->nMergeLimit);
-    p->vMemory = Vec_IntAlloc( 1 << 18 );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_ManStop( Cnf_Man_t * p )
-{
-    Vec_IntFree( p->vMemory );
-    free( p->pTruths[0] );
-    Aig_MmFlexStop( p->pMemCuts, 0 );
-    free( p->pSopSizes );
-    free( p->pSops[1] );
-    free( p->pSops );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the array of CI IDs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Cnf_DataCollectPiSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p )
-{
-    Vec_Int_t * vCiIds;
-    Aig_Obj_t * pObj;
-    int i;
-    vCiIds = Vec_IntAlloc( Aig_ManPiNum(p) );
-    Aig_ManForEachPi( p, pObj, i )
-        Vec_IntPush( vCiIds, pCnf->pVarNums[pObj->Id] );
-    return vCiIds;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_DataFree( Cnf_Dat_t * p )
-{
-    if ( p == NULL )
-        return;
-    free( p->pClauses[0] );
-    free( p->pClauses );
-    free( p->pVarNums );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Writes CNF into a file.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_DataWriteIntoFile( Cnf_Dat_t * p, char * pFileName, int fReadable )
-{
-    FILE * pFile;
-    int * pLit, * pStop, i;
-    pFile = fopen( pFileName, "w" );
-    if ( pFile == NULL )
-    {
-        printf( "Cnf_WriteIntoFile(): Output file cannot be opened.\n" );
-        return;
-    }
-    fprintf( pFile, "c Result of efficient AIG-to-CNF conversion using package CNF\n" );
-    fprintf( pFile, "p %d %d\n", p->nVars, p->nClauses );
-    for ( i = 0; i < p->nClauses; i++ )
-    {
-        for ( pLit = p->pClauses[i], pStop = p->pClauses[i+1]; pLit < pStop; pLit++ )
-            fprintf( pFile, "%d ", fReadable? Cnf_Lit2Var2(*pLit) : Cnf_Lit2Var(*pLit) );
-        fprintf( pFile, "0\n" );
-    }
-    fprintf( pFile, "\n" );
-    fclose( pFile );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Writes CNF into a file.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void * Cnf_DataWriteIntoSolver( Cnf_Dat_t * p )
-{
-    sat_solver * pSat;
-    int i, status;
-    pSat = sat_solver_new();
-    sat_solver_setnvars( pSat, p->nVars );
-    for ( i = 0; i < p->nClauses; i++ )
-    {
-        if ( !sat_solver_addclause( pSat, p->pClauses[i], p->pClauses[i+1] ) )
-        {
-            sat_solver_delete( pSat );
-            return NULL;
-        }
-    }
-    status = sat_solver_simplify(pSat);
-    if ( status == 0 )
-    {
-        sat_solver_delete( pSat );
-        return NULL;
-    }
-    return pSat;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/cnf/cnfMap.c b/src/aig/cnf/cnfMap.c
deleted file mode 100644
index d966df15..00000000
--- a/src/aig/cnf/cnfMap.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnfMap.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG-to-CNF conversion.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnfMap.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cnf.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area flow of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_CutAssignAreaFlow( Cnf_Man_t * p, Dar_Cut_t * pCut, int * pAreaFlows )
-{
-    Aig_Obj_t * pLeaf;
-    int i;
-    pCut->Value = 0;
-    pCut->uSign = 100 * Cnf_CutSopCost( p, pCut );
-    Dar_CutForEachLeaf( p->pManAig, pCut, pLeaf, i )
-    {
-        pCut->Value += pLeaf->nRefs;
-        if ( !Aig_ObjIsNode(pLeaf) )
-            continue;
-        assert( pLeaf->nRefs > 0 );
-        pCut->uSign += pAreaFlows[pLeaf->Id] / (pLeaf->nRefs? pLeaf->nRefs : 1);
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area flow of the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Cnf_CutSuperAreaFlow( Vec_Ptr_t * vSuper, int * pAreaFlows )
-{
-    Aig_Obj_t * pLeaf;
-    int i, nAreaFlow;
-    nAreaFlow = 100 * (Vec_PtrSize(vSuper) + 1);
-    Vec_PtrForEachEntry( vSuper, pLeaf, i )
-    {
-        pLeaf = Aig_Regular(pLeaf);
-        if ( !Aig_ObjIsNode(pLeaf) )
-            continue;
-        assert( pLeaf->nRefs > 0 );
-        nAreaFlow += pAreaFlows[pLeaf->Id] / (pLeaf->nRefs? pLeaf->nRefs : 1);
-    }
-    return nAreaFlow;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_DeriveMapping( Cnf_Man_t * p )
-{
-    Vec_Ptr_t * vSuper;
-    Aig_Obj_t * pObj;
-    Dar_Cut_t * pCut, * pCutBest;
-    int i, k, AreaFlow, * pAreaFlows;
-    // allocate area flows
-    pAreaFlows = ALLOC( int, Aig_ManObjNumMax(p->pManAig) );
-    memset( pAreaFlows, 0, sizeof(int) * Aig_ManObjNumMax(p->pManAig) );
-    // visit the nodes in the topological order and update their best cuts
-    vSuper = Vec_PtrAlloc( 100 );
-    Aig_ManForEachNode( p->pManAig, pObj, i )
-    {
-        // go through the cuts
-        pCutBest = NULL;
-        Dar_ObjForEachCut( pObj, pCut, k )
-        {
-            pCut->fBest = 0;
-            if ( k == 0 )
-                continue;
-            Cnf_CutAssignAreaFlow( p, pCut, pAreaFlows );
-            if ( pCutBest == NULL || pCutBest->uSign > pCut->uSign || 
-                (pCutBest->uSign == pCut->uSign && pCutBest->Value < pCut->Value) )
-                 pCutBest = pCut;
-        }
-        // check the big cut
-//        Aig_ObjCollectSuper( pObj, vSuper );
-        // get the area flow of this cut
-//        AreaFlow = Cnf_CutSuperAreaFlow( vSuper, pAreaFlows );
-        AreaFlow = AIG_INFINITY;
-        if ( AreaFlow >= (int)pCutBest->uSign )
-        {
-            pAreaFlows[pObj->Id] = pCutBest->uSign;
-            pCutBest->fBest = 1;
-        }
-        else
-        {
-            pAreaFlows[pObj->Id] = AreaFlow;
-            pObj->fMarkB = 1; // mark the special node
-        }
-    }
-    Vec_PtrFree( vSuper );
-    free( pAreaFlows );
-
-/*
-    // compute the area of mapping
-    AreaFlow = 0;
-    Aig_ManForEachPo( p->pManAig, pObj, i )
-        AreaFlow += Dar_ObjBestCut(Aig_ObjFanin0(pObj))->uSign / 100 / Aig_ObjFanin0(pObj)->nRefs;
-    printf( "Area of the network = %d.\n", AreaFlow );
-*/
-}
-
-
-
-#if 0
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area of the first level.]
-
-  Description [The cut need to be derefed.]
-               
-  SideEffects []
-
-  SeeAlso     []
- 
-***********************************************************************/
-void Aig_CutDeref( Aig_Man_t * p, Dar_Cut_t * pCut )
-{ 
-    Aig_Obj_t * pLeaf;
-    int i;
-    Dar_CutForEachLeaf( p, pCut, pLeaf, i )
-    {
-        assert( pLeaf->nRefs > 0 );
-        if ( --pLeaf->nRefs > 0 || !Aig_ObjIsAnd(pLeaf) )
-            continue;
-        Aig_CutDeref( p, Aig_ObjBestCut(pLeaf) );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area of the first level.]
-
-  Description [The cut need to be derefed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_CutRef( Aig_Man_t * p, Dar_Cut_t * pCut )
-{
-    Aig_Obj_t * pLeaf;
-    int i, Area = pCut->Value;
-    Dar_CutForEachLeaf( p, pCut, pLeaf, i )
-    {
-        assert( pLeaf->nRefs >= 0 );
-        if ( pLeaf->nRefs++ > 0 || !Aig_ObjIsAnd(pLeaf) )
-            continue;
-        Area += Aig_CutRef( p, Aig_ObjBestCut(pLeaf) );
-    }
-    return Area;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes exact area of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Cnf_CutArea( Aig_Man_t * p, Dar_Cut_t * pCut )
-{
-    int Area;
-    Area = Aig_CutRef( p, pCut );
-    Aig_CutDeref( p, pCut );
-    return Area;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the second cut is better.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Cnf_CutCompare( Dar_Cut_t * pC0, Dar_Cut_t * pC1 )
-{
-    if ( pC0->Area < pC1->Area - 0.0001 )
-        return -1;
-    if ( pC0->Area > pC1->Area + 0.0001 ) // smaller area flow is better
-        return 1;
-//    if ( pC0->NoRefs < pC1->NoRefs )
-//        return -1;
-//    if ( pC0->NoRefs > pC1->NoRefs ) // fewer non-referenced fanins is better
-//        return 1;
-//    if ( pC0->FanRefs / pC0->nLeaves > pC1->FanRefs / pC1->nLeaves )
-//        return -1;
-//    if ( pC0->FanRefs / pC0->nLeaves < pC1->FanRefs / pC1->nLeaves )
-//        return 1; // larger average fanin ref-counter is better
-//    return 0;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the cut with the smallest area flow.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dar_Cut_t * Cnf_ObjFindBestCut( Aig_Obj_t * pObj )
-{
-    Dar_Cut_t * pCut, * pCutBest;
-    int i;
-    pCutBest = NULL;
-    Dar_ObjForEachCut( pObj, pCut, i )
-        if ( pCutBest == NULL || Cnf_CutCompare(pCutBest, pCut) == 1 )
-            pCutBest = pCut;
-    return pCutBest;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area flow of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_CutAssignArea( Cnf_Man_t * p, Dar_Cut_t * pCut )
-{
-    Aig_Obj_t * pLeaf;
-    int i;
-    pCut->Area    = (float)pCut->Cost;
-    pCut->NoRefs  = 0;
-    pCut->FanRefs = 0;
-    Dar_CutForEachLeaf( p->pManAig, pCut, pLeaf, i )
-    {
-        if ( !Aig_ObjIsNode(pLeaf) )
-            continue;
-        if ( pLeaf->nRefs == 0 )
-        {
-            pCut->Area += Aig_ObjBestCut(pLeaf)->Cost;
-            pCut->NoRefs++;
-        }
-        else
-        {
-            if ( pCut->FanRefs + pLeaf->nRefs > 15 )
-                pCut->FanRefs = 15;
-            else
-                pCut->FanRefs += pLeaf->nRefs;
-        }
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs one round of "area recovery" using exact local area.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Cnf_ManMapForCnf( Cnf_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    Dar_Cut_t * pCut, * pCutBest;
-    int i, k;
-    // visit the nodes in the topological order and update their best cuts
-    Aig_ManForEachNode( p->pManAig, pObj, i )
-    {
-        // find the old best cut
-        pCutBest = Aig_ObjBestCut(pObj);
-        Dar_ObjClearBestCut(pCutBest);
-        // if the node is used, dereference its cut
-        if ( pObj->nRefs )
-            Aig_CutDeref( p->pManAig, pCutBest );
-
-        // evaluate the cuts of this node
-        Dar_ObjForEachCut( pObj, pCut, k )
-//            Cnf_CutAssignAreaFlow( p, pCut );
-            pCut->Area = (float)Cnf_CutArea( p->pManAig, pCut );
-
-        // find the new best cut
-        pCutBest = Cnf_ObjFindBestCut(pObj);
-        Dar_ObjSetBestCut( pCutBest );
-        // if the node is used, reference its cut
-        if ( pObj->nRefs )
-            Aig_CutRef( p->pManAig, pCutBest );
-    }
-    return 1;
-}
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/cnf/cnfPost.c b/src/aig/cnf/cnfPost.c
deleted file mode 100644
index 988275b2..00000000
--- a/src/aig/cnf/cnfPost.c
+++ /dev/null
@@ -1,233 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnfPost.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG-to-CNF conversion.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnfPost.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cnf.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_ManPostprocess_old( Cnf_Man_t * p )
-{
-//    extern int Aig_ManLargeCutEval( Aig_Man_t * p, Aig_Obj_t * pRoot, Dar_Cut_t * pCutR, Dar_Cut_t * pCutL, int Leaf );
-    int nNew, Gain, nGain = 0, nVars = 0;
-
-    Aig_Obj_t * pObj, * pFan;
-    Dar_Cut_t * pCutBest, * pCut;
-    int i, k;//, a, b, Counter;
-    Aig_ManForEachObj( p->pManAig, pObj, i )
-    {
-        if ( !Aig_ObjIsNode(pObj) )
-            continue;
-        if ( pObj->nRefs == 0 )
-            continue;
-//        pCutBest = Aig_ObjBestCut(pObj);
-        pCutBest = NULL;
-
-        Dar_CutForEachLeaf( p->pManAig, pCutBest, pFan, k )
-        {
-            if ( !Aig_ObjIsNode(pFan) )
-                continue;
-            assert( pFan->nRefs != 0 );
-            if ( pFan->nRefs != 1 )
-                continue;
-//            pCut = Aig_ObjBestCut(pFan);
-            pCut = NULL;
-/*
-            // find how many common variable they have
-            Counter = 0;
-            for ( a = 0; a < (int)pCut->nLeaves; a++ )
-            {
-                for ( b = 0; b < (int)pCutBest->nLeaves; b++ )
-                    if ( pCut->pLeaves[a] == pCutBest->pLeaves[b] )
-                        break;
-                if ( b == (int)pCutBest->nLeaves )
-                    continue;
-                Counter++;
-            }
-            printf( "%d ", Counter );
-*/
-            // find the new truth table after collapsing these two cuts
-
-
-//            nNew = Aig_ManLargeCutEval( p->pManAig, pObj, pCutBest, pCut, pFan->Id );
-            nNew = 0;
-
-
-//            printf( "%d+%d=%d:%d(%d) ", pCutBest->Cost, pCut->Cost, 
-//                pCutBest->Cost+pCut->Cost, nNew, pCutBest->Cost+pCut->Cost-nNew );
-
-            Gain = pCutBest->Value + pCut->Value - nNew;
-            if ( Gain > 0 )
-            {
-                nGain += Gain;
-                nVars++;
-            }
-        }
-    }
-    printf( "Total gain = %d.  Vars = %d.\n", nGain, nVars );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers cuts of the mapped nodes into internal representation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_ManTransferCuts( Cnf_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_MmFlexRestart( p->pMemCuts );
-    Aig_ManForEachObj( p->pManAig, pObj, i )
-    {
-        if ( Aig_ObjIsNode(pObj) && pObj->nRefs > 0 )
-            pObj->pData = Cnf_CutCreate( p, pObj );
-        else
-            pObj->pData = NULL;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers cuts of the mapped nodes into internal representation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_ManFreeCuts( Cnf_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManForEachObj( p->pManAig, pObj, i )
-        if ( pObj->pData )
-        {
-            Cnf_CutFree( pObj->pData );
-            pObj->pData = NULL;
-        }
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_ManPostprocess( Cnf_Man_t * p )
-{
-    Cnf_Cut_t * pCut, * pCutFan, * pCutRes;
-    Aig_Obj_t * pObj, * pFan;
-    int Order[16], Costs[16];
-    int i, k, fChanges;
-    Aig_ManForEachNode( p->pManAig, pObj, i )
-    {
-        if ( pObj->nRefs == 0 )
-            continue;
-        pCut = Cnf_ObjBestCut(pObj);
-
-        // sort fanins according to their size
-        Cnf_CutForEachLeaf( p->pManAig, pCut, pFan, k )
-        {
-            Order[k] = k;
-            Costs[k] = Aig_ObjIsNode(pFan)? Cnf_ObjBestCut(pFan)->Cost : 0;
-        }
-        // sort the cuts by Weight
-        do {
-            int Temp;
-            fChanges = 0;
-            for ( k = 0; k < pCut->nFanins - 1; k++ )
-            {
-                if ( Costs[Order[k]] <= Costs[Order[k+1]] )
-                    continue;
-                Temp = Order[k];
-                Order[k] = Order[k+1];
-                Order[k+1] = Temp;
-                fChanges = 1;
-            }
-        } while ( fChanges );
-
-
-//        Cnf_CutForEachLeaf( p->pManAig, pCut, pFan, k )
-        for ( k = 0; (k < (int)(pCut)->nFanins) && ((pFan) = Aig_ManObj(p->pManAig, (pCut)->pFanins[Order[k]])); k++ )
-        {
-            if ( !Aig_ObjIsNode(pFan) )
-                continue;
-            assert( pFan->nRefs != 0 );
-            if ( pFan->nRefs != 1 )
-                continue;
-            pCutFan = Cnf_ObjBestCut(pFan);
-            // try composing these two cuts
-//            Cnf_CutPrint( pCut );
-            pCutRes = Cnf_CutCompose( p, pCut, pCutFan, pFan->Id );
-//            Cnf_CutPrint( pCut );
-//            printf( "\n" );
-            // check if the cost if reduced
-            if ( pCutRes == NULL || pCutRes->Cost == 127 || pCutRes->Cost > pCut->Cost + pCutFan->Cost )
-            {
-                if ( pCutRes )
-                    Cnf_CutFree( pCutRes );
-                continue;
-            }
-            // update the cut
-            Cnf_ObjSetBestCut( pObj, pCutRes );
-            Cnf_ObjSetBestCut( pFan, NULL );
-            Cnf_CutUpdateRefs( p, pCut, pCutFan, pCutRes );
-            assert( pFan->nRefs == 0 );
-            Cnf_CutFree( pCut );
-            Cnf_CutFree( pCutFan );
-            break;
-        }
-    }
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/cnf/cnfUtil.c b/src/aig/cnf/cnfUtil.c
deleted file mode 100644
index cd47cb58..00000000
--- a/src/aig/cnf/cnfUtil.c
+++ /dev/null
@@ -1,188 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnfUtil.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG-to-CNF conversion.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnfUtil.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cnf.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area, references, and nodes used in the mapping.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManScanMapping_rec( Cnf_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vMapped )
-{
-    Aig_Obj_t * pLeaf;
-    Dar_Cut_t * pCutBest;
-    int aArea, i;
-    if ( pObj->nRefs++ || Aig_ObjIsPi(pObj) || Aig_ObjIsConst1(pObj) )
-        return 0;
-    assert( Aig_ObjIsAnd(pObj) );
-    // collect the node first to derive pre-order
-    if ( vMapped )
-        Vec_PtrPush( vMapped, pObj );
-    // visit the transitive fanin of the selected cut
-    if ( pObj->fMarkB )
-    {
-        Vec_Ptr_t * vSuper = Vec_PtrAlloc( 100 );
-        Aig_ObjCollectSuper( pObj, vSuper );
-        aArea = Vec_PtrSize(vSuper) + 1;
-        Vec_PtrForEachEntry( vSuper, pLeaf, i )
-            aArea += Aig_ManScanMapping_rec( p, Aig_Regular(pLeaf), vMapped );
-        Vec_PtrFree( vSuper );
-        ////////////////////////////
-        pObj->fMarkB = 1;
-    }
-    else
-    {
-        pCutBest = Dar_ObjBestCut( pObj );
-        aArea = Cnf_CutSopCost( p, pCutBest );
-        Dar_CutForEachLeaf( p->pManAig, pCutBest, pLeaf, i )
-            aArea += Aig_ManScanMapping_rec( p, pLeaf, vMapped );
-    }
-    return aArea;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area, references, and nodes used in the mapping.]
-
-  Description [Collects the nodes in reverse topological order.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Aig_ManScanMapping( Cnf_Man_t * p, int fCollect )
-{
-    Vec_Ptr_t * vMapped = NULL;
-    Aig_Obj_t * pObj;
-    int i;
-    // clean all references
-    Aig_ManForEachObj( p->pManAig, pObj, i )
-        pObj->nRefs = 0;
-    // allocate the array
-    if ( fCollect )
-        vMapped = Vec_PtrAlloc( 1000 );
-    // collect nodes reachable from POs in the DFS order through the best cuts
-    p->aArea = 0;
-    Aig_ManForEachPo( p->pManAig, pObj, i )
-        p->aArea += Aig_ManScanMapping_rec( p, Aig_ObjFanin0(pObj), vMapped );
-//    printf( "Variables = %6d. Clauses = %8d.\n", vMapped? Vec_PtrSize(vMapped) + Aig_ManPiNum(p->pManAig) + 1 : 0, p->aArea + 2 );
-    return vMapped;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area, references, and nodes used in the mapping.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Cnf_ManScanMapping_rec( Cnf_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vMapped, int fPreorder )
-{
-    Aig_Obj_t * pLeaf;
-    Cnf_Cut_t * pCutBest;
-    int aArea, i;
-    if ( pObj->nRefs++ || Aig_ObjIsPi(pObj) || Aig_ObjIsConst1(pObj) )
-        return 0;
-    assert( Aig_ObjIsAnd(pObj) );
-    assert( pObj->pData != NULL );
-    // add the node to the mapping
-    if ( vMapped && fPreorder )
-         Vec_PtrPush( vMapped, pObj );
-    // visit the transitive fanin of the selected cut
-    if ( pObj->fMarkB )
-    {
-        Vec_Ptr_t * vSuper = Vec_PtrAlloc( 100 );
-        Aig_ObjCollectSuper( pObj, vSuper );
-        aArea = Vec_PtrSize(vSuper) + 1;
-        Vec_PtrForEachEntry( vSuper, pLeaf, i )
-            aArea += Cnf_ManScanMapping_rec( p, Aig_Regular(pLeaf), vMapped, fPreorder );
-        Vec_PtrFree( vSuper );
-        ////////////////////////////
-        pObj->fMarkB = 1;
-    }
-    else
-    {
-        pCutBest = pObj->pData;
-        assert( pCutBest->Cost < 127 );
-        aArea = pCutBest->Cost;
-        Cnf_CutForEachLeaf( p->pManAig, pCutBest, pLeaf, i )
-            aArea += Cnf_ManScanMapping_rec( p, pLeaf, vMapped, fPreorder );
-    }
-    // add the node to the mapping
-    if ( vMapped && !fPreorder )
-         Vec_PtrPush( vMapped, pObj );
-    return aArea;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area, references, and nodes used in the mapping.]
-
-  Description [Collects the nodes in reverse topological order.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Cnf_ManScanMapping( Cnf_Man_t * p, int fCollect, int fPreorder )
-{
-    Vec_Ptr_t * vMapped = NULL;
-    Aig_Obj_t * pObj;
-    int i;
-    // clean all references
-    Aig_ManForEachObj( p->pManAig, pObj, i )
-        pObj->nRefs = 0;
-    // allocate the array
-    if ( fCollect )
-        vMapped = Vec_PtrAlloc( 1000 );
-    // collect nodes reachable from POs in the DFS order through the best cuts
-    p->aArea = 0;
-    Aig_ManForEachPo( p->pManAig, pObj, i )
-        p->aArea += Cnf_ManScanMapping_rec( p, Aig_ObjFanin0(pObj), vMapped, fPreorder );
-//    printf( "Variables = %6d. Clauses = %8d.\n", vMapped? Vec_PtrSize(vMapped) + Aig_ManPiNum(p->pManAig) + 1 : 0, p->aArea + 2 );
-    return vMapped;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/cnf/cnfWrite.c b/src/aig/cnf/cnfWrite.c
deleted file mode 100644
index 45a3efad..00000000
--- a/src/aig/cnf/cnfWrite.c
+++ /dev/null
@@ -1,443 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnfWrite.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG-to-CNF conversion.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnfWrite.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cnf.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the cover into the array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cnf_SopConvertToVector( char * pSop, int nCubes, Vec_Int_t * vCover )
-{
-    int Lits[4], Cube, iCube, i, b;
-    Vec_IntClear( vCover );
-    for ( i = 0; i < nCubes; i++ )
-    {
-        Cube = pSop[i];
-        for ( b = 0; b < 4; b++ )
-        {
-            if ( Cube % 3 == 0 )
-                Lits[b] = 1;
-            else if ( Cube % 3 == 1 )
-                Lits[b] = 2;
-            else
-                Lits[b] = 0;
-            Cube = Cube / 3;
-        }
-        iCube = 0;
-        for ( b = 0; b < 4; b++ )
-            iCube = (iCube << 2) | Lits[b];
-        Vec_IntPush( vCover, iCube );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of literals in the SOP.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Cnf_SopCountLiterals( char * pSop, int nCubes )
-{
-    int nLits = 0, Cube, i, b;
-    for ( i = 0; i < nCubes; i++ )
-    {
-        Cube = pSop[i];
-        for ( b = 0; b < 4; b++ )
-        {
-            if ( Cube % 3 != 2 )
-                nLits++;
-            Cube = Cube / 3;
-        }
-    }
-    return nLits;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of literals in the SOP.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Cnf_IsopCountLiterals( Vec_Int_t * vIsop, int nVars )
-{
-    int nLits = 0, Cube, i, b;
-    Vec_IntForEachEntry( vIsop, Cube, i )
-    {
-        for ( b = 0; b < nVars; b++ )
-        {
-            if ( (Cube & 3) == 1 || (Cube & 3) == 2 )
-                nLits++;
-            Cube >>= 2;
-        }
-    }
-    return nLits;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the cube and returns the number of literals in it.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Cnf_IsopWriteCube( int Cube, int nVars, int * pVars, int * pLiterals )
-{
-    int nLits = nVars, b;
-    for ( b = 0; b < nVars; b++ )
-    {
-        if ( (Cube & 3) == 1 ) // value 0 --> write positive literal
-            *pLiterals++ = 2 * pVars[b];
-        else if ( (Cube & 3) == 2 ) // value 1 --> write negative literal
-            *pLiterals++ = 2 * pVars[b] + 1;
-        else
-            nLits--;
-        Cube >>= 2;
-    }
-    return nLits;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives CNF for the mapping.]
-
-  Description [The last argument shows the number of last outputs
-  of the manager, which will not be converted into clauses but the
-  new variables for which will be introduced.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Cnf_Dat_t * Cnf_ManWriteCnf( Cnf_Man_t * p, Vec_Ptr_t * vMapped, int nOutputs )
-{
-    Aig_Obj_t * pObj;
-    Cnf_Dat_t * pCnf;
-    Cnf_Cut_t * pCut;
-    Vec_Int_t * vCover, * vSopTemp;
-    int OutVar, PoVar, pVars[32], * pLits, ** pClas;
-    unsigned uTruth;
-    int i, k, nLiterals, nClauses, Cube, Number;
-
-    // count the number of literals and clauses
-    nLiterals = 1 + Aig_ManPoNum( p->pManAig ) + 3 * nOutputs;
-    nClauses = 1 + Aig_ManPoNum( p->pManAig ) + nOutputs;
-    Vec_PtrForEachEntry( vMapped, pObj, i )
-    {
-        assert( Aig_ObjIsNode(pObj) );
-        pCut = Cnf_ObjBestCut( pObj );
-
-        // positive polarity of the cut
-        if ( pCut->nFanins < 5 )
-        {
-            uTruth = 0xFFFF & *Cnf_CutTruth(pCut);
-            nLiterals += Cnf_SopCountLiterals( p->pSops[uTruth], p->pSopSizes[uTruth] ) + p->pSopSizes[uTruth];
-            assert( p->pSopSizes[uTruth] >= 0 );
-            nClauses += p->pSopSizes[uTruth];
-        }
-        else
-        {
-            nLiterals += Cnf_IsopCountLiterals( pCut->vIsop[1], pCut->nFanins ) + Vec_IntSize(pCut->vIsop[1]);
-            nClauses += Vec_IntSize(pCut->vIsop[1]);
-        }
-        // negative polarity of the cut
-        if ( pCut->nFanins < 5 )
-        {
-            uTruth = 0xFFFF & ~*Cnf_CutTruth(pCut);
-            nLiterals += Cnf_SopCountLiterals( p->pSops[uTruth], p->pSopSizes[uTruth] ) + p->pSopSizes[uTruth];
-            assert( p->pSopSizes[uTruth] >= 0 );
-            nClauses += p->pSopSizes[uTruth];
-        }
-        else
-        {
-            nLiterals += Cnf_IsopCountLiterals( pCut->vIsop[0], pCut->nFanins ) + Vec_IntSize(pCut->vIsop[0]);
-            nClauses += Vec_IntSize(pCut->vIsop[0]);
-        }
-//printf( "%d ", nClauses-(1 + Aig_ManPoNum( p->pManAig )) );
-    }
-//printf( "\n" );
-
-    // allocate CNF
-    pCnf = ALLOC( Cnf_Dat_t, 1 );
-    memset( pCnf, 0, sizeof(Cnf_Dat_t) );
-    pCnf->nLiterals = nLiterals;
-    pCnf->nClauses = nClauses;
-    pCnf->pClauses = ALLOC( int *, nClauses + 1 );
-    pCnf->pClauses[0] = ALLOC( int, nLiterals );
-    pCnf->pClauses[nClauses] = pCnf->pClauses[0] + nLiterals;
-
-    // create room for variable numbers
-    pCnf->pVarNums = ALLOC( int, Aig_ManObjNumMax(p->pManAig) );
-    memset( pCnf->pVarNums, 0xff, sizeof(int) * Aig_ManObjNumMax(p->pManAig) );
-    // assign variables to the last (nOutputs) POs
-    Number = 1;
-    if ( nOutputs )
-    {
-        assert( nOutputs == Aig_ManRegNum(p->pManAig) );
-        Aig_ManForEachLiSeq( p->pManAig, pObj, i )
-            pCnf->pVarNums[pObj->Id] = Number++;
-    }
-    // assign variables to the internal nodes
-    Vec_PtrForEachEntry( vMapped, pObj, i )
-        pCnf->pVarNums[pObj->Id] = Number++;
-    // assign variables to the PIs and constant node
-    Aig_ManForEachPi( p->pManAig, pObj, i )
-        pCnf->pVarNums[pObj->Id] = Number++;
-    pCnf->pVarNums[Aig_ManConst1(p->pManAig)->Id] = Number++;
-    pCnf->nVars = Number;
-
-    // assign the clauses
-    vSopTemp = Vec_IntAlloc( 1 << 16 );
-    pLits = pCnf->pClauses[0];
-    pClas = pCnf->pClauses;
-    Vec_PtrForEachEntry( vMapped, pObj, i )
-    {
-        pCut = Cnf_ObjBestCut( pObj );
-
-        // save variables of this cut
-        OutVar = pCnf->pVarNums[ pObj->Id ];
-        for ( k = 0; k < (int)pCut->nFanins; k++ )
-        {
-            pVars[k] = pCnf->pVarNums[ pCut->pFanins[k] ];
-            assert( pVars[k] <= Aig_ManObjNumMax(p->pManAig) );
-        }
-
-        // positive polarity of the cut
-        if ( pCut->nFanins < 5 )
-        {
-            uTruth = 0xFFFF & *Cnf_CutTruth(pCut);
-            Cnf_SopConvertToVector( p->pSops[uTruth], p->pSopSizes[uTruth], vSopTemp );
-            vCover = vSopTemp;
-        }
-        else
-            vCover = pCut->vIsop[1];
-        Vec_IntForEachEntry( vCover, Cube, k )
-        {
-            *pClas++ = pLits;
-            *pLits++ = 2 * OutVar; 
-            pLits += Cnf_IsopWriteCube( Cube, pCut->nFanins, pVars, pLits );
-        }
-
-        // negative polarity of the cut
-        if ( pCut->nFanins < 5 )
-        {
-            uTruth = 0xFFFF & ~*Cnf_CutTruth(pCut);
-            Cnf_SopConvertToVector( p->pSops[uTruth], p->pSopSizes[uTruth], vSopTemp );
-            vCover = vSopTemp;
-        }
-        else
-            vCover = pCut->vIsop[0];
-        Vec_IntForEachEntry( vCover, Cube, k )
-        {
-            *pClas++ = pLits;
-            *pLits++ = 2 * OutVar + 1; 
-            pLits += Cnf_IsopWriteCube( Cube, pCut->nFanins, pVars, pLits );
-        }
-    }
-    Vec_IntFree( vSopTemp );
- 
-    // write the constant literal
-    OutVar = pCnf->pVarNums[ Aig_ManConst1(p->pManAig)->Id ];
-    assert( OutVar <= Aig_ManObjNumMax(p->pManAig) );
-    *pClas++ = pLits;
-    *pLits++ = 2 * OutVar; 
-
-    // write the output literals
-    Aig_ManForEachPo( p->pManAig, pObj, i )
-    {
-        OutVar = pCnf->pVarNums[ Aig_ObjFanin0(pObj)->Id ];
-        if ( i < Aig_ManPoNum(p->pManAig) - nOutputs )
-        {
-            *pClas++ = pLits;
-            *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); 
-        }
-        else
-        {
-            PoVar = pCnf->pVarNums[ pObj->Id ];
-            // first clause
-            *pClas++ = pLits;
-            *pLits++ = 2 * PoVar; 
-            *pLits++ = 2 * OutVar + !Aig_ObjFaninC0(pObj); 
-            // second clause
-            *pClas++ = pLits;
-            *pLits++ = 2 * PoVar + 1; 
-            *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); 
-        }
-    }
-
-    // verify that the correct number of literals and clauses was written
-    assert( pLits - pCnf->pClauses[0] == nLiterals );
-    assert( pClas - pCnf->pClauses == nClauses );
-    return pCnf;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Derives a simple CNF for the AIG.]
-
-  Description [The last argument shows the number of last outputs
-  of the manager, which will not be converted into clauses but the
-  new variables for which will be introduced.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Cnf_Dat_t * Cnf_DeriveSimple( Aig_Man_t * p, int nOutputs )
-{
-    Aig_Obj_t * pObj;
-    Cnf_Dat_t * pCnf;
-    int OutVar, PoVar, pVars[32], * pLits, ** pClas;
-    int i, nLiterals, nClauses, Number;
-
-    // count the number of literals and clauses
-    nLiterals = 1 + 7 * Aig_ManNodeNum(p) + Aig_ManPoNum( p ) + 3 * nOutputs;
-    nClauses = 1 + 3 * Aig_ManNodeNum(p) + Aig_ManPoNum( p ) + nOutputs;
-
-    // allocate CNF
-    pCnf = ALLOC( Cnf_Dat_t, 1 );
-    memset( pCnf, 0, sizeof(Cnf_Dat_t) );
-    pCnf->nLiterals = nLiterals;
-    pCnf->nClauses = nClauses;
-    pCnf->pClauses = ALLOC( int *, nClauses + 1 );
-    pCnf->pClauses[0] = ALLOC( int, nLiterals );
-    pCnf->pClauses[nClauses] = pCnf->pClauses[0] + nLiterals;
-
-    // create room for variable numbers
-    pCnf->pVarNums = ALLOC( int, Aig_ManObjNumMax(p) );
-    memset( pCnf->pVarNums, 0xff, sizeof(int) * Aig_ManObjNumMax(p) );
-    // assign variables to the last (nOutputs) POs
-    Number = 1;
-    if ( nOutputs )
-    {
-        assert( nOutputs == Aig_ManRegNum(p) );
-        Aig_ManForEachLiSeq( p, pObj, i )
-            pCnf->pVarNums[pObj->Id] = Number++;
-    }
-    // assign variables to the internal nodes
-    Aig_ManForEachNode( p, pObj, i )
-        pCnf->pVarNums[pObj->Id] = Number++;
-    // assign variables to the PIs and constant node
-    Aig_ManForEachPi( p, pObj, i )
-        pCnf->pVarNums[pObj->Id] = Number++;
-    pCnf->pVarNums[Aig_ManConst1(p)->Id] = Number++;
-    pCnf->nVars = Number;
-/*
-    // print CNF numbers
-    printf( "SAT numbers of each node:\n" );
-    Aig_ManForEachObj( p, pObj, i )
-        printf( "%d=%d ", pObj->Id, pCnf->pVarNums[pObj->Id] );
-    printf( "\n" );
-*/
-    // assign the clauses
-    pLits = pCnf->pClauses[0];
-    pClas = pCnf->pClauses;
-    Aig_ManForEachNode( p, pObj, i )
-    {
-        OutVar   = pCnf->pVarNums[ pObj->Id ];
-        pVars[0] = pCnf->pVarNums[ Aig_ObjFanin0(pObj)->Id ];
-        pVars[1] = pCnf->pVarNums[ Aig_ObjFanin1(pObj)->Id ];
-
-        // positive phase
-        *pClas++ = pLits;
-        *pLits++ = 2 * OutVar; 
-        *pLits++ = 2 * pVars[0] + !Aig_ObjFaninC0(pObj); 
-        *pLits++ = 2 * pVars[1] + !Aig_ObjFaninC1(pObj); 
-        // negative phase
-        *pClas++ = pLits;
-        *pLits++ = 2 * OutVar + 1; 
-        *pLits++ = 2 * pVars[0] + Aig_ObjFaninC0(pObj); 
-        *pClas++ = pLits;
-        *pLits++ = 2 * OutVar + 1; 
-        *pLits++ = 2 * pVars[1] + Aig_ObjFaninC1(pObj); 
-    }
- 
-    // write the constant literal
-    OutVar = pCnf->pVarNums[ Aig_ManConst1(p)->Id ];
-    assert( OutVar <= Aig_ManObjNumMax(p) );
-    *pClas++ = pLits;
-    *pLits++ = 2 * OutVar; 
-
-    // write the output literals
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        OutVar = pCnf->pVarNums[ Aig_ObjFanin0(pObj)->Id ];
-        if ( i < Aig_ManPoNum(p) - nOutputs )
-        {
-            *pClas++ = pLits;
-            *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); 
-        }
-        else
-        {
-            PoVar  = pCnf->pVarNums[ pObj->Id ];
-            // first clause
-            *pClas++ = pLits;
-            *pLits++ = 2 * PoVar; 
-            *pLits++ = 2 * OutVar + !Aig_ObjFaninC0(pObj); 
-            // second clause
-            *pClas++ = pLits;
-            *pLits++ = 2 * PoVar + 1; 
-            *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); 
-        }
-    }
-
-    // verify that the correct number of literals and clauses was written
-    assert( pLits - pCnf->pClauses[0] == nLiterals );
-    assert( pClas - pCnf->pClauses == nClauses );
-    return pCnf;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/cnf/cnf_.c b/src/aig/cnf/cnf_.c
deleted file mode 100644
index 7c9ca499..00000000
--- a/src/aig/cnf/cnf_.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cnf_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG-to-CNF conversion.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: cnf_.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cnf.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/cnf/module.make b/src/aig/cnf/module.make
deleted file mode 100644
index dbcaeba4..00000000
--- a/src/aig/cnf/module.make
+++ /dev/null
@@ -1,8 +0,0 @@
-SRC +=    src/aig/cnf/cnfCore.c \
-    src/aig/cnf/cnfCut.c \
-    src/aig/cnf/cnfData.c \
-    src/aig/cnf/cnfMan.c \
-    src/aig/cnf/cnfMap.c \
-    src/aig/cnf/cnfPost.c \
-    src/aig/cnf/cnfUtil.c \
-    src/aig/cnf/cnfWrite.c 
diff --git a/src/aig/csw/csw.h b/src/aig/csw/csw.h
deleted file mode 100644
index 1443f4d9..00000000
--- a/src/aig/csw/csw.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [csw.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Cut sweeping.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - July 11, 2007.]
-
-  Revision    [$Id: csw.h,v 1.00 2007/07/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
- 
-#ifndef __CSW_H__
-#define __CSW_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                           ITERATORS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== cnfCore.c ========================================================*/
-extern Aig_Man_t *     Csw_Sweep( Aig_Man_t * pAig, int nCutsMax, int nLeafMax, int fVerbose );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/csw/cswCore.c b/src/aig/csw/cswCore.c
deleted file mode 100644
index 20893058..00000000
--- a/src/aig/csw/cswCore.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cswCore.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Cut sweeping.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - July 11, 2007.]
-
-  Revision    [$Id: cswCore.c,v 1.00 2007/07/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cswInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Csw_Sweep( Aig_Man_t * pAig, int nCutsMax, int nLeafMax, int fVerbose )
-{
-    Csw_Man_t * p;
-    Aig_Man_t * pRes;
-    Aig_Obj_t * pObj, * pObjNew, * pObjRes;
-    int i, clk;
-clk = clock();
-    // start the manager
-    p = Csw_ManStart( pAig, nCutsMax, nLeafMax, fVerbose );
-    // set elementary cuts at the PIs
-    Aig_ManForEachPi( p->pManRes, pObj, i )
-    {
-        Csw_ObjPrepareCuts( p, pObj, 1 );
-        Csw_ObjAddRefs( p, pObj, Aig_ManPi(p->pManAig,i)->nRefs );
-    }
-    // process the nodes
-    Aig_ManForEachNode( pAig, pObj, i )
-    {
-        // create the new node
-        pObjNew = Aig_And( p->pManRes, Csw_ObjChild0Equiv(p, pObj), Csw_ObjChild1Equiv(p, pObj) );
-        // check if this node can be represented using another node
-//        pObjRes = Csw_ObjSweep( p, Aig_Regular(pObjNew), pObj->nRefs > 1 );
-//        pObjRes = Aig_NotCond( pObjRes, Aig_IsComplement(pObjNew) );
-        // try recursively if resubsitution is used
-        do {
-            pObjRes = Csw_ObjSweep( p, Aig_Regular(pObjNew), pObj->nRefs > 1 );
-            pObjRes = Aig_NotCond( pObjRes, Aig_IsComplement(pObjNew) );        
-            pObjNew = pObjRes;
-        } while ( Csw_ObjCuts(p, Aig_Regular(pObjNew)) == NULL && !Aig_ObjIsConst1(Aig_Regular(pObjNew)) );
-        // save the resulting node
-        Csw_ObjSetEquiv( p, pObj, pObjRes );
-        // add to the reference counter
-        Csw_ObjAddRefs( p, Aig_Regular(pObjRes), pObj->nRefs );
-    }
-    // add the POs
-    Aig_ManForEachPo( pAig, pObj, i )
-        Aig_ObjCreatePo( p->pManRes, Csw_ObjChild0Equiv(p, pObj) );
-    // remove dangling nodes 
-    Aig_ManCleanup( p->pManRes );
-    // return the resulting manager
-p->timeTotal = clock() - clk;
-p->timeOther = p->timeTotal - p->timeCuts - p->timeHash;
-    pRes = p->pManRes;
-    Csw_ManStop( p );
-    return pRes;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/csw/cswCut.c b/src/aig/csw/cswCut.c
deleted file mode 100644
index b3b7152b..00000000
--- a/src/aig/csw/cswCut.c
+++ /dev/null
@@ -1,602 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cswCut.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Cut sweeping.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - July 11, 2007.]
-
-  Revision    [$Id: cswCut.c,v 1.00 2007/07/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cswInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Compute the cost of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Csw_CutFindCost( Csw_Man_t * p, Csw_Cut_t * pCut )
-{
-    Aig_Obj_t * pLeaf;
-    int i, Cost = 0;
-    assert( pCut->nFanins > 0 );
-    Csw_CutForEachLeaf( p->pManRes, pCut, pLeaf, i )
-    {
-//        Cost += pLeaf->nRefs;
-        Cost += Csw_ObjRefs( p, pLeaf );
-//        printf( "%d ", pLeaf->nRefs );
-    }
-//printf( "\n" );
-    return Cost * 100 / pCut->nFanins;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compute the cost of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline float Csw_CutFindCost2( Csw_Man_t * p, Csw_Cut_t * pCut )
-{
-    Aig_Obj_t * pLeaf;
-    float Cost = 0.0;
-    int i;
-    assert( pCut->nFanins > 0 );
-    Csw_CutForEachLeaf( p->pManRes, pCut, pLeaf, i )
-        Cost += (float)1.0/pLeaf->nRefs;
-    return 1/Cost;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the next free cut to use.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Csw_Cut_t * Csw_CutFindFree( Csw_Man_t * p, Aig_Obj_t * pObj )
-{
-    Csw_Cut_t * pCut, * pCutMax;
-    int i;
-    pCutMax = NULL;
-    Csw_ObjForEachCut( p, pObj, pCut, i )
-    {
-        if ( pCut->nFanins == 0 )
-            return pCut;
-        if ( pCutMax == NULL || pCutMax->Cost < pCut->Cost )
-            pCutMax = pCut;
-    }
-    assert( pCutMax != NULL );
-    pCutMax->nFanins = 0;
-    return pCutMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the stretching phase of the cut w.r.t. the merged cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Cut_TruthPhase( Csw_Cut_t * pCut, Csw_Cut_t * pCut1 )
-{
-    unsigned uPhase = 0;
-    int i, k;
-    for ( i = k = 0; i < pCut->nFanins; i++ )
-    {
-        if ( k == pCut1->nFanins )
-            break;
-        if ( pCut->pFanins[i] < pCut1->pFanins[k] )
-            continue;
-        assert( pCut->pFanins[i] == pCut1->pFanins[k] );
-        uPhase |= (1 << i);
-        k++;
-    }
-    return uPhase;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs truth table computation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Csw_CutComputeTruth( Csw_Man_t * p, Csw_Cut_t * pCut, Csw_Cut_t * pCut0, Csw_Cut_t * pCut1, int fCompl0, int fCompl1 )
-{
-    // permute the first table
-    if ( fCompl0 ) 
-        Kit_TruthNot( p->puTemp[0], Csw_CutTruth(pCut0), p->nLeafMax );
-    else
-        Kit_TruthCopy( p->puTemp[0], Csw_CutTruth(pCut0), p->nLeafMax );
-    Kit_TruthStretch( p->puTemp[2], p->puTemp[0], pCut0->nFanins, p->nLeafMax, Cut_TruthPhase(pCut, pCut0), 0 );
-    // permute the second table
-    if ( fCompl1 ) 
-        Kit_TruthNot( p->puTemp[1], Csw_CutTruth(pCut1), p->nLeafMax );
-    else
-        Kit_TruthCopy( p->puTemp[1], Csw_CutTruth(pCut1), p->nLeafMax );
-    Kit_TruthStretch( p->puTemp[3], p->puTemp[1], pCut1->nFanins, p->nLeafMax, Cut_TruthPhase(pCut, pCut1), 0 );
-    // produce the resulting table
-    Kit_TruthAnd( Csw_CutTruth(pCut), p->puTemp[2], p->puTemp[3], p->nLeafMax );
-//    assert( pCut->nFanins >= Kit_TruthSupportSize( Csw_CutTruth(pCut), p->nLeafMax ) );
-    return Csw_CutTruth(pCut);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs support minimization for the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Csw_CutSupportMinimize( Csw_Man_t * p, Csw_Cut_t * pCut )
-{
-    unsigned * pTruth;
-    int uSupp, nFansNew, i, k;
-    // get truth table
-    pTruth = Csw_CutTruth( pCut );
-    // get support 
-    uSupp = Kit_TruthSupport( pTruth, p->nLeafMax );
-    // get the new support size
-    nFansNew = Kit_WordCountOnes( uSupp );
-    // check if there are redundant variables
-    if ( nFansNew == pCut->nFanins )
-        return nFansNew;
-    assert( nFansNew < pCut->nFanins );
-    // minimize support
-    Kit_TruthShrink( p->puTemp[0], pTruth, nFansNew, p->nLeafMax, uSupp, 1 );
-    for ( i = k = 0; i < pCut->nFanins; i++ )
-        if ( uSupp & (1 << i) )
-            pCut->pFanins[k++] = pCut->pFanins[i];
-    assert( k == nFansNew );
-    pCut->nFanins = nFansNew;
-//    assert( nFansNew == Kit_TruthSupportSize( pTruth, p->nLeafMax ) );
-//Extra_PrintBinary( stdout, pTruth, (1<<p->nLeafMax) ); printf( "\n" );
-    return nFansNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if pDom is contained in pCut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Csw_CutCheckDominance( Csw_Cut_t * pDom, Csw_Cut_t * pCut )
-{
-    int i, k;
-    for ( i = 0; i < (int)pDom->nFanins; i++ )
-    {
-        for ( k = 0; k < (int)pCut->nFanins; k++ )
-            if ( pDom->pFanins[i] == pCut->pFanins[k] )
-                break;
-        if ( k == (int)pCut->nFanins ) // node i in pDom is not contained in pCut
-            return 0;
-    }
-    // every node in pDom is contained in pCut
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the cut is contained.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Csw_CutFilter( Csw_Man_t * p, Aig_Obj_t * pObj, Csw_Cut_t * pCut )
-{ 
-    Csw_Cut_t * pTemp;
-    int i;
-    // go through the cuts of the node
-    Csw_ObjForEachCut( p, pObj, pTemp, i )
-    {
-        if ( pTemp->nFanins < 2 )
-            continue;
-        if ( pTemp == pCut )
-            continue;
-        if ( pTemp->nFanins > pCut->nFanins )
-        {
-            // skip the non-contained cuts
-            if ( (pTemp->uSign & pCut->uSign) != pCut->uSign )
-                continue;
-            // check containment seriously
-            if ( Csw_CutCheckDominance( pCut, pTemp ) )
-            {
-                // remove contained cut
-                pTemp->nFanins = 0;
-            }
-         }
-        else
-        {
-            // skip the non-contained cuts
-            if ( (pTemp->uSign & pCut->uSign) != pTemp->uSign )
-                continue;
-            // check containment seriously
-            if ( Csw_CutCheckDominance( pTemp, pCut ) )
-            {
-                // remove the given
-                pCut->nFanins = 0;
-                return 1;
-            }
-        }
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Merges two cuts.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Csw_CutMergeOrdered( Csw_Man_t * p, Csw_Cut_t * pC0, Csw_Cut_t * pC1, Csw_Cut_t * pC )
-{ 
-    int i, k, c;
-    assert( pC0->nFanins >= pC1->nFanins );
-    // the case of the largest cut sizes
-    if ( pC0->nFanins == p->nLeafMax && pC1->nFanins == p->nLeafMax )
-    {
-        for ( i = 0; i < pC0->nFanins; i++ )
-            if ( pC0->pFanins[i] != pC1->pFanins[i] )
-                return 0;
-        for ( i = 0; i < pC0->nFanins; i++ )
-            pC->pFanins[i] = pC0->pFanins[i];
-        pC->nFanins = pC0->nFanins;
-        return 1;
-    }
-    // the case when one of the cuts is the largest
-    if ( pC0->nFanins == p->nLeafMax )
-    {
-        for ( i = 0; i < pC1->nFanins; i++ )
-        {
-            for ( k = pC0->nFanins - 1; k >= 0; k-- )
-                if ( pC0->pFanins[k] == pC1->pFanins[i] )
-                    break;
-            if ( k == -1 ) // did not find
-                return 0;
-        }
-        for ( i = 0; i < pC0->nFanins; i++ )
-            pC->pFanins[i] = pC0->pFanins[i];
-        pC->nFanins = pC0->nFanins;
-        return 1;
-    }
-
-    // compare two cuts with different numbers
-    i = k = 0;
-    for ( c = 0; c < p->nLeafMax; c++ )
-    {
-        if ( k == pC1->nFanins )
-        {
-            if ( i == pC0->nFanins )
-            {
-                pC->nFanins = c;
-                return 1;
-            }
-            pC->pFanins[c] = pC0->pFanins[i++];
-            continue;
-        }
-        if ( i == pC0->nFanins )
-        {
-            if ( k == pC1->nFanins )
-            {
-                pC->nFanins = c;
-                return 1;
-            }
-            pC->pFanins[c] = pC1->pFanins[k++];
-            continue;
-        }
-        if ( pC0->pFanins[i] < pC1->pFanins[k] )
-        {
-            pC->pFanins[c] = pC0->pFanins[i++];
-            continue;
-        }
-        if ( pC0->pFanins[i] > pC1->pFanins[k] )
-        {
-            pC->pFanins[c] = pC1->pFanins[k++];
-            continue;
-        }
-        pC->pFanins[c] = pC0->pFanins[i++]; 
-        k++;
-    }
-    if ( i < pC0->nFanins || k < pC1->nFanins )
-        return 0;
-    pC->nFanins = c;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prepares the object for FPGA mapping.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Csw_CutMerge( Csw_Man_t * p, Csw_Cut_t * pCut0, Csw_Cut_t * pCut1, Csw_Cut_t * pCut )
-{ 
-    assert( p->nLeafMax > 0 );
-    // merge the nodes
-    if ( pCut0->nFanins < pCut1->nFanins )
-    {
-        if ( !Csw_CutMergeOrdered( p, pCut1, pCut0, pCut ) )
-            return 0;
-    }
-    else
-    {
-        if ( !Csw_CutMergeOrdered( p, pCut0, pCut1, pCut ) )
-            return 0;
-    }
-    pCut->uSign = pCut0->uSign | pCut1->uSign;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Consider cut with more than 2 fanins having 2 true variables.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Csw_ObjTwoVarCut( Csw_Man_t * p, Csw_Cut_t * pCut )
-{
-    Aig_Obj_t * pRes, * pIn0, * pIn1;
-    int nVars, uTruth, fCompl = 0;
-    assert( pCut->nFanins > 2 );
-    // minimize support of this cut
-    nVars = Csw_CutSupportMinimize( p, pCut );
-    assert( nVars == 2 );
-    // get the fanins
-    pIn0 = Aig_ManObj( p->pManRes, pCut->pFanins[0] );
-    pIn1 = Aig_ManObj( p->pManRes, pCut->pFanins[1] );
-    // derive the truth table
-    uTruth = 0xF & *Csw_CutTruth(pCut);
-    if ( uTruth == 14 || uTruth == 13 || uTruth == 11 || uTruth == 7 )
-    {
-        uTruth = 0xF & ~uTruth;
-        fCompl = 1;
-    }
-    // compute the result
-    pRes = NULL;
-    if ( uTruth == 1  )  // 0001  // 1110  14
-        pRes = Aig_And( p->pManRes, Aig_Not(pIn0), Aig_Not(pIn1) );
-    if ( uTruth == 2  )  // 0010  // 1101  13 
-        pRes = Aig_And( p->pManRes,         pIn0 , Aig_Not(pIn1) );
-    if ( uTruth == 4  )  // 0100  // 1011  11
-        pRes = Aig_And( p->pManRes, Aig_Not(pIn0),         pIn1  );
-    if ( uTruth == 8  )  // 1000  // 0111   7
-        pRes = Aig_And( p->pManRes,         pIn0 ,         pIn1  );
-    if ( pRes )
-        pRes = Aig_NotCond( pRes, fCompl );
-    return pRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Csw_Cut_t * Csw_ObjPrepareCuts( Csw_Man_t * p, Aig_Obj_t * pObj, int fTriv )
-{
-    Csw_Cut_t * pCutSet, * pCut;
-    int i;
-    // create the cutset of the node
-    pCutSet = (Csw_Cut_t *)Aig_MmFixedEntryFetch( p->pMemCuts );
-    Csw_ObjSetCuts( p, pObj, pCutSet );
-    Csw_ObjForEachCut( p, pObj, pCut, i )
-    {
-        pCut->nFanins = 0;
-        pCut->iNode = pObj->Id;
-        pCut->nCutSize = p->nCutSize;
-        pCut->nLeafMax = p->nLeafMax;
-    }
-    // add unit cut if needed
-    if ( fTriv )
-    {
-        pCut = pCutSet;
-        pCut->Cost = 0;
-        pCut->iNode = pObj->Id;
-        pCut->nFanins = 1;
-        pCut->pFanins[0] = pObj->Id;
-        pCut->uSign = Aig_ObjCutSign( pObj->Id );
-        memset( Csw_CutTruth(pCut), 0xAA, sizeof(unsigned) * p->nTruthWords );
-    }
-    return pCutSet;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives cuts for one node and sweeps this node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Csw_ObjSweep( Csw_Man_t * p, Aig_Obj_t * pObj, int fTriv )
-{
-    int fUseResub = 1;
-    Csw_Cut_t * pCut0, * pCut1, * pCut, * pCutSet;
-    Aig_Obj_t * pFanin0 = Aig_ObjFanin0(pObj);
-    Aig_Obj_t * pFanin1 = Aig_ObjFanin1(pObj);
-    Aig_Obj_t * pObjNew;
-    unsigned * pTruth;
-    int i, k, nVars, nFanins, iVar, clk;
-
-    assert( !Aig_IsComplement(pObj) );
-    if ( !Aig_ObjIsNode(pObj) )
-        return pObj;
-    if ( Csw_ObjCuts(p, pObj) )
-        return pObj;
-    // the node is not processed yet
-    assert( Csw_ObjCuts(p, pObj) == NULL );
-    assert( Aig_ObjIsNode(pObj) );
-
-    // set up the first cut
-    pCutSet = Csw_ObjPrepareCuts( p, pObj, fTriv );
-
-    // compute pair-wise cut combinations while checking table
-    Csw_ObjForEachCut( p, pFanin0, pCut0, i )
-    if ( pCut0->nFanins > 0 )
-    Csw_ObjForEachCut( p, pFanin1, pCut1, k )
-    if ( pCut1->nFanins > 0 )
-    {
-        // make sure K-feasible cut exists
-        if ( Kit_WordCountOnes(pCut0->uSign | pCut1->uSign) > p->nLeafMax )
-            continue;
-        // get the next cut of this node
-        pCut = Csw_CutFindFree( p, pObj );
-clk = clock();
-        // assemble the new cut
-        if ( !Csw_CutMerge( p, pCut0, pCut1, pCut ) )
-        {
-            assert( pCut->nFanins == 0 );
-            continue;
-        }
-        // check containment
-        if ( Csw_CutFilter( p, pObj, pCut ) )
-        {
-            assert( pCut->nFanins == 0 );
-            continue;
-        }
-        // create its truth table
-        pTruth = Csw_CutComputeTruth( p, pCut, pCut0, pCut1, Aig_ObjFaninC0(pObj), Aig_ObjFaninC1(pObj) );
-        // support minimize the truth table
-        nFanins = pCut->nFanins;
-//        nVars = Csw_CutSupportMinimize( p, pCut ); // leads to quality degradation
-        nVars = Kit_TruthSupportSize( pTruth, p->nLeafMax );
-p->timeCuts += clock() - clk;
-
-        // check for trivial truth tables
-        if ( nVars == 0 )
-        {
-            p->nNodesTriv0++;
-            return Aig_NotCond( Aig_ManConst1(p->pManRes), !(pTruth[0] & 1) );
-        }
-        if ( nVars == 1 )
-        {
-            p->nNodesTriv1++;
-            iVar = Kit_WordFindFirstBit( Kit_TruthSupport(pTruth, p->nLeafMax) );
-            assert( iVar < pCut->nFanins );
-            return Aig_NotCond( Aig_ManObj(p->pManRes, pCut->pFanins[iVar]), (pTruth[0] & 1) );
-        }
-        if ( nVars == 2 && nFanins > 2 && fUseResub )
-        {
-            if ( pObjNew = Csw_ObjTwoVarCut( p, pCut ) )
-            {
-                p->nNodesTriv2++;
-                return pObjNew;
-            }
-        }
-
-        // check if an equivalent node with the same cut exists
-clk = clock();
-        pObjNew = pCut->nFanins > 2 ? Csw_TableCutLookup( p, pCut ) : NULL;
-p->timeHash += clock() - clk;
-        if ( pObjNew )
-        {
-            p->nNodesCuts++;
-            return pObjNew;
-        }
-
-        // assign the cost
-        pCut->Cost = Csw_CutFindCost( p, pCut );
-        assert( pCut->nFanins > 0 );
-        assert( pCut->Cost > 0 );
-    }
-    p->nNodesTried++;
-
-    // load the resulting cuts into the table
-clk = clock();
-    Csw_ObjForEachCut( p, pObj, pCut, i )
-    {
-        if ( pCut->nFanins > 2 )
-        {
-            assert( pCut->Cost > 0 );
-            Csw_TableCutInsert( p, pCut );
-        }
-    }
-p->timeHash += clock() - clk;
-
-    // return the node if could not replace it
-    return pObj;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/csw/cswInt.h b/src/aig/csw/cswInt.h
deleted file mode 100644
index 37efe9b4..00000000
--- a/src/aig/csw/cswInt.h
+++ /dev/null
@@ -1,157 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cswInt.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Cut sweeping.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - July 11, 2007.]
-
-  Revision    [$Id: cswInt.h,v 1.00 2007/07/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
- 
-#ifndef __CSW_INT_H__
-#define __CSW_INT_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-
-#include "aig.h"
-#include "dar.h"
-#include "kit.h"
-#include "csw.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Csw_Man_t_            Csw_Man_t;
-typedef struct Csw_Cut_t_            Csw_Cut_t;
-
-// the cut used to represent node in the AIG
-struct Csw_Cut_t_
-{
-    Csw_Cut_t *     pNext;           // the next cut in the table 
-    int             Cost;            // the cost of the cut
-//    float           Cost;            // the cost of the cut
-    unsigned        uSign;           // cut signature
-    int             iNode;           // the node, for which it is the cut
-    short           nCutSize;        // the number of bytes in the cut
-    char            nLeafMax;        // the maximum number of fanins
-    char            nFanins;         // the current number of fanins
-    int             pFanins[0];      // the fanins (followed by the truth table)
-};
-
-// the CNF computation manager
-struct Csw_Man_t_
-{
-    // AIG manager
-    Aig_Man_t *     pManAig;         // the input AIG manager
-    Aig_Man_t *     pManRes;         // the output AIG manager
-    Aig_Obj_t **    pEquiv;          // the equivalent nodes in the resulting manager
-    Csw_Cut_t **    pCuts;           // the cuts for each node in the output manager
-    int *           pnRefs;          // the number of references of each new node
-    // hash table for cuts
-    Csw_Cut_t **    pTable;          // the table composed of cuts 
-    int             nTableSize;      // the size of hash table
-    // parameters
-    int             nCutsMax;        // the max number of cuts at the node
-    int             nLeafMax;        // the max number of leaves of a cut
-    int             fVerbose;        // enables verbose output
-    // internal variables
-    int             nCutSize;        // the number of bytes needed to store one cut
-    int             nTruthWords;     // the number of truth table words
-    Aig_MmFixed_t * pMemCuts;        // memory manager for cuts
-    unsigned *      puTemp[4];       // used for the truth table computation
-    // statistics
-    int             nNodesTriv0;     // the number of trivial nodes
-    int             nNodesTriv1;     // the number of trivial nodes
-    int             nNodesTriv2;     // the number of trivial nodes
-    int             nNodesCuts;      // the number of rewritten nodes
-    int             nNodesTried;     // the number of nodes tried
-    int             timeCuts;        // time to compute the cut and its truth table
-    int             timeHash;        // time for hashing cuts
-    int             timeOther;       // other time
-    int             timeTotal;       // total time
-};
-
-static inline int          Csw_CutLeaveNum( Csw_Cut_t * pCut )          { return pCut->nFanins;                                   }
-static inline int *        Csw_CutLeaves( Csw_Cut_t * pCut )            { return pCut->pFanins;                                   }
-static inline unsigned *   Csw_CutTruth( Csw_Cut_t * pCut )             { return (unsigned *)(pCut->pFanins + pCut->nLeafMax);    }
-static inline Csw_Cut_t *  Csw_CutNext( Csw_Cut_t * pCut )              { return (Csw_Cut_t *)(((char *)pCut) + pCut->nCutSize);  }
-
-static inline int          Csw_ObjRefs( Csw_Man_t * p, Aig_Obj_t * pObj )                         { return p->pnRefs[pObj->Id];   }
-static inline void         Csw_ObjAddRefs( Csw_Man_t * p, Aig_Obj_t * pObj, int nRefs )           { p->pnRefs[pObj->Id] += nRefs; }
-
-static inline Csw_Cut_t *  Csw_ObjCuts( Csw_Man_t * p, Aig_Obj_t * pObj )                         { return p->pCuts[pObj->Id];    }
-static inline void         Csw_ObjSetCuts( Csw_Man_t * p, Aig_Obj_t * pObj, Csw_Cut_t * pCuts )   { p->pCuts[pObj->Id] = pCuts;   }
-
-static inline Aig_Obj_t *  Csw_ObjEquiv( Csw_Man_t * p, Aig_Obj_t * pObj )                        { return p->pEquiv[pObj->Id];   }
-static inline void         Csw_ObjSetEquiv( Csw_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pEquiv ) { p->pEquiv[pObj->Id] = pEquiv; }
-
-static inline Aig_Obj_t *  Csw_ObjChild0Equiv( Csw_Man_t * p, Aig_Obj_t * pObj ) { assert( !Aig_IsComplement(pObj) ); return Aig_ObjFanin0(pObj)? Aig_NotCond(Csw_ObjEquiv(p, Aig_ObjFanin0(pObj)), Aig_ObjFaninC0(pObj)) : NULL;  }
-static inline Aig_Obj_t *  Csw_ObjChild1Equiv( Csw_Man_t * p, Aig_Obj_t * pObj ) { assert( !Aig_IsComplement(pObj) ); return Aig_ObjFanin1(pObj)? Aig_NotCond(Csw_ObjEquiv(p, Aig_ObjFanin1(pObj)), Aig_ObjFaninC1(pObj)) : NULL;  }
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                           ITERATORS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// iterator over cuts of the node
-#define Csw_ObjForEachCut( p, pObj, pCut, i )                           \
-    for ( i = 0, pCut = Csw_ObjCuts(p, pObj); i < p->nCutsMax; i++, pCut = Csw_CutNext(pCut) ) 
-// iterator over leaves of the cut
-#define Csw_CutForEachLeaf( p, pCut, pLeaf, i )                         \
-    for ( i = 0; (i < (int)(pCut)->nFanins) && ((pLeaf) = Aig_ManObj(p, (pCut)->pFanins[i])); i++ )
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== cnfCut.c ========================================================*/
-extern Csw_Cut_t *    Csw_ObjPrepareCuts( Csw_Man_t * p, Aig_Obj_t * pObj, int fTriv );
-extern Aig_Obj_t *    Csw_ObjSweep( Csw_Man_t * p, Aig_Obj_t * pObj, int fTriv );
-/*=== cnfMan.c ========================================================*/
-extern Csw_Man_t *    Csw_ManStart( Aig_Man_t * pMan, int nCutsMax, int nLeafMax, int fVerbose );
-extern void           Csw_ManStop( Csw_Man_t * p );
-/*=== cnfTable.c ========================================================*/
-extern int            Csw_TableCountCuts( Csw_Man_t * p );
-extern void           Csw_TableCutInsert( Csw_Man_t * p, Csw_Cut_t * pCut );
-extern Aig_Obj_t *    Csw_TableCutLookup( Csw_Man_t * p, Csw_Cut_t * pCut );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/csw/cswMan.c b/src/aig/csw/cswMan.c
deleted file mode 100644
index c3061dee..00000000
--- a/src/aig/csw/cswMan.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cswMan.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Cut sweeping.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - July 11, 2007.]
-
-  Revision    [$Id: cswMan.c,v 1.00 2007/07/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cswInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the cut sweeping manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Csw_Man_t * Csw_ManStart( Aig_Man_t * pMan, int nCutsMax, int nLeafMax, int fVerbose )
-{
-    Csw_Man_t * p;
-    Aig_Obj_t * pObj;
-    int i;
-    assert( nCutsMax >= 2  );
-    assert( nLeafMax <= 16 );
-    // allocate the fraiging manager
-    p = ALLOC( Csw_Man_t, 1 );
-    memset( p, 0, sizeof(Csw_Man_t) );
-    p->nCutsMax = nCutsMax;
-    p->nLeafMax = nLeafMax;
-    p->fVerbose = fVerbose;
-    p->pManAig  = pMan;
-    // create the new manager
-    p->pManRes  = Aig_ManStartFrom( pMan );
-    assert( Aig_ManPiNum(p->pManAig) == Aig_ManPiNum(p->pManRes) );
-    // allocate room for cuts and equivalent nodes
-    p->pnRefs   = ALLOC( int, Aig_ManObjNumMax(pMan) );
-    p->pEquiv   = ALLOC( Aig_Obj_t *, Aig_ManObjNumMax(pMan) );
-    p->pCuts    = ALLOC( Csw_Cut_t *, Aig_ManObjNumMax(pMan) );
-    memset( p->pCuts, 0, sizeof(Aig_Obj_t *) * Aig_ManObjNumMax(pMan) );
-    memset( p->pnRefs, 0, sizeof(int) * Aig_ManObjNumMax(pMan) );
-    // allocate memory manager
-    p->nTruthWords = Aig_TruthWordNum(nLeafMax);
-    p->nCutSize = sizeof(Csw_Cut_t) + sizeof(int) * nLeafMax + sizeof(unsigned) * p->nTruthWords;
-    p->pMemCuts = Aig_MmFixedStart( p->nCutSize * p->nCutsMax, 512 );
-    // allocate hash table for cuts
-    p->nTableSize = Aig_PrimeCudd( Aig_ManNodeNum(pMan) * p->nCutsMax / 2 );
-    p->pTable = ALLOC( Csw_Cut_t *, p->nTableSize );
-    memset( p->pTable, 0, sizeof(Aig_Obj_t *) * p->nTableSize );
-    // set the pointers to the available fraig nodes
-    Csw_ObjSetEquiv( p, Aig_ManConst1(p->pManAig), Aig_ManConst1(p->pManRes) );
-    Aig_ManForEachPi( p->pManAig, pObj, i )
-        Csw_ObjSetEquiv( p, pObj, Aig_ManPi(p->pManRes, i) );
-    // room for temporary truth tables
-    p->puTemp[0] = ALLOC( unsigned, 4 * p->nTruthWords );
-    p->puTemp[1] = p->puTemp[0] + p->nTruthWords;
-    p->puTemp[2] = p->puTemp[1] + p->nTruthWords;
-    p->puTemp[3] = p->puTemp[2] + p->nTruthWords;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Csw_ManStop( Csw_Man_t * p )
-{
-    if ( p->fVerbose )
-    {
-        int nNodesBeg = Aig_ManNodeNum(p->pManAig);
-        int nNodesEnd = Aig_ManNodeNum(p->pManRes);
-        printf( "Beg = %7d.  End = %7d.  (%6.2f %%)  Try = %7d.  Cuts = %8d.\n", 
-            nNodesBeg, nNodesEnd, 100.0*(nNodesBeg-nNodesEnd)/nNodesBeg,
-            p->nNodesTried, Csw_TableCountCuts( p ) );
-        printf( "Triv0 = %6d.  Triv1 = %6d.  Triv2 = %6d.  Cut-replace = %6d.\n", 
-            p->nNodesTriv0, p->nNodesTriv1, p->nNodesTriv2, p->nNodesCuts );
-        PRTP( "Cuts    ", p->timeCuts,     p->timeTotal );
-        PRTP( "Hashing ", p->timeHash,     p->timeTotal );
-        PRTP( "Other   ", p->timeOther,    p->timeTotal );
-        PRTP( "TOTAL   ", p->timeTotal,    p->timeTotal );
-    }
-    free( p->puTemp[0] );
-    Aig_MmFixedStop( p->pMemCuts, 0 );
-    free( p->pnRefs );
-    free( p->pEquiv );
-    free( p->pCuts );
-    free( p->pTable );
-    free( p );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/csw/cswTable.c b/src/aig/csw/cswTable.c
deleted file mode 100644
index 87e36ae1..00000000
--- a/src/aig/csw/cswTable.c
+++ /dev/null
@@ -1,161 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cswTable.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Cut sweeping.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - July 11, 2007.]
-
-  Revision    [$Id: cswTable.c,v 1.00 2007/07/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cswInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Computes hash value of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Csw_CutHash( Csw_Cut_t * pCut )
-{
-    static int s_FPrimes[128] = { 
-        1009, 1049, 1093, 1151, 1201, 1249, 1297, 1361, 1427, 1459, 
-        1499, 1559, 1607, 1657, 1709, 1759, 1823, 1877, 1933, 1997, 
-        2039, 2089, 2141, 2213, 2269, 2311, 2371, 2411, 2467, 2543, 
-        2609, 2663, 2699, 2741, 2797, 2851, 2909, 2969, 3037, 3089, 
-        3169, 3221, 3299, 3331, 3389, 3461, 3517, 3557, 3613, 3671, 
-        3719, 3779, 3847, 3907, 3943, 4013, 4073, 4129, 4201, 4243, 
-        4289, 4363, 4441, 4493, 4549, 4621, 4663, 4729, 4793, 4871, 
-        4933, 4973, 5021, 5087, 5153, 5227, 5281, 5351, 5417, 5471, 
-        5519, 5573, 5651, 5693, 5749, 5821, 5861, 5923, 6011, 6073, 
-        6131, 6199, 6257, 6301, 6353, 6397, 6481, 6563, 6619, 6689, 
-        6737, 6803, 6863, 6917, 6977, 7027, 7109, 7187, 7237, 7309, 
-        7393, 7477, 7523, 7561, 7607, 7681, 7727, 7817, 7877, 7933, 
-        8011, 8039, 8059, 8081, 8093, 8111, 8123, 8147
-    };
-    unsigned uHash;
-    int i;
-    assert( pCut->nFanins <= 16 );
-    uHash = 0;
-    for ( i = 0; i < pCut->nFanins; i++ )
-        uHash ^= pCut->pFanins[i] * s_FPrimes[i];
-    return uHash;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the total number of cuts in the table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Csw_TableCountCuts( Csw_Man_t * p )
-{
-    Csw_Cut_t * pEnt;
-    int i, Counter = 0;
-    for ( i = 0; i < p->nTableSize; i++ )
-        for ( pEnt = p->pTable[i]; pEnt; pEnt = pEnt->pNext )
-            Counter++;
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds the cut to the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Csw_TableCutInsert( Csw_Man_t * p, Csw_Cut_t * pCut )
-{
-    int iEntry = Csw_CutHash(pCut) % p->nTableSize;
-    pCut->pNext = p->pTable[iEntry];
-    p->pTable[iEntry] = pCut;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns an equivalent node if it exists.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Csw_TableCutLookup( Csw_Man_t * p, Csw_Cut_t * pCut )
-{
-    Aig_Obj_t * pRes = NULL;
-    Csw_Cut_t * pEnt;
-    unsigned * pTruthNew, * pTruthOld;
-    int iEntry = Csw_CutHash(pCut) % p->nTableSize;
-    for ( pEnt = p->pTable[iEntry]; pEnt; pEnt = pEnt->pNext )
-    {
-        if ( pEnt->nFanins != pCut->nFanins )
-            continue;
-        if ( pEnt->uSign != pCut->uSign )
-            continue;
-        if ( memcmp( pEnt->pFanins, pCut->pFanins, sizeof(int) * pCut->nFanins ) )
-            continue;
-        pTruthOld = Csw_CutTruth(pEnt);
-        pTruthNew = Csw_CutTruth(pCut);
-        if ( (pTruthOld[0] & 1) == (pTruthNew[0] & 1) )
-        {
-            if ( Kit_TruthIsEqual( pTruthOld, pTruthNew, pCut->nFanins ) )
-            {
-                pRes = Aig_ManObj( p->pManRes, pEnt->iNode );
-                assert( pRes->fPhase == Aig_ManObj( p->pManRes, pCut->iNode )->fPhase );
-                break;
-            }
-        }
-        else
-        {
-            if ( Kit_TruthIsOpposite( pTruthOld, pTruthNew, pCut->nFanins ) )
-            {
-                pRes = Aig_Not( Aig_ManObj( p->pManRes, pEnt->iNode ) );
-                assert( Aig_Regular(pRes)->fPhase != Aig_ManObj( p->pManRes, pCut->iNode )->fPhase );
-                break;
-            }
-        }
-    }
-    return pRes;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/csw/csw_.c b/src/aig/csw/csw_.c
deleted file mode 100644
index 1c59f152..00000000
--- a/src/aig/csw/csw_.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [csw_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Cut sweeping.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - July 11, 2007.]
-
-  Revision    [$Id: csw_.c,v 1.00 2007/07/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cswInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/csw/module.make b/src/aig/csw/module.make
deleted file mode 100644
index 8fdb7bef..00000000
--- a/src/aig/csw/module.make
+++ /dev/null
@@ -1,4 +0,0 @@
-SRC +=    src/aig/csw/cswCore.c \
-    src/aig/csw/cswCut.c \
-    src/aig/csw/cswMan.c \
-    src/aig/csw/cswTable.c 
diff --git a/src/aig/dar/dar.h b/src/aig/dar/dar.h
deleted file mode 100644
index 1f25e767..00000000
--- a/src/aig/dar/dar.h
+++ /dev/null
@@ -1,103 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [dar.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: dar.h,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __DAR_H__
-#define __DAR_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Dar_RwrPar_t_            Dar_RwrPar_t;
-typedef struct Dar_RefPar_t_            Dar_RefPar_t;
-
-struct Dar_RwrPar_t_  
-{
-    int              nCutsMax;       // the maximum number of cuts to try
-    int              nSubgMax;       // the maximum number of subgraphs to try
-    int              fFanout;        // support fanout representation
-    int              fUpdateLevel;   // update level 
-    int              fUseZeros;      // performs zero-cost replacement
-    int              fVerbose;       // enables verbose output
-    int              fVeryVerbose;   // enables very verbose output
-};
-
-struct Dar_RefPar_t_  
-{
-    int              nMffcMin;       // the min MFFC size for which refactoring is used
-    int              nLeafMax;       // the max number of leaves of a cut
-    int              nCutsMax;       // the max number of cuts to consider  
-    int              fExtend;        // extends the cut below MFFC
-    int              fUpdateLevel;   // updates the level after each move
-    int              fUseZeros;      // perform zero-cost replacements
-    int              fVerbose;       // verbosity level
-    int              fVeryVerbose;   // enables very verbose output
-};
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                             ITERATORS                            ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== darBalance.c ========================================================*/
-extern Aig_Man_t *     Dar_ManBalance( Aig_Man_t * p, int fUpdateLevel );
-/*=== darCore.c ========================================================*/
-extern void            Dar_ManDefaultRwrParams( Dar_RwrPar_t * pPars );
-extern int             Dar_ManRewrite( Aig_Man_t * pAig, Dar_RwrPar_t * pPars );
-extern Aig_MmFixed_t * Dar_ManComputeCuts( Aig_Man_t * pAig, int nCutsMax );
-/*=== darRefact.c ========================================================*/
-extern void            Dar_ManDefaultRefParams( Dar_RefPar_t * pPars );
-extern int             Dar_ManRefactor( Aig_Man_t * pAig, Dar_RefPar_t * pPars );
-/*=== darScript.c ========================================================*/
-extern Aig_Man_t *     Dar_ManRewriteDefault( Aig_Man_t * pAig );
-extern Aig_Man_t *     Dar_ManRwsat( Aig_Man_t * pAig, int fBalance, int fVerbose );
-extern Aig_Man_t *     Dar_ManCompress( Aig_Man_t * pAig, int fBalance, int fUpdateLevel, int fVerbose );
-extern Aig_Man_t *     Dar_ManCompress2( Aig_Man_t * pAig, int fBalance, int fUpdateLevel, int fVerbose );
-extern Aig_Man_t *     Dar_ManChoice( Aig_Man_t * pAig, int fBalance, int fUpdateLevel, int fVerbose );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/dar/darBalance.c b/src/aig/dar/darBalance.c
deleted file mode 100644
index 989535f2..00000000
--- a/src/aig/dar/darBalance.c
+++ /dev/null
@@ -1,398 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darBalance.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Algebraic AIG balancing.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darBalance.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static Aig_Obj_t * Dar_Balance_rec( Aig_Man_t * pNew, Aig_Obj_t * pObj, Vec_Vec_t * vStore, int Level, int fUpdateLevel );
-static Vec_Ptr_t * Dar_BalanceCone( Aig_Obj_t * pObj, Vec_Vec_t * vStore, int Level );
-static int         Dar_BalanceFindLeft( Vec_Ptr_t * vSuper );
-static void        Dar_BalancePermute( Aig_Man_t * p, Vec_Ptr_t * vSuper, int LeftBound, int fExor );
-static void        Dar_BalancePushUniqueOrderByLevel( Vec_Ptr_t * vStore, Aig_Obj_t * pObj );
-static Aig_Obj_t * Dar_BalanceBuildSuper( Aig_Man_t * p, Vec_Ptr_t * vSuper, Aig_Type_t Type, int fUpdateLevel );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Performs algebraic balancing of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Dar_ManBalance( Aig_Man_t * p, int fUpdateLevel )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pObj, * pDriver, * pObjNew;
-    Vec_Vec_t * vStore;
-    int i;
-    // create the new manager 
-    pNew = Aig_ManStart( Aig_ManObjNumMax(p) );
-    pNew->pName = Aig_UtilStrsav( p->pName );
-    pNew->nRegs = p->nRegs;
-    pNew->nAsserts = p->nAsserts;
-    if ( p->vFlopNums )
-        pNew->vFlopNums = Vec_IntDup( p->vFlopNums );
-    // map the PI nodes
-    Aig_ManCleanData( p );
-    Aig_ManConst1(p)->pData = Aig_ManConst1(pNew);
-    Aig_ManForEachPi( p, pObj, i )
-        pObj->pData = Aig_ObjCreatePi(pNew);
-    // balance the AIG
-    vStore = Vec_VecAlloc( 50 );
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        pDriver = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-        pObjNew = Dar_Balance_rec( pNew, Aig_Regular(pDriver), vStore, 0, fUpdateLevel );
-        pObjNew = Aig_NotCond( pObjNew, Aig_IsComplement(pDriver) );
-        Aig_ObjCreatePo( pNew, pObjNew );
-    }
-    Vec_VecFree( vStore );
-    // remove dangling nodes
-    if ( i = Aig_ManCleanup( pNew ) )
-        printf( "Cleanup after balancing removed %d dangling nodes.\n", i );
-    // check the resulting AIG
-    if ( !Aig_ManCheck(pNew) )
-        printf( "Dar_ManBalance(): The check has failed.\n" );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the new node constructed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Dar_Balance_rec( Aig_Man_t * pNew, Aig_Obj_t * pObjOld, Vec_Vec_t * vStore, int Level, int fUpdateLevel )
-{
-    Aig_Obj_t * pObjNew;
-    Vec_Ptr_t * vSuper;
-    int i;
-    assert( !Aig_IsComplement(pObjOld) );
-    assert( !Aig_ObjIsBuf(pObjOld) );
-    // return if the result is known
-    if ( pObjOld->pData )
-        return pObjOld->pData;
-    assert( Aig_ObjIsNode(pObjOld) );
-    // get the implication supergate
-    vSuper = Dar_BalanceCone( pObjOld, vStore, Level );
-    // check if supergate contains two nodes in the opposite polarity
-    if ( vSuper->nSize == 0 )
-        return pObjOld->pData = Aig_ManConst0(pNew);
-    if ( Vec_PtrSize(vSuper) < 2 )
-        printf( "BUG!\n" );
-    // for each old node, derive the new well-balanced node
-    for ( i = 0; i < Vec_PtrSize(vSuper); i++ )
-    {
-        pObjNew = Dar_Balance_rec( pNew, Aig_Regular(vSuper->pArray[i]), vStore, Level + 1, fUpdateLevel );
-        vSuper->pArray[i] = Aig_NotCond( pObjNew, Aig_IsComplement(vSuper->pArray[i]) );
-    }
-    // build the supergate
-    pObjNew = Dar_BalanceBuildSuper( pNew, vSuper, Aig_ObjType(pObjOld), fUpdateLevel );
-    // make sure the balanced node is not assigned
-//    assert( pObjOld->Level >= Aig_Regular(pObjNew)->Level );
-    assert( pObjOld->pData == NULL );
-    return pObjOld->pData = pObjNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the nodes of the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_BalanceCone_rec( Aig_Obj_t * pRoot, Aig_Obj_t * pObj, Vec_Ptr_t * vSuper )
-{
-    int RetValue1, RetValue2, i;
-    // check if the node is visited
-    if ( Aig_Regular(pObj)->fMarkB )
-    {
-        // check if the node occurs in the same polarity
-        for ( i = 0; i < vSuper->nSize; i++ )
-            if ( vSuper->pArray[i] == pObj )
-                return 1;
-        // check if the node is present in the opposite polarity
-        for ( i = 0; i < vSuper->nSize; i++ )
-            if ( vSuper->pArray[i] == Aig_Not(pObj) )
-                return -1;
-        assert( 0 );
-        return 0;
-    }
-    // if the new node is complemented or a PI, another gate begins
-    if ( pObj != pRoot && (Aig_IsComplement(pObj) || Aig_ObjType(pObj) != Aig_ObjType(pRoot) || Aig_ObjRefs(pObj) > 1) )
-    {
-        Vec_PtrPush( vSuper, pObj );
-        Aig_Regular(pObj)->fMarkB = 1;
-        return 0;
-    }
-    assert( !Aig_IsComplement(pObj) );
-    assert( Aig_ObjIsNode(pObj) );
-    // go through the branches
-    RetValue1 = Dar_BalanceCone_rec( pRoot, Aig_ObjReal_rec( Aig_ObjChild0(pObj) ), vSuper );
-    RetValue2 = Dar_BalanceCone_rec( pRoot, Aig_ObjReal_rec( Aig_ObjChild1(pObj) ), vSuper );
-    if ( RetValue1 == -1 || RetValue2 == -1 )
-        return -1;
-    // return 1 if at least one branch has a duplicate
-    return RetValue1 || RetValue2;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the nodes of the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Dar_BalanceCone( Aig_Obj_t * pObj, Vec_Vec_t * vStore, int Level )
-{
-    Vec_Ptr_t * vNodes;
-    int RetValue, i;
-    assert( !Aig_IsComplement(pObj) );
-    // extend the storage
-    if ( Vec_VecSize( vStore ) <= Level )
-        Vec_VecPush( vStore, Level, 0 );
-    // get the temporary array of nodes
-    vNodes = Vec_VecEntry( vStore, Level );
-    Vec_PtrClear( vNodes );
-    // collect the nodes in the implication supergate
-    RetValue = Dar_BalanceCone_rec( pObj, pObj, vNodes );
-    assert( vNodes->nSize > 1 );
-    // unmark the visited nodes
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Aig_Regular(pObj)->fMarkB = 0;
-    // if we found the node and its complement in the same implication supergate, 
-    // return empty set of nodes (meaning that we should use constant-0 node)
-    if ( RetValue == -1 )
-        vNodes->nSize = 0;
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Procedure used for sorting the nodes in decreasing order of levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_NodeCompareLevelsDecrease( Aig_Obj_t ** pp1, Aig_Obj_t ** pp2 )
-{
-    int Diff = Aig_ObjLevel(Aig_Regular(*pp1)) - Aig_ObjLevel(Aig_Regular(*pp2));
-    if ( Diff > 0 )
-        return -1;
-    if ( Diff < 0 ) 
-        return 1;
-    return 0; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Builds implication supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Dar_BalanceBuildSuper( Aig_Man_t * p, Vec_Ptr_t * vSuper, Aig_Type_t Type, int fUpdateLevel )
-{
-    Aig_Obj_t * pObj1, * pObj2;
-    int LeftBound;
-    assert( vSuper->nSize > 1 );
-    // sort the new nodes by level in the decreasing order
-    Vec_PtrSort( vSuper, Aig_NodeCompareLevelsDecrease );
-    // balance the nodes
-    while ( vSuper->nSize > 1 )
-    {
-        // find the left bound on the node to be paired
-        LeftBound = (!fUpdateLevel)? 0 : Dar_BalanceFindLeft( vSuper );
-        // find the node that can be shared (if no such node, randomize choice)
-        Dar_BalancePermute( p, vSuper, LeftBound, Type == AIG_OBJ_EXOR );
-        // pull out the last two nodes
-        pObj1 = Vec_PtrPop(vSuper);
-        pObj2 = Vec_PtrPop(vSuper);
-        Dar_BalancePushUniqueOrderByLevel( vSuper, Aig_Oper(p, pObj1, pObj2, Type) );
-    }
-    return Vec_PtrEntry(vSuper, 0);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Finds the left bound on the next candidate to be paired.]
-
-  Description [The nodes in the array are in the decreasing order of levels. 
-  The last node in the array has the smallest level. By default it would be paired 
-  with the next node on the left. However, it may be possible to pair it with some
-  other node on the left, in such a way that the new node is shared. This procedure
-  finds the index of the left-most node, which can be paired with the last node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_BalanceFindLeft( Vec_Ptr_t * vSuper )
-{
-    Aig_Obj_t * pObjRight, * pObjLeft;
-    int Current;
-    // if two or less nodes, pair with the first
-    if ( Vec_PtrSize(vSuper) < 3 )
-        return 0;
-    // set the pointer to the one before the last
-    Current = Vec_PtrSize(vSuper) - 2;
-    pObjRight = Vec_PtrEntry( vSuper, Current );
-    // go through the nodes to the left of this one
-    for ( Current--; Current >= 0; Current-- )
-    {
-        // get the next node on the left
-        pObjLeft = Vec_PtrEntry( vSuper, Current );
-        // if the level of this node is different, quit the loop
-        if ( Aig_ObjLevel(Aig_Regular(pObjLeft)) != Aig_ObjLevel(Aig_Regular(pObjRight)) )
-            break;
-    }
-    Current++;    
-    // get the node, for which the equality holds
-    pObjLeft = Vec_PtrEntry( vSuper, Current );
-    assert( Aig_ObjLevel(Aig_Regular(pObjLeft)) == Aig_ObjLevel(Aig_Regular(pObjRight)) );
-    return Current;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Moves closer to the end the node that is best for sharing.]
-
-  Description [If there is no node with sharing, randomly chooses one of 
-  the legal nodes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_BalancePermute( Aig_Man_t * p, Vec_Ptr_t * vSuper, int LeftBound, int fExor )
-{
-    Aig_Obj_t * pObj1, * pObj2, * pObj3, * pGhost;
-    int RightBound, i;
-    // get the right bound
-    RightBound = Vec_PtrSize(vSuper) - 2;
-    assert( LeftBound <= RightBound );
-    if ( LeftBound == RightBound )
-        return;
-    // get the two last nodes
-    pObj1 = Vec_PtrEntry( vSuper, RightBound + 1 );
-    pObj2 = Vec_PtrEntry( vSuper, RightBound     );
-    if ( Aig_Regular(pObj1) == p->pConst1 || Aig_Regular(pObj2) == p->pConst1 )
-        return;
-    // find the first node that can be shared
-    for ( i = RightBound; i >= LeftBound; i-- )
-    {
-        pObj3 = Vec_PtrEntry( vSuper, i );
-        if ( Aig_Regular(pObj3) == p->pConst1 )
-        {
-            Vec_PtrWriteEntry( vSuper, i,          pObj2 );
-            Vec_PtrWriteEntry( vSuper, RightBound, pObj3 );
-            return;
-        }
-        pGhost = Aig_ObjCreateGhost( p, pObj1, pObj3, fExor? AIG_OBJ_EXOR : AIG_OBJ_AND );
-        if ( Aig_TableLookup( p, pGhost ) )
-        {
-            if ( pObj3 == pObj2 )
-                return;
-            Vec_PtrWriteEntry( vSuper, i,          pObj2 );
-            Vec_PtrWriteEntry( vSuper, RightBound, pObj3 );
-            return;
-        }
-    }
-/*
-    // we did not find the node to share, randomize choice
-    {
-        int Choice = rand() % (RightBound - LeftBound + 1);
-        pObj3 = Vec_PtrEntry( vSuper, LeftBound + Choice );
-        if ( pObj3 == pObj2 )
-            return;
-        Vec_PtrWriteEntry( vSuper, LeftBound + Choice, pObj2 );
-        Vec_PtrWriteEntry( vSuper, RightBound,         pObj3 );
-    }
-*/
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts a new node in the order by levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_BalancePushUniqueOrderByLevel( Vec_Ptr_t * vStore, Aig_Obj_t * pObj )
-{
-    Aig_Obj_t * pObj1, * pObj2;
-    int i;
-    if ( Vec_PtrPushUnique(vStore, pObj) )
-        return;
-    // find the p of the node
-    for ( i = vStore->nSize-1; i > 0; i-- )
-    {
-        pObj1 = vStore->pArray[i  ];
-        pObj2 = vStore->pArray[i-1];
-        if ( Aig_ObjLevel(Aig_Regular(pObj1)) <= Aig_ObjLevel(Aig_Regular(pObj2)) )
-            break;
-        vStore->pArray[i  ] = pObj2;
-        vStore->pArray[i-1] = pObj1;
-    }
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darCore.c b/src/aig/dar/darCore.c
deleted file mode 100644
index 5e1c0fad..00000000
--- a/src/aig/dar/darCore.c
+++ /dev/null
@@ -1,244 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darCore.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Core of the rewriting package.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darCore.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the structure with default assignment of parameters.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_ManDefaultRwrParams( Dar_RwrPar_t * pPars )
-{
-    memset( pPars, 0, sizeof(Dar_RwrPar_t) );
-    pPars->nCutsMax     =  8; // 8
-    pPars->nSubgMax     =  5; // 5 is a "magic number"
-    pPars->fFanout      =  1;
-    pPars->fUpdateLevel =  0;
-    pPars->fUseZeros    =  0;
-    pPars->fVerbose     =  0;
-    pPars->fVeryVerbose =  0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_ManRewrite( Aig_Man_t * pAig, Dar_RwrPar_t * pPars )
-{
-    Dar_Man_t * p;
-    Bar_Progress_t * pProgress;
-    Dar_Cut_t * pCut;
-    Aig_Obj_t * pObj, * pObjNew;
-    int i, k, nNodesOld, nNodeBefore, nNodeAfter, Required;
-    int clk = 0, clkStart;
-    // prepare the library
-    Dar_LibPrepare( pPars->nSubgMax ); 
-    // create rewriting manager
-    p = Dar_ManStart( pAig, pPars );
-    // remove dangling nodes
-    Aig_ManCleanup( pAig );
-    // if updating levels is requested, start fanout and timing
-    if ( p->pPars->fFanout )
-        Aig_ManFanoutStart( pAig );
-    if ( p->pPars->fUpdateLevel )
-        Aig_ManStartReverseLevels( pAig, 0 );
-    // set elementary cuts for the PIs
-    Dar_ManCutsStart( p );
-    // resynthesize each node once
-    clkStart = clock();
-    p->nNodesInit = Aig_ManNodeNum(pAig);
-    nNodesOld = Vec_PtrSize( pAig->vObjs );
-
-    pProgress = Bar_ProgressStart( stdout, nNodesOld );
-    Aig_ManForEachObj( pAig, pObj, i )
-//    pProgress = Bar_ProgressStart( stdout, 100 );
-//    Aig_ManOrderStart( pAig );
-//    Aig_ManForEachNodeInOrder( pAig, pObj )
-    {
-//        Bar_ProgressUpdate( pProgress, 100*pAig->nAndPrev/pAig->nAndTotal, NULL );
-
-        Bar_ProgressUpdate( pProgress, i, NULL );
-        if ( !Aig_ObjIsNode(pObj) )
-            continue;
-        if ( i > nNodesOld )
-            break;
-
-        // consider freeing the cuts
-//        if ( (i & 0xFFF) == 0 && Aig_MmFixedReadMemUsage(p->pMemCuts)/(1<<20) > 100 )
-//            Dar_ManCutsStart( p );
-
-        // compute cuts for the node
-        p->nNodesTried++;
-clk = clock();
-        Dar_ObjComputeCuts_rec( p, pObj );
-p->timeCuts += clock() - clk;
-
-        // check if there is a trivial cut
-        Dar_ObjForEachCut( pObj, pCut, k )
-            if ( pCut->nLeaves == 0 || (pCut->nLeaves == 1 && pCut->pLeaves[0] != pObj->Id && Aig_ManObj(p->pAig, pCut->pLeaves[0])) )
-                break;
-        if ( k < (int)pObj->nCuts )
-        {
-            assert( pCut->nLeaves < 2 );
-            if ( pCut->nLeaves == 0 ) // replace by constant
-            {
-                assert( pCut->uTruth == 0 || pCut->uTruth == 0xFFFF );
-                pObjNew = Aig_NotCond( Aig_ManConst1(p->pAig), pCut->uTruth==0 );
-            }
-            else
-            {
-                assert( pCut->uTruth == 0xAAAA || pCut->uTruth == 0x5555 );
-                pObjNew = Aig_NotCond( Aig_ManObj(p->pAig, pCut->pLeaves[0]), pCut->uTruth==0x5555 );
-            }
-            // remove the old cuts
-            Dar_ObjSetCuts( pObj, NULL );
-            // replace the node
-            Aig_ObjReplace( pAig, pObj, pObjNew, 1, p->pPars->fUpdateLevel );
-            continue;
-        }
-
-        // evaluate the cuts
-        p->GainBest = -1;
-        Required = pAig->vLevelR? Aig_ObjRequiredLevel(pAig, pObj) : AIG_INFINITY;
-        Dar_ObjForEachCut( pObj, pCut, k )
-            Dar_LibEval( p, pObj, pCut, Required );
-        // check the best gain
-        if ( !(p->GainBest > 0 || (p->GainBest == 0 && p->pPars->fUseZeros)) )
-        {
-//            Aig_ObjOrderAdvance( pAig );
-            continue;
-        }
-        // remove the old cuts
-        Dar_ObjSetCuts( pObj, NULL );
-        // if we end up here, a rewriting step is accepted
-        nNodeBefore = Aig_ManNodeNum( pAig );
-        pObjNew = Dar_LibBuildBest( p ); // pObjNew can be complemented!
-        pObjNew = Aig_NotCond( pObjNew, Aig_ObjPhaseReal(pObjNew) ^ pObj->fPhase );
-        assert( (int)Aig_Regular(pObjNew)->Level <= Required );
-        // replace the node
-        Aig_ObjReplace( pAig, pObj, pObjNew, 1, p->pPars->fUpdateLevel );
-        // compare the gains
-        nNodeAfter = Aig_ManNodeNum( pAig );
-        assert( p->GainBest <= nNodeBefore - nNodeAfter );
-        // count gains of this class
-        p->ClassGains[p->ClassBest] += nNodeBefore - nNodeAfter;
-    }
-//    Aig_ManOrderStop( pAig );
-
-p->timeTotal = clock() - clkStart;
-p->timeOther = p->timeTotal - p->timeCuts - p->timeEval;
-
-    Bar_ProgressStop( pProgress );
-    p->nCutMemUsed = Aig_MmFixedReadMemUsage(p->pMemCuts)/(1<<20);
-    Dar_ManCutsFree( p );
-    // put the nodes into the DFS order and reassign their IDs
-//    Aig_NtkReassignIds( p );
-    // fix the levels
-//    Aig_ManVerifyLevel( pAig );
-    if ( p->pPars->fFanout )
-        Aig_ManFanoutStop( pAig );
-    if ( p->pPars->fUpdateLevel )
-    {
-//        Aig_ManVerifyReverseLevel( pAig );
-        Aig_ManStopReverseLevels( pAig );
-    }
-    // stop the rewriting manager
-    Dar_ManStop( p );
-    Aig_ManCheckPhase( pAig );
-    // check
-    if ( !Aig_ManCheck( pAig ) )
-    {
-        printf( "Aig_ManRewrite: The network check has failed.\n" );
-        return 0;
-    }
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_MmFixed_t * Dar_ManComputeCuts( Aig_Man_t * pAig, int nCutsMax )
-{
-    Dar_Man_t * p;
-    Dar_RwrPar_t Pars, * pPars = &Pars; 
-    Aig_Obj_t * pObj;
-    Aig_MmFixed_t * pMemCuts;
-    int i, nNodes, clk = 0, clkStart = clock();
-    // remove dangling nodes
-    if ( nNodes = Aig_ManCleanup( pAig ) )
-    {
-//        printf( "Removing %d nodes.\n", nNodes );
-    }
-    // create default parameters
-    Dar_ManDefaultRwrParams( pPars );
-    pPars->nCutsMax = nCutsMax;
-    // create rewriting manager
-    p = Dar_ManStart( pAig, pPars );
-    // set elementary cuts for the PIs
-    Dar_ManCutsStart( p );
-    // compute cuts for each nodes in the topological order
-    Aig_ManForEachNode( pAig, pObj, i )
-        Dar_ObjComputeCuts( p, pObj );
-    // free the cuts
-    pMemCuts = p->pMemCuts;
-    p->pMemCuts = NULL;
-//    Dar_ManCutsFree( p );
-    // stop the rewriting manager
-    Dar_ManStop( p );
-    return pMemCuts;
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darCut.c b/src/aig/dar/darCut.c
deleted file mode 100644
index 08bd77a9..00000000
--- a/src/aig/dar/darCut.c
+++ /dev/null
@@ -1,698 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darCut.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Computation of 4-input cuts.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darCut.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of 1s in the machine word.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dar_WordCountOnes( unsigned uWord )
-{
-    uWord = (uWord & 0x55555555) + ((uWord>>1) & 0x55555555);
-    uWord = (uWord & 0x33333333) + ((uWord>>2) & 0x33333333);
-    uWord = (uWord & 0x0F0F0F0F) + ((uWord>>4) & 0x0F0F0F0F);
-    uWord = (uWord & 0x00FF00FF) + ((uWord>>8) & 0x00FF00FF);
-    return  (uWord & 0x0000FFFF) + (uWord>>16);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compute the cost of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dar_CutFindValue( Dar_Man_t * p, Dar_Cut_t * pCut )
-{
-    Aig_Obj_t * pLeaf;
-    int i, Value, nOnes;
-    assert( pCut->fUsed );
-    Value = 0;
-    nOnes = 0;
-    Dar_CutForEachLeaf( p->pAig, pCut, pLeaf, i )
-    {
-        if ( pLeaf == NULL )
-            return 0;
-        assert( pLeaf != NULL );
-        Value += pLeaf->nRefs;
-        nOnes += (pLeaf->nRefs == 1);
-    }
-    if ( pCut->nLeaves < 2 )
-        return 1001;
-//    Value = Value * 100 / pCut->nLeaves;
-    if ( Value > 1000 )
-        Value = 1000;
-    if ( nOnes > 3 )
-        Value = 5 - nOnes;
-    return Value;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the next free cut to use.]
-
-  Description [Uses the cut with the smallest value.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dar_Cut_t * Dar_CutFindFree( Dar_Man_t * p, Aig_Obj_t * pObj )
-{
-    Dar_Cut_t * pCut, * pCutMax;
-    int i;
-    pCutMax = NULL;
-    Dar_ObjForEachCutAll( pObj, pCut, i )
-    {
-        if ( pCut->fUsed == 0 )
-            return pCut;
-        if ( pCut->nLeaves < 3 )
-            continue;
-        if ( pCutMax == NULL || pCutMax->Value > pCut->Value )
-            pCutMax = pCut;
-    }
-    if ( pCutMax == NULL )
-    {
-        Dar_ObjForEachCutAll( pObj, pCut, i )
-        {
-            if ( pCut->nLeaves < 2 )
-                continue;
-            if ( pCutMax == NULL || pCutMax->Value > pCut->Value )
-                pCutMax = pCut;
-        }
-    }
-    if ( pCutMax == NULL )
-    {
-        Dar_ObjForEachCutAll( pObj, pCut, i )
-        {
-            if ( pCutMax == NULL || pCutMax->Value > pCut->Value )
-                pCutMax = pCut;
-        }
-    }
-    assert( pCutMax != NULL );
-    pCutMax->fUsed = 0;
-    return pCutMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if pDom is contained in pCut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dar_CutCheckDominance( Dar_Cut_t * pDom, Dar_Cut_t * pCut )
-{
-    int i, k;
-    assert( pDom->fUsed && pCut->fUsed );
-    for ( i = 0; i < (int)pDom->nLeaves; i++ )
-    {
-        for ( k = 0; k < (int)pCut->nLeaves; k++ )
-            if ( pDom->pLeaves[i] == pCut->pLeaves[k] )
-                break;
-        if ( k == (int)pCut->nLeaves ) // node i in pDom is not contained in pCut
-            return 0;
-    }
-    // every node in pDom is contained in pCut
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the cut is contained.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dar_CutFilter( Aig_Obj_t * pObj, Dar_Cut_t * pCut )
-{ 
-    Dar_Cut_t * pTemp;
-    int i;
-    assert( pCut->fUsed );
-    // go through the cuts of the node
-    Dar_ObjForEachCut( pObj, pTemp, i )
-    {
-        if ( pTemp == pCut )
-            continue;
-        if ( pTemp->nLeaves > pCut->nLeaves )
-        {
-            // skip the non-contained cuts
-            if ( (pTemp->uSign & pCut->uSign) != pCut->uSign )
-                continue;
-            // check containment seriously
-            if ( Dar_CutCheckDominance( pCut, pTemp ) )
-            {
-                // remove contained cut
-                pTemp->fUsed = 0;
-            }
-         }
-        else
-        {
-            // skip the non-contained cuts
-            if ( (pTemp->uSign & pCut->uSign) != pTemp->uSign )
-                continue;
-            // check containment seriously
-            if ( Dar_CutCheckDominance( pTemp, pCut ) )
-            {
-                // remove the given cut
-                pCut->fUsed = 0;
-                return 1;
-            }
-        }
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Merges two cuts.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dar_CutMergeOrdered( Dar_Cut_t * pC, Dar_Cut_t * pC0, Dar_Cut_t * pC1 )
-{ 
-    int i, k, c;
-    assert( pC0->nLeaves >= pC1->nLeaves );
-
-    // the case of the largest cut sizes
-    if ( pC0->nLeaves == 4 && pC1->nLeaves == 4 )
-    {
-        if ( pC0->uSign != pC1->uSign )
-            return 0;
-        for ( i = 0; i < (int)pC0->nLeaves; i++ )
-            if ( pC0->pLeaves[i] != pC1->pLeaves[i] )
-                return 0;
-        for ( i = 0; i < (int)pC0->nLeaves; i++ )
-            pC->pLeaves[i] = pC0->pLeaves[i];
-        pC->nLeaves = pC0->nLeaves;
-        return 1;
-    }
-
-    // the case when one of the cuts is the largest
-    if ( pC0->nLeaves == 4 )
-    {
-        if ( (pC0->uSign & pC1->uSign) != pC1->uSign )
-            return 0;
-        for ( i = 0; i < (int)pC1->nLeaves; i++ )
-        {
-            for ( k = (int)pC0->nLeaves - 1; k >= 0; k-- )
-                if ( pC0->pLeaves[k] == pC1->pLeaves[i] )
-                    break;
-            if ( k == -1 ) // did not find
-                return 0;
-        }
-        for ( i = 0; i < (int)pC0->nLeaves; i++ )
-            pC->pLeaves[i] = pC0->pLeaves[i];
-        pC->nLeaves = pC0->nLeaves;
-        return 1;
-    }
-
-    // compare two cuts with different numbers
-    i = k = 0;
-    for ( c = 0; c < 4; c++ )
-    {
-        if ( k == (int)pC1->nLeaves )
-        {
-            if ( i == (int)pC0->nLeaves )
-            {
-                pC->nLeaves = c;
-                return 1;
-            }
-            pC->pLeaves[c] = pC0->pLeaves[i++];
-            continue;
-        }
-        if ( i == (int)pC0->nLeaves )
-        {
-            if ( k == (int)pC1->nLeaves )
-            {
-                pC->nLeaves = c;
-                return 1;
-            }
-            pC->pLeaves[c] = pC1->pLeaves[k++];
-            continue;
-        }
-        if ( pC0->pLeaves[i] < pC1->pLeaves[k] )
-        {
-            pC->pLeaves[c] = pC0->pLeaves[i++];
-            continue;
-        }
-        if ( pC0->pLeaves[i] > pC1->pLeaves[k] )
-        {
-            pC->pLeaves[c] = pC1->pLeaves[k++];
-            continue;
-        }
-        pC->pLeaves[c] = pC0->pLeaves[i++]; 
-        k++;
-    }
-    if ( i < (int)pC0->nLeaves || k < (int)pC1->nLeaves )
-        return 0;
-    pC->nLeaves = c;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prepares the object for FPGA mapping.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dar_CutMerge( Dar_Cut_t * pCut, Dar_Cut_t * pCut0, Dar_Cut_t * pCut1 )
-{ 
-    assert( !pCut->fUsed );
-    // merge the nodes
-    if ( pCut0->nLeaves <= pCut1->nLeaves )
-    {
-        if ( !Dar_CutMergeOrdered( pCut, pCut1, pCut0 ) )
-            return 0;
-    }
-    else
-    {
-        if ( !Dar_CutMergeOrdered( pCut, pCut0, pCut1 ) )
-            return 0;
-    }
-    pCut->uSign = pCut0->uSign | pCut1->uSign;
-    pCut->fUsed = 1;
-    return 1;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the stretching phase of the cut w.r.t. the merged cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Dar_CutTruthPhase( Dar_Cut_t * pCut, Dar_Cut_t * pCut1 )
-{
-    unsigned uPhase = 0;
-    int i, k;
-    for ( i = k = 0; i < (int)pCut->nLeaves; i++ )
-    {
-        if ( k == (int)pCut1->nLeaves )
-            break;
-        if ( pCut->pLeaves[i] < pCut1->pLeaves[k] )
-            continue;
-        assert( pCut->pLeaves[i] == pCut1->pLeaves[k] );
-        uPhase |= (1 << i);
-        k++;
-    }
-    return uPhase;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Swaps two advancent variables of the truth table.]
-
-  Description [Swaps variable iVar and iVar+1.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Dar_CutTruthSwapAdjacentVars( unsigned uTruth, int iVar )
-{
-    assert( iVar >= 0 && iVar <= 2 );
-    if ( iVar == 0 )
-        return (uTruth & 0x99999999) | ((uTruth & 0x22222222) << 1) | ((uTruth & 0x44444444) >> 1);
-    if ( iVar == 1 )
-        return (uTruth & 0xC3C3C3C3) | ((uTruth & 0x0C0C0C0C) << 2) | ((uTruth & 0x30303030) >> 2);
-    if ( iVar == 2 )
-        return (uTruth & 0xF00FF00F) | ((uTruth & 0x00F000F0) << 4) | ((uTruth & 0x0F000F00) >> 4);
-    assert( 0 );
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Expands the truth table according to the phase.]
-
-  Description [The input and output truth tables are in pIn/pOut. The current number
-  of variables is nVars. The total number of variables in nVarsAll. The last argument
-  (Phase) contains shows where the variables should go.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Dar_CutTruthStretch( unsigned uTruth, int nVars, unsigned Phase )
-{
-    int i, k, Var = nVars - 1;
-    for ( i = 3; i >= 0; i-- )
-        if ( Phase & (1 << i) )
-        {
-            for ( k = Var; k < i; k++ )
-                uTruth = Dar_CutTruthSwapAdjacentVars( uTruth, k );
-            Var--;
-        }
-    assert( Var == -1 );
-    return uTruth;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Shrinks the truth table according to the phase.]
-
-  Description [The input and output truth tables are in pIn/pOut. The current number
-  of variables is nVars. The total number of variables in nVarsAll. The last argument
-  (Phase) contains shows what variables should remain.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Dar_CutTruthShrink( unsigned uTruth, int nVars, unsigned Phase )
-{
-    int i, k, Var = 0;
-    for ( i = 0; i < 4; i++ )
-        if ( Phase & (1 << i) )
-        {
-            for ( k = i-1; k >= Var; k-- )
-                uTruth = Dar_CutTruthSwapAdjacentVars( uTruth, k );
-            Var++;
-        }
-    return uTruth;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs truth table computation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Dar_CutTruth( Dar_Cut_t * pCut, Dar_Cut_t * pCut0, Dar_Cut_t * pCut1, int fCompl0, int fCompl1 )
-{
-    unsigned uTruth0 = fCompl0 ? ~pCut0->uTruth : pCut0->uTruth;
-    unsigned uTruth1 = fCompl1 ? ~pCut1->uTruth : pCut1->uTruth;
-    uTruth0 = Dar_CutTruthStretch( uTruth0, pCut0->nLeaves, Dar_CutTruthPhase(pCut, pCut0) );
-    uTruth1 = Dar_CutTruthStretch( uTruth1, pCut1->nLeaves, Dar_CutTruthPhase(pCut, pCut1) );
-    return uTruth0 & uTruth1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Minimize support of the cut.]
-
-  Description [Returns 1 if the node's support has changed]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dar_CutSuppMinimize( Dar_Cut_t * pCut )
-{
-    unsigned uMasks[4][2] = {
-        { 0x5555, 0xAAAA },
-        { 0x3333, 0xCCCC },
-        { 0x0F0F, 0xF0F0 },
-        { 0x00FF, 0xFF00 }
-    };
-    unsigned uPhase = 0, uTruth = 0xFFFF & pCut->uTruth;
-    int i, k, nLeaves;
-    assert( pCut->fUsed );
-    // compute the truth support of the cut's function
-    nLeaves = pCut->nLeaves;
-    for ( i = 0; i < (int)pCut->nLeaves; i++ )
-        if ( (uTruth & uMasks[i][0]) == ((uTruth & uMasks[i][1]) >> (1 << i)) )
-            nLeaves--;
-        else
-            uPhase |= (1 << i);
-    if ( nLeaves == (int)pCut->nLeaves )
-        return 0;
-    // shrink the truth table
-    uTruth = Dar_CutTruthShrink( uTruth, pCut->nLeaves, uPhase );
-    pCut->uTruth = 0xFFFF & uTruth;
-    // update leaves and signature
-    pCut->uSign = 0;
-    for ( i = k = 0; i < (int)pCut->nLeaves; i++ )
-    {
-        if ( !(uPhase & (1 << i)) )
-            continue;    
-        pCut->pLeaves[k++] = pCut->pLeaves[i];
-        pCut->uSign |= Aig_ObjCutSign( pCut->pLeaves[i] );
-    }
-    assert( k == nLeaves );
-    pCut->nLeaves = nLeaves;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_ManCutsFree( Dar_Man_t * p )
-{
-    if ( p->pMemCuts == NULL )
-        return;
-    Aig_MmFixedStop( p->pMemCuts, 0 );
-    p->pMemCuts = NULL;
-//    Aig_ManCleanData( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dar_Cut_t * Dar_ObjPrepareCuts( Dar_Man_t * p, Aig_Obj_t * pObj )
-{
-    Dar_Cut_t * pCutSet, * pCut;
-    int i;
-    assert( Dar_ObjCuts(pObj) == NULL );
-    pObj->nCuts = p->pPars->nCutsMax;
-    // create the cutset of the node
-    pCutSet = (Dar_Cut_t *)Aig_MmFixedEntryFetch( p->pMemCuts );
-    Dar_ObjSetCuts( pObj, pCutSet );
-    Dar_ObjForEachCut( pObj, pCut, i )
-        pCut->fUsed = 0;
-    // add unit cut if needed
-    pCut = pCutSet;
-    pCut->fUsed = 1;
-    if ( Aig_ObjIsConst1(pObj) )
-    {
-        pCut->nLeaves = 0;
-        pCut->uSign = 0;
-        pCut->uTruth = 0xFFFF;
-    }
-    else
-    {
-        pCut->nLeaves = 1;
-        pCut->pLeaves[0] = pObj->Id;
-        pCut->uSign = Aig_ObjCutSign( pObj->Id );
-        pCut->uTruth = 0xAAAA;
-    }
-    pCut->Value = Dar_CutFindValue( p, pCut );
-    return pCutSet;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_ManCutsStart( Dar_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManCleanData( p->pAig );
-    Aig_MmFixedRestart( p->pMemCuts );
-    Dar_ObjPrepareCuts( p, Aig_ManConst1(p->pAig) );
-    Aig_ManForEachPi( p->pAig, pObj, i )
-        Dar_ObjPrepareCuts( p, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dar_Cut_t * Dar_ObjComputeCuts( Dar_Man_t * p, Aig_Obj_t * pObj )
-{
-    Aig_Obj_t * pFanin0 = Aig_ObjReal_rec( Aig_ObjChild0(pObj) );
-    Aig_Obj_t * pFanin1 = Aig_ObjReal_rec( Aig_ObjChild1(pObj) );
-    Aig_Obj_t * pFaninR0 = Aig_Regular(pFanin0);
-    Aig_Obj_t * pFaninR1 = Aig_Regular(pFanin1);
-    Dar_Cut_t * pCutSet, * pCut0, * pCut1, * pCut;
-    int i, k, RetValue;
-
-    assert( !Aig_IsComplement(pObj) );
-    assert( Aig_ObjIsNode(pObj) );
-    assert( Dar_ObjCuts(pObj) == NULL );
-    assert( Dar_ObjCuts(pFaninR0) != NULL );
-    assert( Dar_ObjCuts(pFaninR1) != NULL );
-
-    // set up the first cut
-    pCutSet = Dar_ObjPrepareCuts( p, pObj );
-    // make sure fanins cuts are computed
-    Dar_ObjForEachCut( pFaninR0, pCut0, i )
-    Dar_ObjForEachCut( pFaninR1, pCut1, k )
-    {
-        p->nCutsAll++;
-        // make sure K-feasible cut exists
-        if ( Dar_WordCountOnes(pCut0->uSign | pCut1->uSign) > 4 )
-            continue;
-        // get the next cut of this node
-        pCut = Dar_CutFindFree( p, pObj );
-        // create the new cut
-        if ( !Dar_CutMerge( pCut, pCut0, pCut1 ) )
-        {
-            assert( !pCut->fUsed );
-            continue;
-        }
-        p->nCutsTried++;
-        // check dominance
-        if ( Dar_CutFilter( pObj, pCut ) )
-        {
-            assert( !pCut->fUsed );
-            continue;
-        }
-        // compute truth table
-        pCut->uTruth = 0xFFFF & Dar_CutTruth( pCut, pCut0, pCut1, Aig_IsComplement(pFanin0), Aig_IsComplement(pFanin1) );
-
-        // minimize support of the cut
-        if ( Dar_CutSuppMinimize( pCut ) )
-        {
-            RetValue = Dar_CutFilter( pObj, pCut );
-            assert( !RetValue );
-        }
-
-        // assign the value of the cut
-        pCut->Value = Dar_CutFindValue( p, pCut );
-        // if the cut contains removed node, do not use it
-        if ( pCut->Value == 0 )
-        {
-            p->nCutsSkipped++;
-            pCut->fUsed = 0;
-        }
-        else if ( pCut->nLeaves < 2 )
-            return pCutSet;
-    }
-    // count the number of nontrivial cuts cuts
-    Dar_ObjForEachCut( pObj, pCut, i )
-        p->nCutsUsed += pCut->fUsed;
-    // discount trivial cut
-    p->nCutsUsed--;
-    return pCutSet;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dar_Cut_t * Dar_ObjComputeCuts_rec( Dar_Man_t * p, Aig_Obj_t * pObj )
-{
-    if ( Dar_ObjCuts(pObj) )
-        return Dar_ObjCuts(pObj);
-    if ( Aig_ObjIsBuf(pObj) )
-        return Dar_ObjComputeCuts_rec( p, Aig_ObjFanin0(pObj) );
-    Dar_ObjComputeCuts_rec( p, Aig_ObjFanin0(pObj) );
-    Dar_ObjComputeCuts_rec( p, Aig_ObjFanin1(pObj) );
-    return Dar_ObjComputeCuts( p, pObj );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darData.c b/src/aig/dar/darData.c
deleted file mode 100644
index abf1d378..00000000
--- a/src/aig/dar/darData.c
+++ /dev/null
@@ -1,11287 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [dar_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Storage for AIG subgraph data.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: dar_.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-const int s_nDataSize1 = 2*43906;
-unsigned int s_Data1[2*43906] = {
-    4,    6,    5,    7,    9,   11,    5,    6,    4,    7,   15,   17,
-    2,    8,    4,   21,    3,   10,    5,   25,    7,   25,    9,   25,
-    2,   10,    7,   33,    9,   33,    2,   14,    5,   39,    6,   39,
-   17,   39,    3,   16,    7,   47,   33,   47,    2,   16,    4,   53,
-    7,   53,    3,   14,    5,   59,   17,   59,   53,   59,    3,   11,
-    7,   67,    4,   68,    5,   66,    6,   73,   33,   67,    7,   76,
-    5,   77,    9,   77,    9,   66,   33,   85,    3,    9,    4,   88,
-    7,   91,   88,   93,    6,   88,   21,   89,   11,   89,   21,  100,
-   25,  101,   11,   88,    7,  107,   33,  107,    2,   11,    5,  113,
-    7,  112,   30,  113,   25,  113,    5,  120,    7,  121,    9,  120,
-    9,  113,   25,  128,   21,  129,    9,  112,    2,    9,    6,  137,
-    5,  138,   11,  136,    3,   17,    7,  144,  113,  145,   15,  144,
-  113,  151,    3,   15,    6,  155,    4,  156,   17,  154,  113,  161,
-    2,   17,    7,  165,    5,  166,  155,  165,   15,  164,    2,   15,
-    6,  174,   17,  174,    3,   13,  113,  181,  135,  181,  143,  181,
-    2,   12,    9,  189,  181,  189,    9,  192,    2,   13,   85,  197,
-  107,  197,    3,   12,    7,  203,   11,  203,   33,  203,  197,  203,
-    9,  211,    3,   19,    7,  215,   33,  215,  173,  215,  179,  215,
-    2,   18,  215,  225,    2,   19,  151,  229,  161,  229,    3,   18,
-  113,  235,  229,  235,    2,    4,   25,  241,    9,  241,   15,  241,
-   11,  241,    6,  240,    7,  240,   59,  253,    7,  241,    9,  257,
-    6,  241,  253,  261,    3,    5,  251,  265,    6,  266,  241,  269,
-  253,  265,    7,  272,    7,  273,  241,  277,   53,  265,    7,  280,
-  248,  265,    9,  285,   11,  265,  241,  288,    9,  291,   17,  265,
-    9,  265,  257,  265,   25,  299,  251,  298,    7,  264,    3,  305,
-    5,  305,  128,  305,  101,  305,  299,  305,  241,  305,    7,  317,
-  265,  319,    9,  305,  113,  322,  113,  305,    9,  326,    6,  264,
-  241,  331,   17,  331,   53,  331,  253,  331,    7,  265,   59,  341,
-  241,  343,  331,  341,  241,  346,  241,  347,   15,  341,  113,  353,
-  241,  340,    7,  357,  265,  357,   59,  357,  331,  357,  256,  265,
-    7,  367,   59,  367,  331,  367,    6,  265,    5,  375,  242,  375,
-  316,  375,   25,  375,  241,  382,  305,  375,  241,  386,  241,  387,
-   11,  375,  241,  375,  265,  394,    7,  397,   25,  394,  305,  394,
-  251,  395,  257,  375,  241,  374,  260,  265,  241,  265,  251,  413,
-  331,  413,  261,  413,  375,  413,  257,  413,   19,  413,   12,  413,
-   11,  413,    9,  428,    9,  413,   11,  433,   11,  432,   15,  413,
-   11,  412,    9,  441,    7,  413,  241,  445,  265,  445,  375,  445,
-  409,  445,  411,  445,    6,  412,  241,  457,  445,  457,  241,  460,
-    6,  413,  357,  465,  367,  465,    7,  412,  265,  471,   59,  471,
-  331,  471,  465,  471,  241,  479,    2,    6,  353,  483,  322,  483,
-   30,  483,   25,  483,    9,  490,  305,  483,    9,  494,   19,  483,
-  413,  483,   12,  483,  244,  483,  241,  483,    9,  506,    9,  483,
-  305,  510,   25,  510,   11,  510,  241,  510,  257,  510,  247,  483,
-   11,  483,    2,  524,    4,  527,    5,  524,    3,  531,    9,  524,
-  258,  483,  151,  483,  257,  483,    9,  540,  155,  483,   17,  545,
-  235,  483,  181,  483,  161,  483,    4,  482,    2,  555,    5,  482,
-    2,  559,    6,  559,   17,  559,    5,  483,    2,  567,    6,  566,
-  241,  567,  483,  573,    9,  573,    9,  567,    4,  483,    6,  581,
-    3,  582,    3,    7,  289,  587,  510,  587,   11,  591,   11,  590,
-  516,  587,  413,  587,  483,  598,  498,  587,  500,  587,   19,  587,
-  483,  606,  502,  587,   12,  587,  483,  612,  534,  587,  524,  587,
-    9,  618,  288,  587,  305,  623,   25,  623,   11,  587,  265,  629,
-  331,  631,  510,  628,    9,  628,  483,  636,  483,  628,    9,  640,
-  265,  628,  305,  645,   25,  645,  375,  628,  265,  587,   11,  653,
-   33,  655,   11,  652,   25,  659,  305,  659,  295,  587,  241,  587,
-    9,  587,    4,  668,    2,  671,    3,  668,    5,  675,  524,  668,
-  483,  668,   11,  681,   11,  680,   11,  668,  483,  686,  392,  587,
-  165,  587,  375,  587,   17,  695,   11,  695,   11,  694,  113,  587,
-  567,  587,  305,  705,   25,  705,  555,  704,    5,  586,    3,  713,
-    7,  713,  623,  713,  645,  713,  659,  713,  128,  713,  394,  713,
-  101,  713,  299,  713,  705,  713,  510,  713,  483,  713,    9,  736,
-    9,  713,  113,  740,  483,  740,  241,  713,  375,  746,  375,  713,
-  241,  750,  113,  713,    9,  754,    4,  586,    7,  759,  589,  759,
-   33,  759,    5,  587,    7,  767,    2,  768,   47,  767,  483,  773,
-  759,  767,  483,  777,   17,  767,  113,  781,  483,  781,  483,  766,
-   47,  787,  759,  787,   17,  787,  566,  587,   47,  795,  759,  795,
-   17,  795,    4,  587,    3,  803,    6,  805,    7,  802,  494,  803,
-  490,  803,  736,  803,   25,  803,  483,  816,  305,  803,  483,  820,
-  713,  803,  483,  824,  483,  803,  305,  828,   25,  828,  713,  828,
-  555,  829,  483,  802,  580,  587,  483,  587,  413,  842,   19,  842,
-   12,  842,   11,  843,    9,  851,    9,  842,   11,  855,   11,  854,
-   11,  842,    9,  860,    5,  843,  803,  865,    9,  865,  839,  865,
-  841,  865,    4,  842,  483,  875,  865,  875,  483,  878,    4,  843,
-  787,  883,  795,  883,    5,  842,  587,  889,   47,  889,  759,  889,
-   17,  889,  883,  889,  483,  899,    3,    4,  559,  903,   19,  903,
-   12,  903,  842,  903,  587,  903,  483,  912,  165,  912,    9,  903,
-   11,  918,  483,  903,  241,  923,  555,  923,  587,  922,   11,  922,
-   15,  903,   11,  903,    9,  934,  483,  934,  524,  903,  692,  903,
-  767,  903,  375,  945,  165,  903,    7,  949,  587,  948,    6,  902,
-    3,  955,    7,  902,  787,  959,  795,  959,  889,  959,  767,  959,
-  483,  967,   33,  959,    7,  903,  956,  973,   88,  973,    4,  973,
-    3,  973,  955,  980,    9,  980,    3,  972,    4,  972,  955,  973,
-    3,  990,  375,  973,    9,  973,    3,  996,    6,  903,    4, 1001,
-    3, 1001,    3, 1000,    4, 1000,    2,    5,  955, 1011,  914, 1011,
-  918, 1011,   11, 1017,   11, 1016,  912, 1011,  483, 1022,  920, 1011,
-  906, 1011,   19, 1011,  903, 1030,  842, 1011,  903, 1034,  908, 1011,
-  910, 1011,   12, 1011,  903, 1042,  922, 1011,  587, 1046,  928, 1011,
-  936, 1011,  934, 1011,    9, 1054,   15, 1011,   11, 1011,  918, 1060,
-    9, 1060,  903, 1064,  903, 1060,    9, 1068,  483, 1011,  912, 1072,
-  903, 1072,  587, 1076,  587, 1072,  903, 1080,  155, 1072,  587, 1011,
-  922, 1086,  483, 1086,  903, 1090,  903, 1086,  483, 1094,   11, 1087,
-    9, 1099,    9, 1086,   11, 1103,   17, 1011,    9, 1011,  934, 1108,
-  903, 1108,   11, 1113,   11, 1112,   11, 1108,  903, 1118,  587, 1108,
-   11, 1123,  668, 1011,   11, 1127,  544, 1011,  155, 1011,  483, 1132,
-   67, 1011,  375, 1137,    7, 1010,    2, 1141,  959, 1141,   85, 1141,
-  107, 1141,  203, 1141,   67, 1141,    9, 1153,  215, 1141,   47, 1141,
-  759, 1141,    6, 1010,    2, 1163,    5, 1163,   17, 1163,    7, 1011,
-    2, 1171,    5, 1171,    2, 1170,    5, 1170, 1163, 1171,    5, 1180,
-    2, 1181,  483, 1171,  903, 1170,  375, 1189,  972, 1011,  375, 1193,
-    6, 1011,    2, 1197,    5, 1197,    2, 1196,    5, 1196, 1141, 1197,
-    2, 1206,    5, 1207,  903, 1196, 1000, 1011,  903, 1011,   19, 1216,
-  842, 1216,   12, 1216,   11, 1217,    9, 1225,  587, 1216,  483, 1228,
-   11, 1216,    9, 1232,    9, 1216,   11, 1237,   11, 1236,   15, 1216,
-  483, 1216,  587, 1244,    7, 1217,   59, 1249,  331, 1249, 1213, 1249,
- 1215, 1249,    6, 1216, 1249, 1259,    6, 1217, 1189, 1263, 1193, 1263,
-    7, 1216,  375, 1269, 1263, 1269,    3,    6,  413, 1275, 1216, 1275,
-  241, 1275,    9, 1281,   11, 1283,   11, 1280,    9, 1287,   17, 1275,
-    3, 1290,    5, 1293,    4, 1290,    2, 1297,  903, 1291, 1011, 1275,
-   11, 1275,  241, 1304,    9, 1307,  248, 1275,    9, 1311,  973, 1275,
-    9, 1315,  341, 1275,  803, 1319,    9, 1319,    5, 1274,    3, 1325,
-   17, 1325,  357, 1325,  367, 1325,  471, 1325,  341, 1325,  241, 1337,
- 1249, 1325,  253, 1325,   53, 1325,    5, 1275,    6, 1347,    2, 1348,
-  918, 1347,  903, 1347,    9, 1354,    9, 1347,  903, 1358,    4, 1275,
-    6, 1362,  265, 1363,    2,    7,  393, 1369,  334, 1369, 1325, 1369,
- 1363, 1374,   17, 1374,   62, 1369,  331, 1369,   17, 1382,   59, 1369,
-   17, 1386, 1328, 1369, 1304, 1369,    9, 1393,   17, 1369,  331, 1396,
-  241, 1397,   59, 1396, 1325, 1396,   11, 1369, 1275, 1406,    9, 1409,
-  265, 1369,  241, 1412,   11, 1413,   15, 1369,    5, 1418,    3, 1421,
-    2, 1418,    4, 1425, 1011, 1419,  107, 1369,   67, 1369,  803, 1433,
-    9, 1433, 1359, 1369,  203, 1369,  215, 1369,   85, 1369,    5, 1368,
-    2, 1447,    7, 1447,   47, 1447,   85, 1447,  107, 1447,  203, 1447,
-   67, 1447,    9, 1461,  215, 1447,  759, 1447,  959, 1447,    4, 1368,
-    2, 1471,    7, 1471,  265, 1471,    7, 1476,  331, 1471,   59, 1471,
- 1325, 1471,    5, 1369,    7, 1486,  803, 1487, 1275, 1486,  803, 1493,
-    9, 1493, 1346, 1369,  803, 1499,    9, 1499,    4, 1369,    7, 1505,
-    3, 1506, 1060, 1505,   11, 1505, 1011, 1512, 1011, 1505,    7, 1517,
-   11, 1517,   11, 1516, 1347, 1505, 1275, 1504, 1362, 1369, 1275, 1369,
-  413, 1531,   19, 1531,   12, 1531, 1216, 1531, 1011, 1531,  903, 1540,
-    9, 1531,   11, 1545,   11, 1544,   11, 1531,    9, 1550,  903, 1531,
- 1011, 1554,   11, 1530,    9, 1559,    5, 1531,  959, 1563,   47, 1563,
-  759, 1563,   17, 1563, 1527, 1563, 1529, 1563,    4, 1530, 1563, 1577,
-    4, 1531, 1493, 1581, 1499, 1581,    5, 1530,  803, 1587,    9, 1587,
- 1581, 1587,    1,  974,    1,  975,    1,  982,    1,  983,    0,  204,
-    0,  195,    0,  881,    0,  463,    0,  212,    0,  900,    0,  480,
-    0,  194,    0,  880,    0,  462,    0,  213,    0,  901,    0,  481,
-    0,  205,    0,  216,    0,  217,    1,  446,    0,  448,    0,  415,
-    0,  421,    1,   92,    0,   92,    1,   94, 1645, 1647,    1,   93,
-   88, 1650, 1645, 1653,    0,   93,    1,   95, 1657, 1659,    0,  108,
-    0,  109,    1,  360,    0,  368,    0,  358,    0,  414,    1,  447,
- 1637, 1675,    0,  449, 1635, 1679,    0,  191,    0,  877,    0,  473,
-    1,  473,    0,  459,    1,  459,    0,  891,    0,  207,    0,  458,
-    0,  876,    0,  190,    1,  458,    0,  472,    0,  890,    0,  206,
-    1,  472,    1,  977,    1,  976,    0,  399,    0,  398,    0,  397,
-    7, 1722,    0,  275,    0,  269,  241, 1728,    0,  270,    1,  279,
-    0,  321,    0,  274,    0,  271,    1,  278,    0,  320,    1,  277,
-  241, 1746,    0,  319,  265, 1750,    1,  276,    0,  318,    1,  926,
-    0, 1518,    0,  950,    0, 1519,    0,  951,    1,  998,    1,  999,
-    0,  575,    0, 1478,    0,  282,    0, 1479,    0,  283,    0,  369,
-    0,  359, 1667, 1785,    0,  420,    1,  422,    1,  927,    1, 1421,
-    5, 1794, 1419, 1797,    3, 1794, 1799, 1801,    0,  527,    2, 1804,
-  525, 1807,    4, 1804, 1809, 1811,    1,  671,    4, 1814,  669, 1817,
-    2, 1814, 1819, 1821,    0, 1293,    3, 1824, 1291, 1827,    5, 1824,
- 1829, 1831,    1, 1425,    2, 1834, 1419, 1837,    4, 1834, 1839, 1841,
-    0,  531,    5, 1844,  525, 1847,    3, 1844, 1849, 1851,    1,  675,
-    3, 1854,  669, 1857,    5, 1854, 1859, 1861,    0, 1297,    4, 1864,
- 1291, 1867,    2, 1864, 1869, 1871,    1, 1422,    0,  528,    1,  672,
-    0, 1294,    1, 1426,    0,  532,    1,  676,    0, 1298,    1,  123,
-    0,   79,    1,  993,    0,  124,    1,   80,    0, 1210,    0, 1184,
-    0,  125, 1891, 1905,    1,   81, 1893, 1909,    1,  122, 1897, 1913,
-    0,   78, 1899, 1917,    0, 1208,    0, 1182,    1,  992,    1,  361,
- 1671, 1927,    0,  574,    1,  984,    1,  985,    1,  114,    9, 1937,
-    0,   68,    1,  980,  955, 1942,    9, 1942,    0,  568,    9, 1949,
-    1,  924,    1,  925,    0,  306,  375, 1957,    0,  308, 1413, 1961,
-    0,   26,    1,  306,    1,  308,    1,  714,    0, 1142,    0, 1448,
-    0, 1450,    1, 1450, 1413, 1979,    0, 1474,    0,   54,    0,   56,
-    1, 1472,    0, 1326,    0,   60,    1,   60,    0, 1166,    0,   40,
-    1,  956,  973, 2001,  973, 2000,    0,  556,    1,   22,    0, 1475,
-    1, 1165, 1168, 2012, 1169, 2013, 2015, 2017, 1168, 2013, 1169, 2012,
- 2021, 2023,    1, 1167,    2, 2027, 1197, 2029, 1997, 2031,    0,   57,
-    1,  957,    0, 1451, 1980, 2039, 1979, 2039, 1413, 2042, 1413, 2039,
- 1979, 2046,    1, 1449,    5, 2051, 1451, 2053, 1975, 2055,    1, 1451,
- 1977, 2059, 1413, 2061,    0,  307, 1967, 2065,  375, 2067,    0,  309,
- 1969, 2071, 1413, 2073,    0,   41,    1,  307, 1958, 2079, 1957, 2079,
-  375, 2082,  375, 2079, 1957, 2086,    1,  309, 1962, 2091, 1961, 2091,
- 1413, 2094, 1413, 2091, 1961, 2098,    1,   41,    2, 2103,   43, 2105,
- 1999, 2107,    1, 1143,    5, 2111, 1171, 2113, 1973, 2115,    1,  561,
-  564, 2118,  565, 2119, 2121, 2123,  564, 2119,  565, 2118, 2127, 2129,
-    0,   91,    7, 2132,    0,  569,    1,  981,    9, 2139,  955, 2139,
-    0,   69,    9, 2145,    1,  115,    0,  432,    0,  500,    0, 1245,
-    0, 1237,    0,  501,    0,  433,    1, 1415,    1,  348,    1,  388,
-    1,  826,    1,  126,    1, 1376,    1,  380,    1,  814,    1,  118,
-    1,  302,    1,  710,    1,  102,    1,  402,    1,  834,    1,  130,
-    1,  404,    1,  836,    1,  132,    1,  314,    1,  732,    1,  104,
-    0, 1236,    0, 1244,    1, 1414,    0,  202,    1,  888,    1,  202,
- 1603, 2215,    0,  106,    1,  106, 1663, 2221,    1,  794,    0,  366,
-    0,   84,    1,  786,    1,   84, 1941, 2233,    1,  390,    1,  994,
-    1,  450,    1,  105,    1,  733,    1,  405,    1,  315,    1,  837,
-    1,  133,    1,  407,    1,  451,    1,  391,    1, 1383,    0,  905,
-    1,  905,    0, 1477,    1, 1477, 1775, 2269,    6, 2269,    7, 2269,
-    6, 2268, 2275, 2277, 1983, 2269,    7, 2268, 2273, 2283,    0,  281,
-    1,  281, 1777, 2289,    6, 2289,    7, 2289,    6, 2288, 2295, 2297,
- 1987, 2289,    7, 2288, 2293, 2303,    1, 1387,    1,  406, 2227, 2309,
-    1,  995,    0,  461,    1,  461, 1621, 2317, 1699, 2317,    0, 1261,
-    1, 1261,    0,  879,    0,  193,    1,  879, 1619, 2331, 1701, 2331,
-    1,  193, 1617, 2337, 1703, 2337,    0, 1579,    0,  211,    9, 2344,
-    1, 1579,    1,  211, 1623, 2351, 1711, 2351,    0,  479,  241, 2356,
-    0,  899,  483, 2360,    0,  227,    1,  479, 1627, 2367, 1707, 2367,
-    1,  899, 1625, 2373, 1709, 2373,    1,  227,    0, 1273,    0, 1593,
-    0,  239,    1, 1273,    1, 1593,    1,  239,    0,  478, 2367, 2393,
-    1,  478, 2359, 2397, 1615, 2397, 2357, 2397, 1687, 2397,    0, 1272,
- 2387, 2407,    1, 1272, 2381, 2411,    0,  898, 2373, 2415,    0,  210,
- 2351, 2419,    1,  898, 2363, 2423, 1613, 2423, 2361, 2423, 1695, 2423,
-    1,  210, 2347, 2433, 1611, 2433, 2345, 2433, 1697, 2433,    0, 1592,
- 2389, 2443,    0,  192,    9, 2446, 2337, 2449, 2337, 2447,    1, 1592,
- 2383, 2455,    1,  192, 1605, 2459, 2329, 2459, 1683, 2459,    0,  460,
-  241, 2466, 2317, 2469, 2317, 2467,    0,  878,  483, 2474, 2331, 2477,
- 2331, 2475,    0,  238, 2391, 2483,    1,  460, 1609, 2487, 2315, 2487,
- 1691, 2487,    1,  878, 1607, 2495, 2327, 2495, 1685, 2495,    1,  238,
- 2385, 2503,    0, 1260, 2325, 2507,    0, 1578, 2349, 2511,    0,  226,
- 2379, 2515,    1, 1260, 2323, 2519,    1, 1578, 2343, 2523,    1,  226,
- 2365, 2527,    1,  349,    1,  127,    1,  827,    1,  389,    1,  119,
-    1,  815,    1,  381,    1, 1377,    1,  131,    1,  835,    1,  303,
-    1,  403,    1,  711,    1,  103,    1, 1366,    1,  694,    1,  702,
-    9, 2563,    0,  572,    1,  572, 1931, 2569,    0, 1516,    1, 1516,
- 1761, 2575,    7, 2575,    6, 2574, 2579, 2581,    6, 2575,    7, 2574,
- 2585, 2587,    0,  944,    0,  948,    1,  578,  587, 2595,    1,  948,
- 1763, 2599,    7, 2599,    6, 2598, 2603, 2605,    6, 2599,    7, 2598,
- 2609, 2611,    1, 1186,    1,  996,    3, 2616,    1,  544,    1,  465,
-  471, 2622, 1687, 2625,    1,  197,  203, 2628, 1697, 2631,    1,  883,
-  889, 2634, 1695, 2637,    1,  181,  189, 2640, 1683, 2643,    0,  445,
- 1693, 2647, 1713, 2647,  265, 2646, 1675, 2653, 2257, 2647,  375, 2647,
-  457, 2647,    1,  445,  264, 2662,  241, 2662, 1679, 2667,  375, 2662,
-  457, 2662, 1691, 2673,    1,  865,  875, 2676, 1685, 2679,    0,  215,
-    7, 2682,    1,  215, 1633, 2687,    1, 1563,    0,  457,  241, 2692,
- 2317, 2695,    1,  457,  241, 2698,  445, 2699,  445, 2698, 1691, 2705,
-    0,  875,  483, 2708, 2331, 2711,    1,  875,  865, 2714, 1685, 2717,
-    0,  189,    9, 2720, 2337, 2723,    1,  189,  181, 2726, 1683, 2729,
-    0,  203,    7, 2732, 2215, 2735,   11, 2732, 2351, 2739,    0,  471,
-    7, 2742, 1689, 2745,  265, 2742, 2367, 2749,    0,  889,  587, 2752,
- 2373, 2755,    1,  203, 1629, 2759,  197, 2758, 1697, 2763,    1,  471,
-  265, 2766, 2647, 2769,  465, 2766, 1687, 2773,    1,  889,  883, 2776,
- 1695, 2779,    0,  107,    7, 2782, 2221, 2785,    1,  107, 1665, 2789,
-    1,  795,    0,  367, 2255, 2795,  375, 2795,    7, 2794,    1,  367,
-  265, 2802, 1783, 2805,    0,   85,    7, 2808, 2233, 2811,    0,  357,
-    7, 2814, 1927, 2817,    1,   85, 2145, 2821,    1,  357,  265, 2824,
- 1785, 2827,    1,  787,    0,  573,  483, 2832, 2569, 2835,    1,  579,
-    1,  573, 1773, 2841,    1,  997,    1,  545,    1, 1187,  903, 2849,
-    1, 1367,    0,  949,    7, 2854, 2599, 2857,    0,  945,  483, 2861,
-    1,  949, 1767, 2865,    0, 1517,    7, 2868, 2575, 2871,    1, 1517,
- 1765, 2875,    1,  703,    1,  695,    1,  332,    1,  266, 1731, 2885,
- 1733, 2885,    1, 1012,    1,   30,  113, 2892,    0,  316,  265, 2896,
-  375, 2897,    0,  272,    7, 2902, 1735, 2903,    1,  736,  803, 2908,
-    1,  316, 1737, 2913,  375, 2912,    1,  272, 1727, 2919,  241, 2918,
-    0, 1374, 2545, 2925,    1, 1374, 1363, 2928,    1, 1382,    0,  904,
-  483, 2934, 2265, 2937,    1,  904,    0, 1476,    7, 2942, 2269, 2945,
-    1, 1476, 1779, 2949, 2011, 2949,    0,  280,    7, 2954, 2289, 2957,
-    1,  280, 1781, 2961, 2035, 2961,    1, 1386,    1,   99,    1,  991,
-    0, 1181,    2, 2972,    0,  347, 2165, 2977,    1,  347,    1,  263,
-  273, 2983,  272, 2982, 2985, 2987,  272, 2983,  273, 2982, 2991, 2993,
-    0,   77,    0, 1207,    5, 2998,    1,   77,    5, 3002, 1917, 3005,
-    9, 3003,    0,  121,    7, 3010, 1913, 3013,    9, 3011,    0,  387,
- 2259, 3019,    1,  121,    9, 3023,    1,  825,  483, 3027,    1,  387,
-  241, 3030,  241, 3031,    1,   98,    0, 1206,    2, 3038,    0,  386,
- 2237, 3043, 3033, 3043,    1,  386,  241, 3048,    1,  824,  483, 3052,
-    1,  990,    3, 3056,    0,  120, 3023, 3061,    9, 3063,    0, 1180,
-    5, 3066,    1,  120, 3016, 3071,    5, 3070, 1897, 3075, 3013, 3075,
- 3011, 3071,    9, 3080,    9, 3070,    9, 3071, 3011, 3086,    0,   76,
- 3008, 3091,    7, 3090, 1899, 3095, 3005, 3095, 3003, 3091,    9, 3100,
-    9, 3091, 3003, 3104,    0,  346, 2531, 3109,    1,   76, 2997, 3113,
-    9, 3115,    1,  776,    1,  346,  241, 3120, 2977, 3123,    1,   21,
-    2, 3127, 1275, 3129,    9, 3131,    4, 3126, 3133, 3135,    2, 3126,
-  668, 3139, 3135, 3141,  587, 3139,    9, 3144, 3135, 3147,    9, 3139,
-  587, 3150, 3135, 3153,  100, 3126,  129, 3126,  129, 3127,  100, 3127,
-   89, 3127,   11, 3164,   11, 3127,   89, 3169,   89, 3168,   89, 3126,
-    0,   25, 2243, 3177, 2547, 3177, 2539, 3177, 2533, 3177, 3024, 3177,
-    3, 3177, 1369, 3189,   11, 3191,    5, 3176, 3193, 3195,    3, 3176,
-  524, 3199, 3195, 3201,  483, 3199,   11, 3204, 3195, 3207,   11, 3199,
-  483, 3210, 3195, 3213, 3023, 3177,    9, 3216,  101, 3177,  128, 3177,
-  113, 3177,    9, 3224,    9, 3177, 3023, 3228,  113, 3228,    1,   33,
-    5, 3234,    6, 3237, 2997, 3235,    9, 3241, 3177, 3235,   67, 3235,
-    9, 3247,   67, 3234, 3239, 3251,    1,   25,  128, 3254,  101, 3254,
-  113, 3255,    9, 3254,  113, 3262,  113, 3254,    9, 3266,    9, 3267,
-    0,   33, 2759, 3273, 2789, 3273, 2821, 3273,    9, 3273,   67, 3272,
-    9, 3283,    1,  251,  298, 3286,  395, 3286,  395, 3287,  298, 3287,
-  257, 3287,  265, 3297,  265, 3296,  265, 3287,  257, 3302,  265, 3286,
-    0,  305, 2249, 3309, 2553, 3309, 2543, 3309, 2537, 3309, 3034, 3309,
- 3031, 3309,  241, 3320, 3235, 3309,  299, 3309,  394, 3309,  375, 3309,
-  241, 3330,  241, 3309, 3031, 3334,  375, 3334,  241, 3308,  375, 3341,
-    1,  331, 2647, 3345,  413, 3345,  241, 3344, 1369, 3344,  341, 3344,
-    0,  253,    7, 3356,  265, 3356, 3345, 3357,    1,  555,  923, 3364,
-  923, 3365,  704, 3364,  829, 3364,  829, 3365,  704, 3365,    0,  713,
- 2245, 3379, 2549, 3379, 2541, 3379, 2535, 3379, 3028, 3379, 3027, 3379,
-  483, 3390, 3235, 3379,  705, 3379,  828, 3379,  803, 3379,  483, 3400,
-  483, 3379, 3027, 3404,  803, 3404,    1,  759,    3, 3410,    6, 3413,
- 3273, 3411,  767, 3410, 3415, 3419,    0,  559,    0,  251,  413, 3424,
-  413, 3425,  257, 3425,  413, 3431,  412, 3430, 3433, 3435,  412, 3431,
-  413, 3430, 3439, 3441,    1,  305,    3, 3445,  375, 3447,    3, 3444,
-  394, 3444,  299, 3444,  241, 3444,  375, 3456,  375, 3444,  241, 3460,
-    1,  253,  265, 3464,    0,  555,    4, 3469,   15, 3471,  483, 3473,
-    2, 3468, 3475, 3477,    4, 3468,  524, 3481, 3477, 3483,   11, 3481,
-  483, 3486, 3477, 3489,  483, 3481,   11, 3492, 3477, 3495,    1,  713,
-    5, 3499,   17, 3501,  587, 3503,    3, 3498, 3505, 3507,    5, 3498,
-  668, 3511, 3507, 3513,    9, 3511,  587, 3516, 3507, 3519,  587, 3511,
-    9, 3522, 3507, 3525,  828, 3498,  705, 3498,  483, 3498,  803, 3532,
-  803, 3498,  483, 3536,    1,  559,  903, 3540,    1,  955,  980, 3544,
-    3, 3544,  973, 3549,  973, 3548,  973, 3545, 2139, 3555, 1011, 3544,
-  973, 3544,    3, 3560,    0, 1141,    2, 3564,    9, 3565, 3411, 3565,
-    0, 1447,    9, 3573, 3411, 3573,    1, 1471,    4, 3579,   11, 3581,
- 1369, 3583,    2, 3578, 3585, 3587,    4, 3578, 1418, 3591, 3587, 3593,
-   15, 3591, 1369, 3596, 3587, 3599, 1369, 3591,   15, 3602, 3587, 3605,
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-    1,  652,    1,  288,    1,  267, 1741, 4417,    1, 1013,    1, 1375,
-    1,  333, 2903, 4425, 3361, 4425,    0, 1375, 2931, 4431, 2173, 4431,
-    1,  273, 2905, 4437, 1739, 4437,    6, 4436,    7, 4437, 4443, 4445,
-    6, 4437, 3359, 4437,    7, 4436, 4449, 4453,    0,  273, 2883, 4457,
- 2913, 4457, 3351, 4457, 3457, 4457, 2923, 4457, 1749, 4457, 1743, 4457,
-    1,   31, 3224, 4473, 3177, 4473,  113, 4476,  113, 4473, 3177, 4480,
-    1,  737, 3400, 4485, 3379, 4485,  803, 4488,  803, 4485, 3379, 4492,
-    1,  317, 2903, 4497, 3361, 4497, 2900, 4497,    7, 4497,  265, 4505,
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-    0, 1397,    1,  913,    0, 1407,    1,  653,   11, 4551,    1,  289,
-    1,  629,  713, 4557,   25, 4557,  305, 4557,    0,  629,  375, 4565,
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-    9, 4603,  375, 4593,  483, 4593,    9, 4593,    1,  340,  331, 4613,
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-    6, 4627, 3248, 4625, 1941, 4625,    9, 4633,   36, 4625, 3247, 4625,
-    9, 4638,    9, 4624, 1941, 4643, 3807, 4643,   33, 4625,    9, 4648,
-    9, 4625, 3247, 4652,   33, 4652, 3807, 4625,    9, 4659,    0, 1170,
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- 1925, 4745, 3563, 4745, 3553, 4745, 3549, 4745, 3547, 4745, 2005, 4745,
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-  265, 4793,  483, 4787,    0,  144,  483, 4801,    1,  972, 3551, 4805,
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-  955, 5947,    9, 5947,  375, 5920, 4745, 5953,  955, 5920,    3, 5956,
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- 4971, 6017, 6019, 6021, 4970, 6017, 4971, 6016, 6025, 6027,    7, 5997,
-    3, 6030, 4970, 6032, 4971, 6033, 6035, 6037, 4970, 6033, 4971, 6032,
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-    7, 6055, 4971, 6057,    9, 6051, 4971, 6060, 4971, 6051,    9, 6064,
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- 4745,11059, 7966,11050, 7967,11050,    4,11050,    7,11067, 1275,11067,
- 7954,11051, 7967,11051,11063,11075,  120,11050, 3867,11079,  112,11050,
-11073,11083,   66,11050, 8251,11087, 1941,11087, 6159,11087, 3807,11087,
- 9875,11087, 8165,11087,  121,11050, 7966,11051,11065,11103, 7957,11051,
-   11,11106, 1141,11051, 1447,11051,   67,11051,    7,11114,11087,11117,
-  113,11051,11083,11121, 7947,11123, 7947,11120,11083,11127,   89,11051,
- 8495,11131,   25,11050,  113,11134, 3867,11137, 3867,11135,  113,11141,
-  567,11050, 4950,11145,  587,11145, 4935,11148, 4935,11145,  587,11152,
-  973,11050,    3,11156, 4745,11159,  587,11051,  566,11162,  566,11163,
-  567,11163,11165,11169,  567,11162,11167,11173, 1011,11051, 1369,11051,
- 6625,11179, 7956,11051, 7955,11051,   33,11051, 6625,11187,   25,11051,
-11101,11191, 3984,11191, 3023,11191, 3933,11191,  113,11198,  113,11191,
- 3933,11202,  973,11051, 2139,11207,11057,11207,  567,11051, 4971,11213,
-  587,11215,  257,11051,  483,11219,  483,11050,  257,11223, 1011,11050,
-  973,11227,  972,11226,11229,11231,  972,11227,  973,11226,11235,11237,
-  257,11227,  265,11050, 5019,11243,  903,11051,    7,11246,    2,11050,
-11187,11251,11073,11251,11127,11251,11207,11251,11113,11251,11111,11251,
-11075,11251,11179,11251,11121,11251, 7947,11269,   25,11251, 5019,11251,
-    3,11050,11068,11276,11069,11277,11279,11281,11068,11277,11069,11276,
-11285,11287,11185,11277,  973,11276, 4745,11293,11103,11277,11109,11277,
-11249,11277,   10,11276,   10,11277,   11,11276, 8251,11307, 3807,11307,
- 9875,11307,11305,11307, 8165,11307,   33,11277, 7971,11319, 8165,11277,
-   25,11323, 7947,11277,  973,11277, 4805,11329, 3807,11277, 8251,11277,
- 4279,11277, 4283,11277, 9673,11277, 9967,11277, 9875,11277, 4745,11277,
-   11,11277,11303,11349, 7971,11349,    2,11051,11315,11355,11303,11355,
-11349,11358,11350,11355,11304,11355,11307,11365,11349,11355,11303,11368,
-    5,11355,    7,11372,11276,11374,11277,11375,11377,11379,11276,11375,
-11277,11374,11383,11385,    7,11355,    5,11388,11276,11390,11277,11391,
-11393,11395,11276,11391,11277,11390,11399,11401,    5,11354,    7,11404,
-11277,11407,    7,11405,    7,11354,11087,11413,    5,11412,11277,11417,
-11307,11413,11277,11413,    4,11354,11373,11425,    7,11427,11277,11429,
-   10,11354,11087,11433,11307,11433,11277,11433,   10,11355,11349,11441,
-11277,11440,11307,11445,11277,11441,11303,11449,    4,11355,11410,11453,
-11277,11455,    7,11453,11405,11458,11277,11461,11276,11458,11277,11459,
-11405,11467,11465,11467,11276,11459,11277,11458,11473,11475,11405,11453,
-    7,11478,11277,11481,    1,11452,    1,11355,    4,11486,   67,11355,
- 1275,11355,    9,11493,11485,11495,11489,11495, 7947,11355,   11,11501,
-11277,11503,11277,11355,   10,11506,11307,11509,   10,11507,11349,11513,
-   11,11354,11326,11517,11277,11517, 7947,11520, 7947,11517,11277,11524,
-    3,11051, 8213,11529, 8052,11529, 7971,11529,  113,11534,  113,11529,
- 7971,11538, 8241,11529, 7947,11528,  483,11529,  112,11051,11326,11549,
-11277,11549, 7947,11552, 7947,11549,11277,11556,   67,11050,11187,11561,
-11053,11561,11179,11561,   66,11051,  113,11050,11556,11571,11185,11571,
-11549,11571, 7947,11576,   25,11570, 3867,11581, 7947,11571,11549,11584,
-   25,11571, 3933,11589, 7947,11051,  113,11592,11083,11595,11251,11595,
-  113,11593,11549,11601,    3,11593,11549,11605,11517,11605,    3,11592,
-   11,11051, 8116,11613, 8099,11613,11272,11613,11561,11613,11491,11613,
-11251,11613,   25,11624, 8074,11613, 8093,11629,   25,11613,11251,11632,
- 8109,11613, 8063,11636, 8063,11613, 8109,11640, 7957,11612,11277,11645,
- 6625,11613,  113,11613,    2,11613,11183,11653,11545,11653,11611,11653,
-11529,11653, 7947,11661,    3,11613, 7971,11664, 8093,11667, 7971,11665,
- 8109,11671,    2,11612,11605,11675,11326,11675,11277,11675, 7947,11680,
- 7947,11675,11277,11684, 7971,11613,    3,11688, 8093,11691,    3,11689,
- 8063,11695,   11,11050,11355,11699,  113,11701, 1369,11699,11251,11705,
-   33,11699,11251,11709,    3,11698, 8251,11713, 3807,11713,11433,11713,
-11413,11713, 9875,11713, 8165,11713,    3,11699, 8241,11727,    0,   11,
- 8095,11731, 8112,11731, 6688,11731, 6285,11731,  203,11730, 2351,11741,
- 8159,11731, 8162,11731, 8128,11731, 8114,11731, 8097,11731, 8118,11731,
- 8100,11731,    5,11730, 1369,11759, 8116,11731,    9,11762, 8099,11731,
-    9,11766,  181,11731,   98,11731, 5019,11773, 8058,11731, 8093,11777,
- 8156,11731, 8093,11781, 8076,11731, 8093,11785,   30,11731, 8124,11731,
- 8063,11790, 8072,11731, 8109,11794, 8063,11731, 8161,11798, 8124,11798,
- 8109,11798,    9,11804,    9,11798, 8109,11808,   25,11731, 6685,11812,
-    9,11812,   89,11731, 5019,11819,   21,11821,   21,11818, 5019,11825,
- 2759,11731, 2789,11731, 2821,11731, 6658,11731, 6685,11731,   25,11836,
- 4413,11731,  113,11731,    9,11842,  128,11731,  659,11731,  623,11731,
-  645,11731,  705,11731,  299,11731,  828,11731,  394,11731,  241,11731,
-  375,11862,  483,11731,  803,11866, 8074,11731, 8093,11871,    9,11873,
-    9,11870, 8093,11877,  101,11731,   21,11731,   89,11882, 5019,11885,
-   89,11883, 5045,11889, 8061,11731, 8109,11892,  803,11731,  483,11896,
-  375,11731,  241,11900,  587,11901, 6625,11731,    9,11906, 6789,11731,
-    2,11911, 6855,11913, 1369,11730,  587,11730,  375,11919, 8109,11731,
- 8061,11922, 8072,11922, 8063,11922,    9,11928,    9,11922, 8063,11932,
-  145,11731,  903,11730,  375,11939,  265,11731, 8161,11731, 8063,11944,
-    2,11730, 8124,11949, 8804,11949, 3972,11949, 8150,11949, 8495,11949,
-    9,11958, 7971,11949,    9,11962, 3933,11949,    9,11966,    9,11949,
- 8109,11970, 8495,11970, 3933,11970, 7971,11970, 8109,11949,    9,11980,
-    3,11730,  483,11985,    2,11731, 8075,11989,    9,11991,    3,11731,
- 8151,11994,    5,11995,    6,11999,    0,11998,    0,11995,    5,12004,
- 8150,11994, 8093,12009, 7971,11994, 8093,12013,    9,12015,    9,12012,
- 8093,12019, 1369,11995,   11,12023,12003,12025,12007,12025, 7971,11995,
- 8161,12031,11997,12031, 8124,12031, 8109,12031,    9,12038,    9,12031,
- 8109,12042,    9,11994, 7971,12046, 8093,12049, 7971,12047, 8109,12053,
-   89,11730, 5082,12057, 2969,12057, 5045,12057,   21,12062,   21,12057,
- 5045,12066,   88,11731, 7971,12070, 8093,12073, 7971,12071, 8109,12077,
- 8150,11731,    3,12080, 8093,12083,    3,12081, 8063,12087, 7971,11731,
- 1368,12091,  264,12090,12093,12095,    5,12090,    3,12099,    3,12098,
-12093,12103, 1369,12099,    7,12091,    2,12108,12103,12111,12095,12111,
-    2,12109,12101,12117,  265,12109,  265,12090, 1369,12091,12123,12125,
-   88,12090, 8093,12129,   88,12091, 8061,12133,    2,12091,12001,12137,
-    7,12136,12103,12141,12095,12141,    9,12137,    3,12091, 8061,12149,
- 8072,12149,12121,12149, 8063,12149,    9,12156,    9,12149, 8063,12160,
-    2,12090,12107,12165,12149,12165,    9,12169,    3,12090,    5,12173,
-    6,12175,12137,12177,12146,12173,    5,12172,12111,12183,12141,12183,
-12093,12183, 8093,12173,    9,12191,12137,12173,    9,12194,    9,12172,
- 8093,12199,    9,12173,12137,12202,    9,12090,    3,12206, 8093,12209,
-    3,12207, 8063,12213,    9,11731, 8116,12216, 8099,12216, 8074,12216,
- 8093,12223,   25,12216, 8109,12216, 8063,12228, 8063,12216, 8109,12232,
- 6625,12216,  113,12216,    3,12216, 7971,12240, 8093,12243, 7971,12241,
- 8109,12247, 7971,12216,    3,12250, 8093,12253,    3,12251, 8063,12257,
-    0,    9,  192,12261, 2329,12263,  211,12261, 2419,12267,  211,12260,
- 2433,12271,  192,12260, 2337,12275,  189,12260, 2337,12279,    4,12261,
-    7,12282,  413,12260,  413,12261, 1216,12260, 1216,12261, 1086,12261,
- 9617,12295,  137,12261,  587,12261, 1011,12300, 9617,12303, 1011,12301,
- 9565,12307, 1011,12261, 9617,12311,  587,12313,  587,12310, 9617,12317,
- 1011,12260, 5267,12321, 9600,12321, 9565,12321,  587,12326,  587,12321,
- 9565,12330,  587,12260, 5231,12335, 5181,12335,10505,12335, 1275,12261,
-    2,12260,10001,12345,    5,12347,    4,12346,12349,12351,    4,12347,
-    5,12346,12355,12357,    3,12260,11243,12361,11251,12361, 5177,12361,
- 5185,12361,    2,12261,    3,12261,11355,12373,    1,  265,  471,12376,
- 2647,12379,  357,12376, 1785,12383,  586,12377,  375,12387,  586,12376,
-  413,12377,    3,12377,    7,12394,  375,12397,    7,12395,  331,12401,
-  483,12395,   15,12405,    5,12377,   17,12409,  587,12411,    3,12376,
-  669,12415, 1418,12415,12413,12415, 1369,12415,   15,12422,   15,12415,
- 1369,12426,    5,12376,12417,12431, 1419,12431,12415,12435,  668,12431,
-12415,12439,12419,12431,12407,12431,12429,12431,    9,12431,  587,12448,
-12415,12451,12425,12431,  587,12431,    9,12456,12415,12459, 6719,12377,
-    9,12463, 7867,12377,  251,12467, 3357,12377, 3681,12377, 3709,12377,
- 2647,12377, 5843,12377, 4407,12377,11917,12377,  305,12377,  713,12377,
-   25,12377, 4405,12377, 7041,12377,  251,12493, 1471,12376, 2011,12497,
-   53,12376, 2035,12501,  257,12377,  253,12376, 5325,12507,  251,12376,
- 7867,12511, 7617,12511, 7041,12511, 7617,12377,  251,12519, 1363,12376,
- 5189,12523,  483,12377,    9,12377, 8938,12377,  375,12531, 5313,12377,
- 7035,12377, 7091,12537, 7083,12537, 7123,12537,  241,12537,   11,12376,
- 5313,12547,  587,12376,12387,12551,11731,12551,    9,12376, 5019,12557,
-12361,12557, 1369,12376,   11,12377,  587,12377,12391,12567,    7,12376,
-    2,12571,    4,12572,12537,12575,    4,12571,    2,12578,12537,12581,
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- 8861,12571,  331,12596, 4827,12571,    6,12377,  257,12603,  265,12605,
-  241,12603,    1,12609,12607,12611,    7,12377,    3,12614,  375,12617,
- 8861,12614,  375,12621,  375,12615, 8861,12625,  241,12614,  375,12629,
-  257,12376, 2647,12633, 1783,12633,  256,12377,  375,12639, 8861,12377,
-  261,12643,  260,12643,  256,12643,    6,12643,  241,12650,    7,12643,
-  241,12654,  331,12655,    6,12642,12645,12661,    7,12642,12647,12665,
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-    6,12673,12679,12681,12655,12681,    7,12673,12675,12687,  241,12377,
-    7,12691,  331,12693,    7,12690,  375,12697, 8997,12691,    7,12701,
-  241,12376, 4457,12705,  374,12705, 5189,12705,  265,12705,    6,12712,
- 8386,12705,    6,12705,  265,12718,    7,12705, 8337,12722, 8337,12705,
-    7,12726, 8861,12705,    6,12731,    7,12731,    6,12730,12735,12737,
-    7,12730,12733,12741,    1,  241,  448,12745, 4349,12747,  445,12744,
- 1679,12751,  457,12744, 4371,12755, 8461,12744, 8475,12759,  277,12744,
- 4457,12763,  923,12744, 4959,12767, 8388,12744, 8389,12744,    4,12745,
-   11,12775, 1369,12777,    2,12745, 1275,12781,    9,12783,    2,12744,
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-  587,12798,    4,12744,12789,12803,  669,12803,12787,12807, 1418,12803,
-12787,12811,12791,12803,12785,12803,12801,12803,   15,12803, 1369,12820,
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-  265,12834, 4349,12837,  923,12745, 5009,12841, 8374,12745,  346,12745,
- 2981,12847,  386,12745,  387,12745, 3049,12853,  347,12745, 8389,12745,
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-  253,12745,   59,12744, 1325,12744,  341,12745,  375,12745,12883,12929,
- 8337,12931, 8337,12928,12883,12935, 4371,12745,  457,12939,  375,12939,
- 4531,12745,  375,12945, 8366,12745,  375,12949,  305,12744, 4457,12953,
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-  265,12971, 8375,12745, 8495,12983,  305,12745,12887,12987, 4266,12987,
- 3031,12987, 4213,12987,  375,12994, 8337,12986,  375,12999,  375,12987,
- 4213,13002, 5325,12745,    7,13007, 5361,13009, 5385,13009, 5407,13009,
- 1275,12744,   15,12744, 8475,12745,  375,13021, 8461,13021,    6,12744,
- 8429,13027, 8428,13027, 4139,13027, 4138,13027,    3,13026,    5,13036,
-    5,13026,    3,13040,  264,13026,13031,13045,13035,13045,  264,13027,
- 8401,13051, 4137,13051,  265,13026, 8401,13057,13051,13058,13029,13057,
-13052,13057, 4137,13057,13051,13066,13033,13057,13054,13057,13051,13057,
- 8401,13074, 4137,13074, 4137,13027,  265,13081,13051,13083,  265,13080,
-13045,13087,  341,13027,  265,13027, 8401,13092,13045,13095, 4137,13092,
-13045,13099,13045,13093, 8401,13103, 4137,13103, 8401,13027,  265,13109,
-13051,13111,  265,13108,13045,13115,    7,12744, 8605,13119, 8374,13119,
- 8916,13119, 8389,13119,  412,13119,  241,13119,  265,13130,  264,13118,
-  264,13119, 8452,13119, 8647,13119,  265,13118,13137,13143, 8861,13119,
-  375,13146, 8337,13119,  375,13150,  265,13150,  305,13119,  713,13119,
-   25,13119,  375,13119, 8861,13162, 8337,13162,  265,13119,  241,13168,
-13135,13169, 8337,13168,    6,12745,12965,13177,13145,13177,13139,13177,
- 8453,13177,13119,13185,12923,13177,12925,13177,13135,13177,13169,13192,
-13172,13177,13136,13177,13143,13199,13175,13177,13155,13177,13169,13177,
-13135,13206,    3,13177,    5,13210,13118,13212,13119,13213,13215,13217,
-13118,13213,13119,13212,13221,13223,    5,13177,    3,13226,13118,13228,
-13119,13229,13231,13233,13118,13229,13119,13228,13237,13239,  264,13177,
-13119,13242,13143,13245,13119,13243,13135,13249,  413,13177, 8452,13177,
- 8861,13255,  305,13177, 8337,13177,  265,13260, 8861,13263,  265,13261,
- 8495,13267,  265,13177, 8337,13270, 8861,13273, 8861,13271, 8337,13277,
-13119,13177,  264,13280,13143,13283,  264,13281,13169,13287,  265,13280,
-13287,13291,  265,13281,13283,13295, 8387,13177,  264,13299,  265,13298,
-13301,13303,  264,13298,  265,13299,13307,13309,  265,13176, 8842,13313,
- 8495,13313, 8337,13316, 8337,13313, 8495,13320,    7,12745,13039,13325,
-13043,13325,13045,13325,  241,13324,    0,13333, 8717,13325, 8495,13325,
- 8337,13339,  305,13339, 4311,13325, 4329,13325, 3785,13325,10351,13325,
-10055,13325, 8337,13324, 8495,13355,  331,13355, 1325,13355,   59,13355,
-  265,13355,   59,13325, 8337,13367, 1325,13325, 8337,13371,  331,13325,
- 8337,13375, 8861,13375,  265,13325,13051,13381,13335,13381, 5325,13381,
-    1,13381,13333,13389, 8861,13381, 8337,13381,13027,13325,  264,13396,
-  264,13397,  265,13396,13401,13403,  265,13397,13399,13407,  265,13324,
- 8717,13411, 3785,13411,13045,13411, 8495,13411,  374,12745, 8842,13421,
- 8495,13421, 8337,13424, 8337,13421, 8495,13428,  340,12745, 8717,13433,
-13045,13433, 3785,13433, 8495,13433,  375,12744, 4371,13443,13428,13443,
-12983,13443, 8475,13443,13421,13443, 8337,13452,  305,13442, 4067,13457,
- 8337,13443,13421,13460,  305,13443, 4213,13465, 8452,12745, 8647,13469,
-    7,13469, 8495,13473, 8337,12745,  375,13476,12883,13479,  375,13477,
-  305,13483,13421,13483,  305,13476,  375,13489,    6,13477, 8453,13493,
- 8452,13492,13495,13497, 8452,13493, 8453,13492,13501,13503,    7,13477,
-13213,13507,13229,13507,  375,13507,13243,13507,  265,13507,13177,13517,
-    6,13476,    3,13521,    5,13522,13507,13525,    5,13521,    3,13528,
-13507,13531,13517,13521,  264,13521,13507,13537,    7,13476, 8495,13541,
-  331,13541, 1325,13541,   59,13541,  265,13541,  265,13476, 8647,13553,
-    7,13553, 8495,13557,  265,13477,13177,13561,13521,13561,    7,13561,
-  265,12745,  445,13568, 4349,13571,  445,13569, 4371,13575, 8770,13569,
- 8729,13569,13027,13569,  375,13583, 8684,13569, 8717,13587,  331,13569,
-13177,13591, 8757,13569, 8647,13594, 8647,13569, 8757,13598, 8387,13568,
- 8495,13603,    6,13569,    7,13569, 8647,13609, 8495,13608, 8717,13613,
- 8495,13609, 8757,13617,    6,13568, 8842,13621, 8495,13621, 8337,13624,
-13609,13621, 8337,13621, 8495,13630,    7,13568, 8717,13635, 3785,13635,
-13045,13635, 8495,13635,13607,13635, 8337,13568, 8647,13647,    7,13647,
- 8495,13651, 8495,13569,    6,13654,    7,13654, 8717,13659,    6,13655,
-13659,13663,    7,13655,13657,13667, 8647,13667,  265,12744,13258,13673,
-12845,13673,13091,13673,12935,13673,12927,13673,12929,13673, 8337,13685,
-13479,13673,12911,13673,13260,13673,12859,13673, 4457,13673, 5189,13673,
-13177,13673,  305,13700, 8337,13700,  305,13673,13177,13706, 8386,13673,
-    7,13673, 8337,13712, 8861,13673,    6,13717,    7,13717,    6,13716,
-13721,13723,    7,13716,13719,13727, 8337,13673,13177,13730,    7,13730,
-    1,  587,  264,13737,  375,13739,   16,13737,  264,13736,  341,13745,
-    7,13737,    4,13748,    4,13749,    3,13736,  717,13755,  341,13755,
-    6,13755,  713,13761,   17,13755,  566,13736, 1108,13737, 9565,13769,
-11731,13737,  265,13772,11942,13737, 3565,13737, 3573,13737, 3273,13737,
-  375,13736,  113,13736, 4696,13787,    9,13787, 4669,13790, 4669,13787,
-    9,13794, 1011,13737, 9565,13799,    9,13801,    9,13798, 9565,13805,
-  241,13737,    9,13737, 1011,13810, 9565,13813, 1011,13811, 9617,13817,
-  113,13737, 4727,13821,    9,13823, 7049,13737,  807,13827,  375,13827,
-  265,13736,11731,13833, 1487,13737, 1011,13736, 5293,13839, 9704,13839,
- 9617,13839,    9,13844,    9,13839, 9617,13848,  265,13737,11731,13852,
-    4,13736,13757,13857,13762,13857,13761,13857,  713,13862,13759,13857,
-  340,13857,13745,13869,13747,13857,13740,13857,  375,13857,13739,13876,
-    7,13857,  265,13880,13745,13883,  265,13881,13739,13887,13739,13857,
-  375,13890,  713,13857,13761,13894,  265,13857,    7,13898,13745,13901,
-  483,13857,    5,13736,13853,13907,  375,13909,  483,13906,    4,13737,
-    7,13914,  767,13915,13761,13919,    5,13737,    3,13923,    1,13924,
-    1,13923,    3,13928,   17,13923,  587,13933,13927,13935,13931,13935,
-  567,13736,  483,13736,    5,13942,    1,  483, 9174,13946, 9175,13946,
-    2,13947,    7,13952,    2,13946,    7,13957,    6,13946, 9170,13947,
- 9175,13947,13949,13965,  824,13946, 3997,13969,  802,13946,13963,13973,
-  766,13946,  825,13946, 9174,13947,13951,13981,  803,13947,13973,13985,
- 9165,13987, 9165,13984,13973,13991,  713,13946,  803,13994, 3997,13997,
- 3997,13995,  803,14001, 1171,13946, 4663,14005,  903,14007,  155,13946,
- 9172,13947, 9171,13947,  713,13947,13979,14017, 4200,14017, 3027,14017,
- 4147,14017,  803,14024,  803,14017, 4147,14028, 1171,13947, 4722,14033,
-  903,14033, 4713,14036, 4713,14033,  903,14040,  257,13947,    9,14045,
-    9,13946,  257,14049,  903,13946,  257,14053,   11,13946, 5197,14057,
- 5125,14057,12335,14057,    4,13946,    2,14065,    7,14067,14013,14069,
-    5,13946,13958,14072,13959,14073,14075,14077,13958,14073,13959,14072,
-14081,14083,  586,14072,  586,14073,  587,14072,14089,14091, 4827,14073,
-    9,14073, 4569,14073, 4745,14073,  587,14073,14087,14103,    4,13947,
-14093,14107,14087,14107,14103,14110,14104,14107,14088,14107,14091,14117,
-14103,14107,14087,14120,    3,14107,    7,14124,14072,14126,14073,14127,
-14129,14131,14072,14127,14073,14126,14135,14137,    7,14107,    3,14140,
-14072,14142,14073,14143,14145,14147,14072,14143,14073,14142,14151,14153,
-    3,14106,    7,14157,    2,14106,14125,14161,    7,14163,14073,14165,
-  586,14107,14073,14168,14091,14171,14073,14169,14087,14175,    2,14107,
-14158,14179,14073,14181,    7,14179,14157,14184,14073,14187,14073,14185,
-14157,14191,14157,14179,    7,14194,14073,14197,14073,14107,  586,14200,
-14091,14203,  586,14201,14103,14207,    5,13947,14069,14211, 9165,14213,
-    6,14211, 9165,14210,14069,14219,   17,14211,  802,13947, 9165,14225,
-  803,13946,14226,14229,14015,14229,14225,14229, 9165,14234,  713,14228,
- 3997,14239, 9165,14229,14225,14242,  713,14229, 4147,14247, 9165,13947,
-  803,14250,13973,14253,  803,14251,14225,14257,    4,14251,    2,14261,
-    7,14263,    5,14250,14265,14267,14069,14267,  587,13947, 9340,14273,
- 9323,14273, 9290,14273, 9317,14279, 9335,14273, 9287,14282, 9287,14273,
- 9335,14286,    5,14273, 9195,14290, 9317,14293, 9195,14291, 9335,14297,
- 9195,14273,    5,14300, 9317,14303,    5,14301, 9287,14307,  587,13946,
-    5,14310,    0,  265,  446,14315, 4371,14317,  445,14314, 1675,14321,
- 8725,14315, 8766,14315,  471,14314, 2367,14329, 8827,14315, 8836,14315,
-  319,14314, 4497,14337, 1302,14315,  667,14315, 8794,14315, 8768,14315,
- 8727,14315, 8774,14315, 8732,14315, 1011,14315, 1275,14354,    3,14315,
- 1369,14359,   11,14361,    5,14315,    9,14365, 1275,14367,    3,14314,
- 1291,14371,  524,14371,14369,14371,  483,14371,   11,14378,   11,14371,
-  483,14382,    5,14314,  525,14387,14371,14389,14373,14387,14375,14387,
- 1290,14387,14371,14397,14363,14387,14385,14387,14381,14387,   17,14387,
- 1275,14406,14371,14409, 1275,14387,   17,14412,14371,14415, 8770,14315,
-  241,14418, 8729,14315,  241,14422,  445,14315,  241,14426, 4371,14429,
- 1303,14315,  666,14315, 8784,14315, 4266,14315, 8622,14315, 8717,14441,
- 8824,14315, 8717,14445, 8702,14315, 8717,14449,  256,14314, 7185,14453,
- 2309,14453, 5673,14453, 5521,14453,  375,14461, 4213,14315,  375,14464,
-  316,14315, 4533,14469, 1757,14469, 8697,14315,  629,14315,  407,14315,
- 5325,14479, 3121,14315, 3031,14315, 5519,14315, 3355,14315,  510,14315,
- 8788,14315, 8647,14492, 8676,14315, 8757,14496, 8647,14315, 8831,14500,
- 8788,14500, 8757,14500,  241,14506,  241,14500, 8757,14510,  331,14315,
- 1325,14315,   59,14315, 5521,14315,  375,14521,  375,14315, 4213,14524,
- 8757,14524,   53,14525, 1471,14525,  253,14525,  253,14314, 4425,14537,
- 4497,14537,  483,14315,    9,14542,    9,14315,  483,14546, 8684,14315,
- 8717,14551,  241,14553,  241,14550, 8717,14557,  331,14551,  251,14315,
-  257,14563, 8495,14565, 8635,14315, 8757,14568, 5515,14315,  331,14573,
- 8757,14315, 8635,14576, 8676,14576, 8647,14576,  241,14582,  375,14576,
-  241,14576, 8647,14588, 1369,14314, 2853,14593,   15,14315, 1275,14315,
- 1011,14598,  587,14315,  241,14602, 8831,14315, 8647,14606,    6,14314,
-14341,14611,14343,14611,14601,14611,14357,14611, 8495,14611,  241,14611,
-    7,14314,14433,14625,14435,14625,14605,14625, 8495,14625, 3785,14625,
-10055,14625,10351,14625, 4329,14625, 4311,14625, 4555,14625,14073,14625,
- 4971,14625, 8717,14625,    7,14315, 8813,14652,14623,14653, 8495,14657,
-    4,14653,    2,14660,14620,14663, 8495,14663,14611,14666,14611,14663,
- 8495,14670,    2,14653,    4,14674,14620,14677, 8495,14677,14611,14680,
-14611,14677, 8495,14684,  240,14653,14620,14689, 8495,14689,14611,14692,
-14611,14689, 8495,14696, 8812,14652, 8717,14701, 8495,14652, 8717,14705,
-  241,14707,  241,14704, 8717,14711,  331,14705,   15,14653,  483,14717,
- 1275,14653,    9,14721, 8495,14653, 8831,14725,14655,14725, 8788,14725,
- 8757,14725,  241,14732,  241,14725, 8757,14736,  375,14653, 8647,14653,
-  241,14652, 8647,14745, 8495,14744, 8717,14749, 8495,14745, 8757,14753,
-  257,14314, 8614,14757, 4417,14757, 8495,14757,  251,14762,  251,14757,
- 8495,14766,  256,14315, 8647,14771, 7207,14771, 5432,14771, 5325,14771,
-  375,14778, 8495,14770, 8717,14783,  375,14771, 5325,14786, 8495,14771,
- 8757,14791, 8812,14315,    6,14794,    7,14794, 8717,14799,    6,14795,
-14799,14803,    7,14795,14797,14807, 8647,14807, 8495,14315,  261,14812,
-  260,14812,  256,14812, 8717,14819,  256,14813, 8635,14823,    6,14813,
-14815,14827,    7,14813,14817,14831, 8635,14831, 8676,14831, 8647,14831,
-  241,14838,  375,14831,  241,14831, 8647,14844,    6,14812,  241,14848,
-14831,14851,    7,14812, 8717,14855,  241,14857,  241,14854, 8717,14861,
-  331,14855,  241,14812,    6,14866,14831,14869,    7,14866, 8717,14873,
-    6,14867,14873,14877,14855,14877,    7,14867,14869,14883, 8647,14883,
-  241,14315,  445,14888, 4371,14891,  445,14889, 4349,14895, 8770,14888,
- 8729,14888,  587,14888,14625,14903, 8684,14888, 8717,14907, 8757,14888,
- 8647,14910, 8387,14889, 8495,14915, 8647,14888, 8757,14918,    6,14889,
- 8842,14923, 8495,14923, 8337,14926, 8337,14923, 8495,14930,    7,14889,
- 8717,14935, 3785,14935, 8495,14935,    6,14888,14935,14943,    7,14888,
- 8647,14947, 8495,14946, 8717,14951,14923,14947, 8495,14947, 8757,14957,
- 8495,14888,    6,14960,    7,14960, 8717,14965,    6,14961,14965,14969,
-    7,14961,14963,14973, 8647,14973, 8337,14889, 8647,14979,    7,14979,
- 8495,14983,12745,14315,  375,14987,  241,14314, 9099,14991, 9036,14991,
- 8647,14991, 8997,14996, 5521,14991,  375,15001,  375,14991, 9082,14991,
- 8495,15007,    7,14991, 8495,15011, 8997,15013, 8997,15010, 8495,15017,
- 8997,14991, 8647,15020,    7,15020, 8495,15025,    0,  241,  460,15029,
- 2315,15031,  479,15029, 2393,15035,  479,15028, 2397,15039,  460,15028,
- 2317,15043,  457,15028, 2317,15047,  269,15028, 2885,15051,  464,15029,
-   16,15029,  413,15029,    6,15058,    4,15029,    7,15062,    7,15063,
-   15,15063,  483,15069,    2,15029,  587,15073,   17,15075,    2,15028,
-  525,15079, 1290,15079,15071,15079, 1275,15079,   17,15086,   17,15079,
- 1275,15090,    4,15028, 1291,15095,15079,15097,15081,15095,15083,15095,
-  524,15095,15079,15105,15077,15095,15093,15095,15089,15095,   11,15095,
-  483,15114,15079,15117,  483,15095,   11,15120,15079,15123, 9072,15029,
-  305,15127, 9105,15029,  305,15131, 9083,15029,  413,15135,  412,15134,
-15137,15139,  412,15135,  413,15134,15143,15145, 3445,15029,  375,15149,
-12526,15029,12528,15029,  251,15029,  375,15029,  305,15159, 8997,15161,
- 8997,15158,  305,15165,12614,15029,  375,15169, 7065,15029,  265,15173,
- 7259,15175,  305,15028, 9105,15179, 9072,15179,  375,15179, 8997,15184,
- 8997,15179,  375,15188, 9082,15029,  375,15193,  265,15193, 5521,15029,
-  375,15199,  265,15199,  483,15029,12377,15204,    9,15029,12377,15208,
-   17,15029,13737,15029,  375,15215,    6,15028,    3,15219,    5,15220,
-15193,15223,    5,15219,    3,15226,15193,15229,15197,15219,15057,15219,
-    3,15235,    2,15234,15237,15239,    2,15235,    3,15234,15243,15245,
-15065,15219,    3,15249,    2,15248,15251,15253,    2,15249,    3,15248,
-15257,15259,  264,15219,15193,15263, 8997,15219,    7,15028, 4437,15269,
-15213,15269,    3,15273,    2,15272,15275,15277,    2,15273,    3,15272,
-15281,15283,12571,15269, 4805,15269, 4613,15269,14073,15269,  375,15269,
-  510,15269, 4971,15269,  483,15269,    9,15300,    9,15269,  483,15304,
-    6,15029, 9020,15309, 9021,15309,12393,15309,12392,15309, 8337,15309,
-  265,15318, 8452,15308,  241,15322, 8453,15309,15325,15327, 8452,15309,
- 8453,15308,  412,15309, 8997,15335,  241,15308,  265,15338,15327,15341,
- 8452,15339,15333,15345,15067,15309,    3,15349,    2,15348,15351,15353,
-    2,15349,    3,15348,15357,15359,  413,15308,15313,15363,15315,15363,
-15331,15363,15321,15363, 8997,15363,15335,15372,15336,15363,15335,15363,
- 8997,15378,  412,15308,15311,15383,15317,15383,15327,15383,  413,15309,
-12377,15390,15383,15393, 8997,15390,15383,15397,15383,15391, 8997,15401,
-12377,15309,  413,15404,15383,15407,  413,15405,15335,15411, 8997,15309,
-  413,15414,15383,15417,  413,15415,15335,15421,  265,15309, 8337,15424,
-15363,15427,  265,15308,  241,15430,15327,15433,    7,15029,15223,15437,
- 8997,15439,15229,15437, 8997,15443,15263,15437, 8997,15447,    4,15436,
-15219,15451,    3,15453,    2,15452,15455,15457,    2,15453,    3,15452,
-15461,15463,  264,15436,  264,15437,12377,15436,  375,15471, 8997,15436,
-15223,15475,15229,15475,  375,15475,15263,15475,  265,15475,15219,15485,
-   59,15437, 1325,15437,  331,15437, 1275,15437,    9,15495,   15,15437,
-  483,15499,  265,15437,15266,15503,15219,15503, 8997,15506,15467,15503,
- 8997,15503,15219,15512,  305,15503,  265,15436,15469,15519,  331,15519,
-  375,15028, 3307,15525, 2885,15525,12511,15525,12377,15525,  251,15533,
-  340,15029,  331,15537, 9136,15029,    7,15541, 8997,15029,  375,15544,
-  305,15547,  305,15545,  375,15551,    6,15545,    3,15555,    5,15556,
-    5,15555,    3,15560,  264,15555,    7,15545, 8495,15567,  331,15567,
- 1325,15567,   59,15567,  265,15567,    7,15544,15559,15579,15563,15579,
-15223,15579,15229,15579,  375,15579,15263,15579,15565,15579,  265,15579,
-15219,15595,15555,15595,  265,15544,15555,15601,    7,15601,  265,15545,
- 8647,15607,    7,15607, 8495,15611,  265,15029,    7,15615,  375,15617,
-    7,15614,  331,15621, 8997,15614,    7,15625,12377,15029,13421,15629,
-13313,15629,13621,15629,14923,15629,12721,15629,12715,15629,12709,15629,
-  375,15629,12705,15645,    7,15629,  331,15649,  483,15628,    9,15628,
-    7,15628,  375,15657,  265,15028, 9036,15661, 9099,15661,  241,15661,
-    6,15667,15629,15669, 8647,15661, 8997,15672, 5521,15661,  375,15677,
- 9082,15661, 8495,15681,  375,15661,    7,15661, 8495,15687, 8997,15689,
- 8997,15686, 8495,15693, 8997,15661, 8647,15696,    7,15696, 8495,15701,
-    0,  587, 9319,15705, 9336,15705,  889,15704, 2373,15711, 9371,15705,
- 9374,15705, 9350,15705, 9338,15705, 9321,15705, 9342,15705, 9324,15705,
-  578,15705,    3,15705,    6,15730,    7,15705,  567,15735, 9195,15737,
-    4,15735, 9366,15741,  483,15741, 9195,15744, 9195,15741,  483,15748,
-    7,15704, 9340,15705,  483,15754, 9323,15705,  483,15758,  579,15705,
- 9272,15705, 9317,15765, 9368,15705, 9317,15769, 9294,15705, 9317,15773,
-  566,15704,15729,15777, 9348,15705, 9287,15780, 9288,15705, 9335,15784,
- 9287,15705, 9373,15788, 9348,15788, 9335,15788,  483,15794,  483,15788,
- 9335,15798,  567,15705,    9,15802,15777,15805,15777,15803,    9,15809,
-12377,15705,   11,15813,    9,15705,  567,15816,15777,15819,  567,15817,
- 9290,15705, 9317,15825,  483,15827,  483,15824, 9317,15831, 9275,15705,
- 9335,15834,  375,15705,   11,15839,   11,15704,  375,15843, 9335,15705,
- 9275,15846, 9288,15846, 9287,15846,  483,15852,  483,15846, 9287,15856,
-    9,15704, 5231,15861, 5181,15861,10505,15861,14057,15861, 1011,15704,
-  375,15871, 9373,15705, 9287,15874,    4,15704, 9262,15879,  375,15879,
- 9195,15882,    7,15879,  265,15887, 9195,15889, 9195,15879,  375,15892,
-  483,15879,    5,15704,    5,15705, 9367,15900, 9366,15900, 9317,15905,
- 9195,15900, 9317,15909,  483,15911,  483,15908, 9317,15915, 9195,15901,
- 9373,15919,15903,15919, 9348,15919, 9335,15919,  483,15926,  483,15919,
- 9335,15930,  483,15900, 9195,15934, 9317,15937, 9195,15935, 9335,15941,
-  567,15704,15763,15945,    9,15945,  566,15705,15823,15951,15948,15951,
-15945,15951,    9,15956, 9195,15950, 9317,15961, 9195,15951, 9335,15965,
-    9,15951,15945,15968, 9366,15705,    5,15972, 9317,15975,    5,15973,
- 9287,15979, 9195,15705,  566,15982, 9317,15985,  566,15983, 9275,15989,
-    5,15983, 9275,15993, 9288,15993, 9287,15993,  483,15998,  483,15993,
- 9287,16002,    5,15982, 9317,16007,  483,16009,  483,16006, 9317,16013,
-  483,15982,    5,16016, 9317,16019,    5,16017, 9287,16023,  483,15705,
- 9340,16026, 9323,16026, 9290,16026, 9317,16033, 9335,16026, 9287,16036,
- 9287,16026, 9335,16040,    5,16026, 9195,16044, 9317,16047, 9195,16045,
- 9335,16051, 9195,16026,    5,16054, 9317,16057,    5,16055, 9287,16061,
-    0,  483,  878,16065, 2327,16067,  899,16065, 2415,16071,  899,16064,
- 2423,16075,  878,16064, 2331,16079,  875,16064, 2331,16083,  573,16064,
- 2569,16087,    2,16064,   15,16091,  413,16064,  413,16065,  573,16065,
- 2567,16099, 1216,16064, 1216,16065,  904,16065, 2263,16107, 6515,16065,
-    5,16111, 6539,16113,  903,16064, 4421,16117, 5285,16117, 2265,16117,
-    4,16064,    5,16064,    4,16065,    2,16129,    7,16131,    0,16130,
-    0,16129,    2,16136,   15,16129,  483,16141,16135,16143,16139,16143,
- 9513,16065,    5,16149,16133,16151,    4,16148,    2,16155,    7,16157,
-16151,16159,    1, 1011,  996,16162,   14,16162,    5,16163,    6,16169,
- 9617,16171,    2,16162, 9617,16175,16171,16176,16172,16175,16171,16175,
- 9617,16182,    7,16175,16169,16187, 9617,16189,    5,16162,16186,16193,
-16175,16193,    7,16196,    7,16197,16187,16193,    6,16192,16195,16205,
-16199,16205,    7,16192,16203,16211,16175,16211,    3,16211,16162,16217,
-    3,16193,    7,16221,16162,16222,16162,16221,    7,16226,    7,16227,
-16205,16231,    6,16193,16201,16235,16214,16235,16175,16235,16211,16240,
-16211,16235,16175,16244,16225,16235,16229,16235,16219,16235,    7,16193,
-16175,16254,16205,16257,16205,16255,16175,16261, 9704,16163,  587,16265,
- 5293,16163,  587,16269,  997,16162,  972,16162,16235,16275,    9,16275,
-14652,16163,  973,16163,16273,16283,16278,16283,    9,16283,16275,16288,
-16275,16283,    9,16292,  955,16162, 5241,16297, 1505,16162,    6,16301,
-    7,16300,16303,16305,    7,16301,    6,16300,16309,16311,   67,16162,
-16235,16315,    9,16163, 9617,16318,  587,16321,  587,16319, 9617,16325,
-   15,16162,  257,16163,    9,16331,    9,16162,  973,16335,16275,16337,
-  973,16334,  257,16335,  587,16162, 5293,16345, 9704,16345, 9617,16345,
-    9,16350,    9,16345, 9617,16354,    6,16162,    5,16358,    7,16162,
-16221,16362,16235,16365,16235,16363, 8647,16363,  903,16362,16235,16373,
-    6,16163,16329,16377,    7,16163,16167,16381,16205,16381,16361,16381,
- 8717,16381,14315,16380, 4311,16381, 4329,16381, 3785,16381,10351,16381,
-10055,16381,  973,16162,    9,16402,  972,16163,16341,16407,16165,16407,
-16405,16407,16403,16407,    9,16415, 9617,16163, 1368,16418,   14,16418,
-    2,16418,    7,16425,16423,16427,    7,16424,    5,16418,    6,16433,
-16431,16435,16421,16435,    6,16432,16427,16441,    2,16419,16435,16445,
-16171,16445,    7,16445,16433,16451,    9,16418,  587,16455,  587,16419,
-    9,16459,    6,16418,    5,16462,16427,16465,    7,16418,    2,16468,
-16435,16471,14315,16163,    7,16474,   17,16475,  903,16162,    3,16480,
-    6,16483,    6,16482, 5241,16481, 1274,16480,   15,16480, 1275,16480,
-    6,16480,    3,16496,    5,16496,    7,16480,16485,16503,16235,16503,
-    6,16481,16495,16509,16493,16509,    7,16481,16499,16515,16501,16515,
-16487,16515,16205,16515,16361,16515,16491,16515,16167,16515,    1,  903,
- 9542,16530, 9543,16530, 1274,16530,    3,16530, 9541,16539,    6,16538,
-    7,16538,    5,16545,16530,16547,    5,16539,    7,16551,16530,16552,
-16530,16551,    7,16556,    7,16557,16543,16561,    6,16539, 9533,16565,
-16545,16565,16555,16565,16559,16565,16549,16565,    7,16539,16543,16577,
-    4,16530,16576,16581,16543,16583,16539,16581,    7,16586,16543,16589,
-    7,16587,16565,16593,16545,16581,16565,16596,16565,16581,16545,16600,
-16568,16581,16579,16581,    7,16581,16539,16608,16543,16611,16539,16609,
-16545,16615, 1170,16530,16565,16619, 9541,16531,16535,16623,  559,16530,
- 5241,16627,  767,16530,16565,16631,  165,16530,    6,16635,    7,16634,
-16637,16639,    7,16635,    6,16634,16643,16645, 9540,16531,16543,16649,
-16533,16649,16539,16649,16537,16649, 1275,16530,16623,16659, 9533,16659,
-  257,16531,  483,16665,  483,16530,  257,16669,   15,16530, 5241,16673,
-    6,16530,    3,16676,16649,16679,    7,16530,16541,16683,16566,16683,
-16551,16682,16565,16689,16565,16683, 9533,16692,  375,16683, 1011,16682,
-16565,16699, 9533,16683,16565,16702,15269,16683, 4827,16683,    6,16531,
-16662,16711,16659,16711, 9533,16714, 9533,16711,16659,16718,    7,16531,
-16539,16723, 9533,16725,16537,16723, 9533,16729, 1007,16723,16543,16723,
- 9533,16735,16679,16723, 9533,16739,  331,16723, 1325,16723,   59,16723,
- 9533,16722,16543,16749,16539,16749,16679,16749,16537,16749, 9533,16531,
- 1275,16759,16711,16761,    7,16759,16565,16765,    7,16758,16539,16769,
-16543,16769,16679,16769,16537,16769,15029,16531,    7,16779, 1011,16530,
-    5,16782,    6,16785,    6,16784, 5241,16783,   14,16782, 1275,16782,
-   15,16782,    6,16782,    5,16798,    3,16798,    7,16782,16787,16805,
-16565,16805,    6,16783,16797,16811,16795,16811,    7,16783,16801,16817,
-16803,16817,16789,16817,16543,16817,16679,16817,16793,16817,16537,16817,
-    1, 1369, 1010,16833,   16,16833,    2,16833,    5,16838,    5,16839,
-16837,16843,    7,16833,    4,16846,16843,16849,    4,16847,16841,16853,
-16835,16853,    2,16832,   11,16859,15900,16833,  331,16832,   59,16832,
- 6717,16833,    9,16869, 1325,16832,  265,16832,    4,16833,    7,16876,
-16843,16879,    2,16877,    1,16882,    1,16877,    2,16886,   11,16877,
- 1369,16891,16885,16893,16889,16893,    5,16833,    2,16898,16853,16901,
-15705,16898, 1275,16898,    9,16907, 1346,16833,    9,16911,15705,16833,
-   11,16915,    5,16914, 1275,16833,    5,16921,   17,16923,    5,16920,
-    9,16927, 1275,16832, 6717,16931,    9,16933,    1, 1275, 5814,16937,
-  902,16937,  902,16936,    3,16937,    7,16944,  413,16937, 1216,16937,
- 6787,16937,    5,16953,    4,16952,16955,16957,    4,16953,    5,16952,
-16961,16963, 1505,16937, 5771,16937,  903,16968, 1011,16937,  903,16972,
-  903,16936,16941,16977,  241,16936,   17,16936, 5299,16983, 4915,16983,
-   11,16936,  903,16937, 5771,16990,16943,16991, 1011,16990,15208,16937,
-    9,16937,15029,17000,15029,16937,    9,17004,    4,16936,  265,17009,
-    5,16936,    4,16937, 1011,17015, 1369,16936, 6717,17019,    9,17021,
-    1,   17,    4,17025,    6,17026,  113,17025, 1275,17024, 5299,17033,
- 4915,17033,  241,17025,    2,17024,    3,17024,11731,17025,  265,17045,
-    1,   15, 5886,17049,    5,17048,  483,17053,  413,17049, 1216,17049,
-  165,17049, 5843,17049, 1011,17062,14315,17049,   17,17067,  903,17049,
- 1011,17070, 1011,17048,  241,17048,  903,17048, 5241,17079, 1011,17049,
- 5843,17082,  903,17082,15204,17049,  483,17049,15029,17090,15029,17049,
-  483,17094,    3,17048,  483,17099,    2,17049,    3,17049,    5,17105,
-    1,17106,    1,17105,    5,17110,  483,17105,   15,17115,17109,17117,
-17113,17117, 1369,17105,    0, 1011,    2,17125,    7,17127, 9565,17129,
-    5,17124, 9565,17133,17129,17134,17130,17133,17129,17133, 9565,17140,
-    6,17133,17127,17145, 9565,17147, 9600,17125,    9,17151, 5267,17125,
-    9,17155,16722,17125,10385,17125,    9,17161,  587,17125, 9565,17164,
-    9,17167,    9,17165, 9565,17171, 1275,17125,  903,17175,    9,17125,
-  375,17125,  587,17181,    9,17124, 5267,17185, 9600,17185, 9565,17185,
-  587,17190,  587,17185, 9565,17194,  587,17124,  375,17199,13737,17125,
-    9,17203,    6,17124,17176,17207,17175,17207,  903,17210,  903,17207,
-17175,17214,    7,17124,10001,17219,  903,17221,    6,17125,    3,17224,
-17219,17227,  903,17229,    7,17125,   88,17233,   89,17233,  265,17233,
-  264,17232,17239,17241,  264,17233,    3,17233,    9,17246,    3,17232,
-17237,17251,    9,17251,    2,17232,17235,17257,17249,17257,17247,17257,
-    9,17263,  265,17232,17245,17267,    2,17233,17254,17271,    9,17271,
-17251,17274,17251,17271,    9,17278,16531,17232,    9,17233,    3,17284,
-17257,17287,    3,17285,17271,17291,  903,17233, 9565,17125, 1368,17297,
-   14,17297,    2,17296,    7,17303,    2,17297,    7,17306,    7,17307,
-17301,17311,    5,17297,17305,17315,17129,17315,    6,17314,17311,17321,
-    6,17315,17309,17325,17303,17325,17299,17325,  587,17296,    9,17333,
-    9,17297,  587,17337,    6,17297,    5,17340,17311,17343,    7,17297,
-    2,17346,17325,17349,12377,17125,    9,17353,16531,17125,    6,17357,
-    7,17357,    6,17356,17361,17363,    7,17356,17359,17367,    0,  903,
-  767,17370, 4617,17373,  483,17375,   15,17371, 1011,17379,  767,17371,
- 4588,17383,  483,17383, 4579,17386, 4579,17383,  483,17390,  375,17371,
-   11,17395,  483,17370, 2265,17399, 4421,17399, 5285,17399,   11,17370,
-  375,17407,    6,17370,17380,17411,17379,17411, 1011,17414, 1011,17411,
-17379,17418,    7,17370, 3549,17423, 2001,17423, 8495,17423,10291,17423,
- 1011,17431,14073,17423,11277,17423, 4971,17423, 5045,17423,    6,17371,
-    5,17442,17423,17445, 1011,17447,    7,17371, 1011,17451,    0, 1369,
- 2789,17455, 2821,17455, 2759,17455, 2687,17455, 6658,17455,    2,17455,
-    6,17466, 6625,17455,    9,17470,12551,17455, 1347,17455,13808,17455,
- 6685,17455,13833,17455, 4413,17455,17025,17455,  265,17487,  241,17486,
-17038,17455,  903,17455,    9,17455, 6625,17496,   17,17454,12377,17501,
-   11,17454,12377,17505,  803,17455,   15,17454, 5303,17511, 4927,17511,
-17033,17511,16983,17511,  265,17454, 2853,17521,17082,17455,   11,17455,
-12377,17526,12564,17455,  241,17455,13737,17532,17025,17532, 1011,17455,
-17049,17538,12377,17455,   10,17543,   10,17542,  305,17543,   11,17543,
-17547,17551,   11,17542,17545,17555,17049,17455, 1011,17558,    4,17454,
-    5,17455,13737,17455,  241,17566,    0, 1275,    3,17570,    9,17573,
-    4,17570,    5,17570, 9856,17579, 9805,17579,    9,17582,    9,17579,
- 9805,17586,    5,17571,    3,17591,    0,17592,    0,17591,    3,17596,
-    9,17591, 1275,17601,17595,17603,17599,17603,   17,17591, 9805,17609,
- 1369,17590,   17,17613, 1486,17571,   17,17617, 1369,17571,17577,17621,
-    9,17623,    5,17621,    9,17627,    5,17620,   17,17631,    0,   17,
-    4,17634,  587,17637,  155,17635, 1011,17635, 1369,17634,12377,17645,
-16990,17635,  587,17635,12377,17650,12566,17635,  903,17635,16937,17656,
-12377,17635,  587,17660,16937,17635,  903,17664,    3,17634,  483,17669,
-    2,17635,    4,17673,    0,17674,    0,17673,    4,17678,  587,17673,
-   17,17683,17677,17685,17681,17685,    3,17635, 1369,17691,    0,   15,
-    5,17695,    7,17696, 1369,17694, 5303,17701, 4927,17701,16983,17701,
-17033,17701,    3,17694,    3,17695,10104,17712,10105,17713,17715,17717,
-10104,17713,10105,17712,17721,17723,    1,   13,  113,17727,    0,   12,
-17727,17731,    9,17732,    2,17735,    2,17734,  137,17732,  136,17732,
-    2,17733,17741,17745,    3,17733,17739,17749,17743,17749,    2,17732,
-    9,17754,17749,17757,17749,17755,    3,17732,17737,17763,17745,17763,
-    0,   13,    1,   12, 1369,17771,   33,17771,    3,17770, 8251,17777,
- 3807,17777, 9875,17777, 8165,17777,    3,17771, 8241,17787,17769,17771,
-    9,17791,    2,17792,    2,17793,  137,17791,  136,17791,    2,17791,
-    9,17802,    3,17791,17797,17807,    2,17790,17807,17811,17799,17811,
-    3,17790,17805,17817,17795,17817,17803,17817,17801,17817,    1,  413,
-    4,17826,    2,17826,    5,17826,    6,17833,    6,17832,    3,17826,
-    6,17839,    6,17838, 2653,17827, 1637,17827,14537,17827,14321,17827,
-  260,17826, 2903,17827, 1639,17827, 1641,17827, 3361,17827,  331,17826,
-17521,17827, 4909,17827,14593,17827,  261,17826,  257,17826,   14,17826,
- 1274,17826, 2159,17827, 2161,17827,  251,17827, 2647,17827,  331,17885,
-   15,17826, 1275,17826,14652,17827,    6,17827,17829,17895,17831,17895,
- 8997,17895,17863,17895,17871,17895,17889,17895,17891,17895,    7,17827,
-17833,17911,17839,17911, 8495,17911,  413,17910,    0,17919,17837,17911,
-17843,17911,  265,17911,17921,17927,    1,17927,17919,17931, 2647,17927,
- 8717,17911, 3785,17911,17853,17911,17875,17911,17877,17911,14315,17910,
-  261,17911,    7,17826,17835,17951,17841,17951, 8647,17951,  251,17951,
-    6,17826,    5,17960,17911,17963,    3,17960,17911,17967,15029,17827,
-  265,17971,17895,17973,    7,17971,14315,17827,    6,17978,    7,17978,
-    6,17979,17983,17985,    7,17979,17981,17989,    0,  412, 9036,17993,
- 9099,17993,17829,17993,17895,17998,17831,17993,17895,18002,17896,17993,
-17898,17993,17913,17993,17915,17993,  446,17993, 4371,18015, 4379,17993,
-17900,17993,17917,17993, 4360,17993, 3429,17993,17882,17993, 7039,17993,
-17958,17993,17949,17993,  241,17993,  445,18036, 4371,18039,  445,18037,
- 4349,18043,16097,17993,12289,17993, 8647,17993, 8997,18050, 4349,17993,
-  251,18054,17951,17993,  251,18058,  251,17993, 4349,18062,17827,18062,
-17951,18062,17895,17993,17829,18070,17831,18070, 8997,18070, 5521,17993,
-  375,18079,  445,17993,  241,18082, 4371,18085,    3,18083,    2,18082,
-18089,18091,    2,18083,    3,18082,18095,18097,  465,17993,    5,18101,
-    4,18100,18103,18105,    4,18101,    5,18100,18109,18111, 9082,17993,
- 8495,18115,17910,17993,17833,18119,17839,18119, 8495,18119,  375,17993,
-    7,17993, 8495,18129, 8997,18131,17827,18129,17829,18135,17831,18135,
- 8997,18135, 8997,18128, 8495,18143,17827,18128,17833,18147,17839,18147,
- 8495,18147, 8997,17993, 8647,18154,17895,18154,    7,18154, 8495,18161,
-17827,17993,  241,18164,    6,18167,    6,18166,  265,18165,17895,18173,
-  261,18164,  375,18165,  260,18164,  251,18164,    6,18165,18177,18185,
-    7,18165,18171,18189,18181,18189,    6,18164,18173,18195,  241,18194,
-18189,18199,18189,18195,    7,18164,17833,18205,17839,18205,18169,18205,
-18185,18205, 8495,18205,    1,  843,    0,  842,18217,18219,  483,18220,
-    4,18223,    4,18222,  581,18220,  580,18220,    4,18221,18229,18233,
-    5,18221,18227,18237,18231,18237,    4,18220,  483,18242,18237,18245,
-18237,18243,    5,18220,18225,18251,18233,18251,    0,  413,15309,18257,
-  265,18258,15363,18261,15424,18257,15363,18265,13375,18257,13381,18257,
- 4888,18257,13162,18257,  251,18256,  375,18256,  265,18257,15309,18281,
-15383,18283,15309,18280,15363,18287,  331,18257, 2663,18257,  251,18293,
-    9,18256,  483,18256,  375,18257, 4863,18300,13119,18300, 4863,18257,
-  375,18306,13119,18257,  375,18310,    6,18257,  264,18314,    7,18257,
-  264,18318,  264,18319,  265,18319,18321,18325,  265,18318,18323,18329,
- 8647,18319,  375,18319,  331,18319,    7,18256, 1689,18339, 1705,18339,
- 2701,18339,18317,18339, 8717,18339,12755,18339, 7627,18339, 7895,18339,
- 3785,18339,13443,18339, 7287,18339,  265,18339,  331,18339, 8495,18339,
-  375,18339,12745,18339,  457,18371,  375,18371,    6,18256,18291,18377,
-12745,18257,17895,18381, 8647,18381,    7,18381, 8495,18387,    1,  412,
- 1679,18391,  448,18391, 4349,18395, 4351,18391, 4390,18391,18300,18391,
- 4457,18391,18277,18391, 1673,18391,18279,18391, 1789,18391,18364,18391,
-18335,18391, 3427,18391, 7037,18391,  265,18391,  445,18422, 4349,18425,
-  445,18423, 4371,18429,16095,18391,12287,18391, 5189,18391,18299,18391,
-18297,18391, 2153,18391, 2151,18391, 4371,18391,  331,18446,18339,18391,
-  331,18450,  331,18391, 4371,18454,18339,18454,  445,18391,  265,18460,
- 4349,18463,    5,18461,    4,18460,18467,18469,    4,18461,    5,18460,
-18473,18475,  465,18391,    3,18479,    2,18478,18481,18483,    2,18479,
-    3,18478,18487,18489, 8386,18391,18318,18391,  375,18391,18257,18496,
-    7,18391,  265,18501,18257,18503, 8337,18500,18257,18500, 8337,18391,
-    7,18510, 8861,18391,    6,18515,    7,18515,    6,18514,18519,18521,
-    7,18514,18517,18525,18257,18391,  265,18528,  241,18529,    6,18532,
-    6,18533,  375,18528,  261,18529,  260,18529,  251,18529,    6,18529,
-  241,18546,18531,18547,    7,18529, 8495,18553,18537,18553,    6,18528,
-18553,18559,18541,18559,    7,18528,18549,18565,18535,18565,18547,18565,
-18543,18565,    0,  843,    1,  842,    5,18576,18575,18577,  483,18581,
-    4,18582,    4,18583,  581,18581,  580,18581,    4,18581,  483,18592,
-    5,18581,18587,18597,    4,18580,18597,18601,18589,18601,    5,18580,
-18595,18607,18585,18607,18593,18607,18591,18607,    1, 1217,16117,18617,
-12291,18617,16103,18617, 4959,18617,17399,18617, 2205,18617, 2207,18617,
- 1269,18617,    5,18633,    4,18632,18635,18637,    4,18633,    5,18632,
-18641,18643, 1259,18617,    2,18647,    3,18646,18649,18651,    3,18647,
-    2,18646,18655,18657,    7,18617,    0, 1216,    9,18662,18617,18665,
-  483,18662,18617,18669,18660,18663,    7,18663,18617,18674,18617,18663,
-    6,18679,    7,18679,    6,18678,18683,18685,    7,18678,18681,18689,
-    1, 1531, 4904,18693,17609,18693,17586,18693, 4903,18693,    9,18700,
-17579,18693,    9,18704,    9,18693, 4903,18708,17579,18708,    5,18692,
-    0, 1530,18693,18717,    4,18719,    5,18719,    4,18718,18723,18725,
-    5,18718,18721,18729,    1,   19, 1369,18733,    3,18733,    3,18732,
- 9875,18739,    0,   18,18733,18743,    2,18745,    3,18745,    2,18744,
-18749,18751,    3,18744,18747,18755,    0, 1217,12293,18759,16105,18759,
- 1269,18759,    2,18765,    3,18764,18767,18769,    3,18765,    2,18764,
-18773,18775, 1259,18759,    5,18779,    4,18778,18781,18783,    4,18779,
-    5,18778,18787,18789,  375,18759,    7,18759,    1, 1216,    4,18796,
-18759,18799,    3,18796,    6,18803,    6,18802,    5,18796,    6,18809,
-    6,18808,    2,18796,18759,18815, 5241,18797,   14,18796, 1274,18796,
- 2157,18797, 2155,18797,18795,18797,18799,18829,18815,18829,   15,18796,
- 1275,18796,    6,18796,    3,18838,    5,18838,    7,18796,18805,18845,
-18811,18845,18794,18797,18803,18851,18809,18851,    6,18797,18800,18857,
-18816,18857,18799,18857,18759,18862,18815,18857,18759,18866,18835,18857,
-18837,18857,18759,18857,18799,18874,18815,18874,    7,18797,18841,18881,
-18843,18881,18803,18881,18759,18887,18809,18881,18759,18891,18807,18881,
-18813,18881,18821,18881,18823,18881,18759,18880,18803,18903,18809,18903,
-18759,18797,    6,18909,    7,18909,    6,18908,18913,18915,    7,18908,
-18803,18919,18809,18919,18911,18919,    0, 1531,    1, 1530, 6717,18929,
-    9,18931,18927,18929,    4,18935,    5,18935,    4,18934,18939,18941,
-    5,18934,18937,18945,    0,   19,    1,   18,18949,18951,    2,18953,
-    3,18953,    2,18952,18957,18959,    3,18952,18955,18963,    0,    2,
-11303,18967,11349,18968, 5071,18967, 5097,18972,11350,18967, 5098,18967,
-11304,18967,11307,18981, 5072,18967, 5075,18985,11315,18967, 5079,18967,
-13961,18967,  581,18993,    4,18992,18995,18997,    5,18992,  580,18993,
-19001,19003,    5,18993,    4,18993,  483,19008,19001,19011,  483,18993,
-    4,19014,19001,19017,    4,19015,19007,19021, 1181,18966, 1206,18966,
- 3451,18967,  375,19029, 1967,18967,  375,19033,  567,18966, 4992,19037,
-    9,19037, 4971,19040, 4971,19037,    9,19044, 1141,18966,  555,18966,
-  981,18967,16129,18966,16143,19055, 9523,18967,  483,19059, 9525,19061,
- 1007,18967, 1297,18966,  524,18966,    0,19069,    4,19070,    4,19069,
-    0,19074,   97,18967,11067,18967, 1275,19080, 7947,19083, 1205,18967,
-  571,18967,11070,18967, 7947,19091,10043,18967, 1275,19094,10041,19097,
-10044,18967,10041,19101, 1206,18967, 3001,19105, 1901,19105,   30,18967,
- 8165,19111, 8150,18967,   33,19115, 1181,18967, 3663,19119, 1997,19119,
- 3069,19119, 1923,19119, 9769,18967, 3972,18967, 8124,18967, 9357,18967,
- 9346,18967, 8782,18967, 4244,18967, 4178,18967, 9768,18967, 8804,18967,
- 8245,18967, 8249,18967, 8247,18967, 6950,18967,12299,18967, 4652,18967,
-10684,18967,14096,18967, 4992,18967,  203,18967,11731,19167,17771,18967,
-  113,19171,14223,18967,   85,18967,11731,19177,11031,18967,  113,19181,
-  107,18967,11731,19185,11699,18967,  113,19189, 8701,18967, 9293,18967,
- 3933,18967,    9,19196, 8109,18967,    9,19200, 4213,18967,    9,19204,
- 4147,18967,    9,19208, 8757,18967,    9,19212, 9335,18967,    9,19216,
-10202,18967, 7947,19221,17637,19221,  578,18967, 4935,19227,11349,18967,
-11303,19230, 5097,18967, 5071,19234, 8647,18967,   11,19239,10603,18967,
-  375,19243,10427,19243,10609,19243,    7,19243,10607,19251,    9,19242,
- 4625,18967,  375,19257,   75,19257, 4629,19257,    7,19257, 4627,19265,
-    9,19256,11277,18967,   10,19270,11307,19273,   10,19271,11349,19277,
-  483,19271, 5045,18967,   10,19282, 5075,19285,   10,19283, 5097,19289,
-  483,19283, 6789,18967,    9,19294,  288,18967,  525,18967,19073,19301,
-19077,19301, 1811,19301, 1877,19301,    5,19301,17563,19301, 4861,19301,
- 1290,18967,    5,19317, 3721,19317, 1985,19317,17563,19317, 4861,19317,
-  296,18967, 8861,19329,   12,18967, 8165,19333,   18,18967,   25,18967,
-    9,19338, 8165,19341, 8165,19339,    9,19345, 7971,18967,    9,19348,
-   33,19351,   33,19349,    9,19355,   47,18967,11731,19359,10107,18967,
- 1275,19362, 7947,19365,17637,19365,  113,19363,   59,18967,17635,19373,
-10291,18967,  165,19377,  375,18967,  510,18967,   11,18967, 8165,19385,
-    9,19387,  265,19384,    9,19384, 8165,19393,    9,18967,  567,19397,
- 4971,19399,    6,19397,   25,19396, 8165,19405, 7971,19396,   33,19409,
- 3933,19396, 8109,19396, 4213,19396, 4147,19396, 9335,19396, 8757,19396,
- 8495,19396, 6789,19396, 4625,19396,10603,19396, 4971,19396,14073,19396,
-  567,19396, 4935,19437,   11,19397, 8109,19441, 3933,19441, 8495,19441,
- 7971,19441,  265,19396, 8861,19451,   11,19396, 8165,19455,  483,19396,
-   17,18967, 1275,19460, 4861,19463,17563,19463, 3721,19463, 1985,19463,
-   15,19460,   15,18967, 9731,19474, 1011,19475,  483,19475,   17,19474,
- 6515,18967,  483,19485, 6527,19487, 6557,19487, 6561,19487,14210,18967,
-   17,19495, 4971,18967,    9,19498,14073,18967,    9,19502, 5921,18967,
-  375,19507,10046,18967,   16,18966,    0,19513,    4,19514,19317,19517,
-19463,19517,    4,19513,    0,19522,19317,19525,19463,19525, 8495,19513,
-10351,19513, 4311,19513, 4329,19513, 8717,19513,10055,19513, 3785,19513,
-   14,18966,    6,19545,    2,19546,    2,19545,    6,19550,  482,19545,
-   17,19545,   10,18966,17777,19559, 2215,19559,11307,19559, 5075,19559,
-11713,19559, 2221,19559,11087,19559,10439,19559,10665,19559, 4643,19559,
-11037,19559, 2233,19559, 9195,19559,11277,19559, 5045,19559,19455,19559,
-19333,19559,19393,19559,19385,19559,    9,19597, 9317,19559, 9755,19559,
- 4321,19559,10171,19559, 4295,19559, 3833,19559,10603,19559,    9,19613,
- 4625,19559,    9,19617,    8,18967,   11,19621,   14,18967, 9731,19625,
-   17,19625,   11,18966, 8124,19631, 3972,19631, 8804,19631, 8150,19631,
- 7971,19631,    9,19640, 3933,19631,    9,19644, 8109,19631,    9,19648,
- 8495,19631,    9,19652,    9,19631, 8109,19656, 3933,19656, 8495,19656,
- 7971,19656,    9,18966,10001,19667,    5,19669,    4,19668,19671,19673,
-    4,19669,    5,19668,19677,19679,   16,18967,    7,19683,   10,18967,
-11277,19686,11307,19689, 5045,19686, 5075,19693,11349,19687, 5097,19687,
- 9195,19687,19656,19687,19441,19687,19631,19687,    9,19706,11277,19687,
-11303,19711, 5045,19687, 5071,19715,    9,19687,19631,19718,   19,18967,
-   13,18967,19631,19725,10385,18967,  101,19729,  128,19729,    9,19729,
-  113,19734,  483,19729,10081,19739,11759,19739,10405,19739,  113,19729,
-    9,19746,   67,18967,11613,19751,12216,19751,    9,19751,11731,19756,
-11731,19751,    9,19760,  566,18967,  253,19765, 1471,19765,   53,19765,
-  256,18967,  629,18967, 1413,18967, 1471,19777, 1346,18967,  340,18967,
- 8165,19783,  567,18967, 4935,19787,    9,19789,    9,19786, 4935,19793,
-  305,18967,  959,18967,11731,19799,  759,18967,11731,19803,  331,18967,
-17635,19807, 1325,18967,17635,19811,10001,18967,10003,19815,    4,19817,
-    4,19816,10007,19815,  580,19815,10006,19815,  483,19815,    4,19828,
-    4,19829,  581,19815,    4,19815,10003,19836,  483,19836,    5,19815,
-19819,19843,19833,19843,    4,19814,19835,19849,19823,19849,19843,19849,
-    5,19814,19839,19857,19821,19857,19825,19857,19827,19857,19841,19857,
-19831,19857,19837,19857, 9731,18967,   15,19872, 8495,18967,  483,19877,
-    9,19876, 9195,18967,  113,19883,11731,19883,  241,18967,    7,19888,
-  483,18967,    9,19892,   17,19893,  903,19897,    5,19892,  253,19901,
- 1471,19901,   53,19901,    5,19893, 1505,19909,  903,18967,    7,19913,
- 1275,18967,10043,19916,10041,19919,11067,19916, 7947,19923,17637,19917,
-10107,19927,    0,19916,    4,19931,    0,19932,19917,19935,    7,19932,
-19937,19939,    7,19931,    4,19942,   16,19931,    6,19916,    4,19949,
-    6,19950,19917,19953,    1,19950,19955,19957,    1,19949,    4,19960,
-    8,19916,    4,19965,    1,19966,    1,19965,    4,19970,10107,19916,
- 7947,19975,17637,19975, 7947,19917,11067,19981,10107,19981,    9,19917,
- 2009,19987, 3135,19987,19969,19987,19973,19987, 5231,19987,19957,19987,
-19963,19987,    0,19987, 5175,19987,14065,19987,   17,19916,19525,20009,
-19517,20009, 3721,20009, 1985,20009,    1,20009,19987,20019,20003,20009,
- 4861,20009,17563,20009,    5,19916,    4,19917,    5,19917,  265,18967,
-17635,20035, 5771,20035,    9,20035,   11,20034,   11,20035,    9,20034,
- 8861,20047,  483,20035,    7,20034, 8165,20053,    7,20035, 8495,20057,
-  587,18967,    7,20061,    4,20063,    4,20062,   16,20061,   17,20061,
-    4,20060,20071,20073,    5,20060,20067,20077,20069,20077,    4,20061,
-    7,20082,20077,20085,    5,20061,20065,20089,13947,18967,    5,20092,
-   17,20095,    5,20093,    9,20099,    4,18966, 8770,20103, 8729,20103,
- 8697,20103, 8784,20103, 4266,20103, 9262,20103,    2,20103,    7,20117,
- 8684,20103, 8717,20121,  331,20121, 8647,20103, 8757,20126, 8757,20103,
- 8647,20130,  375,20130, 4213,20103,  375,20136, 9750,20103,19687,20103,
-  347,20103,  386,20103,  340,20103,  331,20149,  375,20103, 8757,20152,
- 4213,20152, 9195,20152,  305,20152,    9,20103,10291,20103,  483,20165,
-   59,20103,   15,20103, 9195,20103,  375,20172,  331,20103,10001,20103,
-    9,20179,  305,20103,  375,20182,    7,20103, 8495,20186, 8717,20189,
-  331,20189, 8495,20187, 8757,20195, 9731,20186,  265,20187, 8757,20201,
- 4213,20201, 9195,20201,  305,20201,  265,20186,  331,20211, 8647,20187,
- 1325,20103,    7,20102, 8495,20219,10351,20219, 4311,20219, 4329,20219,
- 3785,20219,10055,20219, 8717,20219,  483,20103, 1275,20103,  265,20103,
-    7,20239, 8495,20241,  375,20241,    7,20238,  331,20247, 9731,20103,
-    7,20250, 8495,20103,    7,20254, 8717,20257,  331,20257,  483,20255,
-    9,20255,    7,20255, 8647,20267,  375,20267,    5,18966, 9535,20273,
- 9537,20273,    2,20273,    6,20278, 9559,20273,  482,20273, 9563,20273,
- 9362,20273,  922,20273, 1413,20273,   19,20273,   12,20273, 8150,20273,
- 8804,20273,19385,20273, 1290,20273, 9533,20305,  525,20273, 9533,20309,
- 7971,20273,    9,20312,   11,20273,    9,20316,   17,20273, 1275,20320,
- 9533,20323,    9,20273, 9195,20326,   11,20326, 7971,20326, 8495,20326,
- 9195,20273,    9,20336,    6,20273,    5,20341,    2,20340,    5,20340,
-18967,20347,   11,20341,    7,20273,    5,20353,    6,20272,   17,20357,
-    7,20272, 9195,20361,11277,20361, 5045,20361, 9755,20361, 4295,20361,
-10171,20361, 4321,20361, 3833,20361, 9317,20361,  483,20273,  903,20380,
- 1275,20273,   17,20384, 9533,20387,  903,20273,  483,20390, 8495,20273,
-    9,20394, 9731,20273,    6,20398,    7,20398,    6,20399,20403,20405,
-    7,20399,20401,20409,    6,18966,19836,20413,19857,20415,19854,20413,
-19871,20413,19815,20413,    4,20423,19843,20425,    4,20422,19857,20429,
-19477,20413,19145,20413,19875,20413,19843,20413,19849,20438,19849,20413,
-19843,20442,19718,20413,19473,20413,19483,20413,19725,20413,   19,20413,
-   12,20413,19337,20413,19687,20413,    9,20460,19475,20413, 9731,20465,
-   17,20465,    9,20413,19687,20470,   11,20470,   11,20413,    9,20476,
- 8495,20413,    5,20413,    9,20483,    4,20413,19815,20487,19849,20489,
-19815,20486,19857,20493,    5,20412,   17,20497,    7,18966,10439,20501,
-11087,20501,10665,20501, 4643,20501,11307,20501, 5075,20501,17777,20501,
- 2215,20501,18739,20501, 4339,20501,11713,20501, 2221,20501,11037,20501,
- 2233,20501,19626,20501,19129,20501,    0,20501,    4,20534,19301,20537,
-19317,20537,19463,20537,20009,20537,10036,20501,19843,20547, 8800,20501,
- 8714,20501, 5045,20501,11277,20501, 4551,20501,19628,20501,19455,20501,
-19393,20501,19723,20501,19333,20501,  305,20501, 8495,20570,  959,20501,
-19625,20501, 9731,20576,   17,20576,10603,20501,    9,20583, 4625,20501,
-    9,20587,19385,20501,    9,20591,  759,20501,   47,20501,10107,20501,
-  241,20599,  265,20598,10196,20501,   11,20501, 8495,20606,   17,20501,
-19625,20610,   59,20501,10291,20501, 1011,20617,   15,20501, 1325,20501,
- 8495,20501,   10,20624,   10,20625,  305,20624,   11,20624,20629,20633,
-   11,20625,20627,20637, 9731,20501,19625,20640,    4,20501,    7,20645,
-  483,20647,18967,20649,    0,20644,19301,20653,19317,20653,19463,20653,
-20009,20653,20651,20653,    7,20644,19916,20665,20653,20667, 1275,20665,
-18967,20670,20653,20673,18967,20665, 1275,20676,20653,20679,10001,20644,
-19843,20683, 1011,20645,10047,20645,    5,20501, 9287,20691,  331,20501,
-    4,20500, 8495,20697, 4311,20697,10351,20697, 3785,20697, 4329,20697,
- 8717,20697,10055,20697,    5,20500, 9195,20713,11277,20713, 5045,20713,
- 4321,20713, 9755,20713, 4295,20713,10171,20713, 9317,20713, 3833,20713,
-  903,20501,  265,20501,10107,20734, 9195,20501,  241,20739,10001,20501,
-    4,20742,19843,20745,    5,20742,18967,20748,    4,20743,20751,20753,
-19511,20753,19857,20753,    5,20743,    7,18967, 8810,20762, 8811,20762,
-    2,20763,    1,20768,20483,20763, 8495,20773, 8800,20763,20273,20763,
- 8495,20763,   11,20780, 8810,20763,20767,20785,10081,20763, 1011,20789,
- 1010,20788,20791,20793, 1010,20789, 1011,20788,20797,20799,  566,20763,
-   11,20763, 9731,20805, 8495,20805, 8495,20804,  265,20763,20482,20763,
-   17,20815,  567,20763, 9195,20819,    9,20763, 8811,20763,20765,20825,
-  241,20762,  265,20762, 8165,20831, 1011,20763,  375,20763,    4,20762,
-20815,20839,    5,20762,11276,20842, 5044,20842,11277,20842,11276,20843,
-20849,20851, 5045,20842, 5044,20843,20855,20857,20773,20843,20470,20843,
-20103,20843,20413,20843,    9,20866, 9195,20843,11277,20843,20845,20873,
- 5045,20843,20847,20877,    9,20843,20413,20880,    4,20763,20480,20885,
-    7,20884,20843,20889, 9366,20885,    1,20885,    3,20894,20842,20896,
-20843,20897,20899,20901,20889,20900,20842,20897,20843,20896,20907,20909,
-20890,20897,20889,20897,20843,20914,    3,20885,    1,20918,20842,20920,
-20843,20921,20923,20925,20889,20924,20842,20921,20843,20920,20931,20933,
-20890,20921,20889,20921,20843,20938, 9195,20885,  483,20942,20866,20885,
- 8495,20885,20413,20948,  483,20885, 9195,20952,20413,20885, 8495,20956,
-20843,20956,20843,20885,    1,20962,    3,20964,    3,20962,    1,20968,
-    7,20963,20897,20973,20921,20973,20967,20973,20971,20973,20413,20962,
-    5,20763,    7,20985,   17,20985,20413,20989,20413,20984,20839,20993,
-   17,20993,  483,20984,20839,20985,    1,21001,    3,21002,    3,21001,
-    1,21006,    7,21000,21005,21011,21009,21011,20413,21001,20413,20763,
-    5,21019,20885,21021,    9,21021,    5,21018,20839,21027,   17,21027,
-  483,20763,    5,21032,    5,18967,    0,21037,    3,21038, 9357,21037,
-20742,21037,20761,21045,20187,21037, 8495,21049,20501,21037,10001,21036,
-20753,21055,20763,21037, 8495,21059,13947,21036,   17,21063,  256,21037,
-20186,21037,20885,21037,    7,21071,20897,21073,20921,21073,    9,21037,
- 1275,21079, 9533,21081,21041,21081,   17,21037, 9195,21087, 7971,21087,
- 8495,21087,  483,21036,  253,21095, 1471,21095,   53,21095, 1275,21036,
-    6,21036,20640,21105,20610,21105,21069,21105, 9731,21105,20501,21112,
-20501,21105, 9731,21116,   17,21116,   17,21105,20501,21122,    7,21036,
-11276,21126, 5044,21126,11277,21126,11276,21127,21133,21135, 5045,21126,
- 5044,21127,21139,21141,    1,21127,    3,21144,18967,21147,    3,21127,
-    1,21150,18967,21153,18967,21127,20470,21127,21049,21127,20413,21127,
-    9,21162,20103,21127, 9195,21127,11277,21127,21129,21171, 5045,21127,
-21131,21175,    9,21127,20413,21178,    6,21037,21149,21183,21155,21183,
-20254,21183,19243,21183,19257,21183,18967,21183,    1,21183,    3,21196,
-21126,21198,21127,21199,21201,21203,21126,21199,21127,21198,21207,21209,
-    3,21183,    1,21212,21126,21214,21127,21215,21217,21219,21126,21215,
-21127,21214,21223,21225, 8495,21183,20103,21228,19687,21183,20843,21183,
-21166,21183,   11,21183,20501,21239,20103,21183, 8495,21242,21127,21242,
-21127,21183,20103,21248,20763,21183, 9731,21253,   17,21253,    7,21037,
-19625,21259,   15,21259,20413,21263,20103,21258,21105,21267,  241,21258,
-21105,21259,20103,21273,20103,21037,    7,21277,21199,21279,21215,21279,
-11277,21279, 5045,21279,21183,21279,    6,21276,    1,21291,    3,21292,
-21279,21295,    3,21291,    1,21298,21279,21301,    7,21276,21105,21305,
-  241,21037,  483,21309,    7,21308,    4,18967,21183,21315,    0,21314,
-20309,21319,  524,21319,20273,21323,20305,21319, 1291,21319,20273,21329,
-21081,21319,20323,21319,20387,21319,   11,21319,  483,21338,20273,21341,
-  483,21319,   11,21344,20273,21347,  165,21315,17635,21315, 1011,21352,
-17642,21315,20413,21315,    6,21359,    9,21315,20352,21315,11277,21365,
- 5045,21365,20985,21315,   11,21315,10075,21315,  483,21315, 1347,21315,
-    6,21314,    1,21381,    3,21382,21365,21385,    3,21381,    1,21388,
-21365,21391,20273,21381,   11,21381,    7,21314,    6,21315,   17,21401,
-    7,21315,21384,21404,21390,21404,21385,21405,20273,21411,21407,21411,
-21391,21405,20273,21417,21409,21417,21385,21404,21384,21405,21423,21425,
-21391,21404,21390,21405,21429,21431,11276,21404, 5044,21404,11276,21405,
-11277,21404,21439,21441, 5044,21405, 5045,21404,21445,21447,    0,21405,
-    4,21450,    4,21405,    0,21454, 8495,21405, 5045,21405,20273,21461,
-21437,21461,11277,21405,20273,21467,21435,21467,    9,21405,20273,21404,
-21385,21475,21391,21475,11277,21475, 5045,21475,  265,21405,  483,21405,
-18967,21487,21453,21489,21457,21489,21381,21405,20273,21315,    6,21497,
-    1,21499,    3,21500,    3,21499,    1,21504,    7,21496,21503,21509,
-21507,21509,21385,21509,21391,21509,11277,21509, 5045,21509, 1011,21315,
-17635,21522,    6,18967,    2,21526,   11,21529,20103,21527,20690,21527,
-    9,21535,21259,21527,    9,21539,   17,21527,    4,21526,   11,21545,
-    5,21526,20640,21549,21259,21549,20610,21549, 9731,21549,20501,21556,
-20501,21549, 9731,21560,   17,21560,   17,21549,20501,21566,    4,21527,
-   15,21571,    5,21527,  482,21575,    2,21575,    6,21578,    6,21575,
-    2,21582,    9,21575,20501,21587,20501,21574,    9,21591,20501,21527,
-    5,21595,   17,21597,    5,21594,    9,21601,    1,    3,19718,21604,
-19719,21604,19402,21605,20962,21604,20973,21613,21248,21604,21272,21604,
-21494,21604,20963,21604,21249,21604,21001,21604,21011,21627,21273,21604,
-21495,21604,21178,21604,20880,21604,21179,21604,20881,21604,21049,21604,
-20773,21604,21361,21604,15753,21605,  803,21649,14387,21605,  375,21653,
- 9663,21604, 9177,21604,20351,21604,20485,21604,21360,21604,  990,21604,
- 4745,21667,19685,21605,21087,21671,21156,21605,21087,21675,21317,21605,
-21291,21604,21279,21681,21499,21604,21509,21685,  996,21604, 4745,21689,
-21472,21604,21473,21604,  761,21605, 3419,21697, 6469,21697, 3119,21697,
-21048,21604,20772,21604,  973,21604,  955,21708, 4745,21711,    9,21708,
- 4745,21715, 4745,21709,  955,21719,    9,21719, 2077,21605,    7,21725,
-   14,21724,21727,21729,    6,21725,   15,21724,21733,21735,20350,21604,
-20484,21604, 9662,21604, 9176,21604,21380,21604,21104,21604,21126,21604,
-21183,21751,    9,21751,20842,21604,20885,21757,    9,21757,  305,21604,
-18967,21763,  375,21765,  955,21604,  973,21769, 4805,21771,  973,21768,
- 4745,21775,17423,21769, 4745,21769,  713,21604,21404,21604,21381,21785,
-    9,21785,20884,21604,21316,21605,21182,21604,20501,21795,21793,21795,
-21405,21604,21381,21800,    9,21800,20885,21604,20843,21806,20890,21807,
-20889,21807,20843,21812,20973,21807,21073,21807,20413,21807,20843,21807,
-21757,21823,20889,21822,21183,21604,21127,21828,21279,21829,21679,21829,
-20103,21829,21127,21829,21751,21839,21105,21604,21381,21604,21365,21845,
-21405,21844,20413,21845,21475,21845,21405,21845,21785,21855,20273,21855,
-21509,21845,20843,21604,20885,21862,    9,21862,21127,21604,21183,21868,
-18967,21869,21183,21873,    9,21868, 1199,21605,13923,21604,13935,21881,
- 9437,21605,  587,21885, 9439,21887, 1177,21605, 1421,21604,  668,21604,
-    1,21895,    5,21896,    5,21895,    1,21900,  117,21605,11759,21605,
- 1369,21906, 7971,21909,11760,21605, 7971,21913,  809,21605,  989,21605,
- 9929,21605, 1369,21920, 9927,21923, 9930,21605, 9927,21927,19596,21605,
-    9,21931,19556,21605,20170,21605,19707,21605,    9,21939,20956,21605,
-21791,21943,21242,21605,21795,21947,20773,21605,21707,21951,21049,21605,
-21705,21955,21373,21605,20464,21605,19557,21605,20499,21605,20359,21605,
- 9181,21605, 9671,21605, 4145,21605, 3801,21605, 4135,21605,10101,21605,
-20577,21605,19656,21605,19441,21605,19332,21605,19392,21605,19454,21605,
-21059,21605,19440,21605,19657,21605, 4134,21605,10100,21605,20498,21605,
-20358,21605,20142,21605,    9,22007,20576,21605,20864,21605,    9,22013,
-21116,21605,21166,21605,21183,22019,    9,22019,21560,21605, 9180,21605,
- 9670,21605, 3800,21605, 4144,21605,21026,21605,20839,22035,20814,21605,
-20839,22039,20992,21605,20839,22043,21359,21605,21845,22047,21647,22047,
-21053,21605,21795,22053,20779,21605, 8087,21605, 8091,21605, 8089,21605,
-20303,21605,    9,22065,20465,21605,10786,21605,11131,21605, 4696,21605,
-11970,21605,19722,21605,19333,21605,19393,21605,19455,21605,20351,21605,
-21739,22087,20485,21605,21741,22091, 9663,21605,21743,22095, 9177,21605,
-21745,22099,20350,21605,21661,22103,20484,21605,21663,22107, 9662,21605,
-21657,22111, 9176,21605,21659,22115,10099,21605,   17,22119,   17,22118,
- 4133,21605,   17,22125,   17,22124, 8251,21605,    9,22131, 3807,21605,
-    9,22135,   13,21604,18967,22139,   19,21604,20501,22143, 9875,22143,
-   12,21604, 8251,22149, 3807,22149,19559,22149,20501,22149, 9875,22149,
- 8165,22149,   18,21604, 3799,21605,   17,22165,   17,22164, 4143,21605,
-   17,22171,   17,22170, 4283,21605,    9,22177, 4279,21605,    9,22181,
- 9669,21605,   17,22185,   17,22184, 9179,21605,   17,22191,   17,22190,
- 9673,21605,    9,22197, 9967,21605,    9,22201,19624,21605,20501,22205,
-   17,22205,19686,21605,22149,22211,19441,22211,19656,22211,21607,22211,
-19631,22211,    9,22220,    9,22211,19631,22224,19559,21605,19385,22228,
-    9,22231,    9,22229,19545,21605,   17,22236,   17,22237,10102,21605,
- 7971,22243,17053,22243,  629,21605,21117,21605,21561,21605,20867,21605,
-20885,22255,21167,21605,21183,22259,21548,21605,   17,22263,20501,22263,
-21104,21605,21069,22269,21267,22269,21305,22269,21259,22269,20103,22277,
-   17,22269,20501,22269,20838,21605,20985,22285,20842,21605,21865,22289,
-21809,22289,21613,22289,21637,22289,21867,22289,20773,22289,20956,22289,
-21863,22289,20885,22305,    9,22305,20885,22289,20413,22310,20413,22289,
-20885,22314,21126,21605,21871,22319,21831,22319,21617,22319,21635,22319,
-21877,22319,21049,22319,21242,22319,21869,22319,21183,22335,    9,22335,
-21183,22319,20103,22340,20103,22319,21183,22344,21020,21605,20885,22349,
-21278,21605,21183,22353,21052,21605,21829,22357,21127,22357,21358,21605,
-21747,22363,21665,22363,21532,21605,20497,21605,   17,22371,   17,22370,
-20361,21605,    9,22377,20713,21605,    9,22381,20357,21605,   17,22385,
-   17,22384,21048,21605,21643,22391,20772,21605,21645,22395,21509,21605,
-21381,22399,21499,22399,    9,22399,21475,21605,21381,22407,    9,22407,
-21365,21605,21381,22413,    9,22413,11971,21605, 4697,21605, 8387,21605,
-    9,22423,11949,21605,   11,22426,    5,22428,    6,22426,    5,22432,
-    5,22426,    6,22436,    6,22437,    7,22426,22441,22443,    7,22427,
-22435,22447,22439,22447,22431,22447,   14,22426,22447,22455,    6,22427,
-   15,22426,22459,22461,    9,22426,    9,22427, 4669,21605,   11,22468,
-    5,22470,    6,22468,    5,22474,    5,22468,    6,22478,    6,22479,
-    7,22468,22483,22485,    7,22469,22477,22489,22481,22489,22473,22489,
-   14,22468,22489,22497,    6,22469,   15,22468,22501,22503,    9,22468,
-    9,22469,12345,21605,    5,22510,    4,22510,   12,22510,   13,22511,
-22517,22519,   12,22511,   13,22510,22523,22525,    4,22511,22513,22529,
-    5,22511,22515,22533, 5123,21605,    5,22536,    4,22536,   12,22536,
-   13,22537,22543,22545,   12,22537,   13,22536,22549,22551,    4,22537,
-22539,22555,    5,22537,22541,22559,10697,21605,    9,22562,19385,21605,
-19559,22566,    9,22569,    9,22567,19559,22573,19397,21605,    6,22576,
-   11,22577,   11,22576,19475,21605,20413,22584, 1406,21605, 1396,21605,
-  525,21605,  903,22593,  934,21605,    9,22597, 1290,21605,  903,22601,
-  669,21605,21899,22605,21903,22605, 1861,22605, 1887,22605,    4,22605,
-17013,22605, 4917,22605,19687,21605,22139,22621,21609,22621,    9,22621,
-20103,22620,    9,22629,19625,21605,20501,22632,19384,21605,21087,22637,
-20326,22637,    9,22636,20273,22637,    9,22644,    9,22637,20273,22648,
-19396,21605,    5,22652,   10,22652,19441,22657,   10,22653,19455,22661,
-   11,22652,22661,22665,   11,22653,22657,22669,19474,21605,20413,22673,
- 1418,21605,    4,22677, 3755,22677, 1995,22677,17013,22677, 4917,22677,
-   12,21605,22139,22689,18967,22688,   18,21605,22143,22695,21252,21605,
-21279,21605,21183,22701,21291,22701,    9,22701,20483,21605,20763,22708,
-20187,21605,21036,22712,21069,22715,21036,22713,21049,22719,21037,22713,
-21037,22712,    9,22713,20353,21605,    5,22729,21315,22729,   33,21605,
- 8150,22735,17727,22735,    9,22735, 7971,22740, 7971,22735,    9,22744,
-17025,22735, 8165,21605,   30,22751,  181,22751,    9,22751,   25,22756,
-   25,22751,    9,22760,  145,22751,   53,21605,17049,22767,10219,21605,
-  903,22771,  155,22771,10081,21605, 1369,22776, 7971,22779,17053,22779,
-  257,21605,    9,22785, 1171,21605, 4722,22789, 4713,22789,  903,22792,
-21315,22789,  903,22789, 4713,22798,  628,21605,    9,22803,   11,21605,
-  766,22807,  767,22807,20984,22807,20762,22806,22813,22815,20985,22807,
-20762,22807,22140,22807,19718,22807,19725,22807,  586,22806,22809,22829,
-    5,22807,20763,22832,22815,22835,20763,22833,22821,22839,  587,22832,
-22829,22843,  587,22833,  586,22807,22847,22849, 5515,22807,17043,22807,
- 4825,22807,17727,22807, 8150,22807,22139,22807,18967,22862,19396,22806,
-19397,22806,19396,22807,22869,22871,19397,22807,22867,22875,22653,22875,
-20763,22807,    5,22880,22815,22883,19687,22807,    9,22886, 7971,22807,
-    9,22890,19461,22807,    9,22807,19687,22896, 7971,22896,18967,22896,
-18967,22807,22139,22904,    9,22904,20103,22905,    9,22911, 1369,22806,
-  903,22806,    9,22917,  587,22807,    5,22920,22829,22923,18967,22806,
-20326,22927,21087,22927,    9,22926,20273,22927,    9,22934,    9,22927,
-20273,22938,    9,22806,18967,22942,20763,22806,22819,22947,  587,22806,
-22811,22951,    9,22951,   17,21605,19722,22956,19723,22957,22959,22961,
-19723,22956,19722,22957,22965,22967,19396,22956,19396,22957,19397,22956,
-22973,22975,19545,22956,20497,22956,20357,22956, 4133,22956,10099,22956,
- 3799,22956, 4143,22956, 9179,22956, 9669,22956,19475,22957,21315,22957,
-19397,22957,22971,23001, 1369,22956, 1275,22956,  903,23007,  587,22957,
-  903,22957,   15,21605,20103,23014,18967,23015,20501,23019, 1369,23014,
- 4917,23023,17013,23023, 3755,23023, 1995,23023,18967,23014,20413,23033,
-    9,21605,19631,23036,19384,23036,19384,23037,22567,23043,19385,23036,
-10697,23036, 4669,23036,11949,23036,   11,23037,23047,23055,22567,23055,
-18967,23055,18967,23036,   10,23062,   10,23063,   11,23062,23067,23069,
-   11,23063,23065,23073,   11,23036,18967,23076, 7049,21605,  587,23081,
- 7051,23083, 7055,23083, 7059,23083,17219,21605,  903,23091, 4663,21605,
-  903,23095, 4745,21605,  955,23099,    9,23099, 4569,21605,17423,21605,
-  955,23107,    9,23107,14625,21605, 5997,21605,    7,23114,    5,23114,
-    6,23119,23117,23121,    6,23118,    6,23114,    5,23126,    7,23115,
-23129,23131,23125,23131,   14,23114,23131,23137,    6,23115,   15,23114,
-23141,23143,20482,21605,20762,23146,20773,23149,20762,23147,20815,23153,
-20839,23147,21399,23147,19683,23147,20763,23147,20843,23163,23149,23163,
-20763,23146,20839,23169,23153,23169,20186,21605,21036,23174,21049,23177,
-21036,23175,21069,23181,  331,23175,   59,23175, 1325,23175,  265,23175,
-20644,21605,20352,21605, 9660,21605, 8386,21605,   59,23199,  331,23199,
- 1325,23199,  265,23199,21243,21605,21829,23209,20957,21605,21807,23213,
-21272,21605,21631,23217,20962,21605,    9,23221,21248,21605,21625,23225,
-21549,21605,20501,23228,21105,21605,20501,23232,20843,21605,21758,23237,
-21623,23237,21760,23237,21641,23237,20885,23237,21757,23246,20889,23247,
-21757,23237,20885,23252,    9,23252,20103,23236,    9,23259,    9,23237,
-21757,23262,20885,23236,    9,23267,21127,21605,21752,23271,21625,23271,
-21754,23271,21639,23271,18967,23270,21087,23281,21183,23271,21751,23284,
-21751,23271,21183,23288,    9,23288,20103,23270,21183,23295,    9,23295,
-    9,23271,21751,23300,21405,21605,21633,23305,21394,23305,21786,23305,
-21381,23305,20273,23312,21785,23312,20326,23305,21087,23305,21695,23305,
-21037,23305,21036,23304,23325,23327,21036,23305,21037,23304,23331,23333,
-21788,23305,21785,23305,21381,23338,    9,23338,    9,23305,20273,23344,
-21785,23344,20273,23305,21381,23350,    9,23350,21259,21605,21843,23357,
-20885,21605,20763,23360,    5,23363,18967,23362,    6,23360,18967,23368,
-18967,23360,    6,23372,    6,23373,    7,23360,23377,23379,    7,23361,
-23365,23383,    4,23383,23363,23387,23371,23383,23375,23383,23367,23383,
-21526,23360,23383,23397,    6,23361,21527,23360,23401,23403,    9,23361,
-20843,23407,21791,23361,20413,23411,20413,23360,21791,23415,20843,23360,
-    9,23419,21183,21605,21315,23422,21795,23425,21795,23423,20103,23429,
-20103,23422,21795,23433,20763,23422,21249,21605,21617,23439,21001,21605,
-    9,23443,21273,21605,21619,23447,21371,21605,    9,23451,21253,21605,
-    8,21604,22363,23457,22053,23457,21983,23457,23039,23457,21985,23457,
-22077,23457,22075,23457,22465,23457,22507,23457,23053,23457,23051,23457,
-20501,23457,23037,23457,19631,23483,11949,23483, 4669,23483,18967,23457,
-   10,21604,22870,23493,22869,23493,22867,23493,23041,23493,22583,23493,
-21995,23493,22665,23493,21991,23493,19441,23493,22626,23493,21997,23493,
-19656,23493,22908,23493,22902,23493,22419,23493,22421,23493,11970,23493,
- 4696,23493,21987,23493,23069,23493,21989,23493,23079,23493,22643,23493,
-22933,23493,22945,23493,22693,23493,22904,23493,    9,23546,22896,23493,
-18967,23550,22621,23493,    9,23554,19396,23493,22807,23558, 8647,23493,
-22637,23493,    9,23565,23077,23493,18967,23569,22689,23493,18967,23573,
-22927,23493,    9,23577,22943,23493,18967,23581,22807,23493,19396,23584,
-19396,23585,18967,23584,    9,23590,    9,23584,18967,23594,18967,23585,
-    9,23598,    9,23585,18967,23602,19631,23493,    9,23606,18967,23493,
-22896,23610,22807,23610,    9,23614,    9,23610,22807,23618,    9,23493,
-11949,23622, 4669,23622,22621,23622,19631,23622,22904,23622,22807,23622,
-18967,23634,18967,23622,22807,23638, 4669,23493,    9,23642,11949,23493,
-    9,23646,   16,21604,22979,23651,21935,23651,22239,23651,22389,23651,
-22375,23651,22001,23651,21999,23651,22005,23651,22003,23651,22123,23651,
-22129,23651,22983,23651,22981,23651,22987,23651,22985,23651,22989,23651,
-22995,23651,22993,23651,22991,23651,22169,23651,22029,23651,22027,23651,
-22175,23651,22031,23651,22189,23651,22195,23651,22033,23651,    7,23651,
-    3,23706,    3,23651,    7,23710,  586,23651,22957,23651,19545,23717,
-20357,23717,20497,23717,10099,23717, 4133,23717, 3799,23717, 9669,23717,
- 9179,23717, 4143,23717,19559,23651,20713,23651,20361,23651, 9967,23651,
- 9673,23651, 4283,23651, 3807,23651, 8251,23651, 4279,23651,   14,21604,
-23175,23755,23199,23755,    5,23755,    1,23760,22677,23763,23023,23763,
-    1,23755,    5,23768,22677,23771,23023,23771,16381,23755,14625,23755,
- 4569,23755,13325,23755, 8685,23755,19513,23755, 1369,23755,   17,23755,
-20219,23755, 4063,23755,10273,23755,20697,23755, 4137,23755, 8401,23755,
- 9955,23755, 3863,23755,19631,21605,   11,23808,    5,23810,    6,23808,
-    5,23814,    5,23808,    6,23818,    6,23819,    7,23808,23823,23825,
-    7,23809,23817,23829,23821,23829,23813,23829,   14,23808,23829,23837,
-    6,23809,   15,23808,23841,23843,    9,23808,23457,23847,    9,23809,
-19667,21605,    5,23852,    4,23852,   12,23852,   13,23853,23859,23861,
-   12,23853,   13,23852,23865,23867,    4,23853,23855,23871,    5,23853,
-23857,23875,    8,21605,23646,23879,23642,23879,23606,23879,23851,23879,
-22467,23879,22509,23879,19384,23879,19631,23879,23493,23894,23493,23879,
-11949,23898, 4669,23898,19631,23898,11949,23879,23493,23906, 4669,23879,
-23493,23910,18967,23879,   11,23914,   11,23915,23493,23919,   11,23879,
-18967,23922,   14,21605,18967,23926,20501,23929,   17,23929,18967,23927,
-20413,23935,   16,21605,22241,23939,22387,23939,22373,23939,22121,23939,
-22127,23939,22167,23939,22173,23939,22187,23939,22193,23939,19545,23939,
-10099,23939, 4133,23939, 3799,23939, 4143,23939, 9669,23939, 9179,23939,
-20357,23939,20497,23939,19625,23939,21549,23939,21105,23939,   11,21604,
-23053,23983,23051,23983,23039,23983,21985,23983,22085,23983,    5,23982,
-    6,23995,21983,23983,22077,23983,22075,23983,22081,23983,22083,23983,
-22572,23983,23847,23983,22465,23983,22507,23983,22211,23983,    9,24017,
-19396,23983,22567,23983,    9,24022, 8165,23983,    9,24027,23037,23983,
-11949,24031, 4669,24031,19631,24031,19559,23983,    9,24039, 8251,23983,
-    9,24043, 3807,23983,    9,24047, 9875,23983,    9,24051,20501,23983,
-    9,24055,    9,23982, 8251,24059, 3807,24059,22211,24059,19559,24059,
-20501,24059, 9875,24059, 8165,24059,    9,23983,22567,24074,18967,24074,
-18967,23983,21183,24081,23997,24081,  375,24081,    7,24081,23995,24089,
-    9,24080,    9,21604,22869,24095,23894,24095,21997,24095,21365,24095,
-21475,24095,21509,24095,21405,24094,22047,24095,22357,24095,23919,24095,
-21995,24095,22583,24095,23906,24095,23910,24095,21127,24094,22319,24125,
-20843,24094,22289,24129,22419,24095,22421,24095,21279,24095,  973,24094,
- 4745,24139,19559,24095,20361,24095,20713,24095, 9673,24095, 9967,24095,
- 4283,24095, 4279,24095, 8251,24095, 3807,24095,   33,24095, 7971,24161,
- 8165,24095,   25,24165, 9875,24095,20501,24095, 4745,24095,17423,24095,
-21405,24095,20273,24177,21785,24177,19631,24095,23879,24182, 4669,24095,
-23879,24186,11949,24095,23879,24190,  973,24095, 4805,24195,19687,24095,
-23493,24199,23879,24095,19631,24202,11949,24202, 4669,24202,20413,24095,
-   11,24094, 8251,24213, 3807,24213,22211,24213,19559,24213,20501,24213,
- 9875,24213, 8165,24213,21127,24095,21751,24229,20843,24095,21757,24233,
-   11,24095,19687,24237,23610,24237,23493,24237,18967,24242, 7971,24237,
-18967,24237,23493,24248,18967,24095,   10,24252,24213,24255,   10,24253,
-24237,24259,  483,24253,   10,21605,23893,24265,24020,24265,22581,24265,
-22669,24265,19455,24265,23917,24265,19333,24265,23073,24265,19393,24265,
-23060,24265,24092,24265,23925,24265,24078,24265,23651,24265, 9755,24265,
- 9317,24265, 4321,24265, 3833,24265,10171,24265, 4295,24265,22149,24265,
-18967,24307,24213,24265,18967,24311,24059,24265,18967,24315,21183,24265,
-19396,24265,23983,24320,19559,24321,  922,24265, 1413,24265,19683,24265,
-24074,24265,18967,24332,23055,24265,18967,24336,24080,24265,    9,24340,
-20839,24265,21399,24265,19385,24265,23879,24349,    9,24349,23983,24265,
-19396,24355,19396,24354,18967,24355,    9,24360,    9,24355,18967,24364,
-18967,24354,    9,24368,    9,24354,18967,24372,18967,24264,19441,24377,
-24213,24377,24059,24377,22149,24377,19656,24377,19631,24377,    9,24388,
-23983,24377,    9,24393,    9,24377,19631,24396,  903,24265,  483,24400,
-  483,24265,  903,24404,18967,24265,23055,24408,24074,24408,19559,24409,
-    9,24415,    9,24408,23983,24418,19559,24419,23983,24408,    9,24424,
-    9,24265,24080,24428,18967,24428,19559,24433,23983,24432,23983,24428,
-18967,24438,18967,24429,19631,24443,   17,21604,21963,24447,23958,24447,
-23972,24447,23974,24447,23960,24447,23962,24447,21979,24447,21977,24447,
-21967,24447,21965,24447,23964,24447,23966,24447,23968,24447,23970,24447,
-21971,24447,21969,24447,21975,24447,21973,24447,22807,24447,19545,24447,
-23939,24486,20357,24447,23939,24490,20497,24447,23939,24494, 9669,24447,
-23939,24498, 9179,24447,23939,24502, 3799,24447,23939,24506, 4143,24447,
-23939,24510,10099,24447,23939,24514, 4133,24447,23939,24518,23939,24447,
-19545,24522,20357,24522,20497,24522,10099,24522, 4133,24522, 3799,24522,
- 9669,24522, 9179,24522, 4143,24522,   15,24446,   15,21604,23357,24545,
-22713,24545,22423,24545, 8337,24545,20103,24545,   17,24544,  483,24545,
-   19,21605,22163,24561,18967,24560,   13,21605,24080,24567,22149,24567,
-23983,24567,18967,24572,18967,24567,23983,24576,  113,21605,10385,24581,
-23879,24583,    9,24583,11731,21605,   67,24589,23879,24591,    9,24591,
-  137,21605,12261,21605,  587,24599,10107,24601,11067,24601,12285,24601,
- 1346,21605, 1505,24609,  256,21605, 8495,24613,10107,24613, 1486,21605,
-  803,24619, 1504,21605,20029,24623,21103,24623,19781,24623,  973,21605,
- 2845,24631, 4812,24631,  955,24631, 4805,24636, 2971,24631, 4814,24631,
-    9,24631, 4805,24644, 4805,24631,  955,24648,    9,24648,  341,21605,
-  803,24655,17049,24655,20884,21605,21820,24661,21807,24661,20413,24664,
-20413,24661,21807,24668,21182,21605,21195,24673,21836,24673,21829,24673,
-20103,24678,20103,24673,21829,24682,20984,21605,20839,24687,20413,24689,
-20413,24686,20839,24693,21258,21605,23755,24697,21749,24697,21574,21605,
-    9,24703,21404,21605,24109,24707,21803,24707,21849,24707,21621,24707,
-21693,24707,21805,24707,21801,24707,21381,24721,    9,24721, 1141,21605,
-17025,24727, 1447,21605,17025,24731,  253,21605,17049,24735, 1471,21605,
-17049,24739,21018,21605,    5,24742,20839,24745,    5,24743,20885,24749,
-21276,21605,    7,24753,20413,21605,    6,24756,    4,24759,18967,24760,
-18967,24759,    4,24764,    4,24765,21314,24759,21570,24756,21571,24757,
-24773,24775,    6,24757,21314,24778,21314,24779,20885,24757,24661,24785,
-21571,24756,21570,24757,24789,24791,21315,24757,24783,24795,21381,24757,
-20885,24756,21791,24801,19475,24756,20984,24756,20839,24807,21315,24756,
-21747,24811,24781,24811,23457,24811,    5,24756,20762,24819,20762,24818,
-24763,24819,24767,24819,20839,24819,21399,24819,24771,24819,19683,24819,
-20763,24819,20843,24837,24823,24837,20763,24818,24821,24843,20839,24843,
-    5,24757,24769,24849,20885,24849,24661,24849,20763,24756,    5,24856,
-20839,24859,    5,24857,20885,24863,20103,21605,21183,24867,21127,24869,
-24673,24869,   15,24866,21183,24866,21795,24877,   15,24867,19687,24866,
-    9,24883,19625,24866,20843,24866,    9,24889,21549,24866,21127,24866,
-21183,24895,    9,24895,21105,24866,20763,24866,    5,24903,21527,24866,
-    9,24867,19687,24909,20843,24909,21127,24909,    6,24866,21036,24917,
-    5,24917,18967,24920,18967,24917,    5,24924,21036,24916,    5,24916,
-18967,24930,24881,24917,18967,24916,    5,24936,    7,24866,23755,24941,
- 1325,24941,  331,24941,   59,24941,  265,24941,    7,24867,23929,24953,
-22205,24953,24919,24953,24923,24953,24927,24953,24929,24953,24933,24953,
-24939,24953,24905,24953,    4,24953,24903,24973,22269,24953,22263,24953,
-  375,24953,21037,24953,24917,24983,    6,24867,    5,24986,24941,24989,
-24901,24987,24893,24987,24887,24987,21037,24866,24987,24999,    7,24999,
-20273,21605,21258,25004,21259,25005,25007,25009,21183,25005,21259,25004,
-21258,25005,25015,25017,  375,25005,    6,25004,    7,25004,    7,25005,
-25023,25027,21315,25027,    6,25005,25025,25033,20501,21605,    7,25036,
-    4,25039,    4,25038,20885,25037,    7,25037,18967,25047,    5,25049,
-    5,25048,    5,25047,18967,25054,    5,25046,21036,25047,21037,25037,
-22269,25063,21105,25063,   16,25036,   10,25037,  803,25037,  903,25037,
-    9,25037,   17,25036,19625,25036,21105,25036,21549,25036,21037,25036,
-21829,25087,25059,25087,21127,25087,24095,25087,25071,25087,   11,25037,
-    4,25036,    7,25100,25051,25101,    5,25036,25041,25107,18967,25106,
-25099,25111,    5,25037,25103,25115,25043,25115,25087,25115,    7,25114,
-25087,25123,25069,25115,    4,25037,25111,25129,25057,25129,25053,25129,
-25061,25129,25079,25129, 9165,21605, 9168,25140, 9169,25141,25143,25145,
- 9169,25140, 9168,25141,25149,25151, 8337,21605,   15,25155,    6,25155,
-    5,25158,    7,25155,  375,25163,    6,25154,25157,25167,    7,25154,
-25161,25171,23755,25171,   59,25171,  331,25171, 1325,25171,  265,25171,
- 9617,21605, 9630,25184, 9631,25185,25187,25189, 9629,25185, 9631,25184,
- 9630,25185,25195,25197,  375,25185,    6,25185,    7,25185,    6,25184,
-25205,25207,    7,25184,25203,25211, 9875,21605,    7,25214,    4,25216,
-    4,25217, 9893,25215,   16,25214,  803,25215,    9,25215,   17,25214,
-  903,25215,    4,25215,25231,25235,    5,25215,25219,25239,25225,25239,
-    4,25214,    7,25244,25239,25247,    5,25214,25221,25251,  843,21605,
-    9,25255,  413,21605,    7,25259,  375,25259, 1530,21605,    9,25265,
- 1216,21605,    7,25269,21497,21605,    7,25273,21277,21605,    7,25276,
-21183,25279,    7,25277,21105,25283,21019,21605,    5,25286,20885,25289,
-    5,25287,20839,25293,  265,21605,    7,25297, 7971,25299,  587,21605,
-   11,25302,    9,25305,    9,25303,   11,25309,    5,25303,20501,25313,
- 9875,25313,  903,21605,    9,25319,   11,25321,   11,25318,    9,25325,
-    7,25319, 1141,25329,   33,25329, 1447,25329, 1011,25318,    7,25337,
- 1275,21605,    9,25341, 1369,25343,   17,25340,  903,25347,    5,25340,
- 1505,25351,    5,25341,  253,25355,   53,25355, 1471,25355, 1369,25340,
-    9,25363, 1011,21605,    7,25367,  959,25369,   47,25369,  759,25369,
-  903,25366,    7,25377, 1369,21605, 9929,25380, 9927,25383,11759,25380,
- 7971,25387,17053,25381,10081,25391,    7,25380,    4,25394,    5,25395,
-    7,25398,25381,25401,    0,25398,25403,25405,    4,25395,    0,25395,
-    5,25410,    1,25380,    5,25415,    1,25416,25381,25419,    6,25416,
-25421,25423,    6,25415,    5,25426,   14,25415,   10,25380,    5,25433,
-    0,25434,    0,25433,    5,25438,   16,25380,10081,25380, 7971,25445,
-17053,25445, 7971,25381,11759,25451,10081,25451,   17,25380,   11,25380,
-   11,25381, 1965,25461, 3195,25461,25437,25461,25441,25461, 5197,25461,
-25405,25461,25413,25461,    1,25461, 4579,25461,15899,25461,   15,25380,
-23763,25483,23771,25483, 3755,25483, 1995,25483,    0,25483,25461,25493,
-25477,25483, 4917,25483,17013,25483,    4,25380,    7,25502,20029,25503,
-19781,25503,21103,25503,    5,25380,25409,25513,  803,25513,    4,25381,
-20033,25519,25457,25519,    5,25381,25397,25525,25505,25525,25443,25525,
-10219,25525,  959,25525,   47,25525,  759,25525, 1275,25380,    9,25541,
-  241,21605,    9,25545,  483,25545,    7,25544, 8495,25551,10107,25551,
-17571,21605,    7,25557,    4,25558,    4,25559,   16,25557,   17,25557,
-    4,25556,25567,25569,    5,25556,25561,25573,25565,25573,    4,25557,
-    7,25578,25573,25581,    5,25557,25563,25585,17371,21605,16711,25589,
-    7,25589,14315,21605,    5,25594,    6,25596,    6,25597,   14,25594,
-   15,25594,    6,25594,    5,25606,    7,25594,25601,25611,    6,25595,
-25605,25615,    7,25595,25609,25619,25599,25619,25603,25619,15705,21605,
-  767,25627,  483,25629,    4,25627,  483,25633,21527,21605,20103,25636,
-    5,25637,   17,25641,    5,25636,    9,25645,21315,21605,21183,25648,
-21795,25651,21183,25649,24673,25655,21747,25649,20413,25659,23457,25649,
-20413,25663,20413,25648,23457,25667,21747,25667,21037,21605,21829,25673,
-20501,25675,21127,25673,20501,25679,21105,25673,   11,25673,20501,25685,
-   15,25673,20501,25672,24095,25691,21829,25691,21127,25691,20187,25672,
-24095,25673,20501,25701,    6,25673,    7,25673,    6,25672,25707,25709,
-20103,25709,    7,25672,21749,25715,23755,25715,25705,25715,20103,25672,
-    7,25723,20763,21605,20482,25726,20839,25729,20483,25726,21183,25726,
-    4,25727,23147,25737,24819,25737,    5,25727,23383,25743,20956,25743,
-20773,25743,24953,25743,20885,25743,20413,25752,20413,25743,20885,25756,
-    4,25726,21605,25761,    7,25763,25743,25765,24849,25761,20413,25761,
-    5,25726,20839,25773,20413,25775,20413,25772,20839,25779,20413,25726,
-    5,25782,20839,25785,    5,25783,20885,25789,    5,21604,25275,25793,
-25003,25793,25725,25793,24755,25793,21049,25793,21242,25793,20773,25793,
-20956,25793,25699,25793,22725,25793,22391,25793,24682,25793,23209,25793,
-25712,25793,25733,25793,22711,25793,22395,25793,24668,25793,23213,25793,
-25770,25793,25083,25793,23235,25793,22017,25793,25085,25793,23231,25793,
-22025,25793,25087,25793,25691,25793,22357,25793,22047,25793,23455,25793,
-15567,25793,12971,25793,13355,25793,13541,25793,22869,25793,22635,25793,
-23021,25793,23894,25793,23919,25793,21997,25793,21995,25793,22583,25793,
-23906,25793,23910,25793,22419,25793,22421,25793,23034,25793,19656,25793,
-19441,25793,11970,25793, 4696,25793,22674,25793,22069,25793,25081,25793,
-22011,25793, 9357,25793,25205,25793,25027,25793, 9356,25793,25171,25793,
-24941,25793,23199,25793,23175,25793,20606,25793,25593,25793,19396,25793,
-11131,25793,21059,25793,23018,25793,20501,25933,20057,25793,22633,25793,
-20501,25939,21405,25793,  357,25793,  367,25793,  471,25793, 1249,25793,
-  628,25793, 4569,25793,14625,25793, 4545,25793,13325,25793, 8337,25961,
- 4549,25793,23229,25793,20501,25967,23233,25793,20501,25971,25706,25793,
-20186,25793, 8386,25793, 9083,25793, 9484,25793, 9984,25793,20187,25793,
- 8387,25793,19513,25793, 8401,25793,20219,25793, 4137,25793,10273,25793,
- 4063,25793, 3863,25793,20697,25793, 9955,25793,20353,25793,25709,25793,
-20103,26010,25715,25793,24673,25793,20103,26016,24697,25793,21183,25793,
-20103,26022,21259,25793, 4745,25793,17423,25793, 9082,25793,22673,25793,
-20413,26034,23033,25793,20413,26038,25551,25793,24613,25793,22249,25793,
-20326,25793,21087,25793, 9704,25793,23879,25793,19631,26054,11949,26054,
- 4669,26054,11949,25793,23879,26062,    9,26062, 4669,25793,23879,26068,
-    9,26068,20805,25793,23015,25793,18967,26076,20501,26079,18967,26077,
-20413,26083,19631,25793,23879,26086,    9,26086, 9377,25793,   11,26092,
-  341,25793,  241,26097, 8165,25793,  256,25793,  257,25793,   11,25793,
- 9195,26106,20501,26106,  587,26106, 9377,26106, 9875,26106,20763,26106,
-20804,25793,10219,25793,  587,26123,   53,25793,20501,25793,   10,26128,
-   10,26129,   11,26128,26133,26135,   11,26129,26131,26139,20413,25793,
-20885,26142,24661,26142,25761,26142,22673,26142,23033,26142,20762,25793,
-25761,25793,20413,26156,24661,25793,20413,26160,20885,25793,20413,26164,
-   17,25793,20762,26168,20762,26169,20763,26169,26171,26175,20763,26168,
-26173,26179,    9,25793,11949,26182, 4669,26182,19631,26182,18967,26182,
-20273,26182, 9617,26182,20763,25793,   11,26196,25707,25793, 9875,25793,
-   10,26202,   10,26203,   11,26202,26207,26209,   11,26203,26205,26213,
-  253,25793,    6,25793,25273,26219,24753,26219,24999,26219,24953,26219,
-25005,26219,25723,26219,25707,26219,25185,26219,25163,26219,25589,26219,
-24081,26219, 4713,26219,16363,26219, 9195,26219, 4863,26219,13119,26219,
- 8757,26219, 4213,26219,23493,26219, 8109,26219, 3933,26219, 4147,26219,
- 9335,26219,20103,26219, 8337,26219,20273,26219, 8997,26219,25673,26219,
-  241,26219,18967,26219,   11,26279,   11,26219,  587,26219, 8387,26219,
-14653,26219,20187,26219,    7,25793, 8717,26293, 3785,26293,25673,26292,
-23755,26293,10351,26293, 4311,26293, 4329,26293,10055,26293,20103,26292,
- 8337,26292, 8997,26292,   15,26293,18967,26317,18967,26292,  241,26292,
- 9195,25793,   11,26324, 1471,25793,    6,25792,23175,26331,25977,26331,
-24941,26331,26311,26331,26299,26331,25975,26331,25715,26331,24697,26331,
-26315,26331,23199,26331,25171,26331,25979,26331,26033,26331,26313,26331,
-16381,26331,26323,26331,26103,26331,13325,26331, 8685,26331,26155,26331,
-26321,26331,26293,26331,20103,26375,25673,26375, 8997,26375, 8337,26375,
-  241,26375,18967,26375,   17,26331, 1369,26331, 4569,26331,19513,26331,
- 4063,26331,10273,26331, 3863,26331,20697,26331, 9955,26331, 4137,26331,
-20219,26331, 8401,26331,14625,26331,    7,25792,25987,26415,26266,26415,
-26201,26415,26274,26415,26272,26415,25989,26415,25981,26415,26268,26415,
-21604,26415,18967,26433,26219,26435, 8997,26415,26219,26438,26105,26415,
-26276,26415, 8647,26415,19396,26415,26197,26415,26278,26415,26219,26415,
-20103,26454,25673,26454, 8997,26454, 8337,26454,  241,26454,18967,26454,
- 8337,26415,26219,26468,20103,26415,26219,26472,    9,26415,18967,26476,
-  241,26415,    1,26481,26219,26483,26219,26480,25673,26415,26219,26488,
-18967,26415,    9,26492,26219,26492,  587,25793,   11,26498, 1369,25793,
-25673,25793,20501,26505,    6,26504,    7,26504,26331,26511,    6,26505,
-26511,26515,    7,26505,26509,26519,26219,26519,18967,25793,    9,26524,
-23015,26524,20501,26529,  483,26525,    6,26524,    7,26524,26331,26537,
-    7,26525,26219,26541,    6,26525,  241,25793,    1,26547,    7,26549,
-26331,26551,    7,26548,26219,26555,    7,26547,    1,26558,26219,26561,
-26219,26559,    7,26546,26331,26567,20273,25793,    9,26570,14315,25793,
- 8997,25793,    7,26576,26331,26579,    7,26577,26219,26583, 9617,25793,
-    9,26586, 8337,25793,    7,26590,26331,26593,  483,26591,    9,26591,
-    7,26591,26219,26601,20103,25793,21183,26604,24673,26604,25709,26604,
-    7,26604,26331,26613,  483,26605,    9,26605,    7,26605,26219,26621,
-    4,21604,21955,26625,24877,26625,23433,26625,21947,26625,21951,26625,
-24801,26625,23415,26625,21943,26625,22282,26625,22251,26625,22266,26625,
-22253,26625,24811,26625,25667,26625,22363,26625,22053,26625,21116,26625,
-21560,26625,25735,26625,23437,26625,22699,26625,21253,26625,23930,26625,
-22206,26625,24805,26625,23937,26625,22587,26625,23039,26625,23053,26625,
-23051,26625,21961,26625,21981,26625,20465,26625,20576,26625,21985,26625,
-21983,26625,22077,26625,22075,26625, 9573,26625, 9575,26625,23847,26625,
-22465,26625,22507,26625,    3,26625,    7,26712, 9605,26625,  586,26625,
- 9599,26625,19474,26625,20413,26723,20186,26625,20805,26625,22423,26625,
-22713,26625,22205,26625,20501,26734,19625,26625,20501,26738,19687,26625,
-23929,26625,20501,26744,23934,26625,20413,26749,22585,26625,20413,26753,
- 8386,26625,23927,26625,18967,26759,20501,26761,18967,26758,20413,26765,
-23037,26625,19631,26769,11949,26769, 4669,26769, 1418,26625, 9565,26777,
-  669,26625, 9565,26781,22263,26625,20501,26784,22269,26625,20501,26788,
-21549,26625,20501,26792,20843,26625,21105,26625,20501,26798,21127,26625,
-23423,26625,20103,26805,23357,26625, 7971,26625, 1170,26625,25203,26813,
-20501,26625,22269,26816,22263,26816,21105,26816,21549,26816,22205,26816,
-23929,26816,19625,26816,20762,26625,26219,26833,23361,26625,20413,26837,
-   11,26625,    1,26841,18967,26841,   15,26625,18967,26846,20413,26849,
-18967,26847,20501,26853, 1369,26846, 9565,26857,    7,26625,    4,26861,
-    3,26860,    4,26860,21605,26867,20103,26860, 8337,26860,18967,26860,
-26219,26875, 1011,26860,25203,26879,    6,26625,21604,26882,20763,26883,
-    6,26624,24811,26889,22053,26889,22363,26889,25667,26889,20501,26889,
-25649,26889,20413,26901,18967,26889,    7,26624,24265,26907,19559,26907,
- 9673,26907, 8251,26907, 3807,26907, 4283,26907,20361,26907, 4279,26907,
-20713,26907, 9967,26907,  483,26625, 1369,26625,   15,26930, 9565,26933,
-25649,26625,20413,26937,18967,26625,   15,26940,20413,26943,23927,26940,
-20413,26947,    6,26940,21604,26950,    7,26940,26219,26955,    7,26941,
-26953,26959,26885,26959,26331,26959,23755,26959,    6,26941, 1011,26625,
-    7,26971,25207,26973,23197,26973,    7,26970,25203,26979,20103,26625,
-    7,26982, 8337,26625,    7,26986, 9565,26625, 9617,26625,    6,26992,
-    7,26992,    6,26993,26997,26999,    7,26993,26995,27003,20273,26625,
-    6,27006,    7,27006,    6,27007,27011,27013,    7,27007,27009,27017,
-    7,21604,25987,27021,26266,27021,22732,27021,22733,27021,25087,27021,
-25691,27021,22357,27021,22047,27021,26027,27021,25989,27021,26268,27021,
-20819,27021,20152,27021, 8374,27021, 8389,27021,20201,27021,20952,27021,
-    1,27021,    4,27056,    4,27057,    3,27021,    4,27062,  902,27021,
-19559,27021,20361,27021, 9673,27021,20713,27021, 9967,27021, 4283,27021,
- 4279,27021, 8251,27021, 3807,27021,26100,27021,26106,27021,26128,27021,
-26202,27021, 8647,27021,20326,27021,25239,27021,25115,27021, 8800,27021,
-21087,27021,  357,27021,  367,27021,  471,27021, 1249,27021, 8086,27021,
-19687,27021, 9704,27021,25742,27021,20885,27021,  483,27122, 1141,27021,
-  375,27021,20103,27128, 8337,27128,25673,27021,20501,27135,26219,27021,
-20103,27138, 8337,27138,   11,27139,   17,27139, 1447,27021,21127,27021,
-20843,27021, 8165,27021,25793,27154,  265,27155,   33,27021,  567,27021,
-22729,27021,21315,27164,   11,27021,25793,27169, 8495,27169,25793,27168,
- 8495,27168,18967,27169,21037,27169,21497,27021,21277,27021,21276,27021,
-21496,27021,20273,27021,    9,27190,21315,27190,20103,27021,26219,27196,
-  375,27196,21037,27196,21314,27021,22729,27205,20273,27205,21036,27021,
-25129,27211,20103,27211,21183,27021,    9,27021,20273,27218, 9617,27218,
-21315,27021,22729,27224,20273,27224,21037,27021,20103,27230,25743,27021,
-   25,27021, 7971,27236, 7971,27021,   25,27240, 9617,27021,    9,27244,
- 8337,27021,26219,27248,  375,27248,    4,27021,25037,27255,25215,27255,
-    3,27254,    1,27254,25727,27255,  483,27255,20691,27255, 9923,27255,
-18967,27255,20103,27273,18967,27254,22729,27277,20273,27277,    5,27021,
-27061,27283,    1,27283,25727,27282,18967,27283,22729,27291,20273,27291,
-   17,27283,18967,27297,18967,27282,25129,27301,20103,27301,25793,27021,
- 8165,27306,   11,27306,20501,27306, 9875,27306, 9731,27021, 8495,27021,
-   11,27318,    4,27020,    1,27323,27283,27324,27286,27323,27289,27323,
-27121,27323,24265,27323,27225,27323,27290,27323,27211,27323,27301,27323,
-27283,27323,    1,27344,25727,27345,18967,27344,18967,27345,19559,27323,
-18967,27323,27283,27356, 4283,27323, 9673,27323, 8251,27323, 3807,27323,
-20361,27323, 9967,27323,20713,27323, 4279,27323,    5,27020,27059,27377,
-27263,27377,27235,27377,27264,27377, 8647,27377,19396,27377,27231,27377,
-27272,27377,27205,27377,27277,27377,27255,27377,    1,27399,25727,27398,
-18967,27398,18967,27399,26219,27377,    9,27377,18967,27410,25727,27377,
-27255,27414,18967,27377,    9,27418,27255,27418, 1011,27021,25727,27021,
-    5,27426,27323,27429,    5,27427,27255,27433,18967,27021,    7,27437,
-21605,27439,    4,27441,    4,27440,    4,27439,21605,27446,    4,27438,
-   16,27437,  113,27437,11731,27437,   17,27437,    4,27436,22729,27461,
-21605,27460,27459,27465,27377,27461,20273,27461,    5,27436,25129,27473,
-27443,27473,27323,27473,20103,27473,    5,27437,25101,27483,23193,27483,
-    7,27483,21605,27489,27461,27491,27449,27483,27445,27483,27461,27483,
-27255,27483,21315,27483,    4,27437,    7,27504,27473,27505,27283,27505,
-21037,27505,  483,27021,20885,27514,20501,27021,  241,27519,25793,27518,
- 9875,27021,  241,27525,25793,27524,20413,27021,    6,21604,24811,27533,
-25667,27533,22363,27533,22053,27533,    1,27533,    5,27542,22605,27545,
-22677,27545,23023,27545,25483,27545,20644,27533,21359,27533,25793,27557,
-12345,27533,    5,27561,    4,27560,27563,27565,    4,27561,    5,27560,
-27569,27571, 5123,27533,    5,27575,    4,27574,27577,27579,    4,27575,
-    5,27574,27583,27585,19667,27533,    5,27589,    4,27588,27591,27593,
-    4,27589,    5,27588,27597,27599,  341,27533,21052,27533,25793,27605,
-25649,27533,20413,27609,25673,27533,21183,27613,26861,27533,    9,27617,
-26293,27533,    9,27621,17219,27533,  903,27625, 4663,27533,  903,27629,
-23195,27533,21315,27633,10219,27533,  903,27637,   53,27533,25025,27533,
-21315,27643,20103,27533,    9,27647,21314,27533,24795,27651,26142,27651,
-20413,27651,25793,27656,25793,27651,20413,27660,21036,27533,25129,27665,
-21259,27533,26625,27669,   17,27533,21315,27673,21037,27533,25793,27677,
-20501,27679,20501,27676,25793,27683, 8337,27533,    9,27687, 1471,27533,
-    5,27533,    6,27693,  587,27695,21605,27697,    1,27692,22605,27701,
-22677,27701,23023,27701,25483,27701,27699,27701,    6,27692,25380,27713,
-27701,27715, 1369,27713,21605,27718,27701,27721,21605,27713, 1369,27724,
-27701,27727,    9,27693,18967,27692,25129,27733, 9935,27693,20645,27693,
-    4,27533,20501,27740,26524,27741,20501,27745,25793,27741,18967,27748,
-20501,27751,18967,27749,20413,27755,18967,27741,25793,27758,20501,27761,
-20501,27759,25793,27765,18967,27740,26142,27769,20413,27769,25793,27772,
-25793,27769,20413,27776,26940,27533,26969,27781,  253,27533,    4,27532,
-24811,27787,22053,27787,22363,27787,25667,27787,20501,27787,25649,27787,
-20413,27799,18967,27787,    5,27532,24941,27805,23175,27805,25715,27805,
-24697,27805,25171,27805,23199,27805,26959,27805,16381,27805,13325,27805,
- 8685,27805,26293,27805,   17,27805, 1369,27805, 4569,27805,19513,27805,
- 4063,27805,10273,27805, 4137,27805,20219,27805, 8401,27805, 3863,27805,
-14625,27805,20697,27805, 9955,27805,  241,27533,18967,27533,20486,27857,
-20487,27857,20413,27857,    4,27862,    4,27863,  580,27857,  483,27857,
-    4,27870,    4,27871,  581,27857,    4,27856,27861,27879,26142,27879,
-27877,27879,20413,27879,25793,27886,25793,27879,20413,27890,    5,27856,
-25129,27895,27859,27895,27865,27895,27869,27895,27873,27895,    5,27857,
-25101,27907,27555,27907,23193,27907,27743,27907,27886,27907,27867,27907,
-27875,27907,20413,27907,27879,27922,27879,27907,20413,27926,    4,27857,
-20413,27930,27895,27933,  483,27930,27895,27937,27895,27931,20413,27941,
- 1369,27533,    5,27945,20501,27533,21037,27949,    4,27948,27907,27953,
-    5,27948,18967,27956,21037,27948,25793,27961,    4,27949,27959,27965,
-27665,27965,27733,27965,27895,27965,    5,27949,27961,27975,    7,21605,
-    1,27979,    2,27981,    5,27983,    5,27982, 1010,27981,    5,27981,
-    2,27990,    3,27978,    9,27995, 4311,27979,10351,27979, 4329,27979,
- 3785,27979,10055,27979, 8717,27979,26283,27979,26388,27979,23790,27979,
-27828,27979,22143,27979,22149,27979,24213,27979,24059,27979,  331,27979,
- 8337,28027,20103,28027,21036,27978,21049,28033,21242,28033,21183,28033,
-20103,28038,20103,28033,21183,28042,26331,27979,20103,28047, 8337,28047,
-   17,28046,21277,27978,21183,28055,27693,27979,18967,28059,25793,27979,
-21127,28063,20843,28063,19687,28063, 8337,28063,20103,28063, 7971,28063,
-  241,28063, 8495,27979,  241,28079, 8337,27978,26331,28083,27805,28083,
- 1325,28083,  331,28083,   59,28083,23755,28083,25793,28083,  265,28083,
-21037,27979,27665,28101,28033,28101,   11,28101,21315,27979, 1325,27979,
- 8337,28111,20103,28111,   59,27979, 8337,28117,20103,28117,10291,27979,
-  483,28123,20273,27978,27533,28127,21315,28129,20103,27978,26331,28133,
-27805,28133,23755,28133,  331,28133, 1325,28133,   59,28133,25793,28133,
-  265,28133,21105,27979,   11,27979,20103,28153, 8337,28153,   17,27979,
-26331,28158, 8337,28159,20103,28159,27805,28158,23755,28158,27731,27979,
-27692,27979,    9,28173,23755,27979,20103,28177, 8337,28177,   17,28176,
-23983,27979,    9,28185,   15,27979,    3,28189,20273,28189, 9617,28189,
-27805,27979,20103,28197, 8337,28197,   17,28196,  241,27978,25793,28205,
- 8495,28205,10107,28205,  265,27979,20103,28213, 8337,28213,    4,27978,
-27985,28219,21105,28219,21549,28219,19625,28219,28173,28219,18967,28229,
-    5,27978,19397,28233,28060,28233,18966,28232,18966,28233,    9,28241,
-27323,28233,23651,28233,26907,28233, 9755,28233, 9317,28233, 4321,28233,
- 3833,28233,10171,28233, 4295,28233,28101,28233,21183,28233, 1413,28233,
-  922,28233,27856,28233,28059,28233,18967,28272,19396,28233,28239,28277,
-19683,28233,18967,28232,28235,28283,28242,28283,28241,28283,    9,28288,
-    9,28283,28241,28292,27533,28233,18967,28296,    9,28233,18967,28300,
-28239,28303,18967,28301,28241,28307,21399,28233,20839,28233,  483,28233,
-  903,28314,  903,28233,  483,28318,18967,28233,28059,28322,28239,28323,
-    9,28327,27533,28322,    9,28322,28239,28333,    4,27979,27987,28337,
-27993,28337,28270,28337,28330,28337,28298,28337,27989,28337,  586,28337,
-    3,28337,    7,28352,    7,28337,    3,28356,27856,28337,28233,28360,
-21575,28337,28296,28337,18967,28366,27533,28337,28322,28370,18967,28370,
-28233,28374,28233,28370,18967,28378,28322,28337,27533,28382,18967,28337,
-28296,28386,27533,28386,28233,28390,28233,28386,27533,28394,28233,28337,
-27856,28398,27533,28398,18967,28402,18967,28398,27533,28406,    5,27979,
-27255,28411, 9287,28411,20885,28411,27533,28410,28219,28419,18967,28421,
-    9,28419,  241,28411,  483,28427,28219,28411,27856,28431,27533,28431,
-18967,28434,18967,28431,27533,28438,18967,28410,28219,28443,   17,28443,
-21036,27979,21069,28449,21267,28449,21305,28449,28219,28449,21259,28449,
-20103,28459,   17,28449,21037,27978,26331,28465,21749,28465,27805,28465,
-23755,28465,28449,28465,25793,28465,10001,27979,    9,28479,27533,27979,
-21496,28483,21277,28483,20885,28483,27931,28483,    9,28483, 9731,28483,
-21037,28482,21037,28483,21315,28483,20273,28500,21036,28482,28499,28505,
-21036,28483,28497,28509,20273,28483,21315,28512,    4,28483,    5,28483,
-28386,28519,28337,28519,18967,28522,18967,28519,28337,28526,   17,28519,
-    4,28482,28519,28533,    5,28482,28517,28537,28219,28537,18967,28541,
-    9,28537, 1275,27979,20031,28547,20885,28547,    5,28547,18967,27979,
-20103,28555,    5,28555,28337,28559,    9,28559,    5,28554,28219,28565,
-   17,28565,21527,27979,18967,27978,28519,28573,    7,28573,    4,28576,
-    4,28577,28553,28573,21605,28573,    5,28584,28581,28587,    5,28585,
-28579,28591,   16,28573,28591,28595,   11,28573,20273,28573,  567,28573,
-    5,28572,    4,28573,    7,28606,28591,28609,28483,28607,28547,28607,
-  483,28607,    5,28573,21605,28618,28581,28621,20762,21605,20803,28625,
-    7,28625,    4,28628,25743,28631,    4,28629,24687,28635,25773,28635,
-21035,28625,   16,28625,25743,28643,20999,28625,20985,28625,  483,28649,
-   11,28625,20273,28625,  567,28625,    4,28624,20985,28659,    5,28624,
-20956,28663,20773,28663,20885,28663,20413,28668,20413,28663,20885,28672,
-20482,28625,20839,28677,    4,28625,    7,28680,25743,28683,20843,28681,
-  483,28681,    5,28625,21605,28690,28635,28693,20839,28691,20413,28697,
-20413,28690,20839,28701,20413,28625,    5,28705,20885,28707,    5,28704,
-20839,28711,    5,21605,21183,28715,18967,28716,24673,28719,21194,28715,
-24673,28723,28573,28714,28581,28727,20620,28714,20621,28714, 9994,28714,
- 9995,28714,    1,28715,    1,28714,26781,28741,  668,28741,26625,28745,
-26777,28741, 1419,28741,26625,28751,26857,28741,26933,28741,    2,28741,
-    9,28741,  587,28760,26625,28763,  587,28741,    9,28766,26625,28769,
-21018,28714,20839,28773,19396,28715,22579,28777,21611,28777,19683,28715,
-20413,28783,23490,28715,20413,28787,21526,28714,26816,28791,24953,28791,
-   17,28791,20501,28791,26625,28798,26625,28791,20501,28802,20762,28714,
-20773,28807,20956,28807,20885,28807,20413,28812,20413,28807,20885,28816,
-27787,28715,18967,28821,20501,28823,18967,28820,20413,28827,27802,28715,
-20413,28831,21019,28714,20885,28835,27856,28715,20413,28839,27931,28715,
-20413,28843,26904,28715,20413,28847,26861,28715,18967,28851,20823,28715,
-20645,28715, 9935,28715,21362,28715,21376,28715,27533,28715,18967,28865,
-20501,28867,18967,28864,20413,28871, 9994,28715,28737,28875,20822,28715,
-28807,28879,20763,28715,28835,28883,28816,28883,20866,28883,21021,28883,
-20413,28883,28807,28892,20843,28892,28807,28883,20413,28898,    9,28899,
-20843,28883,20413,28904,    9,28882,28807,28909,  803,28715,   11,28913,
-27979,28715,18967,28917,20621,28715,28731,28921,20413,28714,21399,28925,
-20839,28925,25737,28925,19683,28925,20763,28925,20843,28935,28807,28935,
-20763,28924,20839,28941,25737,28715,20413,28945,20839,28715,20413,28949,
-20620,28715,28733,28953,21399,28715,20413,28957,  483,28715,21315,28960,
-26860,28715,28337,28715,   11,28967,23457,28715,18967,28970,20413,28973,
-18967,28971,20501,28977,    9,28715,21315,28980,20763,28981,20763,28980,
-28807,28987,   17,28715,11949,28991, 4669,28991,19631,28991,18967,28991,
-20273,28991, 9617,28991, 9995,28715,28735,29005, 1275,28714, 1505,29009,
-26889,28715,18967,29012,20413,29015,18967,29013,20501,29019, 1369,28714,
-  803,29023,  587,28715, 1505,28715,    6,28714,26940,29031,20413,29033,
-28965,29031,18967,29037,18967,29030,26816,29041,24953,29041,   17,29041,
-20501,29041,26625,29048,26625,29041,20501,29052,26625,29031,18967,29056,
-20413,29059,18967,29057,20501,29063,18967,29031,20413,29067,26625,29069,
-26625,29066,20413,29073,    7,28714,19397,29077,    0,29077,    2,29080,
-28991,29083,    2,29077,    0,29087,    0,29086,28991,29091,28999,29077,
-    1,29076,29091,29097,29083,29097,29081,29097,    2,29103,    1,29077,
-29089,29107,    2,29107,28852,29077,    0,29076,    2,29115,29107,29116,
-29110,29115,29107,29115,    2,29122,18966,29076,18966,29077,29097,29129,
-28991,29129,    9,29129,27323,29077,23651,29077,26907,29077, 9755,29077,
- 9317,29077, 4321,29077, 3833,29077,10171,29077, 4295,29077,21183,29077,
- 1413,29077,  922,29077,26940,29077,28851,29077,18967,29162,19396,29077,
-29127,29167,19683,29077,18967,29076,29079,29173,29134,29173,29129,29173,
-    9,29178,    9,29173,29129,29182,26625,29077,18967,29186,21399,29077,
-    9,29077,18967,29192,29127,29195,18967,29193,29129,29199,20839,29077,
-  483,29077,  903,29204,  903,29077,  483,29208,18967,29077,29115,29213,
-28851,29212,29127,29213,    9,29219,26625,29212,    9,29212,29127,29225,
-    6,28715,29083,29229,29097,29230,29091,29229,29097,29234,29098,29229,
-29100,29229,29105,29229,29109,29229,29119,29229,29121,29229,29125,29229,
-29111,29229,29115,29253,24907,29229,25639,29229,22369,29229,28600,29229,
-28557,29229,28654,29229,22057,29229,29178,29229,29160,29229,19706,29229,
-10737,29229,10475,29229,10979,29229,19597,29229,12137,29229,29219,29229,
-29215,29229,29130,29229,29222,29229,29129,29229,29173,29294,29097,29294,
-29188,29229,29097,29229,29091,29302,29083,29302,29129,29302,    1,29229,
-    5,29310,    5,29229,    1,29314,29173,29229,29129,29318,19687,29229,
-19631,29322,26940,29229,29077,29326,10697,29229, 8165,29331,19631,29229,
-19687,29334,21575,29229,20273,29229,28573,29340,28625,29340,29186,29229,
-18967,29346,19384,29229,19559,29351,28625,29229,20273,29354,28573,29229,
-20273,29358,   11,29229,18967,29362,19559,29365,18967,29363,19631,29369,
-  587,29229,21605,29373,29313,29375,29317,29375,26625,29229,29212,29380,
-18967,29380,29077,29384,29077,29380,18967,29388,29212,29229,29127,29393,
-29115,29393,26625,29392,18967,29229,29186,29400,29077,29401,29173,29405,
-29097,29405,26625,29400,29077,29410,   11,29401,19687,29415,   11,29400,
-19559,29419,29077,29400,29127,29423,26625,29422,29115,29423,29077,29229,
-26940,29430,26625,29430,18967,29434,18967,29430,29127,29439,26625,29438,
-29115,29439,18967,29431,29129,29447,    7,28715,28791,29451,29041,29451,
-19625,29451,21549,29451,21105,29451,26625,29450,29031,29463,18967,29465,
- 1275,29451,  903,29469,29031,29451,26940,29473,26625,29473,18967,29476,
-18967,29473,26625,29480,20763,28714,28635,29485,28855,29485,20839,29485,
-20413,29491,20413,29484,20839,29495,    9,29485,20762,28715,28941,29501,
-29495,29501,28773,29501,20815,29501,20993,29501,21027,29501,28985,29501,
-29498,29501,29485,29501,20413,29519,    9,29518,20985,29501,20413,29525,
-    9,29501,29485,29528,21527,28714,29229,29533,    9,29533,26940,28715,
-20413,29539, 9731,28715,    7,29543,26625,28715,20762,29547,    6,29547,
-    7,29547,29400,29553,29229,29553,18967,29556,18967,29552,18967,29553,
-29229,29562,    6,29546,29553,29567,    7,29546,29551,29571,29031,29571,
-18967,29575,18967,29546,20413,29579,18967,29547,20501,29583,    6,29582,
-    7,29582,    6,29583,29589,29591,    7,29583,29587,29595,  903,28715,
-    7,29599,18967,28715,21183,29602,24673,29605,21183,29603,21795,29609,
-23457,29602,20413,29613,27787,29602,20413,29617,27533,29602,20413,29621,
-20413,29603,27787,29625,26889,29625,26625,29625,27533,29625,23457,29625,
-26889,29602,20413,29637,26625,29602,20413,29641,21315,28715,21183,29645,
-24673,29645,25709,29645,    7,29645,  483,29644,    9,29644,18967,28714,
-27965,29659,27948,29659,26816,29659,26898,29659,27796,29659,24953,29659,
-20119,29659,25129,29659,29653,29659,26887,29659,23480,29659,25099,29659,
-21605,29659,    6,29684,29645,29687,29451,29659,28625,29691,28573,29691,
-20187,29659,28625,29659,19683,29659,20839,29659,21399,29659,28573,29659,
-27787,29659,20501,29708,20501,29659,27787,29712,26889,29712,26625,29712,
-27533,29712,23457,29712,27533,29659,20501,29724,   17,29659,    6,29658,
-26816,29731,24953,29731,29451,29731,   17,29731,20501,29731,26625,29740,
-26625,29731,20501,29744,    7,29658,29697,29749,20103,29749,20186,29659,
-29731,29755,    6,29659,29752,29759,24941,29759,23175,29759,29645,29759,
-28133,29759,21605,29758,29645,29771,20103,29759,29749,29774,29077,29759,
-29749,29759,20103,29780,   11,29759,20763,29759,26625,29787,    7,29659,
-29731,29791,20103,29793,20103,29790,29731,29797,23457,29659,20501,29800,
-26889,29659,20501,29804,20103,29659,    7,29809,29759,29811,    7,29808,
-29731,29815,26625,29659,20501,29818,    6,29819,    7,29819,    6,29818,
-29825,29827,    7,29818,29823,29831,21036,21605,27965,29835,27951,29835,
-27948,29835,26816,29835,27796,29835,26898,29835,27216,29835,28151,29835,
-28101,29835,26887,29835,21194,29835,24673,29857,24675,29835,21069,29835,
-21267,29835,21305,29835,24953,29835,20119,29835,22723,29835,25129,29835,
-25063,29835,23480,29835,21796,29835,21795,29835,20501,29882,25099,29835,
-18967,29835,21183,29889,21795,29891,21183,29888,24673,29895,21259,29835,
-20103,29899,21183,29835,27021,29902,18967,29902,24673,29907,20187,29835,
-21127,29911,28573,29835,28625,29835,19683,29835,20839,29835,21399,29835,
-27787,29835,20501,29924,27533,29835,20501,29928,27021,29835,21183,29932,
-20501,29835,27787,29936,26889,29936,26625,29936,27533,29936,23457,29936,
-21795,29936,   17,29835,    6,29834,26816,29953,21069,29953,21267,29953,
-24953,29953,21305,29953,25063,29953,21259,29953,20103,29967,   17,29953,
-20501,29953,26625,29972,26625,29953,20501,29976,    7,29834,21242,29981,
-29911,29981,21049,29981,21183,29981,20103,29988,20103,29981,21183,29992,
-20186,29835,29953,29997,21105,29997,    6,29835,28133,30003,21279,30003,
-21166,30003,29992,30003,23175,30003,24941,30003,20103,30003,21127,30016,
-29981,30016,21127,30003,20103,30022,29981,30003,20103,30026,   11,30003,
-20763,30003,26625,30033,    7,29835,21105,30037,20103,30039,29953,30037,
-20103,30043,20103,30036,29953,30047,21105,30047,23457,29835,20501,30052,
-26889,29835,20501,30056,26625,29835,20501,30060,    6,30061,    7,30061,
-    6,30060,30067,30069,    7,30060,30065,30073,20103,29835,    7,30077,
-30003,30079,21183,30079,    7,30076,29953,30085,21105,30085,    4,21605,
-26371,30091,26450,30091,26539,30091,26542,30091,27439,30090,27483,30101,
-17048,30091,26496,30091,26452,30091,26373,30091,26466,30091,26386,30091,
-  586,30091,  803,30117,  586,30090,  767,30121,    1,30091,   15,30124,
-    2,30124,    7,30124,26219,30131,    7,30125,23755,30135,26331,30135,
-27805,30135,25793,30135,    1,30090,26454,30145,26375,30145,26415,30145,
-26219,30150,26219,30145,26415,30154,26292,30145,26331,30159,25793,30145,
-    7,30162,26331,30165,    7,30163,26219,30169,    7,30145,25793,30173,
-26415,30175,25793,30172,26331,30179,    3,30090,  767,30183,26454,30091,
-18967,30186,26375,30091,18967,30190,28159,30091, 8684,30091, 8647,30091,
-26154,30091,26331,30201,26534,30091,26541,30205,26536,30091,26331,30209,
-26320,30091,26331,30213,19384,30091,20501,30217,19474,30091,20611,30091,
- 9989,30091,20762,30090,20985,30227,27436,30091,20501,30231,27507,30231,
-27451,30231,27453,30231,26492,30091,26219,30240,26278,30091,26415,30244,
-26219,30091,26541,30248,26492,30248,26415,30248,18967,30254,18967,30248,
-26415,30258,27021,30091,18967,30263,20413,30265,18967,30262,20501,30269,
-21527,30091,    9,30273,21258,30091,21575,30091,20501,30279,20985,30091,
-20501,30090,27907,30285,27483,30285,  340,30091,    9,30091,  483,30091,
-26292,30091,26331,30297,18967,30299,18967,30296,26331,30303,20413,30091,
-20763,30307,25793,30309,26197,30091,26415,30312,  375,30091,24095,30091,
-18967,30319,20413,30321,18967,30318,20501,30325,24252,30091,20501,30329,
-   15,30091,    1,30332,18967,30332,   11,30091,18967,30339,20413,30341,
-18967,30338,20501,30345, 1369,30339, 9565,30349,28741,30349,30129,30349,
-27979,30339,19631,30357,11949,30357, 4669,30357,26415,30091,    1,30365,
-26219,30367,26197,30364,26278,30364,26219,30364,18967,30374,18967,30364,
-26219,30378,18967,30365,26219,30383, 1369,30090,20029,30387,19781,30387,
-21103,30387,26541,30091,26219,30394,    6,30090,23646,30399,23642,30399,
-23606,30399,24349,30399,26086,30399,26062,30399,26068,30399,24583,30399,
-24591,30399,19384,30399,24265,30419,25793,30399,19631,30422,11949,30422,
- 4669,30422,11949,30399,23493,30430,25793,30430, 4669,30399,23493,30436,
-25793,30436,19631,30399,23493,30442,25793,30442,   11,30399,18967,30448,
-24265,30451,18967,30399,   11,30454,24265,30457,   11,30455,23493,30461,
-25793,30461,23493,30399,11949,30466, 4669,30466,19631,30466,    7,30090,
-21549,30475,21105,30475,19625,30475,    6,30091,26524,30483,26545,30485,
-26524,30482,26541,30489,    7,30091,26525,30492,30455,30493,25793,30497,
-    2,30493,    0,30500,30422,30503,25793,30503,30399,30506,30399,30503,
-25793,30510,    0,30493,    2,30514,30422,30517,25793,30517,30399,30520,
-30399,30517,25793,30524,    1,30492,26219,30529,18966,30493,30422,30533,
-25793,30533,30399,30536,30399,30533,25793,30540, 8495,30492,21183,30493,
- 8495,30493,26524,30492,26331,30551,21037,30492,25793,30492,26331,30557,
-18967,30559,18967,30556,26331,30563,  265,30492,  265,30493,25793,30493,
-26541,30571,30495,30571,26492,30571,26415,30571,18967,30578,18967,30571,
-26415,30582,18967,30492,26219,30587,25793,30586,26331,30591,25793,30587,
-26415,30595,20763,30090,26142,30599,24849,30599,25793,30599,20413,30604,
-20413,30599,25793,30608,20762,30091,26219,30613,20885,30613,25793,30612,
-26331,30619,25793,30613,26415,30623,26524,30091,20501,30627,    6,30626,
-26541,30631,    7,30626,26331,30635,    6,30627,26537,30639,30635,30639,
-    7,30627,30631,30645,26219,30645, 8495,30091,    7,30650,25793,30091,
-    1,30655,    7,30656,26219,30659,    7,30657,26331,30663,20762,30654,
-26331,30667,20762,30655,26197,30671,26219,30671,    6,30655,    7,30655,
-26197,30679,26278,30679,    1,30678,26219,30685,26219,30679,18967,30688,
-18967,30678,26219,30693,18967,30679,26219,30696,    6,30654,30679,30701,
-    7,30654,26331,30705,18967,30707,30677,30705,18967,30704,26331,30713,
-18967,30654,20501,30717,    6,30716,    7,30716,26331,30723,    6,30717,
-30723,30727,    7,30717,30721,30731,26219,30731,18967,30655,20413,30737,
-    7,30736,26219,30741,    7,30737,26331,30745,  265,30091,    0,30748,
-    6,30751,21605,30752,21605,30751,    6,30756,    6,30757,    7,30748,
-30755,30763,30759,30763,    7,30749,30761,30769,18967,30091,26454,30772,
-26375,30772,26292,30772,26331,30779,   11,30772,20501,30783,   15,30772,
-27021,30772,20501,30789,20501,30773,25793,30793,27021,30793,24095,30793,
-26415,30772,26219,30800,20187,30773,25793,30805,26219,30772,26415,30808,
-24095,30772,20501,30813,    6,30773,26604,30817,29645,30817,25793,30817,
-20103,30822,20103,30817,25793,30826,    7,30773,26331,30831,27805,30831,
-23755,30831,25793,30831,    6,30772,30831,30841,    7,30772,26219,30845,
-25793,30844,26331,30849,30817,30845,25793,30845,26415,30855,25793,30772,
-20501,30859,    6,30858,    7,30858,26331,30865,    6,30859,30865,30869,
-    7,30859,30863,30873,26219,30873,20103,30773,26219,30879,    7,30879,
-25793,30883,21037,30091,    6,30887,    7,30887,    6,30886,30891,30893,
-    7,30886,30889,30897,18967,30090,27530,30901,26142,30901,26009,30901,
-26270,30901,28571,30901,26454,30901,26375,30901,24210,30901,27459,30901,
-26219,30901,20273,30920,26415,30920,20413,30901,25793,30926,27021,30926,
-24095,30926,27021,30901,20413,30934,20985,30901,24095,30901,20413,30940,
-20352,30901,25793,30945,26292,30901,26331,30949,    7,30901,25793,30953,
-20273,30955,26415,30955,20273,30952,25793,30961,25793,30952,26331,30965,
-26415,30901,26219,30968,20273,30901,26219,30972,    7,30972,25793,30977,
-25793,30901,20413,30980,    7,30981,26219,30985,    7,30980,26331,30989,
-21314,21605,27530,30993,26142,30993,26270,30993,26009,30993,26454,30993,
-26375,30993,28571,30993,24795,30993,24799,30993,24210,30993,21850,30993,
-21845,30993,20413,31016,27459,30993,18967,30993,    6,31023,29645,31025,
-26219,30993,20273,31028,26415,31028,27021,30993,20413,31034,20413,30993,
-25793,31038,27021,31038,24095,31038,21845,31038,20985,30993,24095,30993,
-20413,31050,26292,30993,26331,31055,20352,30993,25793,31059,    7,30993,
-25793,31063,20273,31065,26415,31065,25793,31062,26331,31071,20273,31062,
-25793,31075,26415,30993,26219,31078,25793,30993,20413,31082,    7,31083,
-26219,31087,    7,31082,26331,31091,20273,30993,26219,31094,    7,31094,
-25793,31099,    6,21605,27347,31103,27401,31103,27378,31103,27327,31103,
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-21195,31103,29835,31209,25629,31103,13894,31103,13919,31103,27498,31103,
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-    4,31227,27907,31233,27479,31103,27468,31103,27500,31103,27511,31103,
-26941,31103, 9457,31103,30118,31103,30185,31103,30123,31103,30105,31103,
-26742,31103, 9444,31103, 9435,31103,  713,31260,30751,31102,30763,31265,
-30221,31103,19397,31102,28777,31271, 3119,31103, 3027,31103, 3805,31103,
- 4820,31103, 6469,31103, 3419,31103,27422,31103,27359,31103,27392,31103,
-27339,31103,27343,31103,27396,31103,27404,31103,27351,31103,27352,31103,
-27407,31103, 9539,31103,24554,31103,29659,31102,29645,31311,17294,31103,
-26843,31103,30335,31103,26845,31103,25689,31103,30337,31103,30787,31103,
-24552,31103,25157,31103,24881,31103,28387,31103,28386,31102,31335,31337,
-28387,31102,28386,31103,31341,31343,27287,31103,27323,31347,30127,31103,
-30117,31103,  803,31352,    3,31103,    0,31356,27277,31103,20273,31360,
-27377,31360,27461,31103,20273,31366,27483,31366,27377,31366,27205,31103,
-20273,31374,27377,31374,27218,31103,27316,31103,27398,31103,18967,31384,
-27345,31103,18967,31388,  413,31103,30292,31103,26986,31103,26982,31103,
- 9287,31103,27224,31103,20273,31402,27323,31403,21276,31103,29835,31409,
-21496,31103,27021,31412,27021,31413,21277,31103,27021,31418,27021,31419,
-21183,31419, 6441,31103,  759,31427, 4403,31103,17075,31103,16329,31103,
- 4919,31103,17099,31103, 9362,31103, 5309,31103, 4547,31103,27291,31103,
-20273,31446,27323,31447,26810,31103,26990,31103,  777,31103,  824,31103,
-  244,31103, 4933,31103, 5297,31103,17077,31103,13019,31103,12705,31103,
-13673,31103,18391,31103,18617,31103,14597,31103,27210,31103,27323,31481,
-27472,31103,27323,31485,27300,31103,27323,31489,26317,31103,26476,31103,
- 9134,31103, 1216,31103,19687,31103,26625,31500,19397,31103,29659,31505,
-29835,31505,22655,31505,23622,31103,27410,31103,22139,31103,22163,31103,
-24543,31103,24557,31103,  305,31103,21036,31102,26816,31527,25063,31527,
-31245,31527,21069,31527,21267,31527,21305,31527,24953,31527,21259,31527,
-20103,31543,   17,31527,20501,31527,26625,31548,26625,31527,20501,31552,
-26415,31103,    9,31556,26940,31103,29645,31103,29659,31563,27418,31103,
-27255,31566,27272,31103,27377,31570,27255,31103,27483,31574,27418,31574,
-27377,31574,18967,31580,18967,31574,27377,31584, 8446,31103,  155,31103,
-17049,31103, 1369,31593, 8861,31103,26625,31103,21127,31598,20843,31598,
-19687,31598, 8337,31598,20103,31598, 7971,31598, 9565,31598,18967,31598,
- 9731,31103,27021,31616,30613,31103,20885,31620, 9617,31102,26973,31625,
- 8337,31103,24545,31628,26625,31628,    9,31628, 4819,31103,  713,31636,
-13857,31103,  713,31640, 4543,31103,21372,31103,21315,31103,27190,31648,
-27483,31648,25027,31648,27021,31649,20273,31657,27377,31657,27021,31648,
-20273,31662,27323,31663,20273,31648,27021,31668,27021,31669,   11,31648,
-21037,31103,29835,31677,20103,31679,20763,31676,29835,31683,20103,31676,
-29835,31687,  713,31103,13857,31690, 9435,31690, 4819,31690,  803,31690,
-   25,31103, 7971,31103,26625,31702,20884,31103,29659,31707,29835,31707,
-20984,31103,28659,31713,28625,31713,30227,31713,22285,31713,17233,31103,
-  903,31722,30091,31103,    9,31726,20162,31103,20171,31103,25027,31103,
-21315,31734,27190,31103,21315,31738,21127,31103,26625,31742,20843,31103,
-26625,31746,28681,31746, 9565,31103,26625,31752, 8997,31103,    9,31756,
-  766,31103, 9455,31761,30121,31761, 3803,31761,  759,31761,    9,31103,
-27021,31770,30091,31770, 9195,31770,  241,31770,26415,31770, 8997,31770,
-27377,31770,23493,31770, 8337,31770,20103,31770, 1011,31103,  903,31792,
-  241,31103,    9,31796,27297,31103,27282,31103,27323,31803,18967,31805,
-18967,31802,27323,31809,   17,31803,20103,31103,24545,31814,26625,31814,
-21037,31814,29835,31821,    9,31814,21037,31815,25793,31827,20273,31103,
-27224,31830,27291,31830,27205,31830,27277,31830,27461,31830,21315,31830,
-27021,31842,27021,31843,27021,31830,21315,31848,27231,31103,27377,31852,
-  803,31103,30117,31856,  713,31856,20885,31103,27021,31862,30613,31862,
-23493,31103,    9,31868,24545,31103,20103,31872, 8337,31872,   17,31873,
-   11,31103,28715,31881,19631,31883,11949,31883, 4669,31883,21315,31880,
- 8451,31103,27377,31103,27059,31894,27263,31894,27205,31894,27231,31894,
-27461,31894,27272,31894,27277,31894,27255,31894,18967,31910,    9,31894,
-18967,31894,27255,31916,  903,31103,17233,31920, 1011,31920,  257,31103,
-27483,31103,21315,31928,27461,31928,27255,31928,    4,31102,23646,31937,
-23642,31937,23606,31937,24349,31937,26086,31937,26062,31937,26068,31937,
-24583,31937,24591,31937,19384,31937,24265,31957,25793,31937,19631,31960,
-11949,31960, 4669,31960,11949,31937,23493,31968,25793,31968, 4669,31937,
-23493,31974,25793,31974,19631,31937,23493,31980,25793,31980,   11,31937,
-18967,31986,24265,31989,18967,31937,   11,31992,24265,31995,   11,31993,
-23493,31999,25793,31999,23493,31937,11949,32004, 4669,32004,19631,32004,
-    5,31102,26940,32013,20413,32015,18967,32012,26816,32019,24953,32019,
-31245,32019,   17,32019,20501,32019,26625,32028,26625,32019,20501,32032,
-26625,32013,18967,32036,20413,32039,18967,32037,20501,32043,18967,32013,
-20413,32047,26625,32049,26625,32046,20413,32053,    4,31103,27857,32057,
-27879,32059,27857,32056,27895,32063,20763,32056,29835,32067,29659,32067,
-28715,32057,29083,32073,29091,32073,19631,32073,11949,32073, 4669,32073,
-29129,32073,18967,32073,29077,32087,18967,32056,23147,32091,24819,32091,
-28925,32091,28715,32091,20413,32099,    5,31103,27437,32102,19397,32103,
-21605,32103,20762,32108,20762,32109,  586,32108,  586,32109,31993,32103,
-25793,32119,    2,32103,21605,32123,    0,32122,31960,32127,25793,32127,
-31937,32130,31937,32127,25793,32134,32073,32127,    0,32103,21605,32141,
-    2,32140,31960,32145,25793,32145,31937,32148,31937,32145,25793,32152,
-32073,32145,  586,32140,  586,32141,21605,32102,18966,32102,18966,32103,
-21605,32167,    7,32169,    9,32167,31960,32167,25793,32167,31937,32176,
-31937,32167,25793,32180,32073,32167,    1,32103,32125,32187,31937,32189,
-    3,32103,32143,32193,31937,32195,28573,32103,28625,32103,20843,32201,
- 9195,32103,20501,32103,21183,32103,27436,32102,27323,32211, 9377,32103,
-  713,32215, 9875,32103,19396,32103,32165,32221,    9,32103,18967,32224,
-32165,32227,18967,32225,32167,32231,20763,32102,22285,32235,28659,32235,
-28625,32235,32111,32235,30227,32235,30772,32103,20501,32247,27021,32102,
-27323,32251,18967,32253,18967,32250,27323,32257,   17,32251, 1369,32103,
-  903,32103,    9,32265,  587,32102, 9455,32269,32159,32269,32115,32269,
- 3803,32269,30121,32269,  759,32269,25673,32103,20501,32283,20763,32103,
-32113,32287,27021,32287,30613,32287,  587,32103,32161,32295,32117,32295,
-30117,32295,  713,32295,27021,32103,27483,32305,32105,32305,27418,32305,
-27377,32305,18967,32312,18967,32305,27377,32316,31992,32103,32163,32321,
-18967,32103,32163,32325,31937,32327,32165,32325,    9,32331,    9,32324,
-32165,32335,30091,32324,20501,32339,31937,32324,32163,32343,31937,32103,
-18967,32346,32163,32349,30091,32103,    9,32353,18967,32352,20501,32357,
-18967,32353,20413,32361,18967,32102,24953,32365,32171,32365,32107,32365,
-32172,32365,32167,32365,    9,32374,    9,32365,32167,32378,27021,32364,
-27323,32383,27021,32365,27377,32387,21037,31102,26604,32391,31561,32391,
-31615,32391,29645,32391,25793,32391,20103,32400,20103,32391,25793,32404,
-21314,31103,23147,32409,24819,32409,28925,32409,28715,32409,20413,32417,
-21036,31103,25673,32421,20501,32423,25087,32421,25691,32421,22357,32421,
-24953,32421,21049,32421,21242,32421,21183,32421,20103,32438,27021,32420,
-27323,32443,20103,32421,21183,32446,27021,32421,27377,32451,27436,31103,
-    5,32454,27323,32457,    5,32455,27255,32461, 9195,31103,    9,32464,
-27021,31103,21496,32468,21277,32468,20885,32468,    9,32468, 9731,32468,
-21037,32468,21315,32468,20273,32482,27323,32483,21037,32469,21315,32469,
-27205,32491,21036,32468,27323,32495,32489,32495,21036,32469,27231,32501,
-32481,32501,20273,32468,21315,32506,    4,32469,    5,32469,27231,32513,
-27272,32513,27255,32513,18967,32518,18967,32513,27255,32522,    9,32513,
-    4,32468,32513,32529,    5,32468,27323,32533,18967,32535,32511,32533,
-18967,32532,27323,32541,   17,32533,18967,32468,    5,32546,27323,32549,
-    5,32547,27255,32553,  587,31103,30091,32557,  803,32559,    5,32556,
- 9455,32563, 3803,32563,30121,32563,  759,32563,    5,32557, 9435,32573,
-  803,32573,18967,31103,32391,32579,26625,32581,27398,32578,27345,32578,
-21605,32578,    7,32589,    4,32591,    4,32590,    4,32589,    7,32596,
-   16,32589,27282,32578,27323,32603,26625,32578,32391,32607,27377,32578,
-27255,32610,20483,32579,25793,32615,27255,32578,27377,32618,21183,32579,
-26625,32623,    4,32579,26142,32627,24849,32627,21605,32627,    7,32633,
-25793,32627,20413,32636,20413,32627,25793,32640,    5,32579,32593,32645,
-    4,32578,24819,32649,23147,32649,28925,32649,28715,32649,20413,32657,
-    5,32578,24953,32661,32595,32661,32599,32661,32635,32661,32601,32661,
-27021,32660,27323,32673,27021,32661,27377,32677,27021,32578,    5,32680,
-27323,32683,    5,32681,27255,32687,20763,31103,18967,32691,    5,32692,
-    5,32693,21037,32690,29835,32699,29659,32691,29835,32691,21036,32691,
-21037,32691,25793,32709,30091,32691,20885,32713,    4,32691,32697,32717,
-    5,32691,18967,32720,28681,32721,    4,32690,32723,32727,32695,32727,
-29659,32727,29835,32727,32707,32727,    5,32690,28625,32739,22285,32739,
-28659,32739,30227,32739,32709,32739,18967,31102,    5,32750,26816,32753,
-24953,32753,31245,32753,   17,32753,26625,32753,20501,32762,20501,32753,
-26625,32766,    5,32751,    9,32771,30091,32771,20501,32775,21526,21605,
-    5,32778,26816,32781,24953,32781,   17,32781,26625,32781,20501,32788,
-20501,32781,26625,32792,    5,32779,    9,32797,30091,32797,20501,32801,
-18967,21605,20355,32804,20354,32804,26415,32805,26219,32810,26454,32805,
-26375,32805,21127,32805,21183,32818,21248,32805,21273,32805,20986,32805,
-20987,32805,28109,32804,28108,32805,32831,32833,31676,32805,31527,32837,
-28109,32805,28108,32804,32841,32843,20352,32805,    4,32847,22729,32849,
-22731,32847,32809,32847,20486,32805,26292,32805,26331,32859,19622,32804,
-19623,32805,32863,32865,19623,32804,19622,32805,32869,32871,  386,32805,
-  347,32805,21396,32804,21397,32805,32879,32881,21546,32804,21547,32805,
-32885,32887,21397,32804,21396,32805,32891,32893,21547,32804,21546,32805,
-32897,32899,20477,32805,27673,32805,20476,32805,27672,32805,21127,32804,
-21087,32911,29031,32804,31881,32805,21543,32805,21087,32805,21127,32921,
-31880,32805,21542,32805,26219,32805,26415,32928,27283,32805,31103,32933,
-20353,32805,32807,32937,20487,32805,21403,32804,21402,32805,32943,32945,
-21573,32804,21572,32805,32949,32951,21403,32805,21402,32804,32955,32957,
-21573,32805,21572,32804,32961,32963,20985,32804,32829,32967,21401,32804,
-32056,32805,29450,32805,29041,32975,28791,32975,29731,32975,29659,32975,
-20984,32805,21400,32805,32971,32987,32103,32805,    7,32990,32365,32993,
-32057,32805,29451,32805,32915,32999,20984,32804,32827,33003,20985,32805,
-31103,33007,    7,33006,33003,33011,21400,32804,21401,32805,33015,33017,
-21183,32805,21127,33020,20413,32805,    4,33025,    4,33024,   11,33024,
-27533,32805,   17,33032,20273,32805,    7,33037,    7,33036,   15,33037,
-25793,32805,    7,33045,26219,33047,    7,33044,26331,33051,21527,32805,
-   17,33054,31103,32805,    4,33059,21037,33059,32421,33063,21037,33058,
-31527,33067,    4,33058,   11,33058,21037,32805,31103,33075,32391,33077,
-31103,33074,31527,33081,28715,32805,29031,33085,    7,33085,29759,33089,
-21527,33085,29229,33093,    7,33084,29041,33097,29731,33097,29659,33097,
-28791,33097,   15,33085,  580,32805, 1170,32805,  256,32805,  629,32805,
- 1413,32805,  922,32805,  581,32805, 1171,32805,  767,32805,31103,33125,
-  375,32805,  305,33128,  510,32805,   18,32804,   12,32804,23493,33137,
- 1291,32805,  525,32805,   13,32805,22807,33145,33137,33145,   19,32805,
-33135,33151,   18,32805,   13,32804,   12,32805,33157,33159,   19,32804,
-33155,33163,   16,32805,32421,33167,25743,33167,32365,33167,32661,33167,
-27533,33167,21037,33167,31103,33179,   10,32805,19333,33183,33137,33183,
-31648,33183,19455,33183,24237,33183,22896,33183,19393,33183,19385,33183,
-    9,33199,22807,33183,    9,33202,20413,33183,    9,33183,22807,33208,
-21315,33183,31103,33212,31103,33183,21315,33216,   14,32804,32847,33221,
-33041,33221,24953,33221,32975,33221,33097,33221,26816,33221,33167,33221,
-33111,33221,   17,33221,20501,33221,26625,33240,26625,33221,20501,33244,
-   10,32804,22149,33249,19441,33249,24213,33249,24059,33249,19656,33249,
-    9,33249,19631,33260,19631,33249,    9,33264,23983,33249,    9,33269,
-  524,32805, 1290,32805,   11,32804,21087,33277,20326,33277,33183,33277,
-    9,33283,    9,33276,23493,33287,33183,33287,23493,33277,    9,33293,
-20273,33277,    9,33296,    9,33277,20273,33300,    9,32804,   11,33304,
-23493,33307,33183,33307,   11,33305,24265,33313,33249,33313,   15,32804,
-32937,33319,32999,33319,26142,33319,33123,33319,20413,33319,25793,33328,
-20273,33319,25793,33319,20413,33334,   11,32805,24567,33339,33157,33339,
-24428,33339,20413,33338,31103,33338,33260,33339,33249,33339,    9,33352,
-24265,33339,    9,33356,    9,33339,24265,33360,33249,33360,  483,33338,
-    9,32805,30090,33368,30090,33369,30091,33368,33373,33375,  483,33368,
-   11,33369,20273,33381,30091,33369,33371,33385,20501,33385,   17,32805,
-19474,33390,19475,33391,33393,33395,21314,33390,19474,33391,19475,33390,
-33401,33403,21314,33391,21315,33390,33407,33409,27533,33390,21527,33390,
-33319,33391, 1275,33390,21315,33391,33399,33421,  305,32805,  375,33424,
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-    7,34338,    7,34339,33773,34343,33221,34343,   15,34338,27021,34311,
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-27021,34362,20843,34362,21127,34362,19687,34362,19687,34311,31103,34372,
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-  375,34311,33727,34311,    9,34391,    7,34311,21605,34394,25793,34395,
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-26625,34622,27533,34622,23457,34622,34395,34447,   17,34447,33465,34447,
-29077,34639,20273,34639,21605,34638,33641,34645,28233,34639,24265,34639,
-   11,34639,    6,34446,26816,34655,34405,34655,33041,34655,33097,34655,
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-24953,34655,33167,34655,33111,34655,33539,34655,33431,34655,   17,34655,
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-    7,34446,34635,34701,34579,34701,34311,34701,20103,34701,20186,34447,
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-   11,34723,34311,34723,34701,34762,20763,34723,26625,34767,    7,34447,
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-    7,34808,34813,34821,34311,34447,21605,34824,18967,34825,    6,34828,
-    6,34829,31103,34824,21527,34825,21526,34825,20413,34825,    6,34825,
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-    6,34824,34849,34857,34837,34857,    7,34824,34655,34863,34845,34863,
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-26625,34963,24265,34875,34003,34966,29077,34875,34003,34970,28233,34875,
-34003,34974,20843,34875,20885,34978,   11,34875,34003,34982,33319,34875,
-20273,34986,34003,34875,29077,34990,20273,34990,28233,34990,24265,34990,
-   11,34990,30993,34875,30901,34875,20984,34875,20839,35007,    5,34875,
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-34461,35031,29691,35031,29340,35031,28714,35031,33603,35043,21605,35031,
-    5,35047,33681,35049,34405,35049,33167,35049,    5,35046,33603,35057,
-34607,35031,34637,35031,33924,35031,34447,35031,   11,35031,32103,35031,
-29835,35031,29659,35031,20273,35031,34723,35076,29229,35076,35011,35031,
-34723,35031,20273,35084,  567,35031,29229,35031,20273,35090,    9,35031,
-33871,35094,33871,35031,    9,35098,    4,35030,    5,35030,35083,35105,
-34875,35105,35010,35031,35103,35111,    4,35031,35108,35115,    7,35114,
-35049,35119,35105,35115,34875,35122,34875,35115,35105,35126,  483,35115,
-    5,35031,21605,35132,33603,35135,35103,35133,34875,35139,34875,35132,
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-28741,35187,    2,35216,29229,35219,20501,35186,19463,35223,19317,35223,
-19301,35223,20009,35223,   53,35186,19463,35233,20009,35233,19317,35233,
-19053,35187,  989,35241, 1201,35187,18967,35245, 1203,35247,17673,35186,
-17685,35251,21405,35186,21489,35255,19513,35186,19463,35259,20009,35259,
-19317,35259,10157,35187,   17,35267,10159,35269,20343,35187,18967,35273,
-20345,35275, 1179,35187,  527,35186,19301,35281,19916,35186,    4,35285,
-    7,35286,    7,35285,    4,35290,   16,35285,19069,35186,19301,35297,
- 1290,35186,    0,35301,    2,35302,    2,35301,    0,35306,18966,35301,
-21530,35187,20501,35313, 1489,35187,16859,35187,   11,35318, 9875,35321,
-21529,35187,   11,35324,20501,35327,  147,35187,16860,35187, 9875,35333,
-  987,35187, 8069,35187,   11,35338, 8067,35341, 8070,35187, 8067,35345,
-27519,35187,27525,35187,26322,35187,26566,35187,26102,35187,26276,35187,
-26105,35187,33464,35187,29600,35187,32295,35187,31856,35187,25636,35187,
-29229,35371,    9,35371,28555,35187,29229,35377,    9,35377,19301,35187,
-20501,35383,  527,35383,19069,35383, 4266,35187, 8056,35187, 8147,35187,
-20739,35187, 9997,35187, 8784,35187, 8622,35187, 8824,35187, 8702,35187,
- 8697,35187, 8676,35187, 8635,35187,20828,35187,19772,35187,19890,35187,
-19774,35187,19894,35187,19382,35187,19458,35187,32557,35187,  803,35429,
-19463,35187,20501,35433,   53,35433,19513,35433,20009,35187,   53,35441,
-20501,35441,19513,35441,19317,35187,20501,35449,   53,35449,19513,35449,
-19914,35187,21066,35187,20575,35187,21312,35187,21270,35187,  694,35187,
- 9377,35467,16920,35187,    9,35471,17621,35187,    9,35475, 4213,35187,
-  375,35478, 8757,35187,  375,35482, 9530,35187, 9875,35487,16091,35487,
-20501,35487,19751,35187,   53,35495,  253,35495,  117,35495,   71,35495,
- 1471,35495, 1397,35187, 9592,35187,16514,35187,19380,35187,13836,35187,
-20595,35187, 9911,35187, 9983,35187, 9905,35187,17566,35187,16816,35187,
-17910,35187,18880,35187,14103,35187,14087,35532, 5001,35187, 4983,35536,
-20597,35187,26219,35187,  241,35542,  587,35543, 8647,35187,  241,35548,
-  587,35549,14073,35187,  586,35554,14091,35557,  586,35555,14103,35561,
- 4971,35187,  586,35564, 4987,35567,  586,35565, 5001,35571, 1291,35187,
-35305,35575,35309,35575, 1871,35575, 1889,35575,    3,35575,19667,35575,
-12345,35575, 5123,35575,19067,35575,35311,35575,18967,35575, 1297,35597,
-35301,35597,19917,35187,35289,35603,35293,35603,19939,35603,19945,35603,
-    6,35603,19947,35603,35295,35603,   17,35603,19931,35619,35285,35619,
- 1108,35187,   11,35625,22806,35187,    9,35629,  524,35187,    3,35633,
- 3477,35633, 2007,35633,19051,35633,19667,35633,12345,35633, 5123,35633,
-18967,35633,  555,35649,  713,35187, 1325,35187,17455,35655,10001,35187,
- 1505,35659, 9513,35187,   11,35662, 9875,35665,16091,35665,20501,35665,
-19396,35187,  483,35672,17455,35187,13737,35676,  803,35187,31103,35680,
-31103,35187,  803,35684,  113,35187,  375,35187,  587,35691, 9195,35693,
- 4213,35690, 7971,35690, 8757,35690,  587,35690, 9377,35703, 9565,35690,
-18967,35690,19892,35187,    9,35710,  510,35187,18967,35714,  587,35187,
-  375,35718, 9377,35721, 9377,35719,  375,35725,  483,35187,19396,35728,
-  587,35729,   11,35728, 5123,35735,12345,35735, 3477,35735, 2007,35735,
-19667,35735,19051,35735,18967,35735,  555,35749,18967,35728,    9,35752,
-    9,35728,18967,35756, 1275,35187,16833,35760,    9,35763,  903,35761,
-    9,35761,21575,35187,18967,35771,21577,35773,21581,35773,21585,35773,
- 6685,35187, 7519,35187,   17,35783, 7521,35785, 7525,35785, 7529,35785,
-21258,35187,  241,35792,16722,35187,32103,35187,    9,35799,10310,35187,
- 8684,35187,  241,35804,  331,35805,26292,35187,  241,35810,  482,35186,
-    2,35815,    0,35816,35633,35819,35735,35819,    0,35815,    2,35824,
-35633,35827,35735,35827,35749,35815,35649,35815,18966,35815,35735,35837,
-35633,35837, 1368,35186,25793,35843, 8495,35843,23755,35843,10055,35843,
- 4329,35843, 4311,35843,26331,35843,27805,35843, 3785,35843, 8717,35843,
-10351,35843,  586,35186,31761,35867,32563,35867,32269,35867,    7,35867,
-    4,35874,    4,35867,    7,35878,   16,35867,  767,35867,31103,35885,
-  482,35187,  587,35889, 1274,35187,  587,35186, 9262,35895,  375,35895,
- 9195,35898,    7,35895,  265,35903, 9195,35905, 9195,35895,  375,35908,
-  483,35895,  483,35186, 1369,35186,19463,35917,19301,35917,20009,35917,
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-22677,38403,27533,38304,23023,38411,22677,38411,22605,38411,25483,38411,
-37663,38304,37617,38420,37672,38421,37671,38421,37617,38426,37771,38421,
-37879,38421,37617,38421,38397,38435,37671,38434,37933,38304,37899,38440,
-38011,38441,37899,38441,38391,38447,37897,38304,38137,38304,38121,38453,
-38219,38453,38185,38453,37145,38459,38253,38453,37617,38304,37663,38464,
-  483,38464,37899,38304,37933,38470,  483,38470,  979,38305,21605,38477,
-  987,38479,21879,38305, 1205,38483,29229,38304,29375,38487,17105,38304,
-17117,38491,23755,38304,23023,38495,22677,38495,25483,38495,26863,38305,
-21605,38503,26865,38505,10091,38305,   15,38509,10093,38511, 1009,38305,
-  675,38304,22605,38517, 1418,38304,    1,38521,    3,38522,    3,38521,
-    1,38526,21604,38521,21895,38304,22605,38533,25380,38304,    5,38537,
-    6,38538,    6,38537,    5,38542,   14,38537, 1365,38305,17573,38305,
-    9,38550,10001,38553,27996,38305,27533,38557, 1203,38305,17574,38305,
-10001,38563,  177,38305,27995,38305,    9,38568,27533,38571, 7963,38305,
-    9,38574, 7961,38577, 7964,38305, 7961,38581,  120,38305,   77,38305,
-37758,38305,37972,38305,37457,38305,37867,38305,35912,38305,35733,38305,
-35732,38305,35913,38305,22605,38305,27533,38605,  675,38605,21895,38605,
-36856,38305,  483,38613,37644,38305,  483,38617,37918,38305,37933,38621,
-  483,38621,37177,38305,  483,38627, 4798,38305,15896,38305,23023,38305,
-   59,38635,27533,38635,23755,38635,22677,38305,27533,38643,   59,38643,
-23755,38643,25483,38305,   59,38651,27533,38651,23755,38651,25368,38305,
-30290,38305,27127,38305,30762,38305,30566,38305,  843,38304,35187,38669,
- 1531,38304,  842,38304, 1530,38304,35930,38305,38675,38679,38307,38679,
- 9492,38305,10001,38685,13755,38685,27533,38685,24597,38305,   59,38693,
-  331,38693,   97,38693,  141,38693, 1325,38693,  629,38305,37896,38305,
-37610,38305,37783,38709,37616,38305,38467,38713,38423,38713,38311,38713,
-38331,38713,38469,38713,38465,38713,37663,38725,  483,38725,37898,38305,
-38473,38731,38443,38731,38315,38731,38329,38731,38475,38731,38471,38731,
-37933,38743,  483,38743,37866,38305,37456,38305,17508,38305, 9257,38305,
-27149,38305, 9353,38305, 9253,38305,38253,38305,38137,38763,38237,38763,
-  483,38763,38219,38305,38137,38771,  483,38771,38121,38305,38137,38777,
-  483,38777,15897,38305, 4799,38305,27161,38305,20187,38305,  483,38789,
- 8387,38305,  483,38793, 9541,38305,15879,38305,  483,38798, 4787,38305,
-  483,38802,16125,38305,    3,38806,    2,38806,  842,38806,  843,38807,
-38813,38815,  842,38807,  843,38806,38819,38821,    2,38807,38809,38825,
-    3,38807,38811,38829, 5121,38305,    3,38832,    2,38832,  842,38832,
-  843,38833,38839,38841,  842,38833,  843,38832,38845,38847,    2,38833,
-38835,38851,    3,38833,38837,38855,35729,38305,  587,38859,  587,38858,
-19384,38305,  483,38865,  669,38305, 1011,38869, 1086,38305,  483,38873,
- 1418,38305, 1011,38877,25381,38305,38541,38881,38545,38881,25423,38881,
-25429,38881,    7,38881,25431,38881,38547,38881,   15,38881,25415,38897,
-38537,38897, 1419,38305,38525,38903,38529,38903, 1801,38903, 1875,38903,
-    2,38903,23983,38903,10603,38903, 4625,38903,21893,38903,38531,38903,
-21605,38903, 1421,38925,38521,38925, 1108,38305, 9565,38931,  246,38305,
-  483,38935,  294,38305, 8495,38939,35931,38305,38669,38943,38309,38943,
-  483,38943,36773,38942,  483,38951,19396,38305,35718,38305,37885,38957,
-37202,38957,37145,38957,  483,38962,  483,38957,37145,38966,  668,38305,
-    2,38971, 3507,38971, 1971,38971,21783,38971,23983,38971,10603,38971,
- 4625,38971,21605,38971,  713,38987,20060,38305,  483,38991,  713,38305,
-16833,38995,38011,38305,37933,38999,38021,38999,  483,38999,37285,38305,
-37409,39006,36945,38305,37845,39011,37845,39010,  483,39011,37215,38305,
-    3,39019,38057,39019, 9377,38305,    9,39024,10001,39027,13755,39027,
-27533,39027, 1471,38305,16937,39035, 9875,38305, 1011,39039, 1347,39039,
-  555,38305,20763,38305,  566,39046,  566,39047,  567,39046,39051,39053,
-  567,39047,39049,39057,  257,38305,  483,39061,  973,38305, 4816,39065,
- 4805,39065, 1011,39068,38057,39065, 1011,39065, 4805,39074,  628,38305,
-  483,39079, 1406,38305,  587,38305,23584,39085,24355,39085,37782,39085,
-37408,39084,39091,39093,37783,39085,37408,39085,38670,39085,    3,39085,
-37409,39102,39093,39105,37409,39103,39099,39109,38669,39085,35187,39112,
-35728,39084,23493,39085,22807,39118,22807,39085,23493,39122,35729,39084,
-35728,39085,39127,39129,35729,39085,39117,39133,37409,39085,    3,39136,
-39093,39139,  483,39085,35187,39142,35187,39085,38669,39146,  483,39146,
-36773,39147,  483,39153, 1011,39084,  483,39157,    9,39084, 4625,39161,
-10603,39161, 3507,39161, 1971,39161,23983,39161,21783,39161,21605,39161,
-  713,39175,18967,39084,  483,39179,35187,39084,37202,39183,37885,39183,
-37145,39183,  483,39188,  483,39183,37145,39192,37409,39084,39097,39197,
-   11,39084,  483,39201, 1369,38305,35964,39204,35965,39205,39207,39209,
-35965,39204,35964,39205,39213,39215,35761,39205,38057,39205,   15,39204,
- 1011,39223,   11,39205, 1011,39205,   11,39204, 1275,38305,  483,38305,
-35895,39234, 4787,39234,15879,39234,21405,38305, 1011,39243,  483,39243,
- 7535,38305,   15,39249, 7537,39251, 7541,39251, 7545,39251,28337,38305,
-21605,39259,28351,39261,28355,39261,28359,39261, 6147,38305,  483,39269,
-15269,38305,  483,39273,17423,38305, 1011,39277,  483,39277, 4827,38305,
-  483,39283, 4745,38305, 1011,39287,  483,39287,17232,38305,30492,38305,
-25793,39295,  265,39294, 4569,38305,  483,39301,14625,38305,  483,39305,
- 7063,38305,  483,39309,37284,38305,37356,38305,17233,38305,30493,38305,
-  483,39319,37973,38305,37759,38305,38002,38305,38327,39327,37760,38305,
-  483,39331,37976,38305,38321,39335,37617,38305,38398,39339,38319,39339,
-38400,39339,38335,39339,37663,39339,38397,39348,37671,39349,38397,39339,
-37663,39354,  483,39354,36773,39338,  483,39361,  483,39339,38397,39364,
-37663,39338,  483,39369,37899,38305,38392,39373,38321,39373,38394,39373,
-38333,39373,35187,39372,37885,39383,37933,39373,38391,39386,38391,39373,
-37933,39390,  483,39390,36773,39372,37933,39397,  483,39397,  483,39373,
-38391,39402,38185,38305,38150,39407,38137,39407,37145,39410,37202,39407,
-37885,39407,  483,39407,37145,39418,37145,39407,38137,39422,  483,39422,
-37979,38305,38451,39429,37663,38305,37409,39432,    3,39435,    7,39433,
-39437,39439,    2,39439,39435,39443,  483,39433,37617,39447,37241,39432,
-37617,39432,  483,39453,37933,38305,36773,39456,37977,38305,38315,39461,
-37815,38305,  483,39465,38003,38305,38317,39469,38127,38305,  483,39473,
-  482,38304,    5,39477,    6,39478,    6,39477,    5,39482,   14,39477,
-  586,38304,39122,39489,39128,39489,39127,39489,38863,39489,38601,39489,
-38948,39489,38603,39489,39150,39489,39144,39489,38783,39489,38785,39489,
-    3,39489,    1,39512,38971,39515,39161,39515,    1,39489,    3,39520,
-38971,39523,39161,39523,39175,39489,38987,39489,21604,39489,39161,39533,
-38971,39533,39146,39489,  483,39538,39142,39489,35187,39542,38943,39489,
-  483,39546,35728,39489,39085,39550,22807,39489,39085,39554,26219,39489,
- 8647,39489,19396,39489,39085,39489,22807,39564,35728,39564,35187,39564,
-  483,39570,  483,39564,35187,39574,35895,39489,    9,39489,18967,39580,
-18967,39489,    9,39584,35187,39489,39142,39588,39085,39588,  483,39592,
-  483,39588,39085,39596,  483,39489,38943,39600,39146,39600,39085,39600,
-35187,39606,35187,39600,39085,39610, 4787,39489,15879,39489, 1368,38304,
- 3867,39619, 8277,39619, 3997,39619, 4067,39619, 9459,39619, 8953,39619,
- 1274,38304,27979,39633,14625,39633, 4569,39633,16381,39633,13325,39633,
-26293,39633, 8685,39633,35843,39633, 1369,39633,19513,39633, 3863,39633,
-37019,39633, 9955,39633,37377,39633, 8401,39633,10273,39633,20697,39633,
- 4137,39633,20219,39633, 4063,39633,35895,38305,  483,39674,35915,38305,
-    3,39678,    2,39678,  842,39678,  843,39679,39685,39687,  842,39679,
-  843,39678,39691,39693,    2,39679,39681,39697,    3,39679,39683,39701,
-  482,38305,39616,39705,39614,39705,39578,39705,35718,39705,35895,39705,
-39489,39714,39489,39705,15879,39718, 4787,39718,35895,39718,15879,39705,
-39489,39726, 4787,39705,39489,39730,35187,39705,  587,39734,  587,39735,
-39489,39739,  587,39705,35187,39742, 1368,38305,  587,38304,39241,39749,
-39239,39749,39237,39749,38599,39749,38597,39749,38633,39749,38631,39749,
-39677,39749,38801,39749,38805,39749,38679,39749,  483,39771,39235,39749,
-15879,39775, 4787,39775,35895,39775,  483,39748,38679,39783,  483,38304,
-38121,39787,38219,39787,38253,39787,37899,39786,38731,39795,37617,39786,
-38713,39799,38011,39787,38185,39787,37145,39805,14625,39787, 4569,39787,
-19396,39787,35931,39787,39489,39815,15269,39787, 4827,39787,  587,39786,
-38679,39823,37899,39787,38391,39827,37617,39787,38397,39831,17423,39787,
- 4745,39787,    9,39787,18967,39838,18967,39787,    9,39842,  587,39787,
-39588,39847,39489,39847,35187,39850,35187,39847,39489,39854,35187,39787,
-  586,39858,39823,39861,  586,39859,39847,39865,  586,38305,39713,39869,
-38861,39869,39737,39869,39745,39869,38675,39869,35187,39879,39823,39869,
-35187,39883,39783,39869,35187,39887, 1108,39869,  295,39869,35927,39869,
-37611,39869,38155,39869,35719,39869,39705,39901,39749,39869,22807,39905,
-35728,39905,35187,39905,  483,39910,  483,39905,35187,39914,35187,39868,
-39823,39919,39783,39919,38675,39919,39749,39919,  483,39927, 1011,39869,
-    9,39930,    9,39869, 1011,39934, 1369,38304, 1275,39938, 1275,38304,
-39429,39943,23023,39943,22605,39943,25483,39943,22677,39943, 1369,39942,
-  803,38305,17455,39956,13737,39957,39705,39961, 1505,38305,21605,39965,
-  713,39967,  305,39967, 1489,39967, 1509,39967,   25,39967,15705,38305,
-  767,39979,39705,39981,17455,38305,   15,39985, 9513,39987,16859,39987,
-17469,39987,  803,39984,  154,38305,  165,39997,  374,38305,   11,40001,
-   66,38305,  340,38305,30091,40006,27978,38305,39633,40011,23755,40011,
-27805,40011,26331,40011,25793,40011, 8495,40011,  511,38305,   11,40025,
-  935,38305,  483,40029, 1109,38305,   11,40033,  295,38305,  256,38305,
-  375,40039, 9805,40039,20762,38305, 1141,40045, 1447,40045,   33,40045,
-   88,38305,11251,40053, 5177,40053,  136,38305,36727,40059,37895,40059,
-36079,40059,  144,38305,  113,40067,  341,38305,  113,40071,16937,40071,
-27979,38305,38411,40077,  483,40077,39943,40077, 9565,40077,  113,38305,
- 4727,40087,    9,40089,37662,38305,37241,40093,37932,38305,36773,40097,
-37782,38305,37978,38305,39633,40103,38389,40103,  305,38305,16833,40109,
-   25,38305,16833,40113,20501,38305, 1011,40117, 1347,40117,  253,38305,
-16937,40123,   53,38305,16937,40127,  251,38305,   21,38305,38004,38305,
-    7,40135,37241,38305,    6,40138,    2,40141,35187,40142,35187,40141,
-    2,40146,    2,40147,38056,40141,37663,40138,    3,40138,40145,40157,
-40149,40157,40153,40157,    3,40139,40151,40165,40093,40165,36773,38305,
-37933,40171,37899,40173,37933,40170,35931,40170,  483,40179,37617,40170,
-  483,40183,37899,40170,37933,40187,  483,40187,37409,40170,    3,40193,
-  483,40171,35931,40197,37617,40197,37899,40197,    6,40170,37844,40205,
-    3,40205,35187,40208,35187,40205,    3,40212,    7,40171,40207,40217,
-40211,40217,40215,40217,40195,40217,    2,40217,40193,40227,37845,40217,
-40205,40231,37845,40170,    7,40235,37325,38305,    7,40238,    2,40241,
-    2,40240,    7,40239,35187,40247,    3,40249,    3,40248,    3,40247,
-35187,40254,    3,40246,37844,40247, 1368,40238,  586,40239, 1369,40238,
-37845,40238,40259,40269,40265,40269,  587,40239,    2,40238,    7,40276,
-40251,40277,    3,40238,40243,40283,35187,40282,40275,40287,    3,40239,
-40279,40291,40245,40291,40269,40291,    7,40290,40269,40299,40263,40291,
-    2,40239,40287,40305,40257,40305,40253,40305,40261,40305,40267,40305,
-10219,38305,    7,40316,    2,40318,    2,40319, 1368,40316, 1369,40316,
-    2,40317,40327,40329,    3,40317,40321,40333,40325,40333,    2,40316,
-    7,40338,40333,40341,    3,40316,40323,40345,  413,38305,    7,40349,
-  375,40349, 1217,38305,  483,40355, 1216,38305,    7,40359,  412,38305,
-  483,40363,36348,38305,    2,40366,36429,40369,38233,38305,    7,40373,
-25296,38305,    7,40377,  265,38305,27978,40381,30492,40380,   17,40380,
- 8495,40387,    6,40380,   11,40391,    7,40380,30091,40394,    7,40381,
-27021,40399, 9195,40399,40391,40399,40001,40399,21605,40398,    6,40381,
-40395,40411,40007,40411,   17,40411,21605,40381,    7,40418,   17,40419,
-  241,40380,  483,40425,21605,40380,    7,40429,30091,40380,    7,40432,
-   11,38305,18967,40436,  483,40439,  587,40436,  483,40443, 1369,40436,
-  483,40437,  587,40449,    3,40436,    3,40437, 9875,40455,20501,40455,
- 1011,38305,  483,40461,  587,40463,  587,40460,  483,40467,    9,40460,
- 9565,40471,    7,40461,  959,40475,  759,40475,   47,40475,  903,40460,
-    7,40483,   15,38305, 1369,40486, 1011,40489,  241,40486,  483,40493,
-    3,40486,  165,40497,    3,40487,  253,40501, 1471,40501,   53,40501,
-21605,38305,27533,40509,   15,40509,31103,40513, 1275,40509,    7,40508,
-23755,40519,39633,40519,27805,40519,26331,40519,25793,40519, 8495,40519,
-    7,40509,26219,40533,  305,40533,   25,40533,  713,40533,  265,40509,
-31103,40543,  265,40508,    7,40547,25367,38305,    6,40551,    7,40551,
-    6,40550,40555,40557,    7,40550,40553,40561,   17,38305,19917,40565,
-  587,40565,  265,40564, 8495,40571,  265,40565, 8861,40575,    3,40564,
-  113,40579,    3,40565,10109,40583,10108,40583,10108,40582,40585,40589,
-10109,40582,40587,40593, 1141,40583, 1447,40583,   33,40583,  903,38305,
-    7,40603, 1141,40605, 1447,40605,   33,40605, 1011,40602,    7,40613,
-18967,38305, 1108,40617, 1072,40617,  165,40617, 1291,40617,  524,40617,
-    9,40617, 1011,40628,   11,40616,  483,40633,   11,40617,  483,40636,
-  483,40617,   11,40641, 1011,40640,  587,40641,   11,40640,    9,40616,
-  587,40616,  483,40653,    7,40616, 1141,40657, 1447,40657,   33,40657,
- 1011,40617,21183,40665,    7,40665,  483,40664,    9,40664,  241,38305,
-  483,40675,   15,40674,  483,40679,    9,40675,    7,40674,  375,40685,
- 9805,40685,    7,40675,  265,40691,   59,40691,  331,40691, 1325,40691,
-  265,40674,  483,40701,    9,38305, 7963,40704, 7961,40707,27995,40704,
-27533,40711,17573,40704,10001,40715,13755,40705, 9377,40719,    1,40704,
-    3,40723,    1,40724,40705,40727,    7,40724,40729,40731,    7,40723,
-    3,40734,  586,40723,    6,40704,    3,40741,    6,40742,40705,40745,
-    0,40742,40747,40749,    0,40741,    3,40752,21604,40704,    3,40757,
-    7,40758,    7,40757,    3,40762,  586,40757, 1274,40704,    3,40769,
-    0,40770,    0,40769,    3,40774, 9377,40704,27533,40779,10001,40779,
-13755,40779,10001,40705,17573,40787, 9377,40787,27533,40705,27995,40793,
- 9377,40793,21605,40705,26715,40799,26865,40799,40761,40799,40765,40799,
-40731,40799,40737,40799,    6,40799,26719,40799,40739,40799,40767,40799,
-  587,40799,26625,40821,40723,40821,40757,40821, 1275,40705, 1991,40829,
- 3621,40829,40773,40829,40777,40829, 5299,40829,40749,40829,40755,40829,
-    1,40829, 4907,40829,17711,40829, 1011,40704, 9565,40851,  587,40704,
-39515,40855,39523,40855, 3507,40855, 1971,40855,    0,40855,40829,40865,
-40845,40855,21783,40855,23983,40855, 4625,40855,10603,40855,39533,40855,
-21605,40855,  713,40881,39489,40881,18967,40704, 1011,40705,18967,40889,
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-30091,41502,26331,41503, 8717,41503,23755,41503,27805,41503, 3785,41503,
-40957,41502,36212,41502,39633,41503,10055,41503, 4329,41503, 4311,41503,
-10351,41503,36773,41502,20103,41502, 8337,41502, 8997,41502, 1275,41503,
-   15,41503,18967,41541,35187,41502,  241,41544,  241,41502,35187,41548,
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-  483,42955, 1275,42811,  265,42810,40411,42961,30091,42960,21605,42810,
-26331,42967,25793,42967,23755,42967,27805,42967,39633,42967,42731,42967,
-41559,42967,41019,42967, 8495,42967,42731,42811, 1369,42986,  241,42810,
-  375,42991, 9805,42991,18967,42810, 1141,42997,   33,42997, 1447,42997,
-  265,42811,35187,43005, 9377,43005, 9533,43005,37145,43005,21605,42811,
-34311,43015,42619,43015,26625,43015,24545,43015, 9731,43015,    2,42810,
-    3,42810,    0,43028,43005,43031,  295,43029, 1108,43029,35927,43029,
-38155,43029,37611,43029,    9,43029, 1011,43044, 1011,43029,    9,43048,
-    2,42811,42831,43053,    5,43053,42829,43057,36256,43053,    9,43053,
-35187,43062,35187,43053,    9,43066,    3,42811,    5,43070,22807,43071,
-37663,43071,42613,43070,  483,43079,  241,43071,    9,43083,37845,42810,
-41559,43087,38389,43087,42731,43087,39633,43087,41019,43087,42613,42811,
-32805,43099,37845,43098,37845,43099,37844,43098,43105,43107,37844,43099,
-43103,43111,    3,43099, 1369,43115,    3,43098,  483,43119,   15,42811,
-20273,43123, 9617,43123,35187,42810,    7,43129,    2,43130,    2,43131,
-38305,43129,    3,43136,43135,43139,    3,43137,43133,43143, 1368,43129,
-43143,43147,   59,43129, 1325,43129,  331,43129,  265,43129,    2,43129,
-    7,43158,43143,43161,    3,43129,38305,43164,43135,43167,37408,38305,
-    7,43171,    2,43172,40999,43175,    2,43173,40101,43179,41017,43179,
- 1368,43171,40999,43185,   59,43171, 1325,43171,  331,43171,  265,43171,
-    2,43170,37783,43197,    2,43171,    7,43200,40999,43203,37617,43201,
-    3,43171,38305,43208,43179,43211,    3,38305,43129,43214,43135,43217,
-    1,43214, 1011,43221,42041,43221, 1418,43221,41941,43227,42035,43221,
-  669,43221,41941,43233,42089,43221,42129,43221, 1369,43221,   15,43240,
-41941,43243,   15,43221, 1369,43246,41941,43249,11989,43215,    9,43253,
-13737,43215,    9,43257,37357,43215,10257,43215,38118,43215,38132,43215,
-37544,43215,37409,43215,  483,43270,  113,43215,  587,43275,37345,43215,
-37241,43214,40993,43281,40993,43215,37241,43285,    9,43215,38057,43288,
-  483,43215,38057,43292,37409,43292,10289,43215,   15,43214,  165,43301,
-   11,43214,    9,43214,11251,43307, 5177,43307,   17,43214,  113,43313,
-   11,43215,  165,43215,    7,43214,    0,43321,    4,43322,    4,43321,
-    0,43326,35186,43321,  295,43321, 1108,43321,35927,43321,38155,43321,
-37611,43321,    9,43321, 1011,43342, 1011,43321,    9,43346,    7,43215,
-21604,43351,    1,43351,    3,43354,    3,43351,    1,43358,   15,43351,
-38305,43363,43353,43365,43357,43365,43361,43365, 1011,43363,37409,43214,
-43179,43375,41941,43215,37408,43379,    7,43379,35187,43382,35187,43379,
-    6,43386,    7,43386,    6,43387,43391,43393,    7,43387,43389,43397,
- 1011,43215,37408,43401,    7,43401,35187,43404,35187,43401,    7,43408,
-38057,43215,40097,43413,40969,43413,    7,43413,    9,43412,  483,43412,
-35187,43214,40305,43425,40275,43425,38305,43425,    6,43430,43413,43433,
-    6,43425,38305,43436,43413,43439,41941,43425,    6,43443,    7,43443,
-    6,43442,43447,43449,    7,43442,43445,43453, 1011,43425,    7,43457,
-37844,38305,42336,43461,42917,43461,42905,43461,39013,43461,40305,43461,
-40275,43461,37933,43461,42155,43474,42155,43461,37933,43478,    6,43460,
-41941,43461,    6,43485,    7,43485,    6,43484,43489,43491,    7,43484,
-43487,43495, 1011,43461,    7,43499,    2,38305,41603,43503,41686,43503,
-41825,43503,41828,43503,42541,43502,42579,43513,16936,43503,36400,43503,
-36439,43519,36348,43503,    6,43523,36413,43525,    6,43522,36439,43529,
-36439,43523,41744,43503,41688,43503,41605,43503,41706,43503,41620,43503,
-    1,43503, 1275,43544,    4,43544,    7,43544,41417,43551,    7,43545,
-39633,43555,41559,43555,42731,43555,41019,43555,    1,43502,41692,43565,
-41607,43565,41653,43565,41417,43570,41417,43565,41653,43574,41502,43565,
-41559,43579,41019,43565,    7,43582,41559,43585,    7,43583,41417,43589,
-    7,43565,41019,43593,41653,43595,41019,43592,41559,43599,    5,43502,
-21605,43603,42810,43604,42811,43605,43607,43609,42811,43604,42810,43605,
-43613,43615,41692,43503,35187,43618,41607,43503,35187,43622,41360,43503,
-41559,43627,41820,43503,41559,43631,41544,43503,41559,43635,35760,43503,
- 8315,43503,37408,43502,37783,43643,42538,43503,42601,43647,42553,43647,
-42555,43647,41742,43503,41417,43654,41486,43503,41653,43658,41417,43503,
-41827,43662,41742,43662,41653,43662,35187,43668,35187,43662,41653,43672,
-37783,43503,37325,43502,42795,43679,42579,43679,41502,43503,41559,43685,
-35187,43687,35187,43684,41559,43691,37241,43503,37409,43695,41019,43697,
-41381,43503,41653,43700, 1275,43503,    1,43704,35187,43704,    9,43705,
- 9731,43711,43221,43711,43549,43711,26625,43711,  587,43503,42811,43721,
-35895,43723,15879,43723, 4787,43723,41653,43503,    1,43731,41417,43733,
-41381,43730,41486,43730,41417,43730,35187,43740,35187,43730,41417,43744,
-    9,43502,36727,43749,36079,43749,37895,43749,41827,43503,41417,43756,
-    6,43502,39616,43761,39614,43761,39578,43761,39901,43761,41282,43761,
-41266,43761,41270,43761,39961,43761,39981,43761,35718,43761,39869,43781,
-41019,43761,35895,43784,15879,43784, 4787,43784,15879,43761,39489,43792,
-41019,43792, 4787,43761,39489,43798,41019,43798,35895,43761,39489,43804,
-41019,43804,  587,43761,35187,43810,39869,43813,35187,43761,  587,43816,
-39869,43819,  587,43817,39489,43823,41019,43823,39489,43761,15879,43828,
- 4787,43828,35895,43828,    7,43502,    6,43503,36348,43838,36439,43841,
-36348,43839,36429,43845,    7,43503,41817,43848,43817,43849,41019,43853,
-    4,43849,    0,43856,43784,43859,41019,43859,43761,43862,43761,43859,
-41019,43866,    0,43849,    4,43870,43784,43873,41019,43873,43761,43876,
-43761,43873,41019,43880,    1,43848,41417,43885,35186,43849,43784,43889,
-41019,43889,43761,43892,43761,43889,41019,43896,41816,43848,41559,43901,
-41019,43848,41559,43905,35187,43907,35187,43904,41559,43911,41019,43849,
-41827,43915,43851,43915,41742,43915,41653,43915,35187,43922,35187,43915,
-41653,43926,35187,43848,41417,43931,41019,43930,41559,43935,41019,43931,
-41653,43939,37409,43502,41354,43943,40165,43943,41019,43943,37241,43948,
-37241,43943,41019,43952,37408,43503,41417,43957,37663,43957,41019,43956,
-41559,43963,41019,43957,41653,43967,41816,43503,    6,43970,    7,43970,
-41559,43975,    6,43971,43975,43979,    7,43971,43973,43983,41417,43983,
-41019,43503,    1,43989,    7,43990,41417,43993,    7,43991,41559,43997,
-37408,43988,41559,44001,37408,43989,41381,44005,    7,43989,41381,44009,
-41486,44009,    1,44008,41417,44015,41417,44009,35187,44018,35187,44009,
-41417,44022,    7,43988,41559,44027,35187,44029,35187,44026,41559,44033,
-35187,43988,    6,44036,    7,44036,41559,44041,    6,44037,44041,44045,
-    7,44037,44039,44049,41417,44049,21605,43503,    7,44055,  265,44057,
-35187,43503,41692,44060,41607,44060,41502,44060,41559,44067, 1275,44060,
-41653,44060,41417,44072,36945,44061,41019,44077,41417,44060,41653,44080,
-    6,44061,41922,44085,43413,44085,41019,44085,36773,44090,36773,44085,
-41019,44094,    7,44061,41559,44099,42731,44099,39633,44099,41019,44099,
-    6,44060,44099,44109,    7,44060,41417,44113,41019,44112,41559,44117,
-44085,44113,41019,44113,41653,44123,41019,44060,    6,44126,    7,44126,
-41559,44131,    6,44127,44131,44135,    7,44127,44129,44139,41417,44139,
-36773,44061,41417,44145,    7,44145,41019,44149,35187,43502,41217,44153,
-41472,44153,29229,44153,41099,44153,36429,44153,42559,44153,41417,44153,
-37145,44166,37783,44153,37214,44153,41019,44173,    7,44153,41019,44177,
-37145,44179,37145,44176,41019,44183,37145,44153,41417,44186,    7,44186,
-41019,44191,38056,38305,41472,44195,41217,44195,41099,44195,29229,44195,
-36429,44195,42559,44195,35187,44195,    6,44209,43413,44211,41417,44195,
-37145,44214,37783,44195,37214,44195,41019,44221,    7,44195,41019,44225,
-37145,44227,37145,44224,41019,44231,37145,44195,41417,44234,    7,44234,
-41019,44239,    6,38305,42453,44243,42493,44243,42472,44243,42439,44243,
-42474,44243,42441,44243,42363,44243,42471,44256,42381,44243,42165,44243,
-42471,44262,42325,44243,42330,44243,42343,44243,42321,44243,42319,44243,
-42371,44243,42376,44243,42568,44243,42447,44243,42484,44243,42054,44243,
-42056,44243,44171,44243,43645,44243,43960,44243,44219,44243,43201,44243,
-37617,44298,43206,44243,38711,44243,43199,44243,42605,44243,40231,44243,
-43677,44243,40959,44243,10586,44243,10827,44243,42594,44243,42603,44243,
-42577,44243,42596,44243, 6664,44243, 6243,44243, 9780,44242,  566,44242,
-  566,44243,  567,44242,44337,44339,43517,44243, 9781,44242,42012,44243,
-36303,44242,36303,44243,26970,44242,26971,44242,43639,44243, 4593,44243,
- 6625,44358, 3113,44243, 3023,44243, 4736,44243, 6653,44243,42518,44243,
- 3251,44243,42516,44243,42486,44243,42449,44243,42496,44243,42456,44243,
-19257,44243,19243,44243,43425,44242,43413,44389,40511,44243,17452,44243,
-42085,44243,43707,44243,42087,44243,40961,44243,43709,44243,44071,44243,
-36099,44243,36098,44242,44409,44411,36099,44242,36098,44243,44415,44417,
-43605,44243,43222,44242,43223,44243,44423,44425,43222,44243,43223,44242,
-44429,44431,42199,44243,24081,44243,42181,44243,42383,44243,42435,44441,
-42401,44243,42177,44243,43547,44243,    5,44242,42283,44451,25380,44451,
-42155,44455, 1369,44451,21605,44458,42155,44461,21605,44451, 1369,44464,
-42155,44467,42373,44243,37145,44470,42561,44243,37145,44474,42579,44474,
-42327,44243,37145,44480,27514,44243,42490,44243,35187,44486,42451,44243,
-35187,44490,  413,44243,32805,44243,42155,44496,28547,44243,42064,44243,
-42138,44243,40517,44243,40543,44243,30294,44243,38004,44243,43461,44513,
-38232,44243,42155,44517,38005,44243,42155,44521,30749,44243, 9780,44243,
-44345,44527,26970,44243,44355,44531, 6625,44243, 4593,44534,   33,44535,
- 9781,44243,44333,44541,25005,44243,26971,44243,44353,44547,25185,44243,
-25589,44243,42074,44243,42152,44243,10831,44243,   77,44243,  120,44243,
-  506,44243,38041,44243, 5101,44243,16989,44243,10511,44243, 4931,44243,
- 5267,44243,16981,44243,13017,44243,12705,44243,13673,44243,18391,44243,
-18617,44243,14599,44243, 9366,44243,36302,44243,18217,44243,42332,44243,
-42435,44599,42570,44243,42435,44603,42426,44243,42435,44607,41539,44243,
-41720,44243, 9132,44243, 1216,44243,36302,44242,    3,44618,44351,44621,
-30748,44243,30748,44242,44525,44627,30749,44242,44625,44631,16931,44243,
-35931,44243,41941,44636,39600,44243,42500,44243,18929,44243,38669,44243,
-38677,44243,17019,44243,39941,44243,39955,44243,27021,44243,  483,44656,
-41941,44656,37844,44242,44351,44663,41653,44243,  483,44666,43413,44243,
-43425,44671,42514,44243,42361,44674,42368,44243,42471,44678,42361,44243,
-42579,44682,42514,44682,42471,44682,35187,44688,35187,44682,42471,44692,
-20234,44243, 8444,44243,  567,44243,44335,44701,16937,44243,   11,44705,
- 1369,44705,26625,44243,41941,44710,41941,44243,37899,44714,37617,44714,
-35931,44714,27021,44714,26625,44714, 9195,44714, 9731,44714,43957,44243,
-37663,44730,20103,44243,  483,44734, 8337,44243,  483,44738, 9533,44243,
- 4727,44243,   25,44744,10527,44243,   25,44748, 4541,44243,38128,44243,
-38057,44243,42155,44757,37145,44759,37145,44756,42155,44763,  587,44756,
-37845,44243,43461,44769,36773,44771,36773,44768,43461,44775,   25,44243,
-10527,44778, 4727,44778,  113,44778, 9195,44243,41941,44786,  483,44786,
-37782,44243,43197,44793,43643,44793,38709,44793,17451,44243, 1011,44800,
-35688,44243,36910,44243,36923,44243,37899,44243,41941,44810,37617,44243,
-41941,44814,43201,44814, 9731,44243,41941,44820, 8997,44243,  483,44824,
-   66,44243,   33,44829,  483,44243,27021,44832,30091,44832,  241,44832,
- 9195,44832,41653,44832, 8997,44832,42471,44832,39489,44832,20103,44832,
- 8337,44832,36773,44832,  903,44243, 1011,44856,18967,44243,  567,44861,
-  566,44860,44863,44865,  566,44861,  567,44860,44869,44871,  241,44243,
-  483,44874,42425,44243,42378,44243,42435,44881,35187,44883,35187,44880,
-42435,44887, 1369,44881,36773,44243,37845,44892,43461,44895,  483,44892,
-37845,44893,41019,44901,37145,44243,42327,44904,42373,44904,42561,44904,
-38057,44904,42155,44913,42341,44243,42471,44916,30091,44243,  483,44920,
-  113,44243,   25,44924,35187,44924,17125,44243,37663,44243,43957,44932,
-39489,44243,  483,44936,39943,44243, 1369,44941,  587,44243,43215,44945,
-35895,44947,15879,44947, 4787,44947,38057,44944, 8449,44243,20237,44243,
-  265,44242,40399,44961,   11,44961,42471,44243,42165,44966,42363,44966,
-42341,44966,42368,44966,42361,44966,35187,44976,  483,44966,35187,44966,
-42361,44982,20834,44243, 1011,44243,17451,44988,35187,44988,  903,44988,
-20763,44988,20763,44243, 1011,44998,  257,44243,42579,44243,42561,45004,
-42361,45004,    2,44242,39616,45011,39614,45011,39578,45011,39901,45011,
-41282,45011,41266,45011,41270,45011,39961,45011,39981,45011,35718,45011,
-39869,45031,41019,45011,35895,45034,15879,45034, 4787,45034,15879,45011,
-39489,45042,41019,45042, 4787,45011,39489,45048,41019,45048,35895,45011,
-39489,45054,41019,45054,  587,45011,35187,45060,39869,45063,35187,45011,
-  587,45066,39869,45069,  587,45067,39489,45073,41019,45073,39489,45011,
-15879,45078, 4787,45078,35895,45078,    3,44242,36302,45087,44349,45089,
-35187,45086,44351,45093,    2,44243,   14,45097,    5,45097,    6,45100,
-    6,45097,    5,45104,21605,45097,38305,45109,45099,45111,45103,45111,
-45107,45111,43215,45097,43325,45119,43329,45119,35895,45119,15879,45119,
- 4787,45119,43331,45119,35187,45119,43321,45133,35187,45096,39313,45137,
-40157,45137,43281,45137,43215,45137,37241,45145,    3,44243,42539,45148,
-38305,45149,37408,45152,37408,45153,45067,45149,41019,45159,    4,45149,
-    0,45163,38305,45163,    0,45162,45034,45169,41019,45169,45011,45172,
-45011,45169,41019,45176,45119,45169,    0,45149,38305,45183,    4,45182,
-45034,45187,41019,45187,45011,45190,45011,45187,41019,45194,45119,45187,
-    0,45148,38305,45148,    1,45148,45176,45205,45194,45205,45169,45205,
-45011,45210,45187,45205,45011,45214,45159,45205,45011,45205,45169,45220,
-45187,45220,35186,45148,35186,45149,38305,45229,    7,45231,45220,45229,
-45205,45229,45011,45236,45034,45229,41019,45229,45011,45242,45011,45229,
-45205,45246,41019,45246,45119,45229,    1,45149,45165,45255,45011,45257,
-45167,45255,45011,45261,    5,45149,45185,45265,45011,45267,43171,45149,
-37617,45271,42538,45148,42435,45275,37409,45148,38709,45279,43197,45279,
-45155,45279,43643,45279,42155,45148,42435,45289,35187,45291,35187,45288,
-42435,45295, 1369,45289, 1011,45149,  483,45301,   11,45148,   33,45305,
-37409,45149,45157,45309,43957,45309,   11,45149,   25,45315,35187,45315,
-42155,45149,42579,45321,45151,45321,42514,45321,42471,45321,35187,45328,
-35187,45321,42471,45332,45066,45149,45201,45337,45203,45337,35187,45149,
-45201,45343,45011,45345,45203,45343,45011,45349,45011,45342,45201,45353,
-45203,45353,45011,45149,35187,45358,45201,45361,45203,45361,35187,45148,
-40217,45367,45233,45367,42155,45366,42435,45373,42155,45367,42471,45377,
-37845,44242,41922,45381,43413,45381,44595,45381,44993,45381,41019,45381,
-36773,45390,36773,45381,41019,45394,38056,44243,39313,45399,40157,45399,
-43281,45399,43215,45399,37241,45407,37844,44243,40217,45411,42155,45410,
-42435,45415,42155,45411,42471,45419,42538,44243,    3,45422,42435,45425,
-    3,45423,42361,45429,42155,44243,32805,45432,37845,45432,37845,45433,
-37844,45432,42435,45441,45439,45441,37844,45433,42341,45447,45437,45447,
-    3,45433,42341,45453,42368,45453,42361,45453,35187,45458,35187,45453,
-42361,45462,  483,45453,    3,45432,42435,45469,35187,45471,35187,45468,
-42435,45475, 1369,45469,35187,45432,    3,45480,42435,45483,    3,45481,
-42361,45487,   11,44243, 8861,45491,    3,45490,   33,45495,    3,45491,
-  113,45499,  331,45491, 1325,45491,   59,45491,35187,44243,42490,45508,
-42451,45508,38305,45508,    7,45515,    2,45517,    2,45516,    2,45515,
-    7,45522, 1368,45515, 1011,45508,45381,45529,42378,45508,42435,45533,
-42471,45508,42361,45536,37285,45509,41019,45541,42361,45508,42471,45544,
-  113,45508,    2,45509,41354,45551,40165,45551,38305,45551,    7,45557,
-41019,45551,37241,45560,37241,45551,41019,45564,    3,45509,45519,45569,
-    2,45508,40157,45573,39313,45573,43281,45573,43215,45573,37241,45581,
-    3,45508,40217,45585,45521,45585,45525,45585,45559,45585,45527,45585,
-42155,45584,42435,45597,42155,45585,42471,45601,42155,45508,    3,45604,
-42435,45607,    3,45605,42361,45611,37409,44243,43503,45615,37663,45617,
-    3,45615,43201,45621,    3,45614,38709,45625,43197,45625,43643,45625,
-35187,44242,    3,45632,44351,45635,35187,38305,37214,45639,    2,45641,
-39019,45643,39021,45641,37286,45639,35890,45638,35891,45639,45651,45653,
-35891,45638,35890,45639,45657,45659,38152,45638,38153,45639,45663,45665,
-38296,45638,38297,45639,45669,45671,38153,45638,38152,45639,45675,45677,
-38297,45638,38296,45639,45681,45683,37283,45639,42675,45639,37282,45639,
-42674,45639,37899,45638,37885,45695,38293,45639,37885,45639,37899,45701,
-44945,45639,38292,45639,44944,45639,37287,45639,38173,45638,38172,45639,
-45713,45715,38303,45638,38302,45639,45719,45721,38173,45639,38172,45638,
-45725,45727,38303,45639,38302,45638,45731,45733,45096,45639,45149,45639,
-    7,45738,45367,45741,45097,45639,37241,45639,    2,45747,    2,45746,
-  587,45746,42613,45639, 1369,45754,38271,45639, 1369,45758,44243,45639,
-    2,45763,    2,45762,  587,45762,  136,45639,  137,45639, 1530,45638,
-  842,45638,  669,45639, 1419,45639,  843,45639,39085,45783,45777,45783,
- 1531,45639,45775,45789, 1530,45639,  843,45638,  842,45639,45795,45797,
- 1531,45638,45793,45801, 1368,45639,45411,45805,40999,45805,45367,45805,
-45585,45805,42613,45805,37845,45805,44243,45817,  586,45639,39847,45821,
-39142,45821,39085,45821,  483,45826,37241,45821,  483,45821,39085,45832,
-  586,45638,38675,45837,39823,45837,39783,45837,39749,45837,  483,45845,
- 1418,45639,  668,45639,  587,45638,37885,45853,37202,45853,37145,45853,
-  483,45858,  483,45853,37145,45862,  587,45639,37241,45866,44243,45866,
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-35761,45881,45883,45885,35760,45881,35761,45880,45889,45891,42613,45880,
-38271,45880,   15,45880,    9,45639,    2,45900,    2,45901,  587,45900,
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-44060,45917,40957,45917,44061,45917,43502,45917,37844,45917,35187,45917,
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-    2,45942,45937,45945,37845,45942,    2,45943,45933,45951,45929,45951,
-  587,45943,45149,45917,37145,45959,45227,45959,37845,45917,38305,45964,
-43503,45917,35187,45968,  375,45917,45148,45917,    2,45917,40101,45977,
-41017,45977,38305,45976,45937,45983,44904,45977,45569,45977,43375,45977,
-39019,45977,44243,45977,37145,45994,37145,45977,44243,45998,    3,45917,
-35187,46002,45951,46005,44243,46002,    3,45916,45943,46011,    7,46011,
-38305,46015,45977,46017,45994,46011,45959,46011,45967,46011,45919,46011,
-45949,46011,45925,46011,37241,46011,45977,46011,44243,46034,44243,46011,
-45977,46038,    2,45916,45931,46043,40999,46043,45975,46043,45367,46043,
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-37145,46087,45977,46112,45977,46087,37145,46116,    3,46087,35187,46120,
-46043,46123,45805,46123,45917,46121,37145,46129,45917,46087,35187,46132,
-    2,46135,    2,46134,38057,46132,38056,46132,    2,46133,46141,46145,
-    3,46133,46139,46149,46143,46149,    2,46132,35187,46154,46149,46157,
-46149,46155,    3,46132,46137,46163,46145,46163,    3,45639,    5,46169,
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-45945,46169,43679,46169,45927,46169,40277,46169,45749,46169,45765,46169,
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-46179,46219,46181,46219,41019,46219,45639,46218,    2,46227,38305,46219,
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-43503,46169,    6,46256,    7,46256,    6,46257,46261,46263,    7,46257,
-46259,46267,  241,46169,    7,46270,    2,45638,41472,46275,41217,46275,
-46175,46275,46211,46280,46177,46275,46211,46284,46212,46275,46214,46275,
-46221,46275,46223,46275,46173,46275,45930,46275,46043,46299,46045,46275,
-46216,46275,46225,46275,41099,46275,46032,46275,45711,46275,46200,46275,
-45745,46275,46248,46275,46245,46275,35187,46275,45917,46322,46043,46325,
-45917,46323,46011,46329,45830,46275,29229,46275,45773,46275,36429,46275,
-45895,46275,45897,46275,45687,46275,45693,46275,45705,46275,45707,46275,
-45849,46275,45779,46275,42559,46275,45899,46275,45915,46275,45757,46275,
-45761,46275,45941,46275,41417,46275,37145,46368,45821,46275,37241,46372,
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-37241,46275,46011,46388,46169,46388,46247,46388,45821,46388,46211,46275,
-46175,46398,46177,46398,37145,46398,37783,46275,44243,46407,45917,46275,
-35187,46410,46043,46413,37214,46275,41019,46417,46218,46275,46179,46421,
-46181,46421,41019,46421,    7,46275,41019,46429,37145,46431,46169,46429,
-46175,46435,46177,46435,37145,46435,37145,46428,41019,46443,46169,46428,
-46179,46447,46181,46447,41019,46447,37145,46275,41417,46454,46211,46454,
-    7,46454,41019,46461,46169,46275,35187,46464,    6,46467,    6,46466,
-38305,46465,46211,46473,38271,46464,44243,46465,38270,46464,37241,46464,
-    6,46465,46477,46485,    7,46465,46471,46489,46481,46489,    6,46464,
-46473,46495,35187,46494,46489,46499,46489,46495,    7,46464,46179,46505,
-46181,46505,46469,46505,46485,46505,41019,46505,    2,45639,42671,46517,
-39429,46517,44814,46517,44810,46517,44636,46517,37241,46516,40077,46517,
-44243,46516,46003,46517,37241,46535,    9,46516,44243,46517,37617,46540,
-37899,46540,35931,46540,35931,46517,44243,46548,37617,46517,44243,46552,
-37899,46517,44243,46556,    7,46517,44243,46561,    7,46516,46107,46565,
-46123,46565,46095,46565,40999,46565,45585,46565,45411,46565,45367,46565,
-42613,46565,37845,46565,46087,46583,44243,46583,37845,46517,46211,46589,
-41417,46589,    7,46589,41019,46595,    3,45638,45951,46599,45942,46599,
-46011,46603,46013,46599,46066,46599,46540,46599,40305,46599,46529,46599,
-45751,46599,46533,46599,45767,46599,46580,46599,46563,46599,45649,46599,
-45737,46599,38305,46599,45917,46630,46011,46633,45917,46631,46043,46637,
-45814,46599,45771,46599,45869,46599,45871,46599,45689,46599,45691,46599,
-45699,46599,45709,46599,45851,46599,45781,46599,40275,46599,46539,46599,
-45903,46599,45873,46599,45907,46599,45753,46599,45769,46599,45957,46599,
-45805,46599,42613,46676,46043,46599,42613,46680,46565,46599,42613,46684,
-45867,46599,37241,46689,42613,46599,46043,46692,46565,46692,45805,46692,
-45917,46599,38305,46700,46011,46703,46560,46599,44243,46599,46517,46708,
-    7,46599,38305,46713,46517,46715,46517,46712,41941,46599,    6,46721,
-    7,46721,    6,46720,46725,46727,    7,46720,46723,46731, 1011,46599,
-    7,46735,46517,46599,38305,46738,35187,46739,    6,46742,    6,46743,
-44243,46738,38271,46739,38270,46739,37241,46739,    6,46739,35187,46756,
-46741,46757,    7,46739,41019,46763,46747,46763,    6,46738,46763,46769,
-46751,46769,    7,46738,46759,46775,46745,46775,46757,46775,46753,46775,
-    6,45639,    7,45638,43214,46787,45977,46789,38305,46787,    3,46793,
-46043,46795,46565,46795,45805,46795,    3,46792,45977,46803,   59,46787,
- 1325,46787,  331,46787,  265,46787,    2,46787,    7,46814,46795,46817,
-    3,46787,38305,46820,45977,46823,46785,46787,35187,46827,    2,46828,
-    2,46829,38057,46827,38056,46827,    2,46827,35187,46838,    3,46827,
-46833,46843,    2,46826,46843,46847,46835,46847,    3,46826,46841,46853,
-46831,46853,46839,46853,46837,46853,    0,    6,13135,46863,13169,46864,
- 4871,46863, 4893,46868,13172,46863, 4894,46863,13136,46863,13143,46877,
- 4872,46863, 4879,46881,13145,46863, 4881,46863,37417,46863,38056,46888,
-38057,46889,46891,46893,38057,46888,38056,46889,46897,46899,17176,46863,
-17380,46863,16950,46863,17058,46863,16948,46863,17056,46863,16974,46863,
-17072,46863,16996,46863,17086,46863, 3348,46863,18291,46863, 7316,46863,
- 8455,46863, 8343,46863, 8353,46863,13139,46863,13175,46863,13155,46863,
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- 5757,46863, 5453,46863, 5471,46863, 5455,46863, 4863,46959, 5507,46863,
-12569,46863,12387,46863,12551,46966,12552,46863,16995,46863,16941,46863,
-16977,46974,16978,46863,17017,46862,17016,46862,19836,46863,19857,46985,
-19815,46863,    4,46988,19857,46991,    4,46989,19843,46995,27930,46863,
-27895,46999,27857,46863,    4,47002,27895,47005,    4,47003,27907,47009,
-36303,46862,36325,47013,27128,46863, 9136,46863,27266,46863,27163,46863,
-34310,46863,34447,47025,46516,46863,46599,47029,33454,46863,33368,46863,
-28027,46863,28111,46863,28117,46863,26928,46863,24253,46863,30569,46863,
-30316,46863,28213,46863,26525,46863, 9137,46863,  273,46863, 1477,46863,
-  281,46863,17011,46863, 5043,46863,15503,46863, 8997,47066,24558,46863,
-26575,46863,41877,46863,  120,46863,   77,46863,16977,46863,16941,47080,
- 9262,46863,14813,46863,26605,46863,41923,46863, 8843,46863,37131,46863,
-41907,46863,26591,46863,41893,46863,37113,46863,20255,46863, 9288,46863,
- 8697,46863, 9275,46863, 8784,46863,19877,46863,41867,46863,20043,46863,
-21376,46863,21485,46863,19787,46863,19391,46863,19299,46863,19271,46863,
-19283,46863,17010,46863, 5042,46863,36518,46863,40664,46863,17017,46863,
-46983,47143, 1516,46863,  948,46863,17016,46863,46981,47151,16972,46863,
-  903,47154,17070,46863, 1011,47158,17175,46863,  903,47162,17379,46863,
- 1011,47166, 4213,46863,  375,47170, 8757,46863,  375,47174, 4266,46863,
-16865,46863,16873,46863,16867,46863,12642,46863, 8896,46863,14740,46863,
- 8355,46863,  264,47193,  265,47192,47195,47197,  264,47192,  265,47193,
-47201,47203,14515,46863,14517,46863,14519,46863,20201,46863,36979,46863,
-20152,46863,36898,46863,20239,46863,37095,46863,21522,46863,38266,46863,
-17082,46863,  903,47228,16990,46863,16943,47233, 1011,47232,35780,46863,
-29644,46863,43412,46863,15628,46863, 9044,46863,  264,47247,  265,47246,
-47249,47251,  264,47246,  265,47247,47255,47257,12484,46863,12486,46863,
-12488,46863,12551,46863,12387,47266,12547,46863,12633,46863,12507,46863,
-12497,46863,12501,46863,13381,46863,13169,46863,13135,47282, 4893,46863,
- 4871,47286,12563,46863,27255,46863,  483,47292, 9287,46863,  483,47296,
-13119,46863,  264,47300,13143,47303,  264,47301,13169,47307, 4863,46863,
-  264,47310, 4879,47313,  264,47311, 4893,47317, 7315,46863,  413,47320,
-  264,47320,  264,47321,  265,47320,47327,47329,  265,47321,47325,47333,
-14653,46863,  375,47336,16875,46863,12504,46863,19478,46863,35766,46863,
-20044,46863,36534,46863,12566,46863,12391,47353,33338,46863,34447,47357,
-45866,46863,46599,47361,25545,46863,40675,46863, 1413,46863,  922,46863,
- 1281,46863,  247,46863,36303,46863,38299,47377,37897,47377,36335,47377,
-35893,47377,20035,46863,   11,47387,   11,47386,36527,46863,  587,47392,
-24545,46863,  483,47396,35761,46863,  903,47400,19475,46863, 1011,47404,
- 1086,46863,  934,46863, 1216,46863,17049,47412,16937,47412, 9766,46863,
- 5519,46863, 8389,46863, 8861,46863, 3345,47424,12377,47424, 8337,46863,
-  375,47430, 8374,46863, 8365,46863,20169,46863,36921,46863, 8453,46863,
- 4863,47443,13119,47443, 9072,46863, 9105,46863,  305,46863,12377,47452,
- 9731,46863,  483,47456, 8997,46863,15503,47460,  265,47460,  265,47461,
-  257,47460,  264,47469,  265,47468,47471,47473,  264,47468,  265,47469,
-47477,47479,  375,47460,15029,46863,12377,47484,  375,46863,27021,47488,
-30091,47488, 9195,47488, 8757,47488, 4213,47488,14653,47488,20103,47488,
-36773,47488, 8337,47488, 8997,47488,  241,47488, 6578,46863,  394,46863,
-  828,46863,  128,46863,  299,46863,  705,46863,  101,46863,28715,46863,
-21315,47526,  165,46863,  903,47530,43215,46863,38057,47534, 1505,46863,
- 1011,47538,30091,46863,  375,47542,  113,46863,   25,47546,    9,47546,
-  803,46863,  483,47552,  518,46863,  504,46863,  508,46863,  645,46863,
-  623,46863,  659,46863,  510,46863,  241,47568,  506,46863,    9,47572,
-  244,46863,  483,47576,  265,46863, 8997,47580, 5041,47580,17009,47580,
- 8861,47581,  241,46863,  265,47591, 6515,47590,  375,47590,  510,47590,
-  483,47590,    9,47600,    9,47590,  483,47604, 1011,46863,16990,47608,
-17070,47608,17379,47608,40617,47608,16937,47608,  903,47618, 1505,47608,
-17049,47608,  903,47624,21315,47608,19475,47608,  587,47608,  903,47608,
-16937,47634,17049,47634,  903,46863,16937,47641,16977,47643,17082,47640,
-16972,47640,17175,47640,32805,47640,36349,47640,17049,47640, 1011,47656,
-  165,47640,16937,47640,16943,47663, 1011,47662,38057,47640,35761,47640,
-  483,47640,   11,47640, 1011,47640,17049,47676,16937,47676,10527,47640,
- 4727,47640, 6515,47640, 6564,46863, 6685,46863,35187,47690,   11,47691,
- 6515,46863,  241,47696,  903,47696,  587,47697,10761,46863,10592,46863,
- 4738,46863,13857,46863,  483,47710,10527,46863,  903,47714,    9,47714,
- 3345,46863,  413,47720, 8861,47720, 1369,47721,  341,47721, 3747,46863,
- 1369,47731, 3689,46863, 1369,47735,17000,46863,17090,46863, 2691,46863,
- 2777,46863, 2793,46863, 2831,46863, 6486,46863, 4415,46863,10493,46863,
-13941,46863,10901,46863, 4727,46863,  903,47760,    9,47760, 4819,46863,
-  483,47766, 6703,46863, 6623,46863, 5759,46863, 7823,46863, 7813,46863,
- 7761,46863, 7705,46863, 7735,46863, 7727,46863,13904,46863,10600,46863,
- 4742,46863, 4822,46863, 2875,46863, 2865,46863, 2961,46863, 2949,46863,
- 2919,46863, 3645,46863, 3609,46863, 3467,46863,17102,46863,17104,46863,
- 1369,47815, 5041,46863,  265,47819,  265,47818, 4919,46863,  483,47824,
-17100,46863,17009,46863,  265,47831,  265,47830,17099,46863,  483,47836,
- 4920,46863, 6441,46863,  483,47842,17123,46863, 3353,46863, 3691,46863,
-10154,46863, 3777,46863, 2847,46863, 2881,46863, 2933,46863, 2929,46863,
- 2967,46863, 5271,46863, 4923,46863, 3355,46863, 3031,46863, 3121,46863,
-20819,46863,37537,46863,20952,46863,37748,46863,20885,46863,  483,47884,
-37663,46863,    9,47888,11529,46863, 1010,46862,23717,47895,24522,47895,
-24447,47895,23939,47900,23939,47895,24447,47904,22956,47895,23651,47909,
-21605,47895,   17,47913,23939,47915,   17,47912,23651,47919,   17,47895,
-21605,47923,24447,47925,21605,47922,23651,47929,  264,46862,47135,47933,
-47823,47933,47835,47933,47137,47933,47587,47933,47585,47933,47465,47933,
-47583,47933,47019,47933,47581,47933,17009,47953, 5041,47953, 8997,47953,
-  265,46862,47063,47961,47065,47961,47055,47961, 8997,47961, 5041,47961,
-17009,47961, 8495,47961,  241,47961,  241,46862,  240,46863,  265,47981,
-    1,47982,    0,47982, 5521,47983, 5520,47982,47989,47991, 5520,47983,
- 5521,47982,47995,47997,    0,47983,47985,48001,    1,47983,47987,48005,
-  264,46863,15193,48009,15475,48009,15579,48009,13119,48008,13143,48017,
- 4863,48008, 4879,48021,47972,48009,47970,48009,47821,48009,47833,48009,
-13507,48009,47968,48009,47467,48009,   53,48009, 1471,48009, 8997,48009,
-47961,48042,  253,48009,17009,48009,47961,48048, 5041,48009,47961,48052,
-15437,48009, 8997,48057,20501,48009,47961,48009,17009,48062, 5041,48062,
- 8997,48062,20219,48009,37019,48009,19513,48009,35843,48009,20697,48009,
-37377,48009,13119,48009,13135,48083, 4863,48009, 4871,48087,18967,48009,
-  483,48091, 1369,48009, 9875,48009, 8401,48009, 9955,48009,10273,48009,
- 4137,48009, 3863,48009, 4063,48009,  241,48009,  413,46863, 3345,48112,
- 7315,48112,17049,48112,16937,48112,12377,46863, 8861,48122,15029,48122,
-  305,48122,  713,48122,   25,48122,  587,48123,12387,48135,   11,48123,
-  257,48123,  253,48123, 1471,48123,   53,48123, 1369,48123,  257,48122,
-  587,48122,12391,48153,  257,46863, 9136,48156, 9137,48156,  264,48157,
-48159,48163,17827,48156,48163,48167,  413,48156,    1,48170,  264,48156,
- 8997,48175,  241,48175,    1,48179,  265,48157, 8997,48183,48175,48184,
- 4425,48183,48161,48183,48176,48183,48175,48183, 8997,48194, 5579,48183,
-17873,48183, 1791,48183,48173,48183,48181,48183,  265,48156, 8997,48208,
-48163,48211,48163,48209, 8997,48215, 8997,48156,  265,48218,48163,48221,
-  265,48219,48175,48225,12377,48156,36925,46863,20177,46863, 8383,46863,
- 8385,46863,   88,46863,   11,48239,37409,48239,  566,46863,27021,48245,
- 9195,48245,20501,48245, 9377,48245, 9875,48245,  587,48245,20763,48245,
-  653,46863,   11,48261,  289,46863,  587,48265,36349,46863,  903,48268,
-40617,46863, 1011,48272,   66,46863,   33,48277,20217,46863,37017,46863,
-37845,46863,38057,46863,  903,48286,43215,48286,  155,48286,21315,46863,
-  483,48294, 1011,48294,28715,48294, 1347,48294, 1347,46863,21315,48304,
-  155,46863,38057,48308,21378,46863,38134,46863,20103,46863,  375,48316,
-36773,46863,  375,48320,  713,46863,12377,48324,   25,46863,  113,48328,
-12377,48328,26625,46863,  483,48334,10107,46863,38056,48338,38056,48339,
-38057,48338,48343,48345,38057,48339,48341,48349,    3,48339,    3,48338,
- 9195,46863,  375,48356,27021,46863,  375,48360,   19,46863,   59,48365,
-32805,46863,    4,48368,34447,48371,  903,48368,    9,48368,    4,48369,
-33871,48379,   11,48368,34447,48383,45639,46863,    2,48386,46599,48389,
-    2,48387,46169,48393,  587,48386,46599,48397,36256,46863,35187,46863,
- 6685,48402,    9,48402,  483,46863,27255,48408,26625,48408,24545,48408,
- 9287,48408,21315,48408,  903,48408, 9731,48408,13857,48408,  803,48408,
-  244,48408,17049,48408, 6441,48408, 4819,48408,17099,48408, 4919,48408,
-    9,48408,  241,48440,  241,48408,    9,48444,20885,48408,    5,48408,
-27021,48451, 9195,48451,20501,48451, 9377,48451, 9875,48451,  587,48451,
-20763,48451,    9,46863,32805,48466,10527,48466,  113,48466,  506,48466,
-16937,48466, 4727,48466,  483,48466,  241,48480,  241,48466,  483,48484,
-37663,48466,  265,48467,   11,48491,    3,48466,   11,48495,37409,48495,
-35187,48466,19917,46863,18967,48503,    5,48504,    5,48505,21036,48503,
-21037,48503,    4,48503,48509,48515,    5,48503,18967,48518,    4,48502,
-48521,48523,48507,48523,48511,48523,    5,48502,48513,48531,  587,46863,
-12377,48535,12551,48537,45639,48535,46275,48541,12377,48534,12391,48545,
-36527,48534,45639,48534,46599,48551,  265,48535,17827,48555, 1011,48534,
-   11,46863,32805,48561,34003,48563,20035,48560,32805,48560,34447,48569,
-  903,48560, 1275,48561,    9,48575,    3,48560,   33,48579,    3,48561,
-  113,48583,16937,46863, 1216,48586,  413,48586,21036,48586,21037,48586,
-21036,48587,48595,48597,21037,48587,48593,48601,  903,48587,16941,48605,
- 1011,48586,  903,48608,  903,48586,16943,48613, 1011,48612,    9,48586,
-17049,46863, 1216,48620,  413,48620,  903,48620, 1011,48626, 1011,48620,
-  903,48630,  483,48620,    2,48620,    3,48620, 1369,48639,    2,48621,
-    3,48621,  483,48645,    2,46862,    6,48649,    4,48651,    5,48649,
-    9,48655,21604,48657,21604,48656,21605,48657,48661,48663,21605,48656,
-48659,48667,    5,48648,23717,48671,24522,48671,24447,48671,23939,48676,
-23939,48671,24447,48680,22956,48671,23651,48685,   17,48671,21605,48689,
-24447,48691,21605,48688,23651,48695,21605,48671,   17,48699,23939,48701,
-   17,48698,23651,48705,   19,48649,   12,48649,    9,48649,   11,48712,
-   11,48649,    9,48716,21605,48649,48652,48720,48653,48721,48723,48725,
-48653,48720,48652,48721,48729,48731,    3,46862,    5,48735,    4,46862,
-19975,48739,19365,48739,19221,48739,19917,48739,10107,48747,  587,48739,
-    5,46862,25451,48753,42283,48753,19739,48753,    0,48753,    3,48761,
-25380,48753, 7971,48765,42155,48765,  164,48753,48353,48771,20763,48753,
- 1011,48775, 1010,48774,48777,48779, 1010,48775, 1011,48774,48783,48785,
-    2,48753,   17,48788,48353,48791,    2,48752,23717,48795,24522,48795,
-23939,48795,24447,48800,24447,48795,23939,48804,22956,48795,23651,48809,
-21605,48795,   17,48813,23939,48815,   17,48812,23651,48819,   17,48795,
-21605,48823,24447,48825,21605,48822,23651,48829, 1369,48753,21605,48832,
- 7971,48835,42155,48835,21605,48753, 1369,48840,42155,48843, 7971,48843,
-   17,48753,37844,48848,48762,48848,48763,48849,48853,48855,37844,48849,
-48763,48848,48762,48849,48861,48863,37845,48848,48859,48867,37845,48849,
-48851,48871,    2,48849,48355,48875,47853,48875,    2,48848,48353,48881,
-    5,46863,  374,48884,  374,48885,  375,48884,48889,48891,19381,48885,
-19380,48884,48895,48897,19381,48884,19380,48885,48901,48903,20812,48884,
-20813,48884,20812,48885,48909,48911, 1197,48885,21604,48915,21604,48914,
-21605,48915,48919,48921,21605,48914,48917,48925,  375,48885,48887,48929,
-20813,48885,48907,48933,20501,48885, 1011,48937,27021,48885,  483,48941,
- 9195,48885,  483,48945, 9377,48885,  483,48949, 9875,48885, 1011,48953,
-  587,48885,  483,48957, 1369,48885, 1011,48961,38057,48961,20763,48885,
-  483,48967,  903,48885,  375,48971,  483,48884,27021,48975, 9195,48975,
-20501,48975, 9377,48975, 9875,48975,  587,48975,20763,48975,18967,48885,
-  483,48991,  165,48991,    2,48884,48961,48997,    3,48884,13118,49000,
- 4862,49000,13118,49001,13119,49000,49007,49009, 4863,49000, 4862,49001,
-49013,49015,15193,49001,15475,49001,15579,49001,13507,49001,20501,49001,
-  253,49001,15437,49001, 8997,49031,20219,49001,37019,49001,19513,49001,
-35843,49001,20697,49001,37377,49001,13119,49001,49003,49047, 4863,49001,
-49005,49051,  241,49001, 9875,49001,   53,49001, 1471,49001, 8401,49001,
- 9955,49001,10273,49001, 4137,49001, 3863,49001, 4063,49001, 1369,49001,
-18967,49001,  483,49077,    2,48885,    1,49081,    7,49082,49000,49084,
-49001,49085,49087,49089,49000,49085,49001,49084,49093,49095,    7,49081,
-    1,49098,49000,49100,49001,49101,49103,49105,49000,49101,49001,49100,
-49109,49111,    1,49080,    7,49115,    7,49080,49001,49119,    0,49080,
-49083,49123,    7,49125,49001,49127,    0,49081,49116,49131,49001,49133,
-    7,49131,49115,49136,49001,49139,49001,49137,49115,49143,49115,49131,
-    7,49146,49001,49149,49001,49081,    3,48885,37357,49155,  165,49155,
-10257,49155,  483,49155,35187,48885,  375,49165,    9,48885,    1,49168,
-    3,49171,46863,49172,46863,49171,    3,49176,    3,49177,37845,49169,
-37845,49168,37844,49168,49183,49187,37844,49169,49185,49191,    2,49168,
-49175,49195,49179,49195,    2,49169,49181,49201,    3,46863,49171,49204,
-49195,49207,    6,49205,   11,49211,    0,49205,    0,49204,40704,49217,
-38305,49217,    9,49220,    9,49217,38305,49224,    6,49204,40705,49229,
-49217,49231,49219,49229,18967,49229,    4,49236,    5,49236,    5,49237,
-    4,49237,46863,49244,49241,49247,46863,49237,    4,49250,49241,49253,
-    4,49251,49243,49257,49227,49229,   17,49229,49223,49229,37325,49205,
-  903,49267,10107,49204,48875,49271,10219,49205,  903,49275,17049,49204,
- 1369,49279,   11,49205,   25,49283,    9,49283,   17,49205,  903,49289,
-21315,49289,37409,49205,    9,49295, 1011,49205,  375,49299,    9,49204,
-   11,49303,37409,49303,   11,49204,   33,49309,35187,49205, 1505,49313,
-    4,49204,49289,49317,    5,49204,13118,49320, 4862,49320,13118,49321,
-13119,49320,49327,49329, 4863,49320, 4862,49321,49333,49335,15193,49321,
-15475,49321,15579,49321,13507,49321,20501,49321,  253,49321,15437,49321,
- 8997,49351,37019,49321,20219,49321,35843,49321,19513,49321,37377,49321,
-20697,49321,13119,49321,49323,49367, 4863,49321,49325,49371,  241,49321,
- 9875,49321, 1471,49321,   53,49321, 8401,49321,10273,49321, 9955,49321,
- 4137,49321, 4063,49321, 3863,49321, 1369,49321,18967,49321,  483,49397,
-    4,49205,    1,49401,    7,49402,49320,49404,49321,49405,49407,49409,
-49320,49405,49321,49404,49413,49415,    7,49401,    1,49418,49320,49420,
-49321,49421,49423,49425,49320,49421,49321,49420,49429,49431,    1,49400,
-    7,49435,    7,49400,49321,49439,    0,49400,49403,49443,    7,49445,
-49321,49447,    0,49401,49436,49451,49321,49453,    7,49451,49435,49456,
-49321,49459,49321,49457,49435,49463,49435,49451,    7,49466,49321,49469,
-49321,49401,    5,49205,20645,49475, 1505,49475, 9935,49475,18967,49205,
-    7,49483,    4,49484,    4,49485,   16,49483,   17,49483,    4,49482,
-49493,49495,    5,49482,49487,49499,49491,49499,    4,49483,    7,49504,
-49499,49507,    5,49483,49489,49511,    2,46863,    6,49515,   17,49517,
-35187,49519,    0,49515,38305,49523,   15,49525,    0,49514,36545,49529,
-49521,49529,   15,49529,    6,49514,49531,49537,36544,49537,49529,49541,
-49527,49537,   11,49537,35187,49546,49529,49549,35187,49537,   11,49552,
-49529,49555,45639,49514,46599,49559,45639,49515,46275,49563,17125,49515,
-   16,49567,   16,49566,   17,49567,49571,49573,   17,49566,49569,49577,
-17049,49514,    4,49514,    7,49583,    1,49585,  265,49583,    1,49588,
-    0,49588,49587,49589,49586,49588,49595,49597,49587,49588,49586,49589,
-49601,49603,    0,49589,49591,49607,    1,49589,49593,49611,    4,49515,
- 1011,49615,    1,49617,    0,49617,    1,49616,49621,49623,    0,49616,
-49619,49627,    4,46863,27857,49630,27895,49633,19815,49630,19857,49637,
-49237,49631,49239,49641,49237,49630,49241,49645,32805,49630,34447,49649,
-32805,49631,34003,49653,27857,49631,27879,49657,19815,49631,19849,49661,
-    2,49630,    7,49665,    1,49667,  265,49665,    1,49670,    0,49670,
-49669,49671,49668,49670,49677,49679,49669,49670,49668,49671,49683,49685,
-    0,49671,49673,49689,    1,49671,49675,49693,    2,49631,  903,49697,
-    1,49699,    0,49699,    1,49698,49703,49705,    0,49698,49701,49709,
-    1,    7,  377,49713,48110,49712,48111,49712,49152,49712,49472,49712,
-49153,49712,49473,49712,49374,49712,49054,49712,49375,49712,49055,49712,
-  704,49712,  100,49712,26502,49712,41376,49712, 8808,49712,47622,49713,
-47660,49713,47146,49713,47148,49713,49059,49713,49379,49713,49158,49713,
-49478,49713,49061,49713,49381,49713,48998,49713,49318,49713,47224,49713,
-47226,49713,48041,49713,48039,49713,47058,49713,47060,49713,47220,49713,
-47222,49713,48047,49713,47056,49713,47442,49713,49349,49713,49029,49713,
-49121,49713,49441,49713,47628,49713,47668,49713,48962,49713,49290,49713,
-22798,49713,39074,49713,31498,49713,44616,49713,31392,49713,44494,49713,
-47540,49713,47532,49713,31794,49713,44858,49713,48298,49713,48288,49713,
-31924,49713,44994,49713, 8652,49713, 8535,49713,13252,49713,43989,49712,
-41417,49843,30655,49712,26219,49847,26503,49712,41377,49712, 8809,49712,
-26547,49712,26219,49857,41835,49712,41417,49861,  273,49712,12897,49865,
- 8813,49712, 8647,49869,  376,49713,  705,49712,  101,49712,  803,49712,
-  483,49879,30091,49712,26219,49883,  113,49712,    9,49887,43503,49712,
-41417,49891,43215,49712,  483,49895,43214,49712,  112,49712,  802,49712,
-49320,49712,49401,49905,  241,49905,49000,49712,49081,49911,  241,49911,
-49081,49712,49001,49916,49001,49917,49911,49921,49401,49712,49321,49924,
-49321,49925,49905,49929,49001,49712,49081,49932,  241,49932,49321,49712,
-49401,49938,  241,49938,  414,49713,18391,49945,  420,49713,18391,49949,
-  449,49713,18391,49953, 8808,49713,49855,49957, 8453,49713,46863,49960,
-20239,49713,46863,49964,37095,49713,46863,49968,47976,49713,47593,49713,
-26502,49713,49851,49977,31921,49713,47592,49713, 8495,49983,  828,49713,
-49903,49987,  128,49713,49901,49991,  705,49713,49737,49995,  101,49713,
-49739,49999,47977,49713, 8495,50003,47488,49713,48122,49713,48480,49713,
-48440,49713,47568,49713, 1344,49713, 1482,49713,   64,49713, 1484,49713,
-  336,49713, 1480,49713,  254,49713, 1342,49713,  338,49713, 1123,49713,
-  931,49713,  665,49713, 1417,49713, 1429,49713, 1301,49713, 1127,49713,
-  941,49713,  523,49713, 1283,49713,  939,49713, 1103,49713,  171,49713,
- 1525,49713,  407,49713, 1517,49713,  949,49713,  280,49713, 1476,49713,
-  272,49713, 1017,49713, 1077,49713, 1047,49713, 1113,49713, 1245,49713,
- 1237,49713,  501,49713,  433,49713,  929,49713,  591,49713,  915,49713,
-  681,49713, 1555,49713,  911,49713, 1545,49713,  855,49713,41376,49713,
-49853,50107, 4900,49713,14622,49713,48113,49713, 8997,50115, 1382,49713,
-  695,49713,48286,49713,  903,50122,48294,49713, 1011,50126,26503,49713,
-49741,50131,47530,49713,  903,50134,47538,49713, 1011,50138,49289,49713,
-49317,50142,  903,50142,48961,49713,48997,50148, 1011,50148,21522,49713,
-46863,50154,38266,49713,46863,50158,  394,49713,  299,49713,31792,49713,
-  903,50166,44856,49713, 1011,50170,22789,49713,  903,50174,39065,49713,
- 1011,50178, 1386,49713,  545,49713,41377,49713,49743,50187,  413,49712,
- 8647,50191,18062,50191,17993,50191,  251,50196,  251,50191,17993,50200,
-46863,50191,  412,49712,48008,49713,50207,50209,49717,50209,  341,50209,
-40381,49713,   17,50217,  913,49713,  483,50221,  289,49713, 8809,49713,
-49745,50227,49000,49713,49935,50231,49919,50231,49721,50231,49731,50231,
-49937,50231,49933,50231,49081,50243,  241,50243,49320,49713,49941,50249,
-49927,50249,49723,50249,49729,50249,49943,50249,49939,50249,49401,50261,
-  241,50261, 1374,49713, 8672,49713,12534,49713,12921,49713,  264,50273,
-  265,50272,50275,50277,  264,50272,  265,50273,50281,50283, 8605,49713,
-26097,49713,41299,49713,26277,49713,41479,49713,26104,49713,41314,49713,
- 1477,49713,46863,50300,  281,49713,46863,50304, 1516,49713,46863,50308,
-  948,49713,46863,50312,44988,49713,  903,50316,31920,49713, 1011,50320,
-43293,49713,49895,50325,15156,49713,  264,50329,  265,50328,50331,50333,
-  264,50328,  265,50329,50337,50339, 8916,49713,14623,49713, 8495,50345,
- 4901,49713, 8495,50349,14611,49713,  241,50352, 4899,49713,  241,50356,
-15219,49713,  412,50360,  413,50361,50363,50365,  412,50361,  413,50360,
-50369,50371, 5119,49713,  412,50374,  413,50375,50377,50379,  412,50375,
-  413,50374,50383,50385,13177,49713,  413,50388,  264,50388,  264,50389,
-  265,50388,50395,50397,  265,50389,50393,50401, 5313,49713,12377,50404,
-47591,49713,  265,50409, 8861,50411,  265,50408, 8495,50415,47641,49713,
-43292,49713,49899,50421,15158,49713,39228,49713,23012,49713,40676,49713,
-25546,49713,  500,49713,18391,50435,  432,49713,18391,50439, 1244,49713,
-18617,50443, 1236,49713,18617,50447, 1109,49713,  903,50451, 1412,49713,
-  305,50455,44832,49713,31770,49713,25545,49713,    9,50462,40675,49713,
-  483,50466,  935,49713,  483,50471, 1087,49713,    9,50475, 1413,49713,
-  295,49713, 1290,49713,  903,50483, 1304,49713,    9,50487,48009,49713,
-50191,50491,49719,50491,  241,50491,22957,49713,  903,50498,39205,49713,
- 1011,50502,47608,49713, 1505,50506,21315,50506,47640,49713,  165,50512,
-38057,50512,  510,49713,46863,50518,  922,49713, 1108,49713, 1280,49713,
-    9,50527,  246,49713,  483,50531,  412,49713,47460,50535,  483,50535,
-    9,50535, 8997,50535,46863,50542,46863,50535, 8997,50546, 1216,49713,
-44243,50550,31103,50550,  483,50550,18617,50557,    9,50550,18617,50561,
- 8677,49713,  305,49713,  241,50567,16163,50567, 8647,50566, 8495,49713,
-  257,50574, 1141,49713,16531,50579,  253,49713,   59,50582, 1325,50582,
-  331,50582,  265,50582, 8634,49713, 8611,49713,41349,49713,26127,49713,
-  273,49713,12705,50601,13673,50601,18391,50601, 2923,50601,46863,50600,
-  331,49713,   53,50612, 1471,50612,  253,50612, 1369,50612, 8861,49713,
-  241,50623,  375,50625,  375,50622,  251,49713,  413,50631,17993,50633,
-  413,50630,18391,50637,15029,50630,  264,50641,  265,50640,50643,50645,
-  264,50640,  265,50641,50649,50651,39204,49713,  257,49713,  265,50657,
-26625,50657,25793,50657,41019,50657, 8495,50657, 9731,50657,25793,50656,
-41019,50656, 8495,50656,  265,50656, 4863,50677,12377,49713,46863,50680,
- 5313,50680,  341,49713,  241,50687,  298,49713, 4863,50691,  704,49713,
-49875,50695, 9195,50695,  100,49713,49877,50701,  395,49713,  829,49713,
-49879,50707, 9195,50707,  129,49713,49887,50713,   89,49713,48884,50716,
-48884,50717,48885,50717,50719,50723,48885,50716,50721,50727,   11,50716,
-  567,49713,42155,50733,41941,50733, 7971,50733, 9565,50733,  587,50733,
- 9377,50743,  587,50732, 9195,50747,38057,49713,47640,50750,46863,50750,
-  903,50754,  903,50750,46863,50758,21315,49713,47608,50762,46863,50762,
- 1011,50766, 1011,50762,46863,50770,  628,49713, 1396,49713,  241,50777,
-  288,49713, 7971,50781,  265,49713,23584,50785,39564,50785,24355,50785,
-39905,50785, 5520,50785,  256,50784,50795,50797, 5521,50785,  256,50785,
-50204,50785,   10,50784,    1,50785,  257,50808,50797,50811,  257,50809,
-50803,50815,   10,50785,50191,50785,46863,50820,47590,50784,23493,50785,
-22807,50826,39489,50785,39085,50830,22807,50785,23493,50834,39085,50785,
-39489,50838, 1087,50785,  935,50785,47591,50784, 8495,50847,47590,50785,
-50847,50851, 4213,50785, 8757,50785,26415,50785,41653,50785,27377,50785,
- 9335,50785,42471,50785, 8109,50785, 4147,50785, 3933,50785,   53,50784,
- 1471,50784,  253,50784,47591,50785,50825,50881,  257,50785,    1,50884,
-50797,50887,50797,50885, 4827,50885,  305,50785, 8861,50895, 8495,50785,
-  331,50899,46863,50785,50191,50902,  241,50902,  241,50785,46863,50908,
- 8337,50909,46863,50913, 1369,50784,  305,50917,   11,50785,50807,50921,
- 8165,50921, 1369,50921,  241,50784,47460,50929,  483,50929,    9,50929,
- 8997,50929,46863,50936,46863,50929, 8997,50940,  257,50784,50801,50945,
-50803,50945, 4863,50945,   11,50784,50819,50953, 7971,50953, 1011,49713,
-31920,50958,48294,50958,44856,50958,47538,50958,48961,50958,39065,50958,
-21315,50958,46863,50972,31103,50958,  903,50976, 1505,50958,46863,50980,
-44243,50958,  903,50984,39205,50958,    9,50958,  903,50958,31103,50992,
-44243,50992,46863,50958,21315,50998, 1505,50998,  903,49713,44988,51004,
-48286,51004,31792,51004,47530,51004,49289,51004,22789,51004,38057,51004,
-46863,51018,44243,51004, 1011,51022,  165,51004,46863,51026,31103,51004,
- 1011,51030,22957,51004,  483,51004, 1011,51004,44243,51038,31103,51038,
-46863,51004,38057,51044,  165,51044,  241,49713,47961,51050, 4899,51050,
-14611,51050,  375,51050,12377,51051,  375,51061, 8997,51051,  375,51065,
-  265,51065,46863,51069, 1275,51050,    9,51073,   15,51050,  483,51077,
-  265,51050,47460,51081,  483,51081,    9,51081, 8997,51081,46863,51088,
-46863,51081, 8997,51092, 8647,49713,  413,51096,  305,51097,   11,51097,
- 1369,51097,  341,51097,  305,51096,41417,49713,   11,51111, 1369,51111,
-26219,49713,   11,51117, 1369,51117,32102,49713,27021,51123,45148,49713,
-   11,51127, 1369,51127,31857,49713,44925,49713,32294,49713,45314,49713,
-17565,49713,32103,49713,  241,51143,  587,51142,45149,49713,   11,51148,
-49317,49713,49289,51152,48997,49713,48961,51156,49001,49713,49912,51161,
-49725,51161,49914,51161,49735,51161,49081,51161,49911,51170,49911,51161,
-49081,51174,  241,51174,  241,51161,49911,51180,49321,49713,49906,51185,
-49727,51185,49908,51185,49733,51185,49401,51185,49905,51194,49905,51185,
-49401,51198,  241,51198,  241,51185,49905,51204,49475,49713, 1505,51208,
-49155,49713,  165,51212,  240,49712,51059,51217,50163,51217,50165,51217,
-51051,51217,  375,51225,  264,49712,49715,51229,50838,51229,50834,51229,
-50850,51229,50847,51229,50945,51229,49983,51229,50415,51229,50677,51229,
-50691,51229,50496,51229,50003,51229,50906,51229,50910,51229,50345,51229,
-50349,51229, 8374,51229, 8389,51229,50705,51229,20152,51229,36898,51229,
-20201,51229,36979,51229,50902,51229,  241,51276,50908,51229,46863,51280,
-50491,51229,  241,51284,47590,51229,50785,51288,22807,51229,50785,51292,
-39085,51229,50785,51296,26219,51229,41417,51229,14524,51229,35690,51229,
-50733,51229,37519,51229,50781,51229,50953,51229,50455,51229,50917,51229,
-19396,51229, 8647,51229,20103,51229,  375,51324,36773,51229,  375,51328,
- 8337,51229,  375,51332,50785,51229,39085,51336,22807,51336,47590,51336,
-46863,51336,  241,51344,  241,51336,46863,51348,47488,51229,47961,51229,
-    9,51229,18967,51356,  483,51229,35187,51229,  375,51362,18967,51229,
-    9,51366,46863,51229,50908,51370,50785,51370,  241,51374,  241,51370,
-50785,51378,  375,51370,  241,51229,50491,51384,50902,51384,50785,51384,
-46863,51390,46863,51384,50785,51394,  375,51229, 8337,51398,20103,51398,
-36773,51398,14315,51398,35187,51398,46863,51398,14315,51229,  375,51412,
- 4899,51229,14611,51229, 1010,49712, 3867,51421, 8277,51421, 4067,51421,
- 3997,51421, 8953,51421, 9459,51421,  902,49712,50321,51435,51031,51435,
-24265,51435,28233,51435,29077,51435,51005,51435,31103,51447,19559,51435,
- 4283,51435, 9673,51435, 4279,51435, 3807,51435,20361,51435,20713,51435,
- 9967,51435, 8251,51435,47961,49713,  241,51468,47979,49713,  412,51472,
-  413,51473,51475,51477,  412,51473,  413,51472,51481,51483,  240,49713,
-  340,51487,51398,51487,51418,51487,51416,51487,51354,51487,47974,51487,
-47589,51487, 8590,51487,12537,51487,14620,51487,  375,51487,51229,51508,
-    7,51487,  265,51512,  265,51513,51229,51517,47580,51487, 8861,51521,
-47961,51487,51229,51524, 8495,51524,51229,51487,  375,51530,14611,51530,
- 4899,51530,47961,51530, 8495,51487, 4899,51540,47961,51540,14611,51540,
-14611,51487,51229,51548, 8495,51548, 4899,51487,51229,51554, 8495,51554,
-46863,51487,  265,51560, 8861,51563,  265,51561, 8495,51567,51229,51567,
-  265,51487,    7,51572,15309,51573,15308,51572,51577,51579,15308,51573,
-15309,51572,51583,51585,46863,51572, 8861,51589,  902,49713,31103,51593,
-43053,51593,46863,51593, 1010,49713, 1505,51601,  918,51601,    9,51601,
-  903,51606,  903,51601,    9,51610,  265,49712,49873,51615,50165,51615,
-51059,51615,51057,51615,51055,51615,51053,51615,49975,51615,49973,51615,
-50113,51615,50111,51615,50163,51615,51471,51615,50355,51615,50359,51615,
-50209,51615,  241,51645, 8948,51615,50225,51615,50479,51615,  331,51615,
- 8861,51654, 8861,51615,  331,51658, 4827,51615,15269,51615,51051,51615,
-  375,51667,14611,51667, 4899,51667,47961,51667,  241,51614,50209,51677,
-  241,49712,18300,51681, 8605,51681, 8916,51681,50945,51681,49321,51680,
-50249,51691,49001,51680,50231,51695,50705,51681, 8374,51681,51508,51681,
-50691,51681,47443,51681, 8389,51681,50677,51681,51517,51681, 8861,51681,
-  375,51714,26219,51681,41417,51681,  305,51681,48009,51681,51229,51725,
- 8647,51681, 8452,51681,46863,51731,  713,51681,   25,51681,18257,51681,
-  375,51738, 8337,51681,  375,51742,  265,51742,46863,51747,  375,51681,
-18257,51750, 8861,51750, 8337,51750,51487,51750,51487,51681,  375,51760,
-  265,51680,50209,51765,49321,51681,49905,51769,49001,51681,49911,51773,
-  265,51681,51370,51777,51229,51777,46863,51780,46863,51777,51229,51784,
- 8337,51776,46863,51789,46863,51681,  264,51792,51765,51795,  264,51793,
-51777,51799,  264,49713,51489,51803,51515,51803,51575,51803,51521,51803,
-50411,51803,50659,51803,51563,51803, 8471,51803, 8397,51803, 8371,51803,
-20149,51803,36887,51803,20211,51803,37009,51803,20247,51803,37103,51803,
-51589,51803,50207,51803,46863,51839,51765,51803,46863,51843,51677,51803,
-46863,51847,36773,51803,46863,51851,20103,51803,46863,51855, 8337,51803,
-46863,51859, 4613,51803,12571,51803,36539,51803,37595,51803,36049,51803,
-47581,51803,51487,51873,51615,51803,39085,51877,22807,51877,47590,51877,
-46863,51877,  241,51884,  241,51877,46863,51888,46863,51802,51765,51893,
-51677,51893,50207,51893,51615,51893,  241,51901,  341,51893, 1369,51803,
-  341,51803,51487,51909, 8337,51909,20103,51909,36773,51909,35187,51909,
-14315,51909,46863,51909,12377,51803,  375,51925, 1011,49712,26219,51929,
-41417,51929, 8647,51929,  903,49712,49981,51937,51594,51937,  375,51937,
-31103,51937,51593,51944,51593,51937,31103,51948,15269,51937, 4827,51937,
- 1217,49713,  483,51957,    9,51957,  413,49713, 8647,51962,13177,51962,
-  251,51962,18391,51969,  375,51962,18391,51973,44243,51962,31103,51962,
-18391,51963,  251,51981,  483,51962,18391,51985,    9,51962,18391,51989,
-  375,49713,    5,51992,51615,51995,  413,51993,17993,51999,  413,51992,
-18391,52003,  241,51993,51487,52007,46863,51992,  241,51992,51217,52013,
-51615,52013, 8861,51992,12377,51993,51487,52021,15029,51992,14315,49713,
-  341,52027,51487,52029,15029,49713,  266,52032,  267,52032,  264,52033,
-52035,52039,  465,52032,52039,52043,  413,52032,    6,52046,  264,52032,
-  251,52051,  241,52051,    6,52055,  265,52033,  251,52059,52051,52060,
- 8841,52059,52037,52059,52052,52059,52051,52059,  251,52070,15363,52059,
-15055,52059,15061,52059,52049,52059,52057,52059,  265,52032,  251,52084,
-52039,52087,52039,52085,  251,52091,  251,52032,  265,52094,52039,52097,
-  265,52095,52051,52101,  375,52032, 8639,49713, 8643,49713,26217,49713,
-41415,49713,  164,49713,51593,52115,  903,52115, 1504,49713,51601,52121,
-  144,49713,  113,52125,  802,49713,49880,52129,49879,52129,  483,52132,
- 9366,52129, 9195,52129,  483,52138,  483,52129,49879,52142, 9195,52142,
-31103,52129,  112,49713,49888,52151,49887,52151,    9,52154,    9,52151,
-49887,52158,44243,52151, 1486,49713,  803,52165,43214,49713,49896,52169,
-49895,52169,  483,52172,  483,52169,49895,52176, 1073,49713,  903,52181,
-  525,49713,  903,52185,  669,49713,  483,52189,  566,49713,51929,52193,
-51615,52193,10107,52193,21036,49713,   17,52201,   88,49713,37611,52205,
-36083,52205,38155,52205,35927,52205, 1346,49713, 1505,52215,  154,49713,
-  483,52219,26329,49713,41557,49713,  165,49713,49155,52226,47640,52226,
-46863,52226,  903,52232,  903,52226,46863,52236,43215,52226, 1505,49713,
-49475,52242,47608,52242,46863,52242, 1011,52248, 1011,52242,46863,52252,
-28715,52242,  803,49713,49903,52259,  483,52261,  483,52258,49903,52265,
-  113,49713,49901,52269,    9,52271,    9,52268,49901,52275,28715,49713,
- 1505,52278,43215,49713,49899,52283,  483,52285,  483,52282,49899,52289,
-  165,52282,29028,49713,43318,49713,25793,49713,  257,52298,  713,49713,
-  241,52303,16163,52303,41019,49713,  257,52308,   25,49713,  241,52313,
-16163,52313, 1447,49713,16531,52319,   33,49713,16531,52323, 1471,49713,
-   59,52326, 1325,52326,  331,52326,  265,52326,   53,49713, 1325,52336,
-   59,52336,  331,52336,  265,52336, 1325,49713,   53,52346, 1471,52346,
-  253,52346, 1369,52346,   59,49713, 1471,52356,   53,52356,  253,52356,
- 1369,52356,48466,49713,  483,52366,48408,49713,    9,52370,  843,49713,
-    9,52375, 1530,49713,    9,52379,40436,49713,  113,52383,  587,49713,
-28714,52387,36212,52387,30091,52387,  567,52386, 9195,52395,   11,52386,
-32103,52386,35187,52387,  241,52402,  241,52387,35187,52406,    4,52386,
- 9366,52411, 9195,52411,  483,52414,  483,52411, 9195,52418,31103,52411,
-    5,52387,21605,52424, 9195,52425,27021,52425,21605,52387,   11,52433,
-    5,52432,   11,49713,32805,52439,19888,52439,19913,52439,  265,52439,
-51803,52447,43503,52439, 1275,52438,    9,52453,   89,52438,  587,52438,
-  265,52438,51229,52461, 7971,52461,45149,52438,18967,52439,  241,52468,
-  241,52439,18967,52472,    2,52438,    9,52477,44243,52477,    3,52439,
- 7971,52483,42155,52483,    2,52439,52205,52489,38305,52439,  265,52493,
-38305,52438,  113,52497, 1369,49713,  331,52500,   59,52500,40674,52501,
-38305,52501,  265,52509,  241,52508,  241,52501,38305,52514, 1325,52500,
-  265,52500,51229,52521,  305,52521,   17,52500,  241,52527,38305,52500,
-35187,52501,  265,52501,  331,52535,51803,52535,    4,52500,51601,52541,
-    5,52500,  803,52545,    5,52501,  959,52549,   47,52549,  759,52549,
-    4,52501, 1275,52500,    9,52559,   17,49713, 1275,52562,  903,52565,
- 1369,52562,  241,52569,    2,52562,  903,52573,51593,52573,    3,52562,
-  113,52579,    3,52563, 1141,52583, 1447,52583,   33,52583,    2,52563,
-  265,52591,51803,52591,38305,49713, 1369,52596,    3,52596,    3,52597,
- 8165,52603,20501,52603, 9875,52603,   11,52603,   11,52596,  113,52613,
-   15,49713, 1010,52617, 1010,52616, 1011,52616,52619,52623, 1011,52617,
-52621,52627,  241,52616,  483,52631,    3,52616,  483,52635,    3,52617,
- 1369,52639, 1275,49713,   17,52642,  903,52645,   11,52642,    9,52649,
-  241,52642,    9,52653,    9,52643, 1369,52657,   11,52657,    5,52642,
- 1505,52663,    5,52643,   53,52667, 1471,52667,  253,52667, 1369,52642,
-    9,52675,18967,49713,  241,52679,    9,52681,    5,52678,   17,52685,
-    5,52679,    9,52689,  483,49713,  803,52693,52129,52695,43215,52693,
-52169,52699, 1216,52693,18759,52703,  413,52693,17993,52707,  803,52692,
-49903,52711,48466,52692,43215,52692,49899,52717,40675,52692, 1216,52692,
-18617,52723,  413,52692,18391,52727,44243,52692,38305,52693,46169,52733,
-    9,52692,46863,52736,  903,52692,    5,52692,10107,52743,51929,52743,
-51615,52743,    5,52693,46863,52692,    9,52752,    9,49713,  113,52757,
-52151,52759,    4,52756,    7,52763,    2,52765,    2,52764,    2,52763,
-    7,52770, 1368,52763, 1216,52757,18759,52777,  413,52757,17993,52781,
-  113,52756,49901,52785,48408,52756,25545,52756, 1216,52756,18617,52793,
-  413,52756,18391,52797,31103,52756,  483,52756,46863,52802, 1011,52756,
-    3,52756,52769,52809,52773,52809,37611,52809,38155,52809,35927,52809,
-52489,52809,52775,52809,    3,52757,52767,52825,52151,52825,37663,52825,
-52477,52825,31103,52825,46863,52756,  483,52836,31103,49713, 1216,52840,
-  413,52840,21036,52840,21037,52840,21037,52841,52847,52851,  903,52841,
-51593,52855, 1011,52840,  903,52858,21036,52841,52849,52863,  903,52840,
-51435,52867, 1011,52866,    9,52840,    5,52840,27021,52875,44243,49713,
- 1216,52878,  413,52878,  903,52878, 1011,52884, 1011,52878,  903,52888,
-  483,52878,    3,52878,   11,52895, 1369,52895,    3,52879,  483,52901,
-49205,49713,    5,52905,48885,49713,  113,52909,    3,52909,    3,49712,
-20819,52915,50945,52915,51508,52915,37537,52915,36898,52915,20152,52915,
- 8374,52915,50695,52915,50701,52915,50707,52915,50713,52915,50691,52915,
-50705,52915,37748,52915,20952,52915,52395,52915,52457,52915,52142,52915,
-52158,52915, 8389,52915,50677,52915,51517,52915,50747,52915,50731,52915,
-52418,52915,52478,52915,36979,52915,20201,52915,26219,52915,26106,52915,
-52129,52915,  483,52976,52411,52915,  483,52980,51123,52915,32103,52915,
-52875,52915,31770,52915,42885,52915,20885,52915,  483,52994,40399,52915,
-44714,52915,  357,52915,  367,52915,  471,52915, 1249,52915, 8800,52915,
- 8647,52915,47488,52915, 8086,52915,19687,52915,19559,52915,20361,52915,
- 9673,52915,20713,52915, 9967,52915, 4283,52915, 4279,52915, 3807,52915,
- 8251,52915,41746,52915,41417,52915,44832,52915, 9704,52915,20326,52915,
-21087,52915,52906,52915,48245,52915,48975,52915,48451,52915,52151,52915,
-    9,53058,52477,52915,    9,53062,51487,52915,  375,53066,50785,52915,
- 8165,52915,  265,53073, 1447,52915,38305,53077,21127,52915,20843,52915,
-52425,52915,37663,52915,    9,53086, 1141,52915,38305,53091,  566,52915,
-  567,52915,46863,53097,44243,52915,41941,53100,  483,53100,  375,52915,
-51487,53106,20103,53106, 8337,53106,36773,53106,46863,53106,41941,52915,
-44243,53118,   33,52915,38305,53123, 9617,52915,    9,53126, 8337,52915,
-  375,53130,48884,52915, 1011,52915,48885,52915,  483,53139,52907,52915,
-   25,52915, 7971,53144,41019,52915,   11,53148,  305,52915, 8495,52915,
-   11,53154,20103,52915,  375,53158,20273,52915,    9,53162,    4,52915,
-28411,53167,31103,53167,48408,53167,52905,53167,  483,53167,46863,53176,
-20691,53167, 9923,53167,46863,53167,  483,53184,    5,52915,52905,53188,
-   17,53189,18967,53193,46863,53188,  483,53188,25793,52915,   11,53200,
-  713,52915, 7971,52915,   25,53206,36773,52915,  375,53210,    4,52914,
-53191,53215,53051,53215,24265,53215,28233,53215,29077,53215,53135,53215,
-53197,53215,53189,53215,52905,53231,46863,53231,19559,53215, 9673,53215,
- 4283,53215,20361,53215, 9967,53215,20713,53215, 8251,53215, 4279,53215,
- 3807,53215,    5,52914,53143,53255,53174,53255,50785,53255,53139,53255,
-53184,53255,50733,53255,19396,53255,53167,53255,52905,53270,46863,53270,
- 8647,53255,41417,53255,26219,53255,    9,53255,18967,53282,  483,53255,
-18967,53255,    9,53288,52905,53255,53167,53292,46863,53255,53167,53296,
-   11,52915,25793,53301,25793,53300, 8495,53301, 8495,53300,18967,53301,
-41019,53301,41019,53300,21037,53301,    9,52915,52151,53318,37663,53318,
-52477,53318,31103,53318,20273,53318, 9617,53318,52905,52915,    5,53332,
-53215,53335,    5,53333,53167,53339, 9875,52915,35187,53343,  241,53343,
-46863,52915,  375,53348,    5,53348,53215,53353,    5,53349,53167,53357,
-  483,52915,52129,53360,20885,53360,52411,53360,44243,53360,    5,53361,
-    5,53360,18967,52915,11731,53375,  113,53375,31103,52915,    9,53380,
-20501,52915,35187,53385,  241,53385,    2,49712,52711,53391,52785,53391,
-51059,53391,50165,53391,49995,53391,49999,53391,49987,53391,49991,53391,
-50163,53391,52013,53391,52265,53391,52275,53391,17609,53391, 4904,53391,
-17586,53391,52259,53391,  483,53423,  272,53391, 1476,53391,  280,53391,
-  949,53391, 1517,53391,52269,53391,    9,53437, 9484,53391,51803,53391,
-51051,53391,  375,53445, 4903,53391,    9,53448,17579,53391,    9,53452,
-42991,53391,40039,53391,40685,53391, 1197,53391,  265,53391,  253,53464,
- 1471,53464,   53,53464,   53,53391,  265,53472,  253,53391,  265,53476,
-    5,53391, 1471,53391,  265,53482,    5,53390, 8953,53487, 9459,53487,
- 4067,53487, 3997,53487, 8277,53487, 3867,53487,   11,53391, 9377,53500,
-    9,53391, 4903,53504,17579,53504, 9377,53391,   11,53510,    5,53511,
-    5,49712,48765,53517,48835,53517,48843,53517,25445,53517,22779,53517,
-22243,53517,    7,53517,    2,53531,28063,53517,25299,53517,31598,53517,
-53152,53517,50733,53517,35690,53517,37519,53517,50781,53517,52461,53517,
-50953,53517,  272,53517, 1476,53517,  280,53517,  949,53517, 1517,53517,
-  357,53517,  367,53517,  471,53517, 1249,53517, 9304,53517,53204,53517,
-53144,53517,35931,53517,52912,53517,20326,53517,21087,53517,20273,53517,
-    9,53586,50785,53517, 1369,53591,53391,53591,25381,53517,48753,53597,
-10081,53597, 9704,53517,   53,53517,  265,53604,37899,53517,37617,53517,
-52483,53517, 9617,53517,    9,53614,  253,53517,  265,53618,31103,53517,
-26625,53622,  375,53517,35187,53626,26625,53517,31103,53630, 1471,53517,
-  265,53634,  265,53517,  253,53638, 1471,53638,   53,53638,49204,53517,
-49205,53517,52913,53517,  713,53517, 9195,53652,52915,53652,21605,53653,
-  305,53517,52915,53660,21605,53661,    2,53517, 8229,53667,52909,53667,
-46863,53667,    3,53517,52909,53674,53391,53675, 1369,53675,46863,53674,
-52915,53517,  305,53684,  713,53684,   25,53684,   25,53517,52915,53692,
-21605,53693, 9195,53517,  713,53698,    2,53516,53677,53703,53581,53703,
-53647,53703,53683,53703,53675,53703,52909,53713,46863,53713, 4067,53703,
- 3997,53703, 8953,53703, 9459,53703, 8277,53703, 3867,53703,    3,53516,
-53651,53731,53670,53731,50785,53731,50733,53731,53649,53731,53672,53731,
-19396,53731,53667,53731,52909,53746,46863,53746, 8647,53731,26219,53731,
-41417,53731,  483,53731,18967,53731,    9,53760,    9,53731,18967,53764,
-52909,53731,53667,53768,46863,53731,53667,53772,  587,53517,35187,53777,
-  483,53517,52909,53517,    3,53782,53703,53785,    3,53783,53667,53789,
-46863,53517,    3,53792,53703,53795,    3,53793,53667,53799,    9,53517,
-20273,53802, 9617,53802,35187,53517,  375,53808,    4,49712,48747,53813,
-37279,53813,19981,53813,24601,53813,    7,53813,21605,53823,53071,53813,
-52743,53813,52193,53813,50225,53813, 8306,53813,  545,53813,  695,53813,
- 1382,53813, 1374,53813, 1386,53813,51906,53813,53442,53813,53199,53813,
-53373,53813,53095,53813,51803,53813, 1369,53856,53391,53856, 9992,53813,
-20734,53813,19916,53813,48739,53867,37241,53867, 7947,53867,28205,53813,
-24613,53813,25551,53813,53189,53813,  483,53881,   33,53813, 9875,53813,
-  265,53886,  241,53887,20501,53813,  265,53892,  241,53893, 1141,53813,
-  154,53813,  483,53901, 1447,53813,  331,53813, 1369,53906,  265,53813,
- 8165,53910, 9875,53910,20501,53910, 1011,53813,   59,53813, 1369,53920,
-    3,53813, 8241,53925,   15,53924,  483,53929,53391,53813,51803,53932,
- 1325,53813, 1369,53936,    3,53812,24265,53941,28233,53941,29077,53941,
- 9673,53941,19559,53941, 4283,53941,20361,53941, 8251,53941, 3807,53941,
- 9967,53941,20713,53941, 4279,53941, 1369,53813,  331,53966, 1325,53966,
-   59,53966,51803,53966,18967,53813, 1275,53976,48739,53979,37241,53979,
- 7947,53979,  113,53977, 1275,53813,18967,53988,48739,53991, 7947,53991,
-37241,53991, 8165,53813,  265,53998,46863,53813,38056,54002,38056,54003,
-38057,54002,54007,54009,38057,54003,54005,54013,   15,53813,    3,54017,
- 1369,54019,    3,54016,  483,54023,    5,49713,  375,54026,51615,54029,
- 1368,54027,    7,54027,    2,54034,    2,54035,32805,54027,31103,54041,
-20035,54027,  375,54045,  341,54027,18967,54049,12377,54027,  375,54053,
-52915,54027,31103,54057,27021,54027,31103,54061,30091,54027,31103,54065,
-31103,54026,27021,54069,52915,54069,18967,54027,47608,54075,46863,54075,
- 1011,54078, 1011,54075,46863,54082,53924,54027,53825,54087,  483,54087,
-51929,54027,  483,54093,51615,54027,  375,54097,  483,54097, 1369,54026,
-  803,54103,  483,54026,53813,54107,10107,54107,51929,54107,51615,54107,
- 1275,54026, 1505,54117,18967,54026,   17,54121, 1369,54027,51601,54125,
-    2,54026,54078,54129,54075,54129,46863,54132,52541,54129, 1505,54129,
-  918,54129,52121,54129,54125,54129,  903,54129,    9,54146,    9,54129,
-  903,54150,46863,54129,54075,54154,    3,54026,54033,54159,54037,54159,
-53966,54159,12571,54159, 4613,54159,51615,54159, 8337,54159,46863,54173,
-52591,54159,53932,54159,53391,54159,53813,54180,53813,54159, 1369,54184,
-53391,54184,36773,54159,46863,54191,20103,54159,46863,54195, 1369,54159,
-53813,54198,    2,54027,    0,54202,54159,54205,46863,54207,    7,54202,
-54159,54211,  265,54203,    9,54215,54159,54203,    9,54219,46863,54219,
-    3,54027,48286,54225,54039,54225,54150,54225,52573,54225,52115,54225,
-38057,54225,46863,54236,53813,54224,53825,54241,  483,54241,    9,54225,
-54129,54246,  483,54225,53813,54251,54154,54225,46863,54225,38057,54256,
-54129,54256,54129,54225,    9,54262,46863,54262,10107,54027,  483,54269,
-53813,54027,  483,54273,    3,54273, 1369,54277,53391,54277,    3,54272,
-53825,54283,  483,54283,   17,54027,20273,54289, 9617,54289,    3,49713,
-16722,54295,16530,54294,54297,54299,16723,54295,16531,54294,54303,54305,
-16530,54295,    1,54295,35187,54311,   17,54313,    7,54295,16531,54316,
-54299,54319,16531,54317,54309,54323,   15,54317,38305,54327,    1,54294,
-40705,54331,54329,54331,   17,54331,    7,54294,54333,54339,40704,54339,
-54331,54343,49713,54339,    4,54346,    4,54339,49713,54350,54315,54339,
-    9,54339,38305,54356,54331,54359,38305,54339,    9,54362,54331,54365,
-52489,54295,    9,54369,36527,54295,  375,54373,  341,54295,12377,54295,
-    9,54379,16531,54295,    7,54382,54299,54385,37611,54295,    9,54389,
- 8321,54295,35927,54295,    9,54395,38155,54295,    9,54399,43503,54295,
-44243,54403,  113,54295,38305,54406,40086,54295, 8241,54295,44243,54294,
-   11,54415, 1369,54415, 1486,54295,35187,54295,47640,54423,46863,54423,
-  903,54426,  903,54423,46863,54430,53480,54295,11731,54295,51615,54295,
-  241,54295,   17,54294,  113,54443,38305,54294,    9,54294,37611,54449,
-38155,54449,35927,54449,52489,54449,   15,54294,  483,54459,   11,54295,
-44243,54463,38305,54295,  113,54466,38057,54295,    7,54471,  375,54471,
-    4,54294,54426,54477,54423,54477,46863,54480,52573,54477,54377,54477,
-52115,54477,43053,54477,46863,54477,54423,54492,    5,54294,54473,54497,
-    6,54497,54471,54501,53966,54497,12571,54497, 4613,54497,51615,54497,
- 8337,54497,46863,54513,52591,54497,53932,54497,53813,54497, 1369,54520,
-53391,54520,53391,54497,53813,54526,20103,54497,46863,54531,36773,54497,
-46863,54535, 1369,54497,53813,54538,    4,54295,    0,54542,54497,54545,
-46863,54547,    5,54295,48294,54551,21315,54551,46863,54554,53391,54550,
- 1369,54550,46863,54551,21315,54562,53391,54295,    5,54567,53813,54569,
-    5,54566, 1369,54295, 9893,54575,52129,54575,54353,54575,54349,54575,
-20885,54575,52411,54575,44243,54575,    5,54574,    5,54575,53813,54593,
-    2,49713,53227,54597,53262,54597,53355,54597,53358,54597,53298,54597,
-53264,54597,53229,54597,53274,54597,53234,54597,49168,54597,    1,54597,
-    7,54597,  567,54621,52915,54623,    4,54621,54575,54627,53360,54627,
-52915,54627,  483,54632,  483,54627,52915,54636,    9,54621,    1,54596,
-36544,54643,35187,54643,   11,54646,   11,54643,35187,54650,    7,54596,
-36545,54655,54643,54657,54645,54655,21605,54655,54653,54655,54649,54655,
-   15,54655,53270,54597,46863,54670,53231,54597,46863,54674,49169,54597,
-54097,54597,53134,54597,53215,54683,53352,54597,53215,54687,53196,54597,
-53215,54691, 8311,54597,48884,54596,54617,54697,53731,54597,53881,54597,
-54283,54597,54241,54597,54087,54597,36256,54597,53296,54597,53167,54712,
-53184,54597,53255,54716,53167,54597,53357,54720,53296,54720,53255,54720,
-46863,54726,46863,54720,53255,54730,48885,54597,    9,54734,54697,54737,
-54697,54735,    9,54741,35187,54597,    9,54744,    9,54597,48885,54748,
-54697,54751,48885,54749,35187,54748,   11,54749,52915,54759,53188,54597,
-53215,54763,46863,54765,46863,54762,53215,54769,53813,54763,53139,54597,
-53255,54774,44243,54597,   11,54779,54225,54597,53813,54783,51229,54597,
-  265,54597,54027,54789,47961,54791,14611,54791, 4899,54791,  375,54791,
-   17,54596,  903,54801,51593,54801,54477,54801,54225,54801,   11,54596,
-53318,54811,52825,54811,52915,54811,    9,54816,    9,54811,52915,54820,
-44243,54811,53255,54597,53139,54826,53184,54826,53167,54826,46863,54832,
-46863,54826,53167,54836,53357,54597,53167,54840,    4,54596,51418,54845,
-51416,54845,51398,54845,51354,54845,51909,54845,  340,54845,51803,54857,
-51873,54845,47974,54845,47589,54845, 8590,54845,14620,54845,12537,54845,
-52021,54845,52029,54845,53106,54845,  375,54845,51229,54878,52915,54878,
-    0,54845,    6,54885,    7,54845,  265,54888,51803,54891,  265,54889,
-51229,54895,52915,54895,47580,54845,51803,54901, 8861,54901, 8495,54845,
-47961,54906, 4899,54906,14611,54906,52915,54845,  375,54914,14611,54845,
-51229,54918, 8495,54918, 4899,54845,51229,54924, 8495,54924,47961,54845,
-51229,54930, 8495,54930,  265,54845,    7,54936,51803,54939,54887,54937,
-54886,54936,54943,54945,54887,54936,54886,54937,54949,54951,46863,54936,
- 8861,54955,51803,54955,46863,54845,  265,54960,51803,54963, 8861,54963,
-  265,54961,51229,54969, 8495,54969,51229,54845,  375,54974,14611,54974,
- 4899,54974,47961,54974,    5,54596, 1505,54985,  918,54985,52541,54985,
-52121,54985,54125,54985,  903,54985,    9,54996,    9,54985,  903,55000,
-    5,54597,54889,55005,52915,55007,53349,55004,    6,55005,54914,55013,
-52915,55013,54845,55016,54845,55013,52915,55020,   53,55005, 1471,55005,
-  253,55005,52557,55005,53348,55004,53215,55033,  241,55005,    9,55037,
-52915,55004,53215,55041,46863,55043,46863,55040,53215,55047,53813,55041,
-   17,55005,35187,55053,52915,55005,53357,55057,55011,55057,53296,55057,
-53255,55057,46863,55064,46863,55057,53255,55068,46863,55004,52915,55072,
-53215,55075,52915,55073,53255,55079,48885,54596,54679,55083,    9,55083,
-48884,54597,54755,55089,55086,55089,55083,55089,    9,55094,52915,55088,
-53215,55099,52915,55089,53255,55103,    9,55089,55083,55106,53348,54597,
-    5,55110,53215,55113,    5,55111,53167,55117,52915,54597,48884,55120,
-53215,55123,48884,55121,53139,55127,    5,55121,53139,55131,53184,55131,
-53167,55131,46863,55136,46863,55131,53167,55140,    5,55120,53215,55145,
-46863,55147,46863,55144,53215,55151,53813,55145,46863,55120,    5,55156,
-53215,55159,    5,55157,53167,55163,21605,54597,54027,55167,31103,55169,
-46863,54597,53270,55172,53231,55172,53188,55172,53215,55179,53255,55172,
-53167,55182,53167,55172,53255,55186,    5,55172,52915,55190,53215,55193,
-52915,55191,53255,55197,52915,55172,    5,55200,53215,55203,    5,55201,
-53167,55207,    4,49713,51398,55211,  375,55211,51229,55214,53709,55211,
-53740,55211,51909,55211,53797,55211,53800,55211,  340,55211,51803,55229,
-54339,55210,54575,55233,53774,55211,53742,55211,53711,55211,53750,55211,
-53716,55211,54663,55211,53533,55211, 1368,55211,52205,55251,54449,55251,
-52809,55251,54295,55251,    9,55259,    7,55211,  265,55263,51229,55265,
-   89,55263,52915,55269,  265,55262,51803,55273,    2,55262,52205,55277,
-52809,55277,54449,55277,54295,55277,    9,55285,    2,55263,52825,55289,
-53318,55289,    9,55289,52915,55294,52915,55289,    9,55298,53746,55211,
-46863,55302,53713,55211,46863,55306,31796,55211,25037,55211,25215,55211,
-42338,55211,42076,55211,43053,55211,42959,55211,54575,55211,54339,55325,
-54786,55211,51360,55211,53780,55211,52751,55211, 8148,55211, 9594,55211,
-54377,55211,54439,55211,53758,55211,54700,55211,54826,55211,53286,55211,
-53646,55211,53703,55353,53794,55211,53703,55357,53682,55211,53703,55361,
-53371,55211,  842,55211, 9377,55367,54591,55211,54421,55211,54561,55211,
-53681,55211,53255,55211,54597,55378,  483,55378,53679,55211,54573,55211,
-55131,55211,54559,55211,54435,55211,19892,55211,53772,55211,53667,55396,
-53672,55211,53731,55400,53667,55211,53799,55404,53772,55404,53731,55404,
-46863,55410,46863,55404,53731,55414,  935,55211,20733,55211, 9991,55211,
-41941,55211,  483,55424, 9565,55211,  483,55428, 1487,55211,54597,55211,
-51229,55434,   53,55435, 1471,55435,  253,55435,53731,55434,53255,55434,
-47546,55211,   66,55211, 1369,55451,  241,55211,31103,55454,18967,55211,
-  483,55458,  483,55211,42155,55462,41941,55462,51229,55462,53517,55462,
- 7971,55462, 9565,55462,53731,55462,53255,55462,  587,55462, 9377,55481,
-18967,55462,  587,55463, 9195,55487,52915,55487,53674,55211,53703,55493,
-46863,55495, 1369,55493,46863,55492,53703,55501,53391,55493,53649,55211,
-53731,55506,31103,55211,  241,55510,  587,55511,  113,55211,46863,55516,
-17455,55211,54551,55211, 1369,55523,53391,55523,51229,55211,  375,55528,
-54597,55528,  483,55528, 1011,55211, 8165,55537, 9875,55537,20501,55537,
-   11,55537,  265,55211,    7,55546,51803,55549,54295,55547,47961,55553,
-14611,55553, 4899,55553,  375,55553, 1369,55210,54985,55563,51601,55563,
-54129,55563,  587,55210, 9366,55571,54575,55571,53360,55571, 9195,55571,
-  483,55578,52915,55571,  483,55582,  483,55571, 9195,55586,52915,55586,
-31103,55571,53731,55211,53649,55594,53672,55594,53667,55594,46863,55600,
-  483,55594,54597,55594,46863,55594,53667,55608,  587,55211, 9377,55613,
-  483,55615,  483,55612, 9377,55619,21605,55211,21526,55622,    6,55623,
-21527,55622,55627,55629,    7,55622,    7,55623,55625,55635,    6,55622,
-18967,55638,55635,55641,18967,55622,    6,55645,55633,55647,    6,55644,
-55635,55651, 1347,55211, 1369,55655,53799,55211,53667,55658,    2,55210,
-51418,55663,51416,55663,51398,55663,51354,55663,51909,55663,  340,55663,
-51803,55675,51873,55663,47974,55663,47589,55663, 8590,55663,14620,55663,
-12537,55663,52021,55663,52029,55663,53106,55663,  375,55663,51229,55696,
-52915,55696,    0,55663,    6,55703,    7,55663,  265,55706,51803,55709,
-  265,55707,51229,55713,52915,55713,47580,55663,51803,55719, 8861,55719,
- 8495,55663,47961,55724, 4899,55724,14611,55724,52915,55663,  375,55732,
-14611,55663,51229,55736, 8495,55736, 4899,55663,51229,55742, 8495,55742,
-47961,55663,51229,55748, 8495,55748,  265,55663,    7,55754,51803,55757,
-55705,55755,55704,55754,55761,55763,55705,55754,55704,55755,55767,55769,
-46863,55754, 8861,55773,51803,55773,46863,55663,  265,55778,51803,55781,
- 8861,55781,  265,55779,51229,55787, 8495,55787,51229,55663,  375,55792,
-14611,55792, 4899,55792,47961,55792,    3,55210,54801,55803,52573,55803,
-52115,55803,43053,55803,46863,55803,    2,55211,    7,55814,52205,55817,
-52809,55817,54449,55817,54295,55817,    9,55825,54295,55815,54501,55829,
-    7,55829,54497,55833,  375,55829,    3,55211,55707,55839,52915,55841,
-55706,55839,53793,55838,55779,55839,    6,55839,55732,55851,52915,55851,
-55663,55854,55663,55851,52915,55858,    0,55851,55829,55851,    0,55850,
-55663,55867,    0,55839,    6,55870,55663,55873,    0,55838,49713,55838,
-55845,55879,    1,55838,55868,55883,55874,55883,55867,55883,55663,55888,
-55873,55883,55663,55892,55849,55883,55663,55883,55867,55898,55873,55898,
-46862,55839,55898,55905,55883,55905,55663,55908,55663,55905,55883,55912,
-    1,55839,55863,55917,55663,55919,    7,55839,55663,55922,55879,55925,
-55879,55923,55663,55929,52591,55839,53792,55838,53703,55935,43027,55839,
-43837,55839,39747,55839,53517,55838,53703,55945,46863,55947, 1369,55945,
-46863,55944,53703,55953,53391,55945, 1369,55839,18967,55959,   11,55838,
- 1369,55963,18967,55839,46863,55967,   11,55839,46863,55971,53517,55839,
-53799,55975,55847,55975,53772,55975,53731,55975,46863,55982,46863,55975,
-53731,55986,55778,55839,55877,55991,46863,55839,55877,55995,55663,55997,
-55663,55994,55877,56001,55663,55839,    7,56004,55879,56007,46863,56004,
-55877,56011,46863,55838,53517,56014,53703,56017,53517,56015,53731,56021,
-49204,55211,53517,56024,53703,56027,53517,56025,53731,56031,53792,55211,
-    3,56034,53703,56037,    3,56035,53667,56041, 7971,55211,  483,56044,
-42155,55211,  483,56048,53517,55211,  483,56052,49204,56052,53703,56057,
-49204,56053,53649,56061,    3,56053,53649,56065,53672,56065,53667,56065,
-46863,56070,  483,56065,54597,56065,46863,56065,53667,56078,    3,56052,
-53703,56083,46863,56085, 1369,56083,46863,56082,53703,56091,53391,56083,
-46863,56052,    3,56096,53703,56099,    3,56097,53667,56103,   11,55211,
-    3,56106, 1369,56109,    3,56107,  483,56113,46863,55211,53746,56116,
-53713,56116,53674,56116,53703,56123,53731,56116,53667,56126,53667,56116,
-53731,56130,  113,56116,    3,56116,53517,56136,53703,56139,53517,56137,
-53731,56143,53517,56116,    3,56146,53703,56149,    3,56147,53667,56153,
-46863,49713,47982,56156,47983,56157,56159,56161,47983,56156,47982,56157,
-56165,56167,49588,56156,49589,56157,56171,56173,49670,56156,49671,56157,
-56177,56179,49589,56156,49588,56157,56183,56185,49671,56156,49670,56157,
-56189,56191, 8453,56156,  273,56156,21522,56156,38266,56156, 1516,56156,
-  948,56156,20239,56156,37095,56156, 1477,56156,  281,56156,49617,56156,
-49616,56157,56215,56217,49699,56156,49698,56157,56221,56223,49617,56157,
-49616,56156,56227,56229,49699,56157,49698,56156,56233,56235, 1216,56156,
-  412,56156,12377,56156,  375,56156,  510,56156,38057,56156,  903,56248,
-  165,56156,  903,56252,21315,56156, 1011,56256, 1505,56156, 1011,56260,
-  413,56157,50785,56265,56241,56265, 1217,56157,56239,56271, 1216,56157,
-  413,56156,  412,56157,56277,56279, 1217,56156,56275,56283,  264,56157,
-51777,56287,50908,56287,50785,56287,  241,56292,  241,56287,50785,56296,
-  375,56287,  264,56156,50207,56303,51765,56303,51677,56303,51615,56303,
-  241,56311,  341,56303, 1011,56156, 1505,56316,21315,56316,  903,56156,
-  165,56322,38057,56322,  483,56156,    9,56328,    9,56156,  483,56332,
-    5,56157,    4,56156,56337,56339,46863,56340,    2,56343,    2,56342,
-49515,56340,49514,56340,    2,56341,56349,56353,    3,56341,56347,56357,
-56351,56357,    2,56340,46863,56362,56357,56365,56357,56363,    3,56340,
-56345,56371,56353,56371,    3,56157,  375,56377,    2,56156,56337,56381,
-    1,56383,    0,56382,56385,56387,    0,56383,    1,56382,56391,56393,
-56377,56381,46863,56396,    4,56399,    4,56398,49631,56396,49630,56396,
-    4,56397,56405,56409,    5,56397,56403,56413,56407,56413,    4,56396,
-46863,56418,56413,56421,56413,56419,    5,56396,56401,56427,56409,56427,
-    2,56157,    3,56156,56337,56435,    7,56437,    6,56436,56439,56441,
-    6,56437,    7,56436,56445,56447,56433,56435,46863,56451,    4,56452,
-    4,56453,49631,56451,49630,56451,    4,56451,46863,56462,    5,56451,
-56457,56467,    4,56450,56467,56471,56459,56471,    5,56450,56465,56477,
-56455,56477,56463,56477,56461,56477,    4,56157,56435,56487,    1,56489,
-    0,56488,56491,56493,    0,56489,    1,56488,56497,56499,56381,56487,
-    7,56503,    6,56502,56505,56507,    6,56503,    7,56502,56511,56513,
-    5,56156,56487,56517,46863,56519,    2,56520,    2,56521,49515,56519,
-49514,56519,    2,56519,46863,56530,    3,56519,56525,56535,    2,56518,
-56535,56539,56527,56539,    3,56518,56533,56545,56523,56545,56531,56545,
-56529,56545,    1,    2,11709,56555,11632,56555,11035,56555,10468,56555,
-17775,56555,11788,56555,12226,56555,11816,56555,11770,56555,44558,56555,
-42181,56555,44243,56576,44438,56555,10856,56555, 3447,56555,  375,56584,
- 3448,56555,11705,56555,11033,56555,10516,56555,17773,56555,18735,56555,
-10427,56555,10831,56600,10836,56555,10855,56555,16623,56555,16711,56555,
- 9533,56610,16718,56555, 3555,56555, 5882,56555, 9261,56555,  483,56621,
- 3699,56555,   15,56625,    6,56624,56627,56629,   14,56625,    7,56624,
-56633,56635, 1999,56555,   15,56639,    6,56638,56641,56643,   14,56639,
-    7,56638,56647,56649,29450,56555,29731,56653,29659,56653,28791,56653,
-29041,56653,38067,56555,    5,56663,38185,56665,42155,56554,44243,56669,
-42471,56670,44966,56669,42471,56669,44243,56676, 1471,56554,36639,56681,
-15390,56555,15383,56685,28715,56555,21527,56689,29229,56691,    7,56689,
-29759,56695,    7,56688,28791,56699,29041,56699,29731,56699,29659,56699,
- 1005,56555,16877,56554,16893,56711, 9925,56555, 1369,56715, 9927,56717,
-35336,56555,  989,56721,35278,56555, 1177,56725,  987,56555,35187,56728,
-  989,56731,36563,56554,36639,56735,  671,56554,36597,56554,36639,56741,
- 1418,56554,    1,56745,    4,56746,    4,56745,    1,56750,  147,56555,
-35187,56754,   53,56757,17637,56555,  587,56760,10107,56763,35316,56555,
- 1471,56767,35330,56555,   53,56771,17638,56555,10107,56775, 1489,56555,
-35187,56778, 1471,56781, 1179,56555,35187,56784, 1177,56787,37229,56555,
-35187,56790,37223,56793, 9441,56555,  587,56796, 9439,56799,37230,56555,
-37223,56803, 9442,56555, 9439,56807,45432,56555,42435,56811,   30,56555,
-11731,56814,45433,56555,56669,56819,43099,56555,52259,56555,  483,56825,
-44742,56555,44904,56555,52613,56555,52383,56555,52497,56555,39231,56555,
-40447,56555,39083,56555,38797,56555,39019,56555,39301,56555,39429,56555,
-39305,56555,  386,56555,  347,56555,54492,56555,45508,56555,56116,56555,
-55812,56555,40987,56555,52909,56555,51598,56555,50419,56555,56332,56555,
-52836,56555,52366,56555,36639,56555, 1471,56881,36563,56881,36597,56881,
-  181,56555,11731,56888,50579,56555,52319,56555,52323,56555,54436,56555,
-54406,56555,52532,56555,52514,56555,55520,56555,44930,56555,39317,56555,
-51141,56555,40123,56555,39228,56555,40676,56555,47366,56555,40682,56555,
-52599,56555,50655,56555,52531,56555,36538,56555,36048,56555,37594,56555,
-42918,56555,40922,56555,39292,56555,11111,56555,11113,56555,11187,56555,
-17508,56555,17180,56555, 3280,56555, 3574,56555, 3568,56555,12216,56555,
-   25,56958,11613,56555,   25,56962,48406,56555,48400,56555,48500,56555,
-43292,56555,47534,56555,17494,56555,39065,56555,48961,56555,49162,56555,
-17496,56555,11179,56555,47892,56555,11546,56555,11207,56555, 5878,56555,
-52446,56555,35506,56555,39035,56555,40087,56555,    9,57003,10513,56555,
-    9,57006,36102,56555,  253,57011,   53,57011,  117,57011, 1471,57011,
- 7968,56555,53813,57021,10107,57021,11067,57021,37282,56555,53813,57029,
-37417,57029,10107,57029,35652,56555,  253,57037, 1471,57037,  809,57037,
-   53,57037,38293,56555,53813,57047,37417,57047,38275,57047,10107,57047,
- 1397,56555,35187,57056,52439,56555,  265,57060,40127,56555,43318,56555,
-48750,56555,53813,57069,10107,57069,36100,56555,  253,57075,   53,57075,
- 1471,57075, 9404,56555,  483,57083, 8053,56555,    9,57087,10465,56555,
-    9,57090,11936,56555,10119,56555,10185,56555,53885,56555,10117,56555,
-45490,56555,   33,57105, 8212,56555,    9,57109,11812,56555,    9,57112,
-53899,56555, 6719,56555,   11,57119,    5,57120,    6,57119,    5,57124,
-    5,57119,    6,57128,    6,57129,    7,57119,57133,57135,   15,57119,
-    6,57118,57139,57141,   14,57119,    7,57118,57131,57147,57127,57147,
-57123,57147,57145,57147, 6787,56555,    5,57157,    4,57157,   12,57157,
-   13,57156,57163,57165,   13,57157,   12,57156,57169,57171,    5,57156,
-57161,57175,    4,57156,57159,57179,10831,56555,  375,57182,44243,57182,
-10427,57182,    9,57183,11529,56555,46863,57192,  483,57192,17640,56555,
-39226,56555,48572,56555,47410,56555,40568,56555,47374,56555,47674,56555,
-17656,56555,47676,56555,47634,56555,48112,56555,47412,56555, 5814,56555,
-  918,56555,36256,56555,46863,57226,48466,56555,49713,57230,35187,57230,
-   11,57231,47608,56555,  903,57238,52756,56555,46863,57242,48620,56555,
-  247,56555,46863,57248, 1419,56555,56749,57253,56753,57253,25519,57253,
- 1841,57253, 1883,57253,22679,57253,    5,57253,22677,57267,14065,57253,
- 5175,57253,40565,56555,  587,57274,  922,56555,51593,56555,46863,57280,
-47640,56555,   11,57285, 1011,57284,   11,57284,35718,56555, 9439,57293,
-37223,57293, 9381,57293,37157,57293,35877,57293,35881,57293, 9383,57293,
-37163,57293,35883,57293,   17,57293,37145,57313, 9377,57313,35867,57313,
-51051,56555,  375,57321,50959,56555,    9,57325,39205,56555,   10,57329,
-   10,57328,   11,57329,57333,57335, 1011,57328,   11,57328,57331,57341,
-48402,56555,    9,57344,48560,56555,  903,57348,36544,56555,    6,57353,
-36661,57355,36675,57353, 8067,57353, 7979,57353, 7981,57353,39747,57353,
-43837,57353,43027,57353, 1369,57353, 7971,57373,  934,56555,46863,57376,
-  668,56555,    5,57381,22605,57383,22615,57381, 3135,57381, 2009,57381,
-14065,57381, 5175,57381,53905,56555,55432,56555,10303,56555,42661,56555,
-   25,56555,11613,57404,12216,57404,    9,57404,11731,57410,35187,57404,
-  253,57415,   53,57415,  117,57415, 1471,57415,11731,57404,    9,57424,
- 8165,56555,   67,57428,    9,57431, 7947,56555,  587,57434,53813,57437,
-10107,57437,11067,57437,17049,56555,46863,57444,  165,56555,43215,57448,
-  113,56555,54295,57452,  767,56555,  483,57457, 9377,57459, 9377,57456,
-  483,57463,  803,56555,17455,57466,  375,56555,10831,57470, 3447,57470,
-  305,57470,17125,57470,  510,56555,   11,56555,   33,57483,44243,57485,
-44243,57482,   33,57489,39205,57482,47640,57482,46863,57482,  903,57496,
-35187,57482,43027,57501,43837,57501, 8067,57501, 7979,57501,39747,57501,
- 7981,57501, 1369,57501, 7971,57515,  903,57482,46863,57518,    9,56555,
-10465,57522,11812,57522,10513,57522,   25,57522,11731,57530,56156,57522,
-40675,57522, 3565,57522, 3573,57522, 3273,57522,11731,57522,   25,57544,
-48402,57522,17455,57522, 5843,57522,   11,57523,46863,57555,49713,57522,
-46863,57558,  903,57522,35187,57522,46863,57564,46863,57522,49713,57568,
-35187,57568,   11,57569,  587,57522, 5175,57577,14065,57577, 3135,57577,
- 2009,57577,  483,57522,55839,56555,  483,57589, 5771,56555,  903,57592,
- 6705,56555, 1369,57597, 6707,57599, 6711,57599, 6715,57599, 3697,56555,
-   16,57607,   16,57606,   17,57607,57611,57613,   17,57606,57609,57617,
- 3709,56555, 8075,56555,    9,57623, 3273,56555,    9,57626, 3423,56555,
-   16,57631,   16,57630,   17,57631,57635,57637,   17,57630,57633,57641,
- 3661,56555,   16,57645,   16,57644,   17,57645,57649,57651,   17,57644,
-57647,57655, 3681,56555, 3357,56555,53675,56555,    9,57663,42379,56555,
-    9,57667, 3573,56555,    9,57670, 3565,56555,    9,57674,52878,56555,
-15436,56555,  375,57681,54550,56555,17232,56555,38305,57686, 4935,56555,
-    6,57691,    5,57692,    7,57691,    5,57691,    6,57698,    6,57699,
-57697,57703,    6,57690,   15,57691,57707,57709,    7,57690,57695,57713,
-57701,57713,   14,57691,57713,57719,55803,56555,46863,57722,16127,56555,
-    6,57727,    5,57728,    7,57727,    5,57727,    6,57734,    6,57735,
-57733,57739,    6,57726,   15,57727,57743,57745,    7,57726,57731,57749,
-57737,57749,   14,57727,57749,57755,54477,56555,46863,57758,49155,56555,
-  483,57762, 5843,56555,  955,57766,    9,57766, 5313,56555, 9802,56555,
-48736,56555, 9434,56555,  483,57779,15309,56555,  413,57782,15383,57785,
-  413,57783,15335,57789,    8,56554,    4,57793,    1,57794,57381,57797,
-57577,57797,    1,57793,    4,57802,57381,57805,57577,57805,   10,56554,
-    7,57811,    2,57812,57353,57815,57501,57815,    2,57811,    7,57820,
-57353,57823,57501,57823,57515,57811,57373,57811, 1368,57811,57501,57833,
-57353,57833, 3867,57811, 8277,57811, 3997,57811, 4067,57811, 9459,57811,
- 8953,57811,57483,57811,    9,57811,   14,56555,38881,57855,   11,56554,
-44778,57859,44243,57859,   25,57862,47640,57859,   25,57859,44243,57868,
-48466,57859,  903,57859,46863,57874,46863,57859,  903,57878,    9,57878,
-    9,57859,46863,57884,    9,56554,40903,57889,40053,57889,43307,57889,
- 5019,57889,12361,57889,   16,56555,19625,57901,21105,57901,21549,57901,
-17591,57901,   17,56554,36639,57911,   10,56555,57859,57915,11731,56555,
-   30,57918,  181,57918,54295,57918,    9,57918,   25,57926,  145,57918,
-   25,57918,    9,57932,   67,56555,    9,57937, 8165,57939, 8165,57936,
-    9,57943,17635,56555,  155,57946,  903,57946,  145,56555,11731,57952,
-17695,56555, 1369,57957, 7971,57959,53517,57959,17053,57959,17699,57959,
-42155,57959,  155,56555,17635,57970,10305,56555,42699,56555,10307,56555,
-  566,56555,53813,57981,10107,57981,  256,56555,42810,56555,17125,57988,
- 1170,56555,  629,56555, 1413,56555,37408,56555,25793,57999,41019,57999,
- 8495,57999,  265,57998, 1346,56555,48884,56555,27021,58011,52915,58011,
- 9195,58011,20763,58011,  340,56555,  331,58021,35187,58020,38270,56555,
-  766,56555,25519,58029,  802,56555, 9366,58033, 9195,58033,  483,58036,
-  483,58033, 9195,58040,31103,58033,42729,56555,  257,56555,44243,58048,
- 1487,56555,55211,58052,44243,56555,10831,58056,42181,58056,42155,58057,
-42471,58063,42155,58056,42435,58067, 9533,58056,37145,58056,   11,58057,
-   25,58075,35187,58056,17125,58056,   11,58056,   33,58083,49713,58056,
-  257,58056,55211,56555,46863,58090,17455,58090, 1487,58090, 1197,56555,
-    4,58099,    5,58098,58101,58103,    5,58099,    4,58098,58107,58109,
- 1505,56555,45002,56555,42155,56555,42435,58117,44243,58119,44243,58116,
-42435,58123,  305,56555,  375,58126,35187,58126,  253,58131, 1471,58131,
-   53,58131,  713,56555,35187,58138,  253,58141, 1471,58141,  809,58141,
-   53,58141,37241,56555,  587,58150,53813,58153,37417,58153,10107,58153,
-  955,56555, 5843,58160,48739,56555,  587,58164,53813,58167,10107,58167,
-40461,56555,    9,58173,52501,56555,35187,58176,  241,58176, 9801,56555,
-   17,58182,    4,58183,58185,58187,    5,58183,57901,58191,    4,58182,
-    7,58194,58191,58197,    5,58182,48735,56555,   17,58202,    4,58203,
-58205,58207,    5,58203,57901,58211,    4,58202,    7,58214,58211,58217,
-    5,58202, 9533,56555,16711,58222,44243,58222,37145,56555,44243,58228,
- 8861,56555,    5,58233,    6,58235,    6,58234,   14,58233,   15,58233,
-    6,58233,    5,58244,    7,58233,58237,58249,    6,58232,58243,58253,
-    7,58232,58239,58257,58247,58257,58241,58257, 9377,56555,  767,58264,
-  483,58267,    4,58264,  483,58271, 1217,56555,  483,58275,  413,56555,
-15309,58278,15383,58281,15309,58279,15363,58285,46863,58278,  412,56555,
-  483,58291, 1216,56555,46863,58294,56156,56555,    9,58298, 1011,56555,
-39205,58302,47640,58302,46863,58302,  903,58308,    7,58302,  903,58302,
-46863,58314,43215,58302,    7,58319,38305,56555,17232,58322,    7,58322,
-17125,58326,17125,58322,    7,58330,49713,56555,48466,58334,    9,58334,
-46863,58338,44243,58334,46863,58334,    9,58344,  241,56555,52501,58348,
-    7,58348,    7,58349,  265,58355,  265,58348,  483,58359,  483,56555,
-40675,58362,43215,58362,49155,58362,11529,58362,  903,58362,    9,58362,
-    5,58362,53813,58377,10107,58377,    5,58363,55211,58383,40675,56555,
-    7,58387,    9,58386,  483,58386,46863,58386,35187,56555,37229,58396,
-37223,58399, 1177,58397, 1179,58403,  989,58397,  987,58407, 1179,58396,
- 1177,58411,  987,58396,  989,58415, 1489,58396, 1471,58419,  147,58396,
-   53,58423,  117,58397,   25,58427,  809,58397,  713,58431,    2,58396,
-    7,58435,    2,58436,58397,58439,    5,58436,58441,58443,    5,58435,
-    7,58446,   10,58435,    4,58396,    7,58453,    4,58454,58397,58457,
-    3,58454,58459,58461,    3,58453,    7,58464,  586,58453, 1368,58396,
-    7,58471,    5,58472,    5,58471,    7,58476,   10,58471,   16,58396,
-    7,58483,    3,58484,    3,58483,    7,58488,  586,58483,44243,58396,
-52501,58396,  340,58396,48466,58396, 1397,58396,   25,58396, 1471,58505,
-  253,58505,   53,58505,  117,58505,  713,58396,   53,58515,  253,58515,
- 1471,58515,  809,58515,   53,58397,  147,58525,  305,58525,  713,58525,
-   25,58525, 1471,58397, 1489,58535,  305,58535,   25,58535,  713,58535,
-  305,58396,  253,58545, 1471,58545,   53,58545,  253,58397,  305,58553,
-   25,58553,  713,58553,    9,58396,46863,58560, 1369,58397, 9891,58565,
- 9927,58565,58475,58565,58479,58565,58443,58565,58449,58565,    4,58565,
- 9895,58565,19687,58565,20843,58565,21127,58565,58451,58565,58481,58565,
-   11,58565, 9875,58593,58435,58593,58471,58593,   17,58397,10111,58601,
-10159,58601,58487,58601,58491,58601,36729,58601,58461,58601,58467,58601,
-    2,58601,10113,58601,58469,58601,58493,58601,  587,58601,10107,58625,
-58453,58625,58483,58625,46863,58396,    9,58632,   11,58396,57815,58637,
-57823,58637, 8067,58637, 7979,58637,    3,58637,58601,58647,58617,58637,
- 7981,58637,39747,58637,43027,58637,43837,58637,57833,58637, 1369,58637,
- 7971,58663,57811,58663,  587,58396,35877,58669,35881,58669, 9439,58669,
- 9381,58669,    5,58669,58565,58679,58579,58669,37223,58669,37157,58669,
- 9383,58669,37163,58669,35883,58669,   17,58669, 9377,58695,37145,58695,
-35867,58695,    6,58396,    7,58396,25793,58705,41019,58705, 8495,58705,
-  265,58704,    6,58397,36661,58715,58705,58715,57999,58715,    7,58397,
-58703,58723,58027,58723,  265,58396,    6,58728,    7,58728,    6,58729,
-58733,58735,    7,58729,58731,58739,  903,56555,17455,58742,17635,58742,
-47608,58742, 5771,58742,48560,58742,   11,58743,46863,58755,    9,58742,
-  483,58742,46863,58742,   11,58763, 1011,58762,   11,58762,   11,58742,
-46863,58770,    7,58743, 8165,58775, 1011,58742,46863,58778,46863,56555,
-21036,58782,21036,58783,21037,58782,58787,58789,21037,58783,58785,58793,
-54477,58782,55211,58782,55803,58782,52756,58782,51593,58782,40675,58782,
-43215,58782,36256,58782,11529,58782,  934,58782,  247,58782, 1216,58782,
-  413,58782,17049,58782,   11,58783,  903,58825,    9,58825,    9,58782,
-49713,58830,35187,58830,   11,58831, 1011,58782,  903,58838,35187,58782,
-    9,58842,  903,58782,   11,58847, 1011,58846,   11,58846,   11,58782,
-  903,58854,    5,58782,27021,58859,52915,58859, 9195,58859,20763,58859,
-49713,58782,    9,58868, 1275,56555,   17,58872,    4,58872,    7,58876,
-    5,58872,    4,58873,58875,58883,    5,58873,58879,58887,57901,58887,
-  265,56555,37408,58892,52439,58892,    7,58892,  331,58899,35187,58898,
-    7,58893,  375,58905,  241,58892,  483,58909,38305,58893,  375,58913,
-35187,58892,    6,58916,    7,58916,    6,58917,58921,58923,    7,58917,
-58919,58927,  587,56555, 9441,58930, 9439,58933,17637,58930,10107,58937,
-37417,58931,37241,58941,11067,58931, 7947,58945,    7,58930,    4,58949,
-    7,58950,58931,58953,    0,58950,58955,58957,    0,58949,    4,58960,
-35186,58949,    1,58930,    4,58967,    1,58968,58931,58971,    6,58968,
-58973,58975,    6,58967,    4,58978,    8,58967,   16,58930,    4,58985,
-    0,58986,    0,58985,    4,58990,35186,58985,22807,58931,37241,58930,
-10107,58999,53813,58999,37417,58999, 7947,58930,53813,59007,10107,59007,
-11067,59007,10107,58931,17637,59015,48739,59015,37241,59015, 7947,59015,
-48739,58930,53813,59025,10107,59025,53813,58931,48739,59031,37241,59031,
- 7947,59031,40565,58930,   17,58931, 1985,59041, 3721,59041,58989,59041,
-58993,59041, 5299,59041,58957,59041,58963,59041,    1,59041,35233,59041,
-35917,59041, 4861,59041,17563,59041,58965,59041,58995,59041,35187,59041,
-   53,59071,58949,59071,58985,59071,35187,58930,35881,59079,35877,59079,
-37223,59079,37157,59079,    6,59079, 9439,59079, 9381,59079,37163,59079,
- 9383,59079,35883,59079,   17,59079,37145,59101, 9377,59101,35867,59101,
-    9,58930,57797,59109,57805,59109, 3135,59109, 2009,59109,    0,59109,
-59041,59119,59057,59109, 5175,59109,14065,59109,    4,58930, 9366,59129,
- 9195,59129,  483,59132,  483,59129, 9195,59136,31103,59129,    5,58930,
-25519,59143,    5,58931,25503,59147,24623,59147,30387,59147,58565,59147,
-22605,59147,36526,56555,    6,59158,    7,59158,    6,59159,59163,59165,
-    7,59159,59161,59169,40920,56555,    7,59172,43400,56555,    7,59177,
-16065,56555,    5,59181,    7,59182,    7,59183,56555,59186,    6,59182,
-59189,59191,    6,59183,56555,59183,    7,59196,59191,59199,    7,59197,
-59195,59203,15029,56555,    5,59206,    6,59209,    6,59208,   14,59206,
-   15,59206,    6,59206,    5,59218,    7,59206,59211,59223,  375,59223,
-    6,59207,59217,59229,    7,59207,59221,59233,59213,59233,   59,59233,
-59215,59233,  331,59233, 1325,59233,  265,59233,43215,56555,    9,59249,
-  483,59248,46863,59248,  165,59248, 1011,59248,    7,59259,17125,56555,
-    4,59262,    7,59265, 1011,59266, 1011,59265,    7,59270,    7,59271,
- 1170,59265,    5,59263,57993,59279,58313,59279,17129,59279,42811,59263,
-42811,59262,44243,59262,42810,59262,59287,59293,42810,59263,59289,59297,
-  375,59262,    6,59262,59269,59303,59273,59303,59277,59303,    7,59262,
-38305,59310,    6,59263,59275,59315,59311,59315,    7,59263,59303,59321,
-38305,59262,    7,59324,54295,56555,11731,59328,  113,59328,    5,59328,
-    5,59329,57901,59337,17455,56555,    7,59341,    4,59342,    4,59343,
-   16,59341,   17,59341,55211,59340,  803,59340,  903,59340,    9,59340,
-    4,59340,59351,59361,    5,59340,59345,59365,59349,59365,    4,59341,
-    7,59370,59365,59373,    5,59341,59347,59377,    4,56554,26454,59381,
-26375,59381, 8672,59381, 8743,59381,41692,59381,41607,59381, 8770,59381,
- 8729,59381, 3795,59381,47953,59381,48062,59381,47961,59381,48009,59404,
-48009,59381,47961,59408,26219,59381,26415,59412,41417,59381,41653,59416,
-44832,59381,31770,59381, 8757,59381, 8647,59424,41653,59381,41417,59428,
-26415,59381,26219,59432, 8647,59381,  305,59436, 8757,59436, 8605,59381,
-47580,59381,47933,59445, 8684,59381, 8717,59449, 8916,59381,44243,59381,
-  483,59454,41502,59381,41559,59459,  340,59381, 8717,59463, 3785,59463,
- 8495,59463,  375,59381, 8861,59470,46863,59470,47488,59381,26292,59381,
-26331,59479,    9,59381,31103,59482,  305,59381, 8647,59486,    7,59381,
-    1,59491,  264,59492,  264,59493,25793,59491,26415,59499,41019,59491,
-41653,59503, 8495,59491,  305,59507, 8757,59507, 8495,59490, 8717,59513,
-41019,59490,41559,59517,  265,59491,59497,59521, 8861,59521,46863,59521,
-25793,59490,26331,59529,  265,59490, 8717,59533,59495,59533, 3785,59533,
- 8495,59533,31103,59381,    9,59542,  483,59381,44243,59546,46863,59381,
-  265,59551,48009,59553,  265,59550,47933,59557,  375,59550,41019,59381,
-    7,59563,41417,59565,    7,59562,41559,59569,  265,59381,46863,59573,
-47961,59575,46863,59572,47933,59579,    7,59573, 8647,59583,    7,59572,
- 8717,59587, 3785,59587, 8495,59587,25793,59381,    7,59595,26219,59597,
-    7,59594,26331,59601, 8495,59381,    7,59604, 8717,59607,    7,59605,
- 8647,59611, 8861,59381,  375,59614,    5,56554,26777,59619, 9741,59619,
- 9745,59619,26781,59619,30349,59619,26857,59619,26933,59619,    2,59619,
-    7,59634,57353,59637,57501,59637,58637,59637,    6,59635, 9777,59619,
- 1368,59619,57501,59649,57353,59649,58637,59649,57515,59619,57373,59619,
-58663,59619, 9771,59619,40077,59619,31598,59619,55462,59619,50733,59619,
-37519,59619,35690,59619, 8982,59619,55211,59619,  483,59678,  668,59619,
- 9731,59683,26625,59683, 1419,59619, 9731,59689,26625,59689,   17,59619,
- 8861,59694,    9,59619,  587,59698, 9731,59701,26625,59701,  375,59619,
-35187,59706,    6,59619,    7,59619,    5,59713,    2,59712,57353,59717,
-57501,59717,58637,59717,    5,59712,58396,59725,59717,59727,35187,59725,
-56555,59730,59717,59733,56555,59725,35187,59736,59717,59739,    7,59618,
- 3867,59743, 8277,59743, 3997,59743, 4067,59743, 9459,59743, 8953,59743,
-31103,59619,26625,59756,  483,59619,55211,59760,  587,59619,    9,59764,
- 9731,59767,26625,59767,35187,59619,  375,59772,26625,59619,31103,59776,
- 8861,59619,    7,59781,   17,59780,    6,56554,36633,59787,36627,59787,
-    1,59787,    4,59792,57253,59795,57381,59795,57577,59795,59109,59795,
-    5,59792,38304,59787,39987,59787,36544,59787, 9875,59811,20501,59811,
-   11,59787,35187,59816,20501,59819, 9875,59819,    5,59787,    1,59824,
-    4,59787,    6,59829, 1369,59831,56555,59833,    1,59828,57253,59837,
-57381,59837,57577,59837,59109,59837,59835,59837,    6,59828,58930,59849,
-59837,59851,  587,59849,56555,59854,59837,59857,56555,59849,  587,59860,
-59837,59863,35187,59787,   11,59866,20501,59869, 9875,59869,    7,56554,
- 4904,59875,17586,59875,17609,59875,40685,59875,40039,59875,42991,59875,
- 9484,59875,  272,59875, 1476,59875,  280,59875,  949,59875, 1517,59875,
- 1197,59875, 4903,59875,    9,59902,17579,59875,    9,59906,   11,59875,
- 9377,59910,    9,59875, 4903,59914,17579,59914,  253,59875,  265,59920,
-   53,59875,  265,59924, 1471,59875,  265,59928,    5,59874, 3867,59933,
- 8277,59933, 4067,59933, 3997,59933, 8953,59933, 9459,59933,  265,59875,
-  253,59946, 1471,59946,   53,59946, 9377,59875,   11,59954,    5,59955,
-    7,56555,59826,59960,59827,59961,59963,59965,59827,59960,59826,59961,
-59969,59971,59804,59960,59805,59961,59975,59977,59805,59960,59804,59961,
-59981,59983,21036,59960,14072,59960,14073,59960,14072,59961,59991,59993,
-59183,59960,59191,59997,59183,59961,59185,60001, 4970,59960, 4971,59960,
- 4970,59961,60007,60009,16169,59961, 9617,60013,39786,59961,59807,59961,
-59806,59961,28715,59960,28791,60023,29731,60023,29659,60023,29041,60023,
-21036,59961,21037,59960,60033,60035,38304,59961,59787,60038,  483,60038,
-38304,59960,60019,60045,59787,60045,  483,60045,18967,59961,    5,60053,
-    5,60052,    2,59961,    0,60059,56555,60061,    5,60063,59961,60065,
-    7,60064,60067,60069,59960,60065,    6,60064,60073,60075,    1,59961,
-    3,60079,    5,60081,56555,60082,56555,60081,    5,60086,    5,60087,
- 1011,60079,56555,60093,    5,60079,    1,59960,21036,60099,    3,60099,
-56555,60103,    5,60105,    5,60104,    5,60103,56555,60110,    5,60099,
-18967,60114,18967,60099,    5,60118,    5,60119,    2,59960,59811,60125,
-36545,60125,59787,60129,59819,60125,59869,60125,   15,60125,29659,59961,
-29077,60139,39787,59961,60045,60143,32103,59961,41746,59961,26106,59961,
- 8800,59961,36526,59960,40920,59960, 1163,59961,41019,59961,   11,60160,
-35187,60161,59619,59961, 4971,59961,60005,60169,14073,59961,59989,60173,
- 4555,59961,  559,59961,   39,59961, 8495,59961,35187,60183,   11,60182,
-15029,59960,  375,60189,17125,59960,38305,60192,   11,59961,41019,60196,
-25793,60196, 8495,60196,  265,59961, 3447,60205,10831,60205,  305,60205,
-17125,60205,11731,60205,  567,59961,46863,60217,   15,59961, 3651,60221,
- 1993,60221, 4903,60221,17579,60221,  241,59960,38305,59960,60017,60233,
-60021,60233,60041,60233,60043,60233,60039,60233,59787,60243,  483,60243,
-17125,60232, 1011,59960,59279,60251,21037,59961,59987,60255,   11,60255,
-28715,59961,29533,60261,20273,60261, 9617,60261,35187,59960,25793,60269,
-41019,60269, 8495,60269,58715,60269,  265,60268,  265,59960,  331,60281,
-35187,60280,38305,59961,37845,60287,37844,60286,60289,60291,37844,60287,
-37845,60286,60295,60297,60048,60287,59787,60287,60045,60302,60050,60287,
-60045,60287,59787,60308,  483,60308,  483,60287,60045,60314, 1011,59961,
-25793,59961,35187,60321,   11,60320,    4,59960,60091,60327,60107,60327,
-60033,60327,60101,60327,59337,60327,58191,60327,58211,60327,60057,60327,
-60117,60327,60121,60327,21549,60327,21105,60327,19625,60327,58887,60327,
-17591,60327,    5,59960,    1,60359,    3,60361,60205,60363,60255,60359,
-    4,59961,60085,60369,60089,60369,60113,60369,60109,60369,57685,60369,
-59335,60369,58201,60369,58221,60369,57775,60369,57777,60369,60095,60369,
-60055,60369,60123,60369,31103,60369,21575,60369,58881,60369,58009,60369,
-17579,60369, 4903,60369,48408,60369,46863,60369,  483,60410,  483,60369,
-46863,60414,    5,59961,18967,60418,60327,60421, 1368,60419,    2,60419,
-    7,60426,    7,60419,    2,60430,59787,59961,38304,60435,60287,60437,
-38304,60434,60233,60441,  483,59961,38304,60445,60287,60447,38304,60444,
-60233,60451,    5,56555,60081,60454,60369,60457,60103,60454,60369,60461,
-    1,60455,    3,60464,    1,60454,59491,60469,59490,60469,59381,60469,
-    7,60474,    7,60475,    5,60469,59961,60481,    6,60468,60473,60485,
-60477,60485,    7,60468,60471,60491,59381,60491,    6,60469,59381,60497,
-60491,60498,60479,60497,60494,60497,60491,60497,59381,60506,    7,60469,
-59381,60510,60485,60513,60485,60511,59381,60517,    2,60454,60261,60521,
-60483,60521,53813,60455,  483,60527,52915,60455,46863,60531,59875,60455,
- 9801,60454,60369,60537,48735,60454,60369,60541,10107,60455,  483,60545,
- 9195,60455,46863,60549,54295,60454,60369,60553,  587,60455,17455,60557,
-11731,60557,    9,60455, 8861,60563,   17,60455,  587,60567,26625,60569,
- 9731,60569,60467,60569,  483,60454,53813,60577,10107,60577,20763,60455,
-46863,60583,46863,60454,27021,60587,52915,60587, 9195,60587,20763,60587,
- 1275,60454,60369,60597,  587,60454,25519,60601,27021,60455,46863,60605,
-    6,60454,38881,60609,59381,60455,30091,60455,31103,60615,    4,56555,
-    2,60619,    0,60621,56555,60623,    5,60625,    7,60621,60627,60629,
-    1,60618,59689,60633, 1418,60633,59619,60637,59683,60633,  669,60633,
-59619,60643,60569,60633,59701,60633,59767,60633,   15,60633, 1369,60652,
-59619,60655, 1369,60633,   15,60658,59619,60661,  842,60619, 9377,60665,
-59787,60619, 9377,60618,  483,60671,  587,60619,  483,60674, 9377,60677,
- 9377,60675,  483,60681,21527,60619,    9,60685,31103,60619,  587,60689,
-  587,60618, 9366,60693, 9195,60693,  483,60696,  483,60693, 9195,60700,
-31103,60693,  483,60619,  587,60706, 9377,60709, 9377,60707,  587,60707,
- 9195,60715,    7,60618,59337,60719,58191,60719,58211,60719,21105,60719,
-21549,60719,19625,60719,58887,60719,17591,60719,    6,60619,    1,60737,
-    4,60738,    4,60737,    1,60742, 1369,60737,56555,60747,60741,60749,
-60745,60749,    7,60619,    2,60755,21183,60755, 9377,60755,59619,60619,
-38305,60619,    3,60764,    2,60764,56555,60765,    6,60770,60769,60773,
-    6,60765,56555,60776,60769,60779, 1011,60619,46862,60782,46862,60783,
-46863,60783,60785,60789,46863,60782,60787,60793,    6,56555,36303,60797,
-36302,60796,60799,60801,36303,60796,36302,60797,60805,60807,40946,60796,
-40946,60797,60765,60796,60769,60815,    2,60797,    0,60818,40947,60796,
-60813,60823,40947,60797,60811,60827,60765,60797,60767,60831,59381,60797,
-   17,60797,35187,60837,20501,60839,60125,60839,60821,60839, 9875,60839,
-35187,60796,58723,60849,    5,60796,38881,60853,    0,    3, 8169,60857,
- 8028,60857, 8173,60857, 8214,60857, 8167,60857, 8154,60857, 8026,60857,
- 8054,60857,17728,60857,60210,60857,60283,60857,58128,60857,58023,60857,
-57476,60857,56854,60857,56856,60857,58901,60857,58906,60857,58122,60857,
-58066,60857,56810,60857,56822,60857,16743,60857,16696,60857, 4810,60857,
-16745,60857,16729,60857,16714,60857, 6648,60857, 2079,60857,  375,60916,
- 2086,60857,16733,60857,16565,60857,16683,60924,16692,60857,16735,60857,
-16739,60857,51942,60857,44534,60857,42383,60857,44243,60938,44440,60857,
-16747,60857,   75,60857, 6625,60946, 6632,60857, 6645,60857,60079,60857,
-    5,60955,60327,60957,    5,60954,60369,60961,60096,60857,60369,60965,
- 1325,60856,40829,60969, 1173,60857,17591,60856,17603,60975,10039,60857,
- 1275,60979,10041,60981,38560,60857, 1205,60985, 1203,60857,38305,60988,
- 1205,60991,38514,60857, 1007,60995,40741,60856,40829,60999,  531,60856,
- 1290,60856,    0,61005,    5,61006,    5,61005,    0,61010,40769,60856,
-40829,61015,38548,60857, 1325,61019,  177,60857,38305,61022,   59,61025,
-17053,60857,  483,61028,10081,61031, 1009,60857,38305,61034, 1007,61037,
- 1365,60857,38305,61040, 1325,61043,38566,60857,   59,61047,17054,60857,
-10081,61051,42109,60857,38305,61054,42103,61057, 9527,60857,  483,61060,
- 9525,61063,42110,60857,42103,61067, 9528,60857, 9525,61071,  386,60857,
-56555,61074, 8150,60857,  113,61078,  347,60857,56555,61082,58905,60857,
-  375,61086,45432,60857,56555,61090,43099,60857,56555,61094,40829,60857,
- 1325,61099,40741,61099,40769,61099,60535,60857,    9,61107,57916,60857,
-    9,61111,57851,60857,    9,61115,17727,60857,  113,61118,57060,60857,
- 8309,60857,60230,60857,57986,60857,57998,60857,60268,60857,58352,60857,
-58704,60857,13820,60857,13772,60857,57994,60857,58056,60857,42155,61144,
-36101,60857,  375,61149,37407,60857,47392,60857,36532,60857,36536,60857,
-57284,60857,58760,60857,58762,60857,58846,60857,58372,60857,57278,60857,
-57996,60857,57470,60857,  305,61174,60205,60857,  305,61178,58374,60857,
-58830,60857,57586,60857,57480,60857,57230,60857,57568,60857,40684,60857,
-36542,60857,  375,61197,42990,60857,40038,60857,37498,60857,36754,60857,
-35796,60857, 8225,60857, 8242,60857,  128,60857, 7971,61214,  101,60857,
- 7971,61218,37362,60857,48122,60857,12526,60857, 6698,60857,47690,60857,
-38704,60857,11943,60857,    9,61235,12343,60857,    5,61239,    4,61238,
-61241,61243,    4,61239,    5,61238,61247,61249,40132,60857,  331,61253,
-   59,61253,   97,61253, 1325,61253, 8148,60857,48753,61263,10081,61263,
-11759,61263,39044,60857,  331,61271, 1325,61271,  571,61271,   59,61271,
-42338,60857,48753,61281,44451,61281,10081,61281,42959,60857,48753,61289,
-44451,61289,42825,61289,10081,61289,  629,60857,56555,61298,38305,61298,
-  289,60857,  587,61305,10287,60857,17660,60857,10262,60857,40130,60857,
-  331,61315,   59,61315, 1325,61315,53780,60857,48753,61323,10081,61323,
-60668,60857,    9,61329, 8213,60857,    9,61332,11813,60857,    9,61337,
-17030,60857, 8211,60857, 8301,60857, 8209,60857,38110,60857, 8052,60857,
-    9,61350,10464,60857,    9,61355,10527,60857,    9,61359, 4727,60857,
-    9,61363,11989,60857,   11,61367,    5,61368,    6,61367,    5,61372,
-    5,61367,    6,61376,    6,61377,    7,61367,61381,61383,   15,61367,
-    6,61366,61387,61389,   14,61367,    7,61366,61379,61395,61375,61395,
-61371,61395,61393,61395,12371,60857,    5,61405,    4,61405,   12,61405,
-   13,61404,61411,61413,   13,61405,   12,61404,61417,61419,    5,61404,
-61409,61423,    4,61404,61407,61427, 6625,60857,44243,61430,  375,61430,
-   75,61430,    9,61431, 6685,60857,  483,61440,46863,61440,17060,60857,
-35768,60857,50524,60857,52806,60857,50480,60857,36296,60857,50990,60857,
-  510,60857,56555,61460,47608,60857,36293,60857,  483,61466,  295,60857,
-49713,61470, 1291,60857,61009,61475,61013,61475,20033,61475, 1831,61475,
- 1881,61475,19319,61475,    4,61475,19317,61489,15899,61475, 4579,61475,
-48561,60857,    9,61497,  922,60857,56555,61500,51937,60857,  375,61504,
-57915,60857,57859,61508,    9,61511,39234,60857,60853,61515,60609,61515,
- 9525,61515,42103,61515, 9517,61515,41989,61515,39485,61515,39481,61515,
-57855,61515, 9519,61515,41995,61515,39487,61515,   15,61515, 9513,61541,
-41941,61541,39477,61541,50958,60857,    9,61548,35761,60857,    9,61552,
-35719,60857,  375,61557,57482,60857,57852,61561,57811,61561,    9,61564,
-    9,61561,57811,61568,57522,60857,  483,61572,46863,61572, 1072,60857,
- 1108,60857,49713,61580,  524,60857,    4,61585,19301,61587,19311,61585,
- 3195,61585, 1965,61585,15899,61585, 4579,61585,40704,60857,    7,61601,
-40799,61603,40813,61601, 7961,61601, 7951,61601, 7953,61601,35893,61601,
-37897,61601,38299,61601, 1275,61601, 7947,61621,52756,60857, 1011,61624,
-10245,60857,37339,60857,   33,60857,10385,61632,    9,61635, 7971,60857,
-  101,61638,  128,61638,    9,61638,  113,61644,  483,61638,48753,61649,
-10081,61649,11759,61649,  113,61638,    9,61656,   21,60857,38305,61660,
-  331,61663,   59,61663,   97,61663, 1325,61663,47640,60857,56555,61672,
-17635,60857,12377,61676,11731,60857,13737,61680,  567,60857,46863,61685,
-55211,60857,44243,60857, 6625,61690,42383,61690,58116,61690,42155,61690,
-56555,61698,56555,61690,42155,61702, 1505,60857,38057,61706,  288,60857,
-46863,61711,48466,60857,56555,61714,   11,60857,  340,61719,  341,61719,
-  264,61718,61721,61725,    7,61719,  265,61728,61725,61731,  265,61729,
-  264,61719,61735,61737,56555,61719,57859,61741,    9,61743,  483,61718,
- 4579,61747,15899,61747, 3195,61747, 1965,61747,  265,61719,    7,61756,
-61725,61759,56555,61718,57852,61763,57811,61763,    9,61766,    9,61763,
-57811,61770,  265,61718,61723,61775,46863,61775,    9,60857, 8213,61780,
- 8052,61780, 7971,61780,  113,61786,36527,61780,58782,61780,58362,61780,
- 8241,61780,  113,61780, 7971,61798,35761,61780,50958,61780,  483,61780,
-56555,61806, 1011,61780,49713,61810,38305,61780,38299,61815,37897,61815,
- 7961,61815, 7951,61815,35893,61815, 7953,61815, 1275,61815, 7947,61829,
-49713,61780, 1011,61832,56555,61780,46863,61836,  483,61836,46863,61780,
-56555,61842, 7563,60857, 1275,61847, 7565,61849, 7569,61849, 7573,61849,
- 7065,60857,35187,61857,10089,60857,   16,61861,   16,61860,   17,61861,
-61865,61867,   17,61860,61863,61871,10257,60857,  903,61874, 8241,60857,
-    9,61878, 3255,60857,    9,61883,48789,60857,   16,61887,   16,61886,
-   17,61887,61891,61893,   17,61886,61889,61897,37357,60857,  903,61900,
- 3499,60857,    9,61905, 3445,60857,    9,61909,38184,60857,  375,61913,
-16722,60857,16543,61917,16679,61917,16537,61917,35187,61916,13922,60857,
-13753,61927, 4805,60857,  375,61930,16683,60857,16565,61934,  375,61934,
- 6515,60857,    9,61941,59824,60857,60369,61945,    9,61945, 9520,60857,
-    9,61951,16711,60857,16659,61954,    8,60856,    3,61959,    6,61960,
-61601,61963,61815,61963,    6,61959,    3,61968,61601,61971,61815,61971,
-61829,61959,61621,61959, 1274,61959,61815,61981,61601,61981,   16,60856,
-   10,60856,    5,61989,    0,61990,61585,61993,61747,61993,    0,61989,
-    5,61998,61585,62001,61747,62001,57811,61989,59933,61989,59743,61989,
- 8093,61989, 3837,61989,39619,61989,51421,61989,53703,61989,42435,61989,
- 4287,61989, 4303,61989,53487,61989,42113,61989, 9839,61989, 9579,61989,
-    9,61989,  113,62036,  128,61989,  101,61989,  113,61989,    9,62044,
-57859,60857,57915,62048,    9,62051,    9,62049,57915,62055,   11,60856,
-  483,62059,    9,60856,57889,62063, 5185,62063,11243,62063,12557,62063,
-11251,62063, 5177,62063,   16,60857,57293,62077,35603,62077,58669,62077,
-59079,62077,55005,62077,   17,60856,61685,62089,  483,62089,   15,60856,
-40829,62095,   10,60857,21183,62099,  759,62099,   47,62099,  959,62099,
-  203,62099,  107,62099,   85,62099,   67,62099,    9,62115,  113,60857,
- 8150,62118,17727,62118,13737,62118,    9,62118, 7971,62126,17025,62118,
- 7971,62118,    9,62132,10385,60857,    9,62137,   33,62139,   33,62136,
-    9,62143,  165,60857,17049,62146,17025,60857, 1275,62151, 7947,62153,
-48739,62153,17637,62153,17029,62153,37241,62153,  113,62150,17049,60857,
-  165,62166,10247,60857,37347,60857,10249,60857,16659,60857,16711,62176,
-37408,60857,56555,62180,16531,62180,  340,60857,51803,62187,  331,62187,
- 1325,62187,   59,62187,52439,60857,56555,62196,52563,60857,  265,62201,
- 1413,60857,56555,62204,  256,60857,56555,62208,38305,62208,  566,60857,
-61987,62215, 9377,62215,37325,62215,10219,62215,  959,62215,   47,62215,
-  759,62215,  587,62215,20763,62215,42810,60857,43073,62235,42827,62235,
-58703,62235,60849,62235,58027,62235,42821,62235, 1325,62235,   59,62235,
-  331,62235,  265,62235,42613,62235,56555,62257,  241,62234,  580,60857,
-20033,62263,59143,62263,60601,62263,58029,62263,55210,60857,31103,62273,
-37375,60857, 1347,60857,37409,60857,  375,62280,  375,60857,58905,62284,
-16683,62284, 4805,62284,58126,62284, 6625,62284, 2079,62284,51937,62284,
-  305,62284,56555,62300,56555,62284,  305,62304,37409,62284,  803,60857,
-37608,60857,  305,60857,60205,62314,57470,62314,  375,62314,56555,62320,
-56555,62314,  375,62324,58116,60857,44243,62328,58126,60857,  375,62332,
-42155,60857,58056,62336,44243,62336,56555,62340,  483,62336,48753,62345,
-44451,62345,10081,62345,56555,62336,44243,62352,53517,60857,  483,62356,
-48753,62359,10081,62359,  251,60857,38305,62364,  331,62367, 1325,62367,
-   59,62367,  555,60857,38305,62374,  331,62377, 1325,62377,  571,62377,
-   59,62377,60612,60857,    7,62387,36273,60857,    7,62391,59787,60857,
-60619,62394,    9,62397,    5,62394,60369,62401,    9,62401,    5,62395,
-60327,62407,60719,62407,57901,62407,   17,62407,59381,60857,60455,62416,
-    7,62419, 9513,60857,    5,62423,   17,62425,    5,62422,    9,62429,
-58362,60857,  903,62432,    9,62432,58348,60857,    7,62438,58782,60857,
-  903,62442,    9,62442,58396,60857,    7,62448,58742,60857,    9,62453,
-  483,62452,46863,62452,60763,60857,    7,62461,  903,60857,58782,62464,
-58362,62464,37357,62464,10257,62464,  483,62464,56555,62474,46863,62464,
-56555,62478,56555,62464,    9,62483,46863,62482,  483,62482,38057,62464,
-    7,62491,  265,60857,46863,62495,   11,62497,   11,62494,46863,62501,
-    7,62494,51803,62505,  331,62505, 1325,62505,   59,62505,    7,62495,
-  375,62515,35187,60857,59960,62518,16722,62518,    7,62518,56555,62524,
-16531,62524,56555,62518,    7,62530,16531,62518,    7,62534,46863,60857,
-36527,62538,58742,62538,57522,62538,12377,62538, 6685,62538, 1011,62538,
-  903,62538,56555,62552,    9,62538,56555,62556,56555,62538,  903,62560,
-    9,62560,36527,60857,    7,62567,  331,62569,    9,62566,46863,62566,
-  483,62566,    7,62566,  375,62579,38305,60857,42109,62582,42103,62585,
- 1205,62583, 1203,62589, 1007,62583, 1009,62593, 1203,62582, 1205,62597,
- 1009,62582, 1007,62601,  177,62582,   59,62605, 1365,62582, 1325,62609,
-  571,62583,  555,62613,   97,62583,   21,62617,    5,62582,    6,62621,
-    5,62622,62583,62625,    2,62622,62627,62629,    2,62621,    6,62632,
-  482,62621,    3,62582,    6,62639,    3,62640,62583,62643,    4,62640,
-62645,62647,    4,62639,    6,62650,    8,62639,   14,62582,    6,62657,
-    2,62658,    2,62657,    6,62662,  482,62657, 1274,62582,    6,62669,
-    4,62670,    4,62669,    6,62674,    8,62669,  256,62582,  629,62582,
-  555,62582,   59,62685,  331,62685, 1325,62685,  571,62685,   21,62582,
- 1325,62695,  331,62695,   59,62695,   97,62695, 1325,62583, 1365,62705,
-  251,62705,   21,62705,  555,62705,   59,62583,  177,62715,  251,62715,
-  555,62715,   21,62715,  251,62582,  331,62725,   59,62725, 1325,62725,
-  331,62583,  251,62733,  555,62733,   21,62733,   15,62583,10085,62741,
-10093,62741,62661,62741,62665,62741,40909,62741,62629,62741,62635,62741,
-    3,62741,10087,62741,62637,62741,62667,62741,  483,62741,10081,62765,
-62621,62765,62657,62765, 1275,62583,10005,62773,10041,62773,62673,62773,
-62677,62773,62647,62773,62653,62773,    5,62773,10009,62773,23879,62773,
-31937,62773,30399,62773,62655,62773,62679,62773,    9,62773,10001,62801,
-62639,62801,62669,62801,  483,62582,39485,62809,39481,62809, 9525,62809,
- 9517,62809,    4,62809,62773,62819,62787,62809,42103,62809,41989,62809,
- 9519,62809,41995,62809,57855,62809,60853,62809,60609,62809,39487,62809,
-   15,62809, 9513,62841,41941,62841,39477,62841,    9,62582,61971,62849,
-61963,62849, 7961,62849, 7951,62849,    2,62849,62741,62859,62757,62849,
- 7953,62849,35893,62849,38299,62849,37897,62849,61981,62849, 1275,62849,
- 7947,62875,61959,62875,    6,62582,    7,62582,58703,62883,58027,62883,
-60849,62883,   59,62883, 1325,62883,  331,62883,  265,62883,42613,62883,
-56555,62899,  241,62882,    7,62583,58715,62905,58056,62905,40799,62905,
-  375,62905,56555,62905,44243,62914,44243,62905,56555,62918,  265,62583,
-  375,62923,62881,62923,  241,62582,    6,62928,    7,62928,    6,62929,
-62933,62935,    7,62929,62931,62939, 1011,60857,52756,62942,46863,62942,
-  483,62942,    9,62942,49713,62950,49713,62942,    9,62954,    7,62943,
-10107,62959,53813,62959,49713,60857,22807,62965, 1108,62964,  295,62964,
-    9,62964, 1011,62972, 1011,62964,    9,62976,    4,62964,31103,62981,
-  241,60857,59960,62984,42810,62984,    7,62984,56555,62990,38305,62990,
-56555,62984,    7,62996,38305,62984,    6,63000,    7,63000,    6,63001,
-63005,63007,    7,63001,63003,63011,  483,60857, 9527,63014, 9525,63017,
-17053,63014,10081,63021,11759,63015, 7971,63025,44451,63015,42155,63029,
-    0,63014,    5,63033,    0,63034,63015,63037,    7,63034,63039,63041,
-    7,63033,    5,63044,   10,63033,    6,63014,    5,63051,    6,63052,
-63015,63055,    1,63052,63057,63059,    1,63051,    5,63062,38304,63051,
-   14,63014,    5,63069,    1,63070,    1,63069,    5,63074,38304,63069,
-36527,63014,58742,63014,57522,63014,12377,63014, 6685,63014, 7971,63014,
-48753,63091,10081,63091,11759,63091,42155,63014,10081,63099,48753,63099,
-44451,63099,10081,63015,17053,63107,53517,63107,42155,63107, 7971,63107,
-53517,63014,48753,63117,10081,63117,48753,63015,53517,63123, 7971,63123,
-42155,63123,36293,63014,   17,63015,   11,63015,    9,63014,56555,63136,
-   15,63015, 1995,63141, 3755,63141,63073,63141,63077,63141, 5303,63141,
-63059,63141,63065,63141,    0,63141,38403,63141,39943,63141, 4917,63141,
-17013,63141,63067,63141,63079,63141,38305,63141,   59,63171,63051,63171,
-63069,63171,  903,63014,56555,63178, 1011,63014,   11,63014,61993,63185,
-62001,63185, 3195,63185, 1965,63185,    1,63185,63141,63195,63157,63185,
- 4579,63185,15899,63185,38305,63014,39481,63205,39485,63205,42103,63205,
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-54643,68191,49529,68176,49537,68195,16091,68176, 9513,68199,60125,68176,
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-    2,68215,    1,68216,68177,68219,    7,68216,68221,68223,    7,68215,
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- 9513,68275,59787,68275,21529,68275, 9875,68176,59787,68283, 9513,68283,
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-16091,68299,20501,68299, 9875,68299,  483,68177, 2007,68307, 3477,68307,
-68267,68307,68271,68307, 5197,68307,68241,68307,68247,68307,    1,68307,
-19051,68307,19667,68307, 5123,68307,12345,68307,68249,68307,68273,68307,
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-10093,68381,10085,68381,20285,68381,10087,68381,19555,68381,  483,68381,
-20273,68407,10081,68407,19545,68407, 1369,68176,67281,68415,67273,68415,
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-57911,68415, 4897,68415,17041,68415,67291,68415,56555,68415, 1471,68441,
-67269,68441,    3,68176,40909,68447,    3,68177,40895,68451,40059,68451,
-43749,68451,38903,68451,18967,65869,20347,68460,20345,68463, 1203,68461,
- 1205,68467, 1009,68461, 1007,68471, 1205,68460, 1203,68475, 1007,68460,
- 1009,68479,   97,68460,   21,68483,  571,68460,  555,68487,  177,68461,
-   59,68491, 1365,68461, 1325,68495,    2,68460,    6,68499,    2,68500,
-68461,68503,    5,68500,68505,68507,    5,68499,    6,68510,   14,68499,
-    4,68460,    6,68517,    4,68518,68461,68521,    3,68518,68523,68525,
-    3,68517,    6,68528, 1274,68517,  482,68460,    6,68535,    5,68536,
-    5,68535,    6,68540,   14,68535,    8,68460,    6,68547,    3,68548,
-    3,68547,    6,68552, 1274,68547,  256,68461,  629,68461, 1325,68460,
-   21,68563,  251,68563,  555,68563, 1365,68563,   59,68460,  555,68573,
-  251,68573,   21,68573,  177,68573,  555,68461,  571,68583,  331,68583,
-   59,68583, 1325,68583,   21,68461,   97,68593,  331,68593, 1325,68593,
-   59,68593,  331,68460,  251,68603,  555,68603,   21,68603,  251,68461,
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-68551,68619,68555,68619,68451,68619,68525,68619,68531,68619,    2,68619,
- 7953,68619,35893,68619,38299,68619,37897,68619,68533,68619,68557,68619,
- 1275,68619, 7947,68649,68517,68649,68547,68649,  483,68461, 9517,68657,
- 9525,68657,68539,68657,68543,68657,20033,68657,68507,68657,68513,68657,
-    4,68657, 9519,68657,57855,68657,60853,68657,60609,68657,68515,68657,
-68545,68657,   15,68657, 9513,68687,68499,68687,68535,68687, 1275,68460,
-67245,68695,67253,68695,10041,68695,10005,68695,    5,68695,68657,68705,
-68673,68695,10009,68695,23879,68695,31937,68695,30399,68695,67263,68695,
-    9,68695,10001,68721,67241,68721,   15,68460,19549,68727,19553,68727,
-10093,68727,10085,68727,    3,68727,68619,68737,68635,68727,20345,68727,
-20281,68727,10087,68727,20285,68727,19555,68727,  483,68727,10081,68753,
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-58703,68767,58027,68767,60849,68767,68345,68767,35603,68767,   59,68767,
- 1325,68767,  331,68767,  265,68767,  241,68766,  241,68461,    6,68789,
-    7,68789,    6,68788,68793,68795,    7,68788,68791,68799,  265,68460,
-  375,68803, 1011,65869,59960,68807,61780,68806,63014,68806,62538,68806,
-17455,68806,47640,68806, 5843,68806,48534,68806,  483,68806,60857,68824,
-    9,68806,60857,68828,46863,68806,60857,68832,  903,68832,   11,68833,
-  587,68832,  587,68806,46863,68842,   11,68807,46863,68847,    7,68807,
-56555,68850,63823,68851, 9377,68851,  903,68806,46863,68858,56555,68807,
-    6,68863,    7,68863,    6,68862,68867,68869,    7,68862,68865,68873,
-60857,68806,    7,68877,  483,68876,46863,68876,    9,68876,62942,65869,
-    7,68887,46863,68886,    9,68886,  483,68886,60857,65869,58782,68896,
-58362,68896,47608,68896, 1108,68896, 1072,68896,  165,68896,  524,68896,
- 1291,68896,   11,68897,  483,68915,    9,68896, 1011,68918,  587,68897,
-  483,68923,46863,68896,56555,68926, 1011,68926,  483,68896,56555,68932,
-  587,68933,   11,68933, 1011,68932,   11,68932,   11,68896,  483,68944,
-    7,68897, 1141,68949, 1447,68949,   33,68949,56555,68896,    9,68957,
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-68991,68993,60797,68975,60796,68974,68999,69001,60796,68975,60797,68974,
-69005,69007,    3,68975,44242,69011,44242,69010,68993,69015,    6,69010,
- 1274,68975,44243,68975,69013,69023,45087,68975,68979,69027,16711,68975,
-68977,69031, 1275,68975, 4899,69035,14611,69035,47961,69035,   11,68974,
-    9,69043,46863,68974,69019,69047,69021,69047,    9,68975,   11,69053,
-    6,68974,    0,69056,69035,69059,    7,68974,25793,69063,41019,69063,
- 8717,69063, 8495,69063, 3785,69063,    6,68975,    3,69074,69047,69077,
-    7,68975, 8647,69081,21605,68975,  375,69085,18967,68974,  375,69089,
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-25381,69092,  265,69092,    9,69107,60857,69092,  483,69110,  483,69092,
-60857,69114, 1275,69092,    9,69119,    2,69092,44243,69123,    3,69092,
-   33,69127,46863,69129,46863,69126,   33,69133,    3,69093,49283,69137,
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-    3,69150,   33,69153,    3,69151,  113,69157,20034,65869,  375,69161,
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-    7,69183,  241,69188,  241,69183,    7,69192,15029,65869,56555,69196,
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-69247,69259,69251,69259,    2,69243,    7,69264,69259,69267,    3,69243,
-69249,69271,    2,65868,41692,69275,41607,69275, 8672,69275, 8743,69275,
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- 8717,69343, 8916,69275,31103,69275,    9,69348,26292,69275,26331,69353,
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-    6,69558,66665,69561,66785,69561,66997,69561,68695,69561, 9599,69513,
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- 8251,69729,44243,69513,41941,69754,46863,69513,  483,69758,   15,69513,
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- 7947,69977,37241,69977, 8306,69877,   33,69877,56555,69987, 1447,69877,
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-70053,70055,    7,70046,68176,70067,70055,70069,   15,70067,65869,70072,
-70055,70075,65869,70067,   15,70078,70055,70081,    3,69877, 8241,70085,
-   15,70084,  483,70089,  331,69877, 1369,70092,    3,69876,24265,70097,
-28233,70097,29077,70097,19559,70097,20713,70097, 4283,70097,20361,70097,
- 9673,70097, 4279,70097, 9967,70097, 8251,70097, 3807,70097,18967,69877,
- 1275,70122,48739,70125,37241,70125, 7947,70125,  113,70123, 1011,69877,
-  265,69877,20501,70136, 8165,70136, 9875,70136,46863,69877,38056,70144,
-38056,70145,38057,70144,70149,70151,38057,70145,70147,70155,   15,69877,
-    3,70159, 1369,70161,    3,70158,  483,70165,54027,69877,  483,70169,
- 8165,69877,  265,70172,    7,65869,69874,70176,69875,70177,70179,70181,
-69875,70176,69874,70177,70185,70187,69852,70176,69853,70177,70191,70193,
-69853,70176,69852,70177,70197,70199,11276,70176,11277,70176,11276,70177,
-70205,70207, 5044,70176, 5045,70176, 5044,70177,70213,70215,40583,70177,
-40583,70176,40582,70176,70219,70223,40582,70177,70221,70227,24094,70177,
-69871,70177,69870,70177,21604,70177,69849,70236,    9,70236,21604,70176,
-70233,70243,69849,70243,    9,70243,    4,70177,    0,70250,    1,70177,
-  264,70254,  264,70255,24095,70177,70243,70261,45149,70177,26498,70177,
-41326,70177, 8796,70177,27533,70177,    9,70273,25793,70177,27021,70277,
-  587,70276,  241,70277, 5045,70177,70211,70285,11277,70177,70203,70289,
- 4551,70177,10001,70177,    9,70295, 8495,70177,  305,70299,  587,70298,
-  241,70299,   88,70177, 1369,70307,  587,70177,25793,70310,41019,70310,
- 8495,70310, 1369,70177,20103,70319,36773,70319, 8337,70319,  265,70177,
-70259,70327,63493,70327, 8861,70327,46863,70327,   89,70177,46863,70337,
-  483,70177,18967,70341,37241,70343,48739,70343,70253,70343, 7947,70343,
- 1275,70177,44243,70353,21605,70176,70231,70357,70235,70357,70239,70357,
-70241,70357,70237,70357,69849,70367,    9,70367,26331,70357,23755,70357,
-27805,70357,  241,70176,25793,70379,59875,70379,41019,70379, 8495,70379,
- 9805,70379,53391,70379,  903,70176,25793,70393, 8495,70393,41019,70393,
-18967,70176,58715,70401,  375,70401,  265,70176,70257,70407,25793,70407,
-41019,70407, 8717,70407, 8495,70407, 3785,70407,21605,70177,70246,70421,
-69849,70421,70243,70424,70248,70421,70243,70421,69849,70430,    9,70430,
-24545,70421,    9,70421,70243,70438,  903,70421,  241,70177,51487,70445,
-  375,70177, 1369,70449,41019,70177,  587,70452,  241,70453,    2,70176,
-48009,70459,  265,70459,46863,70463,49321,70459,49001,70459,    3,70176,
-58056,70471,58601,70471,40799,70471,44243,70471,56555,70478,35927,70471,
-  375,70471,  510,70471,  483,70471,    9,70488,38155,70471,37611,70471,
-56555,70471,44243,70496,    9,70471,  483,70500,    2,70177,44243,70505,
-48466,70505,47640,70505,46863,70505,    9,70512,  903,70512,  903,70505,
-46863,70518,    9,70505,46863,70522,49155,70505,    3,70177, 1369,70529,
-    9,70531,37663,70529,    9,70528, 1369,70537,18967,70529,44243,70541,
-69849,70177,21604,70545,70421,70547,21604,70544,70357,70551,    9,70177,
-21604,70555,70421,70557,21604,70554,70357,70561,    3,70554, 1369,70565,
-    3,70555,  483,70569,    3,65869,60078,70572,60079,70572,13748,70573,
-13736,70572,70579,70581,13736,70573,13737,70572,13749,70573,70587,70589,
-    1,70573,    5,70592,    1,70572,69385,70597,69384,70597,69275,70597,
-    7,70602,    7,70603,59961,70597,    6,70596,70601,70611,70605,70611,
-    7,70596,70599,70617,69275,70617,    6,70597,69275,70623,70617,70624,
-70607,70623,70620,70623,70617,70623,69275,70632,56555,70623,    7,70597,
-69275,70638,70611,70641,70611,70639,69275,70645,48560,70572,   33,70649,
-60230,70573,57986,70573,58352,70573, 8309,70573,13737,70573,    7,70660,
-70581,70663,59960,70573,70575,70667,70611,70667,  241,70666,  256,70573,
-56555,70674,   11,70573,48583,70679,48328,70679,   25,70679,46863,70684,
-46863,70679,   25,70688,59961,70573,70577,70693,  483,70573,   15,70697,
-41941,70699, 9565,70699,70595,70699,59619,70699, 1369,70573,46863,70709,
-37409,70573,46863,70713,46863,70572,   11,70716,   33,70719, 1369,70717,
-   11,70717,   25,70725,37409,70717,   15,70572,40909,70731,   11,70572,
-   33,70735,46863,70737,46863,70734,   33,70741,    6,70572,    1,70744,
-70667,70747,    5,70744,    7,70572,70609,70753,58056,70753,70636,70753,
-70623,70753,56555,70760,40799,70753,58601,70753,44243,70753,56555,70768,
-35927,70753,  375,70753,  510,70753,  483,70753,    9,70778,38155,70753,
-37611,70753,    9,70753,  483,70786,56555,70753,70623,70790,44243,70790,
-    6,70573,70731,70797,56555,70797,    7,70573,13737,70802,70581,70805,
-13737,70803,70585,70809,70611,70803,56555,70813,70747,70803,56555,70817,
-70751,70803,42613,70803,56555,70823,54497,70803,54159,70803,51803,70803,
-58348,70802,10291,70803,56555,70835,   59,70803, 1325,70803,  331,70803,
- 1275,70803,    9,70845,56555,70802,70611,70849,70747,70849,  241,70848,
-  241,70802,56555,70856,   15,70803,  483,70861,69275,70573,58348,70573,
-    7,70866,38057,70573,    7,70871,43503,70573,44243,70875,56555,70573,
-  256,70878,    7,70878,70611,70883,70747,70883,  241,70882,    7,70879,
-70623,70891,  241,70878,    7,70894,  241,70573,44242,70899,44242,70898,
-44243,70899,70903,70905,59960,70898,44243,70898,70901,70911,    7,70898,
-56555,70914,56555,70898,    7,70918,    2,65869,    1,70922,69635,70925,
-  668,70925,69513,70929,69627,70925, 1419,70925,69513,70935,70699,70925,
-69659,70925,69773,70925,  587,70925,    9,70944,69513,70947,    9,70925,
-  587,70950,69513,70953,54027,70922,54159,70957,46863,70959,54027,70923,
-54154,70963,46863,70963,54129,70966,54129,70963,46863,70970,44243,70923,
-   11,70975,46863,70922,   11,70922,44243,70981,    6,70922,    0,70985,
-    5,70986,    5,70985,    0,70991,    0,70990,    1,70984,70995,70997,
-70989,70997,70987,70997,    5,71003,    1,70985,70993,71007,    5,71007,
-    0,70984,    5,71013,71007,71014,71010,71013,71007,71013,    5,71020,
-  903,70985,    1,71025,    0,71025,    1,71024,71029,71031,    0,71024,
-71027,71035,    7,70922,48009,71039,  265,71039,46863,71043,49321,71039,
-49001,71039,    7,70923,70989,71051,70997,71052,70995,71051,70997,71056,
-70998,71051,71000,71051,71005,71051,71009,71051,71017,71051,71019,71051,
-71023,71051,71011,71051,71013,71075,14219,71051,14013,71051,14267,71051,
-16151,71051,70997,71051,70995,71086,70989,71086,56554,71051,    1,71051,
-    2,71094,    2,71051,    1,71098,14211,71051, 9165,71103,    9,71051,
-65869,71107,71093,71109,71097,71109,71101,71109,70985,71051,69513,70923,
-  903,70923,46862,71120,46862,71121,46863,71121,71123,71127,46863,71120,
-71125,71131,    6,65869,    1,71134,70803,71137,56555,71139,    4,71134,
-69977,71143,58930,71143,69877,71147,69969,71143,19917,71143,69877,71153,
-70343,71143,70035,71143,70125,71143,  587,71143,56555,71162,69877,71165,
-56555,71143,  587,71168,69877,71171,    2,71134,  903,71175,    1,71177,
-    0,71177,    1,71176,71181,71183,    0,71176,71179,71187,    2,71135,
-  265,71191,    0,71192,    1,71192,    0,71193,71197,71199,    1,71193,
-71195,71203,    3,71135,    8,71207,    4,71207,    6,71210,    6,71207,
-    4,71214,56555,71207,65869,71219,71209,71221,71213,71221,71217,71221,
-    0,    5,59619,71229,59961,71230,60166,71229, 1207,71228,19105,71237,
- 1180,71228,19119,71241,60158,71228,60180,71228,60178,71228,60318,71228,
-60167,71229, 1197,71228,59875,71255,53391,71255, 9805,71255,60159,71228,
-60181,71228,60179,71228,38158,71229,44195,71269, 1196,71228,60319,71228,
-28739,71229,    2,71277,29229,71279,   59,71228,60221,71283,63823,71228,
-61747,71287,61585,71287,61475,71287,63185,71287,   39,71228,56555,71297,
-   15,71299,    6,71298,71301,71303,   14,71299,    7,71298,71307,71309,
- 1163,71228,19119,71313,   25,71228,61747,71317,63185,71317,25461,71317,
-61585,71317,70985,71228,71086,71327,70997,71327,71051,71330,71051,71327,
-70997,71334,38057,71229,    6,71338,44195,71341,60973,71229, 1179,71345,
-49213,71229,49217,71349,54619,71229,   11,71353,54655,71355, 1003,71229,
-60857,71359, 1007,71361,11995,71228,12025,71365,64569,71228,64587,71369,
-61989,71228,61747,71373,63185,71373,61585,71373, 8065,71229,   11,71381,
- 8067,71383,63777,71229,60857,71387,63779,71389,21918,71229,  987,71393,
-54336,71229,54339,71397,  989,71229,21605,71400,  987,71403,21890,71229,
- 1179,71407,49262,71229,49217,71411,54331,71229,   17,71414,54339,71417,
-25395,71228,25461,71421, 1293,71228,61475,71425,25433,71228,25461,71429,
-61005,71228,61475,71433,63014,71228,    5,71437,    7,71438,    7,71437,
-    5,71442,   10,71437,  524,71228,    0,71449,    3,71450,    3,71449,
-    0,71454,60856,71449,21904,71229,   25,71461,  809,71229,21605,71464,
-  713,71467,13755,71229,   17,71470, 9377,71473,65054,71229,63823,71477,
-  117,71229,21605,71480,   25,71483,21916,71229,  713,71487,13764,71229,
- 9377,71491,65037,71229,   17,71494,63823,71497, 1177,71229,21605,71500,
- 1179,71503,49229,71229,   17,71506,49217,71509,26867,71229,21605,71512,
-26865,71515,10161,71229,   17,71518,10159,71521,26868,71229,26865,71525,
-10162,71229,10159,71529, 1180,71229, 2975,71533, 1903,71533,19025,71533,
-33464,71229,34655,71541,34447,71541,33221,71541,33773,71541, 1207,71229,
-19027,71551, 3567,71551, 1973,71551, 3041,71551, 1921,71551,19049,71551,
- 9824,71229,71273,71565,53462,71229,71273,71569,59900,71229,71273,71573,
-60319,71229,71251,71577,60159,71229,71245,71581,60178,71229,71267,71585,
-59901,71229,71255,71589,60158,71229,71263,71593,60180,71229,71265,71597,
-25461,71229,   25,71601,25395,71601,25433,71601,61475,71229,63823,71609,
- 1293,71609,61005,71609,65808,71229,65513,71617,65791,71617,65407,71617,
-65171,71617,60835,71229,60318,71229,71275,71629, 9617,71629,19797,71229,
-  375,71635,20735,71229,47386,71229,20040,71229,20050,71229,61747,71229,
-63823,71647,   25,71647,61989,71647,63185,71229,   25,71655,63823,71655,
-61989,71655,61585,71229,63823,71663,   25,71663,61989,71663,20056,71229,
-  375,71671, 9825,71229,71255,71675,53463,71229,71255,71679,57562,71229,
-58846,71229,58372,71229,58758,71229,58762,71229,57224,71229,57284,71229,
-57278,71229,58760,71229,20686,71229,24738,71229,  305,71703,  713,71703,
- 1489,71703,   25,71703,10074,71229, 9377,71713,17573,71713,63823,71713,
-22766,71229,  305,71721,   25,71721,  147,71721,  713,71721,27672,71229,
-63823,71731,27995,71731, 9377,71731,62147,71229,   25,71739,  305,71739,
-  147,71739,  169,71739,  713,71739,31881,71229,63823,71751,27995,71751,
-31359,71751, 9377,71751,60221,71229,   59,71761,  653,71229,   11,71765,
- 9993,71229,17542,71229, 9936,71229,24734,71229,  305,71775,  713,71775,
-   25,71775,60834,71229,21350,71229,16129,71229,    3,71787,    2,71787,
-  842,71787,  843,71786,71793,71795,  843,71787,  842,71786,71799,71801,
-    3,71786,71791,71805,    2,71786,71789,71809,16966,71229,19480,71229,
-50522,71229,52740,71229,57380,71229,59108,71229,50478,71229,57252,71229,
-19986,71229,51036,71229,57576,71229,58112,71229,58362,71229,  903,71836,
-47640,71229,56555,71840,60179,71229,71249,71845,60181,71229,71247,71849,
-63015,71229,71441,71853,71445,71853,62905,71853,63041,71853,63047,71853,
-63215,71853,    6,71853,63205,71867,19687,71853,21127,71853,20843,71853,
-63049,71853,71447,71853,   11,71853,63033,71881,71437,71881,19917,71229,
-    9,71886,  525,71229,71453,71891,71457,71891,36729,71891, 1851,71891,
- 1885,71891,35635,71891,    2,71891,35633,71905,62095,71891,17711,71891,
- 4907,71891,61003,71891,71459,71891,60857,71891,  531,71919,71449,71919,
- 1413,71229,  331,71925,49713,71924, 1419,71229,56555,71930,58782,71229,
-  903,71934,  296,71229, 8861,71939, 1106,71229,18967,71943, 9617,71943,
-24095,71229,46863,71949,57522,71229,   11,71953,  903,71952,  587,71952,
-51004,71229,  483,71960,22956,71229,70471,71965,70753,71965,10159,71965,
-26865,71965,10111,71965,26715,71965,23709,71965,23713,71965,67425,71965,
-10113,71965,26719,71965,23715,71965,  587,71965,10107,71991,26625,71991,
-23651,71991,19475,71229,  483,71998,  918,71229,56555,72002,  922,71229,
-56555,72006,49713,72006,  668,71229,56555,72012, 1290,71229,    2,72017,
-35575,72019,35585,72017, 3621,72017, 1991,72017,60969,72017,62095,72017,
-17711,72017, 4907,72017,60857,72017, 1325,72037,58930,71229,    9,72040,
-52692,71229,  903,72044,25380,71229,    6,72049,38881,72051,38891,72049,
- 9927,72049, 9891,72049, 9895,72049,19687,72049,21127,72049,20843,72049,
-   11,72049, 9875,72069, 1447,71229,15705,72073, 9917,71229,20615,71229,
-  759,71229,17455,72081, 9195,71229, 1487,72085, 1471,71229,21605,72088,
-  305,72091,  713,72091, 1489,72091,   25,72091, 9805,71229, 1197,72101,
- 1275,72101,    9,72105, 1197,72100,71273,72109,10001,71229,   17,72112,
- 9377,72115,17573,72115,63823,72115,17455,71229,12377,72122,59961,71229,
-59619,72126, 1011,72126, 9617,72131, 1011,72127, 9565,72135,59619,72135,
-   89,71229,17455,72141,60797,71229,59381,72144,  165,71229,21315,72148,
-  587,71229,66971,72153,17455,72153,57522,72152,    9,72152,56555,72160,
-56555,72152,    9,72164,60857,72153,    9,72169, 1369,71229,39085,72173,
-21605,72172,20843,72177,21127,72177, 9927,72177, 9891,72177,19687,72177,
- 9895,72177,   11,72177, 9875,72191, 1275,71229,   17,72194, 4907,72197,
-17711,72197, 3621,72197, 1991,72197,62095,72197,60969,72197,60857,72197,
- 1325,72211,  483,71229,20035,72214,58742,72214,19475,72214,51004,72214,
-56555,72214,  903,72224,  903,72214,56555,72228,49713,72228,49713,72214,
-  903,72234,55839,71229,46863,72239,65061,71229,60857,72243,65063,72245,
-65067,72245,65071,72245, 7065,71229,18967,72253, 6789,71229,   11,72257,
- 6843,72259, 6885,72259, 6889,72259,11277,71229,46863,72267, 9935,71229,
- 1011,72270,20645,71229, 1011,72274, 3445,71229,  375,72279, 5045,71229,
-46863,72283,17104,71229,48643,72287,12614,71229,  375,72291,69872,71229,
-68155,72295,71116,71229,71013,72299,70985,71229,71013,72303,71051,72305,
-71051,72302,71013,72309,71051,71229,70985,72313,70997,72315,70985,72312,
-71013,72319,  482,71228,23717,72323,24522,72323,24447,72323,23939,72328,
-23939,72323,24447,72332,22956,72323,23651,72337,21605,72323,   17,72341,
-23939,72343,   17,72340,23651,72347,   17,72323,21605,72351,24447,72353,
-21605,72350,23651,72357, 1368,71228,    7,72361,    5,72362,72049,72365,
-72177,72365,    5,72361,    7,72370,72049,72373,72177,72373,72191,72361,
-72069,72361,   10,72361,72177,72383,72049,72383,27021,72361,24095,72361,
- 9195,72361,52915,72361,23651,72361,51435,72361,21605,72361,    9,72401,
-67297,72361,70097,72361,69729,72361,11277,72361, 5045,72361,10171,72361,
-53941,72361, 9755,72361,26907,72361, 4321,72361,27323,72361, 3833,72361,
- 9317,72361, 4295,72361,53215,72361, 1274,71228,    3,72435,    0,72436,
-72017,72439,72197,72439,    0,72435,    3,72444,72017,72447,72197,72447,
-72211,72435,72037,72435,60856,72435,72197,72457,72017,72457,  586,71228,
-39619,72463,51421,72463,57811,72463,59933,72463,59743,72463, 8093,72463,
- 3837,72463,42435,72463, 4287,72463,53703,72463, 4303,72463,42113,72463,
- 9839,72463,53487,72463, 9579,72463,  483,72463,  803,72494,  828,72463,
-  705,72463,  803,72463,  483,72502,  482,71229,66737,72507,36661,72507,
-62741,72507,68727,72507,68381,72507, 1274,71229,  587,71228,61747,72521,
-25461,72521,61475,72521,63185,72521,61585,72521,  483,71228,56555,72533,
-    6,72535,    5,72536,    7,72535,    5,72535,    6,72542,    6,72543,
-72541,72547,    6,72534,   15,72535,72551,72553,    7,72534,72545,72557,
-72539,72557,   14,72535,72557,72563, 1368,71229,55839,72567,51803,72567,
-54159,72567,54497,72567,  265,72567, 1275,71228,59914,72579,60221,72579,
-18708,72579, 9856,72579,53504,72579, 9805,72579,    9,72590,53391,72579,
-    9,72594,59875,72579,    9,72598,18693,72579,    9,72602,60369,72579,
-    9,72579,18693,72608, 9805,72608,59875,72608,53391,72608,  586,71229,
-   33,72619, 1447,72619, 1141,72619,  889,72619,  795,72619,  787,72619,
-  767,72619,  483,72633, 1505,71229,16937,72636,56555,72636,  581,71229,
-60857,72643, 1325,72645,  331,72645,  571,72645,  585,72645,   59,72645,
-16937,71229, 1505,72656,13947,71229,    2,72661,14217,72663,   11,72661,
- 9875,72667,16091,72667,13955,72667,20501,72667, 9919,71229,20623,71229,
- 9921,71229, 1196,71229,72103,72683,71256,72683,71258,72683,71260,72683,
-71255,72683,59875,72692,53391,72692, 9805,72692,59875,72683,71255,72700,
- 9805,72683,71255,72704,53391,72683,71255,72708,  154,71229,64148,71229,
- 1325,72715,   59,72715,  331,72715,  265,72715,52501,71229,  265,72725,
-  297,71229,18967,72729, 1107,71229,59960,71229,21105,72735,65513,72735,
-65791,72735,65407,72735,21549,72735,19625,72735,65171,72735,59619,72735,
-   15,72735,   88,71229,70177,72755,70176,72754,72757,72759,70176,72755,
-70177,72754,72763,72765, 1141,72755, 1447,72755,   33,72755,   11,72755,
-37409,72755,  972,71229,   59,72779, 1325,72779,  331,72779,27978,71229,
-60796,71229,59381,72789,31102,71229,62905,72793,68761,72793,70401,72793,
-67541,72793,  164,71229,36729,72803,68447,72803,70731,72803,67547,72803,
-54596,71229,44243,72813,20695,71229,  155,71229,20763,71229,  375,72820,
- 1197,71229,71273,72825,59875,72827, 9805,72827,53391,72827,53391,72824,
-71273,72835, 9805,72824,71273,72839,59875,72824,71273,72843,  375,71229,
-20763,72846,20836,71229, 1141,71229,15705,72853,   33,71229,15705,72857,
-27021,71229, 1487,72861,  959,71229,17455,72865,52915,71229, 1487,72869,
-   47,71229,17455,72873,59875,71229, 1197,72877,72683,72879, 1275,72877,
-    9,72883, 1197,72876,71273,72887,  253,71229,21605,72890,  305,72893,
-   25,72893,  713,72893,53391,71229, 1197,72901,72683,72903, 1275,72901,
-    9,72907, 1197,72900,71273,72911,   53,71229,21605,72914,  305,72917,
-   25,72917,  147,72917,  713,72917,27533,71229,   17,72926,63823,72929,
-27995,72929, 9377,72929,30749,71229,    7,72937,26970,71229,    7,72941,
-70864,71229,    7,72945,69849,71229,    3,72948,68155,72951,    3,72949,
-67577,72955,68139,72955,70979,72955,69275,71229,70573,72962,    7,72965,
-69513,71229, 1011,72968,    7,72971, 9780,71229,    7,72975,59381,71229,
-    2,72979,72789,72981,60797,72978,    6,72978,56555,72986,72981,72989,
-26625,71229, 1011,72992,    7,72995, 9731,71229, 1011,72998,    7,73001,
-69790,71229,    7,73005,   13,71229,32805,71229,    7,73010,33221,73013,
-34655,73013,33773,73013,34447,73013,   15,73011,34875,73023,    7,73011,
-34723,73027,   19,71229,   59,73031,   18,71229,65076,71229,    7,73037,
-65493,73039,    7,73036,65171,73043,65791,73043,65513,73043,65407,73043,
-   15,73037,65357,73053,   12,71229,68974,71229,  375,73059,71119,71229,
-    7,73063, 1011,71229,52387,73067,20762,73067,59961,73066, 9617,73073,
-20645,73066, 9935,73066,   17,73066,18967,73081, 9617,73081,    6,73066,
-    7,73067,18967,73088,26625,73066,    7,73093,18967,73067,    7,73096,
-   17,73097, 9731,73066,    7,73103,69513,73066,    7,73107,21315,73066,
-    7,73111,   15,71229,18967,73115,   17,73117,    3,73114,    3,73115,
-72567,73123,   17,73114,  265,71229,    9,73128, 8861,73131,60857,73129,
-    9,73135,65869,73128,  375,73139,   11,71229,60857,73143,    9,73145,
- 1275,73143,    9,73149,    9,73142,60857,71229,    7,73154,   59,73157,
- 1325,73157,  331,73157,  265,73157,    7,73155,  375,73167,  265,73155,
-  375,73171,12377,73154,    7,73175,18967,71229,    7,73179,25793,73181,
-41019,73181, 8495,73181,46863,71229,20035,73188,58742,73188,  903,73188,
-56555,73194,56555,73188,  903,73198,20035,71229,21183,73203,    7,73203,
-  331,73207,  483,73202,46863,73202,    9,73202,    7,73202,  375,73217,
-49713,71229,39085,73221,  136,73220, 1197,73220,  137,73220,  922,73220,
- 1413,73220, 1011,73220,    6,73234,  483,73220,  903,73238,  903,73220,
-  483,73242,    2,73220,    9,73246,44243,73247,    3,73220,    5,73253,
-    6,73255,    9,73253,    2,73221,73257,73261,73229,73261,73258,73261,
-29229,73261,72683,73261,73237,73261,73087,73261,    9,73261,73253,73276,
-73253,73261,    9,73280,    3,73221,73225,73285,73249,73285,73227,73285,
-73247,73285,    9,73293,    9,73220,    2,73296,73285,73299,    2,73297,
-73253,73303,   17,71229,10161,73306,10159,73309,54339,73307,54331,73313,
-49217,73307,49229,73317,54331,73306,54339,73321,49229,73306,49217,73325,
-65037,73306,63823,73329,13755,73306, 9377,73333,27995,73307,27533,73337,
-17573,73307,10001,73341,    7,73306,    3,73345,    7,73346,73307,73349,
-    1,73346,73351,73353,    1,73345,    3,73356,21604,73345,    0,73306,
-    3,73363,    0,73364,73307,73367,    6,73364,73369,73371,    6,73363,
-    3,73374, 1274,73363,  586,73306,    3,73381,    1,73382,    1,73381,
-    3,73386,21604,73381,60856,73306,    3,73393,    6,73394,    6,73393,
-    3,73398, 1274,73393,10001,73306,63823,73405, 9377,73405,17573,73405,
-27533,73306, 9377,73413,63823,73413,27995,73413, 9377,73307,13755,73421,
-27533,73421,10001,73421,63823,73307,65037,73429,10001,73429,27533,73429,
-60857,73307,63697,73437,63779,73437,73397,73437,73401,73437,73371,73437,
-73377,73437,    7,73437,63709,73437,35893,73437,37897,73437,38299,73437,
-73379,73437,73403,73437, 1275,73437,63679,73465,73363,73465,73393,73465,
-  587,73307, 1971,73473, 3507,73473,73385,73473,73389,73473, 5231,73473,
-73353,73473,73359,73473,    0,73473,21783,73473,23983,73473, 4625,73473,
-10603,73473,73361,73473,73391,73473,21605,73473,  713,73503,73345,73503,
-73381,73503, 1011,73306,18967,73511, 9617,73511, 1275,73306,72439,73517,
-72447,73517, 3621,73517, 1991,73517,    1,73517,73473,73527,73489,73517,
-60969,73517,62095,73517, 4907,73517,17711,73517,72457,73517,60857,73517,
- 1325,73543,72435,73543,21605,73306,23713,73549,23709,73549,26865,73549,
-26715,73549,    6,73549,73437,73559,73451,73549,10159,73549,10111,73549,
-26719,73549,10113,73549,67425,73549,70753,73549,70471,73549,23715,73549,
-  587,73549,26625,73581,10107,73581,23651,73581, 1011,73307, 9565,73589,
-    2,73306,36729,73593,68447,73593,67547,73593,70731,73593,    2,73307,
-36727,73603,68451,73603,37895,73603,36079,73603,35575,73603,   15,73306,
-21605,71229,26867,73616,26865,73619, 1179,73617, 1177,73623,  987,73617,
-  989,73627, 1177,73616, 1179,73631,  989,73616,  987,73635,  809,73616,
-  713,73639,  117,73616,   25,73643, 1489,73617, 1471,73647,  147,73617,
-   53,73651,26219,73617,    5,73616,    7,73657,    5,73658,73617,73661,
-    2,73658,73663,73665,    2,73657,    7,73668, 1368,73657,    3,73616,
-    7,73675,    3,73676,73617,73679,    4,73676,73681,73683,    4,73675,
-    7,73686,   16,73675,   10,73616,    7,73693,    2,73694,    2,73693,
-    7,73698, 1368,73693,  586,73616,    7,73705,    4,73706,    4,73705,
-    7,73710,   16,73705,44243,73617,48466,73617,  340,73617, 1397,73617,
-   53,73616,  713,73725,  305,73725,   25,73725,  147,73725, 1471,73616,
-   25,73735,  305,73735,  713,73735, 1489,73735,   25,73617,  117,73745,
-  253,73745, 1471,73745,   53,73745,  713,73617,  809,73755,  253,73755,
-   53,73755, 1471,73755,  253,73616,  305,73765,   25,73765,  713,73765,
-  305,73617,  253,73773, 1471,73773,   53,73773,    9,73617,46863,73780,
-  587,73617, 9381,73785, 9439,73785,73709,73785,73713,73785,25519,73785,
-73683,73785,73689,73785,    5,73785, 9383,73785,62077,73785,64317,73785,
-64815,73785,73691,73785,73715,73785,   17,73785, 9377,73815,73675,73815,
-73705,73815,   11,73617, 7979,73823, 8067,73823,73697,73823,73701,73823,
-73603,73823,73665,73823,73671,73823,    3,73823, 7981,73823,39747,73823,
-43027,73823,43837,73823,73673,73823,73703,73823, 1369,73823, 7971,73853,
-73657,73853,73693,73853,   17,73616,23709,73861,23713,73861,10159,73861,
-10111,73861,    2,73861,73823,73871,73839,73861,26865,73861,26715,73861,
-10113,73861,26719,73861,67425,73861,70471,73861,70753,73861,23715,73861,
-  587,73861,10107,73893,26625,73893,23651,73893, 1369,73616,72365,73901,
-72373,73901, 9927,73901, 9891,73901,    4,73901,73785,73911,73801,73901,
- 9895,73901,19687,73901,20843,73901,21127,73901,72383,73901,   11,73901,
- 9875,73927,72361,73927,46863,73617,    9,73932,    6,73616,62905,73937,
-68761,73937,70401,73937,67541,73937,    7,73616,    6,73617,62883,73949,
-68767,73949,64267,73949,62235,73949,38881,73949,73437,73949,73947,73949,
-72787,73949,    7,73617,25793,73967,41019,73967, 8495,73967,73937,73967,
-72793,73967,  265,73966,  265,73617,    6,73981,    7,73981,    6,73980,
-73985,73987,    7,73980,73983,73991,  903,71229,64148,73995,57522,73994,
-58782,73994,58362,73994,52501,73995,52692,73994,46863,73994,56555,74008,
-    9,73994,56555,74012,  483,73994,56555,74016,49713,74016,49713,73994,
-  483,74022,   15,73995,  483,74027,    7,73994,   59,74031, 1325,74031,
-  331,74031,    7,73995,60857,74038,59875,74039,  375,74039, 9805,74039,
-53391,74039,60857,73995,    6,74051,    7,74051,    6,74050,74055,74057,
-    7,74050,74053,74061,56555,73994,    7,74065,46863,74064,  483,74064,
-    9,74064,58742,71229,    7,74075,    9,74074,46863,74074,  483,74074,
-56555,71229,43502,74085,21036,74085,    6,74089,    6,74088,43503,74085,
-    6,74095,    6,74094,21037,74085,59634,74085,59635,74085,    6,74105,
-    6,74104,21104,74085,59645,74085,43838,74085,21548,74085,21526,74085,
-    5,74118,59644,74085,19624,74085,18967,74085,    5,74126,    6,74128,
-    6,74129,    6,74126,    5,74134,    6,74127,   14,74126,38305,74085,
-    2,74142,59619,74085,    2,74146,    5,74085,59961,74151,    6,74151,
-21526,74150,    6,74150,18967,74158,18967,74150,    6,74162,    6,74163,
-    2,74085,59619,74168,38305,74168,   14,74085,18967,74174,21527,74085,
-74155,74179,    9,74179,19625,74085,21549,74085,43839,74085,21105,74085,
-47640,74084,  922,74084,  918,74084, 1505,74084,  668,74084, 1419,74084,
-  483,74084,  903,74204,   11,74085,    9,74209,   15,74085,74139,74213,
-46863,74084,  903,74216,    9,74084,   11,74221,  903,74220,  587,74220,
-  587,74084,    9,74228,    6,74084,74191,74233,74189,74233,74187,74233,
-74113,74233,74087,74233,74101,74233,74103,74233,74171,74233,74169,74233,
-59619,74251,74149,74233,72981,74233,74185,74233,74145,74233,74173,74233,
-74213,74233,59381,74233,    7,74084,74093,74269,74099,74269,74123,74269,
-74109,74269,74159,74269,74089,74269,74095,74269,74105,74269,74151,74269,
-74111,74269,74115,74269,74117,74269,74157,74269,74121,74269,21105,74269,
-21549,74269,65513,74269,65791,74269,65407,74269,74125,74269,19625,74269,
-65171,74269,74175,74269,74131,74269,74129,74269,74137,74269,74177,74269,
-74161,74269,74165,74269,74163,74269,74141,74269,59619,74269,   15,74269,
-    6,74085,21036,74336,74269,74339,43503,74336,74269,74343,59635,74336,
-74269,74347,    5,74336,74269,74351,18967,74350,74269,74355,18967,74336,
-    5,74358,74269,74361,    7,74085,74091,74365,74097,74365,74107,74365,
-74155,74365,21183,74365,65493,74365,74133,74365,74167,74365,    9,74365,
-  959,74365,   47,74365,  759,74365,  903,74084,    7,74391,  483,74390,
-    9,74390,46863,74390,    9,71229,20035,74400,58742,74400,58930,74400,
-19917,74400,  903,74400,56555,74410,  265,74400, 8861,74415,  587,74400,
-56555,74418,56555,74400,   11,74423,  903,74422,  587,74422,  265,74401,
- 8495,74431,   11,74431,    3,74400,70177,74437,70176,74436,74439,74441,
-70176,74437,70177,74436,74445,74447, 1141,74437, 1447,74437,   33,74437,
-   11,74437,37409,74437,    3,74401,  113,74461,   11,74400,21522,71229,
-    7,74467,63452,71229,    7,74471,13673,71229,    7,74475,17049,71229,
-    3,74478,48643,74481,    2,74479,    3,74479,48637,74487,49581,74487,
-47813,74487,21315,71229,  165,74494, 1011,74494,    7,74499,16163,71229,
-    2,74503,72683,74505,73087,74505,16171,74505,  375,74503,64669,71229,
-    7,74515,  265,74517,12377,71229,  256,74521,17455,74520,    7,74520,
-  375,74527,    7,74521,  241,74530,  331,74531,60857,74520,    7,74537,
-  241,74521,    7,74540,10385,71229,  375,74545,70899,71229,    7,74549,
-18391,71229,    7,74553,18617,71229,    7,74557,12705,71229,    7,74561,
-70573,71229,69275,74564,    7,74567,    3,71228,74332,74571,72750,74571,
-71253,74571,72985,74571,72147,74571,71783,74571,71577,74571,67600,74571,
-45491,74571,42800,74571,59710,74571,74365,74593,74269,74571,59619,74596,
-72735,74571,59619,74600,59694,74571,60563,74571,  629,74571,  101,74571,
-  705,74571,  299,74571,  128,74571,  828,74571,  394,74571,48122,74571,
-70327,74571,66930,74571, 9606,74571,10374,74571,  113,74571,    9,74632,
-74465,74571,73153,74571,73031,74571,73057,74571,73131,74571,71939,74571,
-72733,74571,74415,74571,72145,74571,59381,74653,42134,74571,10291,74571,
-   17,74658,51992,74571,  375,74571,  241,74664,65869,74664,49713,74664,
-60796,74571,74213,74673,  256,74571,  803,74571,  483,74678,  483,74571,
-  803,74682,31103,74571,65869,74686,    6,74571,59619,74690,74365,74693,
-56555,74690,74213,74697,    7,74571,  241,74700,    7,74570,57811,74705,
-59933,74705,59743,74705, 9839,74705, 9579,74705,39619,74705,51421,74705,
- 4287,74705, 4303,74705, 8093,74705, 3837,74705,53487,74705,42113,74705,
-42435,74705,53703,74705,42613,74571,   17,74736,46863,74571,12377,74740,
-    9,74571,  113,74744,49713,74571,  375,74748,   17,74571,42613,74752,
-59619,74752,10291,74752, 9565,74752,41941,74752, 9565,74571,    7,74765,
-   17,74764,65869,74571,60796,74771,60797,74771,31103,74770,60797,74770,
-74773,74779,60796,74770,74775,74783,  375,74770,  241,74571,  375,74788,
-    7,74788,56555,74571,    5,74795,74269,74797,72735,74797,    6,74797,
-74365,74803,    6,74796,74269,74807,72735,74807,   14,74795,72735,74813,
-74269,74813,   15,74795,    6,74795,    5,74820,74269,74823,72735,74823,
-    7,74795,74803,74829,    6,74794,74213,74833,74819,74833,    7,74794,
-74807,74839,74823,74839,71229,74838,74807,74845,74823,74845,74797,74845,
-74813,74845,74813,74839,12377,74571,46863,74856,41941,74571,    7,74861,
-   17,74860,59619,74571,74269,74866,72735,74866,    6,74866,74365,74873,
-    6,74867,74269,74877,72735,74877,    7,74867,   17,74866,    2,71228,
-71233,74887,56555,74887,72129,74887,72127,74887,59619,74895,71235,74887,
-72790,74887,71627,74887,74153,74887,74155,74887,74365,74906,74372,74887,
-74158,74887,74269,74913,74279,74887,74350,74887,74269,74919,74353,74887,
-74266,74887,74150,74887,    6,74927,74365,74929,    6,74926,74269,74933,
-74269,74927,74287,74887,74336,74887,    5,74940,74269,74943,60261,74887,
-71629,74887,63737,74887,37179,74887, 9535,74887,63743,74887, 9537,74887,
-37185,74887,74264,74887,74174,74887,74269,74965,74315,74887,73073,74887,
-37887,74887,37205,74887,37235,74887,74085,74887,    5,74978,    6,74981,
-74365,74983,    6,74980,74269,74987,74269,74981,    6,74978,    5,74992,
-74269,74995,    6,74979,74213,74999,   14,74978,74269,75003,    5,74887,
-74336,75006,74269,75009,74085,75006,    6,75013,74365,75015,    6,75012,
-74269,75019,74269,75013,74085,75007,74233,75025,    6,75006,72735,75029,
-74085,75028,74269,75033,74269,75029,74085,75029,74233,75039,    7,75006,
-71853,75043,72049,75043,72177,75043,73901,75043,    6,75007,74365,75053,
-    7,75007,72131,74887,72753,74887,74335,74887, 9563,74887,74382,74887,
-   10,74887,72177,75069,72049,75069,71853,75069,73901,75069,   14,74887,
-74085,75079,74233,75081,74085,75078,74269,75085,72735,75079,74269,75079,
-72191,74887,72069,74887,73927,74887,71881,74887,64759,74887,63763,74887,
-63813,74887, 9559,74887,74213,74887,74233,75108,74365,74887,74155,75112,
-    9,75112,43123,74887,42606,74887,53318,74887, 9362,74887,27218,74887,
-28189,74887,74233,74887,59381,75130,74213,75130,72789,74887,59381,75136,
-64289,74887,26182,74887,28991,74887, 8804,74887,54289,74887,53802,74887,
- 8150,74887, 1290,74887,63679,75155, 9533,75155,37145,75155,  525,74887,
- 9533,75163,63679,75163,37145,75163,  922,74887, 1413,74887,73615,74887,
-73127,74887,73009,74887,73035,74887,73081,74887,71943,74887,72729,74887,
-73511,74887,41762,74887, 7971,74887,    9,75192,53517,74887,    9,75196,
-  483,74887,  903,75200, 9195,74887,    9,75204, 1275,74887,   17,75208,
- 9533,75211,37145,75211,63679,75211,27021,74887,    9,75218,    7,74887,
-    2,75223,60857,75225,71229,75227,    5,75222,71853,75231,72049,75231,
-72177,75231,73901,75231,75229,75231,    2,75222,73616,75243,75231,75245,
-21605,75243,71229,75248,75231,75251,71229,75243,21605,75254,75231,75257,
-    6,74887,74150,75260,74269,75263,74085,75260,    5,75266,74269,75269,
-56555,75261,71229,75272,74085,75261,74155,75277,    9,75277,    5,75260,
-72735,75283,74085,75282,74269,75287,74269,75283,74085,75283,74233,75293,
-75275,75283,   11,75261,21604,75299,21604,75298,21605,75299,75303,75305,
-21605,75298,75301,75309,52915,74887,    9,75312,    6,74886,23717,75317,
-24522,75317,24447,75317,23939,75322,23939,75317,24447,75326,22956,75317,
-23651,75331,   17,75317,21605,75335,24447,75337,21605,75334,23651,75341,
-21605,75317,   17,75345,23939,75347,   17,75344,23651,75351,    7,74886,
-27021,75355,24095,75355, 9195,75355,52915,75355,21605,75355,    9,75365,
-67297,75355,26907,75355, 9755,75355, 9317,75355, 3833,75355,23651,75355,
-51435,75355,27323,75355, 4321,75355,69729,75355,53215,75355, 4295,75355,
-70097,75355,53941,75355,10171,75355, 5045,75355,11277,75355,42155,74887,
-    9,75402,   19,74887,   12,74887,   11,74887,    9,75410,    9,74887,
-74365,75414,42155,75414,27021,75414,52915,75414, 9195,75414,25793,75414,
-53517,75414, 7971,75414, 8495,75414,41019,75414,   11,75414,   17,74887,
- 1275,75438, 9533,75441,37145,75441,63679,75441, 8495,74887,    9,75448,
-  903,74887,  483,75452,21605,74887,26219,75457,42810,75456,75056,75456,
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-77632,77671,77640,77671,77631,77671,77591,77676,77639,77671,77591,77680,
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- 1216,77750,40461,77751,    9,77879,59573,77751,  375,77883,69467,77751,
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-    4,78733,    5,78732,78741,78743,20103,77751,  375,78747, 1471,77751,
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- 1369,78774,77591,78777,65076,77751,   17,78780,65625,78783, 1275,77751,
-    5,78786,    9,78789,    5,78787,   17,78793,35187,77751, 1196,78797,
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-  922,78797, 1011,78797,    6,78814,  903,78797,  483,78818,  483,78797,
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-78841,78847,    9,78849,    9,78846,78841,78853,    3,78797,    5,78857,
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-    2,78919,    3,78919,    2,78918,    3,78918,18967,77751,  295,78929,
- 1108,78929, 1011,78929,    9,78934,    9,78929, 1011,78938,  483,78929,
-18967,78943,    5,78944,    5,78945,21036,78943,21037,78943,    4,78943,
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-    5,79020,60857,77751,  241,79030,    9,79033,    5,79030,    9,79037,
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-66423,79065,66883,79065,66405,79065,66397,79065,67687,79065,78047,79065,
-    9,79087,36544,79065, 9875,79091,20501,79091,68177,79065, 9875,79097,
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-35187,79065,   11,79112,20501,79115, 9875,79115,   11,79065,35187,79120,
- 9875,79123,20501,79123,60857,79065,    5,79129,   17,79131,    5,79128,
-    9,79135,    3,77750,40779,79139,63907,79139,73421,79139,73429,79139,
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-    4,79189,    5,79188,79197,79199, 5123,79139,    5,79203,    4,79202,
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-    4,79216,79219,79221,    4,79217,    5,79216,79225,79227,73306,79139,
- 9377,79231,63823,79231,40705,79139, 9377,79237,63823,79237,21036,79139,
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-    4,79139,20501,79280, 9875,79280,    5,79139,    6,79287,78827,79289,
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- 8401,79309, 4137,79309,14625,79309, 4569,79309,37019,79309, 4063,79309,
- 3863,79309,37377,79309,20219,79309,10273,79309, 9955,79309,20697,79309,
-    9,79139,78725,79352,78827,79352,35187,79139, 1505,79359,   17,79139,
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-79387,79469,79391,79469,79427,79469,79397,79469,79401,79469,79403,79469,
-79405,79469,79429,79469,79409,79469,79431,79469,79415,79469,79423,79469,
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-79519,79531, 9875,79139,    4,79534,    5,79534,    4,79535,    5,79535,
-    4,77750,    3,79545,    5,77750,10256,79549,37356,79549, 4745,79549,
- 1011,79555,17423,79549, 1011,79559,63550,79549,64489,79549,63493,79549,
-   17,79566,70803,79549,56555,79571,74752,79549, 8982,79549,74571,79549,
-   17,79578, 8861,79549,   17,79582,37844,79549,27979,79549,  483,79589,
-  253,79549,56555,79593, 8337,79549,  483,79597,  241,79549, 1325,79549,
-   17,79602,  331,79549,   17,79606, 1328,79549,  334,79549,   53,79549,
-56555,79615,20501,79549, 1011,79619,36773,79549,  483,79623, 9875,79549,
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-   59,79549,   17,79652,20103,79549,  483,79657, 1471,79549,56555,79661,
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-16381,79665,13325,79665,19513,79665,35843,79665, 8401,79665, 4137,79665,
-14625,79665, 4569,79665,20219,79665, 3863,79665, 4063,79665,20697,79665,
-37019,79665, 9955,79665,10273,79665,37377,79665,18967,79549,  165,79709,
- 1369,79549,38057,79713,35187,79549,    3,79717,    3,79716,   17,79549,
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-    2,79746,    3,79746,    2,79747,    3,79747,    5,77751, 1196,79756,
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-25380,79801,79785,79809,79789,79801,79783,79801,79799,79801, 1369,79801,
-21605,79818,79785,79821,79795,79801,21605,79801, 1369,79826,79785,79829,
- 1216,79757,  413,79757, 1197,79757,79759,79837,79546,79757,  903,79757,
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-79889,79891,79777,79879,    7,79895,    6,79894,79897,79899,    6,79895,
-    7,79894,79903,79905,28337,79879,    3,79756,79861,79911,    7,79913,
-    6,79912,79915,79917,    6,79913,    7,79912,79921,79923,    2,79757,
-79779,79927,    7,79929,    6,79928,79931,79933,    6,79929,    7,79928,
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-    2,79963,    3,79963,    2,79962,    3,79962,    9,79757,63493,79973,
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-79112,79987,    9,79989,78847,79987,    9,79993, 1216,79987,12371,79987,
-    5,79999,    4,79998,80001,80003,    4,79999,    5,79998,80007,80009,
-  413,79987,  375,79987,60454,79987,60369,80017,  566,79987,35187,79987,
-79065,80022,    9,80025,79106,79987, 1011,79987,37407,79987,10287,79987,
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-38057,79987,    9,80048,  165,79987,65869,80052,    5,79986,    4,79987,
-    5,79987,79065,80060,56555,80060,60369,80065,  483,80060,79065,79987,
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-60327,80119,60719,80119,80097,80119,80087,80119,57901,80119,80093,80119,
-80103,80119,80105,80119,  483,80084,    4,80136,80119,80139,    4,80137,
-80107,80143,  483,79987,    5,80146,    2,77751,79538,80151,79541,80153,
-79514,80151,79521,80157,79024,80151,79027,80161,78958,80151,78963,80165,
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-    5,80178,78963,80181,    5,80179,78955,80185,    1,80151,    7,80189,
-    4,80191,    4,80190,   16,80189,    4,80189,    7,80198,28714,80151,
-   17,80203,79286,80151,79541,80207,79521,80207,35187,80150,79289,80213,
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-    9,80151,    4,80150,  265,80231,    5,80150,80193,80235,28337,80235,
-    4,80151, 1011,80241,    5,80151,80195,80245,80201,80245,79534,80245,
-79543,80251,79508,80245,79531,80255,79021,80244,79027,80259,78943,80244,
-78963,80263,79021,80245,79029,80267,78943,80245,78971,80271,80197,80245,
-28219,80245,30475,80245,23939,80245,79139,80244,79541,80283,79521,80283,
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-    5,80293,79537,80301,79511,80301,79177,80301,79179,80301,79285,80301,
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- 7533,80533, 4617,80533,  483,81683,13907,80533,  483,81687, 7563,80533,
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- 4555,82169,14073,82169, 4971,82169,21605,82169,65869,82215,38305,82169,
-56555,82219,  483,82219,  241,80532, 4437,82225,    7,82225,  265,82229,
-39787,82225,51615,82225, 4613,82225,12571,82225,14073,82225, 4971,82225,
-  375,82225,  510,82225,51937,82225,16683,82225, 4805,82225,    9,82225,
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-35187,82278, 1011,80532,10001,82283,  903,82285,27533,82283,  903,82289,
-79139,82283,  903,82293,82267,82283,    9,82296,82278,82283,81231,82283,
-21605,82283,  903,82305,    9,82283,82267,82308,  903,80532, 3549,82313,
- 2001,82313,21769,82313,10291,82313, 1011,82321,42613,82313, 1011,82325,
-79549,82313, 1011,82329,24095,82313,25793,82313, 8495,82313, 5045,82313,
-11277,82313,39787,82313,14073,82313, 4971,82313,21605,82313,  955,82349,
-    9,82349,65869,82349,38305,82313, 1011,82357,  483,82357,41019,82313,
-  264,80533,   53,82365, 1471,82365,  253,82365,72567,82365,76285,82365,
-76939,82365,77751,82364,  375,82379,  471,82365,  367,82365,  357,82365,
-  341,82365,  241,82389,  241,82365,    9,82393,  483,82393,  413,80533,
-78106,82398,78107,82399,82401,82403,78459,82403,78106,82399,78107,82398,
-82409,82411,78141,82411,77949,82411,79987,82398,77949,82419,79757,82398,
-77949,82423,78459,82398,77949,82427,  331,82398,17993,82431,  261,82398,
-17993,82435,77949,82399,78459,82439,17993,82399,  331,82443, 1275,82398,
-17993,82447,   15,82398,17993,82451,  375,80533,   53,82455, 1471,82455,
-  253,82455, 1369,82455,   11,82455,  261,80533,  413,82467,18391,82469,
-  413,82466,17993,82473,15029,82467,  264,82477,  265,82476,82479,82481,
-  264,82476,  265,82477,82485,82487,16531,80533,  483,82491,12745,80533,
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-82625,82627,    5,82623,    4,82622,82631,82633,80058,80533,79757,82637,
-    2,82639,    3,82638,82641,82643,    3,82639,    2,82638,82647,82649,
-80244,80533,   17,82653, 1447,80533,14315,82657,   33,80533,14315,82661,
-  759,80533,17125,82665,   47,80533,17125,82669, 1471,80533,41019,82672,
-25793,82672, 8495,82672,   53,80533,25793,82680,41019,82680, 8495,82680,
-25793,80533,  586,82688,  586,82689,   11,82688, 1369,82688,  587,82688,
-82693,82699,  253,82688,   53,82688, 1471,82688,  587,82689,82691,82709,
-   25,82689,  713,82689,  305,82689,  257,82688,  257,82689, 1325,80533,
-74571,82723,63493,82723, 8861,82723,15029,82723,41019,80533,  586,82732,
-  586,82733,  587,82732,82737,82739,   11,82732,  253,82732, 1471,82732,
-   53,82732,  713,82733,   25,82733,  305,82733,  587,82733,82735,82757,
-  257,82732, 1369,82732,  257,82733,   59,80533,63493,82767,74571,82767,
- 8861,82767,15029,82767,79139,80533,80244,82777,80245,82777,80293,82777,
-    4,82782,80319,82785,    4,82783,80301,82789,80298,82777,80319,82793,
-21036,82777,21037,82777, 1216,82777,  413,82777,80245,82776,82779,82805,
- 1011,82777,  903,82808,21037,82776,82797,82813,80244,82776,82781,82817,
-21036,82776,82799,82821,65869,82777,    9,82777,  903,82777, 1011,82828,
-    4,82777,80293,82833,80315,82835,80293,82832,80319,82839,79549,80533,
-80450,82843,80451,82843,80497,82843,    2,82848,80519,82851,    2,82849,
-80501,82855,80498,82843,80519,82859, 1216,82843,  413,82843,80451,82842,
-82845,82867,  903,82843, 1011,82870,80450,82842,82847,82875,56555,82843,
-  483,82843, 1011,82843,  903,82882,    2,82842,80501,82887,79719,82887,
-    3,82842,80337,82892,  483,82893,    3,82843,82867,82899, 1369,82899,
-    2,82843,82875,82905,82895,82905,80497,82905,80515,82911,80497,82904,
-80519,82915,80519,82905,80437,82905,80489,82905,79587,82905,79721,82905,
-79645,82905,80337,82842,    3,82930,82905,82933,    3,82931,82887,82937,
-27533,80533, 1216,82941,  413,82941,21036,82941,21037,82941, 1011,82941,
-  903,82950,21037,82940,82947,82955,21036,82940,82949,82959,    9,82941,
-65869,82941,  903,82941, 1011,82966,42613,80533, 1216,82971,  413,82971,
-  903,82971, 1011,82976,  483,82971,56555,82971, 1011,82971,  903,82984,
-    2,82971,42667,82989,42791,82989,42709,82989,    3,82971, 1369,82997,
-    2,82970,42795,83001,    3,82970,  483,83005,10001,80533, 1216,83009,
-  413,83009,21036,83009,21037,83009,21036,83008,83017,83019, 1011,83009,
-  903,83022,21037,83008,83015,83027,65869,83009,    9,83009,  903,83009,
- 1011,83034,10291,80533, 1216,83039,  413,83039,  903,83039, 1011,83044,
-56555,83039,  483,83039, 1011,83039,  903,83052,    2,83039,37871,83057,
-36133,83057,35803,83057,    3,83039, 1369,83065,    2,83038,36131,83069,
-    3,83038,  483,83073, 1369,80533,26331,83076,25793,83076,23755,83076,
-27805,83076,40381,83077,41559,83076, 8717,83076,21036,83077,39633,83076,
-78147,83076,79309,83076,10055,83076,42731,83076, 3785,83076,79665,83076,
- 4329,83076,10351,83076, 4311,83076,38305,83076,41941,83115,41019,83076,
- 8495,83076,38305,83077,41019,83123,    5,83077,18967,83126,18967,83077,
-   11,83131,    5,83130,   17,80533,25367,83137,62984,83137,60857,83137,
-  265,83143,  241,83142,  241,83137,60857,83148,21605,83136,26625,83153,
-  265,83136,35187,83157,21605,83137,25793,83161,35187,83137,  265,83165,
-  587,80533,62984,83169,62518,83169,68807,83169,36526,83169,17125,83169,
-  265,83169,35187,83180,35187,83169,60857,83184,  265,83184,32103,83168,
-38305,83168,  483,83193,39787,83168,14073,83168, 4971,83168,  265,83168,
-60857,83203,  241,83169,60857,83206,60857,83169,  241,83210,35187,83210,
-   11,80533,25793,83216,41019,83216, 8495,83216,  265,83217, 8495,83225,
-45149,83216,21605,83216,  903,83231,    9,83231,24095,83216,11277,83216,
- 5045,83216,  265,83216, 8861,83243,    3,83217,  375,83247,38305,80533,
-76424,83251,54262,83251,54219,83251,76453,83251,42185,83251,42193,83260,
-42194,83251,42191,83251,42193,83251,42185,83268,80450,83251,37844,83251,
-37845,83251,44663,83277,38707,83277,43483,83277,37897,83277,80451,83251,
-80450,83250,83287,83289,  120,83251,   77,83251,32805,83251,54225,83251,
-54129,83298,76337,83251,76307,83302,76307,83251,76337,83306,54129,83251,
-54225,83310,  113,83251,   25,83314,  506,83251, 1216,83251,  413,83251,
- 1413,83251,37845,83250,45411,83327,83275,83327,37899,83327,37897,83250,
-83275,83335,65076,83251,37844,83250,    6,83340,83277,83343,83277,83341,
-80451,83250,83273,83349,   66,83251,   33,83353,   25,83251,  113,83356,
- 1281,83251, 1086,83251,  922,83251,  483,83251,  241,83366,  587,83367,
-  903,83366,  241,83251,  483,83374,  903,83251, 1011,83378,  483,83378,
- 1369,83250,41941,83385,  587,83250,  483,83389,  587,83251, 1011,83392,
- 1011,83251,  903,83396,   11,83397,  587,83396, 1275,83250,46169,83405,
-60857,83251,56555,83408,56555,83251,   11,83413,60857,83412,    2,83250,
-80531,83419,46169,83419,    3,83250,43053,83425,  483,83425,    2,83251,
-80435,83431,80495,83431,43461,83431,80529,83431,46599,83431,43425,83431,
-    3,83251,43837,83445,43027,83445,   11,83445,   25,83451,39747,83445,
-   11,83444,   33,83457, 1369,83445,   11,83251,    3,83463,  113,83465,
-    3,83462,   33,83469,   15,80533, 1216,83473,18617,83475,  413,83473,
-18391,83479,25545,83473,62942,83473, 1216,83472,18759,83487,  413,83472,
-17993,83491,60857,83473, 1011,83494,18967,83473,   17,83499, 1011,83473,
-60857,83502,    3,83472,37663,83507,    3,83473,37611,83511,38155,83511,
-35927,83511,21605,80533,27065,83519,27261,83519,21036,83519,21037,83519,
-27067,83519,27255,83519,73221,83519,55211,83519,36256,83519,51593,83519,
-55803,83519,64345,83519,54477,83519, 1216,83519,  413,83519,21037,83518,
-83525,83551,21036,83518,83527,83555,  247,83519,  934,83519,    9,83519,
-35187,83562,   11,83563, 1011,83519,  903,83568,   17,83518,26625,83573,
-   11,83518,  903,83577,    9,83577,   11,83519,  903,83582,  903,83519,
-27021,83587, 1011,83586,   11,83587,   11,83586,35187,83519,    9,83596,
-65869,83519,    5,83518,28337,83603,    5,83519,27021,83607,52915,83607,
- 9195,83607,20501,83607, 9875,83607,30475,83607,28219,83607,23939,83607,
- 1275,80533,43214,83624,43214,83625,43215,83624,83629,83631, 1216,83625,
-18617,83635,  413,83625,18391,83639,43215,83625,83627,83643,40675,83625,
-73994,83625, 1216,83624,18759,83651,  413,83624,17993,83655,71229,83625,
-  903,83658,  903,83625,71229,83662,38305,83624,46169,83667,    5,83624,
-55211,83671,    5,83625,53813,83675,10107,83675,69877,83675,  483,80533,
-  241,83683,    9,83685,    9,83682,   11,83689,   17,83683,  903,83693,
-   11,83683,    9,83697,    5,83682,   53,83701,  253,83701, 1471,83701,
-    5,83683, 1505,83709,    9,80533,80151,83712, 1011,83713,82267,83717,
-  241,83713,  483,83721,  483,83712,   11,83725, 1011,83712,81945,83729,
-   11,83729,    3,83712, 1369,83735,    3,83713,  483,83739,17025,80533,
-    5,83742,    2,83745,   17,83746,   17,83745,    2,83750,    2,83751,
-  164,83745,38057,83743,38057,83742,38056,83742,83759,83763,38056,83743,
-83761,83767,    3,83742,83749,83771,83753,83771,83757,83771,    3,83743,
-83755,83779,13737,80533,  375,83783,80151,80533,    9,83786,35187,83787,
-    9,83791,    5,83787,    9,83795,    5,83786,   17,83799,79987,80533,
-  413,83802,77949,83805,  413,83803,77859,83809, 1216,83802,78669,83813,
- 1216,83803,77857,83817,    4,83803,79549,83821,    2,83823,    3,83822,
-83825,83827,    3,83823,    2,83822,83831,83833,    4,83802,79757,83837,
-    2,83839,    3,83838,83841,83843,    3,83839,    2,83838,83847,83849,
-79757,80533,  413,83852,77949,83855,  413,83853,77859,83859, 1216,83852,
-78669,83863, 1216,83853,77857,83867,    2,83853,79139,83871,    4,83873,
-    5,83872,83875,83877,    5,83873,    4,83872,83881,83883,    2,83852,
-79987,83887,    4,83889,    5,83888,83891,83893,    5,83889,    4,83888,
-83897,83899,    3,80532,79231,83903,79237,83903,79365,83903,79375,83903,
-73413,83903,73405,83903,40793,83903,40787,83903,71751,83903,36001,83903,
-71731,83903,72115,83903,72929,83903,71713,83903,    7,83903,    4,83933,
-83519,83935,32103,83903,26106,83903,41746,83903,43005,83903, 8800,83903,
-64513,83903,63253,83903,62215,83903,59910,83903,41019,83903,   11,83956,
-60755,83903,60707,83903, 9852,83903,48975,83903,48245,83903,48451,83903,
-76271,83903,82267,83903,    9,83974,82278,83903,83157,83903,81231,83903,
-81235,83903,81519,83903,  386,83903,  347,83903,  510,83903,  273,83903,
-  281,83903, 1477,83903, 1516,83903,  948,83903,  165,83903,  903,84004,
-40704,83903,79139,84009,27533,84009,10001,84009,73307,83903,79139,84017,
-27533,84017,10001,84017,53500,83903,37595,83903,36049,83903,36539,83903,
-68851,83903,36041,83903,37573,83903,36275,83903, 1505,83903, 1011,84040,
-25793,83903,   11,84044,64397,83903,  483,84049, 8495,83903,   11,84052,
-60618,83903,  483,84057,  375,83903,  305,84060,  903,83903,  165,84064,
- 1011,83903, 1505,84068,  305,83903,  375,84072,    4,83903,56555,84076,
-  483,84079,    5,83902,57811,84083,59743,84083,59933,84083, 9579,84083,
- 9839,84083,51421,84083,39619,84083, 4303,84083, 4287,84083, 8093,84083,
- 3837,84083,42113,84083,53487,84083,53703,84083,42435,84083,48885,83903,
-  483,84115,   11,83903,25793,84118,41019,84118, 8495,84118,59875,84118,
- 9805,84118,53391,84118,    9,83903,82267,84132,  483,84132,38305,84132,
-79139,84139,10001,84139,27533,84139,38305,83903,    9,84146,79139,84149,
-27533,84149,10001,84149, 9805,83903,   11,84156,    5,84157,  483,83903,
-    9,84162,56555,83903,    4,84166,  483,84169,53391,83903,   11,84172,
-    5,84173,59875,83903,   11,84178,    5,84179,    2,80532,11087,84185,
-11307,84185,11713,84185,10439,84185, 2221,84185,10665,84185,11037,84185,
- 2233,84185,17777,84185, 2215,84185,18739,84185, 4339,84185,79091,84185,
-79097,84185, 5075,84185, 4643,84185,79115,84185,79123,84185,59811,84185,
-36619,84185,68291,84185,68299,84185,24213,84185,24059,84185,22149,84185,
-22143,84185,72667,84185,60839,84185,35665,84185,59819,84185,59869,84185,
-35487,84185,    7,84185,    4,84251,27306,84185,24095,84185,53910,84185,
-55537,84185,79280,84185,80301,84263,83607,84185,40455,84185,25313,84185,
- 8714,84185,32103,84185,26106,84185, 8800,84185,41746,84185,81569,84185,
-48009,84185,49001,84185,49321,84185, 4551,84185,81531,84185,81289,84185,
-81245,84185,83729,84185,10196,84185,70136,84185,10603,84185,    9,84305,
- 4625,84185,    9,84309,81565,84185,    9,84313,23983,84185,    9,84317,
-76501,84185,68176,84185,79065,84323,59787,84323, 9513,84323,36545,84185,
-79065,84331,59787,84331, 9513,84331,  759,84185,35187,84339,10107,84185,
-  265,84342,  241,84343,69877,84185,  265,84348,  241,84349,  305,84185,
- 8495,84354,  959,84185,35187,84359,28714,84185,77079,84185, 1011,84365,
- 1010,84364,84367,84369, 1010,84365, 1011,84364,84373,84375,   47,84185,
-35187,84379,48245,84185,48975,84185,48451,84185,11277,84185, 5045,84185,
-52603,84185, 8495,84185,   10,84394,   10,84395,  305,84394,   11,84394,
-84399,84403,   11,84395,84397,84407,  331,84185,71229,84411,79549,84185,
- 1011,84415,  265,84185,53813,84418,71229,84419,10107,84418,69877,84418,
-79757,84419,  903,84185,55211,84431,10291,84185, 1011,84435,25793,84185,
-   10,84438,   10,84439,27021,84438,   11,84438,84443,84447,   11,84439,
-84441,84451,42613,84185, 1011,84455, 1325,84185,71229,84459,    5,84185,
-27255,84463, 9287,84463,53167,84463,21605,84462,    4,84185,79139,84472,
-80301,84475,49475,84473,73066,84473,28715,84473, 1011,84473,71229,84484,
-71229,84473, 1011,84488,27693,84473,10047,84473,79287,84473,41019,84185,
-   10,84498,   10,84499,   11,84498,84503,84505,   11,84499,84501,84509,
-   59,84185,71229,84513,    4,84184, 8495,84517,41019,84517,25793,84517,
-49001,84517,49321,84517,48009,84517,  265,84517,78147,84517,23755,84517,
-39633,84517, 3785,84517, 8717,84517,41559,84517, 4311,84517,79665,84517,
-10351,84517,26331,84517,42731,84517, 4329,84517,79309,84517,27805,84517,
-10055,84517,    5,84184,27021,84563,24095,84563, 9195,84563,52915,84563,
-21605,84563,    9,84573,23651,84563, 9755,84563,51435,84563,67297,84563,
- 4321,84563,69729,84563,26907,84563, 9317,84563,53215,84563,27323,84563,
-53941,84563, 3833,84563,10171,84563,70097,84563, 4295,84563, 5045,84563,
-11277,84563,53813,84185,  265,84610,  241,84611,48885,84185, 1011,84617,
-   11,84185,25793,84620, 8495,84620,41019,84620,   17,84185,30091,84629,
-65869,84185,   15,84632,79065,84635,59787,84635, 9513,84635,  803,84633,
-38305,84185, 1011,84645, 1347,84645,   15,84185,28714,84650,28714,84651,
-65869,84650,79065,84657, 9513,84657,59787,84657,28715,84650,84655,84665,
-28715,84651,84653,84669, 9195,84185,  241,84673,35187,84673,21605,84185,
-27255,84679,    7,84678,    4,84682,    4,84683,84253,84679,   16,84678,
-55211,84679,  803,84679,    9,84679,   17,84678,  903,84679,65869,84679,
-    4,84679,84699,84705,    5,84679,84685,84709,84691,84709,27021,84709,
-    4,84678,    7,84716,84709,84719,    5,84678,84687,84723,52915,84185,
-35187,84727,  241,84727,27021,84185,35187,84733,  241,84733,25793,84732,
-79139,84185,80245,84740,    4,84740,80301,84745,    5,84740,80151,84748,
-    4,84741,80319,84753,84751,84753,80207,84753,80283,84753,    5,84741,
-84743,84763,    5,80532,80759,84767,    7,84767,    2,84770,    3,84770,
-83251,84775,    2,84771,84776,84779,84775,84779,83251,84782,83251,84779,
-84775,84786,    3,84771,84773,84791,83251,84793,27306,84767,24095,84767,
-52603,84767,53910,84767,55537,84767,84438,84767,84394,84767,84498,84767,
-81539,84767,25793,84767,27021,84814,84185,84814,64289,84767,84060,84767,
-81569,84767,83729,84767,81245,84767,81289,84767,70136,84767,10196,84767,
-  273,84767, 1477,84767,  281,84767,  948,84767, 1516,84767,81565,84767,
-    9,84847, 1505,84767, 1011,84850, 5045,84767,11277,84767, 4551,84767,
-  922,84767, 1413,84767,20831,84767,19783,84767,20053,84767,58775,84767,
- 9195,84767,  265,84873,   47,84767,60857,84877,  165,84767,  903,84880,
-41019,84767,84185,84884,27021,84767,25793,84888,  265,84889, 8495,84767,
-84185,84894,  959,84767,60857,84899,   89,84767, 5019,84903,60857,84903,
-  375,84767,83903,84908,  759,84767,60857,84913,  265,84767,53813,84916,
-69877,84916,10107,84916, 1011,84767, 1505,84924,54597,84925,  903,84767,
-  165,84930,  483,84930,54295,84931, 1447,84767,18967,84939, 1141,84767,
-18967,84943,    2,84767,61780,84947,    9,84947,60857,84950,54295,84947,
-70085,84947,11529,84947,10155,84947,53925,84947,60857,84947,    9,84964,
-    3,84767, 8063,84969,42361,84969,53667,84969,84185,84767,41019,84976,
- 8495,84976,25793,84976,83903,84767,  375,84984,   33,84767,18967,84989,
-    2,84766,27021,84993,24095,84993, 9195,84993,52915,84993,21605,84993,
-    9,85003,67297,84993, 9755,84993,51435,84993,23651,84993, 4321,84993,
-26907,84993,69729,84993,10171,84993,53941,84993,70097,84993,53215,84993,
- 9317,84993, 4295,84993,27323,84993, 3833,84993, 5045,84993,11277,84993,
-    3,84766,57811,85041,59743,85041,59933,85041,51421,85041,39619,85041,
- 4303,85041, 4287,85041, 9579,85041, 9839,85041, 8093,85041, 3837,85041,
-53487,85041,42113,85041,53703,85041,42435,85041,52915,84767,  265,85073,
-  587,84767,60857,85077,70573,85077, 1369,84767,43503,85083,  483,84767,
-  903,85086,21605,84767,    9,85091,  145,85091,10107,84767,  265,85096,
-    9,84767,53813,84767,  265,85102,69877,84767,  265,85106,    4,80532,
-83715,85111,80781,85111,83789,85111,    7,85111,    2,85118,83511,85121,
-    2,85119,82163,85125,83507,85125,82573,85125, 1368,85111,83511,85133,
-25525,85111,84498,85111,84438,85111,84709,85111,79634,85111,80501,85145,
-84394,85111,64513,85111,63253,85111,62215,85111,81539,85111,64397,85111,
-  483,85159,83787,85111,    9,85163,43214,85111, 8495,85111,84185,85168,
-  587,85169,  331,85111,60857,85175,79139,85111,  903,85179,  265,85111,
-60857,85183,79987,85183,10001,85111,  903,85189,41019,85111,84185,85192,
-  587,85193,27533,85111,  903,85199,   59,85111,60857,85203,    3,85111,
-    4,85206,85125,85209,38305,85206,    2,85111,    7,85214,83511,85217,
-79549,85214,80501,85221,49155,85215,62464,85215,43215,85215,  903,85215,
-60857,85230,60857,85215,  903,85234,42705,85215,10311,85215,79641,85215,
-84185,85111,25793,85244,41019,85244, 8495,85244,25793,85111,84185,85252,
-  587,85253, 1325,85111,60857,85259,    2,85110, 8495,85263,25793,85263,
-41019,85263,49321,85263,49001,85263,48009,85263,  265,85263,78147,85263,
-39633,85263,23755,85263, 3785,85263, 8717,85263,26331,85263, 4329,85263,
-79309,85263,10055,85263,41559,85263,27805,85263, 4311,85263,79665,85263,
-42731,85263,10351,85263,49205,85111,  903,85309,21605,85111,  903,85313,
-  155,85313, 1275,85111,43215,85319,77751,85111,38305,85111,    7,85324,
-    2,85326,    2,85327, 1368,85324, 1369,85324,    2,85325,85335,85337,
-    3,85325,85329,85341,85333,85341,84185,85341,    2,85324,    7,85348,
-85341,85351,    3,85324,85331,85355,79549,85111,80451,85358,    2,85358,
-80501,85363,    3,85358,80337,85366,    2,85359,80519,85371,85369,85371,
-80437,85371,80489,85371,    3,85359,85361,85381,    5,80533,83932,85385,
-83933,85385,64148,85385,64149,85385,    0,85385,56555,85395, 1369,85397,
-    7,85385,83903,85400,60857,85400,  265,85401,83903,85407, 1275,85401,
-60857,85411,    0,85384,63015,85415,25380,85415,85413,85415,21605,85415,
- 1369,85422, 1369,85415,21605,85426,    7,85384,85417,85431,25381,85431,
-85415,85435,63014,85431,85415,85439,85419,85431,85399,85431,85429,85431,
-85425,85431,  483,85431,60857,85450,85415,85453,60857,85431,  483,85456,
-85415,85459,54440,85385,83903,85385,    7,85464,27425,85385,53137,85385,
- 9365,85385,  803,85385,60857,85474,62310,85385,85206,85385,85125,85481,
-  241,85385,  483,85485,54295,85484,54295,85385,  241,85490,  483,85384,
-   53,85495,  253,85495, 1471,85495, 1275,85384,55211,85503,21605,85384,
-28337,85507, 1369,85385, 1011,85511,60857,85385,    7,85514,  803,85514,
-    2,85384,85389,85521,85393,85521,55211,85521,64345,85521,84132,85521,
-36256,85521,83903,85521,    9,85534,    9,85521,83903,85538,35187,85538,
-35187,85521,    9,85544,    3,85384,85467,85549,85387,85549,85403,85549,
-85401,85549,83903,85557,85391,85549,85517,85549,85405,85549,   53,85549,
- 1471,85549,  253,85549,76285,85549,76939,85549,72567,85549,  241,85549,
-  483,85579,    9,85579,    2,85385,    3,85385,  165,85587, 1108,85587,
- 1072,85587,76337,85587, 1011,85587,  483,85596,    9,85596,85111,85586,
-85125,85603,    9,85587, 1011,85606,  483,85587, 1011,85610,80151,85384,
-   17,85615,85111,85385, 1368,85618,    7,85618,    2,85623,    2,85622,
- 1369,85618,    2,85619,85629,85631,    3,85619,85627,85635,85121,85635,
-85217,85635,85621,85635,85133,85635,    2,85618,    7,85646,85635,85649,
-    3,85618,85625,85653,85125,85653,55211,85385,  265,85659,   17,85385,
-    3,80533,73221,85665,    9,85667,78796,85665,    9,85671, 8139,85665,
-53639,85665,42521,85665,85322,85665,    9,85681,55004,85665,85111,85665,
-77751,85686,    9,85689,42613,85664,  483,85693,10291,85664,  483,85697,
-79549,85664,  483,85701,85585,85665,    9,85705,    9,85664, 1369,85709,
-   15,85664,37663,85713,85125,85713,38305,85664,43053,85719,  483,85719,
-   17,85665,  903,85725,35187,85665,77751,85728,    9,85731,    4,85664,
-85125,85735,37663,85735,    5,85664,76939,85741, 1471,85741,   53,85741,
-  253,85741,76285,85741,72567,85741,  241,85741,    9,85755,  483,85755,
-    5,85665, 1505,85761,  922,85761,  918,85761,54597,85760,  903,85761,
-    9,85770,  483,85770,  483,85761,  903,85776,    9,85761,  903,85780,
-77751,85760,    9,85785,79756,85665,    9,85789,84185,85665,   16,85792,
-    7,85792,    4,85797,    4,85796,   17,85792,    4,85793,85803,85805,
-  483,85805,    5,85793,85801,85811,85797,85811,85795,85811,    4,85792,
-    7,85818,85811,85821,    5,85792,85799,85825,54597,85665,   11,85829,
-    5,85828, 1369,85665,    9,85835,18967,85665,    4,85839,  483,85841,
-77751,85665,35187,85844,    9,85847,    9,85845,85111,85851,85111,85844,
-    9,85855,    5,85845,   17,85859,    5,85844,    9,85863,77751,85664,
-  375,85867,79986,80533,  375,85871,    2,80533,80080,85875,80079,85877,
-80298,85875,80319,85881,80293,85875,    4,85884,80319,85887,    4,85885,
-80301,85891,11727,85875,11047,85875,17787,85875,18737,85875,78670,85875,
-77859,85903,10874,85875,77952,85875,77857,85909,    7,85874,83903,85913,
-85167,85875,85355,85875,85213,85875, 1216,85875,77751,85923,77877,85925,
-77751,85922,77857,85929,62310,85875,64483,85875,68896,85875,62464,85875,
-61780,85875,61688,85875,85159,85875,10831,85875,    9,85946,  413,85875,
-77751,85951,77837,85953,77751,85950,77859,85957,74571,85875,17178,85875,
-50959,85875,43400,85875,11177,85875,84077,85875,85913,85971,40675,85875,
-55546,85875,54440,85875,69196,85875,17125,85875,    9,85982,15029,85875,
-65869,85986,52169,85875,49155,85875,40453,85875,43305,85875,40005,85875,
-84767,85875,77751,86001,    9,86003,73994,85875,42613,85874,42795,86009,
-10291,85874,36131,86013,70135,85875,53919,85875,10195,85875,79842,85875,
-79757,85875,  903,86024,63493,85875, 8861,85875,80058,85875,80079,86033,
-54422,85875,11529,85875,54447,85875,52601,85875,  145,85875,35187,86044,
-36096,85875,79601,85875,79549,85874,80501,86053,79719,86053,64396,85875,
-85111,86059, 1011,85875,43215,86062,  241,85875,54295,86066,65869,85875,
-60857,86070,15029,86070,    9,85875,10831,86076,60857,86076,17125,86076,
-84076,85875,  483,86085,  803,85875,60857,86088,  903,85875,53813,86093,
-60857,86092,10107,86093,69877,86093,79757,86092,71229,86092,  265,85875,
-55211,86106,10371,85875,42787,85875,55211,85875,60857,86114,  265,86114,
-38305,85874,46169,86121,80531,86121,72818,85875,   11,85875,43215,86128,
-43316,85875,35187,85875,54295,86134,  145,86134,71229,85875,  903,86140,
-  155,86140,43215,85875,   10,86147,   10,86146,85111,86147, 1011,86146,
-84767,86147,   11,86147,86151,86159,   11,86146,86149,86163,  155,85875,
-71229,86166,    5,85874,55211,86171,64345,86171,84132,86171,36256,86171,
-83903,86171,    9,86180,    9,86171,83903,86184,35187,86184,35187,86171,
-    9,86190,    4,85875,80070,86195,80077,86197,80293,86195,80315,86201,
-80293,86194,80319,86205,  483,86195,83903,86209,80533,86194,    3,86213,
-    7,86195,86215,86217,    2,86217,86213,86221,79987,86194,80079,86225,
-83903,86194,  483,86229,77751,86195,79545,86233,    3,86235,    2,86234,
-86237,86239,    2,86235,    3,86234,86243,86245,77751,86194,79549,86249,
-    3,86251,    2,86250,86253,86255,    2,86251,    3,86250,86259,86261,
-    5,85875,85914,86265,85913,86265,83903,86268,49713,86265,49712,86264,
-86273,86275,49712,86265,49713,86264,86279,86281,53813,86265,64317,86265,
-64815,86265,62077,86265,10107,86265,69877,86265,   17,86265,83903,86297,
-35187,86297,60857,86264,85111,86303,65869,86265,    9,86307,  587,86265,
-60857,86311,83903,86265,85913,86314,79757,85874,79987,86319,    4,86321,
-    5,86320,86323,86325,    5,86321,    4,86320,86329,86331,80336,85875,
-79549,86335,    3,86337,    2,86336,86339,86341,    2,86337,    3,86336,
-86345,86347,83903,85875,   16,86351,    7,86351,86265,86355,    4,86354,
-    4,86355,   17,86351,    4,86351,    7,86364,    5,86351,86361,86369,
-    4,86350,86363,86373,  483,86373,    5,86350,86359,86379,86367,86379,
-86355,86379,86353,86379,54295,85875,  241,86388,35187,86388,60857,85875,
-    7,86395,    4,86396,    4,86397,86265,86397,   16,86395,   17,86395,
-  803,86394,55211,86394,  903,86394,65869,86394,    9,86394,    4,86394,
-86407,86419,    5,86394,86399,86423,86405,86423,85111,86423,    4,86395,
-    7,86430,86423,86433,    5,86395,86401,86437,77751,85875,  413,86440,
-77859,86443,  413,86441,77949,86447, 1216,86440,77857,86451, 1216,86441,
-78669,86455,    4,86441,79757,86459,    3,86461,    2,86460,86463,86465,
-    2,86461,    3,86460,86469,86471,    4,86440,79549,86475,    3,86477,
-    2,86476,86479,86481,    2,86477,    3,86476,86485,86487,79987,85875,
-80244,86491,80245,86491,80151,86491,    5,86496,    5,86497,    4,86491,
-80083,86503,80029,86503,80063,86503,86501,86503,    5,86491,80151,86512,
-    4,86490,80079,86517,86513,86517,86493,86517,86515,86517,86499,86517,
-    5,86490,86495,86529,86503,86529,77751,85874,86529,86535,86503,86536,
-86532,86535,86521,86535,86512,86535,86517,86545,86503,86535,86529,86548,
-86491,86535,    5,86552,86517,86555,    5,86553,86503,86559,85663,86535,
-85100,86535,    9,86535,84767,86566,84767,86535,    9,86570,    5,86535,
-86491,86574,86517,86577,86491,86575,86529,86581,80150,80533,80315,86585,
-80301,86586,80298,86585,80319,86591,80301,86585,80315,86594,80316,86585,
-80325,86585,80293,86585,    4,86602,80319,86605,    4,86603,80301,86609,
-85663,86585,85100,86585,    9,86585,84767,86616,84767,86585,    9,86620,
-    4,86585,80293,86625,80315,86627,80293,86624,80319,86631,    4,80533,
-79968,86635,79967,86637,80498,86635,80519,86641,80497,86635,    2,86644,
-80519,86647,    2,86645,80501,86651,78670,86635,77859,86655,77952,86635,
-77857,86659,    0,86635,21605,86663,  587,86665,    7,86635,  483,86669,
-18967,86671,    0,86634,19917,86675,58930,86675,86673,86675,56555,86675,
-  587,86682,  587,86675,56555,86686,    7,86634,58931,86691,86675,86693,
-86677,86691,86679,86691,19916,86691,86675,86701,86265,86691,86667,86691,
-86689,86691,86685,86691, 1275,86691,18967,86712,86675,86715,18967,86691,
- 1275,86718,86675,86721,29023,86635,25513,86635,24619,86635,84363,86635,
-84723,86635,84471,86635, 1216,86635,77751,86737,77877,86739,77751,86736,
-77857,86743,63610,86635,63291,86635,84321,86635,86028,86635,86030,86635,
-85960,86635,86437,86635,76631,86635,76601,86635,74682,86635, 8974,86635,
-  413,86635,77751,86769,77837,86771,77751,86768,77859,86775,63493,86635,
-  483,86778,85875,86778,29598,86635,25545,86635,59206,86635,15029,86635,
-56555,86790,62942,86635,80030,86635,79987,86635, 1011,86798,74571,86635,
-85875,86802,  483,86802, 8861,86635,85875,86808,  483,86808,79926,86635,
-79967,86815,85875,86635, 8861,86818,63493,86818,74571,86818,79263,86635,
-76816,86635,77387,86829,76500,86635,84185,86833,   11,86833,  903,86635,
-28715,86838,56555,86635,15029,86842,  483,86635,63493,86846,74571,86846,
- 8861,86846, 1011,86635,79987,86854,60857,86854,10073,86635,27855,86635,
-62278,86635,  587,86635,28715,86866,29026,86635,60857,86635, 1011,86872,
- 1347,86872,28715,86635,   11,86879,84185,86879,  903,86878,  587,86878,
- 1347,86635,60857,86888,    2,86634,    4,86893,    7,86895,    3,86634,
-85125,86899,37663,86899,    2,86635,79962,86905,79965,86907,80497,86905,
-80515,86911,80497,86904,80519,86915,79757,86904,79967,86919,71229,86904,
-77387,86923,77751,86905,79065,86927,    5,86929,    4,86928,86931,86933,
-    4,86929,    5,86928,86937,86939,77751,86904,79139,86943,    5,86945,
-    4,86944,86947,86949,    4,86945,    5,86944,86953,86955,    3,86635,
-85217,86959,85121,86959,86897,86959,86217,86959,85133,86959,    6,86959,
-    6,86958,    7,86958,86971,86975,    7,86959,86973,86979,60755,86959,
-35927,86959,38155,86959,37611,86959,71229,86958,84185,86991,   11,86991,
-79987,86634,79757,86997,    2,86999,    3,86998,87001,87003,    3,86999,
-    2,86998,87007,87009,80150,86635,79139,87013,    5,87015,    4,87014,
-87017,87019,    4,87015,    5,87014,87023,87025,84767,86635, 1368,87029,
-    7,87029,    2,87032,    2,87033, 1369,87029,    2,87029,    7,87040,
-    3,87029,87037,87045,    2,87028,87039,87049,    3,87028,87035,87053,
-87043,87053,87031,87053,71229,86635,    7,87061,    2,87062,    2,87063,
- 1368,87061, 1369,87061,    2,87060,77387,87073,87071,87073,    3,87060,
-87065,87079,87069,87079,84185,87079,   11,87079,    2,87061,77373,87089,
-76635,87089,    7,87088,87079,87095,72519,87089,    3,87061,87067,87101,
-85875,87101,77751,86635,  413,87106,77859,87109,  413,87107,77949,87113,
- 1216,87106,77857,87117, 1216,87107,78669,87121,    2,87107,79987,87125,
-    5,87127,    4,87126,87129,87131,    4,87127,    5,87126,87135,87137,
-    2,87106,79139,87141,    5,87143,    4,87142,87145,87147,    4,87143,
-    5,87142,87151,87153,79757,86635,80450,87157,80451,87157,80337,87157,
-    3,87162,    3,87163,    2,87157,79971,87169,79841,87169,79961,87169,
-87167,87169,    3,87157,80337,87178,    2,87156,79967,87183,87179,87183,
-87159,87183,87181,87183,87165,87183,    3,87156,87161,87195,87169,87195,
-77751,86634,87195,87201,87169,87202,87198,87201,87187,87201,87178,87201,
-87183,87211,87169,87201,87195,87214,87157,87201,    3,87218,87183,87221,
-    3,87219,87169,87225,    3,87201,87157,87228,87183,87231,87157,87229,
-87195,87235,80336,80533,80515,87239,80501,87240,80498,87239,80519,87245,
-80501,87239,80515,87248,80516,87239,80525,87239,80497,87239,    2,87256,
-80519,87259,    2,87257,80501,87263,    2,87239,80497,87267,80515,87269,
-80497,87266,80519,87273,77751,80533,79962,87277,    2,87279,79971,87281,
-    2,87278,79967,87285,80070,87277,    4,87289,80083,87291,    4,87288,
-80079,87295,79968,87277,79967,87299,80080,87277,80079,87303,80498,87277,
-80519,87307,80298,87277,80319,87311,80497,87277,    2,87314,80519,87317,
-    2,87315,80501,87321,80293,87277,    4,87324,80319,87327,    4,87325,
-80301,87331,81857,87277,78453,87277,80233,87277,80445,87277, 8453,87277,
-  273,87277,84484,87277,85230,87277,84531,87277,85277,87277,21522,87277,
- 1516,87277,38266,87277,  948,87277,20239,87277, 1477,87277,37095,87277,
-  281,87277,84473,87277, 1011,87370,85215,87277,  903,87374,80242,87277,
-80448,87277,80447,87277,  903,87382,80241,87277, 1011,87386,38057,87277,
-  903,87390,  165,87277,  903,87394,21315,87277, 1011,87398, 1505,87277,
- 1011,87402, 1216,87276,  412,87276,  413,87277,87409,87411, 1217,87277,
-87407,87415,  413,87276, 1216,87277, 1217,87276,87421,87423,  412,87277,
-87419,87427,12377,87277,  375,87277,57522,87277,67028,87277,67800,87277,
-  510,87277,  240,87277,  265,87443,77750,87445,77751,87444,87447,87449,
-77751,87445,77750,87444,87453,87455,  264,87277,84517,87459,85263,87459,
-81749,87459,  341,87459,  264,87276,  375,87469,  241,87277,81464,87472,
-81465,87473,87475,87477,81464,87473,81465,87472,87481,87483, 1011,87277,
-84473,87486,80241,87486, 1505,87486,21315,87486,  903,87277,85215,87496,
-80447,87496,  165,87496,38057,87496,  483,87277,65869,87506,    9,87506,
-    9,87277,56555,87512,  483,87512,56555,87277,    9,87518,65869,87518,
-65869,87277,  483,87524,56555,87524,    5,87277,84185,87531, 1011,87533,
-    2,87531,80532,87536,    3,87531,85215,87541,    3,87530,87539,87545,
-85263,87545,84517,87545,81749,87545,    2,87530,87533,87555,    4,87276,
-87531,87559,    2,87561,    3,87561,    2,87560,87565,87567,    3,87560,
-87563,87571,    3,87277,85111,87575,  903,87577,87559,87575,    0,87581,
-    1,87580,87583,87585,    1,87581,    0,87580,87589,87591,    4,87575,
-80532,87594,    5,87575,84473,87599,    5,87574,87597,87603,84517,87603,
-85263,87603,81749,87603,    4,87574,87577,87613,    2,87276,85663,87617,
-85100,87617,    9,87617,84767,87622,84767,87617,    9,87626,87575,87617,
-    4,87631,    5,87631,    4,87630,87635,87637,    5,87630,87633,87641,
-    2,87277,79962,87645,79965,87647,80497,87645,80515,87651,80497,87644,
-80519,87655,79962,87644,79967,87659,87559,87645,    7,87663,    6,87662,
-87665,87667,    6,87663,    7,87662,87671,87673,    4,87645, 1011,87677,
-77751,87679,77750,87678,87681,87683,77750,87679,77751,87678,87687,87689,
-    4,87644,  265,87693,77750,87695,77751,87694,87697,87699,77751,87695,
-77750,87694,87703,87705,    3,87276,  375,87709,87645,87709,    4,87713,
-    5,87713,    4,87712,87717,87719,    5,87712,87715,87723,    4,87277,
-80070,87727,80077,87729,80293,87727,80315,87733,80293,87726,80319,87737,
-80070,87726,80079,87741,    2,87727,  903,87745,77751,87747,77750,87746,
-87749,87751,77750,87747,77751,87746,87755,87757,    2,87726,  265,87761,
-77750,87763,77751,87762,87765,87767,77751,87763,77750,87762,87771,87773,
-    5,87276,87575,87777,    7,87779,    6,87778,87781,87783,    6,87779,
-    7,87778,87787,87789,87645,87777,    0,87793,    1,87792,87795,87797,
-    1,87793,    0,87792,87801,87803,87727,87777,    2,87807,    3,87807,
-    2,87806,87811,87813,    3,87806,87809,87817
-};
-
-const int s_nDataSize2 = 24772;
-unsigned int s_Data2[24772] = {
-    3,    9,    5,    6,  119,  796,  636,  113,  449,  235,  239,  105,
-  789,   96,  439,  624,  630,  230,  111,  110,  787,  786,  628,  627,
-  116,  115,  436,  435,  227,  226,   93,   92,  792,  791,  100,   99,
-  443,  442,  633,  632,  128,  183,  234,  178,  233,   85,  762,  203,
-   32,  742,  356,  169,  152,   12,  672,  741,  127,  168,  671,  740,
-   50,  352,  149,   64,  414,  197,  276,  751,  722,  396,  275,  434,
-  721,  785,  274,  795,  720,  448,  273,  719,  474,  758,  718,  392,
-  269,  748,  715,  400,  118,  794,  635,   81,   76,  750,  747,  597,
-  595,   91,  433,  225,   74,  745,  680,  565,  268,  476,  271,  761,
-  350,  678,  345,  567,  757,  471,  470,  563,  469,  561,  551,  461,
-  465,  706,  650,  714,  261,  332,  641,  708,  676,  542,  260,  458,
-  755,  314,  325,  658,  288,  349,  760,  654,  656,  564,  562,  644,
-  552,  642,  550,  259,  252,  254,  322,  311,  329,  109,  784,  626,
-   43,  395,  182,   55,  399,  186,  104,  447,  238,   41,  389,  173,
-  175,  193,  485,  580,  579,  734,   25,  733,  528,  548,  310,  546,
-  344,  526,  308,  560,  342,  525,  556,  558,  523,  524,  522,  520,
-  307,  622,  623,  431,  618,  620,  429,  617,  305,  615,  519,  518,
-  516,  778,  304,  250,  302,  776,  216,  218,  774,  215,  301,  300,
-  514,  771,  513,  541,  298,  512,  297,  535,  321,  508,  510,  319,
-  538,  539,  533,  507,  509,  296,  146,  705,  531,  537,  317,  557,
-  341,  143,  697,  555,  544,  339,  613,  426,  217,  773,  619,  428,
-  221,  780,  611,  610,  424,  609,  769,  423,  422,  768,  213,  625,
-  783,  670,  732,  782,  578,  577,  731,  484,  387,  668,  669,  171,
-  172,  375,  191,  575,  729,  482,  446,  667,  237,  574,  728,  481,
-  398,  666,  185,  573,  727,  480,  394,  665,  181,  572,  695,  694,
-  140,  738,  372,  246,  690,  689,  136,  244,  369,  767,  212,  766,
-  702,  701,  367,  257,  700,  315,  726,  382,   59,  407,  190,   52,
-  366,  157,   65,  417,  201,   63,  413,  194,  686,  692,  243,  248,
-  699,  256,  150,  354,  365,  364,  353,  156,  685,  348,  242,  661,
-  192,  409,  376,  378,  411,  164,  569,  717,  473,  391,  660,  177,
-  189,  406,  374,  371,  405,  162,  200,  416,  363,  362,  415,  155,
-  313,  324,  361,  360,  331,  312,  328,  381,  316,  330,  359,  323,
- 4596,24359,41366,41344, 4857,37718, 4594,24357, 4846,37706, 4678,26650,
- 4592,24355, 4844,37704, 4591,24354, 4843,37703, 8816,41900,22056,15422,
- 7473, 8464,42932, 8814,41898, 6804,20483,12853, 8462,42930, 8809,42808,
-21978,15306, 7385, 8456,42895, 8807,41327,21965,15246,15293, 7372, 8454,
-42893, 3212,20457,36983, 3516, 6187, 6184,20453,29352,10563,10421, 2593,
-20452, 6183, 5637, 2589, 6182, 2645, 2619, 2283,26212,20199, 2269,12513,
- 2614, 2661,18113, 2288, 4777,35226, 4775, 4774, 4773,42536, 2198,32674,
-32753, 8833, 8780,40027,43084,39938,43445, 8548, 8831,24157,26148,31156,
-29057, 8503, 8771, 8777,24156,26147,36425,33823,40025,43073,43081,39936,
-43443,22500,18803, 8829, 8770,40023,43072,39934,43438, 8546, 8827,24155,
-26146,31154,29044, 8501, 8765,24153,26140,36424,33800,33820,40022,43066,
-39933,43435,22498,18801,43065,40020,43434,39931,18800,22493, 8764, 8499,
-26128,24151,33799,36411, 8826, 8544,26120,24146,29025,31141, 8762, 8824,
-43063,40019,43432,39929, 2287, 2286,21235,26865,13688,26627,13207,20826,
- 2106, 2073, 4667, 4378, 1966, 4054,13206,20825, 2159, 2168,18699,39853,
-10355,39675, 2167,39852,13205,18520, 2158,39674,20824,20823,42653,42280,
-18519,10116,21390,13926, 2032,42279, 1932,42652, 2166, 2157,42651, 5184,
-42278, 5035, 2070,21389,20822, 4377,13925,13204, 5034, 5183,13924,21388,
- 5033, 5182,39673,42650,39851,42277, 4221, 5142,18518,21387,18698,20821,
- 4220, 4982,10115,13923,10354,13203,39850,42276,39672,42649,20820,18697,
-42648,39671,42275,39849,18517,21386, 4376, 5032,13202,10353,13922,10114,
- 4375, 5181,20819,18696,21385,18516, 4981, 5141,42274,39848,42647,39670,
- 5031, 5180,42646, 5140,42273, 4980, 4219,21384,20818, 4374,13921,13201,
- 5135, 5174,39653,42257,39831,42630, 5172, 5133,24141,26112,31138,29023,
- 5026, 4969, 4975,24140,26111,36408,33796,39651,42249,42254,39829,42628,
-21363,18686, 5139, 5179,39669,42272,39847,42645, 5178, 5138,18515,20817,
-18695,21383, 5030, 4979,10113,13200,10352,13920,39668,42271,39846,42644,
-21382,18694, 5170,24183, 5169,36516, 5168,39992, 5167,22753, 5166,21404,
- 5165,39867, 5164,21361, 4045,26846, 4044,21215, 5162,39827, 5191,21359,
- 5190,39825, 5189, 5160, 5159, 4043, 5157, 5024, 1891,42248, 1847,42621,
- 4193, 4341,18472,20750, 1681,21357,10093,13145,13869, 2660, 7371, 2659,
- 2658,13144,20749, 1846, 1890,39824,18682,39649,10344, 1872,39823,18507,
-13143, 1889,39648,20748,20747,42620,42247,10107,18506,21356,13868, 1871,
-42246, 1843,42619, 2205,26240,26211, 2200,24249,24232, 2478, 2517,36625,
-34562,31491,29570, 2507, 2558,34076,37229,29433,31635, 8704, 8600,35491,
-38460,30352,32396,28999, 8171, 8335,38314,35364,32268,30297,30134, 8698,
- 8591,35488,38453,30345,32384,32389, 8166, 8333,38305,35357,32255,30292,
- 2285, 7325, 1898,14098, 1896, 1895, 1894,39359,24288,41706,41800,20017,
-37217,39357,36575,18022,26236,20013,24246,39355,39925,18013,18779,20001,
-22482,39395,20196,39397,20208,40017,39923,20064,42324,12370,42658,19065,
-18776,41387,41382, 9904,21392,10687,10412,41365,41360,18055,18053,39685,
-20893,39857,18775,43056,43431,42334,18524,42660,22479,40016,39922,14502,
-15946,39376,39374,20062,20060,21649,22478,39380,39378,12368,18702,43055,
-43430,18057,39680, 9906,39855,39991,21351,22752,39816,39990,39815,22751,
-21350,39639,39814,33754,42230,28989,42602,18468,18677,24118,26056,31087,
-28988,10090,10312,10318,24117,26055,36340,33753,39637,20700,20705,39812,
-18675,42228,42600,42219,42225,18464,42598,21348,39635,39810,13101,13106,
-13844,26054,24116,33752,36339,20699,21346,26053,24115,28987,31086,42218,
-42595,36338,39633,31085,39808,39667,39845,39666,39844,39665,39843,18693,
-18692,10351,10350,18514,39842,13199,13198,10112,39664,20816,20815,10111,
-18513,42270,42643,13919,21381,13918,42269,21380,42642,39806,21403,21344,
-39866,39805,39865,21343,21402,39804,21342,21175,26830,39802,21173,26826,
-21340,39346,24061,39338,32626,39333, 9843,39332,39331, 9814,39328,15936,
-39183,11746,19744,25614,39182,39181,39180,19836,42268,11903,42641,17932,
-17931,40961,40960, 9771,21379, 9770, 9769,40959,40958,17930,17929,39663,
-20814,39841,17928,40957,40956,42267,18512,42640,19835,39179,39178,11902,
-11901,39177,39176,19834,19833,19832,19831,39175,39174,11900,18691,40955,
-40954,17927,39662, 9768,39840,39173,19830,11899,17926,40953,13197, 9767,
-40952,20813, 9766,17925,40951,11898,19829,39172,11897,42266,19828,19827,
-42639,11896,40950,21378,13917,39171,39170,39169,39168,14088, 3310, 3309,
-35263, 2276,26305, 5245, 6267, 5248, 5445,10636,10624, 5401, 7751, 5390,
- 5674, 2548, 5410, 3350, 3931, 3971, 3960, 6123,28071,22800, 8025,27598,
-16338, 7478,22061,15427, 3847, 3840, 3822, 5835,26825,21172, 7148,26571,
-13617, 6808,20693,13100, 3469, 3729, 3618, 6021,27993,22666, 7965,27534,
-16152,16158, 7368,21963,15285,15291, 3513, 3757, 3655, 6026,28010,22688,
- 7970,27539,16193, 7376,21969,15297, 3722, 3611,27986,22657,22659,16147,
- 3608, 3610,25575,25569,25573,25568, 2720, 2722,23945,23941,23943,23940,
- 3606,26233,26200, 2718,24244,24224, 3603,22654,16143, 2716,22466,15931,
- 8720, 2547, 2499, 2498,35234, 8719,35524, 7050,35233, 6181,20028, 5622,
-20027, 5610, 7023,23939,24648,23938,24484, 5952, 7920,22462,25567,27390,
-15928,25566,27757, 5620, 7027,36388,33781,31116,29009, 5970, 7936,33795,
-36407,29022,31137, 5612, 7025,24121,24653,24129,24494, 5960, 7922,26081,
-27412,26074,27796, 5601, 7014, 6501, 5946,27753,22458, 7917,27387,15926,
- 4317, 7284,21850,15156, 5825, 5940, 5824, 5794, 7123, 6732, 6038,28015,
-22709, 7982,27551,16225, 7395,21983,15311, 8718, 5673, 7049, 8717,35523,
-23937,21560,14272,15352,40871,22739,16272,23936,22733,16263,14776,40870,
-21558,14265,23935,21474,14087,15148,40869,22445,15906,23934,41714,40868,
-34075,23933,34079,40867,41730,23932,41537,31827,37396,23931,41448, 4494,
-23930,41503,23929,26451,38349,32305,23928,24323,23927,40866,31785,37351,
-23925,40858, 4472,23924,40862,23923,40853,38197,23920,23919,38475,23914,
-23913,38152,23908,40840,28843,38481,23905,23904,23903,23902,23901,23900,
-23899,23898,23897,23896,40839,40838,23895,23894,40837,40836,23893,40835,
-23892,23891,40834,40833,23890,40832,23889,23888,40831,40830,23887,40829,
-23886,23885,40828,40827,23884,23882,40823,40826,40822,23879,23878,40819,
-40818,23877,23876,23922,23875,23874,32490,32499,23873,23872,32793,23871,
-17197,23870,23869,29043,33819,24320,40817,29655,38507,24317,24309,28839,
-33590,23867,23868,23865,40816,25558,25555,23866,40815,23860,23864,21472,
-14085,40814,22439,15900,25548,23863,40812,23859,23856,40811,40805,40808,
-23858,33581,33583,23854,23881,33580,33592,23853,23852,19635,33579,40804,
-23848,23844,33560,33558,35258,40795,23843,33557,33556,35255,25392,23842,
-33555,33554,23841,24131,24133,23789,17857,23787,18134,25390,26230,23785,
-25387,26229,26199,23783,23782,23781,23780,23779,23778,24120,24128,23777,
-17845,23775,27731,25366,18759,23762,23761,23760,23759,23758,23757,23851,
-23847,40801,40803,23850,33457,33578,35260,23849,33572,23756,33456,23755,
-25328,18750,10402,24219,24218,24217,24239,41600,41620,24216,24215,24238,
-29171,33958,24221,24241,24214,24237,24213,24236,24223,24243,24231,24248,
-24235,24212,41619,41599,24580,24740,24486,24650,24479,24643,24493,24652,
-24536,24696,24535,24695,24534,24694,24533,24693,24640,40701,30096,38438,
-24638,24477,35149,24692,24532,24054,24053,24052,24051,24050,23803,17878,
-23801,25476,23799,23798,23797,33549, 3281, 2981,35267, 2427, 2429, 2425,
- 2424, 2495, 7047, 7649, 2423,21521,14156, 2422,35247,23754,40705,23741,
-40684,40700,23725, 4338,40674,23724,40673, 7842, 7748, 7750, 7746, 7745,
- 7744, 7761, 7758, 7769, 7651, 7653, 7648, 7647, 7646, 7645,21520,14155,
- 6300,21670,14601, 7644,35246, 8354,35392, 7811, 7809, 7813,37284,31745,
- 7771,36483,31210, 7788, 7802,36473,31194, 4186, 4465, 4184,13064, 4181,
- 4180, 4236, 4246,23721,39799,39630,23720,18459,23719,10083,18671,39628,
-33435,13819,10309,39797,28701,21329,36039,30815,42588,42206,25299,25298,
-13062,42586,20667,20672,42197,42203,23718,21332,13824,33434,42590,28700,
-42208,30814,36038,25297,20676,13069,39022,22404,15866,17830,43413,13837,
- 9689,43025,21338, 9687,17828,40683,11384,19518,39000,11387,42593,21639,
-19521,42214,14460,40699,20689,13087,24049,24531,24691, 4190,23717,22449,
-15912,25296,20692,13099,23753,22427,15895,25337,20666,13060,23716,22403,
-15865,25288,20665,13059,13584, 4199, 4197,23711,19508,11363,25282,20745,
-13140, 9063, 9396, 9184, 9168, 9338,38785,32799, 9254,23359,17393, 9336,
-38782,32791, 9247,23353,17357, 9344,38793,32809, 9282,23387,17431, 9456,
-38858,32878, 9094,23244,17141,23710,21540,14212,15278,40657,22649,16130,
- 2758,21538,14208, 3347, 5771, 1853, 5082, 1788, 4966,42481,42234, 1708,
-26963,42233,26591,42480, 1852, 3346, 3345,42479,37847, 1851,37846, 1835,
-13635,42478,42232,37845,26590, 1785,10346, 1834,35043, 1833,37844,13634,
- 6891,27206, 6890,42477, 6889,37843, 5951, 5949,22464,27759, 5930, 5929,
-22774,28067, 5928, 5927,20495,26455, 5926, 5925,26249,26192, 5924,26307,
- 5934, 5932,27724,22402, 5923, 6119, 5922, 7262,27717, 5920, 6917, 6277,
- 5918, 5917, 5916, 5915, 5914, 5954, 6118, 6927,27234, 6888,42759,27205,
-29027,43024,42739, 8746,29048, 8768,43069, 6886, 6887,27204,42738,28699,
-43023, 8745, 8742,43021, 8741,43020, 8740,43019, 8784,43196, 8739,43018,
- 8767,43068, 8523, 8744, 4957,42196, 5672,42195, 4956,42194,24230,42193,
-33939,33938,24127,42192,33769,35199,24492,42191,35198,33768,24688,20662,
-24528,20661,24048,41181, 4990, 4842,42304,37700, 5671, 5670,42303,37699,
- 2546, 2545,37881,42519, 5669, 5668,37880,42518, 2544, 5667, 5666, 4137,
- 5106, 5104, 5072, 5070, 5074, 5076, 5068, 5067, 5066, 5065, 5064, 5063,
- 5100, 5096, 5095, 5094, 5084, 5062, 4634, 5061,42190,28698,42457,26562,
- 4635, 5091,42302,26982,42517,26626, 4666, 5090,37879, 4989,13687,42301,
-42516,37878,26981, 4665,10365, 4136,35060, 5089,42515, 4988,26625,42300,
-42514,26624,26980, 4664,42299, 4135,26979, 5088, 4134, 4987, 4663,42298,
-42513, 2163,37877,13686, 2162,42512, 2150,26623,37876,10364,35059,13685,
- 2161,42297, 2142,37875, 2140,42511, 2149,42296, 5087, 4986, 1917,26978,
-42295,26622,42510, 2148, 4848, 4862, 4827, 4826, 4841,37698, 4882,13463,
-42509,42294,37697,26621, 4840,10189, 4881,34876, 4839,37696, 4880,13462,
-37874,13684, 5086,37695, 4985,13461,42293,42508,37694,26977, 4838,10188,
- 4879,34875,23729,34834,40698,40656,23709,34880,40655,41381,24211,34827,
-41560,41559, 4874,34826, 4876,34861, 4892,34905, 4878,37693,13460, 4898,
-37778,13508, 8353,35391, 8390,35436, 8581, 8534, 8602,38462, 8683,38525,
-15448, 8641,38478, 8579,15277,38435,15138,33431,16652,33730,33429,34560,
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-34823,15691,34863,22242,24181,15690,15886,20714,13547,40796,35139,33827,
-33803,15828,15687,41794,13546,42222,13545,13544,13587,16239,34799,16238,
-33082,13543,13578,42408,37794,37816,42445,13657,42127,13656,13655,13654,
-42398,37782,13764,42369,17675,42368,13763,42367,13761,17674,13760,15683,
-13728,13727,13542,13541,13540,42497,13539,37859,13538,42282,13537,13536,
-37678,13535,40973,36194,13534,15680,14206,14568,14122,13667,13586,20550,
-13585,11809,11819,11779,11817,12121,11775,11797, 9551,34857,33081,33079,
- 1870,10340, 1763,21210, 1607,32011, 1803,35041,30536,30534,19291,31901,
-17673,29870,28404,28402, 1820,37989, 1577,29932, 1748,18661, 1887,13864,
-35765,35763,10964,37629, 9549,34854,33077,33074, 1867,10337, 1760,21207,
- 1604,32008, 1800,35038,30532,30529,19289,31898,17671,29867,28400,28397,
- 1817,37986, 1574,29929, 1745,18658, 1884,13861,35761,35758,10962,37626,
- 9546,33071,33068,33066,19054,18717,14385,19286,38275,38056,30331,33064,
-30526,30524,19282,30522,17667,28391,28388,28386,32215,35749,35477,35586,
-10674,17664,21625,22234,35746,35744,10957,35742, 9542,33055,33053,33050,
-19051,18714,14382,19279,38272,38053,30328,33047,30516,30513,19277,30510,
-17661,28384,28382,28379,32212,35739,35474,35583,10671,17657,21622,22231,
-35737,35734,10955,35731,17797,34167,33045,33043,36731,34323,33345,31399,
-18340,31381,19447,34342,35958,30508,19267,31584,17649,29534,33325,28371,
-17808,36906,20409,29311,35939,29295,34185,36925,35717,35715,19461,36750,
-17796,34166,33029,33027,36730,34322,33344,31398,18339,31380,19446,34341,
-35957,30500,19259,31583,17641,29533,33324,28368,17807,36905,20408,29310,
-35938,29294,34184,36924,35713,35711,19460,36749,43358,33025,33022,33020,
- 7205,40213, 6413,24632, 7559,39912, 6227,33018,42727,30498,27180,30496,
-24775,28366,40212,28363, 7556,35709, 6226,43355, 7202,27333, 6412,42724,
-35706,35704,39911,35702,43361,33015,33058,33061, 7208,40209, 6409,24630,
- 7562,39908, 6223,33013,42730,30519,27183,30493,24778,28361,40216,28394,
- 7555,35699, 6230,43354, 7201,27332, 6416,42723,35755,35752,39915,35697,
-17638,10331,34848,35032,30491, 1811,33011, 1568, 9531, 1739,19256, 1878,
-35695,32002,21053,21201,18613,18652,33008,29923,17635, 1861,10944, 1754,
-35692, 1598,28359, 1794,37620,37980,19253,13855,17632,34202,33647,33633,
-36770,34359,33005,31436,18359,31419,19250,34375,35689,30992,19768,31615,
-17920,29549,33004,28918,17631,36945,20439,29346,35688,29330,34219,36962,
-36230,36193,19249,36789,17630,33377,33646,33632,36229,33003,30991,17919,
-30769,19248,35687,19767,28655,28917,35994,36192,17889,10746,35613,35557,
-30927, 8803,33565, 5749, 9746, 8073,19628, 8560,36125,32295,22558,21685,
-18903,19091,33570,30376,17895, 8844,11544, 6969,36132, 6014,28802, 8448,
-38196,38333,19633,14689,17888,10745,35612,35556,30926, 8802,33564, 5748,
- 9745, 8072,19627, 8559,36124,32294,22557,21684,18902,19090,33569,30375,
-17894, 8843,11543, 6968,36131, 6013,28801, 8447,38195,38332,19632,14688,
-17887,17628,35611,35555,30925,30488,33563,33001, 9744, 9528,19626,19246,
-36123,35685,22556,21683,18901,19089,33568,32999,17893,17626,11542,10941,
-36130,35683,28800,28356,38194,38331,19631,19244,39563,10143,34967,34798,
-30660,42077,33233,26992,33856,42320,31186,31181,39684,31861,24419,21003,
-26998,18587,42331,29831,29068,29085,36449,39689,35890,24423,28540,39559,
-37950,37553,42072,13360,33862,18638,33197,33201,35065,37723,32038,34797,
-31175,18619,33846,21002,30630,37949,31192,19345,29074,17746,28509,34966,
-36467,18586,29079,21066,29936,37552,38021,34889,35855,35859,36462,21109,
-33210,18637,33451,33444,35020,37608,31979,34796,30643,18604,33205,21001,
-30835,37948,30639,19516,28522,17835,28711,34965,35868,18585,28517,21046,
-29911,37551,37970,34832,36049,36060,35864,21108,18010,35175,33221,33215,
-31081,18584,33736,21859,37947,37550,29904,35353,36327,30648,19351,32120,
-17752,30423,33747,28527,31920,38450,34964,34795,36337,18946,28984,21000,
-35874,35879,19988,38641,17823,18358,28697,29563,30809,31435,33401,34358,
-38685,38468,31614,31418,36017,36769,11343,12750, 9663,10013,33421,34218,
-32162,32425,36788,36944,36033,36961,28685,29329,30799,31601,19492,20438,
-17822,18357,28696,29562,30808,31434,33400,34357,38467,38684,31613,31417,
-36016,36768,11342,12749, 9662,10012,33420,34217,32424,32161,36787,36943,
-36032,36960,28684,29328,30798,31600,19491,20437,17821,18356,33685,33684,
-30807,31433,33399,34356,36258,36257,31612,31416,36015,36767,19976,19975,
-17962,17961,33419,34216,31042,31041,36786,36942,36031,36959,28683,29327,
-36265,36264,19490,20436,10003,34321,34165,34340,17795,32160,11309,35238,
-35956,35937,28636,34183,31582,38466,20424,31397,18329,29293,29532,35383,
-30747,36729,33323,33343, 9657,38683,19459,30427,36748,36904,12740,36923,
-10002,34320,34164,34339,17794,32423,11308,35382,35955,35936,28635,34182,
-31581,38682,20423,31396,18328,29292,29531,35237,30746,36728,33322,33342,
- 9656,38465,19458,30305,36747,36903,12739,36922,33683,34319,34163,34338,
-17793,31040,19974,33715,35954,35935,33682,34181,31580,36256,31048,31395,
-28956,29291,29530,33714,36263,36727,33321,33341,17960,36255,19457,28928,
-36746,36902,36262,36921,43340,17624,32997,32995, 7188,40208, 6408,32993,
- 7542,39907, 6222,24772,42710,35681,27167,19242,24766,17621,40196,32990,
- 7554,27177, 6210,43353, 7200,35678, 6396,42722,35675,35673,39895,19240,
-34525,23507,32987, 7309,32975, 7308,24977,23337,17054,17288,23183,40340,
-24975,23336,17053,17287,23182,40338,40336,23181,17052,24973,23335,17286,
-38810,32821,40605,39392,25222,38772,40603,39389,25224,32726,38771,32725,
-40601,40599,23180,39383,17051,39386,25220,25218,23334,24199,17285,24192,
-25279,25281,38770,38769,38961,32820,32724,32723,38959,38809,40652,40654,
-38955,38957,41224,17050,25995,23333,41226,23179,25993,17284,23681,23679,
-32973,39048,40641,13960,23505,13952,23503,13969,23500,23498,39722,23496,
-39746,23493,39745,40067,31682,40070,31685,40072,31687,40066,31681,40065,
-31680,40055,31673,39721, 9923,39744, 9934,39743, 9933,16510,32971, 2826,
-28343, 2824,40334,40332,40331,40329,40327,40325,40323,40321, 6294,22565,
-16042, 6271,22626,16092, 4266,22625,16091,10919,19223, 6624,10911,24964,
- 7087,19217,24960, 5724, 2709, 3037, 3181, 4265,22622,16089, 4298,22620,
-16087, 7349,21949,15271, 7347,21947,15269, 7345,21945,15267, 3206, 5752,
-10899,17800,34171,33121,33125,36735,34327,33348,31403,18344,31385,19450,
-34346,35961,30552,19305,31588,17694,29538,33328,28443,17811,36910,20413,
-29315,35942,29299,34189,36929,35807,35803,19464,36754,17799,34170,33120,
-33124,36734,34326,33347,31402,18343,31384,19449,34345,35960,30551,19304,
-31587,17693,29537,33327,28442,17810,36909,20412,29314,35941,29298,34188,
-36928,35806,35802,19463,36753,18636,34169,33119,33123,36733,34325,34794,
-31401,18342,31383,20999,34344,37946,30550,19303,31586,17692,29536,34963,
-28441,18583,36908,20411,29313,37549,29297,34187,36927,35805,35801,21107,
-36752,34520,23692,17727,34206,33644,33630,36773,34362,33170,31439,18362,
-31423,19328,34379,35834,30989,19765,31619,17917,29553,33166,28915,17723,
-36949,20442,29350,35830,29333,34222,36965,36227,36190,19324,36793,17726,
-34205,33423,33403,37945,34793,33169,31860,18635,31422,19327,34378,35833,
-30811,19494,31618,17825,29552,33165,28687,17722,36948,21106,29349,35829,
-29830,34962,37548,36019,36035,19323,36792,17725,34204,34961,34792,36772,
-34361,33168,31438,18361,31421,19326,34377,35832,31859,21105,31617,18634,
-29551,33164,29829,17721,36947,20441,29348,35828,29332,34221,36964,37944,
-37547,19322,36791,17719,33381,33643,33629,36226,33162,30988,17916,30773,
-19320,35826,19764,28659,28914,35998,36189,17718,33380,33494,33506,37943,
-34791,33161,31858,18633,30772,19319,33379,35825,30915,19588,30771,17875,
-28658,33160,28758,17717,35997,21104,28657,35824,29828,34960,37546,36106,
-36096,19318,35996,34201,17619,33398,33418,34790,37942,31857,32969,31415,
-18632,34374,19209,30806,35662,31611,19489,29548,17820,28682,32964,36941,
-17615,29345,21103,29827,35647,37538,34959,36030,36014,36785,19204,38965,
-38827,38964,38402,38963,38394,30483,30481,30479,30197,30173,30172,37558,
-37533,33232,26991,33855,42319,26997,31853,42071,34785,30663,10141,42330,
-20996,31185,37937,30659,42076,28539,39558,29067,34954,39683,18580,28536,
-13358,39562,37532,24418,29823,36448,39688,35889,24422,37708,37640,36827,
-41765,29940,37091,37531,38132,37530,29954,29939,29952,29938,18047,17687,
-18179,17690,37648,36442,36300,26727,26710,26725,26709,36053,36296,36454,
- 8812, 5812, 8435, 8792, 4905,43814,43311,43002,43286,42582,42845,42928,
-42841,17738,17994,17736,17882,37784,37852,36298,36308,42834,26708,42866,
-42924,42836,41896, 4061, 5984, 5996, 3392, 6655, 3665, 5991, 2355,11822,
-11824,12297,12293,41271,41244, 9823, 9825,28555,30678,23629,25170,28972,
-31072,24113,26051,28716,30818,23740,25326,28544,30669,23602,25142, 9678,
- 9673,12176,11804, 6292,22567,16044,14145,14590, 2539, 5657,14143,14588,
-14164,14610, 2549, 5675, 1621, 5475, 1922, 5500, 3097, 5374, 5384, 3103,
- 1927, 5218, 5216, 1912, 5230, 1907, 5228, 1909, 1924, 5240, 1920, 5242,
- 5251, 1915,16600,16633,10970,11111,10966,11285,11116,12195,12208,11050,
-24332,28819,28826,30947,37995,11048,37653,24461,38605,24787,38432,11046,
-28807,30934,11044,43887,43853,43884,43850,43879,43845,43876,43842,14147,
-14592,11113,12199,17610,19104,17607,19103,35640,28333, 8578, 8135, 4818,
- 4785, 8230, 8669, 8667, 8228, 8584, 8161, 8176, 8596, 8576, 8133, 6923,
- 6164,36294, 8790,36293, 6921, 6162, 6901, 6157, 4816, 4783, 8178, 8598,
- 6925, 6166, 8586, 8163, 6903, 6159,24751,12788,39418,38649,38634,36069,
-38630,37529,39997,39585,40148,40037,40013,40113,39995,39678,40109,39587,
-39677,39544,39583,40111,39582,38677,35816,35815,38676,38692,38648,32845,
-30554,32330,30665,31742,31199,32322,32317,10868,10865,28325,28322,28318,
-28315,18253,11572,11569,37502,37165,35655,35652,35793,36302,36292,18631,
-34162,32968,32963,36726,34318,34789,31394,18338,31379,20998,34337,37941,
-30485,19208,31579,17614,29529,34958,28341,18582,36901,20407,29309,37537,
-29290,34180,36920,35646,35661,21102,36745,18630,18355,32967,32962,31856,
-31432,34788,34355,34200,34373,31610,31414,37940,36766,19207,19203,17613,
-17618,34957,34215,29547,29344,36784,36940,37536,36958,29826,29326,35645,
-35660,21101,20435,18629,17873,32966,32961,31855,30913,34787,33504,33376,
-33375,30768,30767,37939,36104,19206,19202,17612,17617,34956,33492,28654,
-28653,35993,35992,37535,36094,29825,28756,35644,35659,21100,19586,35799,
- 9353, 9466, 9351, 8511, 8467, 9356, 9355,38382,28878,28873,28860,28855,
-36282,36277,35797,18255,27821, 2597,18244,18243, 2456, 2596,18258,20185,
-18251,18250,18248, 2639,37181,37178,37131,37164,37190,37163,37162,37161,
- 2628, 2484,37160,37130,37159,37189,37158,37107,35671,28353,30196,28348,
-30171,28352,28351,30211,28330,32980,32985,32978,32983,28346,28350,28329,
-32887,32733,36647,36641,39425,39436,39434,17467,17466,17465,11252,11231,
-11249,11228,28577,30701,28571,30695,17464,36512,36527,32681,33885, 2803,
-29143, 2801,33883, 2815,29141, 2814,17283,36510,23099, 8940,16953, 8939,
-24190,24197,17374,36514,23332, 9222,17282, 9221,24186,24195,16899,36509,
-17342,36508,16716,36507,23331, 9220,17281, 9219,23513,23515,16898,35774,
-16770,35773,35812,32912, 9413, 9412,38826,38825,32843,32842,36520,32749,
-36525,32722,36524,32765, 9315, 9314,38768,38767,32721,32720,36523,32902,
-36522,32643,11922,11919,17550,32854,17500,32826,17196,32891,17326,32918,
-14566,13036,13033,13045, 9827,20640,20632, 5980,21627, 6232,20630, 4294,
-28502,30618, 3072, 3390, 3308, 3501, 3294, 3479, 3296, 3485, 3291, 3474,
-24393,42188,24390,42185,10400,38621,10397,38618,38600,37957,38597,37954,
- 3369, 3053, 2347, 2474, 2341, 2468, 3497, 3306, 3387, 3070, 3372, 3056,
- 3462, 3288, 3460, 3286, 3367, 3051, 6898, 5577, 6896, 5575, 6912, 5608,
- 3262,38172,27114, 3033,38221,27106, 3031, 2490,38144,27081, 2488, 9523,
-38143,27080, 9895, 3361, 3413, 3411, 2340, 2338,19193,20045, 3436,16188,
- 7760,16186,16190,16166, 7755,27548, 7979,27546, 7977,27554, 7985,27371,
- 7905,27369, 7903,10218,34894,29094,29104,23572,40849,33705,33700, 5477,
- 3365, 5504, 2343, 5409, 3495, 5442, 3385, 5436, 3375, 5376, 3454, 5430,
- 3363, 5327, 2345, 5283, 2367,32622,30556,30756,31026,32607,30558,30783,
-30872,30884, 6085, 1558, 5512, 1532, 5502, 1551, 6098, 1541,16642,32605,
-32620,16677,16631,16675,14167,14613,10974,10972, 5387, 3106,12007,12006,
-19884,19883,27888,27479,25821,25820,22532,21907,15995,15226,13355,13354,
-20992,20991,27887,27478,16175,22682, 3640,22681, 3639,28006, 3745,36150,
-14722,16168,31028,14779,14262, 5486, 3092,14788,14271, 5514, 2300,14739,
-14218, 5444, 3337, 3130, 5407,14202,14718, 3108, 5389,14190,14695, 3105,
- 5386,14188,14693,14733,14211, 5433, 3328, 3090, 5367,14184,14674, 2302,
- 5285,14115,14519, 2320, 5325,14137,14582,10976,10978, 2315, 5308,14118,
-14556,12287,16679,12187,12185,12167,12213,12211,12145,12210,12220,12171,
-12005,19882,25918,25819,19938,12144,13353,20990,25795,12218,12143,11787,
-16647,11802,11800,11791,11789,12169,12012,11287,12142,12004,11785,11783,
-32625,32624,16645,11772,16644,11535,11333,11771,11770,11769,11768,37781,
-39432,42704,17745,19044,28513,30325,30629,32526,33196,35580,33861,33845,
-31191,31174,35858,38269,11123,14378, 9612,10668,33200,35471,29073,29078,
-36461,36466,35854,38050,28508,30067,30634,32209,19344,21619,17744,37488,
-28512,29885,30628,32037,33195,35064,33860,33844,31190,37929,35857,37722,
-11122,29816, 9611,31846,33199,34888,29072,34947,36460,36465,35853,38020,
-28507,29935,30633,31908,19343,34770,42124,18618,28511,29884,30627,39579,
-33194,35063,33859,39542,31189,31173,41965,37721,26764,13467,24372,10194,
-39541,34887,29071,29077,36459,41964,35852,38019,28506,42123,30632,31907,
-39578,21065,35579,33450,33204,33209,10667, 9684,21618,19515,32208,30827,
-35470,33443,30642,30638,32525,30834,30066,28710,28516,28521,38268,36059,
-30324,28721,19043,17834,14377,11391,35867,35863,38049,36048,35019,33449,
-33203,33208,31845, 9683,34769,19514,31883,30826,34831,33442,37928,30637,
-31978,30833,29910,28709,34946,28520,37607,36058,29852,28720,37487,17833,
-29815,11390,35866,35862,37969,36047,35018,33448,39540,33207,10162,24371,
-21045,39577,31882,30825,34830,39539,30641,30636,39576,30832,42122,28708,
-28515,28519,37606,41963,29851,28719,18603,42121,13429,26763,41962,35861,
-37968,36046,18009,35174,33220,33214,31080,10542,33735,21858, 9872,32383,
-19996,35352,36326,30647,19350,32119,17751,30422,33746,28526,18003,38449,
-12303,30287,36336,18945,28983,15177,35873,35878,19987,38640,18008,35578,
-33219,33213,31079,10666,33734,21857, 9871,32382,19995,35469,36325,30646,
-19349,32524,17750,30421,33745,28525,18002,38448,12302,30323,36335,19042,
-28982,15176,35872,35877,19986,38639,18007,35173,33218,39538,31078,10541,
-39575,21856,24379,32381,39537,35351,36324,30645,19348,39574,17749,42120,
-33744,28524,41961,38447,26910,30286,42119,18944,28981,15175,35871,41960,
-19985,38638,18006,35172,33217,33212,31077,31844,33733,34768, 9870,32380,
-19994,35350,36323,37927,19347,32118,17748,30420,33743,34945,18001,38446,
-12301,30285,36334,37486,28980,29814,35870,35876,19984,38637,35881,43188,
-19019,43115,19000,43043,18937,42904,19125,40860,41464,40864,41531,40856,
-41497,27449,27858,26485,26484,18893,35399,18905,18871,36637, 8640,43490,
- 8638, 8636, 8632,43488, 8630,27913, 6309,27643, 6199,27650, 6201,27648,
-27317,15071,21781,27319,36291,30114,30113,18035,18034,18843,27630, 6194,
-27198,26411,27628,27627,27626,17953,18752,18873,18877, 6850,14325,14323,
-13562,27200,27195,26544,26498,35410,18842,18840, 7945, 4605,36290,29959,
-29958,18839,26754,26753,18838,30779,28661,28542,28311,32951,38593,37485,
-26198,38808,32719,26208,26206,26210,28413,12590,18544,11602,18501,10103,
-18493,11601,18500, 7875, 7873,27185,26532,26483,27409,27411,26491,27792,
-26530,26719,26489,26712,12815,27808,26482,27790,27795,27794,26070,27380,
-30341,10472,28732,29134,29567,29569,30349,30351,29019,29021,27745,26481,
-26480,25346,25339,25355,38807,32718,26068,26073,25349,25351,25348, 2714,
-26479,25856,26478,25855,26477,25854,26067,26078,32125,19191,26065,26076,
-26476,26475,26072,26080,26131,26136,32145,10040,37484,37483, 4063, 5977,
-22224,15675,18722,38647,38592,36537,38591,26410,26474,26473,26416,26683,
-27293,27228,26245,26662,35635,28328,28327,43141, 8634, 3698, 3417,43138,
- 8621, 3713, 3441, 4213, 6544, 4218, 6524,40309,21826,15119,24933,20136,
-12548,31819,24935,29131,37427,37426,37408,38126,37407,24931,24929,17280,
-35772,17341,35771, 8954, 8953, 8972, 8971,32782,38780,32780, 9335,38778,
- 9333,35811,32911,35810,32910,35809,32909, 9436, 9435, 9450, 9449, 8407,
- 8256,38629, 8415, 8264, 8255, 8406, 8263, 8414,35185,30123,35217,30156,
-35214,30153,35789,40137,14174,32950,32949,32948,32953,35923,39167,35925,
-38697,30195,42782,38646,27407,27788,27787, 8189,35791,12362,12359,11671,
-11668, 8208,38343, 8206,38341, 8147,38291, 8145,38289, 8143,38287,10851,
-27142,10850,27121,10849,27044, 6334, 1523,11177,11175,15347,23665,25199,
-23667,25201,41325,41317,41322,41314,12358,23576,40851,37545,38125,37544,
-37543,37541,41764,40304,28309,28308,28307,43105,18991,28306,28304,28884,
-35642,42567,41159, 9349,33613, 2854,28895, 2849,33611, 2852,28893, 2847,
-13527,26472,11550,36307, 9348,13526,18492,33879,41480,33867,41510,41496,
-41445,41530,41535,43810,43282,43307,37913,41501,41463,13758,43028,41495,
-43007,41529,12582,18534,26682,12589,18543,33877,41478,33870,41514, 4208,
- 6553, 4263,22580,16060,11642,19693, 6603,11623,25597, 7060,19674,25585,
- 5684, 2676, 3005, 3140, 4055, 5988, 4207, 6550,20547, 5987,19189,20546,
- 9831,13525,20545, 9723,40302,40300,40298,38633,31123,25354,25357,40313,
-40315,40312,40311,19187, 2935, 2932, 2975, 2972, 2931, 2389, 2392, 2388,
-38391,12812,38367,38390,38360,10845,23489, 9521,23488,23541,23486,10861,
-35182,30120,10858,12326,35220,30158,12323, 3320, 3318, 3083, 2317,41305,
-27826,27824,27810,30339,28303,30476,21529,28302,30475,21527,28301,30474,
-35418,30472,24979,41370,28299,40542,28298,40374,28297,41301,28504,41303,
-28296,40378,28295,40389, 9517,22223, 9515,22222,28294,30471,15673,28293,
-30470,26087,23485,26085,23484,26089,23634,26143,23482,28291,30468,35840,
-25163,24068,33717,30467,33713,31149,36306,36274,36305,33668,36280,36279,
-33666,41175,33726,30753, 8805, 9754,35271,35600,11567,11566, 8646,35602,
-11561, 8644,40541,43812,40373,43309,40377,40376,43284,40388, 5853,40387,
-35409,30466, 8193,35407,30465, 8192,35381,30464, 8184,35379,30463,35570,
-30461,43352,28290,30460,27624,28289,30459,28287,30457,39372,30625,39369,
-30622,38899,31715,39351,30456,39349,30978,39353,31089,29622,31709,38885,
-31720,38884,30455, 8191,38882,30961,39786,30454,31739,35838,35795, 9519,
-24942,24946,10856,10860,36345,36353,36344,36355,36343,36351,27406,35181,
-30119,35281,30226, 8360, 8356, 8330, 8358,39348,32112,36349,36348,36347,
-35184,30122,28764,41298,25054,40688,35240,30453, 8794,35249,30966,28852,
-35594,28858,28857,35592,35385,30452, 4903,35397,30969,11554,35412,30451,
-24989,41350,37156,36374,38124,38073,32589,11073,42118,18242,16618,38061,
-11079,42117,17959,36254,33491,33503,36103,33681,30912,17872,30766,19973,
-36261,19585,31039,28755,35991,36093,33703,33698,37155,38123,36373,18241,
-37154, 9818,20884,14498,26409,27227,26106,41758,37129,18218,12026,42159,
-18240,12035,42116,35785,38881,32098,33691,33693,33689,22218,12043,13218,
-10294,10292,12028,30542,30450,30538,30449,31151,30448,31161,30447,31163,
-31165,10883,22217, 5329,42155,42974, 8736,42153, 4951,41300,31460,30446,
-31458,30544,31450,30445,30548,30444,30546,30443,30850,30442,31129,30441,
-31171,30440,31177,31167,35657,35781, 5119, 5121,43484,18837,42822,32959,
-28339,32957,28337,10890,10889,35180,30118,10888,35116,30009,32955,28335,
-32956,28336,10886,32142,30439,32107,30438,33826,29060,33828,29062,30848,
-31159,32105,31158,18239,12112,42115,40294,22797,16335,11611,19666,23481,
-11704,19724,23480,11710,19727,23478,11634,19685,23477,11722,19733,23476,
-40292,21574,14298,14322,21593,40290,11726,19737,23475,11202,19384,23474,
-11677,19713,23473,11674,11673,19710,23534,11205,19387,23472,11208,19390,
-23471,11353,19502,23470,11011,19312,23469,11649,19700,23468,12449,20095,
-23467,11007,19309,23466,11630,19681,23465,12445,20092,23464,16116,10909,
-19216, 6507,10843,19185, 7796, 5508, 1553, 6102, 1544,11201,19383, 7799,
-10841,19183, 6769,10917,10916,19222, 6757, 1919, 5507, 5506, 2337,11200,
-19382, 7798, 3099, 5379, 5378, 3456,11204,19386, 7743, 3078, 5354,14173,
-14650,11010,19311, 6602,10930,19231, 7795,10927,10929,19230, 7724,10926,
-19228, 7741, 5302, 2336,11207,19389, 7616,10838,19181,41258,11641,19692,
-41257,10836,19179,41256,16649,22930,25272,11033,19314,25535,11323,19482,
-25545,11004,19307,25874,11315,19476,25895,12442,20090,25866,11468,19595,
-25469,11456,19577,25457,32610,32609,16651,22932,25274,30785,30886,11537,
-11335,11325,19484,25547,25471,19597,11470,16682,12289,16681,25058,22939,
-16691,12141,11331,16598,30781,11329,11767,11766,11320,19480,25541,12003,
-12140,11319,19479,41255,17819,18627,28695,29901,30805,31851,33397,34784,
-34199,34372,31609,31413,36013,37935,11341,13776, 9661,10272,33417,34953,
-29546,29343,36783,36939,36029,37525,28681,29821,30797,31919,19488,21087,
-17818,18651,28694,29922,30804,31892,33396,34847,34198,34371,31608,31412,
-36012,37979,11340,13854, 9660,10330,33416,35031,29545,29342,36782,36938,
-36028,37619,28680,29861,30796,32001,19487,21199,35953,18354,28693,29561,
-30803,31431,33395,34354,34197,34370,35934,31411,36011,36765,28634,12748,
-30745,10011,33415,34214,33340,29341,36781,36937,36027,36957,28679,29325,
-30795,31599,33320,20434,35951,18353,28692,29560,30802,31430,33394,34353,
-34196,34369,35932,31410,36010,36764,28632,12747,30743,10010,33414,34213,
-33338,29340,36780,36936,36026,36956,28678,29324,30794,31598,33318,20433,
-18163,34524,18170,34539,38973,41703,29442,14761,14765,14758,14451,13068,
-10317,20704,13105,42224,24299,30412,43809,43281,43306,38235,27349, 7889,
-14291,14320,14307,14275,27292,32314,26432, 8142,38286, 8205,38340,32311,
-26426,27542, 7973,24301,30414,29621,31708,38245, 2898,34620, 3233,38243,
- 2890,34618, 3225,38241, 2909,34616, 3245, 2476, 2353,29613,31699,38239,
- 2333,34614, 2311,38232, 2959,32947, 2997,38230, 2957,33238, 2995,32946,
- 2920, 3256,38218,33236, 2918, 3254,38216,32945, 2913, 3249,38211,33141,
- 2911, 3247,38209, 3284, 3458,28841,30957,38225, 2952,33595, 2990,32944,
- 2906, 3242,38205,33111, 2889, 3224,38171,26471,33619, 2904, 3240,38203,
-33617, 2902, 3238,38201,33615, 2900, 3236,38199, 9347,33603, 2896, 3231,
-38189,33601, 2888, 3223,38170,33599, 2908, 3244,38207,40288, 5473,19177,
- 6077,19175, 6083,40286, 5510,20671,42202,28668,40774,28870,35518,28876,
-28875,35516, 3026, 2497,12321,35396,30968,43080, 8776,42253, 4974, 9563,
-35780, 9562,35779, 9561,35778, 9560,35777,35621,35776,43187,43525,33087,
-28410, 8381,40344, 6063,40349, 5471, 8656, 8665,35769,35619,43193,43529,
-24924,24922,19170, 6052,40280, 5460,19169, 6094,40279, 5498,40284, 6048,
-40278, 5456,35768, 9554,35767, 9553,42816,42903,33083,28406, 8214, 8219,
-42821,42908,35276,30221,10834,40283, 5465,19173, 6057,40282, 5484,19172,
- 6072, 4604,35480, 8688,38151, 7004,35486, 8696,38161, 7021,35484, 8694,
-38154, 7019,11715,11706,15672,11667,11713,11702,15669,11664,11699,11717,
-11708, 5397, 3116,14777,14260, 5481, 3113, 5447, 3389,14741,14220, 5446,
- 3339, 5412, 3500, 3132, 5411,14204,14721, 7329,21927,15249, 5494, 2352,
- 5372, 3448, 3101, 5382,14186,14691, 2327, 5344,14162,14608, 3077, 5353,
-14172,14646,11648,19699, 6601,35482, 8692,38166, 7017, 5392, 3473, 3110,
- 5391,14192,14699,23463,43692,43694,24920,38951,22867,16482,33249,28118,
-16479,28586,28115,22864,30710,35901,40584,16114,11661,23661,38948,22861,
-16476,43690,33246,28112,16473,43689,28583,28109,22858,30707,35898,40581,
-25195,23462,43789,43767,24919,23461,43688,43686,24918,16464,28568,30692,
-28588,33251,30712,24853,35903,24812,28590,33253,30714,24855,35905,24814,
-28576,30700,28575,30699,28574,30698,28594,30718,28593,30717,28592,30716,
-23460,26117,23459,26125,25062,24917,25064,24916,23615,26119,23618,26127,
-24915,25159,24914,25161,23458,25068,23457,25070,25378,24913,25384,24912,
-23580,24911,23578,24910,25380,25086,25386,25084,23456,23455,43698,43696,
-43702,43700,24909,24908,23454,28127,23453,28131,28125,24907,28129,24906,
-23452,25073,23451,25076,27214,24905,27040,24904,23584,24903,23582,24902,
-27216,25090,27042,25088, 9897,23617,27212,23825,27038,23807,25508,25507,
-25485,25484,38076,32635,24060,43752,24059,43747,43751,25989,43746,25988,
-16663,38064,23708,23707,28163,28162,28160,28159,25277,25276,33688,11488,
-11501,33695,11465,19593,41254,23833,23813,24901,25514,24900,25491,25516,
-25493,23824,23806,25376,25506,25382,25483,25505,25482,23840,23819,25258,
-25524,25255,25501,25521,25498,16662,40650,40648,12139,16661,17475,16660,
-17494,16708,32634,16655,11765,16654,16668,16665,17463,25268,22928,16640,
-16658,12002,16657,41253,22927,16639,27274,27104, 8615, 2949, 8724, 2967,
-24899,24898, 5711, 3168,27087,27257,39591,39593,39778,39780,24897,24896,
-25305,41442,41415,24895,24981,41405,41436,24894,40670,21283,13733,25304,
-20144,12556,40669,23178,17049,25303,23330,17279,40668,22082,15459,25302,
-21736,14943,40667,22103,15510,25301,21714,14841,31816,38978,12457,20101,
-23723,12456,20100,23722,12455,20099,25853,25930,41147,41165,24893,25153,
-25151,41527,41493,41518,41484,24892,24891,24985,24983,41512,41476,41523,
-41489,24890,24889,29127,37418,38081,38944,38942,25926,25928,41143,41145,
-41161,41163,24888,24887,25157,24316,25155,24308,26445,24886,26435,24885,
-31153,30573, 8606,27241, 8708,27067,24884,11397,24883,19535, 5633,40721,
- 8611,27268, 8716,27098,24882,13815,24881,21327,27278,27119,15862, 8485,
-22401, 8532,24880,24879,27266,27096,13813, 5014,21325, 5150,24878,24877,
-24305,25080,24314,25078,24876,26430,24875,26443,38381,12808,38372, 9614,
-33240,28553,30852,30588,23810,25510,23829,25487,24874,25489,24873,25512,
-28730,32109,30590, 8604,27239, 8706,27065,25072,11400,25075,19538,23818,
-25523,23839,25500,25257,25497,25254,25520,25114,41379,26145,23677,25211,
-24077,36418,36416,36452,21509,20039,35274,30219,12320,35212,30151,33801,
-29031,33802,29032,12319,12317,12316,12325,33814,29038,29030,31148,29029,
-31147,33804,29034,31169,31146,33818,29042,23805,25504,23823,25481,26115,
-25480,26123,25503,25094,40694,30575,35818,25066,41355,14455,13070,10319,
-20706,13107,42226,34316,10000,34335,34160,17805,17791,20405,11306,35931,
-35950,34178,28631,31377,31577,31392,20421,29288,18326,29307,29527,36724,
-30742,33337,33317,18336, 9654,19444,19455,36899,36743,36918,12737,34315,
- 9999,34334,34159,17804,17790,20404,11305,35930,35949,34177,28630,31376,
-31576,31391,20420,29287,18325,29306,29526,36723,30741,33336,33316,18335,
- 9653,19443,19454,36898,36742,36917,12736,34314, 9998,34333,34158,34388,
-36806,31455,29578,35929,35948,34387,28629,31375,31575,31644,20419,29577,
-18324,29305,29525,36980,30740,33335,33315,29358,31643,36979,34229,36897,
-36741,36916,12735,34530,23691,34519,23690,34518,23689,37417,37349,37500,
-37481,37567,37337,37555,33628,33624,33374,33373, 9760, 9764,19763,19759,
-31002,30998,33638,33642,30765,30764,30983,30987,28913,28909,28652,28651,
-36225,36221,28904,28900,17915,17911,11887,11883,35990,35989,36188,36184,
-34783,33502,33372,33371,10271, 9735,21086,19584,31918,30877,34952,33490,
-30763,30762,31850,30911,29820,28754,28650,28649,37934,36102,29900,28792,
-18626,17871,13775,11515,35988,35987,37524,36092,34846,33501,33370,33369,
-10329, 9734,21198,19583,32000,30876,35030,33489,30761,30760,31891,30910,
-29860,28753,28648,28647,37978,36101,29921,28791,18650,17870,13853,11514,
-35986,35985,37618,36091,33500,33499,38464,38679, 9733, 9732,19582,19581,
-30875,30874,33488,33487,30759,30758,30909,30908,28752,28751,32408,32159,
-36100,36099,28790,28789,17869,17868,11513,11512,35984,35983,36090,36089,
-20673,42204,28671,40777,43082, 8778,35236,31145,42255, 4976,12467,15666,
-12584,18536,15665,18529,11600,18499,43684,43683,43682,43681,41521,41506,
-41487,41472,28106,28105,41520,41486,41505,41471,28104,28103,12588,18542,
-35566,30397,17734,29615,31701,29620,31707,11594,11580,11593,11592,13438,
-40317,40319, 2675,11660,19708,41252, 6693,40409,12569,20157,40408,40672,
-12563,20151,40276,40403,40406,12618,42353,20165,42669,40402,40405,40550,
-40548,12621,42356,20168,42672,40274,40272,40554,40552,35279,30224,34631,
-29684,40270,43213,40268,43541,40400,40397,24303,34628,29681,40399,43210,
-40396,43538,32283,11690, 3331,32281,11697,11696,11695,11694,19722, 2733,
-11692,19720, 2731, 6695, 6692,34708,29761,20865,13242,11180,11183,11179,
-11182, 2831,15192,39417,31625,18280,19041,29473,30322,31309,32523,34248,
-35577,34246,34106,31307,31515,36671,38267,12696,14376, 9964,10665,34104,
-35468,29216,29471,36826,36669,36824,38048,29214,30065,31513,32207,20360,
-21617,18318,37584,29511,29813,31361,31913,34295,34944,34300,34148,31356,
-37965,36713,37480,12727,29846, 9992,31873,34152,34767,29271,34991,36876,
-36717,36881,37926,29266,29895,31557,31843,20395,34820,42168,18576,29518,
-29812,31369,39620,34308,34943,34307,39550,31368,31564,42011,37479,26800,
-13352,24374,10138,39549,34766,29279,29517,36889,42010,36888,37925,29278,
-42167,31563,31842,39619,20989,18315,18575,34990,34819,31355,31912,34299,
-34942,34294,34151,31360,31556,36716,37478,21142,21022,18640,18594,34147,
-34765,29265,29510,36880,36712,36875,37924,29270,29894,37964,37583,20398,
-20988,39536,10155,34989,34818,31354,41959,34298,26909,34293,42114,31359,
-31555,39573,31872,24378,21021,26908,18593,42113,29845,29264,29509,36879,
-39572,36874,24377,29269,39535,37963,37582,41958,13391,39547,10137,34941,
-34764,31365,42007,34304,26936,34303,42164,31364,31560,39617,31841,24384,
-20987,26935,18574,42163,29811,29275,29514,36885,39616,36884,24383,29274,
-39546,37923,37477,42006,13351,38766,32717,41738,39446,26352,38806,41818,
-39493,26389,32819,38805,32818,38804,32817,41744,39452,26362,38765,41826,
-39501,26397,32716,38764,32715,41740,41820,23329,39495,17278,39448,26391,
-26354,23177,24271,17048,24282,41746,41828,23176,39503,17047,39454,26399,
-26364,23328,24276,17277,24285,24278,26367,18312,19039,29506,30320,31351,
-32521,34285,35575,34290,34140,31346,31552,36705,38265,12724,14374, 9989,
-10663,34144,35466,29261,29502,36866,36709,36871,38046,29256,30063,31548,
-32205,20392,21615,18311,37476,29505,29843,31350,31955,34284,34987,34289,
-34139,31345,37922,36704,37580,12723,29810, 9988,31840,34143,34816,29260,
-34940,36865,36708,36870,37961,29255,29907,31547,31870,20391,34763,42112,
-18591,29504,29842,31349,39571,34283,34986,34288,39534,31344,31551,41957,
-37579,26762,13389,24370,10153,39533,34815,29259,29501,36864,41956,36869,
-37960,29254,42111,31546,31869,39570,21019,18310,18590,34939,34762,31348,
-31954,34282,34985,34287,34138,31343,31550,36703,37578,21080,20986,18621,
-18573,34142,34814,29258,29500,36863,36707,36868,37959,29253,29906,37921,
-37475,20390,21018,39491,41816,18351,18625,29558,29899,31428,31849,34351,
-34782,34367,34194,31408,31606,36762,37933,12745,13774,10008,10270,34211,
-34951,29338,29543,36934,36778,36954,37523,29322,29819,31596,31917,20431,
-21085,18350,18649,29557,29920,31427,31890,34350,34845,34366,34193,31407,
-31605,36761,37977,12744,13852,10007,10328,34210,35029,29337,29542,36933,
-36777,36953,37617,29321,29859,31595,31999,20430,21197,39509,41834,39497,
-41822,39416,39422,36636,26312,40618,12761, 9997,34313,34157,34332,17789,
-17803,11304,20403,35947,35928,28628,34176,31574,31374,20418,31390,18323,
-29286,29524,29304,30739,36722,33314,33334, 9652,18334,19453,19442,36740,
-36896,12734,36915, 9996,34312,34156,34331,17788,17802,11303,20402,35946,
-35927,28627,34175,31573,31373,20417,31389,18322,29285,29523,29303,30738,
-36721,33313,33333, 9651,18333,19452,19441,36739,36895,12733,36914,26314,
-40623,12765,40108,39363,34244,18711,34242,34102, 9962,32204,20358,35465,
-31511,10662,34100,21614,31305,38045,31303,20356,29212,18278,29210,35574,
-36667,19038,29469,14373,18276,38264,12694,30319,36822,36665,36820,22228,
-34292,18709,34297,34146, 9991,32202,20394,35463,31554,10660,34150,21612,
-31353,38043,31358,20397,29263,18314,29268,35572,36711,19036,29508,14371,
-18317,38262,12726,30317,36873,36715,36878,22226,26350,24269,27187,27023,
-34349,33623,34365,34192,10006, 9763,20429,19758,31594,30997,34209,33641,
-31406,31604,31426,30986,29320,28908,29336,29541,36760,36220,29556,28899,
-18349,17910,12743,11882,36932,36776,36952,36183,34348,33627,34364,34191,
-10005, 9759,20428,19762,31593,31001,34208,33637,31405,31603,31425,30982,
-29319,28912,29335,29540,36759,36224,29555,28903,18348,17914,12742,11886,
-36931,36775,36951,36187,34330,18612,34311,34174, 9995,31998,20416,35028,
-31572,10327,34155,21196,31388,37616,31372,20401,29302,18332,29284,34844,
-36738,18648,29522,13851,18321,37976,12732,29919,36913,36720,36894,21052,
-34329,18579,34310,34173, 9994,31916,20415,34950,31571,10269,34154,21084,
-31387,37522,31371,20400,29301,18331,29283,34781,36737,18624,29521,13773,
-18320,37932,12731,29898,36912,36719,36893,20995,39415,36635,36645,36634,
-18150,32346,18876,18918,24312,24295,43680,43679,43678,43677,26441,26422,
-24311,28102,24294,28101,28100,26440,28099,26421,29619,31706,35564,30395,
-24748,12785,38909,17715,34572,32943,34565,32942,33109,32941,33107,32940,
-33462,32939,33464,33255,33791,32938,33839,32937,26996,33854,42329,33231,
- 4860,26990, 4869,42075, 4812,31180, 4889,42318,30662,30658,42070,31184,
-42110,29066,28535,28538, 4851,41955, 4868,29084, 4811,42109, 4886,26761,
-41954,35888,26760,36447,33841,33229, 6909, 6154,33836,33460,36639,34574,
-33128,35369,32936,35343,32935,35345,33257, 4929, 4853, 4801, 8174, 8594,
-26661,35341,33835,20883, 4403,27646,33832,36456,29081,34567,33172,36633,
-33793,33174,35371,33176,20032, 6170,31135, 7934,31122,21877,36400,15196,
-38669,38458,32136,32394,36405, 8854,12314, 8759,21876, 7933,32393,31121,
-38668,12313,36399,36404,32135, 8758,15195, 8853,38457,31134,20031, 7031,
-27226,35360,33777, 6907, 6152,27545, 7976,27376, 7910,25374, 5783,40720,
- 5590,40719,27247, 8608,27078, 8710,11395,25577,19533,25579,25372,34570,
-33459,36372,38122,40107,18793,26105,38657, 5299, 6951, 5277, 6942, 5207,
-35783,36420,35787,36422,35213,30152,35211,30150,35122,30023, 8388, 8378,
- 8328,24307, 8365,36415,36414,35216,30155,26359,24273, 8422, 8428, 5279,
- 6944, 5209,32415,39946, 7623, 5315,32412,39943, 7620, 5312,18875,32509,
-16150, 2984,35426,30960,32517,16139,30869,11425,25477,25461,30880,11462,
-30866,11422,39427,30599,35836,36440,36444,10217,34885,14438,42333,10393,
-20892,14503,42335,10413,20894,10266,34883,20882, 5976,26660, 7452,40393,
-22765,40392,42558,17686,24994,24996,38675,37474,26104,38673,37292,41297,
-41296, 5257,41295,42384,35378,31144, 7315,41309,22694,41308,42557,18046,
-26133,26138,42926,17689,25000,24998,26707,26706,11659,19707,23731,16164,
-22675, 3628,22673, 3626,27999, 3736,16172,22678, 3635,22677, 3634,28001,
- 3741,36160,14714,11656,36158,14704,11128,11130,11151,11166,11150,11165,
-18238,11137,11136,11156,11171,11139,11158,11173,43676,43675,40426,40422,
-23861,43674,43673,25549,11054,28809,30936,11052,11058,24334,28821,28828,
-30949,37997,11056,37655,19527,24456,19529,24467,17847,28737,30847,28736,
-30846,17852,24463,38607,24789,38434,22436,24452,22433,24449,18761,32104,
-30104,18766, 9511,24629,23450,22216,19145,21808, 9502,24823, 9509,24627,
- 9506,24624,23447,22213,10827,22210,19142,10825,27623,21805, 9499,24821,
-12241,24413,11978,11977,24351,37674,12240,38014,12239,24346,11976,11975,
-24408,38009,12238,37669,36177,23963,36172,23958,34838,10321,34735,29788,
-34724,29777,29106,29096,34761,10289,12275,18486,39272,17971,34802,10265,
-12256,24403,12237,12236,24341,37664,12254,38004,12252,24339,12235,12234,
-24401,38002,12250,37662,36165,23951,36167,23953,34650,29703,34652,29705,
-25917,25916,25915,25914,25913,25912,12270,24399,12269,12268,24337,37660,
-12267,38000,36163,23949,34648,29701,39271,39270,39269,39268,39614, 9840,
-39611, 9837,39311,39313,15815,18446,15664,18407,25958,25957,39326,39325,
-15938,18403,11852,24415,11851,11850,24353,37676,11849,38016,11848,24410,
-11847,11846,24348,37671,11845,38011,36179,23965,36174,23960,23948,36162,
-34737,29790,34726,29779,23955,36169,25637,25636,25635,25634,39114,39113,
-39112,39111,39110,39109,25665,25663,12587,18541,11879,18498,14047,18440,
-25702,25701,39166,39165,14090,18402,39108,17936,11844,24405,11843,11842,
-24343,37666,11841,38006,34806,10216,34670,29723,34760,10233,11867,24398,
-11866,11865,24336,37659,11864,37999,34647,29700,10477, 2940,32467,16149,
-32466,16148,22209,30149,27815,22206,30146,27818,21516,30358,29052,42781,
- 5262,29055, 5650,32406,39962, 7642, 5292,32403,39959, 7639, 5289,30355,
-31454,31143,27276,27113,15961, 8496,22495, 8542,26122,26114, 9817, 9816,
-40359,40358,40357,38632,36068,38628,36066,25364, 5587,25362, 5585,27744,
-35164,27741,32167,30182,43039, 8749,28286,30437,28285,30436,28557,30676,
-23626,25167,28284,30435,15392,38911,22203,15663,28480,30608,28283,30434,
-13472,38888,38891, 9556, 9558,32073,17462,28408,30540,28282,30433,28281,
-30432,28546,30667,23599,25139,28280,30431,32743,17461,17460,16952,32742,
-32889,17532,32841,17492,32823,28445,30560,26002,23327,17046,17276,23175,
-41237,32840,32328,32320,26000,23174,17275,17045,23326,41235,16461,22851,
-41251,16456,22848,41249,14757,14744,14494,14440,28961,31061,24084,26022,
- 9874, 9881,41268,41241,15171,24103,26041,24102,26040,24101,26039,24100,
-26038,24099,26037,41261,24098,26036,24096,26034,24095,26033,24094,26032,
-28970,31070,24093,26031,17457,14547, 9868, 9879, 9866, 9877,28967,31067,
-24111,26049,15173,41263,24108,26046,39341,22202,15662,28964,31064,24106,
-26044,28960,31060,24082,26020, 9865, 9876,32852,17456,17548,32851,17455,
-32816,32785,32916,17531,17044, 9586, 9584,32333,32325, 9591, 9589, 9595,
- 9593,28279,30430,12843,38913,22201,15661,28482,30610,40679,23173,17043,
-25319,23325,17274,40677,23324,17273,25317,23172,17042,32839,32327,32319,
-13094,11464,19592,25465,14477,13090,14461,13088,11377,11369,28713,30829,
-23737,25323,13425,39016,38994,39015,38993,39014,38992,39013,38991,39012,
-38990, 9676, 9671,17454,28706,30823,28704,30821,11381,11373,13427,25313,
-22200,15660,11379,11371,11376,11368,28703,30820,28278,30429,36332,17990,
-14546,14542,14497,14496,22199,15659,17992,36342,13093,13092,22198,15658,
-36055, 2866, 2829, 3638, 3744, 3499, 3633, 3740, 3484,11658, 3631, 3738,
- 3477,11670,11655, 5719, 3176, 5341, 4133, 4211, 6542, 5449, 3341, 6652,
- 3662, 3115, 5396,14196,14706, 3112, 5394,14194,14701,42953, 8732,11657,
-19706, 7754, 3118, 5400, 5399, 3481,11676,19712, 7757,11654,19704, 7752,
- 5403, 3483, 3120, 5402,14198,14713,27282,27129,15657, 8469,22197, 8525,
-25605,25607, 5438, 3330, 5347, 2330, 4205, 6539, 4204, 6536, 4216, 6535,
-18237,30015, 5335,42108, 5656,42107, 5334, 4130, 4202, 6534, 9809, 9807,
-12024,12022,26008,26705,31206,13483,12498,43672,43671,41432,41401,28098,
-41431,41400,28097,12417,12474,37392,41411,10446,37390,41407,43005,41462,
-12490,13482,12473,13478,12472, 4325,13891,13909,41113,11025,11027,11024,
-41934,41909,41932,41907,41930,41905,43557,43224,41928,41903,25633,26470,
-39107,22052,15418,25818,26704,10264,10263,10262,10261, 9791, 9790, 2808,
-12838,12830, 2417, 2470, 2512,26469,25852,26468,26467,26466,26465,12840,
-41950,41925,41947,41922,41942,41917,41939,41914,15417,22051, 7469,12848,
-12847,12835,26703,26702,26701,26700,26699,25611,31367,29516,42166, 4823,
-42009, 4867,26799, 4810, 4873,34306,36887,42106,26907,41953,31562,29277,
-34302,26934,42162, 4821,42005, 4866,31559, 4809, 4871,31363,29273,42105,
-29513,41952,26759,36883,13383,12952,13474,12951,13042,12950,13020,12949,
-14487,15161,13350,13349,20985,20984,27892,27483,13348,20983,25782,13347,
-20982,25206,12948,12947,20544, 4262,12946,12945,26464,14072,26566,26463,
-14046,26580,26462,18439, 4603,14071,13524,14070,18453,18438,17861, 4657,
-26461,17863,13626,18471,14057, 4633,13523,14045,22196,21308,39164,39106,
-39324,34716,29769,10260,10259,10258,10257,10256,10255,13793,13786,13790,
-13783,10254,10253,10252,10251,42104, 9370,42103, 4943,42102, 8891,42101,
- 4942,42100, 5521,42099, 4941,42098, 4940,42097, 5861,42096, 5548,42095,
- 4939,42094, 4938,42093, 5224,39607, 6179,39604, 6176,39600, 5011,39597,
- 5008,32103,30103,11072,11078,12111,13800,13797,39315,12034,12944,13018,
-26606,13076,13075,13600,32387,18401,26557,32345,32365,14060,26556,14059,
-26555,34072,34074,35363,33779,32386,32385,32344,32363,14015,13566,18400,
-18399,32343,32360,41729,41726,14014,13565,32342,31867,18491,10102,13908,
-18497,32463,16138,39646,39105,39267,39266,39104, 8395,38401, 6355,41721,
- 2806,14942,14940,15509, 2419, 2472, 2515,15507,38567,30014,30070, 6192,
-21609,14364,18236,30013, 5520, 4129,14974,15523,13346,13345,13381,13344,
-13040,13343,14489,15163,24034,23979,13415,25700,25956,25911,18771,18770,
-14056,10057,10087,17950,18452,18437,18457,10079,14044,17955,25910,25632,
-25631,30112,25667,14089,14069,15937,24022,15654,15908,17948,18398,18397,
-32341,15653,30111,12274,11878,12266,12265,12264,12263,11863,11862,11861,
-11860,11840,11839,11838,11837,11836,11835,11834,11833,11974,11973,12233,
-12232,11832,11831,11830,11829,12231,12230,11972,11971,12229,12228,12248,
-12246,12260,12258,12227,12226,32071,25909,12471,23983,23975,13362,39031,
-39034,23974,23973,24018,13370,24017,25987,23323,17041,17272,23171,41218,
-41216,23170,17040,25985,23322,17271,16688,16705,41214,41212,41210,43228,
-43561,41208,41207,43742,19608,11484,16702,22946,41206,41222,23193,17068,
-25991,23345,17302,41220,32632,32631,32629,32628,24058,43750,43745,25983,
-24057,43749,43744,25982,16694,16693,16711,11413,41203,43739,19605,11481,
-16698,22943,41202,11444,12020,11198,11196, 2533, 5649,11154,11169,19364,
-19373,23443,23442,25123,25132,17605,17604, 9495, 9494,11149,11164,19361,
-19370,23441,23439,25120,25129,17603,17601, 9493, 9491,11276,19424,25193,
-11263,28096,22842,19411,28093,16450,25186,22839,16447,14152,14598,14154,
-14600,40573,43670,43669,40565,11273,19421,25190,11260,28090,22836,19408,
-28087,16444,25183,22833,16441,40575,40567,11622,11639,19673,19690,23659,
-23654,25584,25596,17786,17781, 9645, 9639,40577,40569,11148,11163,19360,
-19369,23657,23652,25119,25128,17784,17779, 9643, 9637,11628,11646,19679,
-19697,23437,23436,25589,25601,17599,17598, 9489, 9488,25173,21913,15232,
-25175,22538,16001,12943,12942,20543,20542,27895,27486,11632,11651,19683,
-19702,23644,23642,25591,25603,17769,17767, 9618, 9616,11621,11638,19672,
-19689,23435,23433,25583,25595,17597,17595, 9487, 9485,24843,24802,27885,
-27476,24840,24799,27882,27473,11280,11267,19428,19415,24847,24806,11243,
-11222,11278,11265,19426,19413,24845,24804,11247,11226,11246,11225,11245,
-11224, 9633, 9626, 9631, 9624, 9630, 9623, 9629,22193,22192, 9622,11609,
-19664, 6702,11613,19668, 6646,11653,10814,19162, 2877,11724,19735, 6704,
-11720,19731, 6648,12357,10807,19156, 2750,35666,14645,35664,14654,14724,
-11679,19715, 6691,35668,14649,10928,10937,12356,22619, 3566,27955, 3703,
-22617, 3564,27953, 3701, 3642, 3747, 3503, 3652, 3754, 3510, 3650, 3752,
- 3508,12361,10908,19215, 2747,10907,19214, 2708,10905,19212, 2706,12355,
-22624, 3568,27957, 3705, 3648, 3750, 3506,10913,19219, 2711,36153,14644,
- 3409, 2351,16161,22670, 3623,22669, 3622,27996, 3733, 3621, 3732, 3472,
-36155,14698, 5721, 3178,11637,11620,19688,19671,25594,25582, 6644, 2752,
- 7104, 3068, 5757, 3211,22609, 3556,27948, 3691, 3647, 3749, 3505,11625,
-19676, 2678,14720,14712,14697,12350,20053, 6708,10920,10912,19224,19218,
-24965,24961, 6625, 2710, 7088, 3038, 5725, 3182,14643,11645,11627,19696,
-19678,25600,25588, 6598, 2670, 7057, 3002, 5681, 3137,11643,11624,19694,
-19675,25598,25586, 6604, 2677, 7061, 3006, 5685, 3141, 6665,11636,11619,
-19687,19670,25593,25581, 6597, 2669, 7056, 3001, 5680, 3136, 7420, 8000,
- 6079,22010,27569, 1609,15345,28036, 1696,16260,22730, 1661, 5493, 1546,
- 6090, 1536,14782,14264, 5488, 3076,11352,19501, 6767,11351,19500, 6759,
- 7423, 8002, 6081,22012,27571, 1593,15349,28040, 1694,16262,22732, 1659,
-11360,11358, 4196, 6563, 4559, 2510, 5632, 6430, 6983, 5538, 5417, 3315,
- 2532, 5648, 6454, 6991, 5552, 7418, 7998, 6076,22006,27567, 1615,15341,
-28034, 1703,16258,22728, 1668, 7429, 8005, 6096,22015,27574, 1945,15354,
-28043, 2010,16268,22736, 2045,11018, 7431, 8007, 6100,22017,27576, 1943,
-15357,28046, 2008,16271,22738, 2043, 7354, 7956, 6008,21954,27522, 3450,
-15280,27974, 3718,16127,22646, 3599,11022, 7356, 7958, 6010,21956,27524,
- 3452,15282,27977, 3720,16129,22648, 3601, 3219, 5763, 3215, 5759, 3217,
- 5761,12345, 7373,21966,15294,12347, 7375, 7969, 6025,21968,27538, 3512,
-15296,28009, 3756,16192,22687, 3654, 6020, 3468, 7964, 3728,27533,27992,
- 7367, 3617,21962,22665,15290,16157,11605,11607, 6022, 3470, 7966, 3730,
-27535,27994, 7369, 3619,21964,22667,15292,16159, 7212, 7880, 5884,21812,
-27338, 1956,15096,27654, 2021,15695,22246, 2056,15652, 7176, 7863, 5878,
-21771,27307, 1958,15057,27622, 2023,15651,22191, 2058, 5882, 1979, 7878,
- 2086,27336,27652, 7210, 2119,21810,22244,15094,15693,15650, 5877, 1981,
- 7862, 2088,27306,27621, 7175, 2121,21770,22190,15056,15649, 5903, 1972,
- 7898, 2079,27364,27706, 7254, 2112,21835,22345,15128,15791, 5905, 1970,
- 7900, 2077,27366,27708, 7256, 2110,21837,22347,15130,15793, 7277, 7914,
- 5937,21844,27383, 1947,15150,27748, 2012,15903,22442, 2047, 7279, 7916,
- 5939,21846,27385, 1942,15152,27751, 2007,15905,22444, 2042,11579,15682,
-15954,15648, 7174, 7861, 5876,21769,27305, 1951,15055,27620, 2016,15647,
-22189, 2051, 7225, 7887, 5893,21818,27346, 1941,15107,27681, 2006,15745,
-22304, 2041, 5965, 1995, 7927, 2103,27417,27801, 7292, 2136,21871,22489,
-15188,15956, 5967, 1997, 7929, 2105,27419,27805, 7295, 2138,21873,22492,
-15190,15959,15725,15646, 5875, 1974, 7860, 2081,27304,27619, 7173, 2114,
-21768,22188,15054,15645, 5898, 1969, 7893, 2076,27359,27701, 7249, 2109,
-21830,22340,15123,15786, 5963, 1993, 7925, 2101,27415,27799, 7290, 2134,
-21869,22487,15186,15953, 5975, 2335, 1930, 5492, 3095, 5371, 1929, 5238,
- 4396, 6018, 3466, 7962, 3726,27531,27990, 7365, 3615,21960,22663,15288,
-16155,15644, 5874, 1989, 7859, 2097,27303,27618, 7172, 2130,21767,22187,
-15053,15643, 5896, 1991, 7891, 2099,27357,27699, 7247, 2132,21828,22338,
-15121,15784, 5901, 1987, 7896, 2095,27362,27704, 7252, 2128,21833,22343,
-15126,15789,40964,40969,11764,11763,12001,12000,19881,19880,27891,27482,
-25817,25816,22535,21910,15998,15229,11762,11761,19755,19754,27894,27485,
-25630,25629,22537,21912,16000,15231,40905,40903, 9789, 9788,40901,40899,
-40897,40896,40966,40971,40909,40907,40895,40894, 6556, 2584,10923,19227,
- 7632, 5986, 2350, 6894, 5573, 5343, 2349, 6532, 2574, 6531, 2573,11135,
- 5333, 2323, 6530, 2572, 6538, 2576, 6558, 2586, 6548, 2579, 6523, 2567,
- 6552, 2581,42955,43330,42965,43372,42963,43370,43386,42977,43388,42979,
-43328,42952,27399,27780,18424,10069,27918,27458,27867,27441,27850,27237,
-18451,10078,26723,26534,25881,26460,25851,25613,25872,25850,25533,33674,
-28935,33476,28743,34646,29699,15642,22186,10387,20541,25975,33672,28932,
-25970,25973,25724, 6489, 6488,22185,16713,32639,32637,35179,30117,23822,
-35131,30072,15714,22269,15641,22184,15819,22373,15848,22391,12098,15640,
-22183,22249,16565,32569,32571, 9719,33478,28745,23832,25719,25969,25718,
-34680,29733,14043,18436,14466,14392,25879,25878,39323,17980,39257,17970,
-39317,17978,26434,29669,40064,43549,26428,39091,17935,39163,17943,39090,
-17934,39625,18600,34033,34028,34031,32368,15883,33670,28930,41658,41677,
-41679,39052,40789,10443,20697,10475,20687, 6684, 6686,10479,20540, 6681,
- 6680,18396,10056,14100,18395,32340,15639,21550,16438,32542,32541,22717,
-16437,32540,32539,15638,22182,35542,14642, 7787, 7786,10643,19009,10642,
-24512,19008,24672,12068,19901,24016, 6774, 6773,15637,22181,34007,34006,
-41647,41646,27847,27438,26554, 9787, 9786, 9785, 9784,43226,43559,43555,
-43222,25849,25610,26004,26007,15109,14390,26698,25609,10775,34837,15977,
-15208,22514,21889,27846,27437,15976,15207,27398,27397,21864,21863,22513,
-21888,27779,27778,15181,15180,27845,27436,22476,22475,15944,15943,24033,
-24032,23978,23977,27844,27435,22564,22563,16041,16040,27843,27434,21895,
-21894,15214,15213,27842,27433,22520,22519,15983,15982,15206,21887,15205,
-27865,21886,27456,27841,27432,21015,21014,13387,13386,27840,27431,20628,
-20627,13030,13029,15204,21885,25773,12104,12103,11744,11743,12094,12096,
-10779,34810, 9700,23972,23971,27861,27452,20981,20980,13342,13341,11739,
-11738, 7942, 7940,10724,10721,23970,23969,23982,24015,23968,23967,24014,
-23981,24013,24025,24027,24012,12070,27864,27455,22512,22511,15975,15974,
-27863,27454,20636,20634,13035,13032,24511,24671,19132,19131,10760,10759,
-10732,10735,24516,24676,19106,19108,10731,10734,24510,24670,19113,19112,
-10741,10740,24509,24669,19062,19061,10684,10683,10781,34759,15212,21893,
-25753, 7947,10429,10571,18816,18957,24508,24668,10426,10568,24505,18813,
-18954,24665,27870,27461,21901,21898,15220,15217,27873,27464,22526,22523,
-15989,15986,10439,10588,18828,18964,24526,24686,10437,10586,24524,18826,
-18962,24684,11737,11736,11945,11944,10596,10595,11735,11734, 9849, 9848,
-12067,12066,14142,14587, 9783, 9782,12065,12063,19900,19898,25848,25846,
-24011,24009,17969,17967, 9847, 9845,27876,27467,20539,20538,12941,12940,
-15223,21904,25776,12061,12060,14139,14584,12117,12115,19916,19914,25887,
-25885,24044,24042,17976,17974, 9858, 9856,11432,19557,25411,28147,22914,
-16602,41080,11934,19847,25742,28084,22830,16436,12222,12284,16672,12217,
-12215,41025,43668,11931,19844,25739,28081,22827,16433,11412,41027,11312,
-19473,25900,25247,19933,12130,41029,11109,19341,25898,25106,19931,12128,
-12154,19940,25920,28156,22923,16635,12183,19958,25945,25943,19956,12181,
-12158,19944,25924,25951,19964,12197,11798,19788,25675,25673,19786,11796,
-11776,19772,25641,25639,19770,11774,24992,20537,12939,12938,20536,25208,
-12059,11760,19753,25628,25627,19752,11759,11818,19804,25696,25688,19797,
-11808,11820,19806,25698,25690,19799,11810,40597,40758,40595,40594,11733,
-11449,11453,19574,25452,28145,22912,16597,12058,11816,19802,25694,25686,
-19795,11806,40639,41075,40637,11758,16629,11108,12193,11999,19879,25908,
-25815,19937,12138,12206,12205,12038,11757,19751,25785,25626,19870,11960,
-12937,20535,25784,25002,20534,12936,12057,43728,43725,32603,11411,19550,
-25402,28149,22917,16605,23999,25793,23996,25790,11938,19851,24003,11913,
-11936,19849,24001,11917,11916,11915,12045,12042,13120,15165,12156,19942,
-25922,25823,19886,12009,12122,19926,25891,25643,19774,11778,12125,19928,
-25893,25625,19750,11756,11815,32602,30882,43667,40537,12120,19924,25889,
-25693,19801,11814,11107,12033,12192,19962,25949,28154,22921,16628,12191,
-19961,25948,12190,19960,25947,25839,19892,12032,12296,19991,26015,12292,
-27396,21862,19981,27777,15179,26011,22474,15942,15399,12056,12846,12547,
-17076,15466,12055,15522,39256,39255,39254,39253,39252,39251,39263,39265,
-39250,39249,39248,39247,41047,41046,41059,41061,41051,41045,41043,41042,
-41041,41040,41039,41038,41037,41036,41035,25752,22562,16039,25751,22518,
-15981,25750,21013,13385,25749,20626,13028,13044,20642,25772,11943,12102,
-11742,12092,41054,41053,41056,12137,41034,14685,12136,11996,25761,20979,
-13340,11732,12162,25907,17091,15471,15526,39246,19972,12273,12354,17039,
-15458,15506,25771,22510,15973,24007,19896,12053,12090,24029,19903,12089,
-24006,19895,12052,24005,19894,12051,15407,12851,41065,41064,41063,41070,
-41068,41049,12119,41032,25779,22529,15992,11924,12041,41078,41073,11731,
-11311,19472,25246,28144,22911,16596,12050,25764,20533,12935,12049,12100,
-19908,25863,12189,12110,11106,19340,25105,28153,22920,16627,12109,19912,
-25883,12262,11859,17316,14861,11730,14973,14817,11729,12834,12408,39101,
-39103,39089,39088,39087,39086,39093,39095,39085,39084,39125,39121,39124,
-39120,40887,40886,40885,40884,40883,40882,40927,40893,40881,40880,40879,
-11755,40878,14710,14683,11754,11753,25624,25623,14807,12832,39083,20489,
-12859,39082,20052,12349,39081,21547,14236,39080,39079,43776,43805,39078,
-40447,43732,17270,14840,14939,17396,14901,15027,12225,12244,40915,40914,
-40913, 9781, 9780,11077,40876,40925,40891,40889,40936,40934,39151,39147,
-39150,39146,11813,11812,40932,40930,40938,14394,11970,12224,40944,40943,
-40942,11828,11827,40940,11826,40911,40947,39308,39307,39140,39139,11752,
-19749,25622,25621,19748,11751,14389,39077,39076, 9722, 9721,12135,19936,
-25814,25906,19878,11995,12934,13377,12967,13339,39117,39116,39149,39145,
-39154,39153, 9830, 9829,13375,12933,13338,12970,40737,40739,40734,17453,
-16185,16111,14676,12161,12134,12133,19935,25905,25813,19877,11994,12179,
-11794,11750,11749,16595,11439,11438,19567,25441,15755,17269,15754,15753,
-25531,25446,25408,19555,11420,25620,26459,25475,25474,25473,19599,11474,
-25445,25444,19570,11442,25406,19553,11418,25399,19547,11408,16959,17482,
-13265,13337,15636,39056,22178,15634,28773,30900,39099,39097,39119,39123,
-39075,39074, 9703, 9705,17452,28766,30894,28763,30892,28762,30891,12175,
-19951,25937,25837,19890,12018,40756,16626,11529,39135,39137,14641,11793,
-19784,25671,11748,19747,25619,12932,20532,25424,12048,11528,11522,11747,
-19746,25618,11780,19776,25645,12178,19954,25941,11436,19565,25426,11993,
-11992,19876,19875,27860,27451,25812,25811,22516,21891,15979,15210,25844,
-30888,11476,30863,11415,25810,12017,12016,19889,19888,27839,27430,25836,
-25835,22509,21884,15972,15203,25834,25940,19953,25939,19544,25396,25395,
-25617,19745,25616,19562,25420,25418,25647,19778,25649,19560,25416,25414,
-25670,19783,25669,19543,25394,25393,34715,29768, 1823, 1805,12576,24366,
- 1065, 1012,24432,38030,12599,37738,35076,34899,38032,37740,24173,22266,
-24434,21419,27315,26681,20922,13278,20920,13276,29112,20926,13281, 1859,
- 1842, 1150, 1140, 9932,39742, 9931,39741,24819,39740,34742,29795,13907,
-18540, 1482, 1476,12573,24363,12596,37734, 1062, 1009,24428,38026,12611,
-42344,12595,37733,35078,34901,38034,37742,24175,22274,24436,21423, 9930,
-39739, 9929,39738, 9926,39729, 9925,39728,24831,39727,29130,37421,29129,
-37420,29099,29109, 1469,36495,37425,37424,37423,12586,18539,12624,42360,
-20171,42676, 1479, 1473,12626,20173,42362, 1481,42678, 1475, 8054, 9922,
-39720,29125,37415,38037, 1149, 1139, 1152, 1142,12620,20167,42355, 1145,
-42671, 1135,35453,39526,38500,38702,24594,22314,41882,29647,27291,27290,
-27617,27314,27289,12795,30387,38366,30408,38358,38363,38365, 2930,38357,
- 2387,37255,29642,37254,29641,37253,29640,19022,43201,30416,38370,27663,
-37246,36144,37245,38299,40063,31679,40062,31678,31738,31737,31705,35446,
-31723,24604,15633,41888,29654, 8044,31735,38376, 2386,35443,31719,35442,
-31718,32516,16284,32479,16283,35456,39528,38504,38704,24596,22316,41884,
-29649,24601,29658,41890,15385,37241,37244, 1421,40058,31676,40057,31675,
-38385,12811,24756,12793,29602,30390,38389,38388,29600,29596,29618,31704,
-34636, 1433,29689, 1438,43219,43551,24599,29653,41887,15383,24598,29652,
-41886,15382, 1285, 1418, 8050,38379,12806,24754,12791,24750,12787,38378,
-38384,12810,38375,38387, 1306, 1294, 1303, 1291,29617,31703,29612,31698,
-34634, 1429,29687, 1436,43217,43548,34630, 1300,29683, 1288,43212,43540,
-30964, 3798, 3778, 3800, 3780,35425,30959,32462,16137,32461,16136,36652,
-34579,34586,36650,34577,34584,34085,29464,31470,29585,31656,31506,29370,
-29462,31468,29583,31654,31504,29368,36644,21875, 7932,32392, 5254,31444,
-20450,38667,12312,36398,36403,31443,31624,36800, 8757,12755, 8518,15194,
- 8852,38456, 8493,31120,31133,36972,36799,36971,12754,32134,20030,31623,
- 6169,20449, 7030, 8702, 8337,38763, 9313,41293, 8934,36480, 8701,43062,
- 8761,18031, 8593, 8173,38803,36371,36370,36369,18030,18029,18028,27225,
-41287,29017,38339, 8204,38308, 8169,34386,32391,34385,34228,31132, 7931,
-33774, 8517,31642, 8756,34227, 5253,36397,31641,38666,35366,35201,38455,
-33771,29576,36805, 6168,29575, 8492,36402, 8851,29015, 7029,36978,36804,
-36977,30301, 8061,41292, 7297,38121,38120,36368,18792,38119,36491,38118,
-38117,38116,31119,31118,41283,18027,41285,18033,27911,27641,42858,42857,
-26103,35204, 5619,36383, 5616,36380,24771, 7553,40207, 6407,31301,24617,
-34240,40205,34238,34098,31299,39906,36663, 7199,39905, 6221,43351, 7551,
-34096, 6406,29208,43349,36818,36661,36816,42721,29206,27330,42720, 7197,
-27172, 6220,24769, 7550,40204, 6404,31297,24616,34236,40203,34234,34094,
-31295,39903,36659, 7196,39901, 6218,43348, 7549,34092, 6402,29204,43347,
-36814,36657,36812,42718,29202,27329,42716, 7195,27170, 6216,34504,30404,
-34501,30401,18155,41645, 6885, 6148,41642, 7307,41673,41778,22311,41672,
-22818,41641,22547,41640,22332,41639,26348,26380,22545,41668,18159,41675,
-38227, 2955,34005, 2993, 2916,38213,34004, 3252, 2894,38183,34025, 3229,
- 2887,38169,34020, 3222, 2627, 2643,38824, 9409,41720, 9218,36476, 2626,
-41719, 2595, 2647, 2634,23169,18235,22102,18234,18217,21766,22081,18233,
-37188,18232,18231,18230,18216,21765,21923,18229,18215,36632,14274,35340,
-34569,20455, 2653,31640,31453,36976,12760,36803, 2617, 8060, 8540, 8244,
-38393, 6849,41718, 6440, 2625,36148, 8149,38297,41717, 3792,18228,18227,
- 6920, 6161,18226,18225,18224,18223,21921,18222,18221,41757,26415,41756,
-26414,20448, 2591,31622,31442,36970,12753,36798, 2464,18210,26408,26407,
-41754,34549,35325,41666, 7314,41665,41776,22693,41664, 6432,42556,18178,
-26697,26356,26393,34087,38762, 9312,41711, 8933,36479, 2483,41710, 2455,
-38802,37153,37152,37151,18209,18208,21763,18207,29565,21760,37224, 2557,
-18220,37221, 2554,36643,20333,36602,39439,31285,36604,39484,24264,40237,
-40132,40235,40130,39442,31290,36609,41735,39478,24258,40093,40186,40088,
-40181,18143,34398,34435,37029,20279,36994,18145,34400,34437,37031,20281,
-36996,39483,24263,39482,24262,39486,24266,40091,40184,40086,40179,40083,
-40176,40081,40174,40241,40136,40239,40134,34758,10627,34757,10559,39303,
-39305,34812,10557,37291,38086,37290,38094,37289,38080,38614,37288,38662,
-37287,38664,37301,38656,37473,38655,30133,20531,10622,20530,10525,18394,
-10055,18422,10067,18393,10054,26458,26696,10410,13522,15751,22319,25877,
-34645,29698,34644,29697,34660,29713,38660,37435,37440,34753,29806,34751,
-29804,34672,29725,34643,29696,34642,29695,34656,29709,34662,29715,34730,
-29783,34732,29785,34677,29730,34641,29694,34640,29693,34667,29720,34666,
-29719,37327,38096,20808,13191,18392,18391,10053,20807,20851,13231,18390,
-18389,10052,20850,20857,13235,18421,18419,10066,20855,18410,10062,18477,
-10096,20791,13179,18409,18412,10061,20790,14025,18388,13571,18387,20836,
-13215,18414,18417,10064,20835,13521,18416,34836,10553,34691,29744,13625,
-18470,13520,18480,39295,39298,12931,20529,20572,10615,12981,20574,12930,
-20528,12929,20527,12928,20526,32453,16108,27288,18450,10077, 5631,37822,
- 5630,42452,42565,18490,10101,13290,20941,13178,20789,13214,20834,34706,
-29759,34699,29752,13177,18474,20788,20787,18476,10095,13213,18479,20833,
-20832,18482,10098,13176,18538,13175,18496,32478,16282,32460,16135,13212,
-20831,13174,20786,13220,20838,13190,20806,13230,20849,32339,15631,32362,
-15847,32337,15629,39186,39188,15802,22360,25843,39259,39261,15628,22173,
-25858,39245,39244,12083,12081,10274,39719,40156,40256,40155,40255,24386,
-15813,24636,13407,30271,30269, 6595, 6594,34679,29732,14042,18435, 6251,
- 6249,13292,20943,34704,29757,34702,29755,34701,29754,13119,13118,18533,
-32482,16287,10342,39718,40154,40254,40153,40253,24396,13488,24439,13440,
-30194,30193,34714,29767,38659,37400,37405, 8700,30362,30361,30170,30169,
-37413,34739,29792,39737,10247,30192,30191,34741,29794,13117,37729,13629,
-42340,24441,13487,24438,13490,39736,10215,39748,10210,39731,10209,39726,
-10220,39735,10208,39725,10245,39733,10222,39717,10213,20954,10594,10379,
-39764,10378,39763,39762,10528,40246,40143,40245,40142,40220,40105,40219,
-40104,18564,10135,20952,13301,18563,18571,10134,20960,10373,39756,18559,
-10130,20948,13297,18558,18567,10129,20956,10205,34916,34923,37772,13502,
-37765,10203,34914,34921,37770,13500,37763,39761,10377,40172,40079,40170,
-40077,40152,40252,40151,40251,39766,10523,40161,40261,40160,40260,40233,
-40128,40231,40126,34851, 9960,34232,34090,10334, 1864,21204, 1757,32005,
- 1601,35035, 1797,31293,31509,31895,20354,29864,18274,29200,29467,37983,
- 1814,29926, 1571,18655, 1742,13858, 1881,36810,36655,37623,12692,34934,
-34778,34003, 7306,34002,29395,34001,34498,34011,34508,34000,34497,40229,
-34492,41761,34931,34775,41968,34018,34514,40243,34516,42397, 1037,41633,
- 1031,41632, 1048,42392, 1022,41635, 1050,42394, 1024,41760,41631, 1046,
-42390, 1020,41629, 2954,41628, 2992,41627, 2915,41626, 3251,41650, 2892,
-41652, 3227,41656, 2886,41654, 3221,34263, 9979,34254,34121, 9970,  936,
-20366,  931,31521,  926,34112,  921,31315,31530,31324,20375,29222,18286,
-29231,29479,36686,  916,29488,  911,18294,  906,12712,  901,36842,36677,
-36833,12703,34381,31639,34224, 2650,34226, 2616,31621, 2599, 2652,36975,
-34384,36802,29572,36797,29574,36969, 2482, 6384,37645,37150,37149,39645,
-37635,37644,37632,37148,37147,37146,37145,37144,27910, 2624, 8314, 6262,
-41716,37187,38260,37297,37347,42609,32086,38078,37639,34016, 7313,34015,
-29397,34014,34512,37090, 2481, 2480, 2630, 2637, 2505, 6421,37518,37128,
-37399,37127,37495,37126,37469,37124,37468,37513,37142,37123,37511,37462,
-37299,37756,37434,37122,37141,37121,37140,39431,36631,37412,37404,37498,
-37494,37472,10043,37461,37460,37467,10039,37458,37457,37647,37138,37137,
-37120,37510,37517,37520,37174,37505,37439,29444,37119,37136,37135,37172,
-37170,37118,37117, 2641, 2632,39414,26406,26405,27640,42564, 2623,37566,
-37286,31638,12764,12757,41733, 2622, 2621,37527,37402,37492,10045,37455,
-37454,37465,37185,37508,37437,37184,37183,26413,27645,42561,20297, 2612,
-20295, 2610,35114, 2608,35112, 2606,12763,37557,39421,18930,22264,27005,
-21417,13951,24817,38564,38257,38562,37452,38560,30007,38068,32735,32711,
-38761,32710, 9311,38760, 9310,38072,32709,38071,32901,38070,32764,17268,
-23321,24825, 9217,24780, 9216,17267,38060,16897,38059,17340,38058,17530,
-38066,27635,27312, 7608,38801,32708,27786,32093,30095,22171,15627,38645,
-30126,38644,38643, 5247, 5530,32815,38800,32814, 9381,38799, 9380,38075,
-32813,27684,30333,18707,35295,27162,27153,35405,22170,39882,38555,24446,
-22351,39919,38609,24465,35332,27193,35291,27160,27150,35403,42950, 8731,
-42949, 8730,42948, 8729,42947, 8728,35377,32076,40005, 8482,40002, 8479,
-35541,14640,35540,14639,14313,27249,27251,17038,23168,24827, 9024,24782,
- 9023,17037,38063,27021,16563,38690,23265,21508,37451,38084,32336,32515,
-15626,32520,15625,32511,15677,32508,15624,32529,16280,38571, 5200,32335,
-15623,35539,14638,14662,14637,35552,14666, 8626, 8629,14668,14708,18932,
-22271,27007,21421,13942,24829,30360,42780,35108,30005, 5647,35143,30085,
- 5665,22165,18820, 5605, 5604,35347,32111,32506,15929, 6955, 5331,40061,
-43546,42762,18769, 6937, 5272, 6936, 5271, 6935, 5270, 6933, 5268, 5629,
-22268, 6939, 5274,22180,22164, 6946, 5281,25809,32240,18748, 8323, 8156,
- 8316, 8158, 8320, 8153, 5580,35374,32097,35335,32096,35334,32095,32513,
-15882,32367,15881,38759, 9309,43061, 8932,36478, 8059,38798,38115,38114,
-38113,18791,18790,18789,30347,37642,37515,37450,38130,37755,38112,38111,
-27909,27639,37569,38128, 3646,22685,16184, 6338, 1522,12640,12645,15371,
- 6342, 1510,12642,12647,15373, 6782, 6781,14798,21699, 6344,14796,21697,
- 6341, 7801, 1555, 7440,12375, 7443, 8012, 6107,22026,27582, 1592,15367,
-28052, 1693,16277,22744, 1658, 1489, 7435,12373, 7437, 8010, 6105,22021,
-27580, 1940,15362,28050, 2005,16275,22742, 2040, 7442,22025,15366, 7439,
-22023,15364, 7426, 1562,12340,12333,12338,12331, 5804, 3214,12342,12335,
- 6027, 3514, 7971, 3758,27540,28011, 7377, 3656,21970,22689,15298,16194,
-15505,12533,15504,14938,16379,14982,16012,12532, 6752, 1497, 6749, 1494,
-41395,41428,41393,41426,41397,41430, 7673, 2785,12396, 3807, 8862,12509,
-12436,12393, 5370, 3094,12439,12401, 5365, 3088,14737,14216, 5440, 3335,
- 3128, 5405,14200,14716, 3087, 5364,14181,14664, 7871,12398, 4411, 4409,
-12435,20087, 6593, 3074, 5351,14171,14636,12448,20094, 6591,12546,15118,
-21825, 7236,12545,20135, 6451,12407,12544,12406,12388,12506, 3804, 8859,
-12522,12505, 7664, 2776, 7671, 2783, 7717, 2884,41403,41434, 6017, 3465,
- 7961, 3725,27530,27989, 7364, 3614,21959,22662,15287,16154,15051,21757,
- 7169,12568,20156, 6382,14937,21735, 6848,41461,41460,12427,20084, 2755,
-31205,31204,16392,12489,12488,12426, 4417,13481, 2225, 7635, 2415,15621,
- 7167, 7858, 5873,21755,27302, 2239,15049,27613, 2245,15620,22163, 2261,
- 7304, 7938, 5973,21879,27421, 2241,15198,27830, 2247,15967,22504, 2264,
- 7251, 7895, 5900,21832,27361, 2237,15125,27703, 2243,15788,22342, 2257,
-16032,12416,20081, 7526,31201,12415,12414,15686,15952, 2667,15619, 7166,
- 7857, 5872,21754,27301, 1949,15048,27612, 2014,15618,22162, 2049,12423,
- 7223, 7885, 5891,21816,27344, 1939,15105,27679, 2004,15743,22302, 2039,
-12404, 7351, 7953, 6005,21951,27517, 3446,15276,27968, 3715,16106,22638,
- 3587, 2256,21296,12567,13748,20155, 2235, 2255,21295,12566,13747,20154,
- 2234,12560,20148, 6450,41459,15243, 3788,41450,15617,41420,41458,12425,
-20083, 2209,31821,12497,12496,15117,21824, 7235,12562,20150, 6449, 2227,
- 2223,12487,20114, 4245,12485,20112, 4243,12875,20501, 4242,14245,41418,
-41456,12559,20147, 2220, 6016, 3464, 7960, 3724,27529,27988, 7363, 3613,
-21958,22661,15286,16153,12500,12432, 7405, 7990, 6044,21993,27559, 1591,
-15324,28021, 1692,16231,22715, 1657,15316,41467, 2217,12430, 7400, 7988,
- 6042,21988,27557, 1938,15318,28019, 2003,16229,22713, 2038, 7404,21992,
-15323, 7402,21990,15321, 1457,21287,12552,13738,20140, 1453,41444,15320,
-41469, 1463,15615,15612,16030,12413,20080, 1444,12412,20079, 1443,31824,
-31818,12565,20153, 2233,12484,32070,12483,12482,13480,13746,21294, 2254,
-12481,20111, 4241,12480,20110, 4240,12492,20116, 6512,12479,20109, 6380,
- 2268,22161,15610,15609,22160, 2259,15966,22503, 2263,12420,12419,15685,
-22239, 2251,12495,12558,20146, 2219,12554,20142, 1460,15103, 2216,41454,
-12422,41409,41438,15245, 3790,41453,11020,40855,30973,11578,11577,11591,
-11575,11589, 4564,11583,11582, 2666,11586,11585,12828,12826, 5829, 3832,
-12874,12870,20498, 3812,12869,20497, 3811, 3831, 5828, 3830, 5827, 3834,
- 5831,12877,12879,12873, 7468,22050,15416, 2531, 5823, 3818, 3836, 3843,
-12884,20506, 3875, 3905, 5843, 3898, 5839, 3900, 5841,12888, 7474,22057,
-15423,12890, 7476, 8024, 6122,22059,27597, 3926,15425,28070, 3966,16337,
-22799, 3955, 6117, 1968, 8021, 2075,27594,28066, 7460, 2108,22041,22773,
-15405,16310, 7454, 8017, 6112,22034,27590, 1937,15390,28062, 2002,16302,
-22767, 2037, 6115, 1983, 8019, 2091,27592,28064, 7456, 2124,22037,22769,
-15401,16306, 7450, 8015, 6110,22032,27588, 1954,15388,28060, 2019,16293,
-22756, 2054, 6109, 1977, 8014, 2084,27587,28059, 7449, 2117,22031,22755,
-15387,16292,12895, 7488, 8031, 6129,22071,27604, 1590,15438,28077, 1691,
-16344,22806, 1656, 3810, 3826, 3829,12893, 7483, 8029, 6127,22066,27602,
- 1936,15433,28075, 2001,16342,22804, 2036, 7487,22070,15437, 7485,22068,
-15435, 5838, 3897, 3886, 3910, 3915, 3877, 3891, 3902, 3874, 3889, 3896,
- 3873, 3888, 3895, 3879, 3893, 3904, 6124, 3932, 8026, 3972,27599,28072,
- 7479, 3961,22062,22801,15428,16339, 3884, 3908, 3913, 3809, 3825, 3828,
-12865,43305,43632,43303,43630,43300,43627,43299,43626,14287,43298,43625,
-43296,43623,14936,21734, 6847,22080,14935,22079,19102,22101,19101,14934,
-43294,14933,43621,14932,14931,15462,15475,15457,15456,14956,14950, 6852,
- 6846, 6845,15485,14333,14993,14992,14981,15007,15006,15005,15022,15014,
-15010,15009,15004,15025,14351,15024,15483,15020,14349,15012, 5524, 1639,
-14997,14337,14991,14332,14980,14979,14978,14995,14335,14984, 5519, 1906,
-14339,15000,14999,43316,43637,15003,15479,14306,43314,43635,15041,14354,
-15040,15493,15044,14356,15043,15495, 6866,14914,21725, 6369,14916,21727,
- 6371,12858,20488, 6820,12872,20500, 3817, 3953,22796,16334,12883,20505,
- 3872, 3952,22795,16333, 3951,22794,16332, 3865,22785,16323,19032,19100,
-38551,19030,19099,38548,30001,29999, 6915, 4625, 4602,35104,29997,15608,
-22159,15607,22158,15821,22375, 3127, 3334,35145,30087, 3314, 3325,15606,
-27585, 4632,15846,22390,40060,43545, 2385, 2530, 2543,40009,43415, 2964,
-38234,30168,30190,40054,43537,30277,23167,19097,40033,43462,38797,32707,
- 2929,30189,40458,23320,17266,25101,23166,17036,40446,23349,17310,25097,
-23198,17075,38926,38925,38924,38923,39028,39026,38922,38921,38920,38919,
-39041,39043,40452,40462,40454,40445,40444,40442,40449,32588,32587,32586,
-40456,23339,17294,25099,23187,17062,32922,32788,16896,17339,32594,40441,
-16617,25096,16879,23055,40439,16911,23063,40438,40437,23400,17527,16871,
-23049,40436,40435,22906,16587,40434,22905,16586,16585,22904,40433,40432,
-22903,16584,16868,23046,40465,16590,22909,40464,16609,16607,16594,43731,
-43730,40431,40430,39039,39038,39037,39036,16616,38937,38936,39243,39241,
-38935,38934,39292,39288,17173,16615,16752,16614,16613,16612,16744,16611,
-16789,39239,39238,16852,17211,32900,32763,16623,16621,11076,11075,39237,
-39236,39278,39277,39276,39275,11952,19862,25769,25748,19855,11942,32899,
-32762,17499,17451,17325,25842,21445,14034,17484,16791,25870,23275,17187,
-25841,23273,17185,25876,23263,17165,11948,19858,25763,13414,13413,39216,
-39215,39197,39196,39291,39287,12478,12477,13373,13336,13335,13368,12031,
-12030,39235,39234,12108,12107,39284,39283,11941,11940,19854,19853,27900,
-27491,25747,25746,22542,21917,16005,15236,39233,39232,39203,39201,27879,
-27470,27855,27446,27838,27429,25904,25903,25745,25955,25902,18666,42563,
-25759,25755,25998,27775,25808,27637,27015,27615,41158,41157,27836,27427,
-27049,27611,39207,39211,11951,11950,19861,19860,27835,27426,25768,25767,
-22508,21883,15971,15202,25766,11956,11954,19866,19864,27875,27466,25778,
-25775,22528,21903,15991,15222,39221,39219,39224,39223,39290,39286,39231,
-39230,39281,39280,14930,14929,14847,14954,14316,21588, 3816,14319,21591,
- 3882,14318,21590, 2882,14948,14946,14294,21570,  893,14296,21572,  964,
- 8262, 8413, 8261, 8412, 8253, 8404, 3081, 5860, 3167, 5859, 3175, 8260,
- 8411, 1395, 1411, 1414,21584,14311,14347,21606, 1403,14305,21581, 1409,
-14342,21602, 3815, 8259, 8410, 8258, 8409, 8252, 8403, 1406, 1393, 1111,
- 1117,14703,14648,14660, 8187, 8350, 3080, 2322, 5710, 3166, 5718, 3174,
-11162,11147,19368,19359,25127,25118, 6642, 2749, 7102, 3062, 5755, 3209,
-11161,11146,19367,19358,25126,25117, 6623, 2705, 7086, 3036, 5723, 3180,
-14635,11168,11153,19372,19363,25131,25122, 6590, 2665, 7054, 2999, 5678,
- 3134,11160,11145,19366,19357,25125,25116, 6600, 2674, 7059, 3004, 5683,
- 3139,14894,16401,15605,15603,14362,15842,14927,16368,43326,42946,43324,
-42944,43321,42941,42939,43319,43255,43588,43263,43596,43262,43595,14473,
-21643, 6260,30231,32200,38696,30229,38545,30262,30167,38588,30018,30166,
-30012, 3276, 3434,43569,43236,43566,43233,16329,22791, 6234,16050,22573,
- 6247, 7829, 7736, 7585, 7869, 7600, 6756, 7794, 7740, 6576,14475, 6583,
- 7597, 4175,14479, 4170,15601,22157, 6792,15140,15600,22156, 7261,14360,
- 2881, 2805, 5527, 2986, 2945, 2937, 2928, 2927, 2384, 2977,38654,30261,
- 8287, 8126, 8281, 8116,  830, 8286, 8125, 8285, 8124,  824,  827, 8303,
- 8131, 8302, 8123, 8307, 8101, 8300, 8301, 8120, 8121, 8299, 8119, 8297,
- 8118, 8295, 8104, 8292, 8129, 8306, 8103, 8308, 8106,30038,30035,38259,
-30315, 8425, 8427,32057,14884,13417,15599,22155, 6511,15656,22195, 7821,
- 6331, 6427,15712, 6424, 7414,15705,22257, 6844, 5887, 5799,16243,14926,
-21733, 6841,15598,15965, 6473,22154,15597,15868,15596,15840,22386, 6843,
-14445, 5911, 5635,14453,14444,14448,15830,15844,22388, 6840, 5913, 5628,
-15833,15827,15826,14839, 7575,15595, 2872, 2741,14925,21732, 6839,15594,
-22153, 2833,15593,22152, 2835,15592,22151, 2438,15591,22150, 2432, 2664,
-15875,22409, 2445, 2717,15589,22148, 7839,16355,16374,15782,22336, 7823,
-16357,22809, 7240,16207,22702, 7765,14756,14227,14755,14226,14754,14225,
-16218,16217,43513,43174,43510,43171,16224, 6719,21546,14235,16216,22706,
- 6725,14763,14230,16220,15588,22147, 7390,15933,22467, 7388,43505,43166,
-43502,43163,16209,22704, 7767,15811,22366, 7394,16146,22656, 7387,16145,
- 3605,22655,16144,15587,22146, 7231,15855,16035,15854,16034, 2839,15860,
-22399, 2838,15859,22398, 7229,15586,22145, 7501,30128,38653,30132,38652,
-38681,38651,30131,13334,16069,22590,16078, 6270,22599, 6269,16181,12927,
-27932, 6914, 6960, 5414, 8057, 5957, 6506, 6505,18941,18940,10538,10537,
-16179,13333,16170,13332,16388,15017, 7588, 6306, 5236, 5811, 5851, 5869,
- 6740, 7127, 5798, 6468, 6996, 5564,14405,14018,14404,14017,15770, 6466,
- 6994, 5562,14450,14447,15769,15768,15767,16373,22815, 7228,14407,14020,
-15772,16122,22643, 7227,14409,14022,14443, 5547, 5223,32069,27917,16038,
-22561,16037, 6291,22560, 6288,27915,15874,22408, 4435,15801,22359, 4459,
- 6574,22144,15585, 6562,22358,15800, 6582,22406,15872,16011, 5655, 4128,
-15584,22143, 4437, 5660, 4093,14634,14633,14632,14631,43483,18998,16048,
-22571, 6258,43478,43131,43475,43128, 6707,21367,13906,16183,22684, 4239,
-14678, 6689,21336,13835,14680,16124,13331, 5770, 5919,14672,14671, 5768,
- 5868, 5766, 5907, 6561, 4189,15911,22448, 6838, 5943, 5627, 6442, 6987,
- 5542,15703, 5594, 5416, 5598, 6075, 7011, 7997,28033,27566, 6496, 7417,
-22727,22005,16257,15340,15583, 5600, 5867, 7013, 7854,27610,27300, 6498,
- 7163,22142,21753,15582,15047, 5945, 5645, 6724, 7116, 5787, 5602, 5947,
- 7015, 7918,27754,27388, 6502, 7285,22459,21851,15927,15157, 5597, 5962,
- 7010, 7924,27798,27414, 6495, 7289,22486,21868,15951,15185,15455,16352,
-15503,16351,16350,15513,22106, 7835,14844,21717, 7820,14886,21720, 7819,
-15410,22044, 7818,14825,21708, 7817,14824,21707, 7816,16199,22692, 7815,
-14883,14823,43587,43254,43586,43253, 7825, 2663,16362,22811, 1398,16367,
-16366,43289,43616,43594,43261, 2414,16372,22814, 1155,16371,22813, 2421,
-16359,43280,43613,43252,43585,14838,16365,16364,43278,43611,43275,43608,
-43273,43606,43291,43618,15447,38524, 8682,15449,38526, 8684,43271,43604,
-43270,43603,43598,43265,43259,43592,16370,43269,43602,43017,43408,15858,
- 3596,22642,16121,15857,22397, 2837,14234,21545, 6718, 5782,14743,21688,
- 6318,16198,16215,16304,16214,16197,16213,16206,22701, 7764,16205,22700,
- 7763, 6717,21544,14233,16291,16212, 5810,43103,43458,40124,14170,40123,
-14169,30188,30187,38695,30186,38694,30185,32066,32060,14630,14629,14628,
- 3343, 7680,39970,32449, 5425, 7677,39967,32446, 5422, 8440, 8451, 3712,
- 3440, 3696, 3415, 3589, 3585, 3711, 3439,14244,43101,43456, 6671,21079,
-13519,15581,16237,43099,43454,43111,18997, 3710, 3438,43109,18995,43123,
-43470,43120,43467,16101,22636, 3583,15932, 3604,16312,16142,14805, 5765,
- 5233,43113,43460,16120, 3595,16119,22641, 3594,16118,22640, 3593,14803,
-16047,22570, 3522,16046,22569, 3521, 6706,20785,13173, 6447,21556,14255,
- 6445,22725,16252, 6333, 6444,14418,14028,14442,15337, 5596, 6067, 7009,
- 7995,28031,27564, 6494, 7412,22724,22003,16251,15336, 6435,21554,14253,
- 6438,22722,16249, 6434, 7416,14753,14387, 5540, 6065, 6985, 7993,28029,
-27562, 6437, 7410,22721,22001,16248,15334,15301,21973, 7380, 6030, 5803,
- 6029, 5775, 6743, 7129, 5801, 6731, 7122, 5793, 6727, 7118, 5789,14760,
- 6032, 5777,14746, 7386,21979,15307, 5781, 5452, 6034, 5779, 6723, 7115,
- 5786, 5795, 6039, 7124, 7983,28016,27552, 6733, 7396,22710,21984,16226,
-15312,14752,14748, 5791, 6037, 7120, 7981,28014,27550, 6729, 7392,22708,
-21982,16222,15310,43027,14465,21641, 6257,16327,22789, 6256,32237,15002,
-14464,14463, 6589, 6484,21453,14051,16246,14469,14468,15689,15950, 6254,
-15580, 5571, 5866, 7001, 7853,27609,27299, 6481, 7162,22141,21752,15579,
-15046,14751,14471, 5569, 5889, 6999, 7883,27677,27342, 6479, 7221,22300,
-21814,15741,15101,16326,22788, 3938,43577,43244,43574,43241, 6819,21366,
-13905, 6818,20784,13172,16331,22793, 4238, 5813, 3987, 6796,21319,13807,
- 5817, 4015, 5809, 4012, 6805,20713,13116, 6807, 7147, 5834,20783,26609,
- 3845,13171,26853, 3838,13666,21222, 3820, 6790, 7138, 5808,20805,26616,
- 1953,13189,26857, 2018,13674,21227, 2053, 5807, 1976, 7137, 2083,26636,
-26874, 6789, 2116,20848,21247,13229,13701, 5821, 1967, 7144, 2074,26629,
-26867, 6800, 2107,20830,21239,13211,13692, 6794, 7140, 5815,20782,26608,
- 1935,13170,26852, 2000,13665,21221, 2035, 5819, 1985, 7142, 2093,26647,
-26885, 6798, 2126,20870,21256,13245,13708,16325,22787, 3937, 3940, 3946,
- 3921, 3959, 3970, 3930, 3950, 3964, 3924, 3936, 3944, 3919, 3949, 3963,
- 3923, 3957, 3968, 3928, 6835, 7154, 5848,20903,26670, 1589,13261,26895,
- 1690,13717,21268, 1655, 3935, 3943, 3918, 6830, 7152, 5846,20898,26668,
- 1934,13256,26893, 1999,13715,21266, 2034, 6834,20902,13260, 6832,20900,
-13258,16315,22777, 3856, 3855, 3861, 3850, 5836, 3848, 7149, 3841,26628,
-26866, 6809, 3823,20829,21238,13210,13691, 3934, 3942, 3917,14837,21713,
- 6353,22100,14836,14835,14846, 6851,21738,14952, 6837,21731,14924,15502,
-15501,15516,15528,15540,14882,15536, 5864, 1638,16378, 5858, 4127, 5857,
- 1905, 6854,21740,14967,14881,15534,14878,14906,15544,15546, 6862,21746,
-15035, 6864,21748,15037,14867,14908,14897,14891,14888,14899,14875,14880,
-16098,16095,22634,22631, 3578, 3575,22629, 3573,27960, 3708,22608, 3555,
-27947, 3688,22606, 3553,27945, 3686,40118,14110,30165,38687,30164,32068,
- 3274, 3432, 3268, 3426,27965,27963,14626, 5349,27940,35536,14625,35538,
-14627,35535,14624,35534,14623, 6664, 6663, 4303,21444,14033, 6560,21443,
-14032, 5738, 3196, 2528, 2527, 5644, 7042, 8345, 8183, 2526, 3323, 3317,
- 5640, 7038, 6931, 5266, 5641, 7039, 2524, 3313, 7732,39979,32435, 5362,
- 7729,39976,32432, 5359,22612, 3559,27951, 3694,22611, 3558,27950, 3693,
- 7630,39953,32422, 5322, 7627,39950,32419, 5319,35533,14622,35532,14621,
-35531,14620,35545,14653,35530,14619,35544,14652,10716,10713,10708,10705,
-35527,14616,35529,14618,10710,10707,10593,10592, 2702, 2690,18867,18855,
-10470,10458, 5741, 3199, 7099, 3049,24735,24575, 5733, 3191, 3272, 3430,
- 5735, 3193, 5734, 3192, 7096, 3046,24732,24572, 5731, 3189, 7094, 3044,
-24730,24570, 5728, 3186, 7091, 3041,24727,24567, 5715, 3172, 7083, 3029,
-24724,24564, 3270, 3428, 2700, 2688,18865,18853,10468,10456,43482,18834,
- 5709, 3165, 5704, 3161, 5626, 4113, 5855, 4085, 5662, 3986, 5701, 3158,
- 5693, 3150, 7077, 3022, 7069, 3014,24716,24556,24708,24548, 6620, 2699,
- 6612, 2687,18985,18864,18977,18852,10613,10467,10605,10455, 5697, 3154,
- 5689, 3146, 7073, 3018,22604, 7065, 3010,24712,24552, 3551,24704,24544,
- 6616, 2694, 6608, 2682,27943,18981,18859,18973,18847, 3684,10609,10462,
-10601,10450,22603, 3550,27942, 3683, 2696, 2684,18861,18849,10464,10452,
- 5698, 3155, 5690, 3147, 7074, 3019, 7066, 3011,24713,24553,24705,24545,
- 6617, 2695, 6609, 2683,18982,18860,18974,18848,10610,10463,10602,10451,
-28004, 3126, 3060, 3379, 3125, 3123, 3122, 3333, 3066, 3383, 3065, 3382,
-10507,18914,10506, 2875,18913, 2874, 3304, 3493, 3302, 3491, 3301, 3490,
- 2746, 2745,18889,18888,10490,10489, 2744, 2743,18887,18886,10488,10487,
-14522, 5654, 2538,15766,15765,14397, 8138, 8310, 5559, 5546, 5545, 5222,
- 5707, 5221, 5717, 5544, 5220,16422,16417,16419,43666,43661,43664,43659,
-43656,43654,43652,43650,43643,43648,43641,43646, 1721, 7573, 1718, 7570,
- 7711, 2859, 7706, 2844,16494, 7690, 2800, 7688, 2798, 7687, 2797, 7709,
- 2857, 7704, 2842,16484, 7694, 2813,16502, 7685, 2795, 7714, 2864, 7684,
- 2794,16491,16490, 7693, 2812, 7683, 2793,16534,16541,16532,16539,16547,
-16552,16489,16551,32547,16545,32549,16550,16549,32544,16488,32584,32596,
-16580,22899,28140,32583,38724,43714,22901,28142,38722,43712,16582,32581,
-16671,16593,16569,16412,16411,16410, 7682, 2792, 7692, 2811,16524,16526,
-16408,16407,16430,16406,16509,16506, 3645,22871,16497,16427,16426,22823,
- 4558,16425,22822, 4556,16592,16500,16511,16465,16469,16467, 7701, 2822,
- 7699, 2820, 7697, 2818,16504,16951,23098, 8930,32714,16751,16750, 4324,
-16746,32898,32761, 9180,23289,17210, 6722,23032,16851,17209,23288, 9179,
-17215,23293, 9187,16839,16989, 6471,23037,16857,16836,16987,16831,16984,
-43775,43804, 4361, 9178,17191,23279, 9156,17164,23262, 9137,17189,23277,
- 9154,16785,17184,23272, 9152,17183,23271, 9151,17163,23261, 9136,16793,
-17260,23314, 9210,17259,23313, 9209,17258,17257,17256,17540,17520,16895,
-16894,17384,16916,17373,17084,23204, 9040,17546, 4126, 8890, 8929,23097,
-16950,16949,23096, 8928,16948,23095, 8927,16947,43871,43830,43869,43828,
-17472, 6376,22977,16757,16765,22969, 7161,17449,16799,17459,32713,16749,
-16748,17470,17447, 8952, 8951,16830,23015, 7448,16850,23031, 6788,32760,
-17208,23287, 9177, 8970, 8969,16809,22996, 4555,16808,22995, 6317,16849,
-23030, 7159,16829,23014, 6374,16848,23029, 7446,16828,23013, 6786,17207,
-23286, 9176,16782,16847,23028, 7215,16827,23012, 6419,16779,17480,32732,
-32754,32731,16784,17182,16768, 9189,43807,43778, 4268,17176,17161,43867,
-43826,17160,43865,43824, 9208,23312,17030,17255,23160, 9017, 9207,23311,
-17029,17254,23159, 9016, 9226,23343,17066,17298,23191, 9030,17028,17253,
- 9206,23310,17252, 9205,23309,17251,17027,23158, 9015,17250,23308, 9204,
-17026,23157, 9014,17249,23307, 9203,17248,23306, 9202,17025,23156, 9013,
-17247,16867,17519,16893,16892,16891,16890,16902,16865,23045, 6470,16873,
-16870,23048, 6378, 6190,23395,17522,16864,23044, 4525,16883,23059, 4509,
-16914,23065, 4508, 9201,23305,17246, 9249,23355,17360,17420,23377, 9272,
-17138,23241, 9091, 5871, 7856, 7524, 7165, 8042, 6140,16927,17143,23076,
-23246, 7522, 9096,28180,28208, 8040, 9120, 6138, 8876,17436,23391, 9286,
-17592,28242, 9307,23430,28276, 8912, 7520, 8038, 6136,17136,23239, 9089,
-17430,23386, 9281,17586,28237, 9302,23425,28271, 8907, 7518, 8036, 6134,
- 9269,23374,16924,17140,17417,23073,23243, 7516, 9093,28177,28205, 8034,
- 9117, 6132, 8873,17372,16889, 9229,23348,17074,17309,23197, 9034,17073,
-23196, 9033,16881,23057, 4517,16670,16574,22893,28134,32575,38716,43706,
-22895,28136,38718,43708,16576,32577,32601,16573,22892,28133,16625,22919,
-28152,16946,23094, 8925,16945,23093, 8924,38796,32704,17444,17443,17498,
-17477,17504,17488,17490,17442,17441,16795, 3581,22981,16775,16774,22980,
- 4507, 3580,23011,16826, 8943,23102,17179,16957,23268, 9147,32748,32893,
- 3864,22994,16807,16806,22993, 4539, 2179,23010,16825,17509,16846,23027,
- 2193, 2184,23020,16838,16855,23035, 2197, 2182,23018,16834,16811,22998,
- 4506,16813,23000, 4524,16982,16819,43800,43771, 9166, 1673, 9200,23304,
-17024,17245,23155, 9012, 9228,23347,17072,17308,23195, 9032, 9224,23341,
-17064,17296,23189, 9028,32759,32897,17214,23292, 9186,17206,23285, 9175,
- 3948,23026,16845, 3644,23025,16844,43803,43774, 9174, 2192,17159,23260,
- 9135, 9134,23259,17158,17440,17514,17512,16860,23040, 2191,17000,23134,
- 8995,16998,23132, 8993, 3591,23024,16843,17222,16994, 9192,23296,17218,
- 9194,23298,17220,17507,16992,23127, 8987,16862,23042, 1328,23154,17244,
-17023,17474,17243,17022,17497,17021,17486,17439,17496,17057,17093,17020,
-17019,17117,17352,17371,17370,17376,17369,17390,17379,17392,17109, 8894,
- 1637,17338, 8889, 1904,17356,17103,17438,17401,17126,17403,17128,17409,
-23364, 9261,17411,23366, 9263, 8923,23092,16944, 8922,23091,16943, 9133,
- 2862, 9144, 2791, 9142, 2810,  838,22973,16764,16761,22976,  840, 9131,
- 2790,16736,16734,17324, 8978,16842,23023, 3814, 9107,23257,17154,17107,
-23220, 9070, 9076,23226,17115, 8968, 8967,23119,16978,16803,22990, 3881,
-16802,22989, 2880,32747,16805,22992, 1327,16816,23003, 1334, 9165, 8962,
- 8961, 1344, 9163, 8966,23118,16977, 8964,23116,16975,17217,23295, 9191,
- 9011,23153,17018,17017,23152, 9010,17120,23229, 9079,17082,23202, 9038,
- 9062,23213,17099,32758,32757, 8984, 8982, 8977, 8976, 2171, 2170, 2178,
-23009,16824,43802,43773, 9173, 2190, 9199,23303,17016,17242,23151, 9009,
- 9198,23302,17015,17241,23150, 9008, 9196,23300,17239,23148,17238,17237,
-17236,17235,17234,17233,17232,17231,17518,17517,17172,17337,17336,17335,
-17334,17345,17205,32896,17333,32921,28257, 9056,43837, 9245, 9395,28250,
- 9329,43796, 9392,28197, 9326,43902,28224, 9053,43895, 9242,43834, 9049,
-28254, 9238, 9388,43793, 9322,28247, 9385,43899, 9319,28194,43892, 9046,
-28221, 9235, 9232,23352,17089,17323,23207, 9043,17321,17320,32773,32680,
-32679,32772,32685,32778,32683,32775,32792,32688,38823,32771,17516,17539,
-17543,17204,23284, 9172,17013,23147,17012, 9006,23146, 9005,17011,17010,
-23145,23144, 9004, 9003,17009,17007,23143,23141, 9002, 9000,17081,17080,
-23201,23200, 9037, 9036,38830, 9416,32848, 9415,32847,38829, 9215,23319,
-17035,17265,23165, 9022, 9213,23317,17033,17263,23163, 9020,17203,23283,
- 9171,16878,23054, 2188,17529,23402, 1325,17526,23399, 9170,16876,23052,
- 1324,17525,23398, 2187, 1177, 1188, 1160, 1185, 1167, 1170,32806,32697,
- 1220, 1215, 1246, 1202, 1250, 1232,32811,32702,17134,23237, 9087,17427,
-17583,23383,23422,28234,28268, 9278, 1184, 9299, 1187, 8904, 1176,16926,
-23075, 1159,17142,28179, 1166,23245,28207, 1169, 9095, 9119, 8875, 9275,
-23380,17423, 9277,23382,17426,17148,16931,23251,23080,28212,28184, 9101,
- 1236, 9124, 1240, 8880, 1226,32808,32699,38792,38755,43819,43784, 9280,
- 1245, 9301, 1249, 8906, 1231,23385,23083,28236,28187, 9343, 1254, 9363,
- 1256, 8883, 1210,38860,38757,43860,43786, 9458, 1260, 9471, 1262, 8911,
- 1219,17429,16934,28215,28270, 9127, 1208, 9376, 1258,32880,32701,43821,
-43907, 9306, 1214, 9480, 1264,28241,28275, 9365, 1222, 9378, 1242,43862,
-43909, 9473, 1228, 9482, 1252,17153,17585,23256,23424, 9106, 1197,32810,
-32931,38794,38872, 9285, 1201,23390,23429, 9345, 1204,38864,38874, 9462,
- 1206,17435,17591,32884,32933,17434,17590,23389,23428,28240,28274, 9284,
- 1200, 9305, 1213, 8910, 1218,17433,17589,23388,23427,28239,28273, 9283,
- 1199, 9304, 1212, 8909, 1217,17147,16930,23250,23079, 9100, 1235,28211,
-28183, 9123, 1239, 8879, 1225,16933,23082, 1244,17152,28186, 1248,23255,
-28214, 1230, 9105, 9126, 8882,17145,23248, 9098,17151,23254,17150, 9104,
-23253, 9103,38863, 9461,32883, 9460,32882,38862, 1316, 1319, 1337, 1313,
- 1340, 1322,17098,23212,17097, 9061,23211, 9060,38834, 9427,32857, 9426,
-32856,38833,17367,17366,17365,17364,17363,16908,32794,32925,17425,17582,
- 9448, 9447, 1380,17560,23409, 1373,38849, 9446,32872, 9444,32870,38847,
-38841, 9434,32864, 9432,32862,38839,38837, 9430,32860, 9429,32859,38836,
-32691,32796,17106,17105,23219,23218, 9069, 9068,38844, 9439,32867, 9438,
-32866,38843, 1370, 1378, 1348, 1375, 1356, 1362,16910,23062, 2186, 1385,
-23412,17568, 9252,23358,17387, 1382, 1390, 1353, 1387, 1359, 1365,32693,
-32800,17114,23225,17113, 9075,23224, 9074,38853, 9453,32875, 9452,32874,
-38852,17332,17331,17330,17329,16888,32787,32920,17432,17588,17358,17556,
-17351,17553,17389,17570,17378,17562,17382,17564,17394,17572,17362,17558,
- 9442, 9441, 9424, 9423, 1368, 1108,13330,13329,13400,13397,17078,17315,
-17071,17307,15133,13770,13518,14434,15468,14972,15521,14863,13769,14436,
-15135,13517,13768,14811,15395,13516,13767,14420,15116,13515,15518,14860,
-15465,14965,13805,14816,15398,13568,17124,17405,17070,17314,15369,14792,
-14790,15359,14821,15430,15491,14910,14770,15314,12926,13328,15520,14971,
-13327,12925,13326,12924,13325,12923,15542,15031,13469,13253,14815,15397,
-15464,14859,17349,16906,17347,16904,14873,16397,14871,16395,14532,13324,
-14527,13323,14525,13393,14530,12922,14535,12984,14537,12921,14517,12920,
-16382,14987,16384,14989,16022,13322,16017,13321,16015,13395,16020,12919,
-16025,12986,16027,12918,16008,12917,15775,15777,14402,14400,17398,14510,
-14903,14858,14508,14424,14819,16961,17305,14412,14855,13876,13883,13881,
-13873,14422,14414,14416,14809,13946,13944,13878,13889,13887,15029,14923,
-13451,14963,13840,13900,13831,13803,13842,13981,13779,13829,13959,13950,
-13971,13964,13962,13967,16068,22589,16077, 4261,22598, 4260,16066,22587,
-16075, 4259,22596, 4257,15256,21934,15263, 7336,21941, 7343,15254,21932,
-15261, 7334,21939, 7341,12916,20525, 4255,13079,20683, 4314,12915,20524,
- 4254,12914,20523, 4253,13081,20685, 4316,13320,20978, 4434,13419,21040,
- 4468,13319,20977, 4433,13318,20976, 4432,13317,20975, 4431,12913,20522,
- 4252,12912,20521, 4251,12911,20520, 4250, 4301,22781,16319,15412,22046,
- 7464,12910,20519, 6816,12909,20518, 6634,12908,20517, 6661,12907,20516,
- 6459,12906,20515, 6453,12905,20514, 6802,13316,20974, 6632,13315,20973,
- 6637,13314,20972, 6628,13313,20971, 6457,16321,22783, 4249,16308,22771,
- 4248,16203,22698, 6715,15914,22451, 6492,15305,21977, 7384,15303,21975,
- 7382,15155,21849, 7283,15414,22048, 7466,13006,20610, 6813,15403,22039,
- 7458,13009,20613, 6659,16201,22696, 6713,13403,21030, 6639, 8092, 8571,
- 8574, 8095,38612,37449,38626,37448,38624,37446,38541,37444,14814,17313,
-17312,12904,12903,12902,12901,13083,13012, 7107, 5350,42779,42777, 4169,
- 4393,14834,14922, 4390, 4349, 4424, 4270, 4347,18969,43135,27930,27928,
-27921, 4601, 4600, 4598,27511,27509,27504, 7785, 6772, 6679, 6487, 6688,
- 8090, 8569,30259,35323,30254,35317,30252,35315, 8089, 8568,18967,43133,
-30251,35314,30244,35307,30257,35321,30249,35312,15087,21797, 4505, 4504,
- 4512, 4579, 4577, 4514,29692,34639,29691,34638,29707,34654,29717,34664,
-29799,34746,29801,34748,29740,34687,13958, 6932, 5267, 6930, 5265, 4503,
- 4502, 4501, 4520, 4519, 4551, 8363, 2934, 2926, 2974, 2970, 8370, 2925,
- 2383, 2391, 2382, 8368, 8347,30250,35313, 8343, 7722, 7720,19096,19094,
-10709,10706, 4500,22238,15684, 4499,22236,15681,13514,21078, 7566,12900,
-20513, 6779,12899,20512, 6826,12898,20511, 6737,17122,23231, 9081, 9066,
-23216,17102,17111,23222, 9072, 9026,23185,17056,17095,23209, 9058,12897,
-20510, 7806,15550,22120, 7851, 7507,22090,15478,15533,22114, 7845,15538,
-22116, 7847, 7499,22084,15461,15530,22111, 7841,15711,22261, 6742,15708,
-22259, 7774, 7581,22380,15829,15836,22382, 7583,15923,22457, 7564, 7593,
-22241,15688,15442,22075, 7492,15489,22096, 7513,15481,22092, 7509, 7837,
-22108,15515,17005,23139, 8998, 8997,23138,17004,15500,22099, 7832, 7497,
-22078,15454,15453,22077, 7496, 7831,22098,15499,15473,22087, 7504, 4529,
-22140,15578,13822,15577, 4527,22139,15576,13817,15575,15724,13513,15574,
-22138, 4179,15573,13583,14251,15710,15572,22137, 7776,14257,15571,16242,
-15707,15570,22136, 6745,16254,15569,15832,15835,15702,15922,15568,22135,
- 6500,15567,15925, 4188, 4538,22455,15920, 4537,22454,15919, 7591,22453,
-15918,15917,13613,15916, 7595,22134,15566,14065,15565,17228,14833, 4173,
-13188,20804, 4365,13228,20847, 4386,17227,13237,20859, 4389,13169,20781,
- 4360,14099,13827, 4534,13603,21164, 7590,14068,14024,13570,13209,20828,
- 4382,13512,13412,13411,17003,17226,15452,14832,15498,14921,17328,16887,
-14866,16391,14521,13410,16377,14977,16010,13409,14396,13941,13885,13074,
-20679, 4310,13073,20678, 4309, 4308,22776,16314,15300,21972, 7379,13072,
- 4531,15564,22133, 6475,15870,15563,15825,13599,13511,15764, 6771, 6670,
- 6678, 6486, 7784,13448,13897, 3266, 3424,42761,42776, 6929, 5264, 2924,
- 2381,18833,43481, 8713, 2380, 2379, 2962,19078,42868,18806,43450, 2923,
- 1016, 1058,35100,29992, 1044,35096,29988,15561,22131,35097,29989, 1040,
- 2404, 1034, 1042, 1054, 1028, 5115, 5117,16064,22585,16073, 4297,22594,
- 4296,27926, 4624, 6948, 5294,15252,21930,15259, 7332,21937, 7339,27507,
- 8352,14813,14857,14970,14969,42775,13447,13896,13446,13895, 7110, 5369,
- 2980, 8377, 7739, 7738,19111,19110,10739,10738,18987,43158, 2942, 8712,
- 4563,13639,21187, 4554,13904, 4195, 4381,15070,21780, 4533,13903,14067,
-13957,16938,16937,42132,42573,17002,17225,15451,14920,15497,14831,14919,
-15409,22043, 7462,13305,20963, 6811,13304,20962, 6657,16196,22691, 6711,
-13303,13986,13985,13984,17224,14918,14830,42689,42380,42688,42379, 4429,
-13311,20969, 4428,13977,16936,13307,20965, 4423,13509,37779, 4899,13507,
-37777, 4897,13983,42687,42378,42373,42682,13988,42377,42686,42691,42382,
- 9078,23228,17119, 7511,22094,15487,15440,22073, 7490,13115,20712, 6824,
-42802, 8376, 8375, 7849,22118,15548,13826,13445,13894,13114,13628, 2232,
-21214,13743,13651,21291, 2250, 6477,21167,15144,13606,21841, 7270,13956,
-21399, 2214, 2231,21355,13867,15143,21840, 7269, 6483,21334,13833,13955,
- 4574,13113,13949, 4571, 4570,13731,21281, 4553,13168,13737,21286, 2230,
-13742,21290, 2249,13954,21398, 2213,13948,21396, 2229,13112,20711, 6735,
-13940,15265,21943,15066,21776,15085,21795,30243,35306,15560,22130, 4548,
-29765,34712,29750,34697, 2378, 5130, 5127,43480,18832, 2377,35094,29986,
- 2376,35090,29982,15558,22128,35091,29983, 2403,15077,21787,30235,35299,
-30246,35309, 8342,13111,20710, 6777,13110,20709, 7804, 4550,13208,20827,
- 4380,18680,42605, 4379,13646,18934,42986, 8312, 1778,42238,42611,13167,
-20780, 4359, 7035, 5307,42741, 1710, 1626, 8327, 8326, 2375, 8340, 8325,
- 7615, 7612,19074,19071,10696,10693, 4562,13166, 8224, 8659,19004,43178,
-15330,21997, 8664, 8226, 2922, 2374, 8223, 8658, 5467,  955, 6059,  953,
- 5464,  959, 6056,  957, 8661, 8663, 8218, 8221,14243,14242,16236,16235,
-32298,32297, 8076, 6069,42820,42819, 8383,10641,19007,10640, 6755,19006,
- 6754,15343,22008, 7135, 5491,42828, 2373, 8387, 8386, 7793, 7792,19130,
-19129,10758,10757,19123,42907,43185,43523,42818,42906, 8672, 8675, 1503,
- 6071, 5483, 1507,32302, 7134, 5490, 8080, 6089,19017,43192,43191,43528,
-43190,43527,42827,42913, 8385, 7791, 7790,19128,19127,10756,10755,10651,
-19016,10648, 6766,19013, 6763, 8233, 8236,42911,42825, 5497, 1549, 6093,
- 1539, 5496, 1548, 6092, 1538,15069,21779,15332,21999,15083,21793,15090,
-21800,15088,21798,15674,22221,15557,22127,15556,22126,15559,22129,15555,
-22125,15078,21788,15080,21790,15076,21786,15554,22124,15562,22132,15553,
-22123,15552,22122,15074,21784,15073,21783,15184,21867,15949,22485,15948,
-22484,15988,15219,22525,21900,27872,27463,15985,15216,27869,22522,21897,
-27460,27857,27448,27849,27440,25615,27633,27608,21778,15068,27834,27425,
-27765,27606,15970,15201,22507,21882,27833,27424,15969,15200,27899,27898,
-22541,22540,22506,21881,27490,27489,16004,16003,27832,27423,21916,21915,
-15235,15234,27897,27488
-};
-
-
-const int s_nDataSize3 = 24772;
-unsigned int s_Data3[24772] = {
-//Output priorities (total = 24772):
-10, 9, 12, 6, 11, 14, 4, 1, 7, 5, 2, 3, 13, 8, 0,
-0, 1, 2, 219, 218, 76, 217, 216, 77, 1, 0, 74, 78, 79, 75,
-70, 71, 72, 68, 73, 69, 310, 299, 296, 331, 297, 332, 114, 26, 298,
-340, 330, 336, 338, 339, 62, 112, 328, 334, 329, 335, 113, 337, 327, 333,
-115, 60, 27, 61, 63, 273, 215, 36, 213, 31, 35, 39, 319, 312, 320,
-323, 324, 343, 157, 345, 28, 178, 32, 59, 269, 58, 309, 305, 275, 271,
-308, 304, 34, 117, 181, 129, 154, 211, 30, 38, 177, 193, 55, 130, 268,
-33, 303, 174, 29, 37, 119, 212, 143, 188, 66, 270, 141, 183, 194, 179,
-126, 261, 190, 267, 344, 346, 272, 189, 173, 274, 51, 322, 321, 342, 315,
-214, 311, 14, 57, 223, 348, 125, 176, 192, 317, 280, 314, 165, 160, 175,
-326, 127, 17, 247, 172, 262, 5, 231, 99, 138, 124, 54, 301, 325, 167,
-15, 43, 205, 47, 122, 147, 292, 295, 83, 106, 86, 87, 220, 131, 347,
-293, 150, 209, 233, 67, 116, 148, 156, 171, 180, 191, 256, 195, 341, 128,
-277, 291, 281, 289, 294, 313, 102, 46, 103, 207, 229, 236, 240, 224, 227,
-249, 170, 49, 251, 258, 318, 133, 197, 278, 2, 56, 252, 265, 254, 20,
-142, 151, 316, 164, 121, 162, 41, 107, 139, 203, 288, 302, 48, 52, 110,
-53, 64, 4, 16, 284, 135, 307, 3, 40, 155, 202, 23, 93, 22, 92,
-290, 65, 210, 50, 98, 208, 94, 123, 137, 187, 225, 7, 10, 120, 109,
-263, 287, 186, 108, 152, 264, 90, 253, 96, 97, 136, 200, 118, 140, 300,
-306, 185, 6, 11, 89, 259, 85, 101, 132, 196, 24, 45, 260, 244, 91,
-18, 104, 232, 19, 44, 105, 184, 21, 84, 226, 250, 283, 279, 286, 158,
-248, 257, 255, 80, 169, 13, 100, 81, 168, 199, 238, 9, 12, 82, 182,
-201, 266, 146, 204, 230, 239, 241, 159, 221, 285, 134, 88, 242, 246, 8,
-144, 222, 149, 161, 228, 237, 276, 95, 206, 282, 163, 198, 243, 235, 245,
-42, 166, 25, 111, 145, 153, 234, 13, 0, 1, 8, 3, 11, 7, 9,
-2, 12, 4, 6, 5, 10, 0, 61, 62, 0, 2, 3, 5, 6, 8,
-15, 17, 1, 4, 7, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20,
-21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
-36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
-51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 63, 64, 65, 66, 67,
-68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 4, 5,
-2, 0, 1, 3, 7, 10, 8, 11, 6, 9, 97, 100, 22, 123, 124,
-125, 98, 101, 40, 39, 66, 72, 75, 69, 68, 74, 21, 41, 67, 73,
-77, 30, 71, 23, 106, 36, 54, 55, 63, 96, 32, 99, 58, 59, 65,
-38, 107, 27, 17, 56, 57, 64, 70, 76, 29, 15, 31, 122, 102, 25,
-48, 49, 50, 51, 52, 53, 26, 28, 103, 37, 127, 104, 120, 121, 24,
-33, 46, 47, 62, 112, 113, 116, 105, 20, 13, 126, 128, 35, 34, 19,
-42, 43, 44, 45, 60, 61, 18, 79, 84, 91, 16, 14, 82, 89, 94,
-85, 119, 83, 88, 95, 118, 78, 90, 81, 86, 93, 12, 80, 87, 92,
-108, 109, 110, 111, 114, 115, 117, 148, 542, 149, 147, 303, 531, 555, 573,
-574, 532, 556, 150, 153, 155, 578, 304, 560, 536, 151, 154, 157, 534, 558,
-576, 533, 538, 557, 575, 547, 551, 570, 305, 568, 306, 540, 541, 544, 546,
-550, 553, 562, 564, 565, 571, 552, 554, 572, 535, 559, 577, 537, 561, 569,
-539, 543, 545, 548, 549, 563, 566, 567, 308, 307, 152, 156, 158, 382, 144,
-128, 145, 438, 446, 450, 458, 462, 470, 474, 482, 492, 500, 504, 510, 516,
-522, 530, 204, 394, 528, 381, 397, 480, 498, 396, 400, 436, 444, 448, 456,
-460, 468, 472, 490, 502, 508, 514, 520, 286, 388, 393, 294, 403, 273, 384,
-385, 387, 391, 399, 408, 313, 317, 347, 354, 414, 419, 426, 25, 88, 127,
-130, 198, 275, 336, 483, 126, 281, 283, 341, 432, 299, 325, 390, 402, 415,
-416, 417, 418, 427, 428, 116, 124, 134, 142, 221, 229, 298, 479, 486, 497,
-527, 24, 87, 227, 311, 315, 329, 353, 506, 512, 518, 30, 34, 41, 196,
-300, 484, 48, 104, 186, 191, 264, 335, 343, 363, 234, 276, 441, 443, 453,
-455, 465, 467, 477, 495, 525, 222, 269, 476, 494, 524, 395, 89, 140, 413,
-420, 425, 481, 499, 505, 511, 517, 529, 200, 257, 327, 398, 401, 440, 445,
-452, 457, 464, 469, 32, 36, 42, 47, 345, 365, 435, 442, 447, 454, 459,
-466, 471, 478, 489, 496, 501, 507, 513, 519, 526, 202, 323, 146, 170, 177,
-179, 248, 255, 368, 380, 206, 122, 132, 258, 279, 288, 296, 349, 375, 434,
-46, 114, 165, 180, 201, 219, 243, 250, 297, 405, 429, 33, 38, 43, 172,
-203, 208, 346, 392, 404, 410, 485, 488, 183, 216, 261, 348, 386, 430, 20,
-26, 65, 100, 131, 162, 167, 174, 182, 188, 189, 194, 210, 218, 240, 252,
-260, 266, 272, 284, 360, 372, 383, 423, 12, 17, 57, 92, 99, 129, 213,
-215, 230, 231, 278, 291, 293, 339, 389, 406, 411, 422, 15, 60, 62, 97,
-117, 119, 135, 199, 224, 225, 236, 245, 267, 302, 321, 326, 377, 407, 102,
-137, 175, 274, 431, 412, 421, 424, 173, 238, 246, 251, 253, 262, 270, 282,
-366, 370, 378, 437, 439, 449, 451, 461, 463, 473, 475, 491, 493, 503, 509,
-515, 521, 523, 0, 1, 81, 82, 106, 160, 168, 184, 185, 192, 193, 263,
-271, 277, 322, 358, 22, 28, 31, 40, 67, 98, 103, 105, 138, 254, 316,
-319, 355, 328, 10, 14, 49, 52, 59, 70, 73, 90, 112, 133, 220, 228,
-232, 233, 301, 309, 314, 331, 333, 337, 344, 351, 35, 37, 44, 163, 342,
-409, 433, 487, 259, 27, 29, 39, 50, 161, 164, 176, 178, 181, 187, 190,
-197, 205, 239, 241, 242, 324, 332, 359, 361, 362, 371, 373, 374, 6, 7,
-45, 55, 56, 75, 77, 79, 80, 108, 109, 159, 166, 169, 171, 195, 217,
-237, 247, 249, 256, 265, 268, 280, 334, 340, 350, 357, 367, 369, 379, 2,
-3, 9, 18, 19, 21, 23, 53, 63, 64, 66, 68, 72, 76, 83, 84,
-93, 95, 96, 101, 107, 111, 120, 121, 123, 125, 139, 141, 143, 212, 244,
-290, 295, 310, 312, 318, 320, 330, 338, 352, 356, 4, 5, 8, 11, 13,
-51, 54, 58, 61, 69, 71, 74, 78, 85, 86, 94, 110, 113, 115, 136,
-207, 209, 211, 214, 223, 226, 235, 285, 287, 289, 292, 364, 376, 16, 91,
-118, 0, 3, 19, 149, 96, 20, 150, 5, 1, 6, 4, 2, 147, 93,
-91, 145, 148, 95, 146, 85, 55, 66, 76, 59, 73, 81, 51, 61, 64,
-54, 58, 92, 94, 63, 173, 62, 86, 65, 75, 60, 74, 82, 56, 52,
-53, 57, 171, 167, 160, 159, 170, 72, 141, 162, 172, 28, 68, 29, 140,
-168, 27, 70, 126, 139, 69, 163, 89, 137, 166, 71, 169, 129, 142, 164,
-116, 135, 143, 90, 67, 113, 121, 165, 161, 131, 123, 125, 133, 30, 7,
-138, 10, 117, 119, 11, 120, 127, 134, 130, 132, 115, 124, 114, 136, 9,
-118, 33, 77, 157, 158, 8, 12, 88, 155, 156, 34, 78, 99, 97, 128,
-36, 44, 87, 35, 43, 15, 13, 17, 122, 21, 23, 25, 144, 37, 45,
-47, 103, 32, 42, 80, 39, 49, 83, 108, 40, 50, 84, 38, 46, 48,
-31, 41, 79, 18, 98, 22, 24, 26, 14, 16, 105, 107, 100, 152, 111,
-109, 104, 101, 110, 112, 106, 153, 102, 151, 154, 0, 1, 3, 4, 2,
-12, 13, 10, 11, 14, 9, 6, 5, 7, 8, 21, 24, 23, 22, 20,
-19, 15, 16, 17, 18, 0, 1, 3, 2, 108, 109, 139, 153, 122, 96,
-178, 97, 126, 95, 101, 100, 94, 174, 140, 172, 175, 173, 5, 36, 154,
-88, 83, 80, 35, 161, 151, 19, 11, 6, 147, 143, 34, 176, 123, 37,
-169, 170, 171, 163, 164, 165, 166, 167, 168, 155, 156, 157, 158, 159, 160,
-82, 162, 177, 152, 81, 111, 7, 12, 20, 128, 4, 93, 21, 64, 13,
-148, 60, 62, 118, 10, 18, 33, 144, 30, 48, 135, 149, 86, 114, 99,
-124, 129, 130, 131, 61, 63, 65, 8, 14, 16, 22, 24, 26, 28, 73,
-75, 77, 90, 56, 72, 74, 76, 78, 51, 53, 55, 57, 59, 67, 69,
-71, 79, 89, 91, 50, 52, 54, 58, 66, 68, 70, 92, 107, 39, 41,
-43, 45, 47, 110, 103, 105, 120, 145, 127, 38, 40, 42, 44, 46, 137,
-102, 104, 106, 31, 32, 49, 9, 15, 17, 23, 29, 87, 25, 27, 150,
-141, 142, 84, 85, 146, 98, 116, 119, 133, 115, 121, 136, 132, 125, 117,
-112, 113, 138, 134, 2, 0, 1, 3, 8, 6, 7, 4, 5, 9, 10,
-0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
-15, 16, 2, 1, 4, 8, 7, 9, 6, 0, 5, 3, 10, 109, 107,
-108, 97, 105, 28, 30, 21, 81, 26, 32, 106, 20, 24, 35, 22, 34,
-96, 104, 62, 27, 111, 11, 18, 23, 36, 83, 37, 12, 95, 17, 46,
-56, 25, 40, 42, 87, 89, 14, 16, 13, 29, 103, 82, 110, 15, 19,
-31, 33, 102, 38, 66, 67, 68, 69, 70, 71, 72, 85, 41, 115, 117,
-91, 93, 94, 99, 101, 43, 73, 86, 88, 114, 116, 50, 52, 74, 76,
-77, 78, 79, 39, 113, 44, 45, 47, 48, 49, 51, 53, 54, 55, 57,
-58, 59, 60, 61, 63, 64, 65, 75, 80, 84, 90, 92, 98, 100, 112,
-0, 1, 20, 17, 18, 12, 19, 16, 21, 15, 23, 14, 22, 13, 0,
-6, 5, 11, 3, 9, 2, 8, 1, 7, 4, 10, 3, 4, 11, 14,
-17, 32, 0, 1, 2, 5, 6, 7, 8, 9, 10, 12, 13, 15, 16,
-18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33,
-34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 2, 3, 0, 1,
-15, 13, 17, 21, 77, 76, 33, 30, 34, 110, 105, 114, 118, 31, 32,
-35, 101, 100, 16, 131, 12, 14, 130, 135, 132, 112, 120, 116, 111, 115,
-119, 79, 117, 113, 121, 20, 133, 80, 134, 78, 81, 44, 109, 49, 47,
-124, 46, 28, 48, 126, 26, 87, 89, 90, 88, 6, 5, 7, 9, 11,
-19, 36, 38, 40, 42, 86, 91, 18, 4, 10, 39, 8, 37, 41, 43,
-45, 60, 127, 27, 61, 106, 129, 59, 108, 128, 53, 54, 57, 58, 62,
-50, 29, 56, 63, 52, 55, 107, 122, 123, 125, 51, 64, 65, 66, 67,
-68, 69, 70, 71, 72, 73, 74, 75, 82, 83, 84, 85, 92, 93, 94,
-95, 96, 97, 98, 99, 102, 103, 104, 23, 25, 24, 22, 175, 174, 176,
-162, 158, 165, 124, 166, 15, 155, 126, 160, 120, 121, 122, 123, 125, 127,
-128, 129, 153, 157, 171, 152, 163, 170, 96, 97, 108, 0, 3, 6, 9,
-12, 66, 69, 72, 75, 78, 81, 130, 131, 150, 151, 156, 159, 161, 168,
-169, 173, 177, 154, 164, 167, 172, 1, 2, 4, 5, 7, 8, 10, 11,
-13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28,
-29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43,
-44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58,
-59, 60, 61, 62, 63, 64, 65, 67, 68, 70, 71, 73, 74, 76, 77,
-79, 80, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94,
-95, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 109, 110, 111, 112,
-113, 114, 115, 116, 117, 118, 119, 132, 133, 134, 135, 136, 137, 138, 139,
-140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 178, 179, 0, 1, 2,
-8, 6, 7, 3, 5, 4, 0, 1305, 1308, 540, 545, 558, 563, 564, 569,
-570, 575, 576, 581, 582, 587, 588, 593, 594, 599, 600, 605, 606, 611, 612,
-617, 618, 623, 624, 629, 630, 635, 636, 641, 642, 647, 648, 653, 654, 657,
-662, 663, 668, 669, 672, 677, 678, 681, 684, 687, 690, 0, 1, 2, 3,
-4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
-19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
-34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
-49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
-64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78,
-79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93,
-94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108,
-109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123,
-124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138,
-139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153,
-154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168,
-169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183,
-184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198,
-199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213,
-214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228,
-229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243,
-244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258,
-259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273,
-274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288,
-289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303,
-304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318,
-319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333,
-334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348,
-349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363,
-364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378,
-379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393,
-394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408,
-409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423,
-424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438,
-439, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453,
-454, 455, 456, 457, 458, 459, 460, 461, 462, 463, 464, 465, 466, 467, 468,
-469, 470, 471, 472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483,
-484, 485, 486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 497, 498,
-499, 500, 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513,
-514, 515, 516, 517, 518, 519, 520, 521, 522, 523, 524, 525, 526, 527, 528,
-529, 530, 531, 532, 533, 534, 535, 536, 537, 538, 539, 541, 542, 543, 544,
-546, 547, 548, 549, 550, 551, 552, 553, 554, 555, 556, 557, 559, 560, 561,
-562, 565, 566, 567, 568, 571, 572, 573, 574, 577, 578, 579, 580, 583, 584,
-585, 586, 589, 590, 591, 592, 595, 596, 597, 598, 601, 602, 603, 604, 607,
-608, 609, 610, 613, 614, 615, 616, 619, 620, 621, 622, 625, 626, 627, 628,
-631, 632, 633, 634, 637, 638, 639, 640, 643, 644, 645, 646, 649, 650, 651,
-652, 655, 656, 658, 659, 660, 661, 664, 665, 666, 667, 670, 671, 673, 674,
-675, 676, 679, 680, 682, 683, 685, 686, 688, 689, 691, 692, 693, 694, 695,
-696, 697, 698, 699, 700, 701, 702, 703, 704, 705, 706, 707, 708, 709, 710,
-711, 712, 713, 714, 715, 716, 717, 718, 719, 720, 721, 722, 723, 724, 725,
-726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736, 737, 738, 739, 740,
-741, 742, 743, 744, 745, 746, 747, 748, 749, 750, 751, 752, 753, 754, 755,
-756, 757, 758, 759, 760, 761, 762, 763, 764, 765, 766, 767, 768, 769, 770,
-771, 772, 773, 774, 775, 776, 777, 778, 779, 780, 781, 782, 783, 784, 785,
-786, 787, 788, 789, 790, 791, 792, 793, 794, 795, 796, 797, 798, 799, 800,
-801, 802, 803, 804, 805, 806, 807, 808, 809, 810, 811, 812, 813, 814, 815,
-816, 817, 818, 819, 820, 821, 822, 823, 824, 825, 826, 827, 828, 829, 830,
-831, 832, 833, 834, 835, 836, 837, 838, 839, 840, 841, 842, 843, 844, 845,
-846, 847, 848, 849, 850, 851, 852, 853, 854, 855, 856, 857, 858, 859, 860,
-861, 862, 863, 864, 865, 866, 867, 868, 869, 870, 871, 872, 873, 874, 875,
-876, 877, 878, 879, 880, 881, 882, 883, 884, 885, 886, 887, 888, 889, 890,
-891, 892, 893, 894, 895, 896, 897, 898, 899, 900, 901, 902, 903, 904, 905,
-906, 907, 908, 909, 910, 911, 912, 913, 914, 915, 916, 917, 918, 919, 920,
-921, 922, 923, 924, 925, 926, 927, 928, 929, 930, 931, 932, 933, 934, 935,
-936, 937, 938, 939, 940, 941, 942, 943, 944, 945, 946, 947, 948, 949, 950,
-951, 952, 953, 954, 955, 956, 957, 958, 959, 960, 961, 962, 963, 964, 965,
-966, 967, 968, 969, 970, 971, 972, 973, 974, 975, 976, 977, 978, 979, 980,
-981, 982, 983, 984, 985, 986, 987, 988, 989, 990, 991, 992, 993, 994, 995,
-996, 997, 998, 999, 1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010,
-1011, 1012, 1013, 1014, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025,
-1026, 1027, 1028, 1029, 1030, 1031, 1032, 1033, 1034, 1035, 1036, 1037, 1038, 1039, 1040,
-1041, 1042, 1043, 1044, 1045, 1046, 1047, 1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
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-26, 27, 28, 29, 30, 31, 32, 35, 39, 42, 43, 44, 45, 46, 48,
-49, 50, 144, 145, 0, 141, 142, 143, 155, 154, 139, 140, 146, 147, 150,
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-42, 44, 45, 46, 47, 56, 57, 58, 59, 60, 62, 64, 66, 68, 70,
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-91, 99, 80, 89, 77, 1, 3, 9, 5, 6, 7, 8, 70, 28, 83,
-22, 34, 42, 49, 51, 57, 17, 23, 29, 37, 63, 19, 25, 31, 39,
-48, 50, 52, 56, 58, 62, 64, 66, 84, 76, 90, 78, 75, 85, 4,
-0, 2, 10, 20, 26, 32, 36, 40, 15, 61, 16, 18, 24, 30, 35,
-38, 47, 55, 65, 21, 27, 33, 41, 0, 1, 2, 3, 4, 5, 6,
-7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
-22, 23, 24, 25, 26, 40, 42, 3, 1, 51, 5, 49, 48, 22, 24,
-4, 2, 52, 50, 76, 78, 80, 94, 96, 98, 23, 47, 26, 27, 63,
-64, 65, 70, 71, 21, 77, 79, 81, 17, 20, 33, 37, 41, 43, 57,
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-0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
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-30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
-45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
-60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74,
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-24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
-39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
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-84, 85, 86, 87, 88, 89, 90, 91, 92, 0, 1, 2, 3, 4, 5,
-6, 7, 8, 1, 3, 43, 0, 2, 4, 5, 6, 7, 8, 9, 10,
-11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
-26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
-41, 42, 44, 45, 46, 89, 90, 0, 1, 2, 3, 4, 5, 6, 7,
-8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
-23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
-38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
-53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67,
-68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82,
-83, 84, 85, 86, 87, 88, 91, 92, 93, 94, 95, 96, 97, 98, 99,
-100, 101, 102, 103, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
-11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
-26, 27, 28, 29, 30, 31, 0, 1, 2, 3, 4, 5, 6, 7, 8,
-9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
-24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
-39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
-54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68,
-69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 186, 189, 174,
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-44, 45, 55, 75, 99, 103, 109, 115, 0, 6, 19, 31, 42, 43, 54,
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-100, 101, 127, 133, 139, 145, 151, 157, 163, 169, 8, 21, 33, 87, 106,
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-48, 49, 50, 51, 57, 58, 66, 67, 68, 69, 80, 90, 91, 92, 93,
-126, 131, 134, 138, 143, 146, 150, 155, 158, 162, 167, 170, 10, 11, 22,
-23, 34, 35, 88, 89, 135, 147, 159, 171, 5, 12, 14, 16, 17, 25,
-27, 28, 29, 37, 39, 40, 41, 52, 53, 59, 70, 71, 79, 81, 82,
-83, 94, 95, 132, 144, 156, 164, 165, 168, 756, 759, 761, 104, 105, 640,
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-43, 48, 187, 324, 97, 218, 296, 416, 130, 137, 166, 226, 241, 271, 279,
-319, 327, 391, 399, 440, 482, 142, 283, 325, 403, 443, 453, 485, 758, 0,
-24, 67, 298, 336, 346, 464, 489, 504, 507, 510, 516, 518, 521, 523, 524,
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-12, 14, 15, 17, 18, 20, 21, 25, 26, 27, 28, 29, 30, 32, 33,
-36, 38, 39, 41, 42, 44, 45, 49, 50, 51, 55, 56, 57, 58, 61,
-62, 63, 66, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
-80, 81, 82, 83, 84, 86, 87, 90, 91, 93, 95, 96, 98, 99, 100,
-106, 108, 109, 110, 111, 112, 113, 114, 116, 117, 119, 120, 122, 123, 125,
-126, 127, 128, 129, 131, 132, 133, 134, 135, 136, 139, 140, 141, 145, 146,
-147, 148, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 167,
-168, 169, 170, 171, 172, 173, 174, 176, 177, 180, 182, 183, 185, 186, 188,
-189, 192, 193, 194, 195, 196, 197, 198, 200, 201, 203, 204, 206, 207, 209,
-210, 211, 212, 213, 214, 215, 216, 219, 220, 221, 227, 228, 229, 230, 231,
-232, 233, 234, 235, 236, 237, 238, 239, 242, 243, 246, 247, 249, 251, 254,
-255, 256, 257, 258, 260, 261, 263, 264, 266, 267, 269, 270, 272, 273, 274,
-275, 276, 277, 278, 282, 286, 287, 288, 289, 292, 293, 294, 295, 297, 299,
-300, 301, 302, 303, 304, 305, 306, 308, 309, 311, 312, 314, 315, 317, 318,
-320, 321, 323, 326, 329, 330, 334, 335, 337, 341, 342, 343, 344, 345, 347,
-348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362,
-363, 366, 367, 368, 370, 374, 375, 376, 377, 378, 380, 381, 383, 384, 386,
-387, 389, 390, 392, 393, 394, 395, 396, 397, 398, 402, 406, 407, 408, 409,
-412, 413, 414, 415, 417, 418, 419, 422, 423, 424, 425, 427, 430, 432, 433,
-435, 438, 444, 445, 446, 447, 448, 449, 451, 452, 454, 456, 458, 459, 462,
-463, 466, 471, 472, 473, 474, 476, 479, 483, 484, 486, 487, 490, 492, 493,
-495, 498, 500, 503, 506, 509, 511, 512, 517, 519, 525, 526, 528, 531, 532,
-533, 534, 538, 539, 541, 542, 543, 544, 545, 546, 548, 549, 554, 555, 556,
-557, 561, 562, 565, 568, 575, 578, 581, 584, 586, 589, 593, 596, 597, 600,
-605, 609, 610, 612, 613, 618, 621, 624, 627, 628, 629, 631, 634, 636, 638,
-639, 646, 648, 650, 652, 653, 658, 659, 660, 662, 664, 665, 672, 673, 674,
-675, 676, 677, 679, 680, 686, 689, 690, 693, 694, 695, 698, 702, 705, 706,
-707, 710, 711, 712, 713, 714, 715, 717, 721, 728, 731, 734, 737, 740, 741,
-743, 744, 746, 748, 752, 755, 325, 326, 324, 15, 258, 103, 123, 3, 9,
-124, 331, 14, 259, 16, 2, 8, 337, 102, 335, 340, 4, 10, 17, 120,
-246, 247, 276, 333, 334, 33, 72, 128, 338, 5, 11, 76, 105, 127, 0,
-13, 74, 73, 122, 1, 75, 7, 300, 336, 364, 6, 12, 228, 235, 263,
-265, 270, 280, 291, 106, 297, 77, 135, 162, 169, 192, 199, 201, 214, 216,
-225, 260, 262, 104, 306, 316, 339, 170, 200, 223, 341, 137, 160, 190, 203,
-215, 218, 141, 150, 157, 171, 180, 187, 312, 313, 317, 39, 125, 143, 148,
-158, 173, 178, 188, 308, 318, 107, 322, 362, 35, 91, 97, 109, 299, 230,
-272, 293, 244, 256, 289, 323, 367, 38, 121, 302, 303, 311, 327, 245, 257,
-261, 290, 305, 234, 264, 279, 34, 36, 79, 85, 115, 126, 298, 307, 309,
-319, 328, 57, 63, 69, 198, 229, 271, 292, 82, 88, 90, 96, 108, 118,
-304, 320, 329, 37, 41, 80, 86, 116, 301, 332, 139, 159, 164, 168, 189,
-194, 205, 213, 217, 220, 222, 40, 136, 145, 167, 177, 197, 202, 212, 227,
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-39, 42, 43, 46, 47, 50, 51, 52, 53, 54, 55, 56, 57, 62, 63,
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-139, 143, 144, 146, 147, 150, 152, 153, 157, 158, 162, 166, 167, 168, 170,
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-352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366,
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-60, 61, 71, 59, 96, 99, 110, 89, 70, 58, 25, 27, 33, 35, 86,
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-88, 26, 32, 34, 103, 104, 108, 24, 97, 98, 113, 114, 44, 64, 69,
-36, 38, 41, 43, 47, 54, 57, 63, 66, 111, 37, 39, 40, 42, 45,
-46, 55, 56, 62, 65, 67, 68, 90, 92, 5, 11, 9, 84, 8, 4,
-10, 2, 48, 50, 52, 81, 82, 0, 6, 12, 14, 85, 80, 83, 49,
-51, 53, 91, 93, 118, 121, 124, 3, 17, 18, 21, 22, 29, 30, 1,
-7, 13, 15, 116, 119, 122, 129, 16, 19, 20, 23, 28, 31, 117, 120,
-123, 127, 128, 130, 3, 4, 5, 6, 25, 26, 27, 28, 29, 33, 41,
-54, 61, 62, 99, 101, 105, 106, 107, 108, 133, 134, 0, 7, 30, 83,
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-100, 102, 103, 104, 119, 132, 138, 139, 140, 16, 21, 22, 23, 24, 44,
-51, 64, 65, 66, 67, 69, 71, 72, 73, 74, 75, 76, 8, 9, 10,
-11, 12, 13, 14, 15, 35, 36, 42, 43, 46, 48, 49, 50, 52, 60,
-63, 77, 78, 79, 80, 81, 82, 85, 89, 94, 95, 96, 97, 98, 109,
-110, 111, 112, 113, 114, 115, 120, 121, 17, 18, 19, 20, 37, 38, 39,
-40, 45, 47, 53, 55, 56, 57, 58, 59, 68, 70, 84, 116, 117, 118,
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-146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160,
-161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
-176, 177, 178, 179, 180, 181, 182, 49, 18, 16, 17, 42, 45, 15, 8,
-46, 39, 6, 48, 7, 9, 10, 41, 44, 5, 40, 43, 30, 47, 51,
-52, 25, 19, 20, 21, 22, 23, 24, 3, 4, 29, 31, 32, 33, 34,
-35, 36, 37, 38, 71, 73, 11, 12, 13, 14, 50, 70, 0, 1, 2,
-26, 27, 28, 60, 62, 69, 61, 63, 64, 65, 72, 75, 76, 54, 55,
-56, 57, 58, 59, 66, 68, 81, 82, 83, 84, 86, 74, 53, 67, 77,
-78, 79, 80, 85, 87, 88, 0, 1, 2, 3, 4, 5, 6, 7, 8,
-9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
-24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
-39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
-54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68,
-69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83,
-84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98,
-99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
-114, 115, 116, 117, 118, 119, 120, 121, 122, 0, 1, 2, 3, 4, 5,
-6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-21, 100, 31, 35, 41, 33, 30, 34, 40, 82, 81, 103, 47, 32, 15,
-99, 46, 9, 21, 8, 69, 65, 67, 14, 62, 57, 58, 60, 80, 56,
-20, 11, 97, 10, 85, 86, 1, 22, 26, 36, 16, 17, 78, 79, 105,
-108, 5, 24, 28, 38, 44, 45, 59, 61, 63, 70, 109, 111, 0, 4,
-25, 29, 39, 50, 51, 54, 55, 71, 72, 73, 74, 75, 76, 77, 95,
-96, 101, 102, 104, 110, 98, 18, 19, 83, 84, 89, 23, 27, 37, 42,
-43, 48, 113, 2, 3, 6, 7, 12, 13, 49, 52, 53, 87, 88, 90,
-91, 92, 93, 94, 106, 107, 112, 64, 66, 68, 5, 4, 0, 39, 48,
-17, 8, 6, 7, 77, 78, 75, 76, 79, 80, 16, 15, 73, 56, 55,
-74, 40, 41, 42, 60, 9, 10, 11, 12, 13, 14, 59, 43, 62, 1,
-2, 3, 44, 61, 58, 68, 22, 23, 28, 35, 36, 45, 46, 47, 57,
-67, 69, 70, 71, 19, 18, 20, 21, 24, 25, 26, 27, 29, 30, 31,
-32, 33, 34, 37, 38, 49, 50, 51, 52, 53, 54, 63, 64, 65, 66,
-72, 81, 82, 83, 84, 34, 44, 71, 32, 43, 30, 35, 72, 33, 11,
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-17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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-48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63,
-64, 65, 36, 61, 20, 1, 19, 126, 127, 60, 56, 33, 34, 35, 21,
-22, 52, 59, 67, 71, 72, 63, 65, 66, 32, 45, 57, 84, 91, 114,
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-103, 106, 107, 108, 109, 110, 111, 112, 113, 116, 117, 118, 119, 120, 124,
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-43, 49, 53, 57, 45, 12, 13, 16, 18, 32, 34, 36, 14, 33, 35,
-37, 21, 23, 17, 19, 20, 22, 24, 25, 26, 27, 28, 29, 42, 48,
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-10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
-25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
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-16, 15, 17, 9, 12, 20, 7, 14, 19, 8, 10, 11, 13, 1, 2,
-167, 168, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
-13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
-28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
-43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
-58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
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-88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102,
-103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117,
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-163, 164, 165, 166, 0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 1,
-2, 3, 7, 6, 8, 9, 16, 2, 18, 19, 28, 27, 24, 25, 26,
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-9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
-24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
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-17, 19, 20, 21, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34,
-36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
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-9, 10, 0, 1, 2, 65, 64, 66, 52, 46, 49, 53, 59, 44, 48,
-45, 57, 34, 25, 26, 27, 36, 56, 24, 43, 47, 0, 1, 2, 3,
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-48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,
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-25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
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-22, 24, 26, 29, 39, 41, 42, 54, 56, 58, 60, 62, 75, 0, 1,
-2, 4, 7, 8, 9, 11, 13, 15, 17, 19, 20, 23, 25, 27, 28,
-30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 43, 44, 45, 46, 47,
-48, 49, 50, 51, 52, 53, 55, 57, 59, 61, 63, 64, 65, 66, 67,
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-2, 4, 6, 14, 16, 18, 20, 8, 31, 10, 11, 24, 25, 28, 29,
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-13, 15, 17, 19, 21, 22, 23, 26, 27, 34, 35, 37, 39, 42, 43,
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-20, 21, 22, 23, 24, 25, 26, 29, 30, 31, 32, 33, 34, 37, 38,
-39, 40, 41, 42, 43, 44, 47, 48, 49, 50, 51, 52, 53, 54, 55,
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-148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162,
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-30, 31, 32, 33, 34, 35, 36, 37, 8, 11, 9, 10, 0, 1, 4,
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-42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,
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-9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24,
-25, 26, 27, 28, 30, 31, 36, 37, 38, 39, 40, 41, 42, 43, 44,
-45, 46, 47, 48, 49, 50, 51, 52, 53, 0, 1, 2, 3, 4, 5,
-6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
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-2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
-17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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-1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
-16, 17, 18, 19, 112, 110, 113, 111, 29, 37, 18, 93, 96, 97, 99,
-98, 92, 100, 104, 105, 108, 101, 61, 62, 69, 77, 86, 70, 78, 85,
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-1, 3, 39, 21, 48, 49, 56, 95, 74, 82, 89, 31, 25, 33, 45,
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-22, 26, 30, 34, 49, 53, 55, 57, 58, 59, 60, 0, 1, 3, 4,
-5, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 19, 20, 21, 23,
-24, 25, 27, 28, 29, 31, 32, 33, 35, 36, 37, 38, 39, 40, 41,
-42, 43, 44, 45, 46, 47, 51, 23, 24, 25, 26, 16, 18, 20, 22,
-15, 17, 19, 21, 6, 8, 10, 12, 14, 0, 2, 1, 3, 4, 5,
-11, 7, 9, 13, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
-11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
-26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
-41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
-56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70,
-71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85,
-86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100,
-101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115,
-116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130,
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-2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0, 1,
-2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
-17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
-32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46,
-47, 48, 49, 50, 51, 52, 53, 54, 55, 0, 1, 2, 3, 4, 5,
-6, 7, 8, 9, 10, 11, 12, 0, 1, 2, 112, 114, 19, 61, 70,
-18, 111, 3, 5, 6, 66, 82, 109, 110, 113, 58, 102, 104, 31, 35,
-36, 37, 38, 71, 77, 86, 93, 95, 96, 108, 47, 25, 45, 46, 53,
-55, 75, 40, 41, 42, 52, 60, 83, 84, 24, 26, 11, 12, 22, 23,
-28, 30, 57, 63, 65, 69, 81, 90, 106, 32, 33, 34, 49, 50, 51,
-72, 73, 78, 79, 87, 88, 94, 4, 7, 8, 9, 10, 20, 21, 29,
-39, 43, 44, 48, 54, 56, 59, 62, 64, 67, 68, 74, 76, 80, 89,
-91, 92, 100, 101, 115, 116, 16, 99, 13, 14, 15, 17, 27, 85, 97,
-98, 103, 105, 107, 117, 7, 10, 19, 0, 1, 2, 3, 4, 5, 6,
-8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 0, 1, 2, 3, 4,
-5, 7, 17, 0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12,
-13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 0, 1, 0, 7, 11,
-5, 6, 10, 3, 4, 1, 2, 8, 9, 12, 0, 1, 2, 3, 4,
-0, 1, 2, 3, 4, 1, 3, 0, 2, 4, 5, 6, 7, 8, 9,
-10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 0, 1, 2, 3, 4,
-5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
-20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
-35, 36, 0, 1, 75, 78, 76, 15, 79, 77, 8, 85, 14, 0, 4,
-10, 81, 83, 84, 87, 12, 80, 82, 11, 9, 2, 6, 86, 36, 38,
-37, 13, 1, 5, 3, 7, 49, 22, 24, 28, 32, 50, 58, 63, 66,
-71, 23, 25, 29, 33, 47, 48, 51, 52, 53, 54, 46, 17, 19, 16,
-20, 21, 26, 27, 30, 31, 34, 35, 39, 40, 41, 42, 43, 44, 45,
-55, 56, 57, 59, 60, 61, 62, 64, 65, 67, 68, 69, 70, 72, 73,
-74, 18, 11, 22, 1, 3, 5, 7, 9, 10, 13, 15, 16, 18, 20,
-26, 28, 0, 2, 4, 6, 8, 12, 14, 17, 19, 21, 23, 24, 25,
-27, 29, 47, 45, 43, 48, 42, 44, 49, 46, 33, 11, 27, 31, 37,
-38, 63, 17, 18, 21, 23, 25, 29, 32, 35, 77, 83, 97, 0, 5,
-9, 15, 16, 19, 39, 41, 53, 69, 20, 22, 24, 26, 28, 30, 34,
-36, 76, 82, 96, 102, 103, 1, 3, 7, 13, 40, 51, 57, 61, 67,
-71, 73, 75, 81, 87, 95, 101, 106, 107, 70, 2, 4, 6, 8, 10,
-12, 14, 50, 52, 54, 55, 56, 58, 59, 60, 62, 64, 65, 66, 68,
-72, 74, 78, 79, 80, 84, 85, 86, 88, 89, 90, 91, 92, 93, 94,
-98, 99, 100, 104, 105, 108, 109, 0, 1, 46, 43, 47, 42, 3, 44,
-5, 20, 4, 18, 24, 26, 30, 38, 34, 36, 7, 9, 22, 2, 45,
-21, 40, 19, 35, 37, 39, 32, 12, 14, 28, 10, 16, 41, 25, 27,
-31, 6, 8, 23, 33, 11, 17, 13, 15, 29, 52, 50, 53, 48, 49,
-51, 0, 1, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
-6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
-36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
-51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65,
-66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80,
-81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
-96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110,
-111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125,
-126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140,
-141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155,
-156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170,
-171, 172, 173, 174, 175, 176, 177, 178, 179, 0, 1, 2, 3, 4, 5,
-6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
-36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
-51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65,
-66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80,
-81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
-96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110,
-111, 112, 113, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
-12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
-27, 28, 29, 30, 31, 32, 33, 34, 35, 5, 15, 19, 27, 31, 35,
-39, 43, 96, 104, 120, 121, 131, 0, 1, 2, 10, 12, 24, 25, 46,
-47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 76, 77, 78, 79, 80,
-81, 82, 83, 84, 85, 86, 87, 88, 90, 91, 93, 95, 97, 99, 101,
-103, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118,
-119, 122, 123, 124, 125, 126, 127, 128, 129, 130, 132, 133, 134, 135, 136,
-137, 138, 140, 144, 148, 152, 156, 160, 164, 3, 4, 6, 7, 8, 9,
-11, 13, 14, 16, 17, 18, 20, 21, 22, 23, 26, 28, 29, 30, 32,
-33, 34, 36, 37, 38, 40, 41, 42, 44, 45, 57, 58, 59, 60, 61,
-62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 89,
-92, 94, 98, 100, 102, 139, 141, 142, 143, 145, 146, 147, 149, 150, 151,
-153, 154, 155, 157, 158, 159, 161, 162, 163, 165, 166, 36, 57, 60, 65,
-68, 114, 135, 156, 161, 162, 165, 170, 176, 179, 182, 183, 188, 191, 194,
-197, 198, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
-13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
-28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43,
-44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 58, 59,
-61, 62, 63, 64, 66, 67, 69, 70, 71, 72, 73, 74, 75, 76, 77,
-78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92,
-93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
-108, 109, 110, 111, 112, 113, 115, 116, 117, 118, 119, 120, 121, 122, 123,
-124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 136, 137, 138, 139,
-140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154,
-155, 157, 158, 159, 160, 163, 164, 166, 167, 168, 169, 171, 172, 173, 174,
-175, 177, 178, 180, 181, 184, 185, 186, 187, 189, 190, 192, 193, 195, 196,
-199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213,
-214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228,
-229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243,
-244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258,
-259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273,
-274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288,
-289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303,
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-319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333,
-334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348,
-349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363,
-364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378,
-379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393,
-394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408,
-409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423,
-424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438,
-439, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453,
-454, 455, 456, 457, 458, 459, 460, 461, 462, 463, 464, 465, 466, 467, 468,
-469, 470, 471, 472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483,
-484, 485, 486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 497, 498,
-499, 500, 501, 502, 503, 504, 505, 506, 0, 1, 2, 3, 4, 5, 6,
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-10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
-25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
-40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54,
-55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69,
-70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84,
-85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99,
-100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114,
-115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129,
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-175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189,
-190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204,
-205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
-220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234,
-235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249,
-250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264,
-265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279,
-280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294,
-295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309,
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-325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339,
-340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354,
-355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369,
-370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384,
-385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399,
-400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414,
-415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429,
-430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444,
-445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459,
-460, 461, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 473, 474,
-475, 476, 477, 478, 479, 480, 481, 482, 483, 484, 485, 486, 487, 488, 489,
-490, 491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 501, 502, 503, 504,
-505, 506, 507, 508, 509, 510, 511, 512, 513, 514, 515, 516, 517, 518, 519,
-520, 521, 522, 523, 524, 525, 526, 527, 528, 529, 530, 531, 532, 533, 534,
-535, 536, 537, 538, 539, 540, 541, 542, 543, 544, 545, 546, 547, 548, 549,
-550, 551, 552, 553, 554, 555, 556, 557, 558, 559, 560, 561, 562, 563, 564,
-565, 566, 567, 568, 569, 570, 571, 572, 573, 574, 575, 576, 577, 578, 579,
-580, 581, 582, 583, 584, 585, 586, 587, 588, 589, 590, 591, 592, 593, 594,
-595, 596, 597, 598, 599, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609,
-610, 611, 612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 622, 623, 624,
-625, 626, 627, 628, 629, 630, 631, 632, 633, 634, 635, 636, 637, 638, 639,
-640, 641, 642, 643, 644, 645, 646, 647, 648, 649, 650, 651, 652, 653, 654,
-655, 656, 657, 658, 659, 660, 661, 662, 663, 664, 665, 666, 667, 668, 669,
-0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
-15, 16, 17, 18, 19, 20, 21, 0, 1, 2, 3, 4, 5, 6, 7,
-8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
-23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
-38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
-53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67,
-68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82,
-83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97,
-98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112,
-113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127,
-128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142,
-143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157,
-158, 159, 160, 161, 162, 163, 164, 165, 166, 0, 1, 2, 3, 4, 5,
-6, 7, 8, 9, 10, 11, 12, 13, 14, 0, 1, 2, 3, 4, 5,
-0, 3, 5, 10, 16, 18, 94, 4, 6, 7, 8, 17, 37, 44, 48,
-51, 56, 66, 69, 75, 79, 82, 84, 88, 98, 99, 102, 1, 2, 9,
-11, 12, 13, 14, 15, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28,
-29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 45,
-46, 47, 49, 50, 52, 53, 54, 55, 57, 58, 59, 60, 61, 62, 63,
-64, 65, 67, 68, 70, 71, 72, 73, 74, 76, 77, 78, 80, 81, 83,
-85, 86, 87, 89, 90, 91, 92, 93, 95, 96, 97, 100, 101, 103, 104,
-105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119,
-120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134,
-135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
-150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164,
-165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179,
-180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194,
-81, 18, 24, 33, 69, 83, 19, 25, 35, 71, 0, 1, 2, 3, 4,
-5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21,
-22, 23, 26, 27, 28, 29, 30, 31, 32, 34, 36, 37, 38, 39, 40,
-41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
-56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 70, 72,
-73, 74, 75, 76, 77, 78, 79, 80, 82, 84, 85, 86, 87, 88, 89,
-90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
-105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119,
-120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134,
-135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
-150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164,
-165, 166, 167, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
-12, 13, 14, 15, 16, 17, 4, 5, 6, 31, 32, 39, 40, 41, 0,
-1, 2, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
-19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 33, 34, 35,
-36, 37, 38, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
-54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68,
-69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83,
-84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98,
-99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
-114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128,
-129, 130, 131, 132, 133, 134, 135, 136, 0, 1, 3, 22, 23, 26, 34,
-0, 1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
-16, 17, 18, 19, 20, 21, 24, 25, 27, 28, 29, 30, 31, 32, 33,
-35, 36, 37, 38, 39, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
-10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 0,
-1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
-16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
-31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45,
-46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
-61, 62, 63, 64, 65, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
-10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
-25, 26, 27, 28, 29, 30, 31, 32, 33, 51, 0, 1, 2, 3, 4,
-5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
-20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
-35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
-50, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65,
-66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 0, 1, 2,
-3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
-18, 19, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
-13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
-28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 0, 1,
-2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
-17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
-32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46,
-47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
-62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76,
-77, 74, 75, 92, 93, 116, 143, 144, 149, 14, 15, 34, 35, 36, 37,
-68, 69, 98, 99, 104, 105, 110, 111, 154, 155, 156, 157, 166, 167, 168,
-169, 178, 179, 180, 181, 4, 5, 6, 7, 22, 23, 24, 25, 46, 47,
-50, 51, 56, 57, 60, 61, 80, 82, 85, 87, 121, 122, 123, 124, 133,
-134, 135, 136, 190, 191, 194, 197, 202, 203, 206, 207, 212, 213, 216, 217,
-0, 1, 2, 3, 8, 9, 10, 11, 12, 13, 16, 17, 18, 19, 20,
-21, 26, 27, 28, 29, 30, 31, 32, 33, 38, 39, 40, 41, 42, 43,
-44, 45, 48, 49, 52, 53, 54, 55, 58, 59, 62, 63, 64, 65, 66,
-67, 70, 71, 72, 73, 76, 77, 78, 79, 81, 83, 84, 86, 88, 89,
-90, 91, 94, 95, 96, 97, 100, 101, 102, 103, 106, 107, 108, 109, 112,
-113, 114, 115, 117, 118, 119, 120, 125, 126, 127, 128, 129, 130, 131, 132,
-137, 138, 139, 140, 141, 142, 145, 146, 147, 148, 150, 151, 152, 153, 158,
-159, 160, 161, 162, 163, 164, 165, 170, 171, 172, 173, 174, 175, 176, 177,
-182, 183, 184, 185, 186, 187, 188, 189, 192, 193, 195, 196, 198, 199, 200,
-201, 204, 205, 208, 209, 210, 211, 214, 215, 218, 219, 220, 221, 0, 1,
-2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
-17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
-32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 0, 1, 2,
-3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
-18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32,
-33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
-48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,
-63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77,
-78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92,
-93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
-108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122,
-123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137,
-138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152,
-153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167,
-168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182,
-183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197,
-198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212,
-213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227,
-228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242,
-243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257,
-258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272,
-273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287,
-288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302,
-303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317,
-318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332,
-333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347,
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-363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377,
-0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
-15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
-30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
-45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 0, 1, 2, 3,
-4, 5, 6, 7, 0, 1, 14, 15, 16, 17, 2, 3, 4, 5, 8,
-9, 10, 11, 12, 13, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
-28, 29, 30, 31, 32, 33, 11, 2, 5, 10, 8, 4, 9, 1, 7,
-3, 0, 6, 42, 45, 36, 39, 12, 16, 18, 22, 38, 41, 44, 47,
-37, 40, 43, 46, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
-11, 13, 14, 15, 17, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29,
-30, 31, 32, 33, 34, 35, 0, 1, 2, 3, 4, 5, 6, 7, 8,
-9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
-24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
-39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
-54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68,
-69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83,
-84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98,
-99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
-114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128,
-129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
-144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158,
-159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173,
-174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188,
-189, 190, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
-13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
-28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
-43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
-58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
-73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87,
-88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102,
-103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 4, 5,
-6, 8, 1, 3, 0, 2, 7, 9, 0, 1, 2, 3, 4, 5, 6,
-7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
-22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
-37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
-52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66,
-67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81,
-82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96,
-97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
-112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126,
-127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141,
-142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156,
-157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171,
-172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186,
-187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201,
-202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216,
-217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231,
-232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246,
-247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261,
-262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276,
-277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291,
-292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306,
-307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321,
-322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336,
-337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351,
-352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366,
-367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381,
-382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396,
-397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411,
-412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426,
-427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441,
-442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456,
-457, 458, 459, 460, 461, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471,
-472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483, 484, 485, 486,
-487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 501,
-502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513, 514, 515, 516,
-517, 518, 519, 520, 521, 522, 523, 524, 525, 526, 527, 528, 529, 530, 531,
-532, 533, 534, 535, 536, 537, 538, 539, 540, 541, 542, 543, 544, 545, 546,
-547, 548, 549, 550, 551, 552, 553, 554, 555, 556, 557, 558, 559, 560, 561,
-562, 563, 564, 565, 566, 567, 568, 569, 570, 571, 572, 573, 574, 575, 576,
-577, 578, 579, 580, 581, 582, 583, 584, 585, 586, 587, 588, 589, 590, 591,
-592, 593, 594, 595, 596, 597, 598, 599, 600, 601, 602, 603, 604, 605, 606,
-607, 608, 609, 610, 611, 612, 613, 614, 615, 616, 617, 618, 619, 620, 621,
-622, 623, 624, 625, 626, 627, 628, 629, 630, 631, 632, 633, 634, 635, 636,
-637, 638, 639, 640, 641, 642, 643, 644, 645, 646, 647, 648, 649, 650, 651,
-652, 653, 654, 655, 656, 657, 658, 659, 660, 661, 662, 663, 664, 665, 666,
-667, 668, 669, 670, 671, 672, 673, 674, 675, 676, 677, 678, 679, 680, 681,
-682, 683, 684, 685, 686, 687, 688, 689, 690, 691, 692, 693, 694, 695, 696,
-697, 698, 699, 700, 701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711,
-712, 713, 714, 715, 716, 717, 718, 719, 720, 721, 722, 723, 724, 725, 726,
-727, 728, 729, 730, 731, 732, 733, 734, 735, 736, 737, 738, 739, 740, 741,
-742, 743, 744, 745, 746, 747, 748, 749, 750, 751, 752, 753, 754, 755, 756,
-757, 758, 759, 760, 761, 762, 763, 764, 765, 766, 767, 768, 769, 770, 771,
-772, 773, 774, 775, 776, 777, 778, 779, 780, 781, 782, 783, 784, 785, 786,
-787, 788, 789, 790, 791, 792, 793, 794, 795, 796, 797, 798, 799, 800, 801,
-802, 803, 804, 805, 806, 807, 808, 809, 810, 811, 812, 813, 814, 815, 816,
-817, 818, 819, 820, 821, 822, 823, 824, 825, 826, 827, 828, 829, 830, 831,
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-847, 848, 849, 850, 851, 852, 853, 854, 855, 856, 857, 858, 859, 860, 861,
-862, 863, 864, 865, 866, 867, 868, 869, 870, 871, 872, 873, 874, 875, 876,
-877, 878, 879, 880, 881, 882, 883, 884, 885, 886, 887, 888, 889, 890, 891,
-892, 893, 894, 895, 896, 897, 898, 899, 900, 901, 902, 903, 904, 905, 906,
-907, 908, 909, 910, 911, 912, 913, 914, 915, 916, 917, 918, 919, 920, 921,
-922, 923, 924, 925, 926, 927, 928, 929, 930, 931, 932, 933, 934, 935, 936,
-937, 938, 939, 940, 941, 942, 943, 944, 945, 946, 947, 948, 949, 950, 951,
-952, 953, 954, 955, 956, 957, 958, 959, 960, 961, 962, 963, 964, 965, 966,
-967, 968, 969, 970, 971, 972, 973, 974, 975, 976, 977, 978, 979, 980, 981,
-982, 983, 984, 985, 986, 987, 988, 989, 990, 991, 992, 993, 994, 995, 996,
-997, 998, 999, 1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011,
-1012, 1013, 1014, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026,
-1027, 1028, 1029, 1030, 1031, 1032, 1033, 1034, 1035, 1036, 1037, 1038, 1039, 1040, 1041,
-1042, 1043, 1044, 1045, 1046, 1047, 1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055, 1056,
-1057, 1058, 1059, 1060, 1061, 1062, 1063, 1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071,
-1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
-1087, 1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098, 1099, 1100, 1101,
-1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109, 1110, 1111, 1112, 1113, 1114, 1115, 1116,
-1117, 1118, 1119, 1120, 1121, 1122, 1123, 1124, 1125, 1126, 1127, 1128, 1129, 1130, 1131,
-1132, 1133, 1134, 1135, 1136, 1137, 1138, 1139, 1140, 1141, 1142, 1143, 1144, 1145, 1146,
-1147, 1148, 1149, 1150, 1151, 1152, 1153, 1154, 1155, 1156, 1157, 1158, 1159, 1160, 1161,
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-1177, 1178, 1179, 1180, 1181, 1182, 1183, 1184, 1185, 1186, 1187, 1188, 1189, 1190, 1191,
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-1222, 1223, 1224, 1225, 1226, 1227, 1228, 1229, 1230, 1231, 1232, 1233, 1234, 1235, 1236,
-1237, 1238, 1239, 1240, 1241, 1242, 1243, 1244, 1245, 1246, 1247, 1248, 1249, 1250, 1251,
-1252, 1253, 1254, 1255, 1256, 1257, 1258, 1259, 1260, 1261, 1262, 1263, 1264, 1265, 1266,
-1267, 1268, 1269, 1270, 1271, 1272, 1273, 1274, 1275, 1276, 1277, 1278, 1279, 1280, 1281,
-1282, 1283, 1284, 1285, 1286, 1287, 1288, 1289, 1290, 1291, 1292, 1293, 1294, 1295, 1296,
-1297, 1298, 1299, 1300, 1301, 1302, 1303, 1304, 1305, 1306, 1307, 1308, 1309, 1310, 1311,
-1312, 1313, 1314, 1315, 1316, 1317, 1318, 1319, 1320, 1321, 1322, 1323, 1324, 1325, 1326,
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-1342, 1343, 1344, 1345, 1346, 1347, 1348, 1349, 1350, 1351, 1352, 1353, 1354, 1355, 1356,
-1357, 1358, 1359, 1360, 1361, 1362, 1363, 1364, 1365, 1366, 1367, 1368, 1369, 1370, 1371,
-1372, 1373, 1374, 1375, 1376, 1377, 1378, 1379, 1380, 1381, 1382, 1383, 1384, 1385, 1386,
-1387, 1388, 1389, 1390, 1391, 1392, 1393, 1394, 1395, 1396, 1397, 1398, 1399, 1400, 1401,
-1402, 1403, 1404, 1405, 1406, 1407, 1408, 1409, 1410, 1411, 1412, 1413, 1414, 1415, 1416,
-1417, 1418, 1419, 1420, 1421, 1422, 1423, 1424, 1425, 1426, 1427, 1428, 1429, 1430, 1431,
-1432, 1433, 1434, 1435, 1436, 1437, 1438, 1439, 1440, 1441, 1442, 1443, 1444, 1445, 1446,
-1447, 1448, 1449, 1450, 1451, 1452, 1453, 1454, 1455, 1456, 1457, 1458, 1459, 1460, 1461,
-1462, 1463, 1464, 1465, 1466, 1467, 1468, 1469, 1470, 1471, 1472, 1473, 1474, 1475, 1476,
-1477, 1478, 1479, 1480, 1481, 1482, 1483, 1484, 1485, 1486, 1487, 1488, 1489, 1490, 1491,
-1492, 1493, 1494, 1495, 1496, 1497, 1498, 1499, 1500, 1501, 1502, 1503, 1504, 1505, 1506,
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-1522, 1523, 1524, 1525, 1526, 1527, 1528, 1529, 1530, 1531, 1532, 1533, 1534, 1535, 1536,
-1537, 1538, 1539, 1540, 1541, 1542, 1543, 1544, 1545, 1546, 1547, 1548, 1549, 1550, 1551,
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-1582, 1583, 1584, 1585, 1586, 1587, 1588, 1589, 1590, 1591, 1592, 1593, 1594, 1595, 1596,
-1597, 1598, 1599, 1600, 1601, 1602, 1603, 1604, 1605, 1606, 1607, 1608, 1609, 1610, 1611,
-1612, 1613, 1614, 1615, 1616, 1617, 1618, 1619, 1620, 1621, 1622, 1623, 1624, 1625, 1626,
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-1642, 1643, 1644, 1645, 1646, 1647, 1648, 1649, 1650, 1651, 1652, 1653, 1654, 1655, 1656,
-1657, 1658, 1659, 1660, 1661, 1662, 1663, 1664, 1665, 1666, 1667, 1668, 1669, 1670, 1671,
-1672, 1673, 1674, 1675, 1676, 1677, 1678, 1679, 1680, 1681, 1682, 1683, 1684, 1685, 1686,
-1687, 1688, 1689, 1690, 1691, 1692, 1693, 1694, 1695, 1696, 1697, 1698, 1699, 1700, 1701,
-1702, 1703, 1704, 1705, 1706, 1707, 1708, 1709, 1710, 1711, 1712, 1713, 1714, 1715, 1716,
-1717, 1718, 1719, 1720, 1721, 1722, 1723, 1724, 1725, 1726, 1727, 1728, 1729, 1730, 1731,
-1732, 1733, 1734, 1735, 1736, 1737, 1738, 1739, 1740, 1741, 1742, 1743, 1744, 1745, 1746,
-1747, 1748, 1749, 1750, 1751, 1752, 1753, 1754, 1755, 1756, 1757, 1758, 1759, 1760, 1761,
-1762, 1763, 1764, 1765, 1766, 1767, 1768, 1769, 1770, 1771, 1772, 1773, 1774, 1775, 1776,
-1777, 1778, 1779, 1780, 1781, 1782, 1783, 1784, 1785, 1786, 1787, 1788, 1789, 1790, 1791,
-1792, 1793, 1794, 1795, 1796, 1797, 1798, 1799, 1800, 1801, 1802, 1803, 1804, 1805, 1806,
-1807, 1808, 1809, 1810, 1811, 1812, 1813, 1814, 1815, 1816, 1817, 1818, 1819, 1820, 1821,
-1822, 1823, 1824, 1825, 1826, 1827, 1828, 1829, 1830, 1831, 1832, 1833, 1834, 1835, 1836,
-1837, 1838, 1839, 1840, 1841, 1842, 1843, 1844, 1845, 1846, 1847, 1848, 1849, 1850, 1851,
-1852, 1853, 1854, 1855, 1856, 1857, 1858, 1859, 1860, 1861, 1862, 1863, 1864, 1865, 1866,
-1867, 1868, 1869, 1870, 1871, 1872, 1873, 1874, 1875, 1876, 1877, 1878, 1879, 1880, 1881,
-1882, 1883, 1884, 1885, 1886, 1887, 1888, 1889, 1890, 1891, 1892, 1893, 1894, 1895, 1896,
-1897, 1898, 1899, 1900, 1901, 1902, 1903, 1904, 1905, 1906, 1907, 1908, 1909, 1910, 1911,
-1912, 1913, 1914, 1915, 1916, 1917, 1918, 1919, 1920, 1921, 1922, 1923, 1924, 1925, 1926,
-1927, 1928, 1929, 1930, 1931, 1932, 1933, 1934, 1935, 1936, 1937, 1938, 1939, 1940, 1941,
-1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956,
-1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971,
-1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986,
-1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027, 2028, 2029, 2030, 2031,
-2032, 2033, 2034, 2035, 2036, 2037, 2038, 2039, 2040, 2041, 2042, 2043, 2044, 2045, 2046,
-2047, 2048, 2049, 2050, 2051, 2052, 2053, 2054, 2055, 2056, 2057, 2058, 2059, 2060, 2061,
-2062, 2063, 2064, 2065, 2066, 2067, 2068, 2069, 2070, 2071, 2072, 2073, 2074, 2075, 2076,
-2077, 2078, 2079, 2080, 2081, 2082, 2083, 2084, 2085, 2086, 2087, 2088, 2089, 2090, 2091,
-2092, 2093, 2094, 2095, 2096, 2097, 2098, 2099, 2100, 2101, 2102, 2103, 2104, 2105, 2106,
-2107, 2108, 2109, 2110, 2111, 2112, 2113, 2114, 2115, 2116, 2117, 2118, 2119, 2120, 2121,
-2122, 2123, 2124, 2125, 2126, 2127, 2128, 2129, 2130, 2131, 2132, 2133, 2134, 2135, 2136,
-2137, 2138, 2139, 2140, 2141, 2142, 2143, 2144, 2145, 2146, 2147, 2148, 2149, 2150, 2151,
-2152, 2153, 2154, 2155, 2156, 2157, 2158, 2159, 2160, 2161, 2162, 2163, 2164, 2165, 2166,
-2167, 2168, 2169, 2170, 2171, 2172, 2173, 2174, 2175, 2176, 2177, 2178, 2179, 2180, 2181,
-2182, 2183, 2184, 2185, 2186, 2187, 2188, 2189, 2190, 2191, 2192, 2193, 2194, 2195, 2196,
-2197, 2198, 2199, 2200, 2201, 2202, 2203, 2204, 2205, 2206, 2207, 2208, 2209, 2210, 2211,
-2212, 2213, 2214, 2215, 2216, 2217, 2218, 2219, 2220, 2221, 2222, 2223, 2224, 2225, 2226,
-2227, 2228, 2229, 2230, 2231, 2232, 2233, 2234, 2235, 2236, 2237, 2238, 2239, 2240, 2241,
-2242, 2243, 2244, 2245, 2246, 2247, 2248, 2249, 2250, 2251, 2252, 2253, 2254, 2255, 2256,
-2257, 2258, 2259, 2260, 2261, 2262, 2263, 2264, 2265, 2266, 2267, 2268, 2269, 2270, 2271,
-2272, 2273, 2274, 2275, 2276, 2277, 2278, 2279, 2280, 2281, 2282, 2283, 2284, 2285, 2286,
-2287, 2288, 2289, 2290, 2291, 2292, 2293, 2294, 2295, 2296, 2297, 2298, 2299, 2300, 2301,
-2302, 2303, 2304, 2305, 2306, 2307, 2308, 2309, 2310, 2311, 2312, 2313, 2314, 2315, 2316,
-2317, 2318, 2319, 2320, 2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328, 2329, 2330, 2331,
-2332, 2333, 2334, 2335, 2336, 2337, 2338, 2339, 2340, 2341, 2342, 2343, 2344, 2345, 2346,
-2347, 2348, 2349, 2350, 2351, 2352, 2353, 2354, 2355, 2356, 2357, 2358, 2359, 2360, 2361,
-2362, 2363, 2364, 2365, 2366, 2367, 2368, 2369, 2370, 2371, 2372, 2373, 2374, 2375, 2376,
-2377, 2378, 2379, 2380, 2381, 2382, 2383, 2384, 2385, 2386, 2387, 2388, 2389, 2390, 2391,
-2392, 2393, 2394, 2395, 2396, 2397, 2398, 2399, 2400, 2401, 2402, 2403, 2404, 2405, 2406,
-2407, 2408, 2409, 2410, 2411, 2412, 2413, 2414, 2415, 2416, 2417, 2418, 2419, 2420, 2421,
-2422, 2423, 2424, 2425, 2426, 2427, 2428, 2429, 2430, 2431, 2432, 2433, 2434, 2435, 2436,
-2437, 2438, 2439, 2440, 2441, 2442, 2443, 2444, 2445, 2446, 2447, 2448, 2449, 2450, 2451,
-2452, 2453, 2454, 2455, 2456, 2457, 2458, 2459, 2460, 2461, 2462, 2463, 2464, 2465, 2466,
-2467, 2468, 2469, 2470, 2471, 2472, 2473, 2474, 2475, 2476, 2477, 2478, 2479, 2480, 2481,
-2482, 2483, 2484, 2485, 2486, 2487, 2488, 2489, 2490, 2491, 2492, 2493, 2494, 2495, 2496,
-2497, 2498, 2499, 2500, 2501, 2502, 2503, 2504, 2505, 2506, 2507, 2508, 2509, 2510, 2511,
-2512, 2513, 2514, 2515, 2516, 2517, 2518, 2519, 2520, 2521, 2522, 2523, 2524, 2525, 2526,
-2527, 2528, 2529, 2530, 2531, 2532, 2533, 2534, 2535, 2536, 2537, 2538, 2539, 2540, 2541,
-2542, 2543, 2544, 2545, 2546, 2547, 2548, 2549, 2550, 2551, 2552, 2553, 2554, 2555, 2556,
-2557, 2558, 2559, 2560, 2561, 2562, 2563, 2564, 2565, 2566, 2567, 2568, 2569, 2570, 2571,
-2572, 2573, 2574, 2575, 2576, 2577, 2578, 2579, 2580, 2581, 2582, 2583, 2584, 2585, 2586,
-2587, 2588, 2589, 2590, 2591, 2592, 2593, 2594, 2595, 2596, 2597, 2598, 2599, 2600, 2601,
-2602, 2603, 2604, 2605, 2606, 2607, 2608, 2609, 2610, 2611, 2612, 2613, 2614, 2615, 2616,
-2617, 2618, 2619, 2620, 2621, 2622, 2623, 2624, 2625, 2626, 2627, 2628, 2629, 2630, 2631,
-2632, 2633, 2634, 2635, 2636, 2637, 2638, 2639, 2640, 2641, 2642, 2643, 2644, 2645, 2646,
-2647, 2648, 2649, 2650, 2651, 2652, 2653, 2654, 2655, 2656, 2657, 2658, 2659, 2660, 2661,
-2662, 2663, 2664, 2665, 2666, 2667, 2668, 2669, 2670, 2671, 2672, 2673, 2674, 2675, 2676,
-2677, 2678, 2679, 2680, 2681, 2682, 2683, 2684, 2685, 2686, 2687, 2688, 2689, 2690, 2691,
-2692, 2693, 2694, 2695, 2696, 2697, 2698, 2699, 2700, 2701, 2702, 2703, 2704, 2705, 2706,
-2707, 2708, 2709, 2710, 2711, 2712, 2713, 2714, 2715, 2716, 2717, 2718, 2719, 2720, 2721,
-2722, 2723, 2724, 2725, 2726, 2727, 2728, 2729, 2730, 2731, 2732, 2733, 2734, 2735, 2736,
-2737, 2738, 2739, 2740, 2741, 2742, 2743, 2744, 2745, 2746, 2747, 2748, 2749, 2750, 2751,
-2752, 2753, 2754, 2755, 2756, 2757, 2758, 2759, 2760, 2761, 2762, 2763, 2764, 2765, 2766,
-2767, 2768, 2769, 2770, 2771, 2772, 2773, 2774, 2775, 2776, 2777, 2778, 2779, 2780, 2781,
-2782, 2783, 2784, 2785, 2786, 2787, 2788, 2789, 2790, 2791, 2792, 2793, 2794, 2795, 2796,
-2797, 2798, 2799, 2800, 2801, 2802, 2803, 2804, 2805, 2806, 2807, 2808, 2809, 2810, 2811,
-2812, 2813, 2814, 2815, 2816, 2817, 2818, 2819, 2820, 2821, 2822, 2823, 2824, 2825, 2826,
-2827, 2828, 2829, 2830, 2831, 2832, 2833, 2834, 2835, 2836, 2837, 2838, 2839, 2840, 2841,
-2842, 2843, 2844, 2845, 2846, 2847, 2848, 2849, 2850, 2851, 2852, 2853, 2854, 2855, 2856,
-2857, 2858, 2859, 2860, 2861, 2862, 2863, 9, 11, 6, 7, 8, 10, 4, 5,
-0, 1, 2, 3, 0, 2, 10, 3, 6, 1, 9, 11, 4, 8, 7,
-5, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
-14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28,
-29, 30, 31, 32, 33, 34, 35, 68, 116, 22, 10, 97, 117, 52, 110,
-7, 19, 111, 115, 6, 18, 0, 74, 88, 12, 48, 108, 99, 109, 38,
-104, 4, 16, 24, 96, 15, 3, 50, 84, 71, 85, 36, 102, 103, 119,
-54, 86, 100, 30, 25, 105, 113, 69, 53, 63, 98, 87, 93, 89, 95,
-9, 21, 62, 114, 5, 17, 26, 55, 2, 14, 65, 8, 20, 64, 92,
-42, 106, 11, 23, 46, 66, 34, 101, 107, 56, 35, 47, 57, 67, 76,
-118, 75, 83, 82, 94, 37, 77, 29, 51, 1, 13, 27, 49, 58, 112,
-39, 59, 28, 70, 44, 73, 80, 81, 32, 72, 31, 43, 33, 40, 41,
-45, 60, 61, 78, 79, 90, 91
-};
-
-
-/**Function*************************************************************
-
-  Synopsis    [Reads library from array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Dar_LibReadNodes()
-{
-    Vec_Int_t * vResult;
-    int i;
-    vResult = Vec_IntAlloc( s_nDataSize1 );
-    for ( i = 0; i < s_nDataSize1; i++ )
-        Vec_IntPush( vResult, s_Data1[i] );
-    return vResult;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reads library from array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Dar_LibReadOuts()
-{
-    Vec_Int_t * vResult;
-    int i;
-    vResult = Vec_IntAlloc( s_nDataSize2 );
-    for ( i = 0; i < s_nDataSize2; i++ )
-        Vec_IntPush( vResult, s_Data2[i] );
-    return vResult;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reads library from array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Dar_LibReadPrios()
-{
-    Vec_Int_t * vResult;
-    int i;
-    vResult = Vec_IntAlloc( s_nDataSize3 );
-    for ( i = 0; i < s_nDataSize3; i++ )
-        Vec_IntPush( vResult, s_Data3[i] );
-    return vResult;
-}
-
-//#if 0
-
-#include "abc.h"
-
-/**Function*************************************************************
-
-  Synopsis    [Generate arrays.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_NtkGenerateArrays( Abc_Ntk_t * pNtk )
-{
-    extern int Io_WriteAigerEncode( char * pBuffer, int Pos, unsigned x );
-
-    Abc_Obj_t * pObj;
-    int i, Count = 0;
-    assert( Abc_NtkPiNum(pNtk) == 4 );
-    assert( Abc_NtkIsStrash(pNtk) );
-    assert( Abc_ObjFanoutNum(Abc_AigConst1(pNtk)) == 0 );
-/*
-    {
-        unsigned char * pBuffer;
-        int Pos, uLit, uLit0, uLit1, Size, Digit;
-
-        Abc_NtkForEachPi( pNtk, pObj, i )
-            pObj->pCopy = (void *)Count++;
-
-        Pos = 0;
-        pBuffer = ALLOC( char, 200000 );
-        Abc_AigForEachAnd( pNtk, pObj, i )
-        {
-            pObj->pCopy = (void *)Count++;
-            uLit  = ((int)pObj->pCopy << 1);
-            uLit0 = (((int)Abc_ObjFanin0(pObj)->pCopy) << 1) | Abc_ObjFaninC0(pObj);
-            uLit1 = (((int)Abc_ObjFanin1(pObj)->pCopy) << 1) | Abc_ObjFaninC1(pObj);
-            assert( uLit0 < uLit1 );
-            Pos = Io_WriteAigerEncode( pBuffer, Pos, uLit  - uLit1 );
-            Pos = Io_WriteAigerEncode( pBuffer, Pos, uLit1 - uLit0 );
-        }
-        // write the buffer
-        Size = 0;
-        for ( i = 0; i < Pos; i++ )
-        {
-            if ( i % 36 == 0 )
-                printf( "\n" );
-
-            Digit = pBuffer[i] & 0xF;
-            if ( Digit < 10 )
-                printf( "%d", Digit );
-            else 
-                printf( "%c", Digit - 10 + 'A' );
-
-
-            Digit = pBuffer[i];
-            Digit >>= 4;
-            if ( Digit < 10 )
-                printf( "%d", Digit );
-            else 
-                printf( "%c", Digit - 10 + 'A' );
-
-        }
-        printf( "\n" );
-        printf( "Size = %d.\n", Pos );
-    }
-*/
-
-
-    Abc_NtkForEachPi( pNtk, pObj, i )
-        pObj->pCopy = (void *)Count++;
-    Abc_AigForEachAnd( pNtk, pObj, i )
-    {
-//        if ( (Count - 4) % 6 == 0 )
-//            printf( "\n" );
-//        printf( "%5d,", (((int)Abc_ObjFanin0(pObj)->pCopy) << 1) | Abc_ObjFaninC0(pObj) );
-//        printf( "%5d,", (((int)Abc_ObjFanin1(pObj)->pCopy) << 1) | Abc_ObjFaninC1(pObj) );
-        pObj->pCopy = (void *)Count++;
-    }
-//    printf( "\n" );
-//    printf( "Nodes = %d.\n", Count-4 );
-
-
-
-    Abc_NtkForEachPo( pNtk, pObj, i )
-    {
-        if ( i % 12 == 0 )
-            printf( "\n" );
-        printf( "%5d,",  (int)Abc_ObjFanin0(pObj)->pCopy );
-    }
-    printf( "\n" );
-    printf( "Outputs = %d.\n", Abc_NtkPoNum(pNtk) );
-
-
-/*
-    {
-        unsigned char * pBuffer;
-        Vec_Int_t * vOuts;
-        int Pos, Prev, Out;
-
-        vOuts = Vec_IntAlloc( 25000 );
-        Abc_NtkForEachPo( pNtk, pObj, i )
-            Vec_IntPush( vOuts, Abc_ObjFaninId0(pObj) );
-        Vec_IntSort( vOuts, 0 );
-
-        Pos = 0;
-        pBuffer = ALLOC( char, 50000 );
-        Prev = 0;
-        Vec_IntForEachEntry( vOuts, Out, i )
-        {
-            assert( Prev < Out );
-            Pos = Io_WriteAigerEncode( pBuffer, Pos, Out - Prev );
-            Prev = Out;
-        }
-        Vec_IntFree( vOuts );
-
-        // write the buffer
-        for ( i = 0; i < Pos; i++ )
-        {
-            if ( i % 32 == 0 )
-                printf( "\n" );
-            printf( "%d,",  pBuffer[i] );
-        }
-        printf( "\n" );
-        printf( "Size = %d.\n", Pos );
-    }
-*/
-
-}
-
-//#endif
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darInt.h b/src/aig/dar/darInt.h
deleted file mode 100644
index 97331416..00000000
--- a/src/aig/dar/darInt.h
+++ /dev/null
@@ -1,165 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darInt.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Internal declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darInt.h,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __DAR_INT_H__
-#define __DAR_INT_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-
-#include "vec.h"
-#include "aig.h"
-#include "dar.h"
-#include "bar.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Dar_Man_t_            Dar_Man_t;
-typedef struct Dar_Cut_t_            Dar_Cut_t;
-
-// the AIG 4-cut
-struct Dar_Cut_t_  // 6 words
-{
-    unsigned         uSign;          // cut signature
-    unsigned         uTruth  : 16;   // the truth table of the cut function
-    unsigned         Value   : 11;   // the value of the cut 
-    unsigned         fBest   :  1;   // marks the best cut
-    unsigned         fUsed   :  1;   // marks the cut currently in use
-    unsigned         nLeaves :  3;   // the number of leaves
-    int              pLeaves[4];     // the array of leaves
-};
-
-// the AIG manager
-struct Dar_Man_t_
-{
-    // input data
-    Dar_RwrPar_t *   pPars;          // rewriting parameters
-    Aig_Man_t *      pAig;           // AIG manager 
-    // various data members
-    Aig_MmFixed_t *  pMemCuts;       // memory manager for cuts
-    void *           pManCnf;        // CNF managers
-    // current rewriting step
-    Vec_Ptr_t *      vLeavesBest;    // the best set of leaves
-    int              OutBest;        // the best output (in the library)
-    int              OutNumBest;     // the best number of the output
-    int              GainBest;       // the best gain
-    int              LevelBest;      // the level of node with the best gain
-    int              ClassBest;      // the equivalence class of the best replacement
-    // function statistics
-    int              nTotalSubgs;    // the total number of subgraphs tried
-    int              ClassTimes[222];// the runtimes for each class
-    int              ClassGains[222];// the gains for each class
-    int              ClassSubgs[222];// the graphs for each class
-    int              nCutMemUsed;    // memory used for cuts
-    // rewriting statistics
-    int              nNodesInit;     // the original number of nodes
-    int              nNodesTried;    // the number of nodes attempted
-    int              nCutsAll;       // all cut pairs
-    int              nCutsTried;     // computed cuts
-    int              nCutsUsed;      // used cuts
-    int              nCutsBad;       // bad cuts due to absent fanin
-    int              nCutsGood;      // good cuts
-    int              nCutsSkipped;   // skipped bad cuts
-    // timing statistics
-    int              timeCuts;
-    int              timeEval;
-    int              timeOther;
-    int              timeTotal;
-    int              time1;
-    int              time2;
-};
-
-static inline Dar_Cut_t *  Dar_ObjCuts( Aig_Obj_t * pObj )                         { return pObj->pData;    }
-static inline void         Dar_ObjSetCuts( Aig_Obj_t * pObj, Dar_Cut_t * pCuts )   { assert( !Aig_ObjIsNone(pObj) ); pObj->pData = pCuts;   }
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                          ITERATORS                               ///
-////////////////////////////////////////////////////////////////////////
-
-// iterator over all cuts of the node
-#define Dar_ObjForEachCutAll( pObj, pCut, i )                                   \
-    for ( (pCut) = Dar_ObjCuts(pObj), i = 0; i < (int)(pObj)->nCuts; i++, pCut++ ) 
-#define Dar_ObjForEachCut( pObj, pCut, i )                                      \
-    for ( (pCut) = Dar_ObjCuts(pObj), i = 0; i < (int)(pObj)->nCuts; i++, pCut++ ) if ( (pCut)->fUsed==0 ) {} else
-// iterator over leaves of the cut
-#define Dar_CutForEachLeaf( p, pCut, pLeaf, i )                                 \
-    for ( i = 0; (i < (int)(pCut)->nLeaves) && (((pLeaf) = Aig_ManObj(p, (pCut)->pLeaves[i])), 1); i++ )
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== darBalance.c ========================================================*/
-/*=== darCore.c ===========================================================*/
-/*=== darCut.c ============================================================*/
-extern void            Dar_ManCutsStart( Dar_Man_t * p );
-extern void            Dar_ManCutsFree( Dar_Man_t * p );
-extern Dar_Cut_t *     Dar_ObjComputeCuts_rec( Dar_Man_t * p, Aig_Obj_t * pObj );
-extern Dar_Cut_t *     Dar_ObjComputeCuts( Dar_Man_t * p, Aig_Obj_t * pObj );
-/*=== darData.c ===========================================================*/
-extern Vec_Int_t *     Dar_LibReadNodes();
-extern Vec_Int_t *     Dar_LibReadOuts();
-extern Vec_Int_t *     Dar_LibReadPrios();
-/*=== darLib.c ============================================================*/
-extern void            Dar_LibStart();
-extern void            Dar_LibStop();
-extern void            Dar_LibPrepare( int nSubgraphs );
-extern void            Dar_LibReturnCanonicals( unsigned * pCanons );
-extern void            Dar_LibEval( Dar_Man_t * p, Aig_Obj_t * pRoot, Dar_Cut_t * pCut, int Required );
-extern Aig_Obj_t *     Dar_LibBuildBest( Dar_Man_t * p );
-/*=== darMan.c ============================================================*/
-extern Dar_Man_t *     Dar_ManStart( Aig_Man_t * pAig, Dar_RwrPar_t * pPars );
-extern void            Dar_ManStop( Dar_Man_t * p );
-extern void            Dar_ManPrintStats( Dar_Man_t * p );
-/*=== darPrec.c ============================================================*/
-extern char **         Dar_Permutations( int n );
-extern void            Dar_Truth4VarNPN( unsigned short ** puCanons, char ** puPhases, char ** puPerms, unsigned char ** puMap );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/dar/darLib.c b/src/aig/dar/darLib.c
deleted file mode 100644
index 14a47cee..00000000
--- a/src/aig/dar/darLib.c
+++ /dev/null
@@ -1,980 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darLib.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Library of AIG subgraphs used for rewriting.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darLib.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Dar_Lib_t_            Dar_Lib_t;
-typedef struct Dar_LibObj_t_         Dar_LibObj_t;
-typedef struct Dar_LibDat_t_         Dar_LibDat_t;
-
-struct Dar_LibObj_t_ // library object (2 words)
-{
-    unsigned         Fan0    : 16;  // the first fanin
-    unsigned         Fan1    : 16;  // the second fanin
-    unsigned         fCompl0 :  1;  // the first compl attribute
-    unsigned         fCompl1 :  1;  // the second compl attribute
-    unsigned         fPhase  :  1;  // the phase of the node
-    unsigned         fTerm   :  1;  // indicates a PI
-    unsigned         Num     : 28;  // internal use
-};
-
-struct Dar_LibDat_t_ // library object data
-{
-    Aig_Obj_t *      pFunc;         // the corresponding AIG node if it exists
-    int              Level;         // level of this node after it is constructured
-    int              TravId;        // traversal ID of the library object data
-    unsigned char    fMffc;         // set to one if node is part of MFFC
-    unsigned char    nLats[3];      // the number of latches on the input/output stem
-};
-
-struct Dar_Lib_t_ // library 
-{
-    // objects
-    Dar_LibObj_t *   pObjs;         // the set of library objects
-    int              nObjs;         // the number of objects used
-    int              iObj;          // the current object
-    // structures by class
-    int              nSubgr[222];   // the number of subgraphs by class
-    int *            pSubgr[222];   // the subgraphs for each class
-    int *            pSubgrMem;     // memory for subgraph pointers
-    int              nSubgrTotal;   // the total number of subgraph
-    // structure priorities
-    int *            pPriosMem;     // memory for priority of structures
-    int *            pPrios[222];   // pointers to the priority numbers
-    // structure places in the priorities
-    int *            pPlaceMem;     // memory for places of structures in the priority lists
-    int *            pPlace[222];   // pointers to the places numbers
-    // structure scores
-    int *            pScoreMem;     // memory for scores of structures
-    int *            pScore[222];   // pointers to the scores numbers
-    // nodes by class
-    int              nNodes[222];   // the number of nodes by class
-    int *            pNodes[222];   // the nodes for each class
-    int *            pNodesMem;     // memory for nodes pointers
-    int              nNodesTotal;   // the total number of nodes
-    // prepared library
-    int              nSubgraphs;
-    int              nNodes0Max;
-    // nodes by class
-    int              nNodes0[222];   // the number of nodes by class
-    int *            pNodes0[222];   // the nodes for each class
-    int *            pNodes0Mem;     // memory for nodes pointers
-    int              nNodes0Total;   // the total number of nodes
-    // structures by class
-    int              nSubgr0[222];   // the number of subgraphs by class
-    int *            pSubgr0[222];   // the subgraphs for each class
-    int *            pSubgr0Mem;     // memory for subgraph pointers
-    int              nSubgr0Total;   // the total number of subgraph
-    // object data
-    Dar_LibDat_t *   pDatas;
-    int              nDatas;
-    // information about NPN classes
-    char **          pPerms4;
-    unsigned short * puCanons; 
-    char *           pPhases; 
-    char *           pPerms; 
-    unsigned char *  pMap;
-};
-
-static Dar_Lib_t * s_DarLib = NULL;
-
-static inline Dar_LibObj_t * Dar_LibObj( Dar_Lib_t * p, int Id )    { return p->pObjs + Id; }
-static inline int            Dar_LibObjTruth( Dar_LibObj_t * pObj ) { return pObj->Num < (0xFFFF & ~pObj->Num) ? pObj->Num : (0xFFFF & ~pObj->Num); }
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dar_Lib_t * Dar_LibAlloc( int nObjs )
-{
-    unsigned uTruths[4] = { 0xAAAA, 0xCCCC, 0xF0F0, 0xFF00 };
-    Dar_Lib_t * p;
-    int i, clk = clock();
-    p = ALLOC( Dar_Lib_t, 1 );
-    memset( p, 0, sizeof(Dar_Lib_t) );
-    // allocate objects
-    p->nObjs = nObjs;
-    p->pObjs = ALLOC( Dar_LibObj_t, nObjs );
-    memset( p->pObjs, 0, sizeof(Dar_LibObj_t) * nObjs );
-    // allocate canonical data
-    p->pPerms4 = Dar_Permutations( 4 );
-    Dar_Truth4VarNPN( &p->puCanons, &p->pPhases, &p->pPerms, &p->pMap );
-    // start the elementary objects
-    p->iObj = 4;
-    for ( i = 0; i < 4; i++ )
-    {
-        p->pObjs[i].fTerm = 1;
-        p->pObjs[i].Num = uTruths[i];
-    }
-//    PRT( "Library start", clock() - clk );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Frees the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibFree( Dar_Lib_t * p )
-{
-    free( p->pObjs );
-    free( p->pDatas );
-    free( p->pNodesMem );
-    free( p->pNodes0Mem );
-    free( p->pSubgrMem );
-    free( p->pSubgr0Mem );
-    free( p->pPriosMem );
-    FREE( p->pPlaceMem );
-    FREE( p->pScoreMem );
-    free( p->pPerms4 );
-    free( p->puCanons );
-    free( p->pPhases );
-    free( p->pPerms );
-    free( p->pMap );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns canonical truth tables.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibReturnCanonicals( unsigned * pCanons )
-{
-    int Visits[222] = {0};
-    int i, k;
-    // find canonical truth tables
-    for ( i = k = 0; i < (1<<16); i++ )
-        if ( !Visits[s_DarLib->pMap[i]] )
-        {
-            Visits[s_DarLib->pMap[i]] = 1;
-            pCanons[k++] = ((i<<16) | i);
-        }
-    assert( k == 222 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one AND to the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibAddNode( Dar_Lib_t * p, int Id0, int Id1, int fCompl0, int fCompl1 )
-{
-    Dar_LibObj_t * pFan0 = Dar_LibObj( p, Id0 );
-    Dar_LibObj_t * pFan1 = Dar_LibObj( p, Id1 );
-    Dar_LibObj_t * pObj  = p->pObjs + p->iObj++;
-    pObj->Fan0 = Id0;
-    pObj->Fan1 = Id1;
-    pObj->fCompl0 = fCompl0;
-    pObj->fCompl1 = fCompl1;
-    pObj->fPhase = (fCompl0 ^ pFan0->fPhase) & (fCompl1 ^ pFan1->fPhase);
-    pObj->Num = 0xFFFF & (fCompl0? ~pFan0->Num : pFan0->Num) & (fCompl1? ~pFan1->Num : pFan1->Num);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one AND to the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibSetup_rec( Dar_Lib_t * p, Dar_LibObj_t * pObj, int Class, int fCollect )
-{
-    if ( pObj->fTerm || (int)pObj->Num == Class )
-        return;
-    pObj->Num = Class;
-    Dar_LibSetup_rec( p, Dar_LibObj(p, pObj->Fan0), Class, fCollect );
-    Dar_LibSetup_rec( p, Dar_LibObj(p, pObj->Fan1), Class, fCollect );
-    if ( fCollect )
-        p->pNodes[Class][ p->nNodes[Class]++ ] = pObj-p->pObjs;
-    else
-        p->nNodes[Class]++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one AND to the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibSetup( Dar_Lib_t * p, Vec_Int_t * vOuts, Vec_Int_t * vPrios )
-{
-    int fTraining = 0;
-    Dar_LibObj_t * pObj;
-    int nNodesTotal, uTruth, Class, Out, i, k;
-    assert( p->iObj == p->nObjs );
-
-    // count the number of representatives of each class
-    for ( i = 0; i < 222; i++ )
-        p->nSubgr[i] = p->nNodes[i] = 0;
-    Vec_IntForEachEntry( vOuts, Out, i )
-    {
-        pObj = Dar_LibObj( p, Out );
-        uTruth = Dar_LibObjTruth( pObj );
-        Class = p->pMap[uTruth];
-        p->nSubgr[Class]++;
-    }
-    // allocate memory for the roots of each class
-    p->pSubgrMem = ALLOC( int, Vec_IntSize(vOuts) );
-    p->pSubgr0Mem = ALLOC( int, Vec_IntSize(vOuts) );
-    p->nSubgrTotal = 0;
-    for ( i = 0; i < 222; i++ )
-    {
-        p->pSubgr[i] = p->pSubgrMem + p->nSubgrTotal;
-        p->pSubgr0[i] = p->pSubgr0Mem + p->nSubgrTotal;
-        p->nSubgrTotal += p->nSubgr[i];
-        p->nSubgr[i] = 0;
-    }
-    assert( p->nSubgrTotal == Vec_IntSize(vOuts) );
-    // add the outputs to storage
-    Vec_IntForEachEntry( vOuts, Out, i )
-    {
-        pObj = Dar_LibObj( p, Out );
-        uTruth = Dar_LibObjTruth( pObj );
-        Class = p->pMap[uTruth];
-        p->pSubgr[Class][ p->nSubgr[Class]++ ] = Out;
-    }
-
-    if ( fTraining )
-    {
-        // allocate memory for the priority of roots of each class
-        p->pPriosMem = ALLOC( int, Vec_IntSize(vOuts) );
-        p->nSubgrTotal = 0;
-        for ( i = 0; i < 222; i++ )
-        {
-            p->pPrios[i] = p->pPriosMem + p->nSubgrTotal;
-            p->nSubgrTotal += p->nSubgr[i];
-            for ( k = 0; k < p->nSubgr[i]; k++ )
-                p->pPrios[i][k] = k;
-
-        }
-        assert( p->nSubgrTotal == Vec_IntSize(vOuts) );
-
-        // allocate memory for the priority of roots of each class
-        p->pPlaceMem = ALLOC( int, Vec_IntSize(vOuts) );
-        p->nSubgrTotal = 0;
-        for ( i = 0; i < 222; i++ )
-        {
-            p->pPlace[i] = p->pPlaceMem + p->nSubgrTotal;
-            p->nSubgrTotal += p->nSubgr[i];
-            for ( k = 0; k < p->nSubgr[i]; k++ )
-                p->pPlace[i][k] = k;
-
-        }
-        assert( p->nSubgrTotal == Vec_IntSize(vOuts) );
-
-        // allocate memory for the priority of roots of each class
-        p->pScoreMem = ALLOC( int, Vec_IntSize(vOuts) );
-        p->nSubgrTotal = 0;
-        for ( i = 0; i < 222; i++ )
-        {
-            p->pScore[i] = p->pScoreMem + p->nSubgrTotal;
-            p->nSubgrTotal += p->nSubgr[i];
-            for ( k = 0; k < p->nSubgr[i]; k++ )
-                p->pScore[i][k] = 0;
-
-        }
-        assert( p->nSubgrTotal == Vec_IntSize(vOuts) );
-    }
-    else
-    {
-        int Counter = 0;
-        // allocate memory for the priority of roots of each class
-        p->pPriosMem = ALLOC( int, Vec_IntSize(vOuts) );
-        p->nSubgrTotal = 0;
-        for ( i = 0; i < 222; i++ )
-        {
-            p->pPrios[i] = p->pPriosMem + p->nSubgrTotal;
-            p->nSubgrTotal += p->nSubgr[i];
-            for ( k = 0; k < p->nSubgr[i]; k++ )
-                p->pPrios[i][k] = Vec_IntEntry(vPrios, Counter++);
-
-        }
-        assert( p->nSubgrTotal == Vec_IntSize(vOuts) );
-        assert( Counter == Vec_IntSize(vPrios) );
-    }
-
-    // create traversal IDs
-    for ( i = 0; i < p->iObj; i++ )
-        Dar_LibObj(p, i)->Num = 0xff;
-    // count nodes in each class
-    for ( i = 0; i < 222; i++ )
-        for ( k = 0; k < p->nSubgr[i]; k++ )
-            Dar_LibSetup_rec( p, Dar_LibObj(p, p->pSubgr[i][k]), i, 0 );
-    // count the total number of nodes
-    p->nNodesTotal = 0;
-    for ( i = 0; i < 222; i++ )
-        p->nNodesTotal += p->nNodes[i];
-    // allocate memory for the nodes of each class
-    p->pNodesMem = ALLOC( int, p->nNodesTotal );
-    p->pNodes0Mem = ALLOC( int, p->nNodesTotal );
-    p->nNodesTotal = 0;
-    for ( i = 0; i < 222; i++ )
-    {
-        p->pNodes[i] = p->pNodesMem + p->nNodesTotal;
-        p->pNodes0[i] = p->pNodes0Mem + p->nNodesTotal;
-        p->nNodesTotal += p->nNodes[i];
-        p->nNodes[i] = 0;
-    }
-    // create traversal IDs
-    for ( i = 0; i < p->iObj; i++ )
-        Dar_LibObj(p, i)->Num = 0xff;
-    // add the nodes to storage
-    nNodesTotal = 0;
-    for ( i = 0; i < 222; i++ )
-    {
-         for ( k = 0; k < p->nSubgr[i]; k++ )
-            Dar_LibSetup_rec( p, Dar_LibObj(p, p->pSubgr[i][k]), i, 1 );
-         nNodesTotal += p->nNodes[i];
-//printf( "Class %3d : Subgraphs = %4d. Nodes = %5d.\n", i, p->nSubgr[i], p->nNodes[i] );
-    }
-    assert( nNodesTotal == p->nNodesTotal );
-     // prepare the number of the PI nodes
-    for ( i = 0; i < 4; i++ )
-        Dar_LibObj(p, i)->Num = i;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibCreateData( Dar_Lib_t * p, int nDatas )
-{
-    if ( p->nDatas == nDatas )
-        return;
-    FREE( p->pDatas );
-    // allocate datas
-    p->nDatas = nDatas;
-    p->pDatas = ALLOC( Dar_LibDat_t, nDatas );
-    memset( p->pDatas, 0, sizeof(Dar_LibDat_t) * nDatas );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one AND to the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibSetup0_rec( Dar_Lib_t * p, Dar_LibObj_t * pObj, int Class, int fCollect )
-{
-    if ( pObj->fTerm || (int)pObj->Num == Class )
-        return;
-    pObj->Num = Class;
-    Dar_LibSetup0_rec( p, Dar_LibObj(p, pObj->Fan0), Class, fCollect );
-    Dar_LibSetup0_rec( p, Dar_LibObj(p, pObj->Fan1), Class, fCollect );
-    if ( fCollect )
-        p->pNodes0[Class][ p->nNodes0[Class]++ ] = pObj-p->pObjs;
-    else
-        p->nNodes0[Class]++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibPrepare( int nSubgraphs )
-{
-    Dar_Lib_t * p = s_DarLib;
-    int i, k, nNodes0Total;
-    if ( p->nSubgraphs == nSubgraphs )
-        return;
-
-    // favor special classes:
-    //  1 : F = (!d*!c*!b*!a)
-    //  4 : F = (!d*!c*!(b*a))
-    // 12 : F = (!d*!(c*!(!b*!a)))
-    // 20 : F = (!d*!(c*b*a))
-
-    // set the subgraph counters 
-    p->nSubgr0Total = 0;
-    for ( i = 0; i < 222; i++ )
-    {
-//        if ( i == 1 || i == 4 || i == 12 || i == 20 ) // special classes 
-        if ( i == 1 ) // special classes 
-            p->nSubgr0[i] = p->nSubgr[i];
-        else
-            p->nSubgr0[i] = AIG_MIN( p->nSubgr[i], nSubgraphs );
-        p->nSubgr0Total += p->nSubgr0[i];
-        for ( k = 0; k < p->nSubgr0[i]; k++ )
-            p->pSubgr0[i][k] = p->pSubgr[i][ p->pPrios[i][k] ];
-    }
-
-    // count the number of nodes
-    // clean node counters
-    for ( i = 0; i < 222; i++ )
-        p->nNodes0[i] = 0;
-    // create traversal IDs
-    for ( i = 0; i < p->iObj; i++ )
-        Dar_LibObj(p, i)->Num = 0xff;
-    // count nodes in each class
-    // count the total number of nodes and the largest class
-    p->nNodes0Total = 0;
-    p->nNodes0Max = 0;
-    for ( i = 0; i < 222; i++ )
-    {
-        for ( k = 0; k < p->nSubgr0[i]; k++ )
-            Dar_LibSetup0_rec( p, Dar_LibObj(p, p->pSubgr0[i][k]), i, 0 );
-        p->nNodes0Total += p->nNodes0[i];
-        p->nNodes0Max = AIG_MAX( p->nNodes0Max, p->nNodes0[i] );
-    }
-
-    // clean node counters
-    for ( i = 0; i < 222; i++ )
-        p->nNodes0[i] = 0;
-    // create traversal IDs
-    for ( i = 0; i < p->iObj; i++ )
-        Dar_LibObj(p, i)->Num = 0xff;
-    // add the nodes to storage
-    nNodes0Total = 0;
-    for ( i = 0; i < 222; i++ )
-    {
-        for ( k = 0; k < p->nSubgr0[i]; k++ )
-            Dar_LibSetup0_rec( p, Dar_LibObj(p, p->pSubgr0[i][k]), i, 1 );
-         nNodes0Total += p->nNodes0[i];
-    }
-    assert( nNodes0Total == p->nNodes0Total );
-     // prepare the number of the PI nodes
-    for ( i = 0; i < 4; i++ )
-        Dar_LibObj(p, i)->Num = i;
-
-    // realloc the datas
-    Dar_LibCreateData( p, p->nNodes0Max + 32 ); 
-    // allocated more because Dar_LibBuildBest() sometimes requires more entries
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reads library from array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dar_Lib_t * Dar_LibRead()
-{
-    Vec_Int_t * vObjs, * vOuts, * vPrios;
-    Dar_Lib_t * p;
-    int i;
-    // read nodes and outputs
-    vObjs  = Dar_LibReadNodes();
-    vOuts  = Dar_LibReadOuts();
-    vPrios = Dar_LibReadPrios();
-    // create library
-    p = Dar_LibAlloc( Vec_IntSize(vObjs)/2 + 4 );
-    // create nodes
-    for ( i = 0; i < vObjs->nSize; i += 2 )
-        Dar_LibAddNode( p, vObjs->pArray[i] >> 1, vObjs->pArray[i+1] >> 1,
-            vObjs->pArray[i] & 1, vObjs->pArray[i+1] & 1 );
-    // create outputs
-    Dar_LibSetup( p, vOuts, vPrios );
-    Vec_IntFree( vObjs );
-    Vec_IntFree( vOuts );
-    Vec_IntFree( vPrios );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibStart()
-{
-    int clk = clock();
-    assert( s_DarLib == NULL );
-    s_DarLib = Dar_LibRead();
-//    printf( "The 4-input library started with %d nodes and %d subgraphs. ", s_DarLib->nObjs - 4, s_DarLib->nSubgrTotal );
-//    PRT( "Time", clock() - clk );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the library.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibStop()
-{
-    assert( s_DarLib != NULL );
-    Dar_LibFree( s_DarLib );
-    s_DarLib = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the score of the class and adjusts the priority of this class.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibIncrementScore( int Class, int Out, int Gain )
-{
-    int * pPrios = s_DarLib->pPrios[Class];  // pPrios[i] = Out
-    int * pPlace = s_DarLib->pPlace[Class];  // pPlace[Out] = i
-    int * pScore = s_DarLib->pScore[Class];  // score of Out
-    int Out2;
-    assert( Class >= 0 && Class < 222 );
-    assert( Out >= 0 && Out < s_DarLib->nSubgr[Class] );
-    assert( pPlace[pPrios[Out]] == Out );
-    // increment the score
-    pScore[Out] += Gain;
-    // move the out in the order 
-    while ( pPlace[Out] > 0 && pScore[Out] > pScore[ pPrios[pPlace[Out]-1] ] )
-    {
-        // get the previous output in the priority list
-        Out2 = pPrios[pPlace[Out]-1];
-        // swap Out and Out2
-        pPlace[Out]--;
-        pPlace[Out2]++;
-        pPrios[pPlace[Out]] = Out;
-        pPrios[pPlace[Out2]] = Out2;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints out the priorities into the file.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibDumpPriorities()
-{
-    int i, k, Out, Out2, Counter = 0, Printed = 0;
-    printf( "\nOutput priorities (total = %d):\n", s_DarLib->nSubgrTotal );
-    for ( i = 0; i < 222; i++ )
-    {
-//        printf( "Class%d: ", i );
-        for ( k = 0; k < s_DarLib->nSubgr[i]; k++ )
-        {
-            Out = s_DarLib->pPrios[i][k];
-            Out2 = k == 0 ? Out : s_DarLib->pPrios[i][k-1];
-            assert( s_DarLib->pScore[i][Out2] >= s_DarLib->pScore[i][Out] );
-//            printf( "%d(%d), ", Out, s_DarLib->pScore[i][Out] );
-            printf( "%d, ", Out );
-            Printed++;
-            if ( ++Counter == 15 )
-            {
-                printf( "\n" );
-                Counter = 0;
-            }
-        }
-    }
-    printf( "\n" );
-    assert( Printed == s_DarLib->nSubgrTotal );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Matches the cut with its canonical form.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_LibCutMatch( Dar_Man_t * p, Dar_Cut_t * pCut )
-{
-    Aig_Obj_t * pFanin;
-    unsigned uPhase;
-    char * pPerm;
-    int i;
-    assert( pCut->nLeaves == 4 );
-    // get the fanin permutation
-    uPhase = s_DarLib->pPhases[pCut->uTruth];
-    pPerm = s_DarLib->pPerms4[ s_DarLib->pPerms[pCut->uTruth] ];
-    // collect fanins with the corresponding permutation/phase
-    for ( i = 0; i < (int)pCut->nLeaves; i++ )
-    {
-        pFanin = Aig_ManObj( p->pAig, pCut->pLeaves[pPerm[i]] );
-        if ( pFanin == NULL )
-        {
-            p->nCutsBad++;
-            return 0;
-        }
-        pFanin = Aig_NotCond(pFanin, ((uPhase >> i) & 1) );
-        s_DarLib->pDatas[i].pFunc = pFanin;
-        s_DarLib->pDatas[i].Level = Aig_Regular(pFanin)->Level;
-    }
-    p->nCutsGood++;
-    return 1;
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Marks the MFFC of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_LibCutMarkMffc( Aig_Man_t * p, Aig_Obj_t * pRoot, int nLeaves )
-{
-    int i, nNodes;
-    // mark the cut leaves
-    for ( i = 0; i < nLeaves; i++ )
-        Aig_Regular(s_DarLib->pDatas[i].pFunc)->nRefs++;
-    // label MFFC with current ID
-    nNodes = Aig_NodeMffsLabel( p, pRoot );
-    // unmark the cut leaves
-    for ( i = 0; i < nLeaves; i++ )
-        Aig_Regular(s_DarLib->pDatas[i].pFunc)->nRefs--;
-    return nNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Evaluates one cut.]
-
-  Description [Returns the best gain.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibObjPrint_rec( Dar_LibObj_t * pObj )
-{
-    if ( pObj->fTerm )
-    {
-        printf( "%c", 'a' + pObj - s_DarLib->pObjs );
-        return;
-    }
-    printf( "(" );
-    Dar_LibObjPrint_rec( Dar_LibObj(s_DarLib, pObj->Fan0) );
-    if ( pObj->fCompl0 )
-        printf( "\'" );
-    Dar_LibObjPrint_rec( Dar_LibObj(s_DarLib, pObj->Fan1) );
-    if ( pObj->fCompl0 )
-        printf( "\'" );
-    printf( ")" );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Assigns numbers to the nodes of one class.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibEvalAssignNums( Dar_Man_t * p, int Class )
-{
-    Dar_LibObj_t * pObj;
-    Dar_LibDat_t * pData, * pData0, * pData1;
-    Aig_Obj_t * pFanin0, * pFanin1;
-    int i;
-    for ( i = 0; i < s_DarLib->nNodes0[Class]; i++ )
-    {
-        // get one class node, assign its temporary number and set its data
-        pObj = Dar_LibObj(s_DarLib, s_DarLib->pNodes0[Class][i]);
-        pObj->Num = 4 + i;
-        assert( (int)pObj->Num < s_DarLib->nNodes0Max + 4 );
-        pData = s_DarLib->pDatas + pObj->Num;
-        pData->fMffc = 0;
-        pData->pFunc = NULL;
-        pData->TravId = 0xFFFF;
-
-        // explore the fanins
-        assert( (int)Dar_LibObj(s_DarLib, pObj->Fan0)->Num < s_DarLib->nNodes0Max + 4 );
-        assert( (int)Dar_LibObj(s_DarLib, pObj->Fan1)->Num < s_DarLib->nNodes0Max + 4 );
-        pData0 = s_DarLib->pDatas + Dar_LibObj(s_DarLib, pObj->Fan0)->Num;
-        pData1 = s_DarLib->pDatas + Dar_LibObj(s_DarLib, pObj->Fan1)->Num;
-        pData->Level = 1 + AIG_MAX(pData0->Level, pData1->Level);
-        if ( pData0->pFunc == NULL || pData1->pFunc == NULL )
-            continue;
-        pFanin0 = Aig_NotCond( pData0->pFunc, pObj->fCompl0 );
-        pFanin1 = Aig_NotCond( pData1->pFunc, pObj->fCompl1 );
-        pData->pFunc = Aig_TableLookupTwo( p->pAig, pFanin0, pFanin1 );
-        if ( pData->pFunc )
-        {
-            // update the level to be more accurate
-            pData->Level = Aig_Regular(pData->pFunc)->Level;
-            // mark the node if it is part of MFFC
-            pData->fMffc = Aig_ObjIsTravIdCurrent(p->pAig, pData->pFunc);
-        }
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Evaluates one cut.]
-
-  Description [Returns the best gain.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_LibEval_rec( Dar_LibObj_t * pObj, int Out, int nNodesSaved, int Required )
-{
-    Dar_LibDat_t * pData;
-    int Area;
-    if ( pObj->fTerm )
-        return 0;
-    assert( pObj->Num > 3 );
-    pData = s_DarLib->pDatas + pObj->Num;
-    if ( pData->Level > Required )
-        return 0xff;
-    if ( pData->pFunc && !pData->fMffc )
-        return 0;
-    if ( pData->TravId == Out )
-        return 0;
-    pData->TravId = Out;
-    // this is a new node - get a bound on the area of its branches
-    nNodesSaved--;
-    Area = Dar_LibEval_rec( Dar_LibObj(s_DarLib, pObj->Fan0), Out, nNodesSaved, Required+1 );
-    if ( Area > nNodesSaved )
-        return 0xff;
-    Area += Dar_LibEval_rec( Dar_LibObj(s_DarLib, pObj->Fan1), Out, nNodesSaved, Required+1 );
-    if ( Area > nNodesSaved )
-        return 0xff;
-    return Area + 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Evaluates one cut.]
-
-  Description [Returns the best gain.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibEval( Dar_Man_t * p, Aig_Obj_t * pRoot, Dar_Cut_t * pCut, int Required )
-{
-    int fTraining = 0;
-    Dar_LibObj_t * pObj;
-    int Out, k, Class, nNodesSaved, nNodesAdded, nNodesGained, clk;
-    clk = clock();
-    if ( pCut->nLeaves != 4 )
-        return;
-    // check if the cut exits and assigns leaves and their levels
-    if ( !Dar_LibCutMatch(p, pCut) )
-        return;
-    // mark MFFC of the node
-    nNodesSaved = Dar_LibCutMarkMffc( p->pAig, pRoot, pCut->nLeaves );
-    // evaluate the cut
-    Class = s_DarLib->pMap[pCut->uTruth];
-    Dar_LibEvalAssignNums( p, Class );
-    // profile outputs by their savings
-    p->nTotalSubgs += s_DarLib->nSubgr0[Class];
-    p->ClassSubgs[Class] += s_DarLib->nSubgr0[Class];
-    for ( Out = 0; Out < s_DarLib->nSubgr0[Class]; Out++ )
-    {
-        pObj = Dar_LibObj(s_DarLib, s_DarLib->pSubgr0[Class][Out]);
-        if ( Aig_Regular(s_DarLib->pDatas[pObj->Num].pFunc) == pRoot )
-            continue;
-        nNodesAdded = Dar_LibEval_rec( pObj, Out, nNodesSaved - !p->pPars->fUseZeros, Required );
-        nNodesGained = nNodesSaved - nNodesAdded;
-        if ( fTraining && nNodesGained >= 0 )
-            Dar_LibIncrementScore( Class, Out, nNodesGained + 1 );
-        if ( nNodesGained < 0 || (nNodesGained == 0 && !p->pPars->fUseZeros) )
-            continue;
-        if ( nNodesGained <  p->GainBest || 
-            (nNodesGained == p->GainBest && s_DarLib->pDatas[pObj->Num].Level >= p->LevelBest) )
-            continue;
-        // remember this possibility
-        Vec_PtrClear( p->vLeavesBest );
-        for ( k = 0; k < (int)pCut->nLeaves; k++ )
-            Vec_PtrPush( p->vLeavesBest, s_DarLib->pDatas[k].pFunc );
-        p->OutBest    = s_DarLib->pSubgr0[Class][Out];
-        p->OutNumBest = Out;
-        p->LevelBest  = s_DarLib->pDatas[pObj->Num].Level;
-        p->GainBest   = nNodesGained;
-        p->ClassBest  = Class;
-        assert( p->LevelBest <= Required );
-    }
-clk = clock() - clk;
-p->ClassTimes[Class] += clk;
-p->timeEval += clk;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Clears the fields of the nodes used in this cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_LibBuildClear_rec( Dar_LibObj_t * pObj, int * pCounter )
-{
-    if ( pObj->fTerm )
-        return;
-    pObj->Num = (*pCounter)++;
-    s_DarLib->pDatas[ pObj->Num ].pFunc = NULL;
-    Dar_LibBuildClear_rec( Dar_LibObj(s_DarLib, pObj->Fan0), pCounter );
-    Dar_LibBuildClear_rec( Dar_LibObj(s_DarLib, pObj->Fan1), pCounter );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reconstructs the best cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Dar_LibBuildBest_rec( Dar_Man_t * p, Dar_LibObj_t * pObj )
-{
-    Aig_Obj_t * pFanin0, * pFanin1;
-    Dar_LibDat_t * pData = s_DarLib->pDatas + pObj->Num;
-    if ( pData->pFunc )
-        return pData->pFunc;
-    pFanin0 = Dar_LibBuildBest_rec( p, Dar_LibObj(s_DarLib, pObj->Fan0) );
-    pFanin1 = Dar_LibBuildBest_rec( p, Dar_LibObj(s_DarLib, pObj->Fan1) );
-    pFanin0 = Aig_NotCond( pFanin0, pObj->fCompl0 );
-    pFanin1 = Aig_NotCond( pFanin1, pObj->fCompl1 );
-    pData->pFunc = Aig_And( p->pAig, pFanin0, pFanin1 );
-//    assert( pData->Level == (int)Aig_Regular(pData->pFunc)->Level );
-    return pData->pFunc;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reconstructs the best cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Dar_LibBuildBest( Dar_Man_t * p )
-{
-    int i, Counter = 4;
-    for ( i = 0; i < Vec_PtrSize(p->vLeavesBest); i++ )
-        s_DarLib->pDatas[i].pFunc = Vec_PtrEntry( p->vLeavesBest, i );
-    Dar_LibBuildClear_rec( Dar_LibObj(s_DarLib, p->OutBest), &Counter );
-    return Dar_LibBuildBest_rec( p, Dar_LibObj(s_DarLib, p->OutBest) );
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darMan.c b/src/aig/dar/darMan.c
deleted file mode 100644
index 155d48bd..00000000
--- a/src/aig/dar/darMan.c
+++ /dev/null
@@ -1,132 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darMan.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [AIG manager.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darMan.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the rewriting manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dar_Man_t * Dar_ManStart( Aig_Man_t * pAig, Dar_RwrPar_t * pPars )
-{
-    Dar_Man_t * p;
-    // start the manager
-    p = ALLOC( Dar_Man_t, 1 );
-    memset( p, 0, sizeof(Dar_Man_t) );
-    p->pPars = pPars;
-    p->pAig  = pAig;
-    // prepare the internal memory manager
-    p->pMemCuts = Aig_MmFixedStart( p->pPars->nCutsMax * sizeof(Dar_Cut_t), 1024 );
-    // other data
-    p->vLeavesBest = Vec_PtrAlloc( 4 );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the rewriting manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_ManStop( Dar_Man_t * p )
-{
-    if ( p->pPars->fVerbose )
-        Dar_ManPrintStats( p );
-    if ( p->pMemCuts )
-        Aig_MmFixedStop( p->pMemCuts, 0 );
-    if ( p->vLeavesBest ) 
-        Vec_PtrFree( p->vLeavesBest );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_ManPrintStats( Dar_Man_t * p )
-{
-    unsigned pCanons[222];
-    int Gain, i;
-    extern void Kit_DsdPrintFromTruth( unsigned * pTruth, int nVars );
-
-    Gain = p->nNodesInit - Aig_ManNodeNum(p->pAig);
-    printf( "Tried = %8d. Beg = %8d. End = %8d. Gain = %6d. (%6.2f %%).  Cut mem = %d Mb\n", 
-        p->nNodesTried, p->nNodesInit, Aig_ManNodeNum(p->pAig), Gain, 100.0*Gain/p->nNodesInit, p->nCutMemUsed );
-    printf( "Cuts = %8d. Tried = %8d. Used = %8d. Bad = %5d. Skipped = %5d. Ave = %.2f.\n", 
-        p->nCutsAll, p->nCutsTried, p->nCutsUsed, p->nCutsBad, p->nCutsSkipped,
-        (float)p->nCutsUsed/Aig_ManNodeNum(p->pAig) );
-
-    printf( "Bufs = %5d. BufMax = %5d. BufReplace = %6d. BufFix = %6d.  Levels = %4d.\n", 
-        Aig_ManBufNum(p->pAig), p->pAig->nBufMax, p->pAig->nBufReplaces, p->pAig->nBufFixes, Aig_ManLevels(p->pAig) );
-    PRT( "Cuts  ", p->timeCuts );
-    PRT( "Eval  ", p->timeEval );
-    PRT( "Other ", p->timeOther );
-    PRT( "TOTAL ", p->timeTotal );
-
-    if ( !p->pPars->fVeryVerbose )
-        return;
-    Dar_LibReturnCanonicals( pCanons );
-    for ( i = 0; i < 222; i++ )
-    {
-        if ( p->ClassGains[i] == 0 && p->ClassTimes[i] == 0 )
-            continue;
-        printf( "%3d : ", i );
-        printf( "G = %6d (%5.2f %%)  ", p->ClassGains[i], Gain? 100.0*p->ClassGains[i]/Gain : 0.0 );
-        printf( "S = %8d (%5.2f %%)  ", p->ClassSubgs[i], p->nTotalSubgs? 100.0*p->ClassSubgs[i]/p->nTotalSubgs : 0.0 );
-        printf( "R = %7d   ", p->ClassGains[i]? p->ClassSubgs[i]/p->ClassGains[i] : 9999999 );
-        Kit_DsdPrintFromTruth( pCanons + i, 4 );
-//        PRTP( "T", p->ClassTimes[i], p->timeEval );
-    }
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darPrec.c b/src/aig/dar/darPrec.c
deleted file mode 100644
index c3e62389..00000000
--- a/src/aig/dar/darPrec.c
+++ /dev/null
@@ -1,388 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darPrec.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Truth table precomputation.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darPrec.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-
-/**Function*************************************************************
-
-  Synopsis    [Allocated one-memory-chunk array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void ** Dar_ArrayAlloc( int nCols, int nRows, int Size )
-{
-    char ** pRes;
-    char * pBuffer;
-    int i;
-    assert( nCols > 0 && nRows > 0 && Size > 0 );
-    pBuffer = ALLOC( char, nCols * (sizeof(void *) + nRows * Size) );
-    pRes = (char **)pBuffer;
-    pRes[0] = pBuffer + nCols * sizeof(void *);
-    for ( i = 1; i < nCols; i++ )
-        pRes[i] = pRes[0] + i * nRows * Size;
-    return pRes;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Computes the factorial.]
-
-  Description []
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-int Dar_Factorial( int n )
-{
-    int i, Res = 1;
-    for ( i = 1; i <= n; i++ )
-        Res *= i;
-    return Res;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Fills in the array of permutations.]
-
-  Description []
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Dar_Permutations_rec( char ** pRes, int nFact, int n, char Array[] )
-{
-    char ** pNext;
-    int nFactNext;
-    int iTemp, iCur, iLast, k;
-
-    if ( n == 1 )
-    {
-        pRes[0][0] = Array[0];
-        return;
-    }
-
-    // get the next factorial
-    nFactNext = nFact / n;
-    // get the last entry
-    iLast = n - 1;
-
-    for ( iCur = 0; iCur < n; iCur++ )
-    {
-        // swap Cur and Last
-        iTemp        = Array[iCur];
-        Array[iCur]  = Array[iLast];
-        Array[iLast] = iTemp;
-
-        // get the pointer to the current section
-        pNext = pRes + (n - 1 - iCur) * nFactNext;
-
-        // set the last entry 
-        for ( k = 0; k < nFactNext; k++ )
-            pNext[k][iLast] = Array[iLast];
-
-        // call recursively for this part
-        Dar_Permutations_rec( pNext, nFactNext, n - 1, Array );
-
-        // swap them back
-        iTemp        = Array[iCur];
-        Array[iCur]  = Array[iLast];
-        Array[iLast] = iTemp;
-    }
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Computes the set of all permutations.]
-
-  Description [The number of permutations in the array is n!. The number of
-  entries in each permutation is n. Therefore, the resulting array is a 
-  two-dimentional array of the size: n! x n. To free the resulting array,
-  call free() on the pointer returned by this procedure.]
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-char ** Dar_Permutations( int n )
-{
-    char Array[50];
-    char ** pRes;
-    int nFact, i;
-    // allocate memory
-    nFact = Dar_Factorial( n );
-    pRes  = (char **)Dar_ArrayAlloc( nFact, n, sizeof(char) );
-    // fill in the permutations
-    for ( i = 0; i < n; i++ )
-        Array[i] = i;
-    Dar_Permutations_rec( pRes, nFact, n, Array );
-    // print the permutations
-/*
-    {
-    int i, k;
-    for ( i = 0; i < nFact; i++ )
-    {
-        printf( "{" );
-        for ( k = 0; k < n; k++ )
-            printf( " %d", pRes[i][k] );
-        printf( " }\n" );
-    }
-    }
-*/
-    return pRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Permutes the given vector of minterms.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_TruthPermute_int( int * pMints, int nMints, char * pPerm, int nVars, int * pMintsP )
-{
-    int m, v;
-    // clean the storage for minterms
-    memset( pMintsP, 0, sizeof(int) * nMints );
-    // go through minterms and add the variables
-    for ( m = 0; m < nMints; m++ )
-        for ( v = 0; v < nVars; v++ )
-            if ( pMints[m] & (1 << v) )
-                pMintsP[m] |= (1 << pPerm[v]);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Permutes the function.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Dar_TruthPermute( unsigned Truth, char * pPerms, int nVars, int fReverse )
-{
-    unsigned Result;
-    int * pMints;
-    int * pMintsP;
-    int nMints;
-    int i, m;
-
-    assert( nVars < 6 );
-    nMints  = (1 << nVars);
-    pMints  = ALLOC( int, nMints );
-    pMintsP = ALLOC( int, nMints );
-    for ( i = 0; i < nMints; i++ )
-        pMints[i] = i;
-
-    Dar_TruthPermute_int( pMints, nMints, pPerms, nVars, pMintsP );
-
-    Result = 0;
-    if ( fReverse )
-    {
-        for ( m = 0; m < nMints; m++ )
-            if ( Truth & (1 << pMintsP[m]) )
-                Result |= (1 << m);
-    }
-    else
-    {
-        for ( m = 0; m < nMints; m++ )
-            if ( Truth & (1 << m) )
-                Result |= (1 << pMintsP[m]);
-    }
-
-    free( pMints );
-    free( pMintsP );
-
-    return Result;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Changes the phase of the function.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Dar_TruthPolarize( unsigned uTruth, int Polarity, int nVars )
-{
-    // elementary truth tables
-    static unsigned Signs[5] = {
-        0xAAAAAAAA,    // 1010 1010 1010 1010 1010 1010 1010 1010
-        0xCCCCCCCC,    // 1010 1010 1010 1010 1010 1010 1010 1010
-        0xF0F0F0F0,    // 1111 0000 1111 0000 1111 0000 1111 0000
-        0xFF00FF00,    // 1111 1111 0000 0000 1111 1111 0000 0000
-        0xFFFF0000     // 1111 1111 1111 1111 0000 0000 0000 0000
-    };
-    unsigned uTruthRes, uCof0, uCof1;
-    int nMints, Shift, v;
-    assert( nVars < 6 );
-    nMints = (1 << nVars);
-    uTruthRes = uTruth;
-    for ( v = 0; v < nVars; v++ )
-        if ( Polarity & (1 << v) )
-        {
-            uCof0  = uTruth & ~Signs[v];
-            uCof1  = uTruth &  Signs[v];
-            Shift  = (1 << v);
-            uCof0 <<= Shift;
-            uCof1 >>= Shift;
-            uTruth = uCof0 | uCof1;
-        }
-    return uTruth;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes NPN canonical forms for 4-variable functions.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_Truth4VarNPN( unsigned short ** puCanons, char ** puPhases, char ** puPerms, unsigned char ** puMap )
-{
-    unsigned short * uCanons;
-    unsigned char * uMap;
-    unsigned uTruth, uPhase, uPerm;
-    char ** pPerms4, * uPhases, * uPerms;
-    int nFuncs, nClasses;
-    int i, k;
-
-    nFuncs  = (1 << 16);
-    uCanons = ALLOC( unsigned short, nFuncs );
-    uPhases = ALLOC( char, nFuncs );
-    uPerms  = ALLOC( char, nFuncs );
-    uMap    = ALLOC( unsigned char, nFuncs );
-    memset( uCanons, 0, sizeof(unsigned short) * nFuncs );
-    memset( uPhases, 0, sizeof(char) * nFuncs );
-    memset( uPerms,  0, sizeof(char) * nFuncs );
-    memset( uMap,    0, sizeof(unsigned char) * nFuncs );
-    pPerms4 = Dar_Permutations( 4 );
-
-    nClasses = 1;
-    nFuncs = (1 << 15);
-    for ( uTruth = 1; uTruth < (unsigned)nFuncs; uTruth++ )
-    {
-        // skip already assigned
-        if ( uCanons[uTruth] )
-        {
-            assert( uTruth > uCanons[uTruth] );
-            uMap[~uTruth & 0xFFFF] = uMap[uTruth] = uMap[uCanons[uTruth]];
-            continue;
-        }
-        uMap[uTruth] = nClasses++;
-        for ( i = 0; i < 16; i++ )
-        {
-            uPhase = Dar_TruthPolarize( uTruth, i, 4 );
-            for ( k = 0; k < 24; k++ )
-            {
-                uPerm = Dar_TruthPermute( uPhase, pPerms4[k], 4, 0 );
-                if ( uCanons[uPerm] == 0 )
-                {
-                    uCanons[uPerm] = uTruth;
-                    uPhases[uPerm] = i;
-                    uPerms[uPerm]  = k;
-
-                    uPerm = ~uPerm & 0xFFFF;
-                    uCanons[uPerm] = uTruth;
-                    uPhases[uPerm] = i | 16;
-                    uPerms[uPerm]  = k;
-                }
-                else
-                    assert( uCanons[uPerm] == uTruth );
-            }
-            uPhase = Dar_TruthPolarize( ~uTruth & 0xFFFF, i, 4 ); 
-            for ( k = 0; k < 24; k++ )
-            {
-                uPerm = Dar_TruthPermute( uPhase, pPerms4[k], 4, 0 );
-                if ( uCanons[uPerm] == 0 )
-                {
-                    uCanons[uPerm] = uTruth;
-                    uPhases[uPerm] = i;
-                    uPerms[uPerm]  = k;
-
-                    uPerm = ~uPerm & 0xFFFF;
-                    uCanons[uPerm] = uTruth;
-                    uPhases[uPerm] = i | 16;
-                    uPerms[uPerm]  = k;
-                }
-                else
-                    assert( uCanons[uPerm] == uTruth );
-            }
-        }
-    }
-    uPhases[(1<<16)-1] = 16;
-    assert( nClasses == 222 );
-    free( pPerms4 );
-    if ( puCanons ) 
-        *puCanons = uCanons;
-    else
-        free( uCanons );
-    if ( puPhases ) 
-        *puPhases = uPhases;
-    else
-        free( uPhases );
-    if ( puPerms ) 
-        *puPerms = uPerms;
-    else
-        free( uPerms );
-    if ( puMap ) 
-        *puMap = uMap;
-    else
-        free( uMap );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darRefact.c b/src/aig/dar/darRefact.c
deleted file mode 100644
index 142c7721..00000000
--- a/src/aig/dar/darRefact.c
+++ /dev/null
@@ -1,591 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darRefact.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Refactoring.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darRefact.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// the refactoring manager
-typedef struct Ref_Man_t_            Ref_Man_t;
-struct Ref_Man_t_
-{
-    // input data
-    Dar_RefPar_t *   pPars;          // rewriting parameters
-    Aig_Man_t *      pAig;           // AIG manager 
-    // computed cuts
-    Vec_Vec_t *      vCuts;          // the storage for cuts
-    // truth table and ISOP
-    Vec_Ptr_t *      vTruthElem;     // elementary truth tables
-    Vec_Ptr_t *      vTruthStore;    // storage for truth tables
-    Vec_Int_t *      vMemory;        // storage for ISOP
-    Vec_Ptr_t *      vCutNodes;      // storage for internal nodes of the cut
-    // various data members
-    Vec_Ptr_t *      vLeavesBest;    // the best set of leaves
-    Kit_Graph_t *    pGraphBest;     // the best factored form
-    int              GainBest;       // the best gain
-    int              LevelBest;      // the level of node with the best gain
-    // node statistics
-    int              nNodesInit;     // the initial number of nodes
-    int              nNodesTried;    // the number of nodes tried
-    int              nNodesBelow;    // the number of nodes below the level limit
-    int              nNodesExten;    // the number of nodes with extended cut
-    int              nCutsUsed;      // the number of rewriting steps
-    int              nCutsTried;     // the number of cuts tries
-    // timing statistics
-    int              timeCuts;
-    int              timeEval;
-    int              timeOther;
-    int              timeTotal;
-};
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the structure with default assignment of parameters.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_ManDefaultRefParams( Dar_RefPar_t * pPars )
-{
-    memset( pPars, 0, sizeof(Dar_RefPar_t) );
-    pPars->nMffcMin     =  2;  // the min MFFC size for which refactoring is used
-    pPars->nLeafMax     = 12;  // the max number of leaves of a cut
-    pPars->nCutsMax     =  5;  // the max number of cuts to consider  
-    pPars->fUpdateLevel =  0;
-    pPars->fUseZeros    =  0;
-    pPars->fVerbose     =  0;
-    pPars->fVeryVerbose =  0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the rewriting manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ref_Man_t * Dar_ManRefStart( Aig_Man_t * pAig, Dar_RefPar_t * pPars )
-{
-    Ref_Man_t * p;
-    // start the manager
-    p = ALLOC( Ref_Man_t, 1 );
-    memset( p, 0, sizeof(Ref_Man_t) );
-    p->pAig         = pAig;
-    p->pPars        = pPars;
-    // other data
-    p->vCuts        = Vec_VecStart( pPars->nCutsMax );
-    p->vTruthElem   = Vec_PtrAllocTruthTables( pPars->nLeafMax );
-    p->vTruthStore  = Vec_PtrAllocSimInfo( 256, Kit_TruthWordNum(pPars->nLeafMax) );
-    p->vMemory      = Vec_IntAlloc( 1 << 16 );
-    p->vCutNodes    = Vec_PtrAlloc( 256 );
-    p->vLeavesBest  = Vec_PtrAlloc( pPars->nLeafMax );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints out the statistics of the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_ManRefPrintStats( Ref_Man_t * p )
-{
-    int Gain = p->nNodesInit - Aig_ManNodeNum(p->pAig);
-    printf( "NodesBeg = %8d. NodesEnd = %8d. Gain = %6d. (%6.2f %%).\n", 
-        p->nNodesInit, Aig_ManNodeNum(p->pAig), Gain, 100.0*Gain/p->nNodesInit );
-    printf( "Tried = %6d. Below = %5d. Extended = %5d.  Used = %5d.  Levels = %4d.\n", 
-        p->nNodesTried, p->nNodesBelow, p->nNodesExten, p->nCutsUsed, Aig_ManLevels(p->pAig) );
-    PRT( "Cuts  ", p->timeCuts );
-    PRT( "Eval  ", p->timeEval );
-    PRT( "Other ", p->timeOther );
-    PRT( "TOTAL ", p->timeTotal );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the rewriting manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Dar_ManRefStop( Ref_Man_t * p )
-{
-    if ( p->pPars->fVerbose )
-        Dar_ManRefPrintStats( p );
-    Vec_VecFree( p->vCuts );
-    Vec_PtrFree( p->vTruthElem );
-    Vec_PtrFree( p->vTruthStore );
-    Vec_PtrFree( p->vLeavesBest );
-    Vec_IntFree( p->vMemory );
-    Vec_PtrFree( p->vCutNodes );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ref_ObjComputeCuts( Aig_Man_t * pAig, Aig_Obj_t * pRoot, Vec_Vec_t * vCuts )
-{
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ref_ObjPrint( Aig_Obj_t * pObj )
-{
-    printf( "%d", pObj? Aig_Regular(pObj)->Id : -1 );
-    if ( pObj )
-        printf( "(%d) ", Aig_IsComplement(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of new nodes added when using this graph.]
-
-  Description [AIG nodes for the fanins should be assigned to pNode->pFunc 
-  of the leaves of the graph before calling this procedure. 
-  Returns -1 if the number of nodes and levels exceeded the given limit or 
-  the number of levels exceeded the maximum allowed level.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_RefactTryGraph( Aig_Man_t * pAig, Aig_Obj_t * pRoot, Vec_Ptr_t * vCut, Kit_Graph_t * pGraph, int NodeMax, int LevelMax )
-{
-    Kit_Node_t * pNode, * pNode0, * pNode1;
-    Aig_Obj_t * pAnd, * pAnd0, * pAnd1;
-    int i, Counter, LevelNew, LevelOld;
-    // check for constant function or a literal
-    if ( Kit_GraphIsConst(pGraph) || Kit_GraphIsVar(pGraph) )
-        return 0;
-    // set the levels of the leaves
-    Kit_GraphForEachLeaf( pGraph, pNode, i )
-    {
-        pNode->pFunc = Vec_PtrEntry(vCut, i);
-        pNode->Level = Aig_Regular(pNode->pFunc)->Level;
-        assert( Aig_Regular(pNode->pFunc)->Level < (1<<14)-1 );
-    }
-//printf( "Trying:\n" );
-    // compute the AIG size after adding the internal nodes
-    Counter = 0;
-    Kit_GraphForEachNode( pGraph, pNode, i )
-    {
-        // get the children of this node
-        pNode0 = Kit_GraphNode( pGraph, pNode->eEdge0.Node );
-        pNode1 = Kit_GraphNode( pGraph, pNode->eEdge1.Node );
-        // get the AIG nodes corresponding to the children 
-        pAnd0 = pNode0->pFunc; 
-        pAnd1 = pNode1->pFunc; 
-        if ( pAnd0 && pAnd1 )
-        {
-            // if they are both present, find the resulting node
-            pAnd0 = Aig_NotCond( pAnd0, pNode->eEdge0.fCompl );
-            pAnd1 = Aig_NotCond( pAnd1, pNode->eEdge1.fCompl );
-            pAnd  = Aig_TableLookupTwo( pAig, pAnd0, pAnd1 );
-            // return -1 if the node is the same as the original root
-            if ( Aig_Regular(pAnd) == pRoot )
-                return -1;
-        }
-        else
-            pAnd = NULL;
-        // count the number of added nodes
-        if ( pAnd == NULL || Aig_ObjIsTravIdCurrent(pAig, Aig_Regular(pAnd)) )
-        {
-            if ( ++Counter > NodeMax )
-                return -1;
-        }
-        // count the number of new levels
-        LevelNew = 1 + AIG_MAX( pNode0->Level, pNode1->Level );
-        if ( pAnd )
-        {
-            if ( Aig_Regular(pAnd) == Aig_ManConst1(pAig) )
-                LevelNew = 0;
-            else if ( Aig_Regular(pAnd) == Aig_Regular(pAnd0) )
-                LevelNew = (int)Aig_Regular(pAnd0)->Level;
-            else if ( Aig_Regular(pAnd) == Aig_Regular(pAnd1) )
-                LevelNew = (int)Aig_Regular(pAnd1)->Level;
-            LevelOld = (int)Aig_Regular(pAnd)->Level;
-//            assert( LevelNew == LevelOld );
-        }
-        if ( LevelNew > LevelMax )
-            return -1;
-        pNode->pFunc = pAnd;
-        pNode->Level = LevelNew;
-/*
-printf( "Checking " );
-Ref_ObjPrint( pAnd0 );
-printf( " and " );
-Ref_ObjPrint( pAnd1 );
-printf( "  Result " );
-Ref_ObjPrint( pNode->pFunc );
-printf( "\n" );
-*/
-    }
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Dar_RefactBuildGraph( Aig_Man_t * pAig, Vec_Ptr_t * vCut, Kit_Graph_t * pGraph )
-{
-    Aig_Obj_t * pAnd0, * pAnd1;
-    Kit_Node_t * pNode;
-    int i;
-    // check for constant function
-    if ( Kit_GraphIsConst(pGraph) )
-        return Aig_NotCond( Aig_ManConst1(pAig), Kit_GraphIsComplement(pGraph) );
-    // set the leaves
-    Kit_GraphForEachLeaf( pGraph, pNode, i )
-        pNode->pFunc = Vec_PtrEntry(vCut, i);
-    // check for a literal
-    if ( Kit_GraphIsVar(pGraph) )
-        return Aig_NotCond( Kit_GraphVar(pGraph)->pFunc, Kit_GraphIsComplement(pGraph) );
-    // build the AIG nodes corresponding to the AND gates of the graph
-//printf( "Building (current number %d):\n", Aig_ManObjNumMax(pAig) );
-    Kit_GraphForEachNode( pGraph, pNode, i )
-    {
-        pAnd0 = Aig_NotCond( Kit_GraphNode(pGraph, pNode->eEdge0.Node)->pFunc, pNode->eEdge0.fCompl ); 
-        pAnd1 = Aig_NotCond( Kit_GraphNode(pGraph, pNode->eEdge1.Node)->pFunc, pNode->eEdge1.fCompl ); 
-        pNode->pFunc = Aig_And( pAig, pAnd0, pAnd1 );
-/*
-printf( "Checking " );
-Ref_ObjPrint( pAnd0 );
-printf( " and " );
-Ref_ObjPrint( pAnd1 );
-printf( "  Result " );
-Ref_ObjPrint( pNode->pFunc );
-printf( "\n" );
-*/
-    }
-    // complement the result if necessary
-    return Aig_NotCond( pNode->pFunc, Kit_GraphIsComplement(pGraph) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_ManRefactorTryCuts( Ref_Man_t * p, Aig_Obj_t * pObj, int nNodesSaved, int Required )
-{
-    Vec_Ptr_t * vCut;
-    Kit_Graph_t * pGraphCur;
-    int k, RetValue, GainCur, nNodesAdded;
-    unsigned * pTruth;
-
-    p->GainBest = -1;
-    p->pGraphBest = NULL;
-    Vec_VecForEachLevel( p->vCuts, vCut, k )
-    {
-        if ( Vec_PtrSize(vCut) == 0 )
-            continue;
-//        if ( Vec_PtrSize(vCut) != 0 && Vec_PtrSize(Vec_VecEntry(p->vCuts, k+1)) != 0 )
-//            continue;
-
-        p->nCutsTried++;
-        // get the cut nodes
-        Aig_ObjCollectCut( pObj, vCut, p->vCutNodes );
-        // get the truth table
-        pTruth = Aig_ManCutTruth( pObj, vCut, p->vCutNodes, p->vTruthElem, p->vTruthStore );
-        if ( Kit_TruthIsConst0(pTruth, Vec_PtrSize(vCut)) )
-        {
-            p->GainBest = Vec_PtrSize(p->vCutNodes);
-            p->pGraphBest = Kit_GraphCreateConst0();
-            Vec_PtrCopy( p->vLeavesBest, vCut );
-            return p->GainBest;
-        }
-        if ( Kit_TruthIsConst1(pTruth, Vec_PtrSize(vCut)) )
-        {
-            p->GainBest = Vec_PtrSize(p->vCutNodes);
-            p->pGraphBest = Kit_GraphCreateConst1();
-            Vec_PtrCopy( p->vLeavesBest, vCut );
-            return p->GainBest;
-        }
-
-        // try the positive phase
-        RetValue = Kit_TruthIsop( pTruth, Vec_PtrSize(vCut), p->vMemory, 0 );
-        if ( RetValue > -1 )
-        {
-            pGraphCur = Kit_SopFactor( p->vMemory, 0, Vec_PtrSize(vCut), p->vMemory );
-            nNodesAdded = Dar_RefactTryGraph( p->pAig, pObj, vCut, pGraphCur, nNodesSaved - !p->pPars->fUseZeros, Required );
-            if ( nNodesAdded > -1 )
-            {
-                GainCur = nNodesSaved - nNodesAdded;
-                if ( p->GainBest < GainCur || (p->GainBest == GainCur && 
-                    (Kit_GraphIsConst(pGraphCur) || Kit_GraphRootLevel(pGraphCur) < Kit_GraphRootLevel(p->pGraphBest))) )
-                {
-                    p->GainBest = GainCur;
-                    if ( p->pGraphBest )
-                        Kit_GraphFree( p->pGraphBest );
-                    p->pGraphBest = pGraphCur;
-                    Vec_PtrCopy( p->vLeavesBest, vCut );
-                }
-                else
-                    Kit_GraphFree( pGraphCur );
-            }
-            else
-                Kit_GraphFree( pGraphCur );
-        }
-        // try negative phase
-        Kit_TruthNot( pTruth, pTruth, Vec_PtrSize(vCut) );
-        RetValue = Kit_TruthIsop( pTruth, Vec_PtrSize(vCut), p->vMemory, 0 );
-        if ( RetValue > -1 )
-        {
-            pGraphCur = Kit_SopFactor( p->vMemory, 1, Vec_PtrSize(vCut), p->vMemory );
-            nNodesAdded = Dar_RefactTryGraph( p->pAig, pObj, vCut, pGraphCur, nNodesSaved - !p->pPars->fUseZeros, Required );
-            if ( nNodesAdded > -1 )
-            {
-                GainCur = nNodesSaved - nNodesAdded;
-                if ( p->GainBest < GainCur || (p->GainBest == GainCur && 
-                    (Kit_GraphIsConst(pGraphCur) || Kit_GraphRootLevel(pGraphCur) < Kit_GraphRootLevel(p->pGraphBest))) )
-                {
-                    p->GainBest = GainCur;
-                    if ( p->pGraphBest )
-                        Kit_GraphFree( p->pGraphBest );
-                    p->pGraphBest = pGraphCur;
-                    Vec_PtrCopy( p->vLeavesBest, vCut );
-                }
-                else
-                    Kit_GraphFree( pGraphCur );
-            }
-            else
-                Kit_GraphFree( pGraphCur );
-        }
-    }
-    return p->GainBest;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if a non-PI node has nLevelMin or below.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_ObjCutLevelAchieved( Vec_Ptr_t * vCut, int nLevelMin )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Vec_PtrForEachEntry( vCut, pObj, i )
-        if ( !Aig_ObjIsPi(pObj) && (int)pObj->Level <= nLevelMin )
-            return 1;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Dar_ManRefactor( Aig_Man_t * pAig, Dar_RefPar_t * pPars )
-{
-    Bar_Progress_t * pProgress;
-    Ref_Man_t * p;
-    Vec_Ptr_t * vCut, * vCut2;
-    Aig_Obj_t * pObj, * pObjNew;
-    int nNodesOld, nNodeBefore, nNodeAfter, nNodesSaved, nNodesSaved2;
-    int i, Required, nLevelMin, clkStart, clk;
-
-    // start the manager
-    p = Dar_ManRefStart( pAig, pPars );
-    // remove dangling nodes
-    Aig_ManCleanup( pAig );
-    // if updating levels is requested, start fanout and timing
-    Aig_ManFanoutStart( pAig );
-    if ( p->pPars->fUpdateLevel )
-        Aig_ManStartReverseLevels( pAig, 0 );
-
-    // resynthesize each node once
-    clkStart = clock();
-    vCut = Vec_VecEntry( p->vCuts, 0 );
-    vCut2 = Vec_VecEntry( p->vCuts, 1 );
-    p->nNodesInit = Aig_ManNodeNum(pAig);
-    nNodesOld = Vec_PtrSize( pAig->vObjs );
-    pProgress = Bar_ProgressStart( stdout, nNodesOld );
-    Aig_ManForEachObj( pAig, pObj, i )
-    {
-        Bar_ProgressUpdate( pProgress, i, NULL );
-        if ( !Aig_ObjIsNode(pObj) )
-            continue;
-        if ( i > nNodesOld )
-            break;
-        Vec_VecClear( p->vCuts );
-
-//printf( "\nConsidering node %d.\n", pObj->Id );
-        // get the bounded MFFC size
-clk = clock();
-        nLevelMin = AIG_MAX( 0, Aig_ObjLevel(pObj) - 10 );
-        nNodesSaved = Aig_NodeMffsSupp( pAig, pObj, nLevelMin, vCut );
-        if ( nNodesSaved < p->pPars->nMffcMin ) // too small to consider
-        {
-p->timeCuts += clock() - clk;
-            continue; 
-        }
-        p->nNodesTried++;
-        if ( Vec_PtrSize(vCut) > p->pPars->nLeafMax ) // get one reconv-driven cut
-        {
-            Aig_ManFindCut( pObj, vCut, p->vCutNodes, p->pPars->nLeafMax, 50 );
-            nNodesSaved = Aig_NodeMffsLabelCut( p->pAig, pObj, vCut );
-        }
-        else if ( Vec_PtrSize(vCut) < p->pPars->nLeafMax - 2 && p->pPars->fExtend )
-        {
-            if ( !Dar_ObjCutLevelAchieved(vCut, nLevelMin) )
-            {
-                if ( Aig_NodeMffsExtendCut( pAig, pObj, vCut, vCut2 ) )
-                {
-                    nNodesSaved2 = Aig_NodeMffsLabelCut( p->pAig, pObj, vCut );
-                    assert( nNodesSaved2 == nNodesSaved );
-                }
-                if ( Vec_PtrSize(vCut2) > p->pPars->nLeafMax )
-                    Vec_PtrClear(vCut2);
-                if ( Vec_PtrSize(vCut2) > 0 )
-                {
-                    p->nNodesExten++;
-//                    printf( "%d(%d) ", Vec_PtrSize(vCut), Vec_PtrSize(vCut2) );
-                }
-            }
-            else
-                p->nNodesBelow++;
-        }
-p->timeCuts += clock() - clk;
-
-        // try the cuts
-clk = clock();
-        Required = pAig->vLevelR? Aig_ObjRequiredLevel(pAig, pObj) : AIG_INFINITY;
-        Dar_ManRefactorTryCuts( p, pObj, nNodesSaved, Required );
-p->timeEval += clock() - clk;
-
-        // check the best gain
-        if ( !(p->GainBest > 0 || (p->GainBest == 0 && p->pPars->fUseZeros)) )
-        {
-            if ( p->pGraphBest )
-                Kit_GraphFree( p->pGraphBest );
-            continue;
-        }
-//printf( "\n" );
-
-        // if we end up here, a rewriting step is accepted
-        nNodeBefore = Aig_ManNodeNum( pAig );
-        pObjNew = Dar_RefactBuildGraph( pAig, p->vLeavesBest, p->pGraphBest );
-        assert( (int)Aig_Regular(pObjNew)->Level <= Required );
-        // replace the node
-        Aig_ObjReplace( pAig, pObj, pObjNew, 1, p->pPars->fUpdateLevel );
-        // compare the gains
-        nNodeAfter = Aig_ManNodeNum( pAig );
-        assert( p->GainBest <= nNodeBefore - nNodeAfter );
-        Kit_GraphFree( p->pGraphBest );
-        p->nCutsUsed++;
-//        break;
-    }
-p->timeTotal = clock() - clkStart;
-p->timeOther = p->timeTotal - p->timeCuts - p->timeEval;
-
-    Bar_ProgressStop( pProgress );
-    // put the nodes into the DFS order and reassign their IDs
-//    Aig_NtkReassignIds( p );
-    // fix the levels
-    Aig_ManFanoutStop( pAig );
-    if ( p->pPars->fUpdateLevel )
-        Aig_ManStopReverseLevels( pAig );
-
-    // stop the rewriting manager
-    Dar_ManRefStop( p );
-    Aig_ManCheckPhase( pAig );
-    if ( !Aig_ManCheck( pAig ) )
-    {
-        printf( "Dar_ManRefactor: The network check has failed.\n" );
-        return 0;
-    }
-    return 1;
-
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darResub.c b/src/aig/dar/darResub.c
deleted file mode 100644
index f819934e..00000000
--- a/src/aig/dar/darResub.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darResub.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darResub.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darScript.c b/src/aig/dar/darScript.c
deleted file mode 100644
index 9eb5e280..00000000
--- a/src/aig/dar/darScript.c
+++ /dev/null
@@ -1,369 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darScript.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Rewriting scripts.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darScript.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-#include "ioa.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Performs one iteration of AIG rewriting.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Dar_ManRewriteDefault( Aig_Man_t * pAig )
-{
-    Aig_Man_t * pTemp;
-    Dar_RwrPar_t Pars, * pPars = &Pars;
-    Dar_ManDefaultRwrParams( pPars );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-    Dar_ManRewrite( pAig, pPars );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-    return pAig;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reproduces script "compress2".]
-
-  Description []
-               
-  SideEffects [This procedure does not tighten level during restructuring.]
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Dar_ManRwsat( Aig_Man_t * pAig, int fBalance, int fVerbose )
-//alias rwsat       "st; rw -l; b -l; rw -l; rf -l"
-{
-    Aig_Man_t * pTemp;
-
-    Dar_RwrPar_t ParsRwr, * pParsRwr = &ParsRwr;
-    Dar_RefPar_t ParsRef, * pParsRef = &ParsRef;
-
-    Dar_ManDefaultRwrParams( pParsRwr );
-    Dar_ManDefaultRefParams( pParsRef );
-
-    pParsRwr->fUpdateLevel = 0;
-    pParsRef->fUpdateLevel = 0;
-
-    pParsRwr->fVerbose = fVerbose;
-    pParsRef->fVerbose = fVerbose;
-
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-    
-    // rewrite
-    Dar_ManRewrite( pAig, pParsRwr );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-    
-    // refactor
-    Dar_ManRefactor( pAig, pParsRef );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-
-    // balance
-    if ( fBalance )
-    {
-    pAig = Dar_ManBalance( pTemp = pAig, 0 );
-    Aig_ManStop( pTemp );
-    }
-    
-    // rewrite
-    Dar_ManRewrite( pAig, pParsRwr );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-
-    return pAig;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Reproduces script "compress".]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Dar_ManCompress( Aig_Man_t * pAig, int fBalance, int fUpdateLevel, int fVerbose )
-//alias compress2   "b -l; rw -l; rwz -l; b -l; rwz -l; b -l"
-{
-    Aig_Man_t * pTemp;
-
-    Dar_RwrPar_t ParsRwr, * pParsRwr = &ParsRwr;
-    Dar_RefPar_t ParsRef, * pParsRef = &ParsRef;
-
-    Dar_ManDefaultRwrParams( pParsRwr );
-    Dar_ManDefaultRefParams( pParsRef );
-
-    pParsRwr->fUpdateLevel = fUpdateLevel;
-    pParsRef->fUpdateLevel = fUpdateLevel;
-
-    pParsRwr->fVerbose = fVerbose;
-    pParsRef->fVerbose = fVerbose;
-
-    pAig = Aig_ManDup( pAig, 0 ); 
-
-    // balance
-    if ( fBalance )
-    {
-//    pAig = Dar_ManBalance( pTemp = pAig, fUpdateLevel );
-//    Aig_ManStop( pTemp );
-    }
-    
-    // rewrite
-    Dar_ManRewrite( pAig, pParsRwr );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-    
-    // refactor
-    Dar_ManRefactor( pAig, pParsRef );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-
-    // balance
-    if ( fBalance )
-    {
-    pAig = Dar_ManBalance( pTemp = pAig, fUpdateLevel );
-    Aig_ManStop( pTemp );
-    }
-
-    pParsRwr->fUseZeros = 1;
-    pParsRef->fUseZeros = 1;
-    
-    // rewrite
-    Dar_ManRewrite( pAig, pParsRwr );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-
-    return pAig;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reproduces script "compress2".]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Dar_ManCompress2( Aig_Man_t * pAig, int fBalance, int fUpdateLevel, int fVerbose )
-//alias compress2   "b -l; rw -l; rf -l; b -l; rw -l; rwz -l; b -l; rfz -l; rwz -l; b -l"
-{
-    Aig_Man_t * pTemp;
-
-    Dar_RwrPar_t ParsRwr, * pParsRwr = &ParsRwr;
-    Dar_RefPar_t ParsRef, * pParsRef = &ParsRef;
-
-    Dar_ManDefaultRwrParams( pParsRwr );
-    Dar_ManDefaultRefParams( pParsRef );
-
-    pParsRwr->fUpdateLevel = fUpdateLevel;
-    pParsRef->fUpdateLevel = fUpdateLevel;
-
-    pParsRwr->fVerbose = fVerbose;
-    pParsRef->fVerbose = fVerbose;
-
-    pAig = Aig_ManDup( pAig, 0 ); 
-
-    // balance
-    if ( fBalance )
-    {
-//    pAig = Dar_ManBalance( pTemp = pAig, fUpdateLevel );
-//    Aig_ManStop( pTemp );
-    }
-    
-    // rewrite
-    Dar_ManRewrite( pAig, pParsRwr );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-    
-    // refactor
-    Dar_ManRefactor( pAig, pParsRef );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-
-    // balance
-//    if ( fBalance )
-    {
-    pAig = Dar_ManBalance( pTemp = pAig, fUpdateLevel );
-    Aig_ManStop( pTemp );
-    }
-    
-    // rewrite
-    Dar_ManRewrite( pAig, pParsRwr );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-
-    pParsRwr->fUseZeros = 1;
-    pParsRef->fUseZeros = 1;
-    
-    // rewrite
-    Dar_ManRewrite( pAig, pParsRwr );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-
-    // balance
-    if ( fBalance )
-    {
-    pAig = Dar_ManBalance( pTemp = pAig, fUpdateLevel );
-    Aig_ManStop( pTemp );
-    }
-    
-    // refactor
-    Dar_ManRefactor( pAig, pParsRef );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-    
-    // rewrite
-    Dar_ManRewrite( pAig, pParsRwr );
-    pAig = Aig_ManDup( pTemp = pAig, 0 ); 
-    Aig_ManStop( pTemp );
-
-    // balance
-    if ( fBalance )
-    {
-    pAig = Dar_ManBalance( pTemp = pAig, fUpdateLevel );
-    Aig_ManStop( pTemp );
-    }
-    return pAig;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reproduces script "compress2".]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Dar_ManChoiceSynthesis( Aig_Man_t * pAig, int fBalance, int fUpdateLevel, int fVerbose )
-//alias resyn    "b; rw; rwz; b; rwz; b"
-//alias resyn2   "b; rw; rf; b; rw; rwz; b; rfz; rwz; b"
-{
-    Vec_Ptr_t * vAigs;
-    vAigs = Vec_PtrAlloc( 3 );
-    pAig = Aig_ManDup(pAig, 0);
-    Vec_PtrPush( vAigs, pAig );
-    pAig = Dar_ManCompress (pAig, 0, fUpdateLevel, fVerbose);
-    Vec_PtrPush( vAigs, pAig );
-    pAig = Dar_ManCompress2(pAig, fBalance, fUpdateLevel, fVerbose);
-    Vec_PtrPush( vAigs, pAig );
-    return vAigs;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Gives the current ABC network to AIG manager for processing.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Dar_ManChoiceSynthesisExt()
-{
-    Vec_Ptr_t * vAigs;
-    Aig_Man_t * pMan;
-    vAigs = Vec_PtrAlloc( 3 );
-    pMan = Ioa_ReadAiger( "i10_1.aig", 1 );
-    Vec_PtrPush( vAigs, pMan );
-    pMan = Ioa_ReadAiger( "i10_2.aig", 1 );
-    Vec_PtrPush( vAigs, pMan );
-    pMan = Ioa_ReadAiger( "i10_3.aig", 1 );
-    Vec_PtrPush( vAigs, pMan );
-    return vAigs;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reproduces script "compress2".]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Dar_ManChoice( Aig_Man_t * pAig, int fBalance, int fUpdateLevel, int fVerbose )
-{
-    Aig_Man_t * pMan, * pTemp;
-    Vec_Ptr_t * vAigs;
-    int i, clk;
-
-clk = clock();
-//    vAigs = Dar_ManChoiceSynthesisExt();
-    vAigs = Dar_ManChoiceSynthesis( pAig, fBalance, fUpdateLevel, fVerbose );
-
-    // swap the first and last network
-    // this should lead to the primary choice being "better" because of synthesis
-    pMan = Vec_PtrPop( vAigs );
-    Vec_PtrPush( vAigs, Vec_PtrEntry(vAigs,0) );
-    Vec_PtrWriteEntry( vAigs, 0, pMan );
-
-if ( fVerbose )
-{
-PRT( "Synthesis time", clock() - clk );
-}
-clk = clock();
-    pMan = Aig_ManChoicePartitioned( vAigs, 300 );
-    Vec_PtrForEachEntry( vAigs, pTemp, i )
-        Aig_ManStop( pTemp );
-    Vec_PtrFree( vAigs );
-if ( fVerbose )
-{
-PRT( "Choicing time ", clock() - clk );
-}
-    return pMan;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/darTruth.c b/src/aig/dar/darTruth.c
deleted file mode 100644
index 7fd47787..00000000
--- a/src/aig/dar/darTruth.c
+++ /dev/null
@@ -1,353 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [darTruth.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    [Computes the truth table of a cut.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: darTruth.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-#if 0 
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManCollectCut_rec( Aig_Man_t * p, Aig_Obj_t * pNode, Vec_Int_t * vNodes )
-{
-    if ( pNode->fMarkA )
-        return;
-    pNode->fMarkA = 1;
-    assert( Aig_ObjIsAnd(pNode) || Aig_ObjIsExor(pNode) );
-    Aig_ManCollectCut_rec( p, Aig_ObjFanin0(pNode), vNodes );
-    Aig_ManCollectCut_rec( p, Aig_ObjFanin1(pNode), vNodes );
-    Vec_IntPush( vNodes, pNode->Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description [Does not modify the array of leaves. Uses array vTruth to store 
-  temporary truth tables. The returned pointer should be used immediately.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManCollectCut( Aig_Man_t * p, Aig_Obj_t * pRoot, Vec_Int_t * vLeaves, Vec_Int_t * vNodes )
-{
-    int i, Leaf;
-    // collect and mark the leaves
-    Vec_IntClear( vNodes );
-    Vec_IntForEachEntry( vLeaves, Leaf, i )
-    {
-        Vec_IntPush( vNodes, Leaf );
-        Aig_ManObj(p, Leaf)->fMarkA = 1;
-    }
-    // collect and mark the nodes
-    Aig_ManCollectCut_rec( p, pRoot, vNodes );
-    // clean the nodes
-    Vec_IntForEachEntry( vNodes, Leaf, i )
-        Aig_ManObj(p, Leaf)->fMarkA = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the pointer to the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Aig_ObjGetTruthStore( int ObjNum, Vec_Int_t * vTruth )
-{
-   return ((unsigned *)Vec_IntArray(vTruth)) + 8 * ObjNum;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManCutTruthOne( Aig_Man_t * p, Aig_Obj_t * pNode, Vec_Int_t * vTruth, int nWords )
-{
-    unsigned * pTruth, * pTruth0, * pTruth1;
-    int i;
-    pTruth  = Aig_ObjGetTruthStore( pNode->Level, vTruth );
-    pTruth0 = Aig_ObjGetTruthStore( Aig_ObjFanin0(pNode)->Level, vTruth );
-    pTruth1 = Aig_ObjGetTruthStore( Aig_ObjFanin1(pNode)->Level, vTruth );
-    if ( Aig_ObjIsExor(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = pTruth0[i] ^ pTruth1[i];
-    else if ( !Aig_ObjFaninC0(pNode) && !Aig_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = pTruth0[i] & pTruth1[i];
-    else if ( !Aig_ObjFaninC0(pNode) && Aig_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = pTruth0[i] & ~pTruth1[i];
-    else if ( Aig_ObjFaninC0(pNode) && !Aig_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ~pTruth0[i] & pTruth1[i];
-    else // if ( Aig_ObjFaninC0(pNode) && Aig_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ~pTruth0[i] & ~pTruth1[i];
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description [Does not modify the array of leaves. Uses array vTruth to store 
-  temporary truth tables. The returned pointer should be used immediately.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Aig_ManCutTruth( Aig_Man_t * p, Aig_Obj_t * pRoot, Vec_Int_t * vLeaves, Vec_Int_t * vNodes, Vec_Int_t * vTruth )
-{
-    static unsigned uTruths[8][8] = { // elementary truth tables
-        { 0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA },
-        { 0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC },
-        { 0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0 },
-        { 0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00 },
-        { 0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000 }, 
-        { 0x00000000,0xFFFFFFFF,0x00000000,0xFFFFFFFF,0x00000000,0xFFFFFFFF,0x00000000,0xFFFFFFFF }, 
-        { 0x00000000,0x00000000,0xFFFFFFFF,0xFFFFFFFF,0x00000000,0x00000000,0xFFFFFFFF,0xFFFFFFFF }, 
-        { 0x00000000,0x00000000,0x00000000,0x00000000,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF } 
-    };
-    int i, Leaf;
-    // collect the cut
-//    Aig_ManCollectCut( p, pRoot, vLeaves, vNodes );
-    // set the node numbers
-    Vec_IntForEachEntry( vNodes, Leaf, i )
-        Aig_ManObj(p, Leaf)->Level = i;
-    // alloc enough memory
-    Vec_IntClear( vTruth );
-    Vec_IntGrow( vTruth, 8 * Vec_IntSize(vNodes) );
-    // set the elementary truth tables
-    Vec_IntForEachEntry( vLeaves, Leaf, i )
-        memcpy( Aig_ObjGetTruthStore(i, vTruth), uTruths[i], 8 * sizeof(unsigned) );
-    // compute truths for other nodes
-    Vec_IntForEachEntryStart( vNodes, Leaf, i, Vec_IntSize(vLeaves) )
-        Aig_ManCutTruthOne( p, Aig_ManObj(p, Leaf), vTruth, 8 );
-    return Aig_ObjGetTruthStore( pRoot->Level, vTruth );
-}
-
-static inline int          Kit_TruthWordNum( int nVars )  { return nVars <= 5 ? 1 : (1 << (nVars - 5));                             }
-static inline void Kit_TruthNot( unsigned * pOut, unsigned * pIn, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = ~pIn[w];
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the cost based on two ISOPs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManLargeCutEvalIsop( unsigned * pTruth, int nVars, Vec_Int_t * vMemory )
-{
-    extern int Kit_TruthIsop( unsigned * puTruth, int nVars, Vec_Int_t * vMemory, int fTryBoth );
-    int RetValue, nClauses;
-    // compute ISOP for the positive phase
-    RetValue = Kit_TruthIsop( pTruth, nVars, vMemory, 0 );
-    if ( RetValue == -1 )
-        return AIG_INFINITY;
-    assert( RetValue == 0 || RetValue == 1 );
-    nClauses = Vec_IntSize( vMemory );
-    // compute ISOP for the negative phase
-    Kit_TruthNot( pTruth, pTruth, nVars );
-    RetValue = Kit_TruthIsop( pTruth, nVars, vMemory, 0 );
-    if ( RetValue == -1 )
-        return AIG_INFINITY;
-    Kit_TruthNot( pTruth, pTruth, nVars );
-    assert( RetValue == 0 || RetValue == 1 );
-    nClauses += Vec_IntSize( vMemory );
-    return nClauses;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManLargeCutCollect_rec( Aig_Man_t * p, Aig_Obj_t * pNode, Vec_Int_t * vLeaves, Vec_Int_t * vNodes )
-{
-    if ( Aig_ObjIsTravIdCurrent(p, pNode) )
-        return;
-    if ( Aig_ObjIsTravIdPrevious(p, pNode) )
-    {
-        Vec_IntPush( vLeaves, pNode->Id );
-//        Vec_IntPush( vNodes, pNode->Id );
-        Aig_ObjSetTravIdCurrent( p, pNode );
-        return;
-    }
-    assert( Aig_ObjIsAnd(pNode) || Aig_ObjIsExor(pNode) );
-    Aig_ObjSetTravIdCurrent( p, pNode );
-    Aig_ManLargeCutCollect_rec( p, Aig_ObjFanin0(pNode), vLeaves, vNodes );
-    Aig_ManLargeCutCollect_rec( p, Aig_ObjFanin1(pNode), vLeaves, vNodes );
-    Vec_IntPush( vNodes, pNode->Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collect leaves and nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Aig_ManLargeCutCollect( Aig_Man_t * p, Aig_Obj_t * pRoot, Aig_Cut_t * pCutR, Aig_Cut_t * pCutL, int Leaf, 
-                        Vec_Int_t * vLeaves, Vec_Int_t * vNodes )
-{
-    Vec_Int_t * vTemp;
-    Aig_Obj_t * pObj;
-    int Node, i;
-
-    Aig_ManIncrementTravId( p );
-    Aig_CutForEachLeaf( p, pCutR, pObj, i )
-        if ( pObj->Id != Leaf )
-           Aig_ObjSetTravIdCurrent( p, pObj );
-    Aig_CutForEachLeaf( p, pCutL, pObj, i )
-        Aig_ObjSetTravIdCurrent( p, pObj );
-
-    // collect the internal nodes and leaves
-    Aig_ManIncrementTravId( p );
-    vTemp = Vec_IntAlloc( 100 );
-    Aig_ManLargeCutCollect_rec( p, pRoot, vLeaves, vTemp );
-
-    Vec_IntForEachEntry( vLeaves, Node, i )
-        Vec_IntPush( vNodes, Node );
-    Vec_IntForEachEntry( vTemp, Node, i )
-        Vec_IntPush( vNodes, Node );
-
-    Vec_IntFree( vTemp );
-
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Aig_ManLargeCutEval( Aig_Man_t * p, Aig_Obj_t * pRoot, Aig_Cut_t * pCutR, Aig_Cut_t * pCutL, int Leaf )
-{
-    Vec_Int_t * vLeaves, * vNodes, * vTruth, * vMemory;
-    unsigned * pTruth;
-    int RetValue;
-//    Aig_Obj_t * pObj;
-
-    vMemory = Vec_IntAlloc( 1 << 16 );
-    vTruth = Vec_IntAlloc( 1 << 16 );
-    vLeaves = Vec_IntAlloc( 100 );
-    vNodes = Vec_IntAlloc( 100 );
-
-    Aig_ManLargeCutCollect( p, pRoot, pCutR, pCutL, Leaf, vLeaves, vNodes );
-/*
-    // collect the nodes
-    Aig_CutForEachLeaf( p, pCutR, pObj, i )
-    {
-        if ( pObj->Id == Leaf )
-            continue;
-        if ( pObj->fMarkA )
-            continue;
-        pObj->fMarkA = 1;
-        Vec_IntPush( vLeaves, pObj->Id );
-        Vec_IntPush( vNodes, pObj->Id );
-    }
-    Aig_CutForEachLeaf( p, pCutL, pObj, i )
-    {
-        if ( pObj->fMarkA )
-            continue;
-        pObj->fMarkA = 1;
-        Vec_IntPush( vLeaves, pObj->Id );
-        Vec_IntPush( vNodes, pObj->Id );
-    }
-    // collect and mark the nodes
-    Aig_ManCollectCut_rec( p, pRoot, vNodes );
-    // clean the nodes
-    Vec_IntForEachEntry( vNodes, Leaf, i )
-        Aig_ManObj(p, Leaf)->fMarkA = 0;
-*/
-
-    pTruth = Aig_ManCutTruth( p, pRoot, vLeaves, vNodes, vTruth );
-    RetValue = Aig_ManLargeCutEvalIsop( pTruth, Vec_IntSize(vLeaves), vMemory );
-
-    Vec_IntFree( vLeaves );
-    Vec_IntFree( vNodes );
-    Vec_IntFree( vTruth );
-    Vec_IntFree( vMemory );
-
-    return RetValue;
-}
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/dar_.c b/src/aig/dar/dar_.c
deleted file mode 100644
index 12fd7d17..00000000
--- a/src/aig/dar/dar_.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [dar_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: dar_.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "darInt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/dar/module.make b/src/aig/dar/module.make
deleted file mode 100644
index 0a1f7687..00000000
--- a/src/aig/dar/module.make
+++ /dev/null
@@ -1,11 +0,0 @@
-SRC +=    src/aig/dar/darBalance.c \
-    src/aig/dar/darCore.c \
-    src/aig/dar/darCut.c \
-    src/aig/dar/darData.c \
-    src/aig/dar/darLib.c \
-    src/aig/dar/darMan.c \
-    src/aig/dar/darPrec.c \
-    src/aig/dar/darRefact.c \
-    src/aig/dar/darResub.c \
-    src/aig/dar/darScript.c \
-    src/aig/dar/darTruth.c
diff --git a/src/aig/deco/deco.h b/src/aig/deco/deco.h
deleted file mode 100644
index 67126902..00000000
--- a/src/aig/deco/deco.h
+++ /dev/null
@@ -1,703 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [deco.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [A simple decomposition tree/node data structure and its APIs.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: deco.h,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
-
-***********************************************************************/
- 
-#ifndef __DEC_H__
-#define __DEC_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Dec_Edge_t_ Dec_Edge_t;
-struct Dec_Edge_t_
-{
-    unsigned          fCompl   :  1;   // the complemented bit
-    unsigned          Node     : 30;   // the decomposition node pointed by the edge
-};
-
-typedef struct Dec_Node_t_ Dec_Node_t;
-struct Dec_Node_t_
-{
-    Dec_Edge_t        eEdge0;          // the left child of the node
-    Dec_Edge_t        eEdge1;          // the right child of the node
-    // other info
-    void *            pFunc;           // the function of the node (BDD or AIG)
-    unsigned          Level    : 14;   // the level of this node in the global AIG
-    // printing info 
-    unsigned          fNodeOr  :  1;   // marks the original OR node
-    unsigned          fCompl0  :  1;   // marks the original complemented edge
-    unsigned          fCompl1  :  1;   // marks the original complemented edge
-    // latch info
-    unsigned          nLat0    :  5;   // the number of latches on the first edge
-    unsigned          nLat1    :  5;   // the number of latches on the second edge
-    unsigned          nLat2    :  5;   // the number of latches on the output edge
-};
-
-typedef struct Dec_Graph_t_ Dec_Graph_t;
-struct Dec_Graph_t_
-{
-    int               fConst;          // marks the constant 1 graph
-    int               nLeaves;         // the number of leaves
-    int               nSize;           // the number of nodes (including the leaves) 
-    int               nCap;            // the number of allocated nodes
-    Dec_Node_t *      pNodes;          // the array of leaves and internal nodes
-    Dec_Edge_t        eRoot;           // the pointer to the topmost node
-};
-
-typedef struct Dec_Man_t_ Dec_Man_t;
-struct Dec_Man_t_
-{
-    void *            pMvcMem;         // memory manager for MVC cover (used for factoring)
-    Vec_Int_t *       vCubes;          // storage for cubes
-    Vec_Int_t *       vLits;           // storage for literals 
-    // precomputation information about 4-variable functions
-    unsigned short *  puCanons;        // canonical forms
-    char *            pPhases;         // canonical phases
-    char *            pPerms;          // canonical permutations
-    unsigned char *   pMap;            // mapping of functions into class numbers
-};
-
-
-////////////////////////////////////////////////////////////////////////
-///                        ITERATORS                                 ///
-////////////////////////////////////////////////////////////////////////
-
-// interator throught the leaves
-#define Dec_GraphForEachLeaf( pGraph, pLeaf, i )                                              \
-    for ( i = 0; (i < (pGraph)->nLeaves) && (((pLeaf) = Dec_GraphNode(pGraph, i)), 1); i++ )
-// interator throught the internal nodes
-#define Dec_GraphForEachNode( pGraph, pAnd, i )                                               \
-    for ( i = (pGraph)->nLeaves; (i < (pGraph)->nSize) && (((pAnd) = Dec_GraphNode(pGraph, i)), 1); i++ )
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Creates an edge pointing to the node in the given polarity.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Edge_t Dec_EdgeCreate( int Node, int fCompl )   
-{
-    Dec_Edge_t eEdge = { fCompl, Node }; 
-    return eEdge; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Converts the edge into unsigned integer.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Dec_EdgeToInt( Dec_Edge_t eEdge )   
-{
-    return (eEdge.Node << 1) | eEdge.fCompl; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Converts unsigned integer into the edge.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Edge_t Dec_IntToEdge( unsigned Edge )   
-{
-    return Dec_EdgeCreate( Edge >> 1, Edge & 1 ); 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Converts the edge into unsigned integer.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Dec_EdgeToInt_( Dec_Edge_t eEdge )   
-{
-    return *(unsigned *)&eEdge;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Converts unsigned integer into the edge.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Edge_t Dec_IntToEdge_( unsigned Edge )   
-{
-    return *(Dec_Edge_t *)&Edge;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates a graph with the given number of leaves.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Graph_t * Dec_GraphCreate( int nLeaves )   
-{
-    Dec_Graph_t * pGraph;
-    pGraph = ALLOC( Dec_Graph_t, 1 );
-    memset( pGraph, 0, sizeof(Dec_Graph_t) );
-    pGraph->nLeaves = nLeaves;
-    pGraph->nSize = nLeaves;
-    pGraph->nCap = 2 * nLeaves + 50;
-    pGraph->pNodes = ALLOC( Dec_Node_t, pGraph->nCap );
-    memset( pGraph->pNodes, 0, sizeof(Dec_Node_t) * pGraph->nSize );
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates constant 0 graph.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Graph_t * Dec_GraphCreateConst0()   
-{
-    Dec_Graph_t * pGraph;
-    pGraph = ALLOC( Dec_Graph_t, 1 );
-    memset( pGraph, 0, sizeof(Dec_Graph_t) );
-    pGraph->fConst = 1;
-    pGraph->eRoot.fCompl = 1;
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates constant 1 graph.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Graph_t * Dec_GraphCreateConst1()   
-{
-    Dec_Graph_t * pGraph;
-    pGraph = ALLOC( Dec_Graph_t, 1 );
-    memset( pGraph, 0, sizeof(Dec_Graph_t) );
-    pGraph->fConst = 1;
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the literal graph.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Graph_t * Dec_GraphCreateLeaf( int iLeaf, int nLeaves, int fCompl )   
-{
-    Dec_Graph_t * pGraph;
-    assert( 0 <= iLeaf && iLeaf < nLeaves );
-    pGraph = Dec_GraphCreate( nLeaves );
-    pGraph->eRoot.Node   = iLeaf;
-    pGraph->eRoot.fCompl = fCompl;
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates a graph with the given number of leaves.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Dec_GraphFree( Dec_Graph_t * pGraph )   
-{
-    FREE( pGraph->pNodes );
-    free( pGraph );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the graph is a constant.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphIsConst( Dec_Graph_t * pGraph )   
-{
-    return pGraph->fConst;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the graph is constant 0.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphIsConst0( Dec_Graph_t * pGraph )   
-{
-    return pGraph->fConst && pGraph->eRoot.fCompl;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the graph is constant 1.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphIsConst1( Dec_Graph_t * pGraph )   
-{
-    return pGraph->fConst && !pGraph->eRoot.fCompl;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the graph is complemented.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphIsComplement( Dec_Graph_t * pGraph )   
-{
-    return pGraph->eRoot.fCompl;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks if the graph is complemented.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Dec_GraphComplement( Dec_Graph_t * pGraph )   
-{
-    pGraph->eRoot.fCompl ^= 1;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of leaves.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphLeaveNum( Dec_Graph_t * pGraph )   
-{
-    return pGraph->nLeaves;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of internal nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphNodeNum( Dec_Graph_t * pGraph )   
-{
-    return pGraph->nSize - pGraph->nLeaves;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the pointer to the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Node_t * Dec_GraphNode( Dec_Graph_t * pGraph, int i )   
-{
-    return pGraph->pNodes + i;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the pointer to the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Node_t * Dec_GraphNodeLast( Dec_Graph_t * pGraph )   
-{
-    return pGraph->pNodes + pGraph->nSize - 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of the given node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphNodeInt( Dec_Graph_t * pGraph, Dec_Node_t * pNode )   
-{
-    return pNode - pGraph->pNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check if the graph represents elementary variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphIsVar( Dec_Graph_t * pGraph )   
-{
-    return pGraph->eRoot.Node < (unsigned)pGraph->nLeaves;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check if the graph represents elementary variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphNodeIsVar( Dec_Graph_t * pGraph, Dec_Node_t * pNode )   
-{
-    return Dec_GraphNodeInt(pGraph,pNode) < pGraph->nLeaves;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the elementary variable elementary variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Node_t * Dec_GraphVar( Dec_Graph_t * pGraph )   
-{
-    assert( Dec_GraphIsVar( pGraph ) );
-    return Dec_GraphNode( pGraph, pGraph->eRoot.Node );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of the elementary variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Dec_GraphVarInt( Dec_Graph_t * pGraph )   
-{
-    assert( Dec_GraphIsVar( pGraph ) );
-    return Dec_GraphNodeInt( pGraph, Dec_GraphVar(pGraph) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the root of the graph.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Dec_GraphSetRoot( Dec_Graph_t * pGraph, Dec_Edge_t eRoot )   
-{
-    pGraph->eRoot = eRoot;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Appends a new node to the graph.]
-
-  Description [This procedure is meant for internal use.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Node_t * Dec_GraphAppendNode( Dec_Graph_t * pGraph )   
-{
-    Dec_Node_t * pNode;
-    if ( pGraph->nSize == pGraph->nCap )
-    {
-        pGraph->pNodes = REALLOC( Dec_Node_t, pGraph->pNodes, 2 * pGraph->nCap ); 
-        pGraph->nCap   = 2 * pGraph->nCap;
-    }
-    pNode = pGraph->pNodes + pGraph->nSize++;
-    memset( pNode, 0, sizeof(Dec_Node_t) );
-    return pNode;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates an AND node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Edge_t Dec_GraphAddNodeAnd( Dec_Graph_t * pGraph, Dec_Edge_t eEdge0, Dec_Edge_t eEdge1 )
-{
-    Dec_Node_t * pNode;
-    // get the new node
-    pNode = Dec_GraphAppendNode( pGraph );
-    // set the inputs and other info
-    pNode->eEdge0 = eEdge0;
-    pNode->eEdge1 = eEdge1;
-    pNode->fCompl0 = eEdge0.fCompl;
-    pNode->fCompl1 = eEdge1.fCompl;
-    return Dec_EdgeCreate( pGraph->nSize - 1, 0 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates an OR node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Edge_t Dec_GraphAddNodeOr( Dec_Graph_t * pGraph, Dec_Edge_t eEdge0, Dec_Edge_t eEdge1 )
-{
-    Dec_Node_t * pNode;
-    // get the new node
-    pNode = Dec_GraphAppendNode( pGraph );
-    // set the inputs and other info
-    pNode->eEdge0 = eEdge0;
-    pNode->eEdge1 = eEdge1;
-    pNode->fCompl0 = eEdge0.fCompl;
-    pNode->fCompl1 = eEdge1.fCompl;
-    // make adjustments for the OR gate
-    pNode->fNodeOr = 1;
-    pNode->eEdge0.fCompl = !pNode->eEdge0.fCompl;
-    pNode->eEdge1.fCompl = !pNode->eEdge1.fCompl;
-    return Dec_EdgeCreate( pGraph->nSize - 1, 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates an XOR node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Edge_t Dec_GraphAddNodeXor( Dec_Graph_t * pGraph, Dec_Edge_t eEdge0, Dec_Edge_t eEdge1, int Type )
-{
-    Dec_Edge_t eNode0, eNode1, eNode;
-    if ( Type == 0 )
-    {
-        // derive the first AND
-        eEdge0.fCompl ^= 1;
-        eNode0 = Dec_GraphAddNodeAnd( pGraph, eEdge0, eEdge1 );
-        eEdge0.fCompl ^= 1;
-        // derive the second AND
-        eEdge1.fCompl ^= 1;
-        eNode1 = Dec_GraphAddNodeAnd( pGraph, eEdge0, eEdge1 );
-        // derive the final OR
-        eNode = Dec_GraphAddNodeOr( pGraph, eNode0, eNode1 );
-    }
-    else
-    {
-        // derive the first AND
-        eNode0 = Dec_GraphAddNodeAnd( pGraph, eEdge0, eEdge1 );
-        // derive the second AND
-        eEdge0.fCompl ^= 1;
-        eEdge1.fCompl ^= 1;
-        eNode1 = Dec_GraphAddNodeAnd( pGraph, eEdge0, eEdge1 );
-        // derive the final OR
-        eNode = Dec_GraphAddNodeOr( pGraph, eNode0, eNode1 );
-        eNode.fCompl ^= 1;
-    }
-    return eNode;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates an XOR node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Dec_Edge_t Dec_GraphAddNodeMux( Dec_Graph_t * pGraph, Dec_Edge_t eEdgeC, Dec_Edge_t eEdgeT, Dec_Edge_t eEdgeE, int Type )
-{
-    Dec_Edge_t eNode0, eNode1, eNode;
-    if ( Type == 0 )
-    {
-        // derive the first AND
-        eNode0 = Dec_GraphAddNodeAnd( pGraph, eEdgeC, eEdgeT );
-        // derive the second AND
-        eEdgeC.fCompl ^= 1;
-        eNode1 = Dec_GraphAddNodeAnd( pGraph, eEdgeC, eEdgeE );
-        // derive the final OR
-        eNode = Dec_GraphAddNodeOr( pGraph, eNode0, eNode1 );
-    }
-    else
-    {
-        // complement the arguments
-        eEdgeT.fCompl ^= 1;
-        eEdgeE.fCompl ^= 1;
-        // derive the first AND
-        eNode0 = Dec_GraphAddNodeAnd( pGraph, eEdgeC, eEdgeT );
-        // derive the second AND
-        eEdgeC.fCompl ^= 1;
-        eNode1 = Dec_GraphAddNodeAnd( pGraph, eEdgeC, eEdgeE );
-        // derive the final OR
-        eNode = Dec_GraphAddNodeOr( pGraph, eNode0, eNode1 );
-        eNode.fCompl ^= 1;
-    }
-    return eNode;
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/deco/module.make b/src/aig/deco/module.make
deleted file mode 100644
index d6d908e7..00000000
--- a/src/aig/deco/module.make
+++ /dev/null
@@ -1 +0,0 @@
-SRC += 
diff --git a/src/aig/fra/fra.h b/src/aig/fra/fra.h
deleted file mode 100644
index 210af244..00000000
--- a/src/aig/fra/fra.h
+++ /dev/null
@@ -1,300 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fra.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [[New FRAIG package.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fra.h,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __FRA_H__
-#define __FRA_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-
-#include "vec.h"
-#include "aig.h"
-#include "dar.h"
-#include "satSolver.h"
-#include "bar.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Fra_Par_t_   Fra_Par_t;
-typedef struct Fra_Man_t_   Fra_Man_t;
-typedef struct Fra_Cla_t_   Fra_Cla_t;
-typedef struct Fra_Sml_t_   Fra_Sml_t;
-typedef struct Fra_Bmc_t_   Fra_Bmc_t;
-
-// FRAIG parameters
-struct Fra_Par_t_
-{
-    int              nSimWords;         // the number of words in the simulation info
-    double           dSimSatur;         // the ratio of refined classes when saturation is reached
-    int              fPatScores;        // enables simulation pattern scoring
-    int              MaxScore;          // max score after which resimulation is used
-    double           dActConeRatio;     // the ratio of cone to be bumped
-    double           dActConeBumpMax;   // the largest bump in activity
-    int              fChoicing;         // enables choicing
-    int              fSpeculate;        // use speculative reduction
-    int              fProve;            // prove the miter outputs
-    int              fVerbose;          // verbose output
-    int              fDoSparse;         // skip sparse functions
-    int              fConeBias;         // bias variables in the cone (good for unsat runs)
-    int              nBTLimitNode;      // conflict limit at a node
-    int              nBTLimitMiter;     // conflict limit at an output
-    int              nFramesP;          // the number of timeframes to in the prefix
-    int              nFramesK;          // the number of timeframes to unroll
-    int              nMaxImps;          // the maximum number of implications to consider
-    int              fRewrite;          // use rewriting for constraint reduction
-    int              fLatchCorr;        // computes latch correspondence only
-    int              fUseImps;          // use implications
-    int              fWriteImps;        // record implications
-};
-
-// FRAIG equivalence classes
-struct Fra_Cla_t_
-{
-    Aig_Man_t *      pAig;              // the original AIG manager
-    Aig_Obj_t **     pMemRepr;          // pointers to representatives of each node
-    Vec_Ptr_t *      vClasses;          // equivalence classes
-    Vec_Ptr_t *      vClasses1;         // equivalence class of Const1 node
-    Vec_Ptr_t *      vClassesTemp;      // temporary storage for new classes
-    Aig_Obj_t **     pMemClasses;       // memory allocated for equivalence classes
-    Aig_Obj_t **     pMemClassesFree;   // memory allocated for equivalence classes to be used
-    Vec_Ptr_t *      vClassOld;         // old equivalence class after splitting
-    Vec_Ptr_t *      vClassNew;         // new equivalence class(es) after splitting
-    int              nPairs;            // the number of pairs of nodes
-    int              fRefinement;       // set to 1 when refinement has happened
-    Vec_Int_t *      vImps;             // implications
-    // procedures used for class refinement
-    int (*pFuncNodeHash)     (Aig_Obj_t *, int);         // returns has key of the node
-    int (*pFuncNodeIsConst)  (Aig_Obj_t *);              // returns 1 if the node is a constant
-    int (*pFuncNodesAreEqual)(Aig_Obj_t *, Aig_Obj_t *); // returns 1 if nodes are equal up to a complement
-};
-
-// simulation manager
-struct Fra_Sml_t_
-{
-    Aig_Man_t *      pAig;              // the original AIG manager
-    int              nPref;             // the number of times frames in the prefix
-    int              nFrames;           // the number of times frames 
-    int              nWordsFrame;       // the number of words in each time frame
-    int              nWordsTotal;       // the total number of words at a node
-    int              nWordsPref;        // the number of word in the prefix
-    int              fNonConstOut;      // have seen a non-const-0 output during simulation
-    int              nSimRounds;        // statistics
-    int              timeSim;           // statistics
-    unsigned         pData[0];          // simulation data for the nodes
-};
-
-// FRAIG manager
-struct Fra_Man_t_
-{
-    // high-level data    
-    Fra_Par_t *      pPars;             // parameters governing fraiging
-    // AIG managers
-    Aig_Man_t *      pManAig;           // the starting AIG manager
-    Aig_Man_t *      pManFraig;         // the final AIG manager
-    // mapping AIG into FRAIG
-    int              nFramesAll;        // the number of timeframes used
-    Aig_Obj_t **     pMemFraig;         // memory allocated for points to the fraig nodes
-    int              nSizeAlloc;        // allocated size of the arrays for timeframe nodes
-    // equivalence classes 
-    Fra_Cla_t *      pCla;              // representation of (candidate) equivalent nodes
-    // simulation info
-    Fra_Sml_t *      pSml;              // simulation manager
-    // bounded model checking manager
-    Fra_Bmc_t *      pBmc;
-    // counter example storage
-    int              nPatWords;         // the number of words in the counter example
-    unsigned *       pPatWords;         // the counter example
-    Vec_Int_t *      vCex;
-    // satisfiability solving
-    sat_solver *     pSat;              // SAT solver
-    int              nSatVars;          // the number of variables currently used
-    Vec_Ptr_t *      vPiVars;           // the PIs of the cone used 
-    sint64           nBTLimitGlobal;    // resource limit
-    sint64           nInsLimitGlobal;   // resource limit
-    Vec_Ptr_t **     pMemFanins;        // the arrays of fanins for some FRAIG nodes
-    int *            pMemSatNums;       // the array of SAT numbers for some FRAIG nodes
-    int              nMemAlloc;         // allocated size of the arrays for FRAIG varnums and fanins
-    Vec_Ptr_t *      vTimeouts;         // the nodes, for which equivalence checking timed out
-    // statistics
-    int              nSimRounds;
-    int              nNodesMiter;
-    int              nLitsBeg;
-    int              nLitsEnd;
-    int              nNodesBeg;
-    int              nNodesEnd;
-    int              nRegsBeg;
-    int              nRegsEnd;
-    int              nSatCalls;
-    int              nSatCallsSat;
-    int              nSatCallsUnsat;
-    int              nSatProof;
-    int              nSatFails;
-    int              nSatFailsReal;
-    int              nSpeculs;   
-    int              nChoices;
-    int              nChoicesFake;
-    int              nSatCallsRecent;
-    int              nSatCallsSkipped;
-    // runtime
-    int              timeSim;
-    int              timeTrav;
-    int              timeRwr;
-    int              timeSat;
-    int              timeSatUnsat;
-    int              timeSatSat;
-    int              timeSatFail;
-    int              timeRef;
-    int              timeTotal;
-    int              time1;
-    int              time2;
-};
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-static inline unsigned *   Fra_ObjSim( Fra_Sml_t * p, int Id )                           { return p->pData + p->nWordsTotal * Id; }
-static inline unsigned     Fra_ObjRandomSim()                                            { return (rand() << 24) ^ (rand() << 12) ^ rand();                                                   }
-
-static inline Aig_Obj_t *  Fra_ObjFraig( Aig_Obj_t * pObj, int i )                       { return ((Fra_Man_t *)pObj->pData)->pMemFraig[((Fra_Man_t *)pObj->pData)->nFramesAll*pObj->Id + i];  }
-static inline void         Fra_ObjSetFraig( Aig_Obj_t * pObj, int i, Aig_Obj_t * pNode ) { ((Fra_Man_t *)pObj->pData)->pMemFraig[((Fra_Man_t *)pObj->pData)->nFramesAll*pObj->Id + i] = pNode; }
-
-static inline Vec_Ptr_t *  Fra_ObjFaninVec( Aig_Obj_t * pObj )                           { return ((Fra_Man_t *)pObj->pData)->pMemFanins[pObj->Id];      }
-static inline void         Fra_ObjSetFaninVec( Aig_Obj_t * pObj, Vec_Ptr_t * vFanins )   { ((Fra_Man_t *)pObj->pData)->pMemFanins[pObj->Id] = vFanins;   }
-
-static inline int          Fra_ObjSatNum( Aig_Obj_t * pObj )                             { return ((Fra_Man_t *)pObj->pData)->pMemSatNums[pObj->Id];     }
-static inline void         Fra_ObjSetSatNum( Aig_Obj_t * pObj, int Num )                 { ((Fra_Man_t *)pObj->pData)->pMemSatNums[pObj->Id] = Num;      }
-
-static inline Aig_Obj_t *  Fra_ClassObjRepr( Aig_Obj_t * pObj )                          { return ((Fra_Man_t *)pObj->pData)->pCla->pMemRepr[pObj->Id];  }
-static inline void         Fra_ClassObjSetRepr( Aig_Obj_t * pObj, Aig_Obj_t * pNode )    { ((Fra_Man_t *)pObj->pData)->pCla->pMemRepr[pObj->Id] = pNode; }
-
-static inline Aig_Obj_t *  Fra_ObjChild0Fra( Aig_Obj_t * pObj, int i ) { assert( !Aig_IsComplement(pObj) ); return Aig_ObjFanin0(pObj)? Aig_NotCond(Fra_ObjFraig(Aig_ObjFanin0(pObj),i), Aig_ObjFaninC0(pObj)) : NULL;  }
-static inline Aig_Obj_t *  Fra_ObjChild1Fra( Aig_Obj_t * pObj, int i ) { assert( !Aig_IsComplement(pObj) ); return Aig_ObjFanin1(pObj)? Aig_NotCond(Fra_ObjFraig(Aig_ObjFanin1(pObj),i), Aig_ObjFaninC1(pObj)) : NULL;  }
-
-static inline int          Fra_ImpLeft( int Imp )                                        { return Imp & 0xFFFF;         }
-static inline int          Fra_ImpRight( int Imp )                                       { return Imp >> 16;            }
-static inline int          Fra_ImpCreate( int Left, int Right )                          { return (Right << 16) | Left; }
-
-////////////////////////////////////////////////////////////////////////
-///                         ITERATORS                                ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== fraClass.c ========================================================*/
-extern int                 Fra_BmcNodeIsConst( Aig_Obj_t * pObj );
-extern int                 Fra_BmcNodesAreEqual( Aig_Obj_t * pObj0, Aig_Obj_t * pObj1 );
-extern void                Fra_BmcStop( Fra_Bmc_t * p );
-extern void                Fra_BmcPerform( Fra_Man_t * p, int nPref, int nDepth );
-/*=== fraClass.c ========================================================*/
-extern Fra_Cla_t *         Fra_ClassesStart( Aig_Man_t * pAig );
-extern void                Fra_ClassesStop( Fra_Cla_t * p );
-extern void                Fra_ClassesCopyReprs( Fra_Cla_t * p, Vec_Ptr_t * vFailed );
-extern void                Fra_ClassesPrint( Fra_Cla_t * p, int fVeryVerbose );
-extern void                Fra_ClassesPrepare( Fra_Cla_t * p, int fLatchCorr );
-extern int                 Fra_ClassesRefine( Fra_Cla_t * p );
-extern int                 Fra_ClassesRefine1( Fra_Cla_t * p, int fRefineNewClass, int * pSkipped );
-extern int                 Fra_ClassesCountLits( Fra_Cla_t * p );
-extern int                 Fra_ClassesCountPairs( Fra_Cla_t * p );
-extern void                Fra_ClassesTest( Fra_Cla_t * p, int Id1, int Id2 );
-extern void                Fra_ClassesLatchCorr( Fra_Man_t * p );
-extern void                Fra_ClassesPostprocess( Fra_Cla_t * p );
-extern void                Fra_ClassesSelectRepr( Fra_Cla_t * p );
-extern Aig_Man_t *         Fra_ClassesDeriveAig( Fra_Cla_t * p, int nFramesK );
-/*=== fraCnf.c ========================================================*/
-extern void                Fra_CnfNodeAddToSolver( Fra_Man_t * p, Aig_Obj_t * pOld, Aig_Obj_t * pNew );
-/*=== fraCore.c ========================================================*/
-extern void                Fra_FraigSweep( Fra_Man_t * pManAig );
-extern int                 Fra_FraigMiterStatus( Aig_Man_t * p );
-extern Aig_Man_t *         Fra_FraigPerform( Aig_Man_t * pManAig, Fra_Par_t * pPars );
-extern Aig_Man_t *         Fra_FraigChoice( Aig_Man_t * pManAig, int nConfMax );
-extern Aig_Man_t *         Fra_FraigEquivence( Aig_Man_t * pManAig, int nConfMax );
-/*=== fraImp.c ========================================================*/
-extern Vec_Int_t *         Fra_ImpDerive( Fra_Man_t * p, int nImpMaxLimit, int nImpUseLimit, int fLatchCorr );
-extern void                Fra_ImpAddToSolver( Fra_Man_t * p, Vec_Int_t * vImps, int * pSatVarNums );
-extern int                 Fra_ImpCheckForNode( Fra_Man_t * p, Vec_Int_t * vImps, Aig_Obj_t * pNode, int Pos );
-extern int                 Fra_ImpRefineUsingCex( Fra_Man_t * p, Vec_Int_t * vImps );
-extern void                Fra_ImpCompactArray( Vec_Int_t * vImps );
-extern double              Fra_ImpComputeStateSpaceRatio( Fra_Man_t * p );
-extern int                 Fra_ImpVerifyUsingSimulation( Fra_Man_t * p );
-extern void                Fra_ImpRecordInManager( Fra_Man_t * p, Aig_Man_t * pNew );
-/*=== fraInd.c ========================================================*/
-extern Aig_Man_t *         Fra_FraigInduction( Aig_Man_t * p, int nFramesP, int nFramesK, int nMaxImps, int fRewrite, int fUseImps, int fLatchCorr, int fWriteImps, int fVerbose, int * pnIter );
-/*=== fraLcr.c ========================================================*/
-extern Aig_Man_t *         Fra_FraigLatchCorrespondence( Aig_Man_t * pAig, int nFramesP, int nConfMax, int fProve, int fVerbose, int * pnIter );
-/*=== fraMan.c ========================================================*/
-extern void                Fra_ParamsDefault( Fra_Par_t * pParams );
-extern void                Fra_ParamsDefaultSeq( Fra_Par_t * pParams );
-extern Fra_Man_t *         Fra_ManStart( Aig_Man_t * pManAig, Fra_Par_t * pParams );
-extern void                Fra_ManClean( Fra_Man_t * p, int nNodesMax );
-extern Aig_Man_t *         Fra_ManPrepareComb( Fra_Man_t * p );
-extern void                Fra_ManFinalizeComb( Fra_Man_t * p );
-extern void                Fra_ManStop( Fra_Man_t * p );
-extern void                Fra_ManPrint( Fra_Man_t * p );
-/*=== fraSat.c ========================================================*/
-extern int                 Fra_NodesAreEquiv( Fra_Man_t * p, Aig_Obj_t * pOld, Aig_Obj_t * pNew );
-extern int                 Fra_NodesAreImp( Fra_Man_t * p, Aig_Obj_t * pOld, Aig_Obj_t * pNew, int fComplL, int fComplR );
-extern int                 Fra_NodeIsConst( Fra_Man_t * p, Aig_Obj_t * pNew );
-/*=== fraSec.c ========================================================*/
-extern int                 Fra_FraigSec( Aig_Man_t * p, int nFrames, int fRetimeFirst, int fVerbose, int fVeryVerbose );
-/*=== fraSim.c ========================================================*/
-extern int                 Fra_SmlNodeHash( Aig_Obj_t * pObj, int nTableSize );
-extern int                 Fra_SmlNodeIsConst( Aig_Obj_t * pObj );
-extern int                 Fra_SmlNodesAreEqual( Aig_Obj_t * pObj0, Aig_Obj_t * pObj1 );
-extern int                 Fra_SmlNodeNotEquWeight( Fra_Sml_t * p, int Left, int Right );
-extern int                 Fra_SmlCheckOutput( Fra_Man_t * p );
-extern void                Fra_SmlSavePattern( Fra_Man_t * p );
-extern void                Fra_SmlSimulate( Fra_Man_t * p, int fInit );
-extern void                Fra_SmlResimulate( Fra_Man_t * p );
-extern Fra_Sml_t *         Fra_SmlStart( Aig_Man_t * pAig, int nPref, int nFrames, int nWordsFrame );
-extern void                Fra_SmlStop( Fra_Sml_t * p );
-extern Fra_Sml_t *         Fra_SmlSimulateSeq( Aig_Man_t * pAig, int nPref, int nFrames, int nWords );
-extern Fra_Sml_t *         Fra_SmlSimulateComb( Aig_Man_t * pAig, int nWords );
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/fra/fraBmc.c b/src/aig/fra/fraBmc.c
deleted file mode 100644
index 1140f3a4..00000000
--- a/src/aig/fra/fraBmc.c
+++ /dev/null
@@ -1,362 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraBmc.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    [Bounded model checking.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraBmc.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// simulation manager
-struct Fra_Bmc_t_
-{
-    // parameters
-    int              nPref;             // the size of the prefix
-    int              nDepth;            // the depth of the frames
-    int              nFramesAll;        // the total number of timeframes
-    // implications to be filtered
-    Vec_Int_t *      vImps;
-    // AIG managers
-    Aig_Man_t *      pAig;              // the original AIG manager
-    Aig_Man_t *      pAigFrames;        // initialized timeframes
-    Aig_Man_t *      pAigFraig;         // the fraiged initialized timeframes
-    // mapping of nodes
-    Aig_Obj_t **     pObjToFrames;      // mapping of the original node into frames
-    Aig_Obj_t **     pObjToFraig;       // mapping of the frames node into fraig
-};
-
-static inline Aig_Obj_t *  Bmc_ObjFrames( Aig_Obj_t * pObj, int i )                       { return ((Fra_Man_t *)pObj->pData)->pBmc->pObjToFrames[((Fra_Man_t *)pObj->pData)->pBmc->nFramesAll*pObj->Id + i];  }
-static inline void         Bmc_ObjSetFrames( Aig_Obj_t * pObj, int i, Aig_Obj_t * pNode ) { ((Fra_Man_t *)pObj->pData)->pBmc->pObjToFrames[((Fra_Man_t *)pObj->pData)->pBmc->nFramesAll*pObj->Id + i] = pNode; }
-
-static inline Aig_Obj_t *  Bmc_ObjFraig( Aig_Obj_t * pObj )                               { return ((Fra_Man_t *)pObj->pData)->pBmc->pObjToFraig[pObj->Id];  }
-static inline void         Bmc_ObjSetFraig( Aig_Obj_t * pObj, Aig_Obj_t * pNode )         { ((Fra_Man_t *)pObj->pData)->pBmc->pObjToFraig[pObj->Id] = pNode; }
-
-static inline Aig_Obj_t *  Bmc_ObjChild0Frames( Aig_Obj_t * pObj, int i ) { assert( !Aig_IsComplement(pObj) ); return Aig_ObjFanin0(pObj)? Aig_NotCond(Bmc_ObjFrames(Aig_ObjFanin0(pObj),i), Aig_ObjFaninC0(pObj)) : NULL;  }
-static inline Aig_Obj_t *  Bmc_ObjChild1Frames( Aig_Obj_t * pObj, int i ) { assert( !Aig_IsComplement(pObj) ); return Aig_ObjFanin1(pObj)? Aig_NotCond(Bmc_ObjFrames(Aig_ObjFanin1(pObj),i), Aig_ObjFaninC1(pObj)) : NULL;  }
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the nodes are equivalent.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_BmcNodesAreEqual( Aig_Obj_t * pObj0, Aig_Obj_t * pObj1 )
-{
-    Fra_Man_t * p = pObj0->pData;
-    Aig_Obj_t * pObjFrames0, * pObjFrames1;
-    Aig_Obj_t * pObjFraig0, * pObjFraig1;
-    int i;
-    for ( i = p->pBmc->nPref; i < p->pBmc->nFramesAll; i++ )
-    {
-        pObjFrames0 = Aig_Regular( Bmc_ObjFrames(pObj0, i) );
-        pObjFrames1 = Aig_Regular( Bmc_ObjFrames(pObj1, i) );
-        if ( pObjFrames0 == pObjFrames1 )
-            continue;
-        pObjFraig0 = Aig_Regular( Bmc_ObjFraig(pObjFrames0) );
-        pObjFraig1 = Aig_Regular( Bmc_ObjFraig(pObjFrames1) );
-        if ( pObjFraig0 != pObjFraig1 )
-            return 0;
-    }
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the node is costant.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_BmcNodeIsConst( Aig_Obj_t * pObj )
-{
-    Fra_Man_t * p = pObj->pData;
-    return Fra_BmcNodesAreEqual( pObj, Aig_ManConst1(p->pManAig) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Refines implications using BMC.]
-
-  Description [The input is the combinational FRAIG manager,
-  which is used to FRAIG the timeframes. ]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_BmcFilterImplications( Fra_Man_t * p, Fra_Bmc_t * pBmc )
-{
-    Aig_Obj_t * pLeft, * pRight;
-    Aig_Obj_t * pLeftT, * pRightT;
-    Aig_Obj_t * pLeftF, * pRightF;
-    int i, f, Imp, Left, Right;
-    int fComplL, fComplR;
-    assert( p->nFramesAll == 1 );
-    assert( p->pManAig == pBmc->pAigFrames );
-    Vec_IntForEachEntry( pBmc->vImps, Imp, i )
-    {
-        if ( Imp == 0 )
-            continue;
-        Left  = Fra_ImpLeft(Imp);
-        Right = Fra_ImpRight(Imp);
-        // get the corresponding nodes
-        pLeft  = Aig_ManObj( pBmc->pAig, Left );
-        pRight = Aig_ManObj( pBmc->pAig, Right );
-        // iterate through the timeframes
-        for ( f = pBmc->nPref; f < pBmc->nFramesAll; f++ )
-        {
-            // get timeframe nodes
-            pLeftT  = Bmc_ObjFrames( pLeft, f );
-            pRightT = Bmc_ObjFrames( pRight, f );
-            // get the corresponding FRAIG nodes
-            pLeftF  = Fra_ObjFraig( Aig_Regular(pLeftT), 0 );
-            pRightF = Fra_ObjFraig( Aig_Regular(pRightT), 0 );
-            // get the complemented attributes
-            fComplL = pLeft->fPhase ^ Aig_IsComplement(pLeftF) ^ Aig_IsComplement(pLeftT);
-            fComplR = pRight->fPhase ^ Aig_IsComplement(pRightF) ^ Aig_IsComplement(pRightT);
-            // check equality
-            if ( Aig_Regular(pLeftF) == Aig_Regular(pRightF) )
-            {
-                if ( fComplL == fComplR ) // x => x  - always true
-                    continue;
-                assert( fComplL != fComplR );
-                // consider 4 possibilities:
-                // NOT(1) => 1    or   0 => 1  - always true
-                // 1 => NOT(1)    or   1 => 0  - never true
-                // NOT(x) => x    or   x       - not always true
-                // x => NOT(x)    or   NOT(x)  - not always true
-                if ( Aig_ObjIsConst1(Aig_Regular(pLeftF)) && fComplL ) // proved implication
-                    continue;
-                // disproved implication
-                Vec_IntWriteEntry( pBmc->vImps, i, 0 ); 
-                break;
-            }
-            // check the implication 
-            if ( Fra_NodesAreImp( p, Aig_Regular(pLeftF), Aig_Regular(pRightF), fComplL, fComplR ) != 1 )
-            {
-                Vec_IntWriteEntry( pBmc->vImps, i, 0 );
-                break;
-            }
-        }
-    }
-    Fra_ImpCompactArray( pBmc->vImps );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the BMC manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Fra_Bmc_t * Fra_BmcStart( Aig_Man_t * pAig, int nPref, int nDepth )
-{
-    Fra_Bmc_t * p;
-    p = ALLOC( Fra_Bmc_t, 1 );
-    memset( p, 0, sizeof(Fra_Bmc_t) );
-    p->pAig = pAig;
-    p->nPref = nPref;
-    p->nDepth = nDepth;
-    p->nFramesAll = nPref + nDepth;
-    p->pObjToFrames  = ALLOC( Aig_Obj_t *, p->nFramesAll * Aig_ManObjNumMax(pAig) );
-    memset( p->pObjToFrames, 0, sizeof(Aig_Obj_t *) * p->nFramesAll * Aig_ManObjNumMax(pAig) );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the BMC manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_BmcStop( Fra_Bmc_t * p )
-{
-    Aig_ManStop( p->pAigFrames );
-    Aig_ManStop( p->pAigFraig );
-    free( p->pObjToFrames );
-    free( p->pObjToFraig );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Constructs initialized timeframes of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_BmcFrames( Fra_Bmc_t * p )
-{
-    Aig_Man_t * pAigFrames;
-    Aig_Obj_t * pObj, * pObjNew;
-    Aig_Obj_t ** pLatches;
-    int i, k, f;
-
-    // start the fraig package
-    pAigFrames = Aig_ManStart( Aig_ManObjNumMax(p->pAig) * p->nFramesAll );
-    pAigFrames->pName = Aig_UtilStrsav( p->pAig->pName );
-    // create PI nodes for the frames
-    for ( f = 0; f < p->nFramesAll; f++ )
-        Bmc_ObjSetFrames( Aig_ManConst1(p->pAig), f, Aig_ManConst1(pAigFrames) );
-    for ( f = 0; f < p->nFramesAll; f++ )
-        Aig_ManForEachPiSeq( p->pAig, pObj, i )
-            Bmc_ObjSetFrames( pObj, f, Aig_ObjCreatePi(pAigFrames) );
-    // set initial state for the latches
-    Aig_ManForEachLoSeq( p->pAig, pObj, i )
-        Bmc_ObjSetFrames( pObj, 0, Aig_ManConst0(pAigFrames) );
-
-    // add timeframes
-    pLatches = ALLOC( Aig_Obj_t *, Aig_ManRegNum(p->pAig) );
-    for ( f = 0; f < p->nFramesAll; f++ )
-    {
-        // add internal nodes of this frame
-        Aig_ManForEachNode( p->pAig, pObj, i )
-        {
-            pObjNew = Aig_And( pAigFrames, Bmc_ObjChild0Frames(pObj,f), Bmc_ObjChild1Frames(pObj,f) );
-            Bmc_ObjSetFrames( pObj, f, pObjNew );
-        }
-        if ( f == p->nFramesAll - 1 )
-            break;
-        // save the latch input values
-        k = 0;
-        Aig_ManForEachLiSeq( p->pAig, pObj, i )
-            pLatches[k++] = Bmc_ObjChild0Frames(pObj,f);
-        assert( k == Aig_ManRegNum(p->pAig) );
-        // insert them to the latch output values
-        k = 0;
-        Aig_ManForEachLoSeq( p->pAig, pObj, i )
-            Bmc_ObjSetFrames( pObj, f+1, pLatches[k++] );
-        assert( k == Aig_ManRegNum(p->pAig) );
-    }
-    free( pLatches );
-    // add POs to all the dangling nodes
-    Aig_ManForEachObj( pAigFrames, pObjNew, i )
-        if ( Aig_ObjIsNode(pObjNew) && pObjNew->nRefs == 0 )
-            Aig_ObjCreatePo( pAigFrames, pObjNew );
-
-    // return the new manager
-    return pAigFrames;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs BMC for the given AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_BmcPerform( Fra_Man_t * p, int nPref, int nDepth )
-{
-    Aig_Obj_t * pObj;
-    int i, nImpsOld, clk = clock();
-    assert( p->pBmc == NULL );
-    // derive and fraig the frames
-    p->pBmc = Fra_BmcStart( p->pManAig, nPref, nDepth );
-    p->pBmc->pAigFrames = Fra_BmcFrames( p->pBmc );
-    // if implications are present, configure the AIG manager to check them
-    if ( p->pCla->vImps )
-    {
-        p->pBmc->pAigFrames->pImpFunc = Fra_BmcFilterImplications;
-        p->pBmc->pAigFrames->pImpData = p->pBmc;
-        p->pBmc->vImps = p->pCla->vImps;
-        nImpsOld = Vec_IntSize(p->pCla->vImps);
-    } 
-    p->pBmc->pAigFraig = Fra_FraigEquivence( p->pBmc->pAigFrames, 1000000 );
-    p->pBmc->pObjToFraig = p->pBmc->pAigFrames->pObjCopies;
-    p->pBmc->pAigFrames->pObjCopies = NULL;
-    // annotate frames nodes with pointers to the manager
-    Aig_ManForEachObj( p->pBmc->pAigFrames, pObj, i )
-        pObj->pData = p;
-    // report the results
-    if ( p->pPars->fVerbose )
-    {
-        printf( "Original AIG = %d. Init %d frames = %d. Fraig = %d.  ", 
-            Aig_ManNodeNum(p->pBmc->pAig), p->pBmc->nFramesAll, 
-            Aig_ManNodeNum(p->pBmc->pAigFrames), Aig_ManNodeNum(p->pBmc->pAigFraig) );
-        PRT( "Time", clock() - clk );
-        printf( "Before BMC: " );  
-//        Fra_ClassesPrint( p->pCla, 0 );
-        printf( "Const = %5d. Class = %5d. Lit = %5d. ", 
-            Vec_PtrSize(p->pCla->vClasses1), Vec_PtrSize(p->pCla->vClasses), Fra_ClassesCountLits(p->pCla) );
-        if ( p->pCla->vImps )
-            printf( "Imp = %5d. ", nImpsOld );
-        printf( "\n" );
-    }
-    // refine the classes
-    p->pCla->pFuncNodeIsConst   = Fra_BmcNodeIsConst;
-    p->pCla->pFuncNodesAreEqual = Fra_BmcNodesAreEqual;
-    Fra_ClassesRefine( p->pCla );
-    Fra_ClassesRefine1( p->pCla, 1, NULL );
-    p->pCla->pFuncNodeIsConst   = Fra_SmlNodeIsConst;
-    p->pCla->pFuncNodesAreEqual = Fra_SmlNodesAreEqual;
-    // report the results
-    if ( p->pPars->fVerbose )
-    {
-        printf( "After  BMC: " );  
-//        Fra_ClassesPrint( p->pCla, 0 );
-        printf( "Const = %5d. Class = %5d. Lit = %5d. ", 
-            Vec_PtrSize(p->pCla->vClasses1), Vec_PtrSize(p->pCla->vClasses), Fra_ClassesCountLits(p->pCla) );
-        if ( p->pCla->vImps )
-            printf( "Imp = %5d. ", Vec_IntSize(p->pCla->vImps) );
-        printf( "\n" );
-    }
-    // free the BMC manager
-    Fra_BmcStop( p->pBmc );  
-    p->pBmc = NULL;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraCec.c b/src/aig/fra/fraCec.c
deleted file mode 100644
index e705f4fc..00000000
--- a/src/aig/fra/fraCec.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraCec.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    [CEC engined based on fraiging.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraCec.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraClass.c b/src/aig/fra/fraClass.c
deleted file mode 100644
index a03fa6e5..00000000
--- a/src/aig/fra/fraClass.c
+++ /dev/null
@@ -1,854 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraClass.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraClass.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-/*
-    The candidate equivalence classes are stored as a vector of pointers 
-    to the array of pointers to the nodes in each class.
-    The first node of the class is its representative node.
-    The representative has the smallest topological order among the class nodes.
-    The nodes inside each class are ordered according to their topological order.
-    The classes are ordered according to the topological order of their representatives.
-    The array of pointers to the class nodes is terminated with a NULL pointer.
-    To enable dynamic addition of new classes (during class refinement),
-    each array has at least as many NULLs in the end, as there are nodes in the class.
-*/
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static inline Aig_Obj_t *  Fra_ObjNext( Aig_Obj_t ** ppNexts, Aig_Obj_t * pObj )                       { return ppNexts[pObj->Id];  }
-static inline void         Fra_ObjSetNext( Aig_Obj_t ** ppNexts, Aig_Obj_t * pObj, Aig_Obj_t * pNext ) { ppNexts[pObj->Id] = pNext; }
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts representation of equivalence classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Fra_Cla_t * Fra_ClassesStart( Aig_Man_t * pAig )
-{
-    Fra_Cla_t * p;
-    p = ALLOC( Fra_Cla_t, 1 );
-    memset( p, 0, sizeof(Fra_Cla_t) );
-    p->pAig = pAig;
-    p->pMemRepr  = ALLOC( Aig_Obj_t *, Aig_ManObjNumMax(pAig) );
-    memset( p->pMemRepr, 0, sizeof(Aig_Obj_t *) * Aig_ManObjNumMax(pAig) );
-    p->vClasses     = Vec_PtrAlloc( 100 );
-    p->vClasses1    = Vec_PtrAlloc( 100 );
-    p->vClassesTemp = Vec_PtrAlloc( 100 );
-    p->vClassOld    = Vec_PtrAlloc( 100 );
-    p->vClassNew    = Vec_PtrAlloc( 100 );
-    p->pFuncNodeHash      = Fra_SmlNodeHash;
-    p->pFuncNodeIsConst   = Fra_SmlNodeIsConst;
-    p->pFuncNodesAreEqual = Fra_SmlNodesAreEqual;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stop representation of equivalence classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassesStop( Fra_Cla_t * p )
-{
-    FREE( p->pMemClasses );
-    FREE( p->pMemRepr );
-    if ( p->vClassesTemp ) Vec_PtrFree( p->vClassesTemp );
-    if ( p->vClassNew )    Vec_PtrFree( p->vClassNew );
-    if ( p->vClassOld )    Vec_PtrFree( p->vClassOld );
-    if ( p->vClasses1 )    Vec_PtrFree( p->vClasses1 );
-    if ( p->vClasses )     Vec_PtrFree( p->vClasses );
-    if ( p->vImps )        Vec_IntFree( p->vImps );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts representation of equivalence classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassesCopyReprs( Fra_Cla_t * p, Vec_Ptr_t * vFailed )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManReprStart( p->pAig, Aig_ManObjNumMax(p->pAig) );
-    memmove( p->pAig->pReprs, p->pMemRepr, sizeof(Aig_Obj_t *) * Aig_ManObjNumMax(p->pAig) );
-    if ( Vec_PtrSize(p->vClasses1) == 0 && Vec_PtrSize(p->vClasses) == 0 )
-    {
-        Aig_ManForEachObj( p->pAig, pObj, i )
-        {
-            if ( p->pAig->pReprs[i] != NULL )
-                printf( "Classes are not cleared!\n" );
-            assert( p->pAig->pReprs[i] == NULL );
-        }
-    }
-    if ( vFailed )
-        Vec_PtrForEachEntry( vFailed, pObj, i )
-            p->pAig->pReprs[pObj->Id] = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints simulation classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_ClassCount( Aig_Obj_t ** pClass )
-{
-    Aig_Obj_t * pTemp;
-    int i;
-    for ( i = 0; pTemp = pClass[i]; i++ );
-    return i;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Count the number of literals.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_ClassesCountLits( Fra_Cla_t * p )
-{
-    Aig_Obj_t ** pClass;
-    int i, nNodes, nLits = 0;
-    nLits = Vec_PtrSize( p->vClasses1 );
-    Vec_PtrForEachEntry( p->vClasses, pClass, i )
-    {
-        nNodes = Fra_ClassCount( pClass );
-        assert( nNodes > 1 );
-        nLits += nNodes - 1;
-    }
-    return nLits;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Count the number of pairs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_ClassesCountPairs( Fra_Cla_t * p )
-{
-    Aig_Obj_t ** pClass;
-    int i, nNodes, nPairs = 0;
-    Vec_PtrForEachEntry( p->vClasses, pClass, i )
-    {
-        nNodes = Fra_ClassCount( pClass );
-        assert( nNodes > 1 );
-        nPairs += nNodes * (nNodes - 1) / 2;
-    }
-    return nPairs;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints simulation classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_PrintClass( Aig_Obj_t ** pClass )
-{
-    Aig_Obj_t * pTemp;
-    int i;
-    for ( i = 1; pTemp = pClass[i]; i++ )
-        assert( Fra_ClassObjRepr(pTemp) == pClass[0] );
-    printf( "{ " );
-    for ( i = 0; pTemp = pClass[i]; i++ )
-        printf( "%d(%d) ", pTemp->Id, pTemp->Level );
-    printf( "}\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints simulation classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassesPrint( Fra_Cla_t * p, int fVeryVerbose )
-{
-    Aig_Obj_t ** pClass;
-    Aig_Obj_t * pObj;
-    int i;
-
-    printf( "Const = %5d. Class = %5d. Lit = %5d. ", 
-        Vec_PtrSize(p->vClasses1), Vec_PtrSize(p->vClasses), Fra_ClassesCountLits(p) );
-    if ( p->vImps && Vec_IntSize(p->vImps) > 0 )
-        printf( "Imp = %5d. ", Vec_IntSize(p->vImps) );
-    printf( "\n" );
-
-    if ( fVeryVerbose )
-    {
-        Vec_PtrForEachEntry( p->vClasses1, pObj, i )
-            assert( Fra_ClassObjRepr(pObj) == Aig_ManConst1(p->pAig) );
-        printf( "Constants { " );
-        Vec_PtrForEachEntry( p->vClasses1, pObj, i )
-            printf( "%d ", pObj->Id );
-        printf( "}\n" );
-        Vec_PtrForEachEntry( p->vClasses, pClass, i )
-        {
-            printf( "%3d (%3d) : ", i, Fra_ClassCount(pClass) );
-            Fra_PrintClass( pClass );
-        }
-        printf( "\n" );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates initial simulation classes.]
-
-  Description [Assumes that simulation info is assigned.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassesPrepare( Fra_Cla_t * p, int fLatchCorr )
-{
-    Aig_Obj_t ** ppTable, ** ppNexts;
-    Aig_Obj_t * pObj, * pTemp;
-    int i, k, nTableSize, nEntries, nNodes, iEntry;
-
-    // allocate the hash table hashing simulation info into nodes
-    nTableSize = Aig_PrimeCudd( Aig_ManObjNumMax(p->pAig) );
-    ppTable = ALLOC( Aig_Obj_t *, nTableSize ); 
-    ppNexts = ALLOC( Aig_Obj_t *, nTableSize ); 
-    memset( ppTable, 0, sizeof(Aig_Obj_t *) * nTableSize );
-
-    // add all the nodes to the hash table
-    Vec_PtrClear( p->vClasses1 );
-    Aig_ManForEachObj( p->pAig, pObj, i )
-    {
-        if ( fLatchCorr )
-        {
-            if ( !Aig_ObjIsPi(pObj) )
-                continue;
-        }
-        else
-        {
-            if ( !Aig_ObjIsNode(pObj) && !Aig_ObjIsPi(pObj) )
-                continue;
-            // skip the node with more that the given number of levels
-//            if ( pObj->Level > 3 )
-//                continue;
-        }
-        // hash the node by its simulation info
-        iEntry = p->pFuncNodeHash( pObj, nTableSize );
-        // check if the node belongs to the class of constant 1
-        if ( p->pFuncNodeIsConst( pObj ) )
-        {
-            Vec_PtrPush( p->vClasses1, pObj );
-            Fra_ClassObjSetRepr( pObj, Aig_ManConst1(p->pAig) );
-            continue;
-        }
-        // add the node to the class
-        if ( ppTable[iEntry] == NULL )
-        {
-            ppTable[iEntry] = pObj;
-            Fra_ObjSetNext( ppNexts, pObj, pObj );
-        }
-        else
-        {
-            Fra_ObjSetNext( ppNexts, pObj, Fra_ObjNext(ppNexts,ppTable[iEntry]) );
-            Fra_ObjSetNext( ppNexts, ppTable[iEntry], pObj );
-        }
-    }
-
-    // count the total number of nodes in the non-trivial classes
-    // mark the representative nodes of each equivalence class
-    nEntries = 0;
-    for ( i = 0; i < nTableSize; i++ )
-        if ( ppTable[i] && ppTable[i] != Fra_ObjNext(ppNexts, ppTable[i]) )
-        {
-            for ( pTemp = Fra_ObjNext(ppNexts, ppTable[i]), k = 1; 
-                  pTemp != ppTable[i]; 
-                  pTemp = Fra_ObjNext(ppNexts, pTemp), k++ );
-            assert( k > 1 );
-            nEntries += k;
-            // mark the node
-            assert( ppTable[i]->fMarkA == 0 );
-            ppTable[i]->fMarkA = 1;
-        }
-
-    // allocate room for classes
-    p->pMemClasses = ALLOC( Aig_Obj_t *, 2*(nEntries + Vec_PtrSize(p->vClasses1)) );
-    p->pMemClassesFree = p->pMemClasses + 2*nEntries;
- 
-    // copy the entries into storage in the topological order
-    Vec_PtrClear( p->vClasses );
-    nEntries = 0;
-    Aig_ManForEachObj( p->pAig, pObj, i )
-    {
-        if ( !Aig_ObjIsNode(pObj) && !Aig_ObjIsPi(pObj) )
-            continue;
-        // skip the nodes that are not representatives of non-trivial classes
-        if ( pObj->fMarkA == 0 )
-            continue;
-        pObj->fMarkA = 0;
-        // add the class of nodes
-        Vec_PtrPush( p->vClasses, p->pMemClasses + 2*nEntries );
-        // count the number of entries in this class
-        for ( pTemp = Fra_ObjNext(ppNexts, pObj), k = 1; 
-              pTemp != pObj; 
-              pTemp = Fra_ObjNext(ppNexts, pTemp), k++ );
-        nNodes = k;
-        assert( nNodes > 1 );
-        // add the nodes to the class in the topological order
-        p->pMemClasses[2*nEntries] = pObj;
-        for ( pTemp = Fra_ObjNext(ppNexts, pObj), k = 1; 
-              pTemp != pObj; 
-              pTemp = Fra_ObjNext(ppNexts, pTemp), k++ )
-        {
-            p->pMemClasses[2*nEntries+nNodes-k] = pTemp;
-            Fra_ClassObjSetRepr( pTemp, pObj );
-        }
-        // add as many empty entries
-        p->pMemClasses[2*nEntries + nNodes] = NULL;
-        // increment the number of entries
-        nEntries += k;
-    }
-    free( ppTable );
-    free( ppNexts );
-    // now it is time to refine the classes
-    Fra_ClassesRefine( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Refines one class using simulation info.]
-
-  Description [Returns the new class if refinement happened.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t ** Fra_RefineClassOne( Fra_Cla_t * p, Aig_Obj_t ** ppClass )
-{
-    Aig_Obj_t * pObj, ** ppThis;
-    int i;
-    assert( ppClass[0] != NULL && ppClass[1] != NULL );
-
-    // check if the class is going to be refined
-    for ( ppThis = ppClass + 1; pObj = *ppThis; ppThis++ )        
-        if ( !p->pFuncNodesAreEqual(ppClass[0], pObj) )
-            break;
-    if ( pObj == NULL )
-        return NULL;
-    // split the class
-    Vec_PtrClear( p->vClassOld );
-    Vec_PtrClear( p->vClassNew );
-    Vec_PtrPush( p->vClassOld, ppClass[0] );
-    for ( ppThis = ppClass + 1; pObj = *ppThis; ppThis++ )        
-        if ( p->pFuncNodesAreEqual(ppClass[0], pObj) )
-            Vec_PtrPush( p->vClassOld, pObj );
-        else
-            Vec_PtrPush( p->vClassNew, pObj );
-/*
-    printf( "Refining class (" );
-    Vec_PtrForEachEntry( p->vClassOld, pObj, i )
-        printf( "%d,", pObj->Id );
-    printf( ") + (" );
-    Vec_PtrForEachEntry( p->vClassNew, pObj, i )
-        printf( "%d,", pObj->Id );
-    printf( ")\n" );
-*/
-    // put the nodes back into the class memory
-    Vec_PtrForEachEntry( p->vClassOld, pObj, i )
-    {
-        ppClass[i] = pObj;
-        ppClass[Vec_PtrSize(p->vClassOld)+i] = NULL;
-        Fra_ClassObjSetRepr( pObj, i? ppClass[0] : NULL );
-    }
-    ppClass += 2*Vec_PtrSize(p->vClassOld);
-    // put the new nodes into the class memory
-    Vec_PtrForEachEntry( p->vClassNew, pObj, i )
-    {
-        ppClass[i] = pObj;
-        ppClass[Vec_PtrSize(p->vClassNew)+i] = NULL;
-        Fra_ClassObjSetRepr( pObj, i? ppClass[0] : NULL );
-    }
-    return ppClass;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Iteratively refines the classes after simulation.]
-
-  Description [Returns the number of refinements performed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_RefineClassLastIter( Fra_Cla_t * p, Vec_Ptr_t * vClasses )
-{
-    Aig_Obj_t ** pClass, ** pClass2;
-    int nRefis;
-    pClass = Vec_PtrEntryLast( vClasses );
-    for ( nRefis = 0; pClass2 = Fra_RefineClassOne( p, pClass ); nRefis++ )
-    {
-        // if the original class is trivial, remove it
-        if ( pClass[1] == NULL )
-            Vec_PtrPop( vClasses );
-        // if the new class is trivial, stop
-        if ( pClass2[1] == NULL )
-        {
-            nRefis++;
-            break;
-        }
-        // othewise, add the class and continue
-        assert( pClass2[0] != NULL );
-        Vec_PtrPush( vClasses, pClass2 );
-        pClass = pClass2;
-    }
-    return nRefis;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Refines the classes after simulation.]
-
-  Description [Assumes that simulation info is assigned. Returns the
-  number of classes refined.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_ClassesRefine( Fra_Cla_t * p )
-{
-    Vec_Ptr_t * vTemp;
-    Aig_Obj_t ** pClass;
-    int i, nRefis;
-    // refine the classes
-    nRefis = 0;
-    Vec_PtrClear( p->vClassesTemp );
-    Vec_PtrForEachEntry( p->vClasses, pClass, i )
-    {
-        // add the class to the new array
-        assert( pClass[0] != NULL );
-        Vec_PtrPush( p->vClassesTemp, pClass );
-        // refine the class iteratively
-        nRefis += Fra_RefineClassLastIter( p, p->vClassesTemp );
-    }
-    // exchange the class representation
-    vTemp = p->vClassesTemp;
-    p->vClassesTemp = p->vClasses;
-    p->vClasses = vTemp;
-    return nRefis;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Refines constant 1 equivalence class.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_ClassesRefine1( Fra_Cla_t * p, int fRefineNewClass, int * pSkipped )
-{
-    Aig_Obj_t * pObj, ** ppClass;
-    int i, k, nRefis = 1;
-    // check if there is anything to refine
-    if ( Vec_PtrSize(p->vClasses1) == 0 )
-        return 0;
-    // make sure constant 1 class contains only non-constant nodes
-    assert( Vec_PtrEntry(p->vClasses1,0) != Aig_ManConst1(p->pAig) );
-    // collect all the nodes to be refined
-    k = 0;
-    Vec_PtrClear( p->vClassNew );
-    Vec_PtrForEachEntry( p->vClasses1, pObj, i )
-    {
-        if ( p->pFuncNodeIsConst( pObj ) )
-            Vec_PtrWriteEntry( p->vClasses1, k++, pObj );
-        else 
-            Vec_PtrPush( p->vClassNew, pObj );
-    }
-    Vec_PtrShrink( p->vClasses1, k );
-    if ( Vec_PtrSize(p->vClassNew) == 0 )
-        return 0;
-/*
-    printf( "Refined const-1 class: {" );
-    Vec_PtrForEachEntry( p->vClassNew, pObj, i )
-        printf( " %d", pObj->Id );
-    printf( " }\n" );
-*/
-    if ( Vec_PtrSize(p->vClassNew) == 1 )
-    {
-        Fra_ClassObjSetRepr( Vec_PtrEntry(p->vClassNew,0), NULL );
-        return 1;
-    }
-    // create a new class composed of these nodes
-    ppClass = p->pMemClassesFree;
-    p->pMemClassesFree += 2 * Vec_PtrSize(p->vClassNew);
-    Vec_PtrForEachEntry( p->vClassNew, pObj, i )
-    {
-        ppClass[i] = pObj;
-        ppClass[Vec_PtrSize(p->vClassNew)+i] = NULL;
-        Fra_ClassObjSetRepr( pObj, i? ppClass[0] : NULL );
-    }
-    assert( ppClass[0] != NULL );
-    Vec_PtrPush( p->vClasses, ppClass );
-    // iteratively refine this class
-    if ( fRefineNewClass )
-        nRefis += Fra_RefineClassLastIter( p, p->vClasses );
-    else if ( pSkipped )
-        (*pSkipped)++;
-    return nRefis;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts representation of equivalence classes with one class.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassesTest( Fra_Cla_t * p, int Id1, int Id2 )
-{
-    Aig_Obj_t ** pClass;
-    p->pMemClasses = ALLOC( Aig_Obj_t *, 4 );
-    pClass = p->pMemClasses;
-    assert( Id1 < Id2 );
-    pClass[0] = Aig_ManObj( p->pAig, Id1 );
-    pClass[1] = Aig_ManObj( p->pAig, Id2 );
-    pClass[2] = NULL;
-    pClass[3] = NULL;
-    Fra_ClassObjSetRepr( pClass[1], pClass[0] );
-    Vec_PtrPush( p->vClasses, pClass );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates latch correspondence classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassesLatchCorr( Fra_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i, nEntries = 0;
-    Vec_PtrClear( p->pCla->vClasses1 );
-    Aig_ManForEachLoSeq( p->pManAig, pObj, i )
-    {
-        Vec_PtrPush( p->pCla->vClasses1, pObj );
-        Fra_ClassObjSetRepr( pObj, Aig_ManConst1(p->pManAig) );
-    }
-    // allocate room for classes
-    p->pCla->pMemClasses = ALLOC( Aig_Obj_t *, 2*(nEntries + Vec_PtrSize(p->pCla->vClasses1)) );
-    p->pCla->pMemClassesFree = p->pCla->pMemClasses + 2*nEntries;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Postprocesses the classes by removing half of the less useful.]
-
-  Description []
-               
-  SideEffects [] 
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassesPostprocess( Fra_Cla_t * p )
-{
-    int Ratio = 2;
-    Fra_Sml_t * pComb;
-    Aig_Obj_t * pObj, * pRepr, ** ppClass;
-    int * pWeights, WeightMax = 0, i, k, c;
-    // perform combinational simulation
-    pComb = Fra_SmlSimulateComb( p->pAig, 32 );
-    // compute the weight of each node in the classes
-    pWeights = ALLOC( int, Aig_ManObjNumMax(p->pAig) );
-    memset( pWeights, 0, sizeof(int) * Aig_ManObjNumMax(p->pAig) );
-    Aig_ManForEachObj( p->pAig, pObj, i )
-    { 
-        pRepr = Fra_ClassObjRepr( pObj );
-        if ( pRepr == NULL )
-            continue;
-        pWeights[i] = Fra_SmlNodeNotEquWeight( pComb, pRepr->Id, pObj->Id );
-        WeightMax = AIG_MAX( WeightMax, pWeights[i] );
-    }
-    Fra_SmlStop( pComb );
-    printf( "Before: Const = %6d. Class = %6d.  ", Vec_PtrSize(p->vClasses1), Vec_PtrSize(p->vClasses) );
-    // remove nodes from classes whose weight is less than WeightMax/Ratio
-    k = 0;
-    Vec_PtrForEachEntry( p->vClasses1, pObj, i )
-    {
-        if ( pWeights[pObj->Id] >= WeightMax/Ratio )
-            Vec_PtrWriteEntry( p->vClasses1, k++, pObj );
-        else
-            Fra_ClassObjSetRepr( pObj, NULL );
-    }
-    Vec_PtrShrink( p->vClasses1, k );
-    // in each class, compact the nodes
-    Vec_PtrForEachEntry( p->vClasses, ppClass, i )
-    {
-        k = 1;
-        for ( c = 1; ppClass[c]; c++ )
-        {
-            if ( pWeights[ppClass[c]->Id] >= WeightMax/Ratio )
-                ppClass[k++] = ppClass[c];
-            else
-                Fra_ClassObjSetRepr( ppClass[c], NULL );
-        }
-        ppClass[k] = NULL;
-    }
-    // remove classes with only repr
-    k = 0;
-    Vec_PtrForEachEntry( p->vClasses, ppClass, i )
-        if ( ppClass[1] != NULL )
-            Vec_PtrWriteEntry( p->vClasses, k++, ppClass );
-    Vec_PtrShrink( p->vClasses, k );
-    printf( "After: Const = %6d. Class = %6d. \n", Vec_PtrSize(p->vClasses1), Vec_PtrSize(p->vClasses) );
-    free( pWeights );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Postprocesses the classes by selecting representative lowest in top order.]
-
-  Description []
-               
-  SideEffects [] 
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassesSelectRepr( Fra_Cla_t * p )
-{
-    Aig_Obj_t ** pClass, * pNodeMin;
-    int i, c, cMinSupp, nSuppSizeMin, nSuppSizeCur;
-    // reassign representatives in each class
-    Vec_PtrForEachEntry( p->vClasses, pClass, i )
-    {
-        // collect support sizes and find the min-support node
-        pNodeMin = NULL;
-        nSuppSizeMin = AIG_INFINITY;
-        for ( c = 0; pClass[c]; c++ )
-        {
-            nSuppSizeCur = Aig_SupportSize( p->pAig, pClass[c] );
-//            nSuppSizeCur = 1;
-            if ( nSuppSizeMin > nSuppSizeCur || 
-                (nSuppSizeMin == nSuppSizeCur && pNodeMin->Level > pClass[c]->Level) )
-            {
-                nSuppSizeMin = nSuppSizeCur;
-                pNodeMin = pClass[c];
-                cMinSupp = c; 
-            }
-        }
-        // skip the case when the repr did not change
-        if ( cMinSupp == 0 )
-            continue;
-        // make the new node the representative of the class
-        pClass[cMinSupp] = pClass[0];
-        pClass[0] = pNodeMin;
-        // set the representative
-        for ( c = 0; pClass[c]; c++ )
-            Fra_ClassObjSetRepr( pClass[c], c? pClass[0] : NULL );
-    }
-}
-
-
-
-static inline Aig_Obj_t * Fra_ObjEqu( Aig_Obj_t ** ppEquivs, Aig_Obj_t * pObj )                       { return ppEquivs[pObj->Id];  }
-static inline void        Fra_ObjSetEqu( Aig_Obj_t ** ppEquivs, Aig_Obj_t * pObj, Aig_Obj_t * pNode ) { ppEquivs[pObj->Id] = pNode; }
-
-static inline Aig_Obj_t * Fra_ObjChild0Equ( Aig_Obj_t ** ppEquivs, Aig_Obj_t * pObj ) { return Aig_NotCond(Fra_ObjEqu(ppEquivs,Aig_ObjFanin0(pObj)), Aig_ObjFaninC0(pObj));  }
-static inline Aig_Obj_t * Fra_ObjChild1Equ( Aig_Obj_t ** ppEquivs, Aig_Obj_t * pObj ) { return Aig_NotCond(Fra_ObjEqu(ppEquivs,Aig_ObjFanin1(pObj)), Aig_ObjFaninC1(pObj));  }
-
-/**Function*************************************************************
-
-  Synopsis    [Add the node and its constraints to the new AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Fra_ClassesDeriveNode( Aig_Man_t * pManFraig, Aig_Obj_t * pObj, Aig_Obj_t ** ppEquivs )
-{
-    Aig_Obj_t * pObjNew, * pObjRepr, * pObjReprNew, * pMiter;//, * pObjNew2;
-    // skip nodes without representative
-    if ( (pObjRepr = Fra_ClassObjRepr(pObj)) == NULL )
-        return;
-    assert( pObjRepr->Id < pObj->Id );
-    // get the new node 
-    pObjNew = Fra_ObjEqu( ppEquivs, pObj );
-    // get the new node of the representative
-    pObjReprNew = Fra_ObjEqu( ppEquivs, pObjRepr );
-    // if this is the same node, no need to add constraints
-    if ( Aig_Regular(pObjNew) == Aig_Regular(pObjReprNew) )
-        return;
-    // these are different nodes - perform speculative reduction
-//    pObjNew2 = Aig_NotCond( pObjReprNew, pObj->fPhase ^ pObjRepr->fPhase );
-    // set the new node
-//    Fra_ObjSetEqu( ppEquivs, pObj, pObjNew2 );
-    // add the constraint
-    pMiter = Aig_Exor( pManFraig, Aig_Regular(pObjNew), Aig_Regular(pObjReprNew) );
-    pMiter = Aig_NotCond( pMiter, Aig_Regular(pMiter)->fPhase ^ Aig_IsComplement(pMiter) );
-    pMiter = Aig_Not( pMiter );
-    Aig_ObjCreatePo( pManFraig, pMiter );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives AIG for the partitioned problem.]
-
-  Description []
-               
-  SideEffects [] 
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_ClassesDeriveAig( Fra_Cla_t * p, int nFramesK )
-{
-    Aig_Man_t * pManFraig;
-    Aig_Obj_t * pObj, * pObjNew;
-    Aig_Obj_t ** pLatches, ** ppEquivs;
-    int i, k, f, nFramesAll = nFramesK + 1;
-    assert( Aig_ManRegNum(p->pAig) > 0 );
-    assert( Aig_ManRegNum(p->pAig) < Aig_ManPiNum(p->pAig) );
-    assert( nFramesK > 0 );
-    // start the fraig package
-    pManFraig = Aig_ManStart( Aig_ManObjNumMax(p->pAig) * nFramesAll );
-    pManFraig->pName = Aig_UtilStrsav( p->pAig->pName );
-    // allocate place for the node mapping
-    ppEquivs = ALLOC( Aig_Obj_t *, Aig_ManObjNumMax(p->pAig) );
-    Fra_ObjSetEqu( ppEquivs, Aig_ManConst1(p->pAig), Aig_ManConst1(pManFraig) );
-    // create latches for the first frame
-    Aig_ManForEachLoSeq( p->pAig, pObj, i )
-        Fra_ObjSetEqu( ppEquivs, pObj, Aig_ObjCreatePi(pManFraig) );
-    // add timeframes
-    pLatches = ALLOC( Aig_Obj_t *, Aig_ManRegNum(p->pAig) );
-    for ( f = 0; f < nFramesAll; f++ )
-    {
-        // create PIs for this frame
-        Aig_ManForEachPiSeq( p->pAig, pObj, i )
-            Fra_ObjSetEqu( ppEquivs, pObj, Aig_ObjCreatePi(pManFraig) );
-        // set the constraints on the latch outputs
-        Aig_ManForEachLoSeq( p->pAig, pObj, i )
-            Fra_ClassesDeriveNode( pManFraig, pObj, ppEquivs );
-        // add internal nodes of this frame
-        Aig_ManForEachNode( p->pAig, pObj, i )
-        {
-            pObjNew = Aig_And( pManFraig, Fra_ObjChild0Equ(ppEquivs, pObj), Fra_ObjChild1Equ(ppEquivs, pObj) );
-            Fra_ObjSetEqu( ppEquivs, pObj, pObjNew );
-            Fra_ClassesDeriveNode( pManFraig, pObj, ppEquivs );
-        }
-        if ( f == nFramesAll - 1 )
-            break;
-        if ( f == nFramesAll - 2 )
-            pManFraig->nAsserts = Aig_ManPoNum(pManFraig);
-        // save the latch input values
-        k = 0;
-        Aig_ManForEachLiSeq( p->pAig, pObj, i )
-            pLatches[k++] = Fra_ObjChild0Equ( ppEquivs, pObj );
-        // insert them to the latch output values
-        k = 0;
-        Aig_ManForEachLoSeq( p->pAig, pObj, i )
-            Fra_ObjSetEqu( ppEquivs, pObj, pLatches[k++] );
-    }
-    free( pLatches );
-    free( ppEquivs );
-    // mark the asserts
-    assert( Aig_ManPoNum(pManFraig) % nFramesAll == 0 );
-printf( "Assert miters = %6d. Output miters = %6d.\n", 
-       pManFraig->nAsserts, Aig_ManPoNum(pManFraig) - pManFraig->nAsserts );
-    // remove dangling nodes
-    Aig_ManCleanup( pManFraig );
-    return pManFraig;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraCnf.c b/src/aig/fra/fraCnf.c
deleted file mode 100644
index d56c0254..00000000
--- a/src/aig/fra/fraCnf.c
+++ /dev/null
@@ -1,286 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraCnf.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraCnf.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-
-/**Function*************************************************************
-
-  Synopsis    [Addes clauses to the solver.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_AddClausesMux( Fra_Man_t * p, Aig_Obj_t * pNode )
-{
-    Aig_Obj_t * pNodeI, * pNodeT, * pNodeE;
-    int pLits[4], RetValue, VarF, VarI, VarT, VarE, fCompT, fCompE;
-
-    assert( !Aig_IsComplement( pNode ) );
-    assert( Aig_ObjIsMuxType( pNode ) );
-    // get nodes (I = if, T = then, E = else)
-    pNodeI = Aig_ObjRecognizeMux( pNode, &pNodeT, &pNodeE );
-    // get the variable numbers
-    VarF = Fra_ObjSatNum(pNode);
-    VarI = Fra_ObjSatNum(pNodeI);
-    VarT = Fra_ObjSatNum(Aig_Regular(pNodeT));
-    VarE = Fra_ObjSatNum(Aig_Regular(pNodeE));
-    // get the complementation flags
-    fCompT = Aig_IsComplement(pNodeT);
-    fCompE = Aig_IsComplement(pNodeE);
-
-    // f = ITE(i, t, e)
-
-    // i' + t' + f
-    // i' + t  + f'
-    // i  + e' + f
-    // i  + e  + f'
-
-    // create four clauses
-    pLits[0] = toLitCond(VarI, 1);
-    pLits[1] = toLitCond(VarT, 1^fCompT);
-    pLits[2] = toLitCond(VarF, 0);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-    pLits[0] = toLitCond(VarI, 1);
-    pLits[1] = toLitCond(VarT, 0^fCompT);
-    pLits[2] = toLitCond(VarF, 1);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-    pLits[0] = toLitCond(VarI, 0);
-    pLits[1] = toLitCond(VarE, 1^fCompE);
-    pLits[2] = toLitCond(VarF, 0);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-    pLits[0] = toLitCond(VarI, 0);
-    pLits[1] = toLitCond(VarE, 0^fCompE);
-    pLits[2] = toLitCond(VarF, 1);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-
-    // two additional clauses
-    // t' & e' -> f'
-    // t  & e  -> f 
-
-    // t  + e   + f'
-    // t' + e'  + f 
-
-    if ( VarT == VarE )
-    {
-//        assert( fCompT == !fCompE );
-        return;
-    }
-
-    pLits[0] = toLitCond(VarT, 0^fCompT);
-    pLits[1] = toLitCond(VarE, 0^fCompE);
-    pLits[2] = toLitCond(VarF, 1);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-    pLits[0] = toLitCond(VarT, 1^fCompT);
-    pLits[1] = toLitCond(VarE, 1^fCompE);
-    pLits[2] = toLitCond(VarF, 0);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Addes clauses to the solver.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_AddClausesSuper( Fra_Man_t * p, Aig_Obj_t * pNode, Vec_Ptr_t * vSuper )
-{
-    Aig_Obj_t * pFanin;
-    int * pLits, nLits, RetValue, i;
-    assert( !Aig_IsComplement(pNode) );
-    assert( Aig_ObjIsNode( pNode ) );
-    // create storage for literals
-    nLits = Vec_PtrSize(vSuper) + 1;
-    pLits = ALLOC( int, nLits );
-    // suppose AND-gate is A & B = C
-    // add !A => !C   or   A + !C
-    Vec_PtrForEachEntry( vSuper, pFanin, i )
-    {
-        pLits[0] = toLitCond(Fra_ObjSatNum(Aig_Regular(pFanin)), Aig_IsComplement(pFanin));
-        pLits[1] = toLitCond(Fra_ObjSatNum(pNode), 1);
-        RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 2 );
-        assert( RetValue );
-    }
-    // add A & B => C   or   !A + !B + C
-    Vec_PtrForEachEntry( vSuper, pFanin, i )
-        pLits[i] = toLitCond(Fra_ObjSatNum(Aig_Regular(pFanin)), !Aig_IsComplement(pFanin));
-    pLits[nLits-1] = toLitCond(Fra_ObjSatNum(pNode), 0);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + nLits );
-    assert( RetValue );
-    free( pLits );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_CollectSuper_rec( Aig_Obj_t * pObj, Vec_Ptr_t * vSuper, int fFirst, int fUseMuxes )
-{
-    // if the new node is complemented or a PI, another gate begins
-    if ( Aig_IsComplement(pObj) || Aig_ObjIsPi(pObj) || (!fFirst && Aig_ObjRefs(pObj) > 1) || 
-         (fUseMuxes && Aig_ObjIsMuxType(pObj)) )
-    {
-        Vec_PtrPushUnique( vSuper, pObj );
-        return;
-    }
-    // go through the branches
-    Fra_CollectSuper_rec( Aig_ObjChild0(pObj), vSuper, 0, fUseMuxes );
-    Fra_CollectSuper_rec( Aig_ObjChild1(pObj), vSuper, 0, fUseMuxes );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Fra_CollectSuper( Aig_Obj_t * pObj, int fUseMuxes )
-{
-    Vec_Ptr_t * vSuper;
-    assert( !Aig_IsComplement(pObj) );
-    assert( !Aig_ObjIsPi(pObj) );
-    vSuper = Vec_PtrAlloc( 4 );
-    Fra_CollectSuper_rec( pObj, vSuper, 1, fUseMuxes );
-    return vSuper;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the solver clause database.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ObjAddToFrontier( Fra_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vFrontier )
-{
-    Fra_Man_t * pTemp = pObj->pData;
-    assert( !Aig_IsComplement(pObj) );
-    if ( Fra_ObjSatNum(pObj) )
-        return;
-    assert( Fra_ObjSatNum(pObj) == 0 );
-    assert( Fra_ObjFaninVec(pObj) == NULL );
-    if ( Aig_ObjIsConst1(pObj) )
-        return;
-//printf( "Assigning node %d number %d\n", pObj->Id, p->nSatVars );
-    Fra_ObjSetSatNum( pObj, p->nSatVars++ );
-    if ( Aig_ObjIsNode(pObj) )
-        Vec_PtrPush( vFrontier, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the solver clause database.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_CnfNodeAddToSolver( Fra_Man_t * p, Aig_Obj_t * pOld, Aig_Obj_t * pNew )
-{ 
-    Vec_Ptr_t * vFrontier, * vFanins;
-    Aig_Obj_t * pNode, * pFanin;
-    int i, k, fUseMuxes = 1;
-    assert( pOld || pNew );
-    // quit if CNF is ready
-    if ( (!pOld || Fra_ObjFaninVec(pOld)) && (!pNew || Fra_ObjFaninVec(pNew)) )
-        return;
-    // start the frontier
-    vFrontier = Vec_PtrAlloc( 100 );
-    if ( pOld ) Fra_ObjAddToFrontier( p, pOld, vFrontier );
-    if ( pNew ) Fra_ObjAddToFrontier( p, pNew, vFrontier );
-    // explore nodes in the frontier
-    Vec_PtrForEachEntry( vFrontier, pNode, i )
-    {
-        // create the supergate
-        assert( Fra_ObjSatNum(pNode) );
-        assert( Fra_ObjFaninVec(pNode) == NULL );
-        if ( fUseMuxes && Aig_ObjIsMuxType(pNode) )
-        {
-            vFanins = Vec_PtrAlloc( 4 );
-            Vec_PtrPushUnique( vFanins, Aig_ObjFanin0( Aig_ObjFanin0(pNode) ) );
-            Vec_PtrPushUnique( vFanins, Aig_ObjFanin0( Aig_ObjFanin1(pNode) ) );
-            Vec_PtrPushUnique( vFanins, Aig_ObjFanin1( Aig_ObjFanin0(pNode) ) );
-            Vec_PtrPushUnique( vFanins, Aig_ObjFanin1( Aig_ObjFanin1(pNode) ) );
-            Vec_PtrForEachEntry( vFanins, pFanin, k )
-                Fra_ObjAddToFrontier( p, Aig_Regular(pFanin), vFrontier );
-            Fra_AddClausesMux( p, pNode );
-        }
-        else
-        {
-            vFanins = Fra_CollectSuper( pNode, fUseMuxes );
-            Vec_PtrForEachEntry( vFanins, pFanin, k )
-                Fra_ObjAddToFrontier( p, Aig_Regular(pFanin), vFrontier );
-            Fra_AddClausesSuper( p, pNode, vFanins );
-        }
-        assert( Vec_PtrSize(vFanins) > 1 );
-        Fra_ObjSetFaninVec( pNode, vFanins );
-    }
-    Vec_PtrFree( vFrontier );
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraCore.c b/src/aig/fra/fraCore.c
deleted file mode 100644
index b390edbe..00000000
--- a/src/aig/fra/fraCore.c
+++ /dev/null
@@ -1,428 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraCore.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraCore.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-/* 
-    Speculating reduction in the sequential case leads to an interesting 
-    situation when a counter-ex may not refine any classes. This happens
-    for non-constant equivalence classes. In such cases the representative
-    of the class (proved by simulation to be non-constant) may be reduced 
-    to a constant during the speculative reduction. The fraig-representative 
-    of this representative node is a constant node, even though this is a 
-    non-constant class. Experiments have shown that this situation happens 
-    very often at the beginning of the refinement iteration when there are 
-    many spurious candidate equivalence classes (especially if heavy-duty 
-    simulatation of BMC was node used at the beginning). As a result, the 
-    SAT solver run may return a counter-ex that  distinguishes the given 
-    representative node from the constant-1 node but this counter-ex
-    does not distinguish the nodes in the non-costant class... This is why 
-    there is no check of refinment after a counter-ex in the sequential case.
-*/
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Reports the status of the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_FraigMiterStatus( Aig_Man_t * p )
-{
-    Aig_Obj_t * pObj, * pObjNew;
-    int i, CountConst0 = 0, CountNonConst0 = 0, CountUndecided = 0;
-    if ( p->pData )
-        return 0;
-    Aig_ManForEachPoSeq( p, pObj, i )
-    {
-        pObjNew = Aig_ObjChild0(pObj);
-        // check if the output is constant 0
-        if ( pObjNew == Aig_ManConst0(p) )
-        {
-            CountConst0++;
-            continue;
-        }
-        // check if the output is constant 1
-        if ( pObjNew == Aig_ManConst1(p) )
-        {
-            CountNonConst0++;
-            continue;
-        }
-        // check if the output can be constant 0
-        if ( Aig_Regular(pObjNew)->fPhase != (unsigned)Aig_IsComplement(pObjNew) )
-        {
-            CountNonConst0++;
-            continue;
-        }
-        CountUndecided++;
-    }
-/*
-    if ( p->pParams->fVerbose )
-    {
-        printf( "Miter has %d outputs. ", Aig_ManPoNum(p->pManAig) );
-        printf( "Const0 = %d.  ", CountConst0 );
-        printf( "NonConst0 = %d.  ", CountNonConst0 );
-        printf( "Undecided = %d.  ", CountUndecided );
-        printf( "\n" );
-    }
-*/
-    if ( CountNonConst0 )
-        return 0;
-    if ( CountUndecided )
-        return -1;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Write speculative miter for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Fra_FraigNodeSpeculate( Fra_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pObjFraig, Aig_Obj_t * pObjReprFraig )
-{ 
-    static int Counter = 0;
-    char FileName[20];
-    Aig_Man_t * pTemp;
-    Aig_Obj_t * pNode;
-    int i;
-    // create manager with the logic for these two nodes
-    pTemp = Aig_ManExtractMiter( p->pManFraig, pObjFraig, pObjReprFraig );
-    // dump the logic into a file
-    sprintf( FileName, "aig\\%03d.blif", ++Counter );
-    Aig_ManDumpBlif( pTemp, FileName );
-    printf( "Speculation cone with %d nodes was written into file \"%s\".\n", Aig_ManNodeNum(pTemp), FileName );
-    // clean up
-    Aig_ManStop( pTemp );
-    Aig_ManForEachObj( p->pManFraig, pNode, i )
-        pNode->pData = p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Verifies the generated counter-ex.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_FraigVerifyCounterEx( Fra_Man_t * p, Vec_Int_t * vCex )
-{
-    Aig_Obj_t * pObj, ** ppClass;
-    int i, c;
-    assert( Aig_ManPiNum(p->pManAig) == Vec_IntSize(vCex) );
-    // make sure the input pattern is not used
-    Aig_ManForEachObj( p->pManAig, pObj, i )
-        assert( !pObj->fMarkB );
-    // simulate the cex through the AIG
-    Aig_ManConst1(p->pManAig)->fMarkB = 1;
-    Aig_ManForEachPi( p->pManAig, pObj, i )
-        pObj->fMarkB = Vec_IntEntry(vCex, i);
-    Aig_ManForEachNode( p->pManAig, pObj, i )
-        pObj->fMarkB = (Aig_ObjFanin0(pObj)->fMarkB ^ Aig_ObjFaninC0(pObj)) & 
-                       (Aig_ObjFanin1(pObj)->fMarkB ^ Aig_ObjFaninC1(pObj));
-    Aig_ManForEachPo( p->pManAig, pObj, i )
-        pObj->fMarkB = Aig_ObjFanin0(pObj)->fMarkB ^ Aig_ObjFaninC0(pObj);
-    // check if the classes hold
-    Vec_PtrForEachEntry( p->pCla->vClasses1, pObj, i )
-    {
-        if ( pObj->fPhase != pObj->fMarkB )
-            printf( "The node %d is not constant under cex!\n", pObj->Id );
-    }
-    Vec_PtrForEachEntry( p->pCla->vClasses, ppClass, i )
-    {
-        for ( c = 1; ppClass[c]; c++ )
-            if ( (ppClass[0]->fPhase ^ ppClass[c]->fPhase) != (ppClass[0]->fMarkB ^ ppClass[c]->fMarkB) )
-                printf( "The nodes %d and %d are not equal under cex!\n", ppClass[0]->Id, ppClass[c]->Id );
-//        for ( c = 0; ppClass[c]; c++ )
-//            if ( Fra_ObjFraig(ppClass[c],p->pPars->nFramesK) == Aig_ManConst1(p->pManFraig) )
-//                printf( "A member of non-constant class has a constant repr!\n" );
-    }
-    // clean the simulation pattern
-    Aig_ManForEachObj( p->pManAig, pObj, i )
-        pObj->fMarkB = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fraiging for one node.]
-
-  Description [Returns the fraiged node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Fra_FraigNode( Fra_Man_t * p, Aig_Obj_t * pObj )
-{ 
-    Aig_Obj_t * pObjRepr, * pObjFraig, * pObjFraig2, * pObjReprFraig;
-    int RetValue;
-    assert( !Aig_IsComplement(pObj) );
-    // get representative of this class
-    pObjRepr = Fra_ClassObjRepr( pObj );
-    if ( pObjRepr == NULL || // this is a unique node
-       (!p->pPars->fDoSparse && pObjRepr == Aig_ManConst1(p->pManAig)) ) // this is a sparse node
-        return;
-    // get the fraiged node
-    pObjFraig = Fra_ObjFraig( pObj, p->pPars->nFramesK );
-    // get the fraiged representative
-    pObjReprFraig = Fra_ObjFraig( pObjRepr, p->pPars->nFramesK );
-    // if the fraiged nodes are the same, return
-    if ( Aig_Regular(pObjFraig) == Aig_Regular(pObjReprFraig) )
-    {
-        p->nSatCallsSkipped++;
-        return;
-    }
-    assert( p->pPars->nFramesK || Aig_Regular(pObjFraig) != Aig_ManConst1(p->pManFraig) );
-    // if they are proved different, the c-ex will be in p->pPatWords
-    RetValue = Fra_NodesAreEquiv( p, Aig_Regular(pObjReprFraig), Aig_Regular(pObjFraig) );
-    if ( RetValue == 1 )  // proved equivalent
-    {
-//        if ( p->pPars->fChoicing )
-//            Aig_ObjCreateRepr( p->pManFraig, Aig_Regular(pObjReprFraig), Aig_Regular(pObjFraig) );
-        // the nodes proved equal
-        pObjFraig2 = Aig_NotCond( pObjReprFraig, pObj->fPhase ^ pObjRepr->fPhase );
-        Fra_ObjSetFraig( pObj, p->pPars->nFramesK, pObjFraig2 );
-        return;
-    }
-    if ( RetValue == -1 ) // failed
-    {
-        if ( p->vTimeouts == NULL )
-            p->vTimeouts = Vec_PtrAlloc( 100 );
-        Vec_PtrPush( p->vTimeouts, pObj );
-        if ( !p->pPars->fSpeculate )
-            return;
-        assert( 0 );
-        // speculate
-        p->nSpeculs++;
-        pObjFraig2 = Aig_NotCond( pObjReprFraig, pObj->fPhase ^ pObjRepr->fPhase );
-        Fra_ObjSetFraig( pObj, p->pPars->nFramesK, pObjFraig2 );
-        Fra_FraigNodeSpeculate( p, pObj, Aig_Regular(pObjFraig), Aig_Regular(pObjReprFraig) );
-        return;
-    }
-    // disprove the nodes
-    p->pCla->fRefinement = 1;
-    // if we do not include the node into those disproved, we may end up 
-    // merging this node with another representative, for which proof has timed out
-    if ( p->vTimeouts )
-        Vec_PtrPush( p->vTimeouts, pObj );
-    // verify that the counter-example satisfies all the constraints
-//    if ( p->vCex )
-//        Fra_FraigVerifyCounterEx( p, p->vCex );
-    // simulate the counter-example and return the Fraig node
-    Fra_SmlResimulate( p );
-    if ( !p->pPars->nFramesK && Fra_ClassObjRepr(pObj) == pObjRepr )
-        printf( "Fra_FraigNode(): Error in class refinement!\n" );
-    assert( p->pPars->nFramesK || Fra_ClassObjRepr(pObj) != pObjRepr );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fraiging for the internal nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_FraigSweep( Fra_Man_t * p )
-{
-    Bar_Progress_t * pProgress;
-    Aig_Obj_t * pObj, * pObjNew;
-    int i, k = 0, Pos = 0;
-    // fraig latch outputs
-    Aig_ManForEachLoSeq( p->pManAig, pObj, i )
-    {
-        Fra_FraigNode( p, pObj );
-        if ( p->pPars->fUseImps )
-            Pos = Fra_ImpCheckForNode( p, p->pCla->vImps, pObj, Pos );
-    }
-    if ( p->pPars->fLatchCorr )
-        return;
-    // fraig internal nodes
-    pProgress = Bar_ProgressStart( stdout, Aig_ManObjNumMax(p->pManAig) );
-    Aig_ManForEachNode( p->pManAig, pObj, i )
-    {
-        Bar_ProgressUpdate( pProgress, i, NULL );
-        // derive and remember the new fraig node
-        pObjNew = Aig_And( p->pManFraig, Fra_ObjChild0Fra(pObj,p->pPars->nFramesK), Fra_ObjChild1Fra(pObj,p->pPars->nFramesK) );
-        Fra_ObjSetFraig( pObj, p->pPars->nFramesK, pObjNew );
-        Aig_Regular(pObjNew)->pData = p;
-        // quit if simulation detected a counter-example for a PO
-        if ( p->pManFraig->pData )
-            continue;
-        // perform fraiging
-        Fra_FraigNode( p, pObj );
-        if ( p->pPars->fUseImps )
-            Pos = Fra_ImpCheckForNode( p, p->pCla->vImps, pObj, Pos );
-    }
-    Bar_ProgressStop( pProgress );
-    // try to prove the outputs of the miter
-    p->nNodesMiter = Aig_ManNodeNum(p->pManFraig);
-//    Fra_MiterStatus( p->pManFraig );
-//    if ( p->pPars->fProve && p->pManFraig->pData == NULL )
-//        Fra_MiterProve( p );
-    // compress implications after processing all of them
-    if ( p->pPars->fUseImps )
-        Fra_ImpCompactArray( p->pCla->vImps );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fraiging of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_FraigPerform( Aig_Man_t * pManAig, Fra_Par_t * pPars )
-{
-    Fra_Man_t * p;
-    Aig_Man_t * pManAigNew;
-    int clk;
-    if ( Aig_ManNodeNum(pManAig) == 0 )
-        return Aig_ManDup(pManAig, 1);
-clk = clock();
-    assert( Aig_ManLatchNum(pManAig) == 0 );
-    p = Fra_ManStart( pManAig, pPars );
-    p->pManFraig = Fra_ManPrepareComb( p );
-    p->pSml = Fra_SmlStart( pManAig, 0, 1, pPars->nSimWords );
-    Fra_SmlSimulate( p, 0 );
-//    if ( p->pPars->fChoicing )
-//        Aig_ManReprStart( p->pManFraig, Aig_ManObjNumMax(p->pManAig) );
-    // collect initial states
-    p->nLitsBeg  = Fra_ClassesCountLits( p->pCla );
-    p->nNodesBeg = Aig_ManNodeNum(pManAig);
-    p->nRegsBeg  = Aig_ManRegNum(pManAig);
-    // perform fraig sweep
-    Fra_FraigSweep( p );
-    // call back the procedure to check implications
-    if ( pManAig->pImpFunc )
-        pManAig->pImpFunc( p, pManAig->pImpData );
-    // finalize the fraiged manager
-    Fra_ManFinalizeComb( p );
-    if ( p->pPars->fChoicing )
-    {
-int clk2 = clock();
-        Fra_ClassesCopyReprs( p->pCla, p->vTimeouts );
-        pManAigNew = Aig_ManDupRepr( p->pManAig, 1 );
-        Aig_ManReprStart( pManAigNew, Aig_ManObjNumMax(pManAigNew) );
-        Aig_ManTransferRepr( pManAigNew, p->pManAig );
-        Aig_ManMarkValidChoices( pManAigNew );
-        Aig_ManStop( p->pManFraig );
-        p->pManFraig = NULL;
-p->timeTrav += clock() - clk2;
-    }
-    else
-    {
-        Aig_ManCleanup( p->pManFraig );
-        pManAigNew = p->pManFraig;
-        p->pManFraig = NULL;
-    }
-p->timeTotal = clock() - clk;
-    // collect final stats
-    p->nLitsEnd  = Fra_ClassesCountLits( p->pCla );
-    p->nNodesEnd = Aig_ManNodeNum(pManAigNew);
-    p->nRegsEnd  = Aig_ManRegNum(pManAigNew);
-    Fra_ManStop( p );
-    return pManAigNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs choicing of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_FraigChoice( Aig_Man_t * pManAig, int nConfMax )
-{
-    Fra_Par_t Pars, * pPars = &Pars; 
-    Fra_ParamsDefault( pPars );
-    pPars->nBTLimitNode = nConfMax;
-    pPars->fChoicing    = 1;
-    pPars->fDoSparse    = 1;
-    pPars->fSpeculate   = 0;
-    pPars->fProve       = 0;
-    pPars->fVerbose     = 0;
-    return Fra_FraigPerform( pManAig, pPars );
-}
- 
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_FraigEquivence( Aig_Man_t * pManAig, int nConfMax )
-{
-    Aig_Man_t * pFraig;
-    Fra_Par_t Pars, * pPars = &Pars; 
-    Fra_ParamsDefault( pPars );
-    pPars->nBTLimitNode = nConfMax;
-    pPars->fChoicing    = 0;
-    pPars->fDoSparse    = 1;
-    pPars->fSpeculate   = 0;
-    pPars->fProve       = 0;
-    pPars->fVerbose     = 0;
-    pFraig = Fra_FraigPerform( pManAig, pPars );
-    return pFraig;
-} 
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraImp.c b/src/aig/fra/fraImp.c
deleted file mode 100644
index a5fc7d58..00000000
--- a/src/aig/fra/fraImp.c
+++ /dev/null
@@ -1,721 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraImp.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    [Detecting and proving implications.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraImp.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of 1s in each siminfo of each node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Fra_SmlCountOnesOne( Fra_Sml_t * p, int Node )
-{
-    unsigned * pSim;
-    int k, Counter = 0;
-    pSim = Fra_ObjSim( p, Node );
-    for ( k = p->nWordsPref; k < p->nWordsTotal; k++ )
-        Counter += Aig_WordCountOnes( pSim[k] );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of 1s in each siminfo of each node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int * Fra_SmlCountOnes( Fra_Sml_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i, * pnBits; 
-    pnBits = ALLOC( int, Aig_ManObjNumMax(p->pAig) );  
-    memset( pnBits, 0, sizeof(int) * Aig_ManObjNumMax(p->pAig) );
-    Aig_ManForEachObj( p->pAig, pObj, i )
-        pnBits[i] = Fra_SmlCountOnesOne( p, i );
-    return pnBits;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if implications holds.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Sml_NodeCheckImp( Fra_Sml_t * p, int Left, int Right )
-{
-    unsigned * pSimL, * pSimR;
-    int k;
-    pSimL = Fra_ObjSim( p, Left );
-    pSimR = Fra_ObjSim( p, Right );
-    for ( k = p->nWordsPref; k < p->nWordsTotal; k++ )
-        if ( pSimL[k] & ~pSimR[k] )
-            return 0;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of 1s in the complement of the implication.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Sml_NodeNotImpWeight( Fra_Sml_t * p, int Left, int Right )
-{
-    unsigned * pSimL, * pSimR;
-    int k, Counter = 0;
-    pSimL = Fra_ObjSim( p, Left );
-    pSimR = Fra_ObjSim( p, Right );
-    for ( k = p->nWordsPref; k < p->nWordsTotal; k++ )
-        Counter += Aig_WordCountOnes( pSimL[k] & ~pSimR[k] );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the complement of the implication.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Sml_NodeSaveNotImpPatterns( Fra_Sml_t * p, int Left, int Right, unsigned * pResult )
-{
-    unsigned * pSimL, * pSimR;
-    int k;
-    pSimL = Fra_ObjSim( p, Left );
-    pSimR = Fra_ObjSim( p, Right );
-    for ( k = p->nWordsPref; k < p->nWordsTotal; k++ )
-        pResult[k] |= pSimL[k] & ~pSimR[k];
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the array of nodes sorted by the number of 1s.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Fra_SmlSortUsingOnes( Fra_Sml_t * p, int fLatchCorr )
-{
-    Aig_Obj_t * pObj;
-    Vec_Ptr_t * vNodes;
-    int i, nNodes, nTotal, nBits, * pnNodes, * pnBits, * pMemory;
-    assert( p->nWordsTotal > 0 );
-    // count 1s in each node's siminfo
-    pnBits = Fra_SmlCountOnes( p );
-    // count number of nodes having that many 1s
-    nNodes = 0;
-    nBits = p->nWordsTotal * 32;
-    pnNodes = ALLOC( int, nBits + 1 );
-    memset( pnNodes, 0, sizeof(int) * (nBits + 1) );
-    Aig_ManForEachObj( p->pAig, pObj, i )
-    {
-        if ( i == 0 ) continue;
-        // skip non-PI and non-internal nodes
-        if ( fLatchCorr )
-        {
-            if ( !Aig_ObjIsPi(pObj) )
-                continue;
-        }
-        else
-        {
-            if ( !Aig_ObjIsNode(pObj) && !Aig_ObjIsPi(pObj) )
-                continue;
-        }
-        // skip nodes participating in the classes
-//        if ( Fra_ClassObjRepr(pObj) )
-//            continue;
-        assert( pnBits[i] <= nBits ); // "<" because of normalized info
-        pnNodes[pnBits[i]]++;
-        nNodes++;
-    }
-    // allocate memory for all the nodes
-    pMemory = ALLOC( int, nNodes + nBits + 1 );  
-    // markup the memory for each node
-    vNodes = Vec_PtrAlloc( nBits + 1 );
-    Vec_PtrPush( vNodes, pMemory );
-    for ( i = 1; i <= nBits; i++ )
-    {
-        pMemory += pnNodes[i-1] + 1;
-        Vec_PtrPush( vNodes, pMemory );
-    }
-    // add the nodes
-    memset( pnNodes, 0, sizeof(int) * (nBits + 1) );
-    Aig_ManForEachObj( p->pAig, pObj, i )
-    {
-        if ( i == 0 ) continue;
-        // skip non-PI and non-internal nodes
-        if ( fLatchCorr )
-        {
-            if ( !Aig_ObjIsPi(pObj) )
-                continue;
-        }
-        else
-        {
-            if ( !Aig_ObjIsNode(pObj) && !Aig_ObjIsPi(pObj) )
-                continue;
-        }
-        // skip nodes participating in the classes
-//        if ( Fra_ClassObjRepr(pObj) )
-//            continue;
-        pMemory = Vec_PtrEntry( vNodes, pnBits[i] );
-        pMemory[ pnNodes[pnBits[i]]++ ] = i;
-    }
-    // add 0s in the end
-    nTotal = 0;
-    Vec_PtrForEachEntry( vNodes, pMemory, i )
-    {
-        pMemory[ pnNodes[i]++ ] = 0;
-        nTotal += pnNodes[i];
-    }
-    assert( nTotal == nNodes + nBits + 1 );
-    free( pnNodes );
-    free( pnBits );
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the array of implications with the highest cost.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Fra_SmlSelectMaxCost( Vec_Int_t * vImps, int * pCosts, int nCostMax, int nImpLimit, int * pCostRange )
-{
-    Vec_Int_t * vImpsNew;
-    int * pCostCount, nImpCount, Imp, i, c;
-    assert( Vec_IntSize(vImps) >= nImpLimit );
-    // count how many implications have each cost
-    pCostCount = ALLOC( int, nCostMax + 1 );
-    memset( pCostCount, 0, sizeof(int) * (nCostMax + 1) );
-    for ( i = 0; i < Vec_IntSize(vImps); i++ )
-    {
-        assert( pCosts[i] <= nCostMax );
-        pCostCount[ pCosts[i] ]++;
-    }
-    assert( pCostCount[0] == 0 );
-    // select the bound on the cost (above this bound, implication will be included)
-    nImpCount = 0;
-    for ( c = nCostMax; c > 0; c-- )
-    {
-        nImpCount += pCostCount[c];
-        if ( nImpCount >= nImpLimit )
-            break;
-    }
-//    printf( "Cost range >= %d.\n", c );
-    // collect implications with the given costs
-    vImpsNew = Vec_IntAlloc( nImpLimit );
-    Vec_IntForEachEntry( vImps, Imp, i )
-    {
-        if ( pCosts[i] < c )
-            continue;
-        Vec_IntPush( vImpsNew, Imp );
-        if ( Vec_IntSize( vImpsNew ) == nImpLimit )
-            break;
-    }
-    free( pCostCount );
-    if ( pCostRange )
-        *pCostRange = c;
-    return vImpsNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compares two implications using their largest ID.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Sml_CompareMaxId( unsigned short * pImp1, unsigned short * pImp2 )
-{
-    int Max1 = AIG_MAX( pImp1[0], pImp1[1] );
-    int Max2 = AIG_MAX( pImp2[0], pImp2[1] );
-    if ( Max1 < Max2 )
-        return -1;
-    if ( Max1 > Max2  )
-        return 1;
-    return 0; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives implication candidates.]
-
-  Description [Implication candidates have the property that 
-  (1) they hold using sequential simulation information
-  (2) they do not hold using combinational simulation information
-  (3) they have as high expressive power as possible (heuristically)
-      that is, they are easy to disprove combinationally
-      meaning they cover relatively larger sequential subspace.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Fra_ImpDerive( Fra_Man_t * p, int nImpMaxLimit, int nImpUseLimit, int fLatchCorr )
-{
-    int nSimWords = 64;
-    Fra_Sml_t * pSeq, * pComb;
-    Vec_Int_t * vImps, * vTemp;
-    Vec_Ptr_t * vNodes;
-    int * pImpCosts, * pNodesI, * pNodesK;
-    int nImpsTotal = 0, nImpsTried = 0, nImpsNonSeq = 0, nImpsComb = 0, nImpsCollected = 0;
-    int CostMin = AIG_INFINITY, CostMax = 0;
-    int i, k, Imp, CostRange, clk = clock();
-    assert( Aig_ManObjNumMax(p->pManAig) < (1 << 15) );
-    assert( nImpMaxLimit > 0 && nImpUseLimit > 0 && nImpUseLimit <= nImpMaxLimit );
-    // normalize both managers
-    pComb = Fra_SmlSimulateComb( p->pManAig, nSimWords );
-    pSeq = Fra_SmlSimulateSeq( p->pManAig, p->pPars->nFramesP, nSimWords, 1 );
-    // get the nodes sorted by the number of 1s
-    vNodes = Fra_SmlSortUsingOnes( pSeq, fLatchCorr );
-    // count the total number of implications
-    for ( k = nSimWords * 32; k > 0; k-- )
-    for ( i = k - 1; i > 0; i-- )
-    for ( pNodesI = Vec_PtrEntry( vNodes, i ); *pNodesI; pNodesI++ )
-    for ( pNodesK = Vec_PtrEntry( vNodes, k ); *pNodesK; pNodesK++ )
-        nImpsTotal++;
-
-    // compute implications and their costs
-    pImpCosts = ALLOC( int, nImpMaxLimit );
-    vImps = Vec_IntAlloc( nImpMaxLimit );
-    for ( k = pSeq->nWordsTotal * 32; k > 0; k-- )
-        for ( i = k - 1; i > 0; i-- )
-        {
-            for ( pNodesI = Vec_PtrEntry( vNodes, i ); *pNodesI; pNodesI++ )
-            for ( pNodesK = Vec_PtrEntry( vNodes, k ); *pNodesK; pNodesK++ )
-            {
-                nImpsTried++;
-                if ( !Sml_NodeCheckImp(pSeq, *pNodesI, *pNodesK) )
-                {
-                    nImpsNonSeq++;
-                    continue;
-                }
-                if ( Sml_NodeCheckImp(pComb, *pNodesI, *pNodesK) )
-                {
-                    nImpsComb++;
-                    continue;
-                }
-                nImpsCollected++;
-                Imp = Fra_ImpCreate( *pNodesI, *pNodesK );
-                pImpCosts[ Vec_IntSize(vImps) ] = Sml_NodeNotImpWeight(pComb, *pNodesI, *pNodesK);
-                CostMin = AIG_MIN( CostMin, pImpCosts[ Vec_IntSize(vImps) ] );
-                CostMax = AIG_MAX( CostMax, pImpCosts[ Vec_IntSize(vImps) ] );
-                Vec_IntPush( vImps, Imp );
-                if ( Vec_IntSize(vImps) == nImpMaxLimit )
-                    goto finish;
-            } 
-        }
-finish:
-    Fra_SmlStop( pComb );
-    Fra_SmlStop( pSeq );
-
-    // select implications with the highest cost
-    CostRange = CostMin;
-    if ( Vec_IntSize(vImps) > nImpUseLimit )
-    {
-        vImps = Fra_SmlSelectMaxCost( vTemp = vImps, pImpCosts, nSimWords * 32, nImpUseLimit, &CostRange );
-        Vec_IntFree( vTemp );  
-    }
-
-    // dealloc
-    free( pImpCosts ); 
-    free( Vec_PtrEntry(vNodes, 0) );
-    Vec_PtrFree( vNodes );
-    // reorder implications topologically
-    qsort( (void *)Vec_IntArray(vImps), Vec_IntSize(vImps), sizeof(int), 
-            (int (*)(const void *, const void *)) Sml_CompareMaxId );
-if ( p->pPars->fVerbose )
-{
-printf( "Implications: All = %d. Try = %d. NonSeq = %d. Comb = %d. Res = %d.\n", 
-    nImpsTotal, nImpsTried, nImpsNonSeq, nImpsComb, nImpsCollected );
-printf( "Implication weight: Min = %d. Pivot = %d. Max = %d.   ", 
-       CostMin, CostRange, CostMax );
-PRT( "Time", clock() - clk );
-}
-    return vImps;
-}
-
-
-// the following three procedures are called to 
-// - add implications to the SAT solver
-// - check implications using the SAT solver
-// - refine implications using after a cex is generated
-
-/**Function*************************************************************
-
-  Synopsis    [Add implication clauses to the SAT solver.]
-
-  Description [Note that implications should be checked in the first frame!]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ImpAddToSolver( Fra_Man_t * p, Vec_Int_t * vImps, int * pSatVarNums )
-{
-    sat_solver * pSat = p->pSat;
-    Aig_Obj_t * pLeft, * pRight;
-    Aig_Obj_t * pLeftF, * pRightF;
-    int pLits[2], Imp, Left, Right, i, f, status;
-    int fComplL, fComplR;
-    Vec_IntForEachEntry( vImps, Imp, i )
-    {
-        // get the corresponding nodes
-        pLeft = Aig_ManObj( p->pManAig, Fra_ImpLeft(Imp) );
-        pRight = Aig_ManObj( p->pManAig, Fra_ImpRight(Imp) );
-        // check if all the nodes are present
-        for ( f = 0; f < p->pPars->nFramesK; f++ )
-        {
-            // map these info fraig
-            pLeftF = Fra_ObjFraig( pLeft, f );
-            pRightF = Fra_ObjFraig( pRight, f );
-            if ( Aig_ObjIsNone(Aig_Regular(pLeftF)) || Aig_ObjIsNone(Aig_Regular(pRightF)) )
-            {
-                Vec_IntWriteEntry( vImps, i, 0 );
-                break;
-            }
-        }
-        if ( f < p->pPars->nFramesK )
-            continue;
-        // add constraints in each timeframe
-        for ( f = 0; f < p->pPars->nFramesK; f++ )
-        {
-            // map these info fraig
-            pLeftF = Fra_ObjFraig( pLeft, f );
-            pRightF = Fra_ObjFraig( pRight, f );
-            // get the corresponding SAT numbers
-            Left = pSatVarNums[ Aig_Regular(pLeftF)->Id ];
-            Right = pSatVarNums[ Aig_Regular(pRightF)->Id ];
-            assert( Left > 0  && Left < p->nSatVars );
-            assert( Right > 0 && Right < p->nSatVars );
-            // get the complemented attributes
-            fComplL = pLeft->fPhase ^ Aig_IsComplement(pLeftF);
-            fComplR = pRight->fPhase ^ Aig_IsComplement(pRightF);
-            // get the constraint
-            // L => R      L' v R     (complement = L & R')
-            pLits[0] = 2 * Left  + !fComplL;
-            pLits[1] = 2 * Right +  fComplR;
-            // add contraint to solver
-            if ( !sat_solver_addclause( pSat, pLits, pLits + 2 ) )
-            {
-                sat_solver_delete( pSat );
-                p->pSat = NULL;
-                return;
-            }
-        }
-    }
-    status = sat_solver_simplify(pSat);
-    if ( status == 0 )
-    {
-        sat_solver_delete( pSat );
-        p->pSat = NULL;
-    }
-//    printf( "Total imps = %d. ", Vec_IntSize(vImps) );
-    Fra_ImpCompactArray( vImps );
-//    printf( "Valid imps = %d. \n", Vec_IntSize(vImps) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check implications for the node (if they are present).]
-
-  Description [Returns the new position in the array.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_ImpCheckForNode( Fra_Man_t * p, Vec_Int_t * vImps, Aig_Obj_t * pNode, int Pos )
-{
-    Aig_Obj_t * pLeft, * pRight;
-    Aig_Obj_t * pLeftF, * pRightF;
-    int i, Imp, Left, Right, Max, RetValue;
-    int fComplL, fComplR;
-    Vec_IntForEachEntryStart( vImps, Imp, i, Pos )
-    {
-        if ( Imp == 0 )
-            continue;
-        Left = Fra_ImpLeft(Imp);
-        Right = Fra_ImpRight(Imp);
-        Max = AIG_MAX( Left, Right );
-        assert( Max >= pNode->Id );
-        if ( Max > pNode->Id )
-            return i;
-        // get the corresponding nodes
-        pLeft  = Aig_ManObj( p->pManAig, Left );
-        pRight = Aig_ManObj( p->pManAig, Right );
-        // get the corresponding FRAIG nodes
-        pLeftF  = Fra_ObjFraig( pLeft, p->pPars->nFramesK );
-        pRightF = Fra_ObjFraig( pRight, p->pPars->nFramesK );
-        // get the complemented attributes
-        fComplL = pLeft->fPhase ^ Aig_IsComplement(pLeftF);
-        fComplR = pRight->fPhase ^ Aig_IsComplement(pRightF);
-        // check equality
-        if ( Aig_Regular(pLeftF) == Aig_Regular(pRightF) )
-        {
-            if ( fComplL == fComplR ) // x => x  - always true
-                continue;
-            assert( fComplL != fComplR );
-            // consider 4 possibilities:
-            // NOT(1) => 1    or   0 => 1  - always true
-            // 1 => NOT(1)    or   1 => 0  - never true
-            // NOT(x) => x    or   x       - not always true
-            // x => NOT(x)    or   NOT(x)  - not always true
-            if ( Aig_ObjIsConst1(Aig_Regular(pLeftF)) && fComplL ) // proved implication
-                continue;
-            // disproved implication
-            p->pCla->fRefinement = 1;
-            Vec_IntWriteEntry( vImps, i, 0 );
-            continue;
-        }
-        // check the implication 
-        // - if true, a clause is added
-        // - if false, a cex is simulated
-        // make sure the implication is refined
-        RetValue = Fra_NodesAreImp( p, Aig_Regular(pLeftF), Aig_Regular(pRightF), fComplL, fComplR );
-        if ( RetValue != 1 )
-        {
-            p->pCla->fRefinement = 1;
-            if ( RetValue == 0 )
-                Fra_SmlResimulate( p );
-            if ( Vec_IntEntry(vImps, i) != 0 )
-                printf( "Fra_ImpCheckForNode(): Implication is not refined!\n" );
-            assert( Vec_IntEntry(vImps, i) == 0 );
-        }
-    }
-    return i;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes those implications that no longer hold.]
-
-  Description [Returns 1 if refinement has happened.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_ImpRefineUsingCex( Fra_Man_t * p, Vec_Int_t * vImps )
-{
-    Aig_Obj_t * pLeft, * pRight;
-    int Imp, i, RetValue = 0;
-    Vec_IntForEachEntry( vImps, Imp, i )
-    {
-        if ( Imp == 0 )
-            continue;
-        // get the corresponding nodes
-        pLeft = Aig_ManObj( p->pManAig, Fra_ImpLeft(Imp) );
-        pRight = Aig_ManObj( p->pManAig, Fra_ImpRight(Imp) );
-        // check if implication holds using this simulation info
-        if ( !Sml_NodeCheckImp(p->pSml, pLeft->Id, pRight->Id) )
-        {
-            Vec_IntWriteEntry( vImps, i, 0 );
-            RetValue = 1;
-        }
-    }
-    return RetValue;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes empty implications.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ImpCompactArray( Vec_Int_t * vImps )
-{
-    int i, k, Imp;
-    k = 0;
-    Vec_IntForEachEntry( vImps, Imp, i )
-        if ( Imp )
-            Vec_IntWriteEntry( vImps, k++, Imp );
-    Vec_IntShrink( vImps, k );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Determines the ratio of the state space by computed implications.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-double Fra_ImpComputeStateSpaceRatio( Fra_Man_t * p )
-{
-    int nSimWords = 64;
-    Fra_Sml_t * pComb;
-    unsigned * pResult;
-    double Ratio = 0.0;
-    int Left, Right, Imp, i;
-    if ( p->pCla->vImps == NULL || Vec_IntSize(p->pCla->vImps) == 0 )
-        return Ratio;
-    // simulate the AIG manager with combinational patterns
-    pComb = Fra_SmlSimulateComb( p->pManAig, nSimWords );
-    // go through the implications and collect where they do not hold
-    pResult = Fra_ObjSim( pComb, 0 );
-    assert( pResult[0] == 0 );
-    Vec_IntForEachEntry( p->pCla->vImps, Imp, i )
-    {
-        Left = Fra_ImpLeft(Imp);
-        Right = Fra_ImpRight(Imp);
-        Sml_NodeSaveNotImpPatterns( pComb, Left, Right, pResult );
-    }
-    // count the number of ones in this area
-    Ratio = 100.0 * Fra_SmlCountOnesOne( pComb, 0 ) / (32*(pComb->nWordsTotal-pComb->nWordsPref));
-    Fra_SmlStop( pComb );
-    return Ratio;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of failed implications.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_ImpVerifyUsingSimulation( Fra_Man_t * p )
-{
-    int nFrames = 2000;
-    int nSimWords = 8;
-    Fra_Sml_t * pSeq;
-    char * pfFails;
-    int Left, Right, Imp, i, Counter;
-    if ( p->pCla->vImps == NULL || Vec_IntSize(p->pCla->vImps) == 0 )
-        return 0;
-    // simulate the AIG manager with combinational patterns
-    pSeq = Fra_SmlSimulateSeq( p->pManAig, p->pPars->nFramesP, nFrames, nSimWords );
-    // go through the implications and check how many of them do not hold
-    pfFails = ALLOC( char, Vec_IntSize(p->pCla->vImps) );
-    memset( pfFails, 0, sizeof(char) * Vec_IntSize(p->pCla->vImps) );
-    Vec_IntForEachEntry( p->pCla->vImps, Imp, i )
-    {
-        Left = Fra_ImpLeft(Imp);
-        Right = Fra_ImpRight(Imp);
-        pfFails[i] = !Sml_NodeCheckImp( pSeq, Left, Right );
-    }
-    // count how many has failed
-    Counter = 0;
-    for ( i = 0; i < Vec_IntSize(p->pCla->vImps); i++ )
-        Counter += pfFails[i];
-    free( pfFails );
-    Fra_SmlStop( pSeq );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Record proven implications in the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ImpRecordInManager( Fra_Man_t * p, Aig_Man_t * pNew )
-{
-    Aig_Obj_t * pLeft, * pRight, * pMiter;
-    int nPosOld, Imp, i;
-    if ( p->pCla->vImps == NULL || Vec_IntSize(p->pCla->vImps) == 0 )
-        return;
-    // go through the implication
-    nPosOld = Aig_ManPoNum(pNew);
-    Vec_IntForEachEntry( p->pCla->vImps, Imp, i )
-    {
-        pLeft = Aig_ManObj( p->pManAig, Fra_ImpLeft(Imp) );
-        pRight = Aig_ManObj( p->pManAig, Fra_ImpRight(Imp) );
-        // record the implication: L' + R
-        pMiter = Aig_Or( pNew, 
-            Aig_NotCond(pLeft->pData, !pLeft->fPhase), 
-            Aig_NotCond(pRight->pData, pRight->fPhase) ); 
-        Aig_ObjCreatePo( pNew, pMiter );
-    }
-    pNew->nAsserts = Aig_ManPoNum(pNew) - nPosOld;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraInd.c b/src/aig/fra/fraInd.c
deleted file mode 100644
index f45e8af0..00000000
--- a/src/aig/fra/fraInd.c
+++ /dev/null
@@ -1,479 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraInd.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    [Inductive prover.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraInd.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-#include "cnf.h"
-#include "dar.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Performs AIG rewriting on the constaint manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_FraigInductionRewrite( Fra_Man_t * p )
-{
-    Aig_Man_t * pTemp;
-    Aig_Obj_t * pObj, * pObjPo;
-    int nTruePis, k, i, clk = clock();
-    // perform AIG rewriting on the speculated frames
-    pTemp = Aig_ManDup( p->pManFraig, 0 );
-//    pTemp = Dar_ManRwsat( pTemp, 1, 0 );
-    pTemp = Dar_ManRewriteDefault( pTemp );
-//    printf( "Before = %6d.  After = %6d.\n", Aig_ManNodeNum(p->pManFraig), Aig_ManNodeNum(pTemp) ); 
-//Aig_ManDumpBlif( p->pManFraig, "1.blif" );
-//Aig_ManDumpBlif( pTemp, "2.blif" );
-//    Fra_FramesWriteCone( pTemp );
-//    Aig_ManStop( pTemp );
-    // transfer PI/register pointers
-    assert( p->pManFraig->nRegs == pTemp->nRegs );
-    assert( p->pManFraig->nAsserts == pTemp->nAsserts );
-    nTruePis = Aig_ManPiNum(p->pManAig) - Aig_ManRegNum(p->pManAig);
-    memset( p->pMemFraig, 0, sizeof(Aig_Obj_t *) * p->nSizeAlloc * p->nFramesAll );
-    Fra_ObjSetFraig( Aig_ManConst1(p->pManAig), p->pPars->nFramesK, Aig_ManConst1(pTemp) );
-    Aig_ManForEachPiSeq( p->pManAig, pObj, i )
-        Fra_ObjSetFraig( pObj, p->pPars->nFramesK, Aig_ManPi(pTemp,nTruePis*p->pPars->nFramesK+i) );
-    k = 0;
-    assert( Aig_ManRegNum(p->pManAig) == Aig_ManPoNum(pTemp) - pTemp->nAsserts );
-    Aig_ManForEachLoSeq( p->pManAig, pObj, i )
-    {
-        pObjPo = Aig_ManPo(pTemp, pTemp->nAsserts + k++);
-        Fra_ObjSetFraig( pObj, p->pPars->nFramesK, Aig_ObjChild0(pObjPo) );
-    }
-    // exchange
-    Aig_ManStop( p->pManFraig );
-    p->pManFraig = pTemp;
-p->timeRwr += clock() - clk;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs speculative reduction for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Fra_FramesConstrainNode( Aig_Man_t * pManFraig, Aig_Obj_t * pObj, int iFrame )
-{
-    Aig_Obj_t * pObjNew, * pObjNew2, * pObjRepr, * pObjReprNew, * pMiter;
-    // skip nodes without representative
-    if ( (pObjRepr = Fra_ClassObjRepr(pObj)) == NULL )
-        return;
-    assert( pObjRepr->Id < pObj->Id );
-    // get the new node 
-    pObjNew = Fra_ObjFraig( pObj, iFrame );
-    // get the new node of the representative
-    pObjReprNew = Fra_ObjFraig( pObjRepr, iFrame );
-    // if this is the same node, no need to add constraints
-    if ( Aig_Regular(pObjNew) == Aig_Regular(pObjReprNew) )
-        return;
-    // these are different nodes - perform speculative reduction
-    pObjNew2 = Aig_NotCond( pObjReprNew, pObj->fPhase ^ pObjRepr->fPhase );
-    // set the new node
-    Fra_ObjSetFraig( pObj, iFrame, pObjNew2 );
-    // add the constraint
-    pMiter = Aig_Exor( pManFraig, Aig_Regular(pObjNew), Aig_Regular(pObjReprNew) );
-    pMiter = Aig_NotCond( pMiter, Aig_Regular(pMiter)->fPhase ^ Aig_IsComplement(pMiter) );
-    pMiter = Aig_Not( pMiter );
-    Aig_ObjCreatePo( pManFraig, pMiter );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prepares the inductive case with speculative reduction.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_FramesWithClasses( Fra_Man_t * p )
-{
-    Aig_Man_t * pManFraig;
-    Aig_Obj_t * pObj, * pObjLi, * pObjLo, * pObjNew;
-    int i, k, f;
-    assert( p->pManFraig == NULL );
-    assert( Aig_ManRegNum(p->pManAig) > 0 );
-    assert( Aig_ManRegNum(p->pManAig) < Aig_ManPiNum(p->pManAig) );
-
-    // start the fraig package
-    pManFraig = Aig_ManStart( Aig_ManObjNumMax(p->pManAig) * p->nFramesAll );
-    pManFraig->pName = Aig_UtilStrsav( p->pManAig->pName );
-    pManFraig->nRegs = p->pManAig->nRegs;
-    // create PI nodes for the frames
-    for ( f = 0; f < p->nFramesAll; f++ )
-        Fra_ObjSetFraig( Aig_ManConst1(p->pManAig), f, Aig_ManConst1(pManFraig) );
-    for ( f = 0; f < p->nFramesAll; f++ )
-        Aig_ManForEachPiSeq( p->pManAig, pObj, i )
-            Fra_ObjSetFraig( pObj, f, Aig_ObjCreatePi(pManFraig) );
-    // create latches for the first frame
-    Aig_ManForEachLoSeq( p->pManAig, pObj, i )
-        Fra_ObjSetFraig( pObj, 0, Aig_ObjCreatePi(pManFraig) );
-
-    // add timeframes
-//    pManFraig->fAddStrash = 1;
-    for ( f = 0; f < p->nFramesAll - 1; f++ )
-    {
-        // set the constraints on the latch outputs
-        Aig_ManForEachLoSeq( p->pManAig, pObj, i )
-            Fra_FramesConstrainNode( pManFraig, pObj, f );
-        // add internal nodes of this frame
-        Aig_ManForEachNode( p->pManAig, pObj, i )
-        {
-            pObjNew = Aig_And( pManFraig, Fra_ObjChild0Fra(pObj,f), Fra_ObjChild1Fra(pObj,f) );
-            Fra_ObjSetFraig( pObj, f, pObjNew );
-            Fra_FramesConstrainNode( pManFraig, pObj, f );
-        }
-        // transfer latch input to the latch outputs 
-        Aig_ManForEachLiLoSeq( p->pManAig, pObjLi, pObjLo, k )
-            Fra_ObjSetFraig( pObjLo, f+1, Fra_ObjChild0Fra(pObjLi,f) );
-    }
-//    pManFraig->fAddStrash = 0;
-    // mark the asserts
-    pManFraig->nAsserts = Aig_ManPoNum(pManFraig);
-    // add the POs for the latch outputs of the last frame
-    Aig_ManForEachLoSeq( p->pManAig, pObj, i )
-        Aig_ObjCreatePo( pManFraig, Fra_ObjFraig(pObj,p->nFramesAll-1) );
-
-    // remove dangling nodes
-    Aig_ManCleanup( pManFraig );
-    // make sure the satisfying assignment is node assigned
-    assert( pManFraig->pData == NULL );
-    return pManFraig;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prepares the inductive case with speculative reduction.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_FramesAddMore( Aig_Man_t * p, int nFrames )
-{
-    Aig_Obj_t * pObj, ** pLatches;
-    int i, k, f, nNodesOld;
-    // set copy pointer of each object to point to itself
-    Aig_ManForEachObj( p, pObj, i )
-        pObj->pData = pObj;
-    // iterate and add objects
-    nNodesOld = Aig_ManObjNumMax(p);
-    pLatches = ALLOC( Aig_Obj_t *, Aig_ManRegNum(p) );
-    for ( f = 0; f < nFrames; f++ )
-    {
-        // clean latch inputs and outputs
-        Aig_ManForEachLiSeq( p, pObj, i )
-            pObj->pData = NULL;
-        Aig_ManForEachLoSeq( p, pObj, i )
-            pObj->pData = NULL;
-        // save the latch input values
-        k = 0;
-        Aig_ManForEachLiSeq( p, pObj, i )
-        {
-            if ( Aig_ObjFanin0(pObj)->pData )
-                pLatches[k++] = Aig_ObjChild0Copy(pObj);
-            else
-                pLatches[k++] = NULL;
-        }
-        // insert them as the latch output values
-        k = 0;
-        Aig_ManForEachLoSeq( p, pObj, i )
-            pObj->pData = pLatches[k++];
-        // create the next time frame of nodes
-        Aig_ManForEachNode( p, pObj, i )
-        {
-            if ( i > nNodesOld )
-                break;
-            if ( Aig_ObjFanin0(pObj)->pData && Aig_ObjFanin1(pObj)->pData )
-                pObj->pData = Aig_And( p, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
-            else
-                pObj->pData = NULL;
-        }
-    }
-    free( pLatches );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs choicing of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_FraigInduction( Aig_Man_t * pManAig, int nFramesP, int nFramesK, int nMaxImps, int fRewrite, int fUseImps, int fLatchCorr, int fWriteImps, int fVerbose, int * pnIter )
-{
-    int fUseSimpleCnf = 0;
-    int fUseOldSimulation = 0;
-    // other paramaters affecting performance
-    // - presence of FRAIGing in Abc_NtkDarSeqSweep()
-    // - using distance-1 patterns in Fra_SmlAssignDist1()
-    // - the number of simulation patterns
-    // - the number of BMC frames
-
-    Fra_Man_t * p;
-    Fra_Par_t Pars, * pPars = &Pars; 
-    Aig_Obj_t * pObj;
-    Cnf_Dat_t * pCnf;
-    Aig_Man_t * pManAigNew;
-    int nNodesBeg, nRegsBeg;
-    int nIter, i, clk = clock(), clk2;
-
-    if ( Aig_ManNodeNum(pManAig) == 0 )
-    {
-        if ( pnIter ) *pnIter = 0;
-        return Aig_ManDup(pManAig, 1);
-    }
-    assert( Aig_ManLatchNum(pManAig) == 0 );
-    assert( Aig_ManRegNum(pManAig) > 0 );
-    assert( nFramesK > 0 );
-//Aig_ManShow( pManAig, 0, NULL );
- 
-    nNodesBeg = Aig_ManNodeNum(pManAig);
-    nRegsBeg  = Aig_ManRegNum(pManAig);
-
-    // enhance the AIG by adding timeframes
-//    Fra_FramesAddMore( pManAig, 3 );
-
-    // get parameters
-    Fra_ParamsDefaultSeq( pPars );
-    pPars->nFramesP   = nFramesP;
-    pPars->nFramesK   = nFramesK;
-    pPars->nMaxImps   = nMaxImps;
-    pPars->fVerbose   = fVerbose;
-    pPars->fRewrite   = fRewrite;
-    pPars->fLatchCorr = fLatchCorr;
-    pPars->fUseImps   = fUseImps;
-    pPars->fWriteImps = fWriteImps;
-
-    // start the fraig manager for this run
-    p = Fra_ManStart( pManAig, pPars );
-    // derive and refine e-classes using K initialized frames
-    if ( fUseOldSimulation )
-    {
-        if ( pPars->nFramesP > 0 )
-        {
-            pPars->nFramesP = 0;
-            printf( "Fra_FraigInduction(): Prefix cannot be used.\n" );
-        }
-        p->pSml = Fra_SmlStart( pManAig, 0, pPars->nFramesK + 1, pPars->nSimWords );
-        Fra_SmlSimulate( p, 1 );
-    }
-    else
-    {
-        // bug:  r iscas/blif/s5378.blif    ; st; ssw -v
-        // bug:  r iscas/blif/s1238.blif    ; st; ssw -v
-        // refine the classes with more simulation rounds
-if ( fVerbose )
-printf( "Simulating %d AIG nodes for %d cycles ... ", Aig_ManNodeNum(pManAig), pPars->nFramesP + 32 );
-        p->pSml = Fra_SmlSimulateSeq( pManAig, pPars->nFramesP, 32, 1 ); //pPars->nFramesK + 1, 1 );  
-if ( fVerbose ) 
-{
-PRT( "Time", clock() - clk );
-}
-        Fra_ClassesPrepare( p->pCla, p->pPars->fLatchCorr );
-//        Fra_ClassesPostprocess( p->pCla );
-        // allocate new simulation manager for simulating counter-examples
-        Fra_SmlStop( p->pSml );
-        p->pSml = Fra_SmlStart( pManAig, 0, pPars->nFramesK + 1, pPars->nSimWords );
-    }
-
-    // select the most expressive implications
-    if ( pPars->fUseImps )
-        p->pCla->vImps = Fra_ImpDerive( p, 5000000, pPars->nMaxImps, pPars->fLatchCorr );
-
-    // perform BMC (for the min number of frames)
-    Fra_BmcPerform( p, pPars->nFramesP, pPars->nFramesK+1 ); // +1 is needed to prevent non-refinement
-//Fra_ClassesPrint( p->pCla, 1 );
-//    if ( p->vCex == NULL )
-//        p->vCex = Vec_IntAlloc( 1000 );
-
-    p->nLitsBeg  = Fra_ClassesCountLits( p->pCla );
-    p->nNodesBeg = nNodesBeg; // Aig_ManNodeNum(pManAig);
-    p->nRegsBeg  = nRegsBeg; // Aig_ManRegNum(pManAig);
-
-    // dump AIG of the timeframes
-//    pManAigNew = Fra_ClassesDeriveAig( p->pCla, pPars->nFramesK );
-//    Aig_ManDumpBlif( pManAigNew, "frame_aig.blif" );
-//    Fra_ManPartitionTest2( pManAigNew );
-//    Aig_ManStop( pManAigNew );
-
-    // iterate the inductive case
-    p->pCla->fRefinement = 1;
-    for ( nIter = 0; p->pCla->fRefinement; nIter++ )
-    {
-        int nLitsOld = Fra_ClassesCountLits(p->pCla);
-        int nImpsOld = p->pCla->vImps? Vec_IntSize(p->pCla->vImps) : 0;
-        // mark the classes as non-refined
-        p->pCla->fRefinement = 0;
-        // derive non-init K-timeframes while implementing e-classes
-clk2 = clock();
-        p->pManFraig = Fra_FramesWithClasses( p );
-p->timeTrav += clock() - clk2;
-//Aig_ManDumpBlif( p->pManFraig, "testaig.blif" );
-
-        // perform AIG rewriting
-        if ( p->pPars->fRewrite )
-            Fra_FraigInductionRewrite( p );
-
-        // convert the manager to SAT solver (the last nLatches outputs are inputs)
-        if ( fUseSimpleCnf || pPars->fUseImps )
-            pCnf = Cnf_DeriveSimple( p->pManFraig, Aig_ManRegNum(p->pManFraig) );
-        else
-            pCnf = Cnf_Derive( p->pManFraig, Aig_ManRegNum(p->pManFraig) );
-//Cnf_DataWriteIntoFile( pCnf, "temp.cnf", 1 );
-
-        p->pSat = Cnf_DataWriteIntoSolver( pCnf );
-        p->nSatVars = pCnf->nVars;
-        assert( p->pSat != NULL );
-        if ( p->pSat == NULL )
-            printf( "Fra_FraigInduction(): Computed CNF is not valid.\n" );
-        if ( pPars->fUseImps )
-        {
-            Fra_ImpAddToSolver( p, p->pCla->vImps, pCnf->pVarNums );
-            if ( p->pSat == NULL )
-                printf( "Fra_FraigInduction(): Adding implicationsn to CNF led to a conflict.\n" );
-        }
- 
-        // set the pointers to the manager
-        Aig_ManForEachObj( p->pManFraig, pObj, i )
-            pObj->pData = p;
-
-        // prepare solver for fraiging the last timeframe
-        Fra_ManClean( p, Aig_ManObjNumMax(p->pManFraig) + Aig_ManNodeNum(p->pManAig) );
-
-        // transfer PI/LO variable numbers
-        Aig_ManForEachObj( p->pManFraig, pObj, i )
-        {
-            if ( pCnf->pVarNums[pObj->Id] == -1 )
-                continue;
-            Fra_ObjSetSatNum( pObj, pCnf->pVarNums[pObj->Id] );
-            Fra_ObjSetFaninVec( pObj, (void *)1 );
-        }
-        Cnf_DataFree( pCnf );
-
-        // report the intermediate results
-        if ( fVerbose )
-        {
-            printf( "%3d : Const = %6d. Class = %6d.  L = %6d. LR = %6d.  ", 
-                nIter, Vec_PtrSize(p->pCla->vClasses1), Vec_PtrSize(p->pCla->vClasses), 
-                Fra_ClassesCountLits(p->pCla), p->pManFraig->nAsserts );
-            if ( p->pCla->vImps )
-                printf( "I = %6d. ", Vec_IntSize(p->pCla->vImps) );
-            printf( "NR = %6d.\n", Aig_ManNodeNum(p->pManFraig) );
-        } 
-
-        // perform sweeping
-        p->nSatCallsRecent = 0;
-        p->nSatCallsSkipped = 0;
-        Fra_FraigSweep( p );
-
-//        Sat_SolverPrintStats( stdout, p->pSat );
-
-        // remove FRAIG and SAT solver
-        Aig_ManStop( p->pManFraig );   p->pManFraig = NULL;
-        sat_solver_delete( p->pSat );  p->pSat = NULL; 
-        memset( p->pMemFraig, 0, sizeof(Aig_Obj_t *) * p->nSizeAlloc * p->nFramesAll );
-//        printf( "Recent SAT called = %d. Skipped = %d.\n", p->nSatCallsRecent, p->nSatCallsSkipped );
-        assert( p->vTimeouts == NULL );
-        if ( p->vTimeouts )
-           printf( "Fra_FraigInduction(): SAT solver timed out!\n" );
-        // check if refinement has happened
-//        p->pCla->fRefinement = (int)(nLitsOld != Fra_ClassesCountLits(p->pCla));
-        if ( p->pCla->fRefinement && 
-            nLitsOld == Fra_ClassesCountLits(p->pCla) && 
-            nImpsOld == (p->pCla->vImps? Vec_IntSize(p->pCla->vImps) : 0) )
-        {
-            printf( "Fra_FraigInduction(): Internal error. The result may not verify.\n" );
-            break;
-        }
-    }
-/*
-    // verify implications using simulation
-    if ( p->pCla->vImps && Vec_IntSize(p->pCla->vImps) )
-    {
-        int Temp, clk = clock();
-        if ( Temp = Fra_ImpVerifyUsingSimulation( p ) )
-            printf( "Implications failing the simulation test = %d (out of %d).  ", Temp, Vec_IntSize(p->pCla->vImps) );
-        else
-            printf( "All %d implications have passed the simulation test.  ", Vec_IntSize(p->pCla->vImps) );
-        PRT( "Time", clock() - clk );
-    }
-*/
-
-    // move the classes into representatives and reduce AIG
-clk2 = clock();
-//    Fra_ClassesPrint( p->pCla, 1 );
-    Fra_ClassesSelectRepr( p->pCla );
-    Fra_ClassesCopyReprs( p->pCla, p->vTimeouts );
-    pManAigNew = Aig_ManDupRepr( pManAig, 0 );
-    // add implications to the manager
-    if ( fWriteImps && p->pCla->vImps && Vec_IntSize(p->pCla->vImps) )
-        Fra_ImpRecordInManager( p, pManAigNew );
-    // cleanup the new manager
-    Aig_ManSeqCleanup( pManAigNew );
-//    Aig_ManCountMergeRegs( pManAigNew );
-p->timeTrav += clock() - clk2;
-p->timeTotal = clock() - clk;
-    // get the final stats
-    p->nLitsEnd  = Fra_ClassesCountLits( p->pCla );
-    p->nNodesEnd = Aig_ManNodeNum(pManAigNew);
-    p->nRegsEnd  = Aig_ManRegNum(pManAigNew);
-    // free the manager
-    Fra_ManStop( p );
-    // check the output
-//    if ( Aig_ManPoNum(pManAigNew) - Aig_ManRegNum(pManAigNew) == 1 )
-//        if ( Aig_ObjChild0( Aig_ManPo(pManAigNew,0) ) == Aig_ManConst0(pManAigNew) )
-//            printf( "Proved output constant 0.\n" );
-    if ( pnIter ) *pnIter = nIter;
-    return pManAigNew;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraLcr.c b/src/aig/fra/fraLcr.c
deleted file mode 100644
index 50fd6687..00000000
--- a/src/aig/fra/fraLcr.c
+++ /dev/null
@@ -1,655 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraLcorr.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    [Latch correspondence computation.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraLcorr.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Fra_Lcr_t_    Fra_Lcr_t;
-struct Fra_Lcr_t_
-{
-    // original AIG
-    Aig_Man_t *      pAig;
-    // equivalence class representation
-    Fra_Cla_t *      pCla;       
-    // partitioning information
-    Vec_Ptr_t *      vParts;        // output partitions
-    int *            pInToOutPart;  // mapping of PI num into PO partition num
-    int *            pInToOutNum;   // mapping of PI num into the num of this PO in the partition
-    // AIGs for the partitions
-    Vec_Ptr_t *      vFraigs;
-    // other variables
-    int              fRefining; 
-    // parameters
-    int              nFramesP;
-    int              fVerbose;
-    // statistics
-    int              nIters;
-    int              nLitsBeg;
-    int              nLitsEnd;
-    int              nNodesBeg;
-    int              nNodesEnd;
-    int              nRegsBeg;
-    int              nRegsEnd;
-    // runtime
-    int              timeSim;
-    int              timePart;
-    int              timeTrav;
-    int              timeFraig;
-    int              timeUpdate;
-    int              timeTotal;
-};
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates the retiming manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Fra_Lcr_t * Lcr_ManAlloc( Aig_Man_t * pAig )
-{
-    Fra_Lcr_t * p;
-    p = ALLOC( Fra_Lcr_t, 1 );
-    memset( p, 0, sizeof(Fra_Lcr_t) );
-    p->pAig = pAig;
-    p->pInToOutPart = ALLOC( int, Aig_ManPiNum(pAig) );
-    memset( p->pInToOutPart, 0, sizeof(int) * Aig_ManPiNum(pAig) );
-    p->pInToOutNum = ALLOC( int, Aig_ManPiNum(pAig) );
-    memset( p->pInToOutNum, 0, sizeof(int) * Aig_ManPiNum(pAig) );
-    p->vFraigs = Vec_PtrAlloc( 1000 );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints stats for the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Lcr_ManPrint( Fra_Lcr_t * p )
-{
-    printf( "Iterations = %d.  LitBeg = %d.  LitEnd = %d. (%6.2f %%).\n", 
-        p->nIters, p->nLitsBeg, p->nLitsEnd, 100.0*p->nLitsEnd/p->nLitsBeg );
-    printf( "NBeg = %d. NEnd = %d. (Gain = %6.2f %%).  RBeg = %d. REnd = %d. (Gain = %6.2f %%).\n", 
-        p->nNodesBeg, p->nNodesEnd, 100.0*(p->nNodesBeg-p->nNodesEnd)/p->nNodesBeg, 
-        p->nRegsBeg, p->nRegsEnd, 100.0*(p->nRegsBeg-p->nRegsEnd)/p->nRegsBeg );
-    PRT( "AIG simulation  ", p->timeSim  );
-    PRT( "AIG partitioning", p->timePart );
-    PRT( "AIG rebuiding   ", p->timeTrav );
-    PRT( "FRAIGing        ", p->timeFraig );
-    PRT( "AIG updating    ", p->timeUpdate );
-    PRT( "TOTAL RUNTIME   ", p->timeTotal );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deallocates the retiming manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Lcr_ManFree( Fra_Lcr_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    if ( p->fVerbose )
-        Lcr_ManPrint( p );
-    Aig_ManForEachPi( p->pAig, pObj, i )
-        pObj->pNext = NULL;
-    Vec_PtrFree( p->vFraigs );
-    if ( p->pCla  )     Fra_ClassesStop( p->pCla );
-    if ( p->vParts  )   Vec_VecFree( (Vec_Vec_t *)p->vParts );
-    free( p->pInToOutPart );
-    free( p->pInToOutNum );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prepare the AIG for class computation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Fra_Man_t * Fra_LcrAigPrepare( Aig_Man_t * pAig )
-{
-    Fra_Man_t * p;
-    Aig_Obj_t * pObj;
-    int i;
-    p = ALLOC( Fra_Man_t, 1 );
-    memset( p, 0, sizeof(Fra_Man_t) );
-    Aig_ManForEachPi( pAig, pObj, i )
-        pObj->pData = p;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prepare the AIG for class computation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_LcrAigPrepareTwo( Aig_Man_t * pAig, Fra_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManForEachPi( pAig, pObj, i )
-        pObj->pData = p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compares two nodes for equivalence after partitioned fraiging.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_LcrNodesAreEqual( Aig_Obj_t * pObj0, Aig_Obj_t * pObj1 )
-{
-    Fra_Man_t * pTemp = pObj0->pData;
-    Fra_Lcr_t * pLcr = (Fra_Lcr_t *)pTemp->pBmc;
-    Aig_Man_t * pFraig;
-    Aig_Obj_t * pOut0, * pOut1;
-    int nPart0, nPart1;
-    assert( Aig_ObjIsPi(pObj0) );
-    assert( Aig_ObjIsPi(pObj1) );
-    // find the partition to which these nodes belong
-    nPart0 = pLcr->pInToOutPart[(int)pObj0->pNext];
-    nPart1 = pLcr->pInToOutPart[(int)pObj1->pNext];
-    // if this is the result of refinement of the class created const-1 nodes
-    // the nodes may end up in different partions - we assume them equivalent
-    if ( nPart0 != nPart1 )
-    {
-        assert( 0 );
-        return 1;
-    }
-    assert( nPart0 == nPart1 );
-    pFraig = Vec_PtrEntry( pLcr->vFraigs, nPart0 );
-    // get the fraig outputs
-    pOut0 = Aig_ManPo( pFraig, pLcr->pInToOutNum[(int)pObj0->pNext] );
-    pOut1 = Aig_ManPo( pFraig, pLcr->pInToOutNum[(int)pObj1->pNext] );
-    return Aig_ObjFanin0(pOut0) == Aig_ObjFanin0(pOut1);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compares the node with a constant after partioned fraiging.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_LcrNodeIsConst( Aig_Obj_t * pObj )
-{
-    Fra_Man_t * pTemp = pObj->pData;
-    Fra_Lcr_t * pLcr = (Fra_Lcr_t *)pTemp->pBmc;
-    Aig_Man_t * pFraig;
-    Aig_Obj_t * pOut;
-    int nPart;
-    assert( Aig_ObjIsPi(pObj) );
-    // find the partition to which these nodes belong
-    nPart = pLcr->pInToOutPart[(int)pObj->pNext];
-    pFraig = Vec_PtrEntry( pLcr->vFraigs, nPart );
-    // get the fraig outputs
-    pOut = Aig_ManPo( pFraig, pLcr->pInToOutNum[(int)pObj->pNext] );
-    return Aig_ObjFanin0(pOut) == Aig_ManConst1(pFraig);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Give the AIG and classes, reduces AIG for partitioning.]
-
-  Description [Ignores registers that are not in the classes. 
-  Places candidate equivalent classes of registers into single outputs 
-  (for ease of partitioning). The resulting combinational AIG contains 
-  outputs in the same order as equivalence classes of registers, 
-  followed by constant-1 registers. Preserves the set of all inputs.
-  Complemented attributes of the outputs do not matter because we need 
-  then only for collecting the structural info.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_LcrDeriveAigForPartitioning( Fra_Lcr_t * pLcr )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pObj, * pObjPo, * pObjNew, ** ppClass, * pMiter;
-    int i, c, Offset;
-    // remember the numbers of the inputs of the original AIG
-    Aig_ManForEachPi( pLcr->pAig, pObj, i )
-    {
-        pObj->pData = pLcr;
-        pObj->pNext = (Aig_Obj_t *)i;
-    }
-    // compute the LO/LI offset
-    Offset = Aig_ManPoNum(pLcr->pAig) - Aig_ManPiNum(pLcr->pAig);
-    // create the PIs
-    Aig_ManCleanData( pLcr->pAig );
-    pNew = Aig_ManStartFrom( pLcr->pAig );
-    // go over the equivalence classes
-    Vec_PtrForEachEntry( pLcr->pCla->vClasses, ppClass, i )
-    {
-        pMiter = Aig_ManConst0(pNew);
-        for ( c = 0; ppClass[c]; c++ )
-        {
-            assert( Aig_ObjIsPi(ppClass[c]) );
-            pObjPo  = Aig_ManPo( pLcr->pAig, Offset+(int)ppClass[c]->pNext );
-            pObjNew = Aig_ManDup_rec( pNew, pLcr->pAig, Aig_ObjFanin0(pObjPo) );
-            pMiter  = Aig_Exor( pNew, pMiter, pObjNew );
-        }
-        Aig_ObjCreatePo( pNew, pMiter );
-    }
-    // go over the constant candidates
-    Vec_PtrForEachEntry( pLcr->pCla->vClasses1, pObj, i )
-    {
-        assert( Aig_ObjIsPi(pObj) );
-        pObjPo = Aig_ManPo( pLcr->pAig, Offset+(int)pObj->pNext );
-        pMiter = Aig_ManDup_rec( pNew, pLcr->pAig, Aig_ObjFanin0(pObjPo) );
-        Aig_ObjCreatePo( pNew, pMiter );
-    }
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Remaps partitions into the inputs of original AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_LcrRemapPartitions( Vec_Ptr_t * vParts, Fra_Cla_t * pCla, int * pInToOutPart, int * pInToOutNum )
-{
-    Vec_Int_t * vOne, * vOneNew;
-    Aig_Obj_t ** ppClass, * pObjPi;
-    int Out, Offset, i, k, c;
-    // compute the LO/LI offset
-    Offset = Aig_ManPoNum(pCla->pAig) - Aig_ManPiNum(pCla->pAig);
-    Vec_PtrForEachEntry( vParts, vOne, i )
-    {
-        vOneNew = Vec_IntAlloc( Vec_IntSize(vOne) );
-        Vec_IntForEachEntry( vOne, Out, k )
-        {
-            if ( Out < Vec_PtrSize(pCla->vClasses) )
-            {
-                ppClass = Vec_PtrEntry( pCla->vClasses, Out );
-                for ( c = 0; ppClass[c]; c++ )
-                {
-                    pInToOutPart[(int)ppClass[c]->pNext] = i;
-                    pInToOutNum[(int)ppClass[c]->pNext] = Vec_IntSize(vOneNew);
-                    Vec_IntPush( vOneNew, Offset+(int)ppClass[c]->pNext );
-                }
-            }
-            else
-            {
-                pObjPi = Vec_PtrEntry( pCla->vClasses1, Out - Vec_PtrSize(pCla->vClasses) );
-                pInToOutPart[(int)pObjPi->pNext] = i;
-                pInToOutNum[(int)pObjPi->pNext] = Vec_IntSize(vOneNew);
-                Vec_IntPush( vOneNew, Offset+(int)pObjPi->pNext );
-            }
-        }
-        // replace the class
-        Vec_PtrWriteEntry( vParts, i, vOneNew );
-        Vec_IntFree( vOne );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates AIG of one partition with speculative reduction.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Fra_LcrCreatePart_rec( Fra_Cla_t * pCla, Aig_Man_t * pNew, Aig_Man_t * p, Aig_Obj_t * pObj )
-{
-    assert( !Aig_IsComplement(pObj) );
-    if ( Aig_ObjIsTravIdCurrent(p, pObj) )
-        return pObj->pData;
-    Aig_ObjSetTravIdCurrent(p, pObj);
-    if ( Aig_ObjIsPi(pObj) )
-    {
-//        Aig_Obj_t * pRepr = Fra_ClassObjRepr(pObj);
-        Aig_Obj_t * pRepr = pCla->pMemRepr[pObj->Id];
-        if ( pRepr == NULL )
-            pObj->pData = Aig_ObjCreatePi( pNew );
-        else
-        {
-            pObj->pData = Fra_LcrCreatePart_rec( pCla, pNew, p, pRepr );
-            pObj->pData = Aig_NotCond( pObj->pData, pRepr->fPhase ^ pObj->fPhase );
-        }
-        return pObj->pData;
-    }
-    Fra_LcrCreatePart_rec( pCla, pNew, p, Aig_ObjFanin0(pObj) );
-    Fra_LcrCreatePart_rec( pCla, pNew, p, Aig_ObjFanin1(pObj) );
-    return pObj->pData = Aig_And( pNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates AIG of one partition with speculative reduction.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_LcrCreatePart( Fra_Lcr_t * p, Vec_Int_t * vPart )
-{
-    Aig_Man_t * pNew;
-    Aig_Obj_t * pObj, * pObjNew;
-    int Out, i;
-    // create new AIG for this partition
-    pNew = Aig_ManStartFrom( p->pAig );
-    Aig_ManIncrementTravId( p->pAig );
-    Aig_ObjSetTravIdCurrent( p->pAig, Aig_ManConst1(p->pAig) );
-    Aig_ManConst1(p->pAig)->pData = Aig_ManConst1(pNew);
-    Vec_IntForEachEntry( vPart, Out, i )
-    {
-        pObj = Aig_ManPo( p->pAig, Out );
-        if ( pObj->fMarkA )
-        {
-            pObjNew = Fra_LcrCreatePart_rec( p->pCla, pNew, p->pAig, Aig_ObjFanin0(pObj) );
-            pObjNew = Aig_NotCond( pObjNew, Aig_ObjFaninC0(pObj) );
-        }
-        else
-            pObjNew = Aig_ManConst1( pNew );
-        Aig_ObjCreatePo( pNew, pObjNew ); 
-    }
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Marks the nodes belonging to the equivalence classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassNodesMark( Fra_Lcr_t * p )
-{
-    Aig_Obj_t * pObj, ** ppClass;
-    int i, c, Offset;
-    // compute the LO/LI offset
-    Offset = Aig_ManPoNum(p->pCla->pAig) - Aig_ManPiNum(p->pCla->pAig);
-    // mark the nodes remaining in the classes
-    Vec_PtrForEachEntry( p->pCla->vClasses1, pObj, i )
-    {
-        pObj = Aig_ManPo( p->pCla->pAig, Offset+(int)pObj->pNext );
-        pObj->fMarkA = 1;
-    }
-    Vec_PtrForEachEntry( p->pCla->vClasses, ppClass, i )
-    {
-        for ( c = 0; ppClass[c]; c++ )
-        {
-            pObj = Aig_ManPo( p->pCla->pAig, Offset+(int)ppClass[c]->pNext );
-            pObj->fMarkA = 1;
-        }
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Unmarks the nodes belonging to the equivalence classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ClassNodesUnmark( Fra_Lcr_t * p )
-{
-    Aig_Obj_t * pObj, ** ppClass;
-    int i, c, Offset;
-    // compute the LO/LI offset
-    Offset = Aig_ManPoNum(p->pCla->pAig) - Aig_ManPiNum(p->pCla->pAig);
-    // mark the nodes remaining in the classes
-    Vec_PtrForEachEntry( p->pCla->vClasses1, pObj, i )
-    {
-        pObj = Aig_ManPo( p->pCla->pAig, Offset+(int)pObj->pNext );
-        pObj->fMarkA = 0;
-    }
-    Vec_PtrForEachEntry( p->pCla->vClasses, ppClass, i )
-    {
-        for ( c = 0; ppClass[c]; c++ )
-        {
-            pObj = Aig_ManPo( p->pCla->pAig, Offset+(int)ppClass[c]->pNext );
-            pObj->fMarkA = 0;
-        }
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs choicing of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_FraigLatchCorrespondence( Aig_Man_t * pAig, int nFramesP, int nConfMax, int fProve, int fVerbose, int * pnIter )
-{
-    int nPartSize    = 200;
-    int fReprSelect  = 0;
-
-    Fra_Lcr_t * p;
-    Fra_Sml_t * pSml;
-    Fra_Man_t * pTemp;
-    Aig_Man_t * pAigPart, * pAigNew = NULL;
-    Vec_Int_t * vPart;
-//    Aig_Obj_t * pObj = Aig_ManObj(pAig, 2078);
-    int i, nIter, timeSim, clk = clock(), clk2, clk3;
-    if ( Aig_ManNodeNum(pAig) == 0 )
-    {
-        if ( pnIter ) *pnIter = 0;
-        return Aig_ManDup(pAig, 1);
-    }
-    assert( Aig_ManLatchNum(pAig) == 0 );
-    assert( Aig_ManRegNum(pAig) > 0 );
-
-    // simulate the AIG 
-clk2 = clock();
-if ( fVerbose )
-printf( "Simulating AIG with %d nodes for %d cycles ...  ", Aig_ManNodeNum(pAig), nFramesP + 32 );
-    pSml = Fra_SmlSimulateSeq( pAig, nFramesP, 32, 1 ); 
-if ( fVerbose ) 
-{
-PRT( "Time", clock() - clk2 );
-timeSim = clock() - clk2;
-}
-    // check if simulation discovered non-constant-0 POs
-    if ( fProve && pSml->fNonConstOut )
-    {
-        Fra_SmlStop( pSml );
-        return NULL;
-    }
-
-    // start the manager
-    p = Lcr_ManAlloc( pAig );
-    p->nFramesP = nFramesP;
-    p->fVerbose = fVerbose;
-    p->timeSim += timeSim;
-
-    pTemp = Fra_LcrAigPrepare( pAig );
-    pTemp->pBmc = (Fra_Bmc_t *)p;
-    pTemp->pSml = pSml;
-
-    // get preliminary info about equivalence classes
-    pTemp->pCla = p->pCla = Fra_ClassesStart( p->pAig );
-    Fra_ClassesPrepare( p->pCla, 1 );
-    p->pCla->pFuncNodeIsConst   = Fra_LcrNodeIsConst;
-    p->pCla->pFuncNodesAreEqual = Fra_LcrNodesAreEqual;
-    Fra_SmlStop( pTemp->pSml );
-
-    // partition the AIG for latch correspondence computation
-clk2 = clock();
-if ( fVerbose )
-printf( "Partitioning AIG ...  " );
-    pAigPart = Fra_LcrDeriveAigForPartitioning( p );
-    p->vParts = (Vec_Ptr_t *)Aig_ManPartitionSmart( pAigPart, nPartSize, 0, NULL );
-    Fra_LcrRemapPartitions( p->vParts, p->pCla, p->pInToOutPart, p->pInToOutNum );
-    Aig_ManStop( pAigPart );
-if ( fVerbose ) 
-{
-PRT( "Time", clock() - clk2 );
-p->timePart += clock() - clk2;
-}
-
-    // get the initial stats
-    p->nLitsBeg  = Fra_ClassesCountLits( p->pCla );
-    p->nNodesBeg = Aig_ManNodeNum(p->pAig);
-    p->nRegsBeg  = Aig_ManRegNum(p->pAig);
-
-    // perforn interative reduction of the partitions
-    p->fRefining = 1;
-    for ( nIter = 0; p->fRefining; nIter++ )
-    {
-        p->fRefining = 0;
-        clk3 = clock();
-        // derive AIGs for each partition
-        Fra_ClassNodesMark( p );
-        Vec_PtrClear( p->vFraigs );
-        Vec_PtrForEachEntry( p->vParts, vPart, i )
-        {
-clk2 = clock();
-            pAigPart = Fra_LcrCreatePart( p, vPart );
-p->timeTrav += clock() - clk2;
-clk2 = clock();
-            pAigNew  = Fra_FraigEquivence( pAigPart, nConfMax );
-p->timeFraig += clock() - clk2;
-            Vec_PtrPush( p->vFraigs, pAigNew );
-            Aig_ManStop( pAigPart );
-        }
-        Fra_ClassNodesUnmark( p );
-        // report the intermediate results
-        if ( fVerbose )
-        {
-            printf( "%3d : Const = %6d. Class = %6d.  L = %6d. Part = %3d.  ", 
-                nIter, Vec_PtrSize(p->pCla->vClasses1), Vec_PtrSize(p->pCla->vClasses), 
-                Fra_ClassesCountLits(p->pCla), Vec_PtrSize(p->vParts) );
-            PRT( "T", clock() - clk3 );
-        }
-        // refine the classes
-        Fra_LcrAigPrepareTwo( p->pAig, pTemp );
-        if ( Fra_ClassesRefine( p->pCla ) )
-            p->fRefining = 1;
-        if ( Fra_ClassesRefine1( p->pCla, 0, NULL ) )
-            p->fRefining = 1;
-        // clean the fraigs
-        Vec_PtrForEachEntry( p->vFraigs, pAigPart, i )
-            Aig_ManStop( pAigPart );
-
-        // repartition if needed
-        if ( 1 )
-        {
-clk2 = clock();
-            Vec_VecFree( (Vec_Vec_t *)p->vParts );
-            pAigPart = Fra_LcrDeriveAigForPartitioning( p );
-            p->vParts = (Vec_Ptr_t *)Aig_ManPartitionSmart( pAigPart, nPartSize, 0, NULL );
-            Fra_LcrRemapPartitions( p->vParts, p->pCla, p->pInToOutPart, p->pInToOutNum );
-            Aig_ManStop( pAigPart );
-p->timePart += clock() - clk2;
-        }
-    }
-    free( pTemp );
-    p->nIters = nIter;
-
-    // move the classes into representatives and reduce AIG
-clk2 = clock();
-//    Fra_ClassesPrint( p->pCla, 1 );
-    if ( fReprSelect )
-        Fra_ClassesSelectRepr( p->pCla );
-    Fra_ClassesCopyReprs( p->pCla, NULL );
-    pAigNew = Aig_ManDupRepr( p->pAig, 0 );
-    Aig_ManSeqCleanup( pAigNew );
-//    Aig_ManCountMergeRegs( pAigNew );
-p->timeUpdate += clock() - clk2;
-p->timeTotal = clock() - clk;
-    // get the final stats
-    p->nLitsEnd  = Fra_ClassesCountLits( p->pCla );
-    p->nNodesEnd = Aig_ManNodeNum(pAigNew);
-    p->nRegsEnd  = Aig_ManRegNum(pAigNew);
-    Lcr_ManFree( p );
-    if ( pnIter ) *pnIter = nIter;
-    return pAigNew;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraMan.c b/src/aig/fra/fraMan.c
deleted file mode 100644
index f505b0c2..00000000
--- a/src/aig/fra/fraMan.c
+++ /dev/null
@@ -1,304 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraMan.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    [Starts the FRAIG manager.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraMan.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the default solving parameters.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ParamsDefault( Fra_Par_t * pPars )
-{
-    memset( pPars, 0, sizeof(Fra_Par_t) );
-    pPars->nSimWords        =       32;  // the number of words in the simulation info
-    pPars->dSimSatur        =    0.005;  // the ratio of refined classes when saturation is reached
-    pPars->fPatScores       =        0;  // enables simulation pattern scoring
-    pPars->MaxScore         =       25;  // max score after which resimulation is used
-    pPars->fDoSparse        =        1;  // skips sparse functions
-//    pPars->dActConeRatio    =     0.05;  // the ratio of cone to be bumped
-//    pPars->dActConeBumpMax  =      5.0;  // the largest bump of activity
-    pPars->dActConeRatio    =      0.3;  // the ratio of cone to be bumped
-    pPars->dActConeBumpMax  =     10.0;  // the largest bump of activity
-    pPars->nBTLimitNode     =      100;  // conflict limit at a node
-    pPars->nBTLimitMiter    =   500000;  // conflict limit at an output
-    pPars->nFramesK         =        0;  // the number of timeframes to unroll
-    pPars->fConeBias        =        1;
-    pPars->fRewrite         =        0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the default solving parameters.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ParamsDefaultSeq( Fra_Par_t * pPars )
-{
-    memset( pPars, 0, sizeof(Fra_Par_t) );
-    pPars->nSimWords        =        1;  // the number of words in the simulation info
-    pPars->dSimSatur        =    0.005;  // the ratio of refined classes when saturation is reached
-    pPars->fPatScores       =        0;  // enables simulation pattern scoring
-    pPars->MaxScore         =       25;  // max score after which resimulation is used
-    pPars->fDoSparse        =        1;  // skips sparse functions
-    pPars->dActConeRatio    =      0.3;  // the ratio of cone to be bumped
-    pPars->dActConeBumpMax  =     10.0;  // the largest bump of activity
-    pPars->nBTLimitNode     = 10000000;  // conflict limit at a node
-    pPars->nBTLimitMiter    =   500000;  // conflict limit at an output
-    pPars->nFramesK         =        1;  // the number of timeframes to unroll
-    pPars->fConeBias        =        0;
-    pPars->fRewrite         =        0;
-    pPars->fLatchCorr       =        0;
-} 
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Fra_Man_t * Fra_ManStart( Aig_Man_t * pManAig, Fra_Par_t * pPars )
-{
-    Fra_Man_t * p;
-    Aig_Obj_t * pObj;
-    int i;
-    // allocate the fraiging manager
-    p = ALLOC( Fra_Man_t, 1 );
-    memset( p, 0, sizeof(Fra_Man_t) );
-    p->pPars      = pPars;
-    p->pManAig    = pManAig;
-    p->nSizeAlloc = Aig_ManObjNumMax( pManAig );
-    p->nFramesAll = pPars->nFramesK + 1;
-    // allocate storage for sim pattern
-    p->nPatWords  = Aig_BitWordNum( (Aig_ManPiNum(pManAig) - Aig_ManRegNum(pManAig)) * p->nFramesAll + Aig_ManRegNum(pManAig) );
-    p->pPatWords  = ALLOC( unsigned, p->nPatWords ); 
-    p->vPiVars    = Vec_PtrAlloc( 100 );
-    // equivalence classes
-    p->pCla       = Fra_ClassesStart( pManAig );
-    // allocate other members
-    p->pMemFraig  = ALLOC( Aig_Obj_t *, p->nSizeAlloc * p->nFramesAll );
-    memset( p->pMemFraig, 0, sizeof(Aig_Obj_t *) * p->nSizeAlloc * p->nFramesAll );
-    // set random number generator
-    srand( 0xABCABC );
-    // set the pointer to the manager
-    Aig_ManForEachObj( p->pManAig, pObj, i )
-        pObj->pData = p;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ManClean( Fra_Man_t * p, int nNodesMax )
-{
-    int i;
-    // remove old arrays
-    for ( i = 0; i < p->nMemAlloc; i++ )
-        if ( p->pMemFanins[i] && p->pMemFanins[i] != (void *)1 )
-            Vec_PtrFree( p->pMemFanins[i] );
-    // realloc for the new size
-    if ( p->nMemAlloc < nNodesMax )
-    {
-        int nMemAllocNew = nNodesMax + 5000;
-        p->pMemFanins = REALLOC( Vec_Ptr_t *, p->pMemFanins, nMemAllocNew );
-        p->pMemSatNums = REALLOC( int, p->pMemSatNums, nMemAllocNew );
-        p->nMemAlloc = nMemAllocNew;
-    }
-    // prepare for the new run
-    memset( p->pMemFanins, 0, sizeof(Vec_Ptr_t *) * p->nMemAlloc );
-    memset( p->pMemSatNums, 0, sizeof(int) * p->nMemAlloc );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prepares the new manager to begin fraiging.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Fra_ManPrepareComb( Fra_Man_t * p )
-{
-    Aig_Man_t * pManFraig;
-    Aig_Obj_t * pObj;
-    int i;
-    assert( p->pManFraig == NULL );
-    // start the fraig package
-    pManFraig = Aig_ManStart( Aig_ManObjNumMax(p->pManAig) );
-    pManFraig->pName = Aig_UtilStrsav( p->pManAig->pName );
-    pManFraig->nRegs    = p->pManAig->nRegs;
-    pManFraig->nAsserts = p->pManAig->nAsserts;
-    // set the pointers to the available fraig nodes
-    Fra_ObjSetFraig( Aig_ManConst1(p->pManAig), 0, Aig_ManConst1(pManFraig) );
-    Aig_ManForEachPi( p->pManAig, pObj, i )
-        Fra_ObjSetFraig( pObj, 0, Aig_ObjCreatePi(pManFraig) );
-    // set the pointers to the manager
-    Aig_ManForEachObj( pManFraig, pObj, i )
-        pObj->pData = p;
-    // allocate memory for mapping FRAIG nodes into SAT numbers and fanins
-    p->nMemAlloc = p->nSizeAlloc;
-    p->pMemFanins = ALLOC( Vec_Ptr_t *, p->nMemAlloc );
-    memset( p->pMemFanins, 0, sizeof(Vec_Ptr_t *) * p->nMemAlloc );
-    p->pMemSatNums = ALLOC( int, p->nMemAlloc );
-    memset( p->pMemSatNums, 0, sizeof(int) * p->nMemAlloc );
-    // make sure the satisfying assignment is node assigned
-    assert( pManFraig->pData == NULL );
-    return pManFraig;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Finalizes the combinational miter after fraiging.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ManFinalizeComb( Fra_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    // add the POs
-    Aig_ManForEachPo( p->pManAig, pObj, i )
-        Aig_ObjCreatePo( p->pManFraig, Fra_ObjChild0Fra(pObj,0) );
-    // postprocess
-    Aig_ManCleanMarkB( p->pManFraig );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ManStop( Fra_Man_t * p )
-{
-    if ( p->pPars->fVerbose )
-        Fra_ManPrint( p );
-    // save mapping from original nodes into FRAIG nodes
-    if ( p->pManAig )
-    {
-        if ( p->pManAig->pObjCopies )
-            free( p->pManAig->pObjCopies );
-        p->pManAig->pObjCopies = p->pMemFraig;
-        p->pMemFraig = NULL;
-    }
-    Fra_ManClean( p, 0 );
-    if ( p->vTimeouts ) Vec_PtrFree( p->vTimeouts );
-    if ( p->vPiVars )   Vec_PtrFree( p->vPiVars );
-    if ( p->pSat )      sat_solver_delete( p->pSat );
-    if ( p->pCla  )     Fra_ClassesStop( p->pCla );
-    if ( p->pSml )      Fra_SmlStop( p->pSml );
-    if ( p->vCex )      Vec_IntFree( p->vCex );
-    FREE( p->pMemFraig );
-    FREE( p->pMemFanins );
-    FREE( p->pMemSatNums );
-    FREE( p->pPatWords );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints stats for the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ManPrint( Fra_Man_t * p )
-{
-    double nMemory = 1.0*Aig_ManObjNumMax(p->pManAig)*(p->pSml->nWordsTotal*sizeof(unsigned)+6*sizeof(void*))/(1<<20);
-    printf( "SimWord = %d. Round = %d.  Mem = %0.2f Mb.  LitBeg = %d.  LitEnd = %d. (%6.2f %%).\n", 
-        p->pPars->nSimWords, p->pSml->nSimRounds, nMemory, p->nLitsBeg, p->nLitsEnd, 100.0*p->nLitsEnd/(p->nLitsBeg?p->nLitsBeg:1) );
-    printf( "Proof = %d. Cex = %d. Fail = %d. FailReal = %d. C-lim = %d. ImpRatio = %6.2f %%\n", 
-        p->nSatProof, p->nSatCallsSat, p->nSatFails, p->nSatFailsReal, p->pPars->nBTLimitNode, Fra_ImpComputeStateSpaceRatio(p) );
-    printf( "NBeg = %d. NEnd = %d. (Gain = %6.2f %%).  RBeg = %d. REnd = %d. (Gain = %6.2f %%).\n", 
-        p->nNodesBeg, p->nNodesEnd, 100.0*(p->nNodesBeg-p->nNodesEnd)/(p->nNodesBeg?p->nNodesBeg:1), 
-        p->nRegsBeg, p->nRegsEnd, 100.0*(p->nRegsBeg-p->nRegsEnd)/(p->nRegsBeg?p->nRegsBeg:1) );
-    if ( p->pSat ) Sat_SolverPrintStats( stdout, p->pSat );
-    PRT( "AIG simulation  ", p->pSml->timeSim  );
-    PRT( "AIG traversal   ", p->timeTrav );
-    if ( p->timeRwr )
-    {
-    PRT( "AIG rewriting   ", p->timeRwr  );
-    }
-    PRT( "SAT solving     ", p->timeSat  );
-    PRT( "    Unsat       ", p->timeSatUnsat );
-    PRT( "    Sat         ", p->timeSatSat   );
-    PRT( "    Fail        ", p->timeSatFail  );
-    PRT( "Class refining  ", p->timeRef   );
-    PRT( "TOTAL RUNTIME   ", p->timeTotal );
-    if ( p->time1 ) { PRT( "time1           ", p->time1 ); }
-    if ( p->nSpeculs )
-    printf( "Speculations = %d.\n", p->nSpeculs );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraPart.c b/src/aig/fra/fraPart.c
deleted file mode 100644
index 691b2b3d..00000000
--- a/src/aig/fra/fraPart.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraPart.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    [Partitioning for induction.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraPart.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ManPartitionTest( Aig_Man_t * p, int nComLim )
-{
-    Bar_Progress_t * pProgress;
-    Vec_Vec_t * vSupps, * vSuppsIn;
-    Vec_Ptr_t * vSuppsNew;
-    Vec_Int_t * vSupNew, * vSup, * vSup2, * vTemp;//, * vSupIn;
-    Vec_Int_t * vOverNew, * vQuantNew;
-    Aig_Obj_t * pObj;
-    int i, k, nCommon, CountOver, CountQuant;
-    int nTotalSupp, nTotalSupp2, Entry, Largest;//, iVar;
-    double Ratio, R;
-    int clk;
-
-    nTotalSupp = 0;
-    nTotalSupp2 = 0;
-    Ratio = 0.0;
- 
-    // compute supports
-clk = clock();
-    vSupps = (Vec_Vec_t *)Aig_ManSupports( p );
-PRT( "Supports", clock() - clk );
-    // remove last entry
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        vSup = Vec_VecEntry( vSupps, i );
-        Vec_IntPop( vSup );
-        // remember support
-//        pObj->pNext = (Aig_Obj_t *)vSup;
-    }
-
-    // create reverse supports
-clk = clock();
-    vSuppsIn = Vec_VecStart( Aig_ManPiNum(p) );
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        vSup = Vec_VecEntry( vSupps, i );
-        Vec_IntForEachEntry( vSup, Entry, k )
-            Vec_VecPush( vSuppsIn, Entry, (void *)i );
-    }
-PRT( "Inverse ", clock() - clk );
-
-clk = clock();
-    // compute extended supports
-    Largest = 0;
-    vSuppsNew = Vec_PtrAlloc( Aig_ManPoNum(p) );
-    vOverNew  = Vec_IntAlloc( Aig_ManPoNum(p) );
-    vQuantNew = Vec_IntAlloc( Aig_ManPoNum(p) );
-    pProgress = Bar_ProgressStart( stdout, Aig_ManPoNum(p) );
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        Bar_ProgressUpdate( pProgress, i, NULL );
-        // get old supports
-        vSup = Vec_VecEntry( vSupps, i );
-        if ( Vec_IntSize(vSup) < 2 )
-            continue;
-        // compute new supports
-        CountOver = CountQuant = 0;
-        vSupNew = Vec_IntDup( vSup );
-        // go through the nodes where the first var appears
-        Aig_ManForEachPo( p, pObj, k )
-//        iVar = Vec_IntEntry( vSup, 0 );
-//        vSupIn = Vec_VecEntry( vSuppsIn, iVar );
-//        Vec_IntForEachEntry( vSupIn, Entry, k )
-        {
-//            pObj = Aig_ManObj( p, Entry );
-            // get support of this output
-//            vSup2 = (Vec_Int_t *)pObj->pNext;
-            vSup2 = Vec_VecEntry( vSupps, k );
-            // count the number of common vars
-            nCommon = Vec_IntTwoCountCommon(vSup, vSup2);
-            if ( nCommon < 2 )
-                continue;
-            if ( nCommon > nComLim )
-            {
-                vSupNew = Vec_IntTwoMerge( vTemp = vSupNew, vSup2 );
-                Vec_IntFree( vTemp );
-                CountOver++;
-            }
-            else
-                CountQuant++;
-        }
-        // save the results
-        Vec_PtrPush( vSuppsNew, vSupNew );
-        Vec_IntPush( vOverNew, CountOver );
-        Vec_IntPush( vQuantNew, CountQuant );
-
-        if ( Largest < Vec_IntSize(vSupNew) )
-            Largest = Vec_IntSize(vSupNew);
-
-        nTotalSupp  += Vec_IntSize(vSup);
-        nTotalSupp2 += Vec_IntSize(vSupNew);
-        if ( Vec_IntSize(vSup) )
-            R = Vec_IntSize(vSupNew) / Vec_IntSize(vSup);
-        else
-            R = 0;
-        Ratio += R;
-
-        if ( R < 5.0 )
-            continue;
-
-        printf( "%6d : ", i );
-        printf( "S = %5d. ", Vec_IntSize(vSup) );
-        printf( "SNew = %5d. ", Vec_IntSize(vSupNew) );
-        printf( "R = %7.2f. ", R );
-        printf( "Over = %5d. ", CountOver );
-        printf( "Quant = %5d. ", CountQuant );
-        printf( "\n" );
-/*
-        Vec_IntForEachEntry( vSupNew, Entry, k )
-            printf( "%d ", Entry );
-        printf( "\n" );
-*/
-    }
-    Bar_ProgressStop( pProgress );
-PRT( "Scanning", clock() - clk );
-
-    // print cumulative statistics
-    printf( "PIs = %6d. POs = %6d. Lim = %3d.   AveS = %3d. SN = %3d. R = %4.2f Max = %5d.\n",
-        Aig_ManPiNum(p), Aig_ManPoNum(p), nComLim,
-        nTotalSupp/Aig_ManPoNum(p), nTotalSupp2/Aig_ManPoNum(p),
-        Ratio/Aig_ManPoNum(p), Largest );
-
-    Vec_VecFree( vSupps );
-    Vec_VecFree( vSuppsIn );
-    Vec_VecFree( (Vec_Vec_t *)vSuppsNew );
-    Vec_IntFree( vOverNew );
-    Vec_IntFree( vQuantNew );
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_ManPartitionTest2( Aig_Man_t * p )
-{
-    Vec_Vec_t * vSupps, * vSuppsIn;
-    Vec_Int_t * vSup, * vSup2, * vSup3;
-    Aig_Obj_t * pObj;
-    int Entry, Entry2, Entry3, Counter;
-    int i, k, m, n, clk;
-    char * pSupp;
- 
-    // compute supports
-clk = clock();
-    vSupps = (Vec_Vec_t *)Aig_ManSupports( p );
-PRT( "Supports", clock() - clk );
-    // remove last entry
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        vSup = Vec_VecEntry( vSupps, i );
-        Vec_IntPop( vSup );
-        // remember support
-//        pObj->pNext = (Aig_Obj_t *)vSup;
-    }
-
-    // create reverse supports
-clk = clock();
-    vSuppsIn = Vec_VecStart( Aig_ManPiNum(p) );
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        if ( i == p->nAsserts )
-            break;
-        vSup = Vec_VecEntry( vSupps, i );
-        Vec_IntForEachEntry( vSup, Entry, k )
-            Vec_VecPush( vSuppsIn, Entry, (void *)i );
-    }
-PRT( "Inverse ", clock() - clk );
-
-    // create affective supports
-clk = clock();
-    pSupp = ALLOC( char, Aig_ManPiNum(p) );
-    Aig_ManForEachPo( p, pObj, i )
-    {
-        if ( i % 50 != 0 )
-            continue;
-        vSup = Vec_VecEntry( vSupps, i );
-        memset( pSupp, 0, sizeof(char) * Aig_ManPiNum(p) );
-        // go through each input of this output
-        Vec_IntForEachEntry( vSup, Entry, k )
-        {
-            pSupp[Entry] = 1;
-            vSup2 = Vec_VecEntry( vSuppsIn, Entry );
-            // go though each assert of this input
-            Vec_IntForEachEntry( vSup2, Entry2, m )
-            {
-                vSup3 = Vec_VecEntry( vSupps, Entry2 );
-                // go through each input of this assert
-                Vec_IntForEachEntry( vSup3, Entry3, n )
-                {
-                    pSupp[Entry3] = 1;
-                }
-            }
-        }
-        // count the entries
-        Counter = 0;
-        for ( m = 0; m < Aig_ManPiNum(p); m++ )
-            Counter += pSupp[m];
-        printf( "%d(%d) ", Vec_IntSize(vSup), Counter );
-    }
-    printf( "\n" );
-PRT( "Extension ", clock() - clk );
-
-    free( pSupp );
-    Vec_VecFree( vSupps );
-    Vec_VecFree( vSuppsIn );
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraSat.c b/src/aig/fra/fraSat.c
deleted file mode 100644
index 11029b69..00000000
--- a/src/aig/fra/fraSat.c
+++ /dev/null
@@ -1,452 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraSat.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraSat.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include <math.h>
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static int Fra_SetActivityFactors( Fra_Man_t * p, Aig_Obj_t * pOld, Aig_Obj_t * pNew );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Runs equivalence test for the two nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_NodesAreEquiv( Fra_Man_t * p, Aig_Obj_t * pOld, Aig_Obj_t * pNew )
-{
-    int pLits[4], RetValue, RetValue1, nBTLimit, clk, clk2 = clock();
-    int status;
-
-    // make sure the nodes are not complemented
-    assert( !Aig_IsComplement(pNew) );
-    assert( !Aig_IsComplement(pOld) );
-    assert( pNew != pOld );
-
-    // if at least one of the nodes is a failed node, perform adjustments:
-    // if the backtrack limit is small, simply skip this node
-    // if the backtrack limit is > 10, take the quare root of the limit
-    nBTLimit = p->pPars->nBTLimitNode;
-    if ( !p->pPars->fSpeculate && p->pPars->nFramesK == 0 && (nBTLimit > 0 && (pOld->fMarkB || pNew->fMarkB)) )
-    {
-        p->nSatFails++;
-        // fail immediately
-//        return -1;
-        if ( nBTLimit <= 10 )
-            return -1;
-        nBTLimit = (int)pow(nBTLimit, 0.7);
-    }
-
-    p->nSatCalls++;
-    p->nSatCallsRecent++;
-
-    // make sure the solver is allocated and has enough variables
-    if ( p->pSat == NULL )
-    {
-        p->pSat = sat_solver_new();
-        p->nSatVars = 1;
-        sat_solver_setnvars( p->pSat, 1000 );
-        // var 0 is reserved for const1 node - add the clause
-        pLits[0] = toLit( 0 );
-        sat_solver_addclause( p->pSat, pLits, pLits + 1 );
-    }
-
-    // if the nodes do not have SAT variables, allocate them
-    Fra_CnfNodeAddToSolver( p, pOld, pNew );
-
-    if ( p->pSat->qtail != p->pSat->qhead )
-    {
-        status = sat_solver_simplify(p->pSat);
-        assert( status != 0 );
-        assert( p->pSat->qtail == p->pSat->qhead );
-    }
-
-    // prepare variable activity
-    if ( p->pPars->fConeBias )
-        Fra_SetActivityFactors( p, pOld, pNew ); 
-
-    // solve under assumptions
-    // A = 1; B = 0     OR     A = 1; B = 1 
-clk = clock();
-    pLits[0] = toLitCond( Fra_ObjSatNum(pOld), 0 );
-    pLits[1] = toLitCond( Fra_ObjSatNum(pNew), pOld->fPhase == pNew->fPhase );
-//Sat_SolverWriteDimacs( p->pSat, "temp.cnf", pLits, pLits + 2, 1 );
-    RetValue1 = sat_solver_solve( p->pSat, pLits, pLits + 2, 
-        (sint64)nBTLimit, (sint64)0, 
-        p->nBTLimitGlobal, p->nInsLimitGlobal );
-p->timeSat += clock() - clk;
-    if ( RetValue1 == l_False )
-    {
-p->timeSatUnsat += clock() - clk;
-        pLits[0] = lit_neg( pLits[0] );
-        pLits[1] = lit_neg( pLits[1] );
-        RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 2 );
-        assert( RetValue );
-        // continue solving the other implication
-        p->nSatCallsUnsat++;
-    }
-    else if ( RetValue1 == l_True )
-    {
-p->timeSatSat += clock() - clk;
-        Fra_SmlSavePattern( p );
-        p->nSatCallsSat++;
-        return 0;
-    }
-    else // if ( RetValue1 == l_Undef )
-    {
-p->timeSatFail += clock() - clk;
-        // mark the node as the failed node
-        if ( pOld != p->pManFraig->pConst1 ) 
-            pOld->fMarkB = 1;
-        pNew->fMarkB = 1;
-        p->nSatFailsReal++;
-        return -1;
-    }
-
-    // if the old node was constant 0, we already know the answer
-    if ( pOld == p->pManFraig->pConst1 )
-    {
-        p->nSatProof++;
-        return 1;
-    }
-
-    // solve under assumptions
-    // A = 0; B = 1     OR     A = 0; B = 0 
-clk = clock();
-    pLits[0] = toLitCond( Fra_ObjSatNum(pOld), 1 );
-    pLits[1] = toLitCond( Fra_ObjSatNum(pNew), pOld->fPhase ^ pNew->fPhase );
-    RetValue1 = sat_solver_solve( p->pSat, pLits, pLits + 2, 
-        (sint64)nBTLimit, (sint64)0, 
-        p->nBTLimitGlobal, p->nInsLimitGlobal );
-p->timeSat += clock() - clk;
-    if ( RetValue1 == l_False )
-    {
-p->timeSatUnsat += clock() - clk;
-        pLits[0] = lit_neg( pLits[0] );
-        pLits[1] = lit_neg( pLits[1] );
-        RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 2 );
-        assert( RetValue );
-        p->nSatCallsUnsat++;
-    }
-    else if ( RetValue1 == l_True )
-    {
-p->timeSatSat += clock() - clk;
-        Fra_SmlSavePattern( p );
-        p->nSatCallsSat++;
-        return 0;
-    }
-    else // if ( RetValue1 == l_Undef )
-    {
-p->timeSatFail += clock() - clk;
-        // mark the node as the failed node
-        pOld->fMarkB = 1;
-        pNew->fMarkB = 1;
-        p->nSatFailsReal++;
-        return -1;
-    }
-/*
-    // check BDD proof
-    {
-        int RetVal;
-        PRT( "Sat", clock() - clk2 );
-        clk2 = clock();
-        RetVal = Fra_NodesAreEquivBdd( pOld, pNew );
-//        printf( "%d ", RetVal );
-        assert( RetVal );
-        PRT( "Bdd", clock() - clk2 );
-        printf( "\n" );
-    }
-*/
-    // return SAT proof
-    p->nSatProof++;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Runs the result of test for pObj => pNew.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_NodesAreImp( Fra_Man_t * p, Aig_Obj_t * pOld, Aig_Obj_t * pNew, int fComplL, int fComplR )
-{
-    int pLits[4], RetValue, RetValue1, nBTLimit, clk, clk2 = clock();
-    int status;
-
-    // make sure the nodes are not complemented
-    assert( !Aig_IsComplement(pNew) );
-    assert( !Aig_IsComplement(pOld) );
-    assert( pNew != pOld );
-
-    // if at least one of the nodes is a failed node, perform adjustments:
-    // if the backtrack limit is small, simply skip this node
-    // if the backtrack limit is > 10, take the quare root of the limit
-    nBTLimit = p->pPars->nBTLimitNode;
-/*
-    if ( !p->pPars->fSpeculate && p->pPars->nFramesK == 0 && (nBTLimit > 0 && (pOld->fMarkB || pNew->fMarkB)) )
-    {
-        p->nSatFails++;
-        // fail immediately
-//        return -1;
-        if ( nBTLimit <= 10 )
-            return -1;
-        nBTLimit = (int)pow(nBTLimit, 0.7);
-    }
-*/
-    p->nSatCalls++;
-
-    // make sure the solver is allocated and has enough variables
-    if ( p->pSat == NULL )
-    {
-        p->pSat = sat_solver_new();
-        p->nSatVars = 1;
-        sat_solver_setnvars( p->pSat, 1000 );
-        // var 0 is reserved for const1 node - add the clause
-        pLits[0] = toLit( 0 );
-        sat_solver_addclause( p->pSat, pLits, pLits + 1 );
-    }
-
-    // if the nodes do not have SAT variables, allocate them
-    Fra_CnfNodeAddToSolver( p, pOld, pNew );
-
-    if ( p->pSat->qtail != p->pSat->qhead )
-    {
-        status = sat_solver_simplify(p->pSat);
-        assert( status != 0 );
-        assert( p->pSat->qtail == p->pSat->qhead );
-    }
-
-    // prepare variable activity
-    if ( p->pPars->fConeBias )
-        Fra_SetActivityFactors( p, pOld, pNew ); 
-
-    // solve under assumptions
-    // A = 1; B = 0     OR     A = 1; B = 1 
-clk = clock();
-//    pLits[0] = toLitCond( Fra_ObjSatNum(pOld), 0 );
-//    pLits[1] = toLitCond( Fra_ObjSatNum(pNew), pOld->fPhase == pNew->fPhase );
-    pLits[0] = toLitCond( Fra_ObjSatNum(pOld),  fComplL );
-    pLits[1] = toLitCond( Fra_ObjSatNum(pNew), !fComplR );
-//Sat_SolverWriteDimacs( p->pSat, "temp.cnf", pLits, pLits + 2, 1 );
-    RetValue1 = sat_solver_solve( p->pSat, pLits, pLits + 2, 
-        (sint64)nBTLimit, (sint64)0, 
-        p->nBTLimitGlobal, p->nInsLimitGlobal );
-p->timeSat += clock() - clk;
-    if ( RetValue1 == l_False )
-    {
-p->timeSatUnsat += clock() - clk;
-        pLits[0] = lit_neg( pLits[0] );
-        pLits[1] = lit_neg( pLits[1] );
-        RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 2 );
-        assert( RetValue );
-        // continue solving the other implication
-        p->nSatCallsUnsat++;
-    }
-    else if ( RetValue1 == l_True )
-    {
-p->timeSatSat += clock() - clk;
-        Fra_SmlSavePattern( p );
-        p->nSatCallsSat++;
-        return 0;
-    }
-    else // if ( RetValue1 == l_Undef )
-    {
-p->timeSatFail += clock() - clk;
-        // mark the node as the failed node
-        if ( pOld != p->pManFraig->pConst1 ) 
-            pOld->fMarkB = 1;
-        pNew->fMarkB = 1;
-        p->nSatFailsReal++;
-        return -1;
-    }
-    // return SAT proof
-    p->nSatProof++;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Runs equivalence test for one node.]
-
-  Description [Returns the fraiged node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_NodeIsConst( Fra_Man_t * p, Aig_Obj_t * pNew )
-{
-    int pLits[2], RetValue1, RetValue, clk;
-
-    // make sure the nodes are not complemented
-    assert( !Aig_IsComplement(pNew) );
-    assert( pNew != p->pManFraig->pConst1 );
-    p->nSatCalls++;
-
-    // make sure the solver is allocated and has enough variables
-    if ( p->pSat == NULL )
-    {
-        p->pSat = sat_solver_new();
-        p->nSatVars = 1;
-        sat_solver_setnvars( p->pSat, 1000 );
-        // var 0 is reserved for const1 node - add the clause
-        pLits[0] = toLit( 0 );
-        sat_solver_addclause( p->pSat, pLits, pLits + 1 );
-    }
-
-    // if the nodes do not have SAT variables, allocate them
-    Fra_CnfNodeAddToSolver( p, NULL, pNew );
-
-    // prepare variable activity
-    if ( p->pPars->fConeBias )
-        Fra_SetActivityFactors( p, NULL, pNew ); 
-
-    // solve under assumptions
-clk = clock();
-    pLits[0] = toLitCond( Fra_ObjSatNum(pNew), pNew->fPhase );
-    RetValue1 = sat_solver_solve( p->pSat, pLits, pLits + 1, 
-        (sint64)p->pPars->nBTLimitMiter, (sint64)0, 
-        p->nBTLimitGlobal, p->nInsLimitGlobal );
-p->timeSat += clock() - clk;
-    if ( RetValue1 == l_False )
-    {
-p->timeSatUnsat += clock() - clk;
-        pLits[0] = lit_neg( pLits[0] );
-        RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 1 );
-        assert( RetValue );
-        // continue solving the other implication
-        p->nSatCallsUnsat++;
-    }
-    else if ( RetValue1 == l_True )
-    {
-p->timeSatSat += clock() - clk;
-        if ( p->pPatWords )
-            Fra_SmlSavePattern( p );
-        p->nSatCallsSat++;
-        return 0;
-    }
-    else // if ( RetValue1 == l_Undef )
-    {
-p->timeSatFail += clock() - clk;
-        // mark the node as the failed node
-        pNew->fMarkB = 1;
-        p->nSatFailsReal++;
-        return -1;
-    }
-
-    // return SAT proof
-    p->nSatProof++;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets variable activities in the cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_SetActivityFactors_rec( Fra_Man_t * p, Aig_Obj_t * pObj, int LevelMin, int LevelMax )
-{
-    Vec_Ptr_t * vFanins;
-    Aig_Obj_t * pFanin;
-    int i, Counter = 0;
-    assert( !Aig_IsComplement(pObj) );
-    assert( Fra_ObjSatNum(pObj) );
-    // skip visited variables
-    if ( Aig_ObjIsTravIdCurrent(p->pManFraig, pObj) )
-        return 0;
-    Aig_ObjSetTravIdCurrent(p->pManFraig, pObj);
-    // add the PI to the list
-    if ( pObj->Level <= (unsigned)LevelMin || Aig_ObjIsPi(pObj) )
-        return 0;
-    // set the factor of this variable
-    // (LevelMax-LevelMin) / (pObj->Level-LevelMin) = p->pPars->dActConeBumpMax / ThisBump
-    p->pSat->factors[Fra_ObjSatNum(pObj)] = p->pPars->dActConeBumpMax * (pObj->Level - LevelMin)/(LevelMax - LevelMin);
-    veci_push(&p->pSat->act_vars, Fra_ObjSatNum(pObj));
-    // explore the fanins
-    vFanins = Fra_ObjFaninVec( pObj );
-    Vec_PtrForEachEntry( vFanins, pFanin, i )
-        Counter += Fra_SetActivityFactors_rec( p, Aig_Regular(pFanin), LevelMin, LevelMax );
-    return 1 + Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets variable activities in the cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_SetActivityFactors( Fra_Man_t * p, Aig_Obj_t * pOld, Aig_Obj_t * pNew )
-{
-    int clk, LevelMin, LevelMax;
-    assert( pOld || pNew );
-clk = clock(); 
-    // reset the active variables
-    veci_resize(&p->pSat->act_vars, 0);
-    // prepare for traversal
-    Aig_ManIncrementTravId( p->pManFraig );
-    // determine the min and max level to visit
-    assert( p->pPars->dActConeRatio > 0 && p->pPars->dActConeRatio < 1 );
-    LevelMax = AIG_MAX( (pNew ? pNew->Level : 0), (pOld ? pOld->Level : 0) );
-    LevelMin = (int)(LevelMax * (1.0 - p->pPars->dActConeRatio));
-    // traverse
-    if ( pOld && !Aig_ObjIsConst1(pOld) )
-        Fra_SetActivityFactors_rec( p, pOld, LevelMin, LevelMax );
-    if ( pNew && !Aig_ObjIsConst1(pNew) )
-        Fra_SetActivityFactors_rec( p, pNew, LevelMin, LevelMax );
-//Fra_PrintActivity( p );
-p->timeTrav += clock() - clk;
-    return 1;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraSec.c b/src/aig/fra/fraSec.c
deleted file mode 100644
index f9bbfe44..00000000
--- a/src/aig/fra/fraSec.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraSec.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    [Performs SEC based on seq sweeping.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraSec.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-#include "ioa.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_FraigSec2( Aig_Man_t * p, int nFramesFix, int fVerbose, int fVeryVerbose )
-{
-    Aig_Man_t * pNew;
-    int nFrames, RetValue, nIter, clk, clkTotal = clock();
-    int fLatchCorr = 0;
-    if ( nFramesFix )
-    {
-        nFrames = nFramesFix;
-        // perform seq sweeping for one frame number
-        pNew = Fra_FraigInduction( p, 0, nFrames, 0, 0, 0, fLatchCorr, 0, fVeryVerbose, &nIter );
-    }
-    else
-    {
-        // perform seq sweeping while increasing the number of frames
-        for ( nFrames = 1; ; nFrames++ )
-        {
-clk = clock();
-            pNew = Fra_FraigInduction( p, 0, nFrames, 0, 0, 0, fLatchCorr, 0, fVeryVerbose, &nIter );
-            RetValue = Fra_FraigMiterStatus( pNew );
-            if ( fVerbose )
-            {
-                printf( "FRAMES %3d : Iters = %3d. ", nFrames, nIter );
-                if ( RetValue == 1 )
-                    printf( "UNSAT     " );
-                else
-                    printf( "UNDECIDED " );
-PRT( "Time", clock() - clk );
-            }
-            if ( RetValue != -1 )
-                break;
-            Aig_ManStop( pNew );
-        }
-    }
-
-    // get the miter status
-    RetValue = Fra_FraigMiterStatus( pNew );
-    Aig_ManStop( pNew );
-
-    // report the miter
-    if ( RetValue == 1 )
-        printf( "Networks are equivalent after seq sweeping with K=%d frames (%d iters). ", nFrames, nIter );
-    else if ( RetValue == 0 )
-        printf( "Networks are NOT EQUIVALENT. " );
-    else
-        printf( "Networks are UNDECIDED after seq sweeping with K=%d frames (%d iters). ", nFrames, nIter );
-PRT( "Time", clock() - clkTotal );
-    return RetValue;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_FraigSec( Aig_Man_t * p, int nFramesMax, int fRetimeFirst, int fVerbose, int fVeryVerbose )
-{
-    Fra_Sml_t * pSml;
-    Aig_Man_t * pNew, * pTemp;
-    int nFrames, RetValue, nIter, clk, clkTotal = clock();
-    int fLatchCorr = 0;
-
-    pNew = Aig_ManDup( p, 1 );
-    if ( fVerbose )
-    {
-        printf( "Original miter:       Latches = %5d. Nodes = %6d.\n", 
-            Aig_ManRegNum(pNew), Aig_ManNodeNum(pNew) );
-    }
-//Aig_ManDumpBlif( pNew, "after.blif" );
-
-    // perform sequential cleanup
-clk = clock();
-    if ( pNew->nRegs )
-    pNew = Aig_ManReduceLaches( pNew, 0 );
-    if ( pNew->nRegs )
-    pNew = Aig_ManConstReduce( pNew, 0 );
-    if ( fVerbose )
-    {
-        printf( "Sequential cleanup:   Latches = %5d. Nodes = %6d. ", 
-            Aig_ManRegNum(pNew), Aig_ManNodeNum(pNew) );
-PRT( "Time", clock() - clk );
-    }
-
-    // perform forward retiming
-    if ( fRetimeFirst && pNew->nRegs )
-    {
-clk = clock();
-    pNew = Rtm_ManRetime( pTemp = pNew, 1, 1000, 0 );
-    Aig_ManStop( pTemp );
-    if ( fVerbose )
-    {
-        printf( "Forward retiming:     Latches = %5d. Nodes = %6d. ", 
-            Aig_ManRegNum(pNew), Aig_ManNodeNum(pNew) );
-PRT( "Time", clock() - clk );
-    }
-    }
-    
-    // run latch correspondence
-clk = clock();
-    if ( pNew->nRegs )
-    {
-    pNew = Aig_ManDup( pTemp = pNew, 1 );
-    Aig_ManStop( pTemp );
-    pNew = Fra_FraigLatchCorrespondence( pTemp = pNew, 0, 100000, 1, fVeryVerbose, &nIter );
-    Aig_ManStop( pTemp );
-    if ( pNew == NULL )
-    {
-        RetValue = 0;
-        printf( "Networks are NOT EQUIVALENT after simulation.   " );
-PRT( "Time", clock() - clkTotal );
-        return RetValue;
-    }
-
-    if ( fVerbose )
-    {
-        printf( "Latch-corr (I=%3d):   Latches = %5d. Nodes = %6d. ", 
-            nIter, Aig_ManRegNum(pNew), Aig_ManNodeNum(pNew) );
-PRT( "Time", clock() - clk );
-    }
-    }
-
-    // perform fraiging
-clk = clock();
-    pNew = Fra_FraigEquivence( pTemp = pNew, 100 );
-    Aig_ManStop( pTemp );
-    if ( fVerbose )
-    {
-        printf( "Fraiging:             Latches = %5d. Nodes = %6d. ", 
-            Aig_ManRegNum(pNew), Aig_ManNodeNum(pNew) );
-PRT( "Time", clock() - clk );
-    }
-
-    // perform seq sweeping while increasing the number of frames
-    RetValue = Fra_FraigMiterStatus( pNew );
-    if ( RetValue == -1 )
-    for ( nFrames = 1; nFrames <= nFramesMax; nFrames *= 2 )
-    {
-clk = clock();
-        pNew = Fra_FraigInduction( pTemp = pNew, 0, nFrames, 0, 0, 0, fLatchCorr, 0, fVeryVerbose, &nIter );
-        Aig_ManStop( pTemp );
-        RetValue = Fra_FraigMiterStatus( pNew );
-        if ( fVerbose )
-        { 
-            printf( "K-step (K=%2d,I=%3d):  Latches = %5d. Nodes = %6d. ", 
-                nFrames, nIter, Aig_ManRegNum(pNew), Aig_ManNodeNum(pNew) );
-PRT( "Time", clock() - clk );
-        }
-        if ( RetValue != -1 )
-            break;
-        // perform rewriting
-clk = clock();
-        pNew = Aig_ManDup( pTemp = pNew, 1 );
-        Aig_ManStop( pTemp );
-        pNew = Dar_ManRewriteDefault( pNew );
-        if ( fVerbose )
-        {
-            printf( "Rewriting:            Latches = %5d. Nodes = %6d. ", 
-                Aig_ManRegNum(pNew), Aig_ManNodeNum(pNew) );
-PRT( "Time", clock() - clk );
-        } 
-
-        // perform retiming
-clk = clock();
-        pNew = Rtm_ManRetime( pTemp = pNew, 1, 1000, 0 );
-        Aig_ManStop( pTemp );
-        pNew = Aig_ManDup( pTemp = pNew, 1 );
-        Aig_ManStop( pTemp );
-        if ( fVerbose )
-        {
-            printf( "Forward retiming:     Latches = %5d. Nodes = %6d. ", 
-                Aig_ManRegNum(pNew), Aig_ManNodeNum(pNew) );
-PRT( "Time", clock() - clk );
-        }
-
-        if ( pNew->nRegs )
-        pNew = Aig_ManConstReduce( pNew, 0 );
-
-        // perform sequential simulation
-clk = clock();
-        pSml = Fra_SmlSimulateSeq( pNew, 0, 128 * nFrames, 1 + 16/(1+Aig_ManNodeNum(pNew)/1000) ); 
-        if ( fVerbose )
-        {
-            printf( "Seq simulation  :     Latches = %5d. Nodes = %6d. ", 
-                Aig_ManRegNum(pNew), Aig_ManNodeNum(pNew) );
-PRT( "Time", clock() - clk );
-        }
-        if ( pSml->fNonConstOut )
-        {
-            Fra_SmlStop( pSml );
-            Aig_ManStop( pNew );
-            RetValue = 0;
-            printf( "Networks are NOT EQUIVALENT after simulation.   " );
-PRT( "Time", clock() - clkTotal );
-            return RetValue;
-        }
-        Fra_SmlStop( pSml );
-    }
-
-    // get the miter status
-    RetValue = Fra_FraigMiterStatus( pNew );
-
-    // report the miter
-    if ( RetValue == 1 )
-    {
-        printf( "Networks are equivalent.   " );
-PRT( "Time", clock() - clkTotal );
-    }
-    else if ( RetValue == 0 )
-    {
-        printf( "Networks are NOT EQUIVALENT.   " );
-PRT( "Time", clock() - clkTotal );
-    }
-    else
-    {
-        static int Counter = 1;
-        char pFileName[1000];
-        printf( "Networks are UNDECIDED.   " );
-PRT( "Time", clock() - clkTotal );
-        sprintf( pFileName, "sm%03d.aig", Counter++ );
-        Ioa_WriteAiger( pNew, pFileName, 0 );
-        printf( "The unsolved reduced miter is written into file \"%s\".\n", pFileName );
-    }
-    Aig_ManStop( pNew );
-    return RetValue;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fraSim.c b/src/aig/fra/fraSim.c
deleted file mode 100644
index b77c775a..00000000
--- a/src/aig/fra/fraSim.c
+++ /dev/null
@@ -1,823 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fraSim.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fraSim.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Computes hash value of the node using its simulation info.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_SmlNodeHash( Aig_Obj_t * pObj, int nTableSize )
-{
-    Fra_Man_t * p = pObj->pData;
-    static int s_FPrimes[128] = { 
-        1009, 1049, 1093, 1151, 1201, 1249, 1297, 1361, 1427, 1459, 
-        1499, 1559, 1607, 1657, 1709, 1759, 1823, 1877, 1933, 1997, 
-        2039, 2089, 2141, 2213, 2269, 2311, 2371, 2411, 2467, 2543, 
-        2609, 2663, 2699, 2741, 2797, 2851, 2909, 2969, 3037, 3089, 
-        3169, 3221, 3299, 3331, 3389, 3461, 3517, 3557, 3613, 3671, 
-        3719, 3779, 3847, 3907, 3943, 4013, 4073, 4129, 4201, 4243, 
-        4289, 4363, 4441, 4493, 4549, 4621, 4663, 4729, 4793, 4871, 
-        4933, 4973, 5021, 5087, 5153, 5227, 5281, 5351, 5417, 5471, 
-        5519, 5573, 5651, 5693, 5749, 5821, 5861, 5923, 6011, 6073, 
-        6131, 6199, 6257, 6301, 6353, 6397, 6481, 6563, 6619, 6689, 
-        6737, 6803, 6863, 6917, 6977, 7027, 7109, 7187, 7237, 7309, 
-        7393, 7477, 7523, 7561, 7607, 7681, 7727, 7817, 7877, 7933, 
-        8011, 8039, 8059, 8081, 8093, 8111, 8123, 8147
-    };
-    unsigned * pSims;
-    unsigned uHash;
-    int i;
-//    assert( p->pSml->nWordsTotal <= 128 );
-    uHash = 0;
-    pSims = Fra_ObjSim(p->pSml, pObj->Id);
-    for ( i = p->pSml->nWordsPref; i < p->pSml->nWordsTotal; i++ )
-        uHash ^= pSims[i] * s_FPrimes[i & 0x7F];
-    return uHash % nTableSize;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if simulation info is composed of all zeros.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_SmlNodeIsConst( Aig_Obj_t * pObj )
-{
-    Fra_Man_t * p = pObj->pData;
-    unsigned * pSims;
-    int i;
-    pSims = Fra_ObjSim(p->pSml, pObj->Id);
-    for ( i = p->pSml->nWordsPref; i < p->pSml->nWordsTotal; i++ )
-        if ( pSims[i] )
-            return 0;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if simulation infos are equal.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_SmlNodesAreEqual( Aig_Obj_t * pObj0, Aig_Obj_t * pObj1 )
-{
-    Fra_Man_t * p = pObj0->pData;
-    unsigned * pSims0, * pSims1;
-    int i;
-    pSims0 = Fra_ObjSim(p->pSml, pObj0->Id);
-    pSims1 = Fra_ObjSim(p->pSml, pObj1->Id);
-    for ( i = p->pSml->nWordsPref; i < p->pSml->nWordsTotal; i++ )
-        if ( pSims0[i] != pSims1[i] )
-            return 0;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of 1s in the XOR of simulation data.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_SmlNodeNotEquWeight( Fra_Sml_t * p, int Left, int Right )
-{
-    unsigned * pSimL, * pSimR;
-    int k, Counter = 0;
-    pSimL = Fra_ObjSim( p, Left );
-    pSimR = Fra_ObjSim( p, Right );
-    for ( k = p->nWordsPref; k < p->nWordsTotal; k++ )
-        Counter += Aig_WordCountOnes( pSimL[k] ^ pSimR[k] );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if simulation info is composed of all zeros.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_SmlNodeIsZero( Fra_Sml_t * p, Aig_Obj_t * pObj )
-{
-    unsigned * pSims;
-    int i;
-    pSims = Fra_ObjSim(p, pObj->Id);
-    for ( i = p->nWordsPref; i < p->nWordsTotal; i++ )
-        if ( pSims[i] )
-            return 0;
-    return 1;
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Generated const 0 pattern.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlSavePattern0( Fra_Man_t * p, int fInit )
-{
-    memset( p->pPatWords, 0, sizeof(unsigned) * p->nPatWords );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [[Generated const 1 pattern.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlSavePattern1( Fra_Man_t * p, int fInit )
-{
-    Aig_Obj_t * pObj;
-    int i, k, nTruePis;
-    memset( p->pPatWords, 0xff, sizeof(unsigned) * p->nPatWords );
-    if ( !fInit )
-        return;
-    // clear the state bits to correspond to all-0 initial state
-    nTruePis = Aig_ManPiNum(p->pManAig) - Aig_ManRegNum(p->pManAig);
-    k = 0;
-    Aig_ManForEachLoSeq( p->pManAig, pObj, i )
-        Aig_InfoXorBit( p->pPatWords, nTruePis * p->nFramesAll + k++ );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Copy pattern from the solver into the internal storage.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlSavePattern( Fra_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    memset( p->pPatWords, 0, sizeof(unsigned) * p->nPatWords );
-    Aig_ManForEachPi( p->pManFraig, pObj, i )
-        if ( p->pSat->model.ptr[Fra_ObjSatNum(pObj)] == l_True )
-            Aig_InfoSetBit( p->pPatWords, i );
-
-    if ( p->vCex )
-    {
-        Vec_IntClear( p->vCex );
-        for ( i = 0; i < Aig_ManPiNum(p->pManAig) - Aig_ManRegNum(p->pManAig); i++ )
-            Vec_IntPush( p->vCex, Aig_InfoHasBit( p->pPatWords, i ) );
-        for ( i = Aig_ManPiNum(p->pManFraig) - Aig_ManRegNum(p->pManFraig); i < Aig_ManPiNum(p->pManFraig); i++ )
-            Vec_IntPush( p->vCex, Aig_InfoHasBit( p->pPatWords, i ) );
-    }
-
-/*
-    printf( "Pattern: " );
-    Aig_ManForEachPi( p->pManFraig, pObj, i )
-        printf( "%d", Aig_InfoHasBit( p->pPatWords, i ) );
-    printf( "\n" );
-*/
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the counter-example from the successful pattern.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlCheckOutputSavePattern( Fra_Man_t * p, Aig_Obj_t * pObj )
-{ 
-    unsigned * pSims;
-    int i, k, BestPat, * pModel;
-    // find the word of the pattern
-    pSims = Fra_ObjSim(p->pSml, pObj->Id);
-    for ( i = 0; i < p->pSml->nWordsTotal; i++ )
-        if ( pSims[i] )
-            break;
-    assert( i < p->pSml->nWordsTotal );
-    // find the bit of the pattern
-    for ( k = 0; k < 32; k++ )
-        if ( pSims[i] & (1 << k) )
-            break;
-    assert( k < 32 );
-    // determine the best pattern
-    BestPat = i * 32 + k;
-    // fill in the counter-example data
-    pModel = ALLOC( int, Aig_ManPiNum(p->pManFraig) );
-    Aig_ManForEachPi( p->pManAig, pObj, i )
-    {
-        pModel[i] = Aig_InfoHasBit(Fra_ObjSim(p->pSml, pObj->Id), BestPat);
-//        printf( "%d", pModel[i] );
-    }
-//    printf( "\n" );
-    // set the model
-    assert( p->pManFraig->pData == NULL );
-    p->pManFraig->pData = pModel;
-    return;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the one of the output is already non-constant 0.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_SmlCheckOutput( Fra_Man_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    // make sure the reference simulation pattern does not detect the bug
-    pObj = Aig_ManPo( p->pManAig, 0 );
-    assert( Aig_ObjFanin0(pObj)->fPhase == (unsigned)Aig_ObjFaninC0(pObj) ); 
-    Aig_ManForEachPo( p->pManAig, pObj, i )
-    {
-        if ( !Fra_SmlNodeIsConst( Aig_ObjFanin0(pObj) ) )
-        {
-            // create the counter-example from this pattern
-            Fra_SmlCheckOutputSavePattern( p, Aig_ObjFanin0(pObj) );
-            return 1;
-        }
-    }
-    return 0;
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Assigns random patterns to the PI node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlAssignRandom( Fra_Sml_t * p, Aig_Obj_t * pObj )
-{
-    unsigned * pSims;
-    int i;
-    assert( Aig_ObjIsPi(pObj) );
-    pSims = Fra_ObjSim( p, pObj->Id );
-    for ( i = 0; i < p->nWordsTotal; i++ )
-        pSims[i] = Fra_ObjRandomSim();
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Assigns constant patterns to the PI node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlAssignConst( Fra_Sml_t * p, Aig_Obj_t * pObj, int fConst1, int iFrame )
-{
-    unsigned * pSims;
-    int i;
-    assert( Aig_ObjIsPi(pObj) );
-    pSims = Fra_ObjSim( p, pObj->Id ) + p->nWordsFrame * iFrame;
-    for ( i = 0; i < p->nWordsFrame; i++ )
-        pSims[i] = fConst1? ~(unsigned)0 : 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Assings random simulation info for the PIs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlInitialize( Fra_Sml_t * p, int fInit )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    if ( fInit )
-    {
-        assert( Aig_ManRegNum(p->pAig) > 0 );
-        assert( Aig_ManRegNum(p->pAig) < Aig_ManPiNum(p->pAig) );
-        // assign random info for primary inputs
-        Aig_ManForEachPiSeq( p->pAig, pObj, i )
-            Fra_SmlAssignRandom( p, pObj );
-        // assign the initial state for the latches
-        Aig_ManForEachLoSeq( p->pAig, pObj, i )
-            Fra_SmlAssignConst( p, pObj, 0, 0 );
-    }
-    else
-    {
-        Aig_ManForEachPi( p->pAig, pObj, i )
-            Fra_SmlAssignRandom( p, pObj );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Assings distance-1 simulation info for the PIs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlAssignDist1( Fra_Sml_t * p, unsigned * pPat )
-{
-    Aig_Obj_t * pObj;
-    int f, i, k, Limit, nTruePis;
-    assert( p->nFrames > 0 );
-    if ( p->nFrames == 1 )
-    {
-        // copy the PI info 
-        Aig_ManForEachPi( p->pAig, pObj, i )
-            Fra_SmlAssignConst( p, pObj, Aig_InfoHasBit(pPat, i), 0 );
-        // flip one bit
-        Limit = AIG_MIN( Aig_ManPiNum(p->pAig), p->nWordsTotal * 32 - 1 );
-        for ( i = 0; i < Limit; i++ )
-            Aig_InfoXorBit( Fra_ObjSim( p, Aig_ManPi(p->pAig,i)->Id ), i+1 );
-    }
-    else
-    {
-        int fUseDist1 = 0;
-
-        // copy the PI info for each frame
-        nTruePis = Aig_ManPiNum(p->pAig) - Aig_ManRegNum(p->pAig);
-        for ( f = 0; f < p->nFrames; f++ )
-            Aig_ManForEachPiSeq( p->pAig, pObj, i )
-                Fra_SmlAssignConst( p, pObj, Aig_InfoHasBit(pPat, nTruePis * f + i), f );
-        // copy the latch info 
-        k = 0;
-        Aig_ManForEachLoSeq( p->pAig, pObj, i )
-            Fra_SmlAssignConst( p, pObj, Aig_InfoHasBit(pPat, nTruePis * p->nFrames + k++), 0 );
-//        assert( p->pManFraig == NULL || nTruePis * p->nFrames + k == Aig_ManPiNum(p->pManFraig) );
-
-        // flip one bit of the last frame
-        if ( fUseDist1 ) //&& p->nFrames == 2 )
-        {
-            Limit = AIG_MIN( nTruePis, p->nWordsFrame * 32 - 1 );
-            for ( i = 0; i < Limit; i++ )
-                Aig_InfoXorBit( Fra_ObjSim( p, Aig_ManPi(p->pAig, i)->Id ) + p->nWordsFrame*(p->nFrames-1), i+1 );
-        }
-    }
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Simulates one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlNodeSimulate( Fra_Sml_t * p, Aig_Obj_t * pObj, int iFrame )
-{
-    unsigned * pSims, * pSims0, * pSims1;
-    int fCompl, fCompl0, fCompl1, i;
-    assert( !Aig_IsComplement(pObj) );
-    assert( Aig_ObjIsNode(pObj) );
-    assert( iFrame == 0 || p->nWordsFrame < p->nWordsTotal );
-    // get hold of the simulation information
-    pSims  = Fra_ObjSim(p, pObj->Id) + p->nWordsFrame * iFrame;
-    pSims0 = Fra_ObjSim(p, Aig_ObjFanin0(pObj)->Id) + p->nWordsFrame * iFrame;
-    pSims1 = Fra_ObjSim(p, Aig_ObjFanin1(pObj)->Id) + p->nWordsFrame * iFrame;
-    // get complemented attributes of the children using their random info
-    fCompl  = pObj->fPhase;
-    fCompl0 = Aig_ObjPhaseReal(Aig_ObjChild0(pObj));
-    fCompl1 = Aig_ObjPhaseReal(Aig_ObjChild1(pObj));
-    // simulate
-    if ( fCompl0 && fCompl1 )
-    {
-        if ( fCompl )
-            for ( i = 0; i < p->nWordsFrame; i++ )
-                pSims[i] = (pSims0[i] | pSims1[i]);
-        else
-            for ( i = 0; i < p->nWordsFrame; i++ )
-                pSims[i] = ~(pSims0[i] | pSims1[i]);
-    }
-    else if ( fCompl0 && !fCompl1 )
-    {
-        if ( fCompl )
-            for ( i = 0; i < p->nWordsFrame; i++ )
-                pSims[i] = (pSims0[i] | ~pSims1[i]);
-        else
-            for ( i = 0; i < p->nWordsFrame; i++ )
-                pSims[i] = (~pSims0[i] & pSims1[i]);
-    }
-    else if ( !fCompl0 && fCompl1 )
-    {
-        if ( fCompl )
-            for ( i = 0; i < p->nWordsFrame; i++ )
-                pSims[i] = (~pSims0[i] | pSims1[i]);
-        else
-            for ( i = 0; i < p->nWordsFrame; i++ )
-                pSims[i] = (pSims0[i] & ~pSims1[i]);
-    }
-    else // if ( !fCompl0 && !fCompl1 )
-    {
-        if ( fCompl )
-            for ( i = 0; i < p->nWordsFrame; i++ )
-                pSims[i] = ~(pSims0[i] & pSims1[i]);
-        else
-            for ( i = 0; i < p->nWordsFrame; i++ )
-                pSims[i] = (pSims0[i] & pSims1[i]);
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Simulates one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlNodeCopyFanin( Fra_Sml_t * p, Aig_Obj_t * pObj, int iFrame )
-{
-    unsigned * pSims, * pSims0;
-    int fCompl, fCompl0, i;
-    assert( !Aig_IsComplement(pObj) );
-    assert( Aig_ObjIsPo(pObj) );
-    assert( iFrame == 0 || p->nWordsFrame < p->nWordsTotal );
-    // get hold of the simulation information
-    pSims  = Fra_ObjSim(p, pObj->Id) + p->nWordsFrame * iFrame;
-    pSims0 = Fra_ObjSim(p, Aig_ObjFanin0(pObj)->Id) + p->nWordsFrame * iFrame;
-    // get complemented attributes of the children using their random info
-    fCompl  = pObj->fPhase;
-    fCompl0 = Aig_ObjPhaseReal(Aig_ObjChild0(pObj));
-    // copy information as it is
-    if ( fCompl0 )
-        for ( i = 0; i < p->nWordsFrame; i++ )
-            pSims[i] = ~pSims0[i];
-    else
-        for ( i = 0; i < p->nWordsFrame; i++ )
-            pSims[i] = pSims0[i];
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Simulates one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlNodeTransferNext( Fra_Sml_t * p, Aig_Obj_t * pOut, Aig_Obj_t * pIn, int iFrame )
-{
-    unsigned * pSims0, * pSims1;
-    int i;
-    assert( !Aig_IsComplement(pOut) );
-    assert( !Aig_IsComplement(pIn) );
-    assert( Aig_ObjIsPo(pOut) );
-    assert( Aig_ObjIsPi(pIn) );
-    assert( iFrame == 0 || p->nWordsFrame < p->nWordsTotal );
-    // get hold of the simulation information
-    pSims0 = Fra_ObjSim(p, pOut->Id) + p->nWordsFrame * iFrame;
-    pSims1 = Fra_ObjSim(p, pIn->Id) + p->nWordsFrame * (iFrame+1);
-    // copy information as it is
-    for ( i = 0; i < p->nWordsFrame; i++ )
-        pSims1[i] = pSims0[i];
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Check if any of the POs becomes non-constant.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Fra_SmlCheckNonConstOutputs( Fra_Sml_t * p )
-{
-    Aig_Obj_t * pObj;
-    int i;
-    Aig_ManForEachPoSeq( p->pAig, pObj, i )
-        if ( !Fra_SmlNodeIsZero(p, pObj) )
-            return 1;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Simulates AIG manager.]
-
-  Description [Assumes that the PI simulation info is attached.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlSimulateOne( Fra_Sml_t * p )
-{
-    Aig_Obj_t * pObj, * pObjLi, * pObjLo;
-    int f, i, clk;
-clk = clock();
-    for ( f = 0; f < p->nFrames; f++ )
-    {
-        // simulate the nodes
-        Aig_ManForEachNode( p->pAig, pObj, i )
-            Fra_SmlNodeSimulate( p, pObj, f );
-        // copy simulation info into outputs
-        Aig_ManForEachPoSeq( p->pAig, pObj, i )
-            Fra_SmlNodeCopyFanin( p, pObj, f );
-        // quit if this is the last timeframe
-        if ( f == p->nFrames - 1 )
-            break;
-        // copy simulation info into outputs
-        Aig_ManForEachLiSeq( p->pAig, pObj, i )
-            Fra_SmlNodeCopyFanin( p, pObj, f );
-        // copy simulation info into the inputs
-        Aig_ManForEachLiLoSeq( p->pAig, pObjLi, pObjLo, i )
-            Fra_SmlNodeTransferNext( p, pObjLi, pObjLo, f );
-    }
-p->timeSim += clock() - clk;
-p->nSimRounds++;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Resimulates fraiging manager after finding a counter-example.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlResimulate( Fra_Man_t * p )
-{
-    int nChanges, clk;
-    Fra_SmlAssignDist1( p->pSml, p->pPatWords );
-    Fra_SmlSimulateOne( p->pSml );
-//    if ( p->pPars->fPatScores )
-//        Fra_CleanPatScores( p );
-    if ( p->pPars->fProve && Fra_SmlCheckOutput(p) )
-        return;
-clk = clock();
-    nChanges = Fra_ClassesRefine( p->pCla );
-    nChanges += Fra_ClassesRefine1( p->pCla, 1, NULL );
-    if ( p->pCla->vImps )
-        nChanges += Fra_ImpRefineUsingCex( p, p->pCla->vImps );
-p->timeRef += clock() - clk;
-    if ( !p->pPars->nFramesK && nChanges < 1 )
-        printf( "Error: A counter-example did not refine classes!\n" );
-//    assert( nChanges >= 1 );
-//printf( "Refined classes = %5d.   Changes = %4d.\n", Vec_PtrSize(p->vClasses), nChanges );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs simulation of the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlSimulate( Fra_Man_t * p, int fInit )
-{
-    int fVerbose = 0;
-    int nChanges, nClasses, clk;
-    assert( !fInit || Aig_ManRegNum(p->pManAig) );
-    // start the classes
-    Fra_SmlInitialize( p->pSml, fInit );
-    Fra_SmlSimulateOne( p->pSml );
-    Fra_ClassesPrepare( p->pCla, p->pPars->fLatchCorr );
-//    Fra_ClassesPrint( p->pCla, 0 );
-if ( fVerbose )
-printf( "Starting classes = %5d.   Lits = %6d.\n", Vec_PtrSize(p->pCla->vClasses), Fra_ClassesCountLits(p->pCla) );
-
-//return;
-
-    // refine classes by walking 0/1 patterns
-    Fra_SmlSavePattern0( p, fInit );
-    Fra_SmlAssignDist1( p->pSml, p->pPatWords );
-    Fra_SmlSimulateOne( p->pSml );
-    if ( p->pPars->fProve && Fra_SmlCheckOutput(p) )
-        return;
-clk = clock();
-    nChanges = Fra_ClassesRefine( p->pCla );
-    nChanges += Fra_ClassesRefine1( p->pCla, 1, NULL );
-p->timeRef += clock() - clk;
-if ( fVerbose )
-printf( "Refined classes  = %5d.   Changes = %4d.   Lits = %6d.\n", Vec_PtrSize(p->pCla->vClasses), nChanges, Fra_ClassesCountLits(p->pCla) );
-    Fra_SmlSavePattern1( p, fInit );
-    Fra_SmlAssignDist1( p->pSml, p->pPatWords );
-    Fra_SmlSimulateOne( p->pSml );
-    if ( p->pPars->fProve && Fra_SmlCheckOutput(p) )
-        return;
-clk = clock();
-    nChanges = Fra_ClassesRefine( p->pCla );
-    nChanges += Fra_ClassesRefine1( p->pCla, 1, NULL );
-p->timeRef += clock() - clk;
-
-if ( fVerbose )
-printf( "Refined classes  = %5d.   Changes = %4d.   Lits = %6d.\n", Vec_PtrSize(p->pCla->vClasses), nChanges, Fra_ClassesCountLits(p->pCla) );
-    // refine classes by random simulation
-    do {
-        Fra_SmlInitialize( p->pSml, fInit );
-        Fra_SmlSimulateOne( p->pSml );
-        nClasses = Vec_PtrSize(p->pCla->vClasses);
-        if ( p->pPars->fProve && Fra_SmlCheckOutput(p) )
-            return;
-clk = clock();
-        nChanges = Fra_ClassesRefine( p->pCla );
-        nChanges += Fra_ClassesRefine1( p->pCla, 1, NULL );
-p->timeRef += clock() - clk;
-if ( fVerbose )
-printf( "Refined classes  = %5d.   Changes = %4d.   Lits = %6d.\n", Vec_PtrSize(p->pCla->vClasses), nChanges, Fra_ClassesCountLits(p->pCla) );
-    } while ( (double)nChanges / nClasses > p->pPars->dSimSatur );
-
-//    if ( p->pPars->fVerbose )
-//    printf( "Consts = %6d. Classes = %6d. Literals = %6d.\n", 
-//        Vec_PtrSize(p->pCla->vClasses1), Vec_PtrSize(p->pCla->vClasses), Fra_ClassesCountLits(p->pCla) );
-//    Fra_ClassesPrint( p->pCla, 0 );
-}
- 
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates simulation manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Fra_Sml_t * Fra_SmlStart( Aig_Man_t * pAig, int nPref, int nFrames, int nWordsFrame )
-{
-    Fra_Sml_t * p;
-    p = (Fra_Sml_t *)malloc( sizeof(Fra_Sml_t) + sizeof(unsigned) * Aig_ManObjNumMax(pAig) * (nPref + nFrames) * nWordsFrame );
-    memset( p, 0, sizeof(Fra_Sml_t) + sizeof(unsigned) * (nPref + nFrames) * nWordsFrame );
-    p->pAig        = pAig;
-    p->nPref       = nPref;
-    p->nFrames     = nPref + nFrames;
-    p->nWordsFrame = nWordsFrame;
-    p->nWordsTotal = (nPref + nFrames) * nWordsFrame;
-    p->nWordsPref  = nPref * nWordsFrame;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deallocates simulation manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Fra_SmlStop( Fra_Sml_t * p )
-{
-    free( p );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Performs simulation of the uninitialized circuit.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Fra_Sml_t * Fra_SmlSimulateComb( Aig_Man_t * pAig, int nWords )
-{
-    Fra_Sml_t * p;
-    p = Fra_SmlStart( pAig, 0, 1, nWords );
-    Fra_SmlInitialize( p, 0 );
-    Fra_SmlSimulateOne( p );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs simulation of the initialized circuit.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Fra_Sml_t * Fra_SmlSimulateSeq( Aig_Man_t * pAig, int nPref, int nFrames, int nWords )
-{
-    Fra_Sml_t * p;
-    p = Fra_SmlStart( pAig, nPref, nFrames, nWords );
-    Fra_SmlInitialize( p, 1 );
-    Fra_SmlSimulateOne( p );
-    p->fNonConstOut = Fra_SmlCheckNonConstOutputs( p );
-    return p;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/fra_.c b/src/aig/fra/fra_.c
deleted file mode 100644
index 2b601587..00000000
--- a/src/aig/fra/fra_.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [fra_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [New FRAIG package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 30, 2007.]
-
-  Revision    [$Id: fra_.c,v 1.00 2007/06/30 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "fra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/fra/module.make b/src/aig/fra/module.make
deleted file mode 100644
index e7264fdc..00000000
--- a/src/aig/fra/module.make
+++ /dev/null
@@ -1,12 +0,0 @@
-SRC +=    src/aig/fra/fraBmc.c \
-    src/aig/fra/fraCec.c \
-    src/aig/fra/fraClass.c \
-    src/aig/fra/fraCnf.c \
-    src/aig/fra/fraCore.c \
-    src/aig/fra/fraImp.c \
-    src/aig/fra/fraInd.c \
-    src/aig/fra/fraLcr.c \
-    src/aig/fra/fraMan.c \
-    src/aig/fra/fraSat.c \
-    src/aig/fra/fraSec.c \
-    src/aig/fra/fraSim.c
diff --git a/src/aig/hop/cudd2.c b/src/aig/hop/cudd2.c
deleted file mode 100644
index 28d13ce0..00000000
--- a/src/aig/hop/cudd2.c
+++ /dev/null
@@ -1,355 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cudd2.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [Recording AIGs for the BDD operations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - October 3, 2006.]
-
-  Revision    [$Id: cudd2.c,v 1.00 2006/10/03 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-#include "st.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Aig_CuddMan_t_        Aig_CuddMan_t;
-struct Aig_CuddMan_t_
-{
-    Aig_Man_t *  pAig;   // internal AIG package
-    st_table *   pTable; // hash table mapping BDD nodes into AIG nodes
-};
-
-// static Cudd AIG manager used in this experiment
-static Aig_CuddMan_t * s_pCuddMan = NULL;
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Start AIG recording.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_Init( unsigned int numVars, unsigned int numVarsZ, unsigned int numSlots, unsigned int cacheSize, unsigned long maxMemory, void * pCudd )
-{
-    int v;
-    // start the BDD-to-AIG manager when the first BDD manager is allocated
-    if ( s_pCuddMan != NULL )
-        return;
-    s_pCuddMan = ALLOC( Aig_CuddMan_t, 1 );
-    s_pCuddMan->pAig = Aig_ManStart();
-    s_pCuddMan->pTable = st_init_table( st_ptrcmp, st_ptrhash );
-    for ( v = 0; v < (int)numVars; v++ )
-        Aig_ObjCreatePi( s_pCuddMan->pAig );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops AIG recording.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_Quit( void * pCudd )
-{
-    assert( s_pCuddMan != NULL );
-    Aig_ManDumpBlif( s_pCuddMan->pAig, "aig_temp.blif" );
-    Aig_ManStop( s_pCuddMan->pAig );
-    st_free_table( s_pCuddMan->pTable );
-    free( s_pCuddMan );
-    s_pCuddMan = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Fetches AIG node corresponding to the BDD node from the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static Aig_Obj_t * Cudd2_GetArg( void * pArg )
-{
-    Aig_Obj_t * pNode;
-    assert( s_pCuddMan != NULL );
-    if ( !st_lookup( s_pCuddMan->pTable, (char *)Aig_Regular(pArg), (char **)&pNode ) )
-    {
-        printf( "Cudd2_GetArg(): An argument BDD is not in the hash table.\n" );
-        return NULL;
-    }
-    return Aig_NotCond( pNode, Aig_IsComplement(pArg) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts the AIG node corresponding to the BDD node into the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static void Cudd2_SetArg( Aig_Obj_t * pNode, void * pResult )
-{
-    assert( s_pCuddMan != NULL );
-    if ( st_is_member( s_pCuddMan->pTable, (char *)Aig_Regular(pResult) ) )
-        return;
-    pNode = Aig_NotCond( pNode,  Aig_IsComplement(pResult) );
-    st_insert( s_pCuddMan->pTable, (char *)Aig_Regular(pResult), (char *)pNode );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Registers constant 1 node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddOne( void * pCudd, void * pResult )
-{
-    Cudd2_SetArg( Aig_ManConst1(s_pCuddMan->pAig), pResult );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds elementary variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddIthVar( void * pCudd, int iVar, void * pResult )
-{
-    int v;
-    assert( s_pCuddMan != NULL );
-    for ( v = Aig_ManPiNum(s_pCuddMan->pAig); v <= iVar; v++ )
-        Aig_ObjCreatePi( s_pCuddMan->pAig );
-    Cudd2_SetArg( Aig_ManPi(s_pCuddMan->pAig, iVar), pResult );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs BDD operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddAnd( void * pCudd, void * pArg0, void * pArg1, void * pResult )
-{
-    Aig_Obj_t * pNode0, * pNode1, * pNode;
-    pNode0 = Cudd2_GetArg( pArg0 );
-    pNode1 = Cudd2_GetArg( pArg1 );
-    pNode  = Aig_And( s_pCuddMan->pAig, pNode0, pNode1 );
-    Cudd2_SetArg( pNode, pResult );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs BDD operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddOr( void * pCudd, void * pArg0, void * pArg1, void * pResult )
-{
-    Cudd2_bddAnd( pCudd, Aig_Not(pArg0), Aig_Not(pArg1), Aig_Not(pResult) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs BDD operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddNand( void * pCudd, void * pArg0, void * pArg1, void * pResult )
-{
-    Cudd2_bddAnd( pCudd, pArg0, pArg1, Aig_Not(pResult) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs BDD operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddNor( void * pCudd, void * pArg0, void * pArg1, void * pResult )
-{
-    Cudd2_bddAnd( pCudd, Aig_Not(pArg0), Aig_Not(pArg1), pResult );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs BDD operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddXor( void * pCudd, void * pArg0, void * pArg1, void * pResult )
-{
-    Aig_Obj_t * pNode0, * pNode1, * pNode;
-    pNode0 = Cudd2_GetArg( pArg0 );
-    pNode1 = Cudd2_GetArg( pArg1 );
-    pNode  = Aig_Exor( s_pCuddMan->pAig, pNode0, pNode1 );
-    Cudd2_SetArg( pNode, pResult );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs BDD operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddXnor( void * pCudd, void * pArg0, void * pArg1, void * pResult )
-{
-    Cudd2_bddXor( pCudd, pArg0, pArg1, Aig_Not(pResult) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs BDD operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddIte( void * pCudd, void * pArg0, void * pArg1, void * pArg2, void * pResult )
-{
-    Aig_Obj_t * pNode0, * pNode1, * pNode2, * pNode;
-    pNode0 = Cudd2_GetArg( pArg0 );
-    pNode1 = Cudd2_GetArg( pArg1 );
-    pNode2 = Cudd2_GetArg( pArg2 );
-    pNode  = Aig_Mux( s_pCuddMan->pAig, pNode0, pNode1, pNode2 );
-    Cudd2_SetArg( pNode, pResult );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs BDD operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddCompose( void * pCudd, void * pArg0, void * pArg1, int v, void * pResult )
-{
-    Aig_Obj_t * pNode0, * pNode1, * pNode;
-    pNode0 = Cudd2_GetArg( pArg0 );
-    pNode1 = Cudd2_GetArg( pArg1 );
-    pNode  = Aig_Compose( s_pCuddMan->pAig, pNode0, pNode1, v );
-    Cudd2_SetArg( pNode, pResult );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Should be called after each containment check.]
-
-  Description [Result should be 1 if Cudd2_bddLeq returned 1.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddLeq( void * pCudd, void * pArg0, void * pArg1, int Result )
-{
-    Aig_Obj_t * pNode0, * pNode1, * pNode;
-    pNode0 = Cudd2_GetArg( pArg0 );
-    pNode1 = Cudd2_GetArg( pArg1 );
-    pNode  = Aig_And( s_pCuddMan->pAig, pNode0, Aig_Not(pNode1) );
-    Aig_ObjCreatePo( s_pCuddMan->pAig, pNode );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Should be called after each equality check.]
-
-  Description [Result should be 1 if they are equal.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Cudd2_bddEqual( void * pCudd, void * pArg0, void * pArg1, int Result )
-{
-    Aig_Obj_t * pNode0, * pNode1, * pNode;
-    pNode0 = Cudd2_GetArg( pArg0 );
-    pNode1 = Cudd2_GetArg( pArg1 );
-    pNode  = Aig_Exor( s_pCuddMan->pAig, pNode0, pNode1 );
-    Aig_ObjCreatePo( s_pCuddMan->pAig, pNode );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/cudd2.h b/src/aig/hop/cudd2.h
deleted file mode 100644
index 69711c11..00000000
--- a/src/aig/hop/cudd2.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cudd2.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - October 3, 2006.]
-
-  Revision    [$Id: cudd2.h,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __CUDD2_H__
-#define __CUDD2_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-// HA: Added for printing messages
-#ifndef MSG 
-#define MSG(msg) (printf("%s = \n",(msg)));
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-
-////////////////////////////////////////////////////////////////////////
-///                             ITERATORS                            ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-extern void Cudd2_Init      ( unsigned int numVars, unsigned int numVarsZ, unsigned int numSlots, unsigned int cacheSize, unsigned long maxMemory, void * pCudd );
-extern void Cudd2_Quit      ( void * pCudd );
-extern void Cudd2_bddOne    ( void * pCudd, void * pResult );
-extern void Cudd2_bddIthVar ( void * pCudd, int iVar, void * pResult );
-extern void Cudd2_bddAnd    ( void * pCudd, void * pArg0, void * pArg1, void * pResult );
-extern void Cudd2_bddOr     ( void * pCudd, void * pArg0, void * pArg1, void * pResult );
-extern void Cudd2_bddNand   ( void * pCudd, void * pArg0, void * pArg1, void * pResult );
-extern void Cudd2_bddNor    ( void * pCudd, void * pArg0, void * pArg1, void * pResult );
-extern void Cudd2_bddXor    ( void * pCudd, void * pArg0, void * pArg1, void * pResult );
-extern void Cudd2_bddXnor   ( void * pCudd, void * pArg0, void * pArg1, void * pResult );
-extern void Cudd2_bddIte    ( void * pCudd, void * pArg0, void * pArg1, void * pArg2, void * pResult );
-extern void Cudd2_bddCompose( void * pCudd, void * pArg0, void * pArg1, int v, void * pResult );
-extern void Cudd2_bddLeq    ( void * pCudd, void * pArg0, void * pArg1, int Result );
-extern void Cudd2_bddEqual  ( void * pCudd, void * pArg0, void * pArg1, int Result );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/hop/hop.h b/src/aig/hop/hop.h
deleted file mode 100644
index e8e916cc..00000000
--- a/src/aig/hop/hop.h
+++ /dev/null
@@ -1,347 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hop.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: hop.h,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __HOP_H__
-#define __HOP_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-
-#include "vec.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Hop_Man_t_            Hop_Man_t;
-typedef struct Hop_Obj_t_            Hop_Obj_t;
-typedef int                          Hop_Edge_t;
-
-// object types
-typedef enum { 
-    AIG_NONE,                        // 0: non-existent object
-    AIG_CONST1,                      // 1: constant 1 
-    AIG_PI,                          // 2: primary input
-    AIG_PO,                          // 3: primary output
-    AIG_AND,                         // 4: AND node
-    AIG_EXOR,                        // 5: EXOR node
-    AIG_VOID                         // 6: unused object
-} Hop_Type_t;
-
-// the AIG node
-struct Hop_Obj_t_  // 6 words
-{
-    void *           pData;          // misc
-    Hop_Obj_t *      pNext;          // strashing table
-    Hop_Obj_t *      pFanin0;        // fanin
-    Hop_Obj_t *      pFanin1;        // fanin
-    unsigned int     Type    :  3;   // object type
-    unsigned int     fPhase  :  1;   // value under 000...0 pattern
-    unsigned int     fMarkA  :  1;   // multipurpose mask
-    unsigned int     fMarkB  :  1;   // multipurpose mask
-    unsigned int     nRefs   : 26;   // reference count (level)
-    int              Id;             // unique ID of the node
-};
-
-// the AIG manager
-struct Hop_Man_t_
-{
-    // AIG nodes
-    Vec_Ptr_t *      vPis;           // the array of PIs
-    Vec_Ptr_t *      vPos;           // the array of POs
-    Vec_Ptr_t *      vObjs;          // the array of all nodes (optional)
-    Hop_Obj_t *      pConst1;        // the constant 1 node
-    Hop_Obj_t        Ghost;          // the ghost node
-    // AIG node counters
-    int              nObjs[AIG_VOID];// the number of objects by type
-    int              nCreated;       // the number of created objects
-    int              nDeleted;       // the number of deleted objects
-    // stuctural hash table
-    Hop_Obj_t **     pTable;         // structural hash table
-    int              nTableSize;     // structural hash table size
-    // various data members
-    void *           pData;          // the temporary data
-    int              nTravIds;       // the current traversal ID
-    int              fRefCount;      // enables reference counting
-    int              fCatchExor;     // enables EXOR nodes
-    // memory management
-    Vec_Ptr_t *      vChunks;        // allocated memory pieces
-    Vec_Ptr_t *      vPages;         // memory pages used by nodes
-    Hop_Obj_t *      pListFree;      // the list of free nodes 
-    // timing statistics
-    int              time1;
-    int              time2;
-};
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-#define AIG_MIN(a,b)       (((a) < (b))? (a) : (b))
-#define AIG_MAX(a,b)       (((a) > (b))? (a) : (b))
-
-#ifndef PRT
-#define PRT(a,t)  printf("%s = ", (a)); printf("%6.2f sec\n", (float)(t)/(float)(CLOCKS_PER_SEC))
-#endif
-
-static inline int          Hop_BitWordNum( int nBits )            { return (nBits>>5) + ((nBits&31) > 0);           }
-static inline int          Hop_TruthWordNum( int nVars )          { return nVars <= 5 ? 1 : (1 << (nVars - 5));     }
-static inline int          Hop_InfoHasBit( unsigned * p, int i )  { return (p[(i)>>5] & (1<<((i) & 31))) > 0;       }
-static inline void         Hop_InfoSetBit( unsigned * p, int i )  { p[(i)>>5] |= (1<<((i) & 31));                   }
-static inline void         Hop_InfoXorBit( unsigned * p, int i )  { p[(i)>>5] ^= (1<<((i) & 31));                   }
-static inline int          Hop_Base2Log( unsigned n )             { int r; assert( n >= 0 ); if ( n < 2 ) return n; for ( r = 0, n--; n; n >>= 1, r++ ); return r; }
-static inline int          Hop_Base10Log( unsigned n )            { int r; assert( n >= 0 ); if ( n < 2 ) return n; for ( r = 0, n--; n; n /= 10, r++ ); return r; }
-
-static inline Hop_Obj_t *  Hop_Regular( Hop_Obj_t * p )           { return (Hop_Obj_t *)((unsigned long)(p) & ~01);      }
-static inline Hop_Obj_t *  Hop_Not( Hop_Obj_t * p )               { return (Hop_Obj_t *)((unsigned long)(p) ^  01);      }
-static inline Hop_Obj_t *  Hop_NotCond( Hop_Obj_t * p, int c )    { return (Hop_Obj_t *)((unsigned long)(p) ^ (c));      }
-static inline int          Hop_IsComplement( Hop_Obj_t * p )      { return (int )(((unsigned long)p) & 01);              }
-
-static inline Hop_Obj_t *  Hop_ManConst0( Hop_Man_t * p )         { return Hop_Not(p->pConst1);                     }
-static inline Hop_Obj_t *  Hop_ManConst1( Hop_Man_t * p )         { return p->pConst1;                              }
-static inline Hop_Obj_t *  Hop_ManGhost( Hop_Man_t * p )          { return &p->Ghost;                               }
-static inline Hop_Obj_t *  Hop_ManPi( Hop_Man_t * p, int i )      { return (Hop_Obj_t *)Vec_PtrEntry(p->vPis, i);   }
-static inline Hop_Obj_t *  Hop_ManPo( Hop_Man_t * p, int i )      { return (Hop_Obj_t *)Vec_PtrEntry(p->vPos, i);   }
-static inline Hop_Obj_t *  Hop_ManObj( Hop_Man_t * p, int i )     { return p->vObjs ? (Hop_Obj_t *)Vec_PtrEntry(p->vObjs, i) : NULL;  }
-
-static inline Hop_Edge_t   Hop_EdgeCreate( int Id, int fCompl )            { return (Id << 1) | fCompl;             }
-static inline int          Hop_EdgeId( Hop_Edge_t Edge )                   { return Edge >> 1;                      }
-static inline int          Hop_EdgeIsComplement( Hop_Edge_t Edge )         { return Edge & 1;                       }
-static inline Hop_Edge_t   Hop_EdgeRegular( Hop_Edge_t Edge )              { return (Edge >> 1) << 1;               }
-static inline Hop_Edge_t   Hop_EdgeNot( Hop_Edge_t Edge )                  { return Edge ^ 1;                       }
-static inline Hop_Edge_t   Hop_EdgeNotCond( Hop_Edge_t Edge, int fCond )   { return Edge ^ fCond;                   }
-
-static inline int          Hop_ManPiNum( Hop_Man_t * p )          { return p->nObjs[AIG_PI];                    }
-static inline int          Hop_ManPoNum( Hop_Man_t * p )          { return p->nObjs[AIG_PO];                    }
-static inline int          Hop_ManAndNum( Hop_Man_t * p )         { return p->nObjs[AIG_AND];                   }
-static inline int          Hop_ManExorNum( Hop_Man_t * p )        { return p->nObjs[AIG_EXOR];                  }
-static inline int          Hop_ManNodeNum( Hop_Man_t * p )        { return p->nObjs[AIG_AND]+p->nObjs[AIG_EXOR];}
-static inline int          Hop_ManGetCost( Hop_Man_t * p )        { return p->nObjs[AIG_AND]+3*p->nObjs[AIG_EXOR]; }
-static inline int          Hop_ManObjNum( Hop_Man_t * p )         { return p->nCreated - p->nDeleted;           }
-
-static inline Hop_Type_t   Hop_ObjType( Hop_Obj_t * pObj )        { return (Hop_Type_t)pObj->Type;               }
-static inline int          Hop_ObjIsNone( Hop_Obj_t * pObj )      { return pObj->Type == AIG_NONE;   }
-static inline int          Hop_ObjIsConst1( Hop_Obj_t * pObj )    { assert(!Hop_IsComplement(pObj)); return pObj->Type == AIG_CONST1; }
-static inline int          Hop_ObjIsPi( Hop_Obj_t * pObj )        { return pObj->Type == AIG_PI;     }
-static inline int          Hop_ObjIsPo( Hop_Obj_t * pObj )        { return pObj->Type == AIG_PO;     }
-static inline int          Hop_ObjIsAnd( Hop_Obj_t * pObj )       { return pObj->Type == AIG_AND;    }
-static inline int          Hop_ObjIsExor( Hop_Obj_t * pObj )      { return pObj->Type == AIG_EXOR;   }
-static inline int          Hop_ObjIsNode( Hop_Obj_t * pObj )      { return pObj->Type == AIG_AND || pObj->Type == AIG_EXOR;   }
-static inline int          Hop_ObjIsTerm( Hop_Obj_t * pObj )      { return pObj->Type == AIG_PI  || pObj->Type == AIG_PO || pObj->Type == AIG_CONST1; }
-static inline int          Hop_ObjIsHash( Hop_Obj_t * pObj )      { return pObj->Type == AIG_AND || pObj->Type == AIG_EXOR;   }
-
-static inline int          Hop_ObjIsMarkA( Hop_Obj_t * pObj )     { return pObj->fMarkA;  }
-static inline void         Hop_ObjSetMarkA( Hop_Obj_t * pObj )    { pObj->fMarkA = 1;     }
-static inline void         Hop_ObjClearMarkA( Hop_Obj_t * pObj )  { pObj->fMarkA = 0;     }
- 
-static inline void         Hop_ObjSetTravId( Hop_Obj_t * pObj, int TravId )                { pObj->pData = (void *)TravId;                       }
-static inline void         Hop_ObjSetTravIdCurrent( Hop_Man_t * p, Hop_Obj_t * pObj )      { pObj->pData = (void *)p->nTravIds;                  }
-static inline void         Hop_ObjSetTravIdPrevious( Hop_Man_t * p, Hop_Obj_t * pObj )     { pObj->pData = (void *)(p->nTravIds - 1);            }
-static inline int          Hop_ObjIsTravIdCurrent( Hop_Man_t * p, Hop_Obj_t * pObj )       { return (int )((int)pObj->pData == p->nTravIds);     }
-static inline int          Hop_ObjIsTravIdPrevious( Hop_Man_t * p, Hop_Obj_t * pObj )      { return (int )((int)pObj->pData == p->nTravIds - 1); }
-
-static inline int          Hop_ObjTravId( Hop_Obj_t * pObj )      { return (int)pObj->pData;                       }
-static inline int          Hop_ObjPhase( Hop_Obj_t * pObj )       { return pObj->fPhase;                           }
-static inline int          Hop_ObjRefs( Hop_Obj_t * pObj )        { return pObj->nRefs;                            }
-static inline void         Hop_ObjRef( Hop_Obj_t * pObj )         { pObj->nRefs++;                                 }
-static inline void         Hop_ObjDeref( Hop_Obj_t * pObj )       { assert( pObj->nRefs > 0 ); pObj->nRefs--;      }
-static inline void         Hop_ObjClearRef( Hop_Obj_t * pObj )    { pObj->nRefs = 0;                               }
-static inline int          Hop_ObjFaninC0( Hop_Obj_t * pObj )     { return Hop_IsComplement(pObj->pFanin0);        }
-static inline int          Hop_ObjFaninC1( Hop_Obj_t * pObj )     { return Hop_IsComplement(pObj->pFanin1);        }
-static inline Hop_Obj_t *  Hop_ObjFanin0( Hop_Obj_t * pObj )      { return Hop_Regular(pObj->pFanin0);             }
-static inline Hop_Obj_t *  Hop_ObjFanin1( Hop_Obj_t * pObj )      { return Hop_Regular(pObj->pFanin1);             }
-static inline Hop_Obj_t *  Hop_ObjChild0( Hop_Obj_t * pObj )      { return pObj->pFanin0;                          }
-static inline Hop_Obj_t *  Hop_ObjChild1( Hop_Obj_t * pObj )      { return pObj->pFanin1;                          }
-static inline Hop_Obj_t *  Hop_ObjChild0Copy( Hop_Obj_t * pObj ) { assert( !Hop_IsComplement(pObj) ); return Hop_ObjFanin0(pObj)? Hop_NotCond((Hop_Obj_t *)Hop_ObjFanin0(pObj)->pData, Hop_ObjFaninC0(pObj)) : NULL;  }
-static inline Hop_Obj_t *  Hop_ObjChild1Copy( Hop_Obj_t * pObj ) { assert( !Hop_IsComplement(pObj) ); return Hop_ObjFanin1(pObj)? Hop_NotCond((Hop_Obj_t *)Hop_ObjFanin1(pObj)->pData, Hop_ObjFaninC1(pObj)) : NULL;  }
-static inline int          Hop_ObjLevel( Hop_Obj_t * pObj )       { return pObj->nRefs;                            }
-static inline int          Hop_ObjLevelNew( Hop_Obj_t * pObj )    { return 1 + Hop_ObjIsExor(pObj) + AIG_MAX(Hop_ObjFanin0(pObj)->nRefs, Hop_ObjFanin1(pObj)->nRefs);       }
-static inline int          Hop_ObjFaninPhase( Hop_Obj_t * pObj )  { return Hop_IsComplement(pObj)? !Hop_Regular(pObj)->fPhase : pObj->fPhase; }
-static inline void         Hop_ObjClean( Hop_Obj_t * pObj )       { memset( pObj, 0, sizeof(Hop_Obj_t) ); }
-static inline int          Hop_ObjWhatFanin( Hop_Obj_t * pObj, Hop_Obj_t * pFanin )    
-{ 
-    if ( Hop_ObjFanin0(pObj) == pFanin ) return 0; 
-    if ( Hop_ObjFanin1(pObj) == pFanin ) return 1; 
-    assert(0); return -1; 
-}
-static inline int          Hop_ObjFanoutC( Hop_Obj_t * pObj, Hop_Obj_t * pFanout )    
-{ 
-    if ( Hop_ObjFanin0(pFanout) == pObj ) return Hop_ObjFaninC0(pObj); 
-    if ( Hop_ObjFanin1(pFanout) == pObj ) return Hop_ObjFaninC1(pObj); 
-    assert(0); return -1; 
-}
-
-// create the ghost of the new node
-static inline Hop_Obj_t *  Hop_ObjCreateGhost( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1, Hop_Type_t Type )    
-{
-    Hop_Obj_t * pGhost;
-    assert( Type != AIG_AND || !Hop_ObjIsConst1(Hop_Regular(p0)) );
-    assert( p1 == NULL || !Hop_ObjIsConst1(Hop_Regular(p1)) );
-    assert( Type == AIG_PI || Hop_Regular(p0) != Hop_Regular(p1) );
-    pGhost = Hop_ManGhost(p);
-    pGhost->Type = Type;
-    if ( Hop_Regular(p0)->Id < Hop_Regular(p1)->Id )
-    {
-        pGhost->pFanin0 = p0;
-        pGhost->pFanin1 = p1;
-    }
-    else
-    {
-        pGhost->pFanin0 = p1;
-        pGhost->pFanin1 = p0;
-    }
-    return pGhost;
-}
-
-// internal memory manager
-static inline Hop_Obj_t * Hop_ManFetchMemory( Hop_Man_t * p )  
-{ 
-    extern void Hop_ManAddMemory( Hop_Man_t * p );
-    Hop_Obj_t * pTemp;
-    if ( p->pListFree == NULL )
-        Hop_ManAddMemory( p );
-    pTemp = p->pListFree;
-    p->pListFree = *((Hop_Obj_t **)pTemp);
-    memset( pTemp, 0, sizeof(Hop_Obj_t) ); 
-    if ( p->vObjs )
-    {
-        assert( p->nCreated == Vec_PtrSize(p->vObjs) );
-        Vec_PtrPush( p->vObjs, pTemp );
-    }
-    pTemp->Id = p->nCreated++;
-    return pTemp;
-}
-static inline void Hop_ManRecycleMemory( Hop_Man_t * p, Hop_Obj_t * pEntry )
-{
-    pEntry->Type = AIG_NONE; // distinquishes dead node from live node
-    *((Hop_Obj_t **)pEntry) = p->pListFree;
-    p->pListFree = pEntry;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                             ITERATORS                            ///
-////////////////////////////////////////////////////////////////////////
-
-// iterator over the primary inputs
-#define Hop_ManForEachPi( p, pObj, i )                                          \
-    Vec_PtrForEachEntry( p->vPis, pObj, i )
-// iterator over the primary outputs
-#define Hop_ManForEachPo( p, pObj, i )                                          \
-    Vec_PtrForEachEntry( p->vPos, pObj, i )
-// iterator over all objects, including those currently not used
-#define Hop_ManForEachNode( p, pObj, i )                                        \
-    for ( i = 0; i < p->nTableSize; i++ )                                       \
-        if ( ((pObj) = p->pTable[i]) == NULL ) {} else
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== hopBalance.c ========================================================*/
-extern Hop_Man_t *     Hop_ManBalance( Hop_Man_t * p, int fUpdateLevel );
-extern Hop_Obj_t *     Hop_NodeBalanceBuildSuper( Hop_Man_t * p, Vec_Ptr_t * vSuper, Hop_Type_t Type, int fUpdateLevel );
-/*=== hopCheck.c ========================================================*/
-extern int             Hop_ManCheck( Hop_Man_t * p );
-/*=== hopDfs.c ==========================================================*/
-extern Vec_Ptr_t *     Hop_ManDfs( Hop_Man_t * p );
-extern Vec_Ptr_t *     Hop_ManDfsNode( Hop_Man_t * p, Hop_Obj_t * pNode );
-extern int             Hop_ManCountLevels( Hop_Man_t * p );
-extern void            Hop_ManCreateRefs( Hop_Man_t * p );
-extern int             Hop_DagSize( Hop_Obj_t * pObj );
-extern void            Hop_ConeUnmark_rec( Hop_Obj_t * pObj );
-extern Hop_Obj_t *     Hop_Transfer( Hop_Man_t * pSour, Hop_Man_t * pDest, Hop_Obj_t * pObj, int nVars );
-extern Hop_Obj_t *     Hop_Compose( Hop_Man_t * p, Hop_Obj_t * pRoot, Hop_Obj_t * pFunc, int iVar );
-/*=== hopMan.c ==========================================================*/
-extern Hop_Man_t *     Hop_ManStart();
-extern Hop_Man_t *     Hop_ManDup( Hop_Man_t * p );
-extern void            Hop_ManStop( Hop_Man_t * p );
-extern int             Hop_ManCleanup( Hop_Man_t * p );
-extern void            Hop_ManPrintStats( Hop_Man_t * p );
-/*=== hopMem.c ==========================================================*/
-extern void            Hop_ManStartMemory( Hop_Man_t * p );
-extern void            Hop_ManStopMemory( Hop_Man_t * p );
-/*=== hopObj.c ==========================================================*/
-extern Hop_Obj_t *     Hop_ObjCreatePi( Hop_Man_t * p );
-extern Hop_Obj_t *     Hop_ObjCreatePo( Hop_Man_t * p, Hop_Obj_t * pDriver );
-extern Hop_Obj_t *     Hop_ObjCreate( Hop_Man_t * p, Hop_Obj_t * pGhost );
-extern void            Hop_ObjConnect( Hop_Man_t * p, Hop_Obj_t * pObj, Hop_Obj_t * pFan0, Hop_Obj_t * pFan1 );
-extern void            Hop_ObjDisconnect( Hop_Man_t * p, Hop_Obj_t * pObj );
-extern void            Hop_ObjDelete( Hop_Man_t * p, Hop_Obj_t * pObj );
-extern void            Hop_ObjDelete_rec( Hop_Man_t * p, Hop_Obj_t * pObj );
-extern Hop_Obj_t *     Hop_ObjRepr( Hop_Obj_t * pObj );
-extern void            Hop_ObjCreateChoice( Hop_Obj_t * pOld, Hop_Obj_t * pNew );
-/*=== hopOper.c =========================================================*/
-extern Hop_Obj_t *     Hop_IthVar( Hop_Man_t * p, int i );
-extern Hop_Obj_t *     Hop_Oper( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1, Hop_Type_t Type );
-extern Hop_Obj_t *     Hop_And( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1 );
-extern Hop_Obj_t *     Hop_Or( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1 );
-extern Hop_Obj_t *     Hop_Exor( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1 );
-extern Hop_Obj_t *     Hop_Mux( Hop_Man_t * p, Hop_Obj_t * pC, Hop_Obj_t * p1, Hop_Obj_t * p0 );
-extern Hop_Obj_t *     Hop_Maj( Hop_Man_t * p, Hop_Obj_t * pA, Hop_Obj_t * pB, Hop_Obj_t * pC );
-extern Hop_Obj_t *     Hop_Miter( Hop_Man_t * p, Vec_Ptr_t * vPairs );
-extern Hop_Obj_t *     Hop_CreateAnd( Hop_Man_t * p, int nVars );
-extern Hop_Obj_t *     Hop_CreateOr( Hop_Man_t * p, int nVars );
-extern Hop_Obj_t *     Hop_CreateExor( Hop_Man_t * p, int nVars );
-/*=== hopTable.c ========================================================*/
-extern Hop_Obj_t *     Hop_TableLookup( Hop_Man_t * p, Hop_Obj_t * pGhost );
-extern void            Hop_TableInsert( Hop_Man_t * p, Hop_Obj_t * pObj );
-extern void            Hop_TableDelete( Hop_Man_t * p, Hop_Obj_t * pObj );
-extern int             Hop_TableCountEntries( Hop_Man_t * p );
-extern void            Hop_TableProfile( Hop_Man_t * p );
-/*=== hopUtil.c =========================================================*/
-extern void            Hop_ManIncrementTravId( Hop_Man_t * p );
-extern void            Hop_ManCleanData( Hop_Man_t * p );
-extern void            Hop_ObjCleanData_rec( Hop_Obj_t * pObj );
-extern void            Hop_ObjCollectMulti( Hop_Obj_t * pFunc, Vec_Ptr_t * vSuper );
-extern int             Hop_ObjIsMuxType( Hop_Obj_t * pObj );
-extern int             Hop_ObjRecognizeExor( Hop_Obj_t * pObj, Hop_Obj_t ** ppFan0, Hop_Obj_t ** ppFan1 );
-extern Hop_Obj_t *     Hop_ObjRecognizeMux( Hop_Obj_t * pObj, Hop_Obj_t ** ppObjT, Hop_Obj_t ** ppObjE );
-extern void            Hop_ObjPrintEqn( FILE * pFile, Hop_Obj_t * pObj, Vec_Vec_t * vLevels, int Level );
-extern void            Hop_ObjPrintVerilog( FILE * pFile, Hop_Obj_t * pObj, Vec_Vec_t * vLevels, int Level );
-extern void            Hop_ObjPrintVerbose( Hop_Obj_t * pObj, int fHaig );
-extern void            Hop_ManPrintVerbose( Hop_Man_t * p, int fHaig );
-extern void            Hop_ManDumpBlif( Hop_Man_t * p, char * pFileName );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/hop/hopBalance.c b/src/aig/hop/hopBalance.c
deleted file mode 100644
index 73c90685..00000000
--- a/src/aig/hop/hopBalance.c
+++ /dev/null
@@ -1,391 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hopBalance.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [Algebraic AIG balancing.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: hopBalance.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static Hop_Obj_t * Hop_NodeBalance_rec( Hop_Man_t * pNew, Hop_Obj_t * pObj, Vec_Vec_t * vStore, int Level, int fUpdateLevel );
-static Vec_Ptr_t * Hop_NodeBalanceCone( Hop_Obj_t * pObj, Vec_Vec_t * vStore, int Level );
-static int         Hop_NodeBalanceFindLeft( Vec_Ptr_t * vSuper );
-static void        Hop_NodeBalancePermute( Hop_Man_t * p, Vec_Ptr_t * vSuper, int LeftBound, int fExor );
-static void        Hop_NodeBalancePushUniqueOrderByLevel( Vec_Ptr_t * vStore, Hop_Obj_t * pObj );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Performs algebraic balancing of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Man_t * Hop_ManBalance( Hop_Man_t * p, int fUpdateLevel )
-{
-    Hop_Man_t * pNew;
-    Hop_Obj_t * pObj, * pObjNew;
-    Vec_Vec_t * vStore;
-    int i;
-    // create the new manager 
-    pNew = Hop_ManStart();
-    pNew->fRefCount = 0;
-    // map the PI nodes
-    Hop_ManCleanData( p );
-    Hop_ManConst1(p)->pData = Hop_ManConst1(pNew);
-    Hop_ManForEachPi( p, pObj, i )
-        pObj->pData = Hop_ObjCreatePi(pNew);
-    // balance the AIG
-    vStore = Vec_VecAlloc( 50 );
-    Hop_ManForEachPo( p, pObj, i )
-    {
-        pObjNew = Hop_NodeBalance_rec( pNew, Hop_ObjFanin0(pObj), vStore, 0, fUpdateLevel );
-        Hop_ObjCreatePo( pNew, Hop_NotCond( pObjNew, Hop_ObjFaninC0(pObj) ) );
-    }
-    Vec_VecFree( vStore );
-    // remove dangling nodes
-//    Hop_ManCreateRefs( pNew );
-//    if ( i = Hop_ManCleanup( pNew ) )
-//        printf( "Cleanup after balancing removed %d dangling nodes.\n", i );
-    // check the resulting AIG
-    if ( !Hop_ManCheck(pNew) )
-        printf( "Hop_ManBalance(): The check has failed.\n" );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the new node constructed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_NodeBalance_rec( Hop_Man_t * pNew, Hop_Obj_t * pObjOld, Vec_Vec_t * vStore, int Level, int fUpdateLevel )
-{
-    Hop_Obj_t * pObjNew;
-    Vec_Ptr_t * vSuper;
-    int i;
-    assert( !Hop_IsComplement(pObjOld) );
-    // return if the result is known
-    if ( pObjOld->pData )
-        return pObjOld->pData;
-    assert( Hop_ObjIsNode(pObjOld) );
-    // get the implication supergate
-    vSuper = Hop_NodeBalanceCone( pObjOld, vStore, Level );
-    // check if supergate contains two nodes in the opposite polarity
-    if ( vSuper->nSize == 0 )
-        return pObjOld->pData = Hop_ManConst0(pNew);
-    if ( Vec_PtrSize(vSuper) < 2 )
-        printf( "BUG!\n" );
-    // for each old node, derive the new well-balanced node
-    for ( i = 0; i < Vec_PtrSize(vSuper); i++ )
-    {
-        pObjNew = Hop_NodeBalance_rec( pNew, Hop_Regular(vSuper->pArray[i]), vStore, Level + 1, fUpdateLevel );
-        vSuper->pArray[i] = Hop_NotCond( pObjNew, Hop_IsComplement(vSuper->pArray[i]) );
-    }
-    // build the supergate
-    pObjNew = Hop_NodeBalanceBuildSuper( pNew, vSuper, Hop_ObjType(pObjOld), fUpdateLevel );
-    // make sure the balanced node is not assigned
-//    assert( pObjOld->Level >= Hop_Regular(pObjNew)->Level );
-    assert( pObjOld->pData == NULL );
-    return pObjOld->pData = pObjNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the nodes of the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_NodeBalanceCone_rec( Hop_Obj_t * pRoot, Hop_Obj_t * pObj, Vec_Ptr_t * vSuper )
-{
-    int RetValue1, RetValue2, i;
-    // check if the node is visited
-    if ( Hop_Regular(pObj)->fMarkB )
-    {
-        // check if the node occurs in the same polarity
-        for ( i = 0; i < vSuper->nSize; i++ )
-            if ( vSuper->pArray[i] == pObj )
-                return 1;
-        // check if the node is present in the opposite polarity
-        for ( i = 0; i < vSuper->nSize; i++ )
-            if ( vSuper->pArray[i] == Hop_Not(pObj) )
-                return -1;
-        assert( 0 );
-        return 0;
-    }
-    // if the new node is complemented or a PI, another gate begins
-    if ( pObj != pRoot && (Hop_IsComplement(pObj) || Hop_ObjType(pObj) != Hop_ObjType(pRoot) || Hop_ObjRefs(pObj) > 1) )
-    {
-        Vec_PtrPush( vSuper, pObj );
-        Hop_Regular(pObj)->fMarkB = 1;
-        return 0;
-    }
-    assert( !Hop_IsComplement(pObj) );
-    assert( Hop_ObjIsNode(pObj) );
-    // go through the branches
-    RetValue1 = Hop_NodeBalanceCone_rec( pRoot, Hop_ObjChild0(pObj), vSuper );
-    RetValue2 = Hop_NodeBalanceCone_rec( pRoot, Hop_ObjChild1(pObj), vSuper );
-    if ( RetValue1 == -1 || RetValue2 == -1 )
-        return -1;
-    // return 1 if at least one branch has a duplicate
-    return RetValue1 || RetValue2;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the nodes of the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Hop_NodeBalanceCone( Hop_Obj_t * pObj, Vec_Vec_t * vStore, int Level )
-{
-    Vec_Ptr_t * vNodes;
-    int RetValue, i;
-    assert( !Hop_IsComplement(pObj) );
-    // extend the storage
-    if ( Vec_VecSize( vStore ) <= Level )
-        Vec_VecPush( vStore, Level, 0 );
-    // get the temporary array of nodes
-    vNodes = Vec_VecEntry( vStore, Level );
-    Vec_PtrClear( vNodes );
-    // collect the nodes in the implication supergate
-    RetValue = Hop_NodeBalanceCone_rec( pObj, pObj, vNodes );
-    assert( vNodes->nSize > 1 );
-    // unmark the visited nodes
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Hop_Regular(pObj)->fMarkB = 0;
-    // if we found the node and its complement in the same implication supergate, 
-    // return empty set of nodes (meaning that we should use constant-0 node)
-    if ( RetValue == -1 )
-        vNodes->nSize = 0;
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Procedure used for sorting the nodes in decreasing order of levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_NodeCompareLevelsDecrease( Hop_Obj_t ** pp1, Hop_Obj_t ** pp2 )
-{
-    int Diff = Hop_ObjLevel(Hop_Regular(*pp1)) - Hop_ObjLevel(Hop_Regular(*pp2));
-    if ( Diff > 0 )
-        return -1;
-    if ( Diff < 0 ) 
-        return 1;
-    return 0; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Builds implication supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_NodeBalanceBuildSuper( Hop_Man_t * p, Vec_Ptr_t * vSuper, Hop_Type_t Type, int fUpdateLevel )
-{
-    Hop_Obj_t * pObj1, * pObj2;
-    int LeftBound;
-    assert( vSuper->nSize > 1 );
-    // sort the new nodes by level in the decreasing order
-    Vec_PtrSort( vSuper, Hop_NodeCompareLevelsDecrease );
-    // balance the nodes
-    while ( vSuper->nSize > 1 )
-    {
-        // find the left bound on the node to be paired
-        LeftBound = (!fUpdateLevel)? 0 : Hop_NodeBalanceFindLeft( vSuper );
-        // find the node that can be shared (if no such node, randomize choice)
-        Hop_NodeBalancePermute( p, vSuper, LeftBound, Type == AIG_EXOR );
-        // pull out the last two nodes
-        pObj1 = Vec_PtrPop(vSuper);
-        pObj2 = Vec_PtrPop(vSuper);
-        Hop_NodeBalancePushUniqueOrderByLevel( vSuper, Hop_Oper(p, pObj1, pObj2, Type) );
-    }
-    return Vec_PtrEntry(vSuper, 0);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Finds the left bound on the next candidate to be paired.]
-
-  Description [The nodes in the array are in the decreasing order of levels. 
-  The last node in the array has the smallest level. By default it would be paired 
-  with the next node on the left. However, it may be possible to pair it with some
-  other node on the left, in such a way that the new node is shared. This procedure
-  finds the index of the left-most node, which can be paired with the last node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_NodeBalanceFindLeft( Vec_Ptr_t * vSuper )
-{
-    Hop_Obj_t * pObjRight, * pObjLeft;
-    int Current;
-    // if two or less nodes, pair with the first
-    if ( Vec_PtrSize(vSuper) < 3 )
-        return 0;
-    // set the pointer to the one before the last
-    Current = Vec_PtrSize(vSuper) - 2;
-    pObjRight = Vec_PtrEntry( vSuper, Current );
-    // go through the nodes to the left of this one
-    for ( Current--; Current >= 0; Current-- )
-    {
-        // get the next node on the left
-        pObjLeft = Vec_PtrEntry( vSuper, Current );
-        // if the level of this node is different, quit the loop
-        if ( Hop_ObjLevel(Hop_Regular(pObjLeft)) != Hop_ObjLevel(Hop_Regular(pObjRight)) )
-            break;
-    }
-    Current++;    
-    // get the node, for which the equality holds
-    pObjLeft = Vec_PtrEntry( vSuper, Current );
-    assert( Hop_ObjLevel(Hop_Regular(pObjLeft)) == Hop_ObjLevel(Hop_Regular(pObjRight)) );
-    return Current;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Moves closer to the end the node that is best for sharing.]
-
-  Description [If there is no node with sharing, randomly chooses one of 
-  the legal nodes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_NodeBalancePermute( Hop_Man_t * p, Vec_Ptr_t * vSuper, int LeftBound, int fExor )
-{
-    Hop_Obj_t * pObj1, * pObj2, * pObj3, * pGhost;
-    int RightBound, i;
-    // get the right bound
-    RightBound = Vec_PtrSize(vSuper) - 2;
-    assert( LeftBound <= RightBound );
-    if ( LeftBound == RightBound )
-        return;
-    // get the two last nodes
-    pObj1 = Vec_PtrEntry( vSuper, RightBound + 1 );
-    pObj2 = Vec_PtrEntry( vSuper, RightBound     );
-    if ( Hop_Regular(pObj1) == p->pConst1 || Hop_Regular(pObj2) == p->pConst1 )
-        return;
-    // find the first node that can be shared
-    for ( i = RightBound; i >= LeftBound; i-- )
-    {
-        pObj3 = Vec_PtrEntry( vSuper, i );
-        if ( Hop_Regular(pObj3) == p->pConst1 )
-        {
-            Vec_PtrWriteEntry( vSuper, i,          pObj2 );
-            Vec_PtrWriteEntry( vSuper, RightBound, pObj3 );
-            return;
-        }
-        pGhost = Hop_ObjCreateGhost( p, pObj1, pObj3, fExor? AIG_EXOR : AIG_AND );
-        if ( Hop_TableLookup( p, pGhost ) )
-        {
-            if ( pObj3 == pObj2 )
-                return;
-            Vec_PtrWriteEntry( vSuper, i,          pObj2 );
-            Vec_PtrWriteEntry( vSuper, RightBound, pObj3 );
-            return;
-        }
-    }
-/*
-    // we did not find the node to share, randomize choice
-    {
-        int Choice = rand() % (RightBound - LeftBound + 1);
-        pObj3 = Vec_PtrEntry( vSuper, LeftBound + Choice );
-        if ( pObj3 == pObj2 )
-            return;
-        Vec_PtrWriteEntry( vSuper, LeftBound + Choice, pObj2 );
-        Vec_PtrWriteEntry( vSuper, RightBound,         pObj3 );
-    }
-*/
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts a new node in the order by levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_NodeBalancePushUniqueOrderByLevel( Vec_Ptr_t * vStore, Hop_Obj_t * pObj )
-{
-    Hop_Obj_t * pObj1, * pObj2;
-    int i;
-    if ( Vec_PtrPushUnique(vStore, pObj) )
-        return;
-    // find the p of the node
-    for ( i = vStore->nSize-1; i > 0; i-- )
-    {
-        pObj1 = vStore->pArray[i  ];
-        pObj2 = vStore->pArray[i-1];
-        if ( Hop_ObjLevel(Hop_Regular(pObj1)) <= Hop_ObjLevel(Hop_Regular(pObj2)) )
-            break;
-        vStore->pArray[i  ] = pObj2;
-        vStore->pArray[i-1] = pObj1;
-    }
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/hopCheck.c b/src/aig/hop/hopCheck.c
deleted file mode 100644
index 9120906f..00000000
--- a/src/aig/hop/hopCheck.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hopCheck.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [AIG checking procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: hopCheck.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Checks the consistency of the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_ManCheck( Hop_Man_t * p )
-{
-    Hop_Obj_t * pObj, * pObj2;
-    int i;
-    // check primary inputs
-    Hop_ManForEachPi( p, pObj, i )
-    {
-        if ( Hop_ObjFanin0(pObj) || Hop_ObjFanin1(pObj) )
-        {
-            printf( "Hop_ManCheck: The PI node \"%p\" has fanins.\n", pObj );
-            return 0;
-        }
-    }
-    // check primary outputs
-    Hop_ManForEachPo( p, pObj, i )
-    {
-        if ( !Hop_ObjFanin0(pObj) )
-        {
-            printf( "Hop_ManCheck: The PO node \"%p\" has NULL fanin.\n", pObj );
-            return 0;
-        }
-        if ( Hop_ObjFanin1(pObj) )
-        {
-            printf( "Hop_ManCheck: The PO node \"%p\" has second fanin.\n", pObj );
-            return 0;
-        }
-    }
-    // check internal nodes
-    Hop_ManForEachNode( p, pObj, i )
-    {
-        if ( !Hop_ObjFanin0(pObj) || !Hop_ObjFanin1(pObj) )
-        {
-            printf( "Hop_ManCheck: The AIG has internal node \"%p\" with a NULL fanin.\n", pObj );
-            return 0;
-        }
-        if ( Hop_ObjFanin0(pObj)->Id >= Hop_ObjFanin1(pObj)->Id )
-        {
-            printf( "Hop_ManCheck: The AIG has node \"%p\" with a wrong ordering of fanins.\n", pObj );
-            return 0;
-        }
-        pObj2 = Hop_TableLookup( p, pObj );
-        if ( pObj2 != pObj )
-        {
-            printf( "Hop_ManCheck: Node \"%p\" is not in the structural hashing table.\n", pObj );
-            return 0;
-        }
-    }
-    // count the total number of nodes
-    if ( Hop_ManObjNum(p) != 1 + Hop_ManPiNum(p) + Hop_ManPoNum(p) + Hop_ManAndNum(p) + Hop_ManExorNum(p) )
-    {
-        printf( "Hop_ManCheck: The number of created nodes is wrong.\n" );
-        return 0;
-    }
-    // count the number of nodes in the table
-    if ( Hop_TableCountEntries(p) != Hop_ManAndNum(p) + Hop_ManExorNum(p) )
-    {
-        printf( "Hop_ManCheck: The number of nodes in the structural hashing table is wrong.\n" );
-        return 0;
-    }
-//    if ( !Hop_ManIsAcyclic(p) )
-//        return 0;
-    return 1; 
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/hopDfs.c b/src/aig/hop/hopDfs.c
deleted file mode 100644
index 49e5f221..00000000
--- a/src/aig/hop/hopDfs.c
+++ /dev/null
@@ -1,399 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hopDfs.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [DFS traversal procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: hopDfs.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManDfs_rec( Hop_Obj_t * pObj, Vec_Ptr_t * vNodes )
-{
-    assert( !Hop_IsComplement(pObj) );
-    if ( !Hop_ObjIsNode(pObj) || Hop_ObjIsMarkA(pObj) )
-        return;
-    Hop_ManDfs_rec( Hop_ObjFanin0(pObj), vNodes );
-    Hop_ManDfs_rec( Hop_ObjFanin1(pObj), vNodes );
-    assert( !Hop_ObjIsMarkA(pObj) ); // loop detection
-    Hop_ObjSetMarkA(pObj);
-    Vec_PtrPush( vNodes, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Hop_ManDfs( Hop_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Hop_Obj_t * pObj;
-    int i;
-    vNodes = Vec_PtrAlloc( Hop_ManNodeNum(p) );
-    Hop_ManForEachNode( p, pObj, i )
-        Hop_ManDfs_rec( pObj, vNodes );
-    Hop_ManForEachNode( p, pObj, i )
-        Hop_ObjClearMarkA(pObj);
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects internal nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Hop_ManDfsNode( Hop_Man_t * p, Hop_Obj_t * pNode )
-{
-    Vec_Ptr_t * vNodes;
-    Hop_Obj_t * pObj;
-    int i;
-    assert( !Hop_IsComplement(pNode) );
-    vNodes = Vec_PtrAlloc( 16 );
-    Hop_ManDfs_rec( pNode, vNodes );
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Hop_ObjClearMarkA(pObj);
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the max number of levels in the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_ManCountLevels( Hop_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Hop_Obj_t * pObj;
-    int i, LevelsMax, Level0, Level1;
-    // initialize the levels
-    Hop_ManConst1(p)->pData = NULL;
-    Hop_ManForEachPi( p, pObj, i )
-        pObj->pData = NULL;
-    // compute levels in a DFS order
-    vNodes = Hop_ManDfs( p );
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-    {
-        Level0 = (int)Hop_ObjFanin0(pObj)->pData;
-        Level1 = (int)Hop_ObjFanin1(pObj)->pData;
-        pObj->pData = (void *)(1 + Hop_ObjIsExor(pObj) + AIG_MAX(Level0, Level1));
-    }
-    Vec_PtrFree( vNodes );
-    // get levels of the POs
-    LevelsMax = 0;
-    Hop_ManForEachPo( p, pObj, i )
-        LevelsMax = AIG_MAX( LevelsMax, (int)Hop_ObjFanin0(pObj)->pData );
-    return LevelsMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates correct reference counters at each node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManCreateRefs( Hop_Man_t * p )
-{
-    Hop_Obj_t * pObj;
-    int i;
-    if ( p->fRefCount )
-        return;
-    p->fRefCount = 1;
-    // clear refs
-    Hop_ObjClearRef( Hop_ManConst1(p) );
-    Hop_ManForEachPi( p, pObj, i )
-        Hop_ObjClearRef( pObj );
-    Hop_ManForEachNode( p, pObj, i )
-        Hop_ObjClearRef( pObj );
-    Hop_ManForEachPo( p, pObj, i )
-        Hop_ObjClearRef( pObj );
-    // set refs
-    Hop_ManForEachNode( p, pObj, i )
-    {
-        Hop_ObjRef( Hop_ObjFanin0(pObj) );
-        Hop_ObjRef( Hop_ObjFanin1(pObj) );
-    }
-    Hop_ManForEachPo( p, pObj, i )
-        Hop_ObjRef( Hop_ObjFanin0(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ConeMark_rec( Hop_Obj_t * pObj )
-{
-    assert( !Hop_IsComplement(pObj) );
-    if ( !Hop_ObjIsNode(pObj) || Hop_ObjIsMarkA(pObj) )
-        return;
-    Hop_ConeMark_rec( Hop_ObjFanin0(pObj) );
-    Hop_ConeMark_rec( Hop_ObjFanin1(pObj) );
-    assert( !Hop_ObjIsMarkA(pObj) ); // loop detection
-    Hop_ObjSetMarkA( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ConeCleanAndMark_rec( Hop_Obj_t * pObj )
-{
-    assert( !Hop_IsComplement(pObj) );
-    if ( !Hop_ObjIsNode(pObj) || Hop_ObjIsMarkA(pObj) )
-        return;
-    Hop_ConeCleanAndMark_rec( Hop_ObjFanin0(pObj) );
-    Hop_ConeCleanAndMark_rec( Hop_ObjFanin1(pObj) );
-    assert( !Hop_ObjIsMarkA(pObj) ); // loop detection
-    Hop_ObjSetMarkA( pObj );
-    pObj->pData = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_ConeCountAndMark_rec( Hop_Obj_t * pObj )
-{
-    int Counter;
-    assert( !Hop_IsComplement(pObj) );
-    if ( !Hop_ObjIsNode(pObj) || Hop_ObjIsMarkA(pObj) )
-        return 0;
-    Counter = 1 + Hop_ConeCountAndMark_rec( Hop_ObjFanin0(pObj) ) + 
-        Hop_ConeCountAndMark_rec( Hop_ObjFanin1(pObj) );
-    assert( !Hop_ObjIsMarkA(pObj) ); // loop detection
-    Hop_ObjSetMarkA( pObj );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ConeUnmark_rec( Hop_Obj_t * pObj )
-{
-    assert( !Hop_IsComplement(pObj) );
-    if ( !Hop_ObjIsNode(pObj) || !Hop_ObjIsMarkA(pObj) )
-        return;
-    Hop_ConeUnmark_rec( Hop_ObjFanin0(pObj) ); 
-    Hop_ConeUnmark_rec( Hop_ObjFanin1(pObj) );
-    assert( Hop_ObjIsMarkA(pObj) ); // loop detection
-    Hop_ObjClearMarkA( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of AIG nodes rooted at this cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_DagSize( Hop_Obj_t * pObj )
-{
-    int Counter;
-    Counter = Hop_ConeCountAndMark_rec( Hop_Regular(pObj) );
-    Hop_ConeUnmark_rec( Hop_Regular(pObj) );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers the AIG from one manager into another.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_Transfer_rec( Hop_Man_t * pDest, Hop_Obj_t * pObj )
-{
-    assert( !Hop_IsComplement(pObj) );
-    if ( !Hop_ObjIsNode(pObj) || Hop_ObjIsMarkA(pObj) )
-        return;
-    Hop_Transfer_rec( pDest, Hop_ObjFanin0(pObj) ); 
-    Hop_Transfer_rec( pDest, Hop_ObjFanin1(pObj) );
-    pObj->pData = Hop_And( pDest, Hop_ObjChild0Copy(pObj), Hop_ObjChild1Copy(pObj) );
-    assert( !Hop_ObjIsMarkA(pObj) ); // loop detection
-    Hop_ObjSetMarkA( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers the AIG from one manager into another.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Transfer( Hop_Man_t * pSour, Hop_Man_t * pDest, Hop_Obj_t * pRoot, int nVars )
-{
-    Hop_Obj_t * pObj;
-    int i;
-    // solve simple cases
-    if ( pSour == pDest )
-        return pRoot;
-    if ( Hop_ObjIsConst1( Hop_Regular(pRoot) ) )
-        return Hop_NotCond( Hop_ManConst1(pDest), Hop_IsComplement(pRoot) );
-    // set the PI mapping
-    Hop_ManForEachPi( pSour, pObj, i )
-    {
-        if ( i == nVars )
-           break;
-        pObj->pData = Hop_IthVar(pDest, i);
-    }
-    // transfer and set markings
-    Hop_Transfer_rec( pDest, Hop_Regular(pRoot) );
-    // clear the markings
-    Hop_ConeUnmark_rec( Hop_Regular(pRoot) );
-    return Hop_NotCond( Hop_Regular(pRoot)->pData, Hop_IsComplement(pRoot) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Composes the AIG (pRoot) with the function (pFunc) using PI var (iVar).]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_Compose_rec( Hop_Man_t * p, Hop_Obj_t * pObj, Hop_Obj_t * pFunc, Hop_Obj_t * pVar )
-{
-    assert( !Hop_IsComplement(pObj) );
-    if ( Hop_ObjIsMarkA(pObj) )
-        return;
-    if ( Hop_ObjIsConst1(pObj) || Hop_ObjIsPi(pObj) )
-    {
-        pObj->pData = pObj == pVar ? pFunc : pObj;
-        return;
-    }
-    Hop_Compose_rec( p, Hop_ObjFanin0(pObj), pFunc, pVar ); 
-    Hop_Compose_rec( p, Hop_ObjFanin1(pObj), pFunc, pVar );
-    pObj->pData = Hop_And( p, Hop_ObjChild0Copy(pObj), Hop_ObjChild1Copy(pObj) );
-    assert( !Hop_ObjIsMarkA(pObj) ); // loop detection
-    Hop_ObjSetMarkA( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Composes the AIG (pRoot) with the function (pFunc) using PI var (iVar).]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Compose( Hop_Man_t * p, Hop_Obj_t * pRoot, Hop_Obj_t * pFunc, int iVar )
-{
-    // quit if the PI variable is not defined
-    if ( iVar >= Hop_ManPiNum(p) )
-    {
-        printf( "Hop_Compose(): The PI variable %d is not defined.\n", iVar );
-        return NULL;
-    }
-    // recursively perform composition
-    Hop_Compose_rec( p, Hop_Regular(pRoot), pFunc, Hop_ManPi(p, iVar) );
-    // clear the markings
-    Hop_ConeUnmark_rec( Hop_Regular(pRoot) );
-    return Hop_NotCond( Hop_Regular(pRoot)->pData, Hop_IsComplement(pRoot) );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/hopMan.c b/src/aig/hop/hopMan.c
deleted file mode 100644
index 99f5d316..00000000
--- a/src/aig/hop/hopMan.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hopMan.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [AIG manager.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: hopMan.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Man_t * Hop_ManStart()
-{
-    Hop_Man_t * p;
-    // start the manager
-    p = ALLOC( Hop_Man_t, 1 );
-    memset( p, 0, sizeof(Hop_Man_t) );
-    // perform initializations
-    p->nTravIds = 1;
-    p->fRefCount = 1;
-    p->fCatchExor = 0;
-    // allocate arrays for nodes
-    p->vPis = Vec_PtrAlloc( 100 );
-    p->vPos = Vec_PtrAlloc( 100 );
-    // prepare the internal memory manager
-    Hop_ManStartMemory( p );
-    // create the constant node
-    p->pConst1 = Hop_ManFetchMemory( p );
-    p->pConst1->Type = AIG_CONST1;
-    p->pConst1->fPhase = 1;
-    p->nCreated = 1;
-    // start the table
-//    p->nTableSize = 107;
-    p->nTableSize = 10007;
-    p->pTable = ALLOC( Hop_Obj_t *, p->nTableSize );
-    memset( p->pTable, 0, sizeof(Hop_Obj_t *) * p->nTableSize );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManStop( Hop_Man_t * p )
-{
-    Hop_Obj_t * pObj;
-    int i;
-    // make sure the nodes have clean marks
-    pObj = Hop_ManConst1(p);
-    assert( !pObj->fMarkA && !pObj->fMarkB );
-    Hop_ManForEachPi( p, pObj, i )
-        assert( !pObj->fMarkA && !pObj->fMarkB );
-    Hop_ManForEachPo( p, pObj, i )
-        assert( !pObj->fMarkA && !pObj->fMarkB );
-    Hop_ManForEachNode( p, pObj, i )
-        assert( !pObj->fMarkA && !pObj->fMarkB );
-    // print time
-    if ( p->time1 ) { PRT( "time1", p->time1 ); }
-    if ( p->time2 ) { PRT( "time2", p->time2 ); }
-//    Hop_TableProfile( p );
-    if ( p->vChunks )  Hop_ManStopMemory( p );
-    if ( p->vPis )     Vec_PtrFree( p->vPis );
-    if ( p->vPos )     Vec_PtrFree( p->vPos );
-    if ( p->vObjs )    Vec_PtrFree( p->vObjs );
-    free( p->pTable );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of dangling nodes removed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_ManCleanup( Hop_Man_t * p )
-{
-    Vec_Ptr_t * vObjs;
-    Hop_Obj_t * pNode;
-    int i, nNodesOld;
-    assert( p->fRefCount );
-    nNodesOld = Hop_ManNodeNum(p);
-    // collect roots of dangling nodes
-    vObjs = Vec_PtrAlloc( 100 );
-    Hop_ManForEachNode( p, pNode, i )
-        if ( Hop_ObjRefs(pNode) == 0 )
-            Vec_PtrPush( vObjs, pNode );
-    // recursively remove dangling nodes
-    Vec_PtrForEachEntry( vObjs, pNode, i )
-        Hop_ObjDelete_rec( p, pNode );
-    Vec_PtrFree( vObjs );
-    return nNodesOld - Hop_ManNodeNum(p);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManPrintStats( Hop_Man_t * p )
-{
-    printf( "PI/PO = %d/%d. ", Hop_ManPiNum(p), Hop_ManPoNum(p) );
-    printf( "A = %7d. ",       Hop_ManAndNum(p) );
-    printf( "X = %5d. ",       Hop_ManExorNum(p) );
-    printf( "Cre = %7d. ",     p->nCreated );
-    printf( "Del = %7d. ",     p->nDeleted );
-    printf( "Lev = %3d. ",     Hop_ManCountLevels(p) );
-    printf( "\n" );
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/hopMem.c b/src/aig/hop/hopMem.c
deleted file mode 100644
index 0665470a..00000000
--- a/src/aig/hop/hopMem.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hopMem.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [Memory management for the AIG nodes.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: hopMem.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// memory management
-#define IVY_PAGE_SIZE      12        // page size containing 2^IVY_PAGE_SIZE nodes
-#define IVY_PAGE_MASK    4095        // page bitmask (2^IVY_PAGE_SIZE)-1
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the internal memory manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManStartMemory( Hop_Man_t * p )
-{
-    p->vChunks = Vec_PtrAlloc( 128 );
-    p->vPages = Vec_PtrAlloc( 128 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the internal memory manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManStopMemory( Hop_Man_t * p )
-{
-    void * pMemory;
-    int i;
-    Vec_PtrForEachEntry( p->vChunks, pMemory, i )
-        free( pMemory );
-    Vec_PtrFree( p->vChunks );
-    Vec_PtrFree( p->vPages );
-    p->pListFree = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates additional memory for the nodes.]
-
-  Description [Allocates IVY_PAGE_SIZE nodes. Aligns memory by 32 bytes. 
-  Records the pointer to the AIG manager in the -1 entry.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManAddMemory( Hop_Man_t * p )
-{
-    char * pMemory;
-    int i, nBytes;
-    assert( sizeof(Hop_Obj_t) <= 64 );
-    assert( p->pListFree == NULL );
-//    assert( (Hop_ManObjNum(p) & IVY_PAGE_MASK) == 0 );
-    // allocate new memory page
-    nBytes = sizeof(Hop_Obj_t) * (1<<IVY_PAGE_SIZE) + 64;
-    pMemory = ALLOC( char, nBytes );
-    Vec_PtrPush( p->vChunks, pMemory );
-    // align memory at the 32-byte boundary
-    pMemory = pMemory + 64 - (((int)pMemory) & 63);
-    // remember the manager in the first entry
-    Vec_PtrPush( p->vPages, pMemory );
-    // break the memory down into nodes
-    p->pListFree = (Hop_Obj_t *)pMemory;
-    for ( i = 1; i <= IVY_PAGE_MASK; i++ )
-    {
-        *((char **)pMemory) = pMemory + sizeof(Hop_Obj_t);
-        pMemory += sizeof(Hop_Obj_t);
-    }
-    *((char **)pMemory) = NULL;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/hopObj.c b/src/aig/hop/hopObj.c
deleted file mode 100644
index c8e70dd3..00000000
--- a/src/aig/hop/hopObj.c
+++ /dev/null
@@ -1,271 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hopObj.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [Adding/removing objects.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: hopObj.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Creates primary input.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_ObjCreatePi( Hop_Man_t * p )
-{
-    Hop_Obj_t * pObj;
-    pObj = Hop_ManFetchMemory( p );
-    pObj->Type = AIG_PI;
-    Vec_PtrPush( p->vPis, pObj );
-    p->nObjs[AIG_PI]++;
-    return pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates primary output with the given driver.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_ObjCreatePo( Hop_Man_t * p, Hop_Obj_t * pDriver )
-{
-    Hop_Obj_t * pObj;
-    pObj = Hop_ManFetchMemory( p );
-    pObj->Type = AIG_PO;
-    Vec_PtrPush( p->vPos, pObj );
-    // add connections
-    pObj->pFanin0 = pDriver;
-    if ( p->fRefCount )
-        Hop_ObjRef( Hop_Regular(pDriver) );
-    else
-        pObj->nRefs = Hop_ObjLevel( Hop_Regular(pDriver) );
-    // set the phase
-    pObj->fPhase = Hop_ObjFaninPhase(pDriver);
-    // update node counters of the manager
-    p->nObjs[AIG_PO]++;
-    return pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Create the new node assuming it does not exist.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_ObjCreate( Hop_Man_t * p, Hop_Obj_t * pGhost )
-{
-    Hop_Obj_t * pObj;
-    assert( !Hop_IsComplement(pGhost) );
-    assert( Hop_ObjIsNode(pGhost) );
-    assert( pGhost == &p->Ghost );
-    // get memory for the new object
-    pObj = Hop_ManFetchMemory( p );
-    pObj->Type = pGhost->Type;
-    // add connections
-    Hop_ObjConnect( p, pObj, pGhost->pFanin0, pGhost->pFanin1 );
-    // update node counters of the manager
-    p->nObjs[Hop_ObjType(pObj)]++;
-    assert( pObj->pData == NULL );
-    return pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Connect the object to the fanin.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjConnect( Hop_Man_t * p, Hop_Obj_t * pObj, Hop_Obj_t * pFan0, Hop_Obj_t * pFan1 )
-{
-    assert( !Hop_IsComplement(pObj) );
-    assert( Hop_ObjIsNode(pObj) );
-    // add the first fanin
-    pObj->pFanin0 = pFan0;
-    pObj->pFanin1 = pFan1;
-    // increment references of the fanins and add their fanouts
-    if ( p->fRefCount )
-    {
-        if ( pFan0 != NULL )
-            Hop_ObjRef( Hop_ObjFanin0(pObj) );
-        if ( pFan1 != NULL )
-            Hop_ObjRef( Hop_ObjFanin1(pObj) );
-    }
-    else
-        pObj->nRefs = Hop_ObjLevelNew( pObj );
-    // set the phase
-    pObj->fPhase = Hop_ObjFaninPhase(pFan0) & Hop_ObjFaninPhase(pFan1);
-    // add the node to the structural hash table
-    Hop_TableInsert( p, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Connect the object to the fanin.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjDisconnect( Hop_Man_t * p, Hop_Obj_t * pObj )
-{
-    assert( !Hop_IsComplement(pObj) );
-    assert( Hop_ObjIsNode(pObj) );
-    // remove connections
-    if ( pObj->pFanin0 != NULL )
-        Hop_ObjDeref(Hop_ObjFanin0(pObj));
-    if ( pObj->pFanin1 != NULL )
-        Hop_ObjDeref(Hop_ObjFanin1(pObj));
-    // remove the node from the structural hash table
-    Hop_TableDelete( p, pObj );
-    // add the first fanin
-    pObj->pFanin0 = NULL;
-    pObj->pFanin1 = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjDelete( Hop_Man_t * p, Hop_Obj_t * pObj )
-{
-    assert( !Hop_IsComplement(pObj) );
-    assert( !Hop_ObjIsTerm(pObj) );
-    assert( Hop_ObjRefs(pObj) == 0 );
-    // update node counters of the manager
-    p->nObjs[pObj->Type]--;
-    p->nDeleted++;
-    // remove connections
-    Hop_ObjDisconnect( p, pObj );
-    // remove PIs/POs from the arrays
-    if ( Hop_ObjIsPi(pObj) )
-        Vec_PtrRemove( p->vPis, pObj );
-    // free the node
-    Hop_ManRecycleMemory( p, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the MFFC of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjDelete_rec( Hop_Man_t * p, Hop_Obj_t * pObj )
-{
-    Hop_Obj_t * pFanin0, * pFanin1;
-    assert( !Hop_IsComplement(pObj) );
-    if ( Hop_ObjIsConst1(pObj) || Hop_ObjIsPi(pObj) )
-        return;
-    assert( Hop_ObjIsNode(pObj) );
-    pFanin0 = Hop_ObjFanin0(pObj);
-    pFanin1 = Hop_ObjFanin1(pObj);
-    Hop_ObjDelete( p, pObj );
-    if ( pFanin0 && !Hop_ObjIsNone(pFanin0) && Hop_ObjRefs(pFanin0) == 0 )
-        Hop_ObjDelete_rec( p, pFanin0 );
-    if ( pFanin1 && !Hop_ObjIsNone(pFanin1) && Hop_ObjRefs(pFanin1) == 0 )
-        Hop_ObjDelete_rec( p, pFanin1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the representative of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_ObjRepr( Hop_Obj_t * pObj )
-{
-    assert( !Hop_IsComplement(pObj) );
-    if ( pObj->pData == NULL || pObj->pData == pObj )
-        return pObj;
-    return Hop_ObjRepr( pObj->pData );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets an equivalence relation between the nodes.]
-
-  Description [Makes the representative of pNew point to the representaive of pOld.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjCreateChoice( Hop_Obj_t * pOld, Hop_Obj_t * pNew )
-{
-    Hop_Obj_t * pOldRepr;
-    Hop_Obj_t * pNewRepr;
-    assert( pOld != NULL && pNew != NULL );
-    pOldRepr = Hop_ObjRepr(pOld);
-    pNewRepr = Hop_ObjRepr(pNew);
-    if ( pNewRepr != pOldRepr )
-        pNewRepr->pData = pOldRepr;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/hopOper.c b/src/aig/hop/hopOper.c
deleted file mode 100644
index a31ca0f2..00000000
--- a/src/aig/hop/hopOper.c
+++ /dev/null
@@ -1,373 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hopOper.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [AIG operations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: hopOper.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// procedure to detect an EXOR gate
-static inline int Hop_ObjIsExorType( Hop_Obj_t * p0, Hop_Obj_t * p1, Hop_Obj_t ** ppFan0, Hop_Obj_t ** ppFan1 )
-{
-    if ( !Hop_IsComplement(p0) || !Hop_IsComplement(p1) )
-        return 0;
-    p0 = Hop_Regular(p0);
-    p1 = Hop_Regular(p1);
-    if ( !Hop_ObjIsAnd(p0) || !Hop_ObjIsAnd(p1) )
-        return 0;
-    if ( Hop_ObjFanin0(p0) != Hop_ObjFanin0(p1) || Hop_ObjFanin1(p0) != Hop_ObjFanin1(p1) )
-        return 0;
-    if ( Hop_ObjFaninC0(p0) == Hop_ObjFaninC0(p1) || Hop_ObjFaninC1(p0) == Hop_ObjFaninC1(p1) )
-        return 0;
-    *ppFan0 = Hop_ObjChild0(p0);
-    *ppFan1 = Hop_ObjChild1(p0);
-    return 1;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Returns i-th elementary variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_IthVar( Hop_Man_t * p, int i )
-{
-    int v;
-    for ( v = Hop_ManPiNum(p); v <= i; v++ )
-        Hop_ObjCreatePi( p );
-    assert( i < Vec_PtrSize(p->vPis) );
-    return Hop_ManPi( p, i );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Perform one operation.]
-
-  Description [The argument nodes can be complemented.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Oper( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1, Hop_Type_t Type )
-{
-    if ( Type == AIG_AND )
-        return Hop_And( p, p0, p1 );
-    if ( Type == AIG_EXOR )
-        return Hop_Exor( p, p0, p1 );
-    assert( 0 );
-    return NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs canonicization step.]
-
-  Description [The argument nodes can be complemented.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_And( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1 )
-{
-    Hop_Obj_t * pGhost, * pResult;
-//    Hop_Obj_t * pFan0, * pFan1;
-    // check trivial cases
-    if ( p0 == p1 )
-        return p0;
-    if ( p0 == Hop_Not(p1) )
-        return Hop_Not(p->pConst1);
-    if ( Hop_Regular(p0) == p->pConst1 )
-        return p0 == p->pConst1 ? p1 : Hop_Not(p->pConst1);
-    if ( Hop_Regular(p1) == p->pConst1 )
-        return p1 == p->pConst1 ? p0 : Hop_Not(p->pConst1);
-    // check if it can be an EXOR gate
-//    if ( Hop_ObjIsExorType( p0, p1, &pFan0, &pFan1 ) )
-//        return Hop_Exor( p, pFan0, pFan1 );
-    // check the table
-    pGhost = Hop_ObjCreateGhost( p, p0, p1, AIG_AND );
-    if ( pResult = Hop_TableLookup( p, pGhost ) )
-        return pResult;
-    return Hop_ObjCreate( p, pGhost );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs canonicization step.]
-
-  Description [The argument nodes can be complemented.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Exor( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1 )
-{
-/*
-    Hop_Obj_t * pGhost, * pResult;
-    // check trivial cases
-    if ( p0 == p1 )
-        return Hop_Not(p->pConst1);
-    if ( p0 == Hop_Not(p1) )
-        return p->pConst1;
-    if ( Hop_Regular(p0) == p->pConst1 )
-        return Hop_NotCond( p1, p0 == p->pConst1 );
-    if ( Hop_Regular(p1) == p->pConst1 )
-        return Hop_NotCond( p0, p1 == p->pConst1 );
-    // check the table
-    pGhost = Hop_ObjCreateGhost( p, p0, p1, AIG_EXOR );
-    if ( pResult = Hop_TableLookup( p, pGhost ) )
-        return pResult;
-    return Hop_ObjCreate( p, pGhost );
-*/
-    return Hop_Or( p, Hop_And(p, p0, Hop_Not(p1)), Hop_And(p, Hop_Not(p0), p1) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements Boolean OR.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Or( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1 )
-{
-    return Hop_Not( Hop_And( p, Hop_Not(p0), Hop_Not(p1) ) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements ITE operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Mux( Hop_Man_t * p, Hop_Obj_t * pC, Hop_Obj_t * p1, Hop_Obj_t * p0 )
-{
-/*    
-    Hop_Obj_t * pTempA1, * pTempA2, * pTempB1, * pTempB2, * pTemp;
-    int Count0, Count1;
-    // consider trivial cases
-    if ( p0 == Hop_Not(p1) )
-        return Hop_Exor( p, pC, p0 );
-    // other cases can be added
-    // implement the first MUX (F = C * x1 + C' * x0)
-
-    // check for constants here!!!
-
-    pTempA1 = Hop_TableLookup( p, Hop_ObjCreateGhost(p, pC,          p1, AIG_AND) );
-    pTempA2 = Hop_TableLookup( p, Hop_ObjCreateGhost(p, Hop_Not(pC), p0, AIG_AND) );
-    if ( pTempA1 && pTempA2 )
-    {
-        pTemp = Hop_TableLookup( p, Hop_ObjCreateGhost(p, Hop_Not(pTempA1), Hop_Not(pTempA2), AIG_AND) );
-        if ( pTemp ) return Hop_Not(pTemp);
-    }
-    Count0 = (pTempA1 != NULL) + (pTempA2 != NULL);
-    // implement the second MUX (F' = C * x1' + C' * x0')
-    pTempB1 = Hop_TableLookup( p, Hop_ObjCreateGhost(p, pC,          Hop_Not(p1), AIG_AND) );
-    pTempB2 = Hop_TableLookup( p, Hop_ObjCreateGhost(p, Hop_Not(pC), Hop_Not(p0), AIG_AND) );
-    if ( pTempB1 && pTempB2 )
-    {
-        pTemp = Hop_TableLookup( p, Hop_ObjCreateGhost(p, Hop_Not(pTempB1), Hop_Not(pTempB2), AIG_AND) );
-        if ( pTemp ) return pTemp;
-    }
-    Count1 = (pTempB1 != NULL) + (pTempB2 != NULL);
-    // compare and decide which one to implement
-    if ( Count0 >= Count1 )
-    {
-        pTempA1 = pTempA1? pTempA1 : Hop_And(p, pC,          p1);
-        pTempA2 = pTempA2? pTempA2 : Hop_And(p, Hop_Not(pC), p0);
-        return Hop_Or( p, pTempA1, pTempA2 );
-    }
-    pTempB1 = pTempB1? pTempB1 : Hop_And(p, pC,          Hop_Not(p1));
-    pTempB2 = pTempB2? pTempB2 : Hop_And(p, Hop_Not(pC), Hop_Not(p0));
-    return Hop_Not( Hop_Or( p, pTempB1, pTempB2 ) );
-*/
-    return Hop_Or( p, Hop_And(p, pC, p1), Hop_And(p, Hop_Not(pC), p0) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements ITE operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Maj( Hop_Man_t * p, Hop_Obj_t * pA, Hop_Obj_t * pB, Hop_Obj_t * pC )
-{
-    return Hop_Or( p, Hop_Or(p, Hop_And(p, pA, pB), Hop_And(p, pA, pC)), Hop_And(p, pB, pC) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Constructs the well-balanced tree of gates.]
-
-  Description [Disregards levels and possible logic sharing.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Multi_rec( Hop_Man_t * p, Hop_Obj_t ** ppObjs, int nObjs, Hop_Type_t Type )
-{
-    Hop_Obj_t * pObj1, * pObj2;
-    if ( nObjs == 1 )
-        return ppObjs[0];
-    pObj1 = Hop_Multi_rec( p, ppObjs,           nObjs/2,         Type );
-    pObj2 = Hop_Multi_rec( p, ppObjs + nObjs/2, nObjs - nObjs/2, Type );
-    return Hop_Oper( p, pObj1, pObj2, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Old code.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Multi( Hop_Man_t * p, Hop_Obj_t ** pArgs, int nArgs, Hop_Type_t Type )
-{
-    assert( Type == AIG_AND || Type == AIG_EXOR );
-    assert( nArgs > 0 );
-    return Hop_Multi_rec( p, pArgs, nArgs, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_Miter( Hop_Man_t * p, Vec_Ptr_t * vPairs )
-{
-    int i;
-    assert( vPairs->nSize > 0 );
-    assert( vPairs->nSize % 2 == 0 );
-    // go through the cubes of the node's SOP
-    for ( i = 0; i < vPairs->nSize; i += 2 )
-        vPairs->pArray[i/2] = Hop_Not( Hop_Exor( p, vPairs->pArray[i], vPairs->pArray[i+1] ) );
-    vPairs->nSize = vPairs->nSize/2;
-    return Hop_Not( Hop_Multi_rec( p, (Hop_Obj_t **)vPairs->pArray, vPairs->nSize, AIG_AND ) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates AND function with nVars inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_CreateAnd( Hop_Man_t * p, int nVars )
-{
-    Hop_Obj_t * pFunc;
-    int i;
-    pFunc = Hop_ManConst1( p );
-    for ( i = 0; i < nVars; i++ )
-        pFunc = Hop_And( p, pFunc, Hop_IthVar(p, i) );
-    return pFunc;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates AND function with nVars inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_CreateOr( Hop_Man_t * p, int nVars )
-{
-    Hop_Obj_t * pFunc;
-    int i;
-    pFunc = Hop_ManConst0( p );
-    for ( i = 0; i < nVars; i++ )
-        pFunc = Hop_Or( p, pFunc, Hop_IthVar(p, i) );
-    return pFunc;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates AND function with nVars inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_CreateExor( Hop_Man_t * p, int nVars )
-{
-    Hop_Obj_t * pFunc;
-    int i;
-    pFunc = Hop_ManConst0( p );
-    for ( i = 0; i < nVars; i++ )
-        pFunc = Hop_Exor( p, pFunc, Hop_IthVar(p, i) );
-    return pFunc;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/hopTable.c b/src/aig/hop/hopTable.c
deleted file mode 100644
index 76390054..00000000
--- a/src/aig/hop/hopTable.c
+++ /dev/null
@@ -1,262 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hopTable.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    [Structural hashing table.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006. ]
-
-  Revision    [$Id: hopTable.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// hashing the node
-static unsigned long Hop_Hash( Hop_Obj_t * pObj, int TableSize ) 
-{
-    unsigned long Key = Hop_ObjIsExor(pObj) * 1699;
-    Key ^= Hop_ObjFanin0(pObj)->Id * 7937;
-    Key ^= Hop_ObjFanin1(pObj)->Id * 2971;
-    Key ^= Hop_ObjFaninC0(pObj) * 911;
-    Key ^= Hop_ObjFaninC1(pObj) * 353;
-    return Key % TableSize;
-}
-
-// returns the place where this node is stored (or should be stored)
-static Hop_Obj_t ** Hop_TableFind( Hop_Man_t * p, Hop_Obj_t * pObj )
-{
-    Hop_Obj_t ** ppEntry;
-    assert( Hop_ObjChild0(pObj) && Hop_ObjChild1(pObj) );
-    assert( Hop_ObjFanin0(pObj)->Id < Hop_ObjFanin1(pObj)->Id );
-    for ( ppEntry = p->pTable + Hop_Hash(pObj, p->nTableSize); *ppEntry; ppEntry = &(*ppEntry)->pNext )
-        if ( *ppEntry == pObj )
-            return ppEntry;
-    assert( *ppEntry == NULL );
-    return ppEntry;
-}
-
-static void         Hop_TableResize( Hop_Man_t * p );
-static unsigned int Cudd_PrimeAig( unsigned int  p );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
- 
-/**Function*************************************************************
-
-  Synopsis    [Checks if a node with the given attributes is in the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_TableLookup( Hop_Man_t * p, Hop_Obj_t * pGhost )
-{
-    Hop_Obj_t * pEntry;
-    assert( !Hop_IsComplement(pGhost) );
-    assert( Hop_ObjChild0(pGhost) && Hop_ObjChild1(pGhost) );
-    assert( Hop_ObjFanin0(pGhost)->Id < Hop_ObjFanin1(pGhost)->Id );
-    if ( p->fRefCount && (!Hop_ObjRefs(Hop_ObjFanin0(pGhost)) || !Hop_ObjRefs(Hop_ObjFanin1(pGhost))) )
-        return NULL;
-    for ( pEntry = p->pTable[Hop_Hash(pGhost, p->nTableSize)]; pEntry; pEntry = pEntry->pNext )
-    {
-        if ( Hop_ObjChild0(pEntry) == Hop_ObjChild0(pGhost) && 
-             Hop_ObjChild1(pEntry) == Hop_ObjChild1(pGhost) && 
-             Hop_ObjType(pEntry) == Hop_ObjType(pGhost) )
-            return pEntry;
-    }
-    return NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds the new node to the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_TableInsert( Hop_Man_t * p, Hop_Obj_t * pObj )
-{
-    Hop_Obj_t ** ppPlace;
-    assert( !Hop_IsComplement(pObj) );
-    assert( Hop_TableLookup(p, pObj) == NULL );
-    if ( (pObj->Id & 0xFF) == 0 && 2 * p->nTableSize < Hop_ManNodeNum(p) )
-        Hop_TableResize( p );
-    ppPlace = Hop_TableFind( p, pObj );
-    assert( *ppPlace == NULL );
-    *ppPlace = pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the node from the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_TableDelete( Hop_Man_t * p, Hop_Obj_t * pObj )
-{
-    Hop_Obj_t ** ppPlace;
-    assert( !Hop_IsComplement(pObj) );
-    ppPlace = Hop_TableFind( p, pObj );
-    assert( *ppPlace == pObj ); // node should be in the table
-    // remove the node
-    *ppPlace = pObj->pNext;
-    pObj->pNext = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Count the number of nodes in the table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_TableCountEntries( Hop_Man_t * p )
-{
-    Hop_Obj_t * pEntry;
-    int i, Counter = 0;
-    for ( i = 0; i < p->nTableSize; i++ )
-        for ( pEntry = p->pTable[i]; pEntry; pEntry = pEntry->pNext )
-            Counter++;
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Resizes the table.]
-
-  Description [Typically this procedure should not be called.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_TableResize( Hop_Man_t * p )
-{
-    Hop_Obj_t * pEntry, * pNext;
-    Hop_Obj_t ** pTableOld, ** ppPlace;
-    int nTableSizeOld, Counter, nEntries, i, clk;
-clk = clock();
-    // save the old table
-    pTableOld = p->pTable;
-    nTableSizeOld = p->nTableSize;
-    // get the new table
-    p->nTableSize = Cudd_PrimeAig( 2 * Hop_ManNodeNum(p) ); 
-    p->pTable = ALLOC( Hop_Obj_t *, p->nTableSize );
-    memset( p->pTable, 0, sizeof(Hop_Obj_t *) * p->nTableSize );
-    // rehash the entries from the old table
-    Counter = 0;
-    for ( i = 0; i < nTableSizeOld; i++ )
-    for ( pEntry = pTableOld[i], pNext = pEntry? pEntry->pNext : NULL; pEntry; pEntry = pNext, pNext = pEntry? pEntry->pNext : NULL )
-    {
-        // get the place where this entry goes in the table 
-        ppPlace = Hop_TableFind( p, pEntry );
-        assert( *ppPlace == NULL ); // should not be there
-        // add the entry to the list
-        *ppPlace = pEntry;
-        pEntry->pNext = NULL;
-        Counter++;
-    }
-    nEntries = Hop_ManNodeNum(p);
-    assert( Counter == nEntries );
-//    printf( "Increasing the structural table size from %6d to %6d. ", nTableSizeOld, p->nTableSize );
-//    PRT( "Time", clock() - clk );
-    // replace the table and the parameters
-    free( pTableOld );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Profiles the hash table.]
-
-  Description []
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Hop_TableProfile( Hop_Man_t * p )
-{
-    Hop_Obj_t * pEntry;
-    int i, Counter;
-    for ( i = 0; i < p->nTableSize; i++ )
-    {
-        Counter = 0;
-        for ( pEntry = p->pTable[i]; pEntry; pEntry = pEntry->pNext )
-            Counter++;
-        if ( Counter ) 
-            printf( "%d ", Counter );
-    }
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Returns the next prime &gt;= p.]
-
-  Description [Copied from CUDD, for stand-aloneness.]
-
-  SideEffects [None]
-
-  SeeAlso     []
-
-******************************************************************************/
-unsigned int Cudd_PrimeAig( unsigned int  p)
-{
-    int i,pn;
-    p--;
-    do {
-        p++;
-        if (p&1) {
-        pn = 1;
-        i = 3;
-        while ((unsigned) (i * i) <= p) {
-        if (p % i == 0) {
-            pn = 0;
-            break;
-        }
-        i += 2;
-        }
-    } else {
-        pn = 0;
-    }
-    } while (!pn);
-    return(p);
-
-} /* end of Cudd_Prime */
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/hopUtil.c b/src/aig/hop/hopUtil.c
deleted file mode 100644
index 87fdb15e..00000000
--- a/src/aig/hop/hopUtil.c
+++ /dev/null
@@ -1,572 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [hopUtil.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Various procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: hopUtil.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Increments the current traversal ID of the network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManIncrementTravId( Hop_Man_t * p )
-{
-    if ( p->nTravIds >= (1<<30)-1 )
-        Hop_ManCleanData( p );
-    p->nTravIds++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Cleans the data pointers for the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManCleanData( Hop_Man_t * p )
-{
-    Hop_Obj_t * pObj;
-    int i;
-    p->nTravIds = 1;
-    Hop_ManConst1(p)->pData = NULL;
-    Hop_ManForEachPi( p, pObj, i )
-        pObj->pData = NULL;
-    Hop_ManForEachPo( p, pObj, i )
-        pObj->pData = NULL;
-    Hop_ManForEachNode( p, pObj, i )
-        pObj->pData = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recursively cleans the data pointers in the cone of the node.]
-
-  Description [Applicable to small AIGs only because no caching is performed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjCleanData_rec( Hop_Obj_t * pObj )
-{
-    assert( !Hop_IsComplement(pObj) );
-    assert( !Hop_ObjIsPo(pObj) );
-    if ( Hop_ObjIsAnd(pObj) )
-    {
-        Hop_ObjCleanData_rec( Hop_ObjFanin0(pObj) );
-        Hop_ObjCleanData_rec( Hop_ObjFanin1(pObj) );
-    }
-    pObj->pData = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Detects multi-input gate rooted at this node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjCollectMulti_rec( Hop_Obj_t * pRoot, Hop_Obj_t * pObj, Vec_Ptr_t * vSuper )
-{
-    if ( pRoot != pObj && (Hop_IsComplement(pObj) || Hop_ObjIsPi(pObj) || Hop_ObjType(pRoot) != Hop_ObjType(pObj)) )
-    {
-        Vec_PtrPushUnique(vSuper, pObj);
-        return;
-    }
-    Hop_ObjCollectMulti_rec( pRoot, Hop_ObjChild0(pObj), vSuper );
-    Hop_ObjCollectMulti_rec( pRoot, Hop_ObjChild1(pObj), vSuper );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Detects multi-input gate rooted at this node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjCollectMulti( Hop_Obj_t * pRoot, Vec_Ptr_t * vSuper )
-{
-    assert( !Hop_IsComplement(pRoot) );
-    Vec_PtrClear( vSuper );
-    Hop_ObjCollectMulti_rec( pRoot, pRoot, vSuper );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the node is the root of MUX or EXOR/NEXOR.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_ObjIsMuxType( Hop_Obj_t * pNode )
-{
-    Hop_Obj_t * pNode0, * pNode1;
-    // check that the node is regular
-    assert( !Hop_IsComplement(pNode) );
-    // if the node is not AND, this is not MUX
-    if ( !Hop_ObjIsAnd(pNode) )
-        return 0;
-    // if the children are not complemented, this is not MUX
-    if ( !Hop_ObjFaninC0(pNode) || !Hop_ObjFaninC1(pNode) )
-        return 0;
-    // get children
-    pNode0 = Hop_ObjFanin0(pNode);
-    pNode1 = Hop_ObjFanin1(pNode);
-    // if the children are not ANDs, this is not MUX
-    if ( !Hop_ObjIsAnd(pNode0) || !Hop_ObjIsAnd(pNode1) )
-        return 0;
-    // otherwise the node is MUX iff it has a pair of equal grandchildren
-    return (Hop_ObjFanin0(pNode0) == Hop_ObjFanin0(pNode1) && (Hop_ObjFaninC0(pNode0) ^ Hop_ObjFaninC0(pNode1))) || 
-           (Hop_ObjFanin0(pNode0) == Hop_ObjFanin1(pNode1) && (Hop_ObjFaninC0(pNode0) ^ Hop_ObjFaninC1(pNode1))) ||
-           (Hop_ObjFanin1(pNode0) == Hop_ObjFanin0(pNode1) && (Hop_ObjFaninC1(pNode0) ^ Hop_ObjFaninC0(pNode1))) ||
-           (Hop_ObjFanin1(pNode0) == Hop_ObjFanin1(pNode1) && (Hop_ObjFaninC1(pNode0) ^ Hop_ObjFaninC1(pNode1)));
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Recognizes what nodes are inputs of the EXOR.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Hop_ObjRecognizeExor( Hop_Obj_t * pObj, Hop_Obj_t ** ppFan0, Hop_Obj_t ** ppFan1 )
-{
-    Hop_Obj_t * p0, * p1;
-    assert( !Hop_IsComplement(pObj) );
-    if ( !Hop_ObjIsNode(pObj) )
-        return 0;
-    if ( Hop_ObjIsExor(pObj) )
-    {
-        *ppFan0 = Hop_ObjChild0(pObj);
-        *ppFan1 = Hop_ObjChild1(pObj);
-        return 1;
-    }
-    assert( Hop_ObjIsAnd(pObj) );
-    p0 = Hop_ObjChild0(pObj);
-    p1 = Hop_ObjChild1(pObj);
-    if ( !Hop_IsComplement(p0) || !Hop_IsComplement(p1) )
-        return 0;
-    p0 = Hop_Regular(p0);
-    p1 = Hop_Regular(p1);
-    if ( !Hop_ObjIsAnd(p0) || !Hop_ObjIsAnd(p1) )
-        return 0;
-    if ( Hop_ObjFanin0(p0) != Hop_ObjFanin0(p1) || Hop_ObjFanin1(p0) != Hop_ObjFanin1(p1) )
-        return 0;
-    if ( Hop_ObjFaninC0(p0) == Hop_ObjFaninC0(p1) || Hop_ObjFaninC1(p0) == Hop_ObjFaninC1(p1) )
-        return 0;
-    *ppFan0 = Hop_ObjChild0(p0);
-    *ppFan1 = Hop_ObjChild1(p0);
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recognizes what nodes are control and data inputs of a MUX.]
-
-  Description [If the node is a MUX, returns the control variable C.
-  Assigns nodes T and E to be the then and else variables of the MUX. 
-  Node C is never complemented. Nodes T and E can be complemented.
-  This function also recognizes EXOR/NEXOR gates as MUXes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Hop_ObjRecognizeMux( Hop_Obj_t * pNode, Hop_Obj_t ** ppNodeT, Hop_Obj_t ** ppNodeE )
-{
-    Hop_Obj_t * pNode0, * pNode1;
-    assert( !Hop_IsComplement(pNode) );
-    assert( Hop_ObjIsMuxType(pNode) );
-    // get children
-    pNode0 = Hop_ObjFanin0(pNode);
-    pNode1 = Hop_ObjFanin1(pNode);
-
-    // find the control variable
-    if ( Hop_ObjFanin1(pNode0) == Hop_ObjFanin1(pNode1) && (Hop_ObjFaninC1(pNode0) ^ Hop_ObjFaninC1(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p2) )
-        if ( Hop_ObjFaninC1(pNode0) )
-        { // pNode2->p2 is positive phase of C
-            *ppNodeT = Hop_Not(Hop_ObjChild0(pNode1));//pNode2->p1);
-            *ppNodeE = Hop_Not(Hop_ObjChild0(pNode0));//pNode1->p1);
-            return Hop_ObjChild1(pNode1);//pNode2->p2;
-        }
-        else
-        { // pNode1->p2 is positive phase of C
-            *ppNodeT = Hop_Not(Hop_ObjChild0(pNode0));//pNode1->p1);
-            *ppNodeE = Hop_Not(Hop_ObjChild0(pNode1));//pNode2->p1);
-            return Hop_ObjChild1(pNode0);//pNode1->p2;
-        }
-    }
-    else if ( Hop_ObjFanin0(pNode0) == Hop_ObjFanin0(pNode1) && (Hop_ObjFaninC0(pNode0) ^ Hop_ObjFaninC0(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p1) )
-        if ( Hop_ObjFaninC0(pNode0) )
-        { // pNode2->p1 is positive phase of C
-            *ppNodeT = Hop_Not(Hop_ObjChild1(pNode1));//pNode2->p2);
-            *ppNodeE = Hop_Not(Hop_ObjChild1(pNode0));//pNode1->p2);
-            return Hop_ObjChild0(pNode1);//pNode2->p1;
-        }
-        else
-        { // pNode1->p1 is positive phase of C
-            *ppNodeT = Hop_Not(Hop_ObjChild1(pNode0));//pNode1->p2);
-            *ppNodeE = Hop_Not(Hop_ObjChild1(pNode1));//pNode2->p2);
-            return Hop_ObjChild0(pNode0);//pNode1->p1;
-        }
-    }
-    else if ( Hop_ObjFanin0(pNode0) == Hop_ObjFanin1(pNode1) && (Hop_ObjFaninC0(pNode0) ^ Hop_ObjFaninC1(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p1) )
-        if ( Hop_ObjFaninC0(pNode0) )
-        { // pNode2->p2 is positive phase of C
-            *ppNodeT = Hop_Not(Hop_ObjChild0(pNode1));//pNode2->p1);
-            *ppNodeE = Hop_Not(Hop_ObjChild1(pNode0));//pNode1->p2);
-            return Hop_ObjChild1(pNode1);//pNode2->p2;
-        }
-        else
-        { // pNode1->p1 is positive phase of C
-            *ppNodeT = Hop_Not(Hop_ObjChild1(pNode0));//pNode1->p2);
-            *ppNodeE = Hop_Not(Hop_ObjChild0(pNode1));//pNode2->p1);
-            return Hop_ObjChild0(pNode0);//pNode1->p1;
-        }
-    }
-    else if ( Hop_ObjFanin1(pNode0) == Hop_ObjFanin0(pNode1) && (Hop_ObjFaninC1(pNode0) ^ Hop_ObjFaninC0(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p2) )
-        if ( Hop_ObjFaninC1(pNode0) )
-        { // pNode2->p1 is positive phase of C
-            *ppNodeT = Hop_Not(Hop_ObjChild1(pNode1));//pNode2->p2);
-            *ppNodeE = Hop_Not(Hop_ObjChild0(pNode0));//pNode1->p1);
-            return Hop_ObjChild0(pNode1);//pNode2->p1;
-        }
-        else
-        { // pNode1->p2 is positive phase of C
-            *ppNodeT = Hop_Not(Hop_ObjChild0(pNode0));//pNode1->p1);
-            *ppNodeE = Hop_Not(Hop_ObjChild1(pNode1));//pNode2->p2);
-            return Hop_ObjChild1(pNode0);//pNode1->p2;
-        }
-    }
-    assert( 0 ); // this is not MUX
-    return NULL;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Prints Eqn formula for the AIG rooted at this node.]
-
-  Description [The formula is in terms of PIs, which should have
-  their names assigned in pObj->pData fields.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjPrintEqn( FILE * pFile, Hop_Obj_t * pObj, Vec_Vec_t * vLevels, int Level )
-{
-    Vec_Ptr_t * vSuper;
-    Hop_Obj_t * pFanin;
-    int fCompl, i;
-    // store the complemented attribute
-    fCompl = Hop_IsComplement(pObj);
-    pObj = Hop_Regular(pObj);
-    // constant case
-    if ( Hop_ObjIsConst1(pObj) )
-    {
-        fprintf( pFile, "%d", !fCompl );
-        return;
-    }
-    // PI case
-    if ( Hop_ObjIsPi(pObj) )
-    {
-        fprintf( pFile, "%s%s", fCompl? "!" : "", pObj->pData );
-        return;
-    }
-    // AND case
-    Vec_VecExpand( vLevels, Level );
-    vSuper = Vec_VecEntry(vLevels, Level);
-    Hop_ObjCollectMulti( pObj, vSuper );
-    fprintf( pFile, "%s", (Level==0? "" : "(") );
-    Vec_PtrForEachEntry( vSuper, pFanin, i )
-    {
-        Hop_ObjPrintEqn( pFile, Hop_NotCond(pFanin, fCompl), vLevels, Level+1 );
-        if ( i < Vec_PtrSize(vSuper) - 1 )
-            fprintf( pFile, " %s ", fCompl? "+" : "*" );
-    }
-    fprintf( pFile, "%s", (Level==0? "" : ")") );
-    return;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints Verilog formula for the AIG rooted at this node.]
-
-  Description [The formula is in terms of PIs, which should have
-  their names assigned in pObj->pData fields.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjPrintVerilog( FILE * pFile, Hop_Obj_t * pObj, Vec_Vec_t * vLevels, int Level )
-{
-    Vec_Ptr_t * vSuper;
-    Hop_Obj_t * pFanin, * pFanin0, * pFanin1, * pFaninC;
-    int fCompl, i;
-    // store the complemented attribute
-    fCompl = Hop_IsComplement(pObj);
-    pObj = Hop_Regular(pObj);
-    // constant case
-    if ( Hop_ObjIsConst1(pObj) )
-    {
-        fprintf( pFile, "1\'b%d", !fCompl );
-        return;
-    }
-    // PI case
-    if ( Hop_ObjIsPi(pObj) )
-    {
-        fprintf( pFile, "%s%s", fCompl? "~" : "", pObj->pData );
-        return;
-    }
-    // EXOR case
-    if ( Hop_ObjIsExor(pObj) )
-    {
-        Vec_VecExpand( vLevels, Level );
-        vSuper = Vec_VecEntry( vLevels, Level );
-        Hop_ObjCollectMulti( pObj, vSuper );
-        fprintf( pFile, "%s", (Level==0? "" : "(") );
-        Vec_PtrForEachEntry( vSuper, pFanin, i )
-        {
-            Hop_ObjPrintVerilog( pFile, Hop_NotCond(pFanin, (fCompl && i==0)), vLevels, Level+1 );
-            if ( i < Vec_PtrSize(vSuper) - 1 )
-                fprintf( pFile, " ^ " );
-        }
-        fprintf( pFile, "%s", (Level==0? "" : ")") );
-        return;
-    }
-    // MUX case
-    if ( Hop_ObjIsMuxType(pObj) )
-    {
-        if ( Hop_ObjRecognizeExor( pObj, &pFanin0, &pFanin1 ) )
-        {
-            fprintf( pFile, "%s", (Level==0? "" : "(") );
-            Hop_ObjPrintVerilog( pFile, Hop_NotCond(pFanin0, fCompl), vLevels, Level+1 );
-            fprintf( pFile, " ^ " );
-            Hop_ObjPrintVerilog( pFile, pFanin1, vLevels, Level+1 );
-            fprintf( pFile, "%s", (Level==0? "" : ")") );
-        }
-        else 
-        {
-            pFaninC = Hop_ObjRecognizeMux( pObj, &pFanin1, &pFanin0 );
-            fprintf( pFile, "%s", (Level==0? "" : "(") );
-            Hop_ObjPrintVerilog( pFile, pFaninC, vLevels, Level+1 );
-            fprintf( pFile, " ? " );
-            Hop_ObjPrintVerilog( pFile, Hop_NotCond(pFanin1, fCompl), vLevels, Level+1 );
-            fprintf( pFile, " : " );
-            Hop_ObjPrintVerilog( pFile, Hop_NotCond(pFanin0, fCompl), vLevels, Level+1 );
-            fprintf( pFile, "%s", (Level==0? "" : ")") );
-        }
-        return;
-    }
-    // AND case
-    Vec_VecExpand( vLevels, Level );
-    vSuper = Vec_VecEntry(vLevels, Level);
-    Hop_ObjCollectMulti( pObj, vSuper );
-    fprintf( pFile, "%s", (Level==0? "" : "(") );
-    Vec_PtrForEachEntry( vSuper, pFanin, i )
-    {
-        Hop_ObjPrintVerilog( pFile, Hop_NotCond(pFanin, fCompl), vLevels, Level+1 );
-        if ( i < Vec_PtrSize(vSuper) - 1 )
-            fprintf( pFile, " %s ", fCompl? "|" : "&" );
-    }
-    fprintf( pFile, "%s", (Level==0? "" : ")") );
-    return;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Prints node in HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ObjPrintVerbose( Hop_Obj_t * pObj, int fHaig )
-{
-    assert( !Hop_IsComplement(pObj) );
-    printf( "Node %p : ", pObj );
-    if ( Hop_ObjIsConst1(pObj) )
-        printf( "constant 1" );
-    else if ( Hop_ObjIsPi(pObj) )
-        printf( "PI" );
-    else
-        printf( "AND( %p%s, %p%s )", 
-            Hop_ObjFanin0(pObj), (Hop_ObjFaninC0(pObj)? "\'" : " "), 
-            Hop_ObjFanin1(pObj), (Hop_ObjFaninC1(pObj)? "\'" : " ") );
-    printf( " (refs = %3d)", Hop_ObjRefs(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints node in HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManPrintVerbose( Hop_Man_t * p, int fHaig )
-{
-    Vec_Ptr_t * vNodes;
-    Hop_Obj_t * pObj;
-    int i;
-    printf( "PIs: " );
-    Hop_ManForEachPi( p, pObj, i )
-        printf( " %p", pObj );
-    printf( "\n" );
-    vNodes = Hop_ManDfs( p );
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Hop_ObjPrintVerbose( pObj, fHaig ), printf( "\n" );
-    printf( "\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the AIG into the BLIF file.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Hop_ManDumpBlif( Hop_Man_t * p, char * pFileName )
-{
-    FILE * pFile;
-    Vec_Ptr_t * vNodes;
-    Hop_Obj_t * pObj, * pConst1 = NULL;
-    int i, nDigits, Counter = 0;
-    if ( Hop_ManPoNum(p) == 0 )
-    {
-        printf( "Hop_ManDumpBlif(): AIG manager does not have POs.\n" );
-        return;
-    }
-    // collect nodes in the DFS order
-    vNodes = Hop_ManDfs( p );
-    // assign IDs to objects
-    Hop_ManConst1(p)->pData = (void *)Counter++;
-    Hop_ManForEachPi( p, pObj, i )
-        pObj->pData = (void *)Counter++;
-    Hop_ManForEachPo( p, pObj, i )
-        pObj->pData = (void *)Counter++;
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        pObj->pData = (void *)Counter++;
-    nDigits = Hop_Base10Log( Counter );
-    // write the file
-    pFile = fopen( pFileName, "w" );
-    fprintf( pFile, "# BLIF file written by procedure Hop_ManDumpBlif() in ABC\n" );
-    fprintf( pFile, "# http://www.eecs.berkeley.edu/~alanmi/abc/\n" );
-    fprintf( pFile, ".model test\n" );
-    // write PIs
-    fprintf( pFile, ".inputs" );
-    Hop_ManForEachPi( p, pObj, i )
-        fprintf( pFile, " n%0*d", nDigits, (int)pObj->pData );
-    fprintf( pFile, "\n" );
-    // write POs
-    fprintf( pFile, ".outputs" );
-    Hop_ManForEachPo( p, pObj, i )
-        fprintf( pFile, " n%0*d", nDigits, (int)pObj->pData );
-    fprintf( pFile, "\n" );
-    // write nodes
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-    {
-        fprintf( pFile, ".names n%0*d n%0*d n%0*d\n", 
-            nDigits, (int)Hop_ObjFanin0(pObj)->pData, 
-            nDigits, (int)Hop_ObjFanin1(pObj)->pData, 
-            nDigits, (int)pObj->pData );
-        fprintf( pFile, "%d%d 1\n", !Hop_ObjFaninC0(pObj), !Hop_ObjFaninC1(pObj) );
-    }
-    // write POs
-    Hop_ManForEachPo( p, pObj, i )
-    {
-        fprintf( pFile, ".names n%0*d n%0*d\n", 
-            nDigits, (int)Hop_ObjFanin0(pObj)->pData, 
-            nDigits, (int)pObj->pData );
-        fprintf( pFile, "%d 1\n", !Hop_ObjFaninC0(pObj) );
-        if ( Hop_ObjIsConst1(Hop_ObjFanin0(pObj)) )
-            pConst1 = Hop_ManConst1(p);
-    }
-    if ( pConst1 )
-        fprintf( pFile, ".names n%0*d\n 1\n", nDigits, (int)pConst1->pData );
-    fprintf( pFile, ".end\n\n" );
-    fclose( pFile );
-    Vec_PtrFree( vNodes );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/hop_.c b/src/aig/hop/hop_.c
deleted file mode 100644
index 468413fa..00000000
--- a/src/aig/hop/hop_.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivy_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Minimalistic And-Inverter Graph package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivy_.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/hop/module.make b/src/aig/hop/module.make
deleted file mode 100644
index b06d91fd..00000000
--- a/src/aig/hop/module.make
+++ /dev/null
@@ -1,9 +0,0 @@
-SRC +=    src/aig/hop/hopBalance.c \
-    src/aig/hop/hopCheck.c \
-    src/aig/hop/hopDfs.c \
-    src/aig/hop/hopMan.c \
-    src/aig/hop/hopMem.c \
-    src/aig/hop/hopObj.c \
-    src/aig/hop/hopOper.c \
-    src/aig/hop/hopTable.c \
-    src/aig/hop/hopUtil.c 
diff --git a/src/aig/ioa/ioa.h b/src/aig/ioa/ioa.h
deleted file mode 100644
index 3458d12e..00000000
--- a/src/aig/ioa/ioa.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ioa.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [AIG package.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - April 28, 2007.]
-
-  Revision    [$Id: ioa.h,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __IOA_H__
-#define __IOA_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-
-#include "vec.h"
-#include "bar.h"
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                             ITERATORS                            ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== ioaReadAig.c ========================================================*/
-extern Aig_Man_t *    Ioa_ReadAiger( char * pFileName, int fCheck );
-/*=== ioaWriteAig.c =======================================================*/
-extern void           Ioa_WriteAiger( Aig_Man_t * pMan, char * pFileName, int fWriteSymbols );
-/*=== ioaUtil.c =======================================================*/
-extern int            Ioa_FileSize( char * pFileName );
-extern char *         Ioa_FileNameGeneric( char * FileName );
-extern char *         Ioa_TimeStamp();
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/ioa/ioaReadAig.c b/src/aig/ioa/ioaReadAig.c
deleted file mode 100644
index 937e446f..00000000
--- a/src/aig/ioa/ioaReadAig.c
+++ /dev/null
@@ -1,312 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ioaReadAiger.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Command processing package.]
-
-  Synopsis    [Procedures to read binary AIGER format developed by
-  Armin Biere, Johannes Kepler University (http://fmv.jku.at/)]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - December 16, 2006.]
-
-  Revision    [$Id: ioaReadAiger.c,v 1.00 2006/12/16 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ioa.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-unsigned Ioa_ReadAigerDecode( char ** ppPos );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Reads the AIG in the binary AIGER format.]
-
-  Description []
-  
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Man_t * Ioa_ReadAiger( char * pFileName, int fCheck )
-{
-    Bar_Progress_t * pProgress;
-    FILE * pFile;
-    Vec_Ptr_t * vNodes, * vDrivers;//, * vTerms;
-    Aig_Obj_t * pObj, * pNode0, * pNode1;
-    Aig_Man_t * pManNew;
-    int nTotal, nInputs, nOutputs, nLatches, nAnds, nFileSize, i;//, iTerm, nDigits;
-    char * pContents, * pDrivers, * pSymbols, * pCur, * pName;//, * pType;
-    unsigned uLit0, uLit1, uLit;
-
-    // read the file into the buffer
-    nFileSize = Ioa_FileSize( pFileName );
-    pFile = fopen( pFileName, "rb" );
-    pContents = ALLOC( char, nFileSize );
-    fread( pContents, nFileSize, 1, pFile );
-    fclose( pFile );
-
-    // check if the input file format is correct
-    if ( strncmp(pContents, "aig", 3) != 0 )
-    {
-        fprintf( stdout, "Wrong input file format.\n" );
-        return NULL;
-    }
-
-    // read the file type
-    pCur = pContents;         while ( *pCur++ != ' ' );
-    // read the number of objects
-    nTotal = atoi( pCur );    while ( *pCur++ != ' ' );
-    // read the number of inputs
-    nInputs = atoi( pCur );   while ( *pCur++ != ' ' );
-    // read the number of latches
-    nLatches = atoi( pCur );  while ( *pCur++ != ' ' );
-    // read the number of outputs
-    nOutputs = atoi( pCur );  while ( *pCur++ != ' ' );
-    // read the number of nodes
-    nAnds = atoi( pCur );     while ( *pCur++ != '\n' );  
-    // check the parameters
-    if ( nTotal != nInputs + nLatches + nAnds )
-    {
-        fprintf( stdout, "The paramters are wrong.\n" );
-        return NULL;
-    }
-
-    // allocate the empty AIG
-    pManNew = Aig_ManStart( nAnds );
-    pName = Ioa_FileNameGeneric( pFileName );
-    pManNew->pName = Aig_UtilStrsav( pName );
-//    pManNew->pSpec = Ioa_UtilStrsav( pFileName );
-    free( pName );
-
-    // prepare the array of nodes
-    vNodes = Vec_PtrAlloc( 1 + nInputs + nLatches + nAnds );
-    Vec_PtrPush( vNodes, Aig_ManConst0(pManNew) );
-
-    // create the PIs
-    for ( i = 0; i < nInputs + nLatches; i++ )
-    {
-        pObj = Aig_ObjCreatePi(pManNew);    
-        Vec_PtrPush( vNodes, pObj );
-    }
-/*
-    // create the POs
-    for ( i = 0; i < nOutputs + nLatches; i++ )
-    {
-        pObj = Aig_ObjCreatePo(pManNew);   
-    }
-*/
-    // create the latches
-    pManNew->nRegs = nLatches;
-/*
-    nDigits = Ioa_Base10Log( nLatches );
-    for ( i = 0; i < nLatches; i++ )
-    {
-        pObj = Aig_ObjCreateLatch(pManNew);
-        Aig_LatchSetInit0( pObj );
-        pNode0 = Aig_ObjCreateBi(pManNew);
-        pNode1 = Aig_ObjCreateBo(pManNew);
-        Aig_ObjAddFanin( pObj, pNode0 );
-        Aig_ObjAddFanin( pNode1, pObj );
-        Vec_PtrPush( vNodes, pNode1 );
-        // assign names to latch and its input
-//        Aig_ObjAssignName( pObj, Aig_ObjNameDummy("_L", i, nDigits), NULL );
-//        printf( "Creating latch %s with input %d and output %d.\n", Aig_ObjName(pObj), pNode0->Id, pNode1->Id );
-    } 
-*/
-    
-    // remember the beginning of latch/PO literals
-    pDrivers = pCur;
-
-    // scroll to the beginning of the binary data
-    for ( i = 0; i < nLatches + nOutputs; )
-        if ( *pCur++ == '\n' )
-            i++;
-
-    // create the AND gates
-    pProgress = Bar_ProgressStart( stdout, nAnds );
-    for ( i = 0; i < nAnds; i++ )
-    {
-        Bar_ProgressUpdate( pProgress, i, NULL );
-        uLit = ((i + 1 + nInputs + nLatches) << 1);
-        uLit1 = uLit  - Ioa_ReadAigerDecode( &pCur );
-        uLit0 = uLit1 - Ioa_ReadAigerDecode( &pCur );
-//        assert( uLit1 > uLit0 );
-        pNode0 = Aig_NotCond( Vec_PtrEntry(vNodes, uLit0 >> 1), uLit0 & 1 );
-        pNode1 = Aig_NotCond( Vec_PtrEntry(vNodes, uLit1 >> 1), uLit1 & 1 );
-        assert( Vec_PtrSize(vNodes) == i + 1 + nInputs + nLatches );
-        Vec_PtrPush( vNodes, Aig_And(pManNew, pNode0, pNode1) );
-    }
-    Bar_ProgressStop( pProgress );
-
-    // remember the place where symbols begin
-    pSymbols = pCur;
-
-    // read the latch driver literals
-    vDrivers = Vec_PtrAlloc( nLatches + nOutputs );
-    pCur = pDrivers;
-//    Aig_ManForEachLatchInput( pManNew, pObj, i )
-    for ( i = 0; i < nLatches; i++ )
-    {
-        uLit0 = atoi( pCur );  while ( *pCur++ != '\n' );
-        pNode0 = Aig_NotCond( Vec_PtrEntry(vNodes, uLit0 >> 1), (uLit0 & 1) );//^ (uLit0 < 2) );
-//        Aig_ObjAddFanin( pObj, pNode0 );
-        Vec_PtrPush( vDrivers, pNode0 );
-    }
-    // read the PO driver literals
-//    Aig_ManForEachPo( pManNew, pObj, i )
-    for ( i = 0; i < nOutputs; i++ )
-    {
-        uLit0 = atoi( pCur );  while ( *pCur++ != '\n' );
-        pNode0 = Aig_NotCond( Vec_PtrEntry(vNodes, uLit0 >> 1), (uLit0 & 1) );//^ (uLit0 < 2) );
-//        Aig_ObjAddFanin( pObj, pNode0 );
-        Vec_PtrPush( vDrivers, pNode0 );
-    }
-
-
-    // create the POs
-    for ( i = 0; i < nOutputs; i++ )
-        Aig_ObjCreatePo( pManNew, Vec_PtrEntry(vDrivers, nLatches + i) );
-    for ( i = 0; i < nLatches; i++ )
-        Aig_ObjCreatePo( pManNew, Vec_PtrEntry(vDrivers, i) );
-    Vec_PtrFree( vDrivers );
-
-/*
-    // read the names if present
-    pCur = pSymbols;
-    if ( *pCur != 'c' )
-    {
-        int Counter = 0;
-        while ( pCur < pContents + nFileSize && *pCur != 'c' )
-        {
-            // get the terminal type
-            pType = pCur;
-            if ( *pCur == 'i' )
-                vTerms = pManNew->vPis;
-            else if ( *pCur == 'l' )
-                vTerms = pManNew->vBoxes;
-            else if ( *pCur == 'o' )
-                vTerms = pManNew->vPos;
-            else
-            {
-                fprintf( stdout, "Wrong terminal type.\n" );
-                return NULL;
-            }
-            // get the terminal number
-            iTerm = atoi( ++pCur );  while ( *pCur++ != ' ' );
-            // get the node
-            if ( iTerm >= Vec_PtrSize(vTerms) )
-            {
-                fprintf( stdout, "The number of terminal is out of bound.\n" );
-                return NULL;
-            }
-            pObj = Vec_PtrEntry( vTerms, iTerm );
-            if ( *pType == 'l' )
-                pObj = Aig_ObjFanout0(pObj);
-            // assign the name
-            pName = pCur;          while ( *pCur++ != '\n' );
-            // assign this name 
-            *(pCur-1) = 0;
-            Aig_ObjAssignName( pObj, pName, NULL );
-            if ( *pType == 'l' )
-            {
-                Aig_ObjAssignName( Aig_ObjFanin0(pObj), Aig_ObjName(pObj), "L" );
-                Aig_ObjAssignName( Aig_ObjFanin0(Aig_ObjFanin0(pObj)), Aig_ObjName(pObj), "_in" );
-            }
-            // mark the node as named
-            pObj->pCopy = (Aig_Obj_t *)Aig_ObjName(pObj);
-        } 
-
-        // assign the remaining names
-        Aig_ManForEachPi( pManNew, pObj, i )
-        {
-            if ( pObj->pCopy ) continue;
-            Aig_ObjAssignName( pObj, Aig_ObjName(pObj), NULL );
-            Counter++;
-        }
-        Aig_ManForEachLatchOutput( pManNew, pObj, i )
-        {
-            if ( pObj->pCopy ) continue;
-            Aig_ObjAssignName( pObj, Aig_ObjName(pObj), NULL );
-            Aig_ObjAssignName( Aig_ObjFanin0(pObj), Aig_ObjName(pObj), "L" );
-            Aig_ObjAssignName( Aig_ObjFanin0(Aig_ObjFanin0(pObj)), Aig_ObjName(pObj), "_in" );
-            Counter++;
-        }
-        Aig_ManForEachPo( pManNew, pObj, i )
-        {
-            if ( pObj->pCopy ) continue;
-            Aig_ObjAssignName( pObj, Aig_ObjName(pObj), NULL );
-            Counter++;
-        }
-        if ( Counter )
-            printf( "Ioa_ReadAiger(): Added %d default names for nameless I/O/register objects.\n", Counter );
-    }
-    else
-    {
-//        printf( "Ioa_ReadAiger(): I/O/register names are not given. Generating short names.\n" );
-        Aig_ManShortNames( pManNew );
-    }
-*/
-
-    // skipping the comments
-    free( pContents );
-    Vec_PtrFree( vNodes );
-
-    // remove the extra nodes
-    Aig_ManCleanup( pManNew );
-
-    // check the result
-    if ( fCheck && !Aig_ManCheck( pManNew ) )
-    {
-        printf( "Ioa_ReadAiger: The network check has failed.\n" );
-        Aig_ManStop( pManNew );
-        return NULL;
-    }
-    return pManNew;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Extracts one unsigned AIG edge from the input buffer.]
-
-  Description [This procedure is a slightly modified version of Armin Biere's
-  procedure "unsigned decode (FILE * file)". ]
-  
-  SideEffects [Updates the current reading position.]
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Ioa_ReadAigerDecode( char ** ppPos )
-{
-    unsigned x = 0, i = 0;
-    unsigned char ch;
-
-//    while ((ch = getnoneofch (file)) & 0x80)
-    while ((ch = *(*ppPos)++) & 0x80)
-        x |= (ch & 0x7f) << (7 * i++);
-
-    return x | (ch << (7 * i));
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ioa/ioaUtil.c b/src/aig/ioa/ioaUtil.c
deleted file mode 100644
index 79dcca1e..00000000
--- a/src/aig/ioa/ioaUtil.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ioaUtil.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Command processing package.]
-
-  Synopsis    [Procedures to read binary AIGER format developed by
-  Armin Biere, Johannes Kepler University (http://fmv.jku.at/)]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - December 16, 2006.]
-
-  Revision    [$Id: ioaUtil.c,v 1.00 2006/12/16 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ioa.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the file size.]
-
-  Description [The file should be closed.]
-
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ioa_FileSize( char * pFileName )
-{
-    FILE * pFile;
-    int nFileSize;
-    pFile = fopen( pFileName, "r" );
-    if ( pFile == NULL )
-    {
-        printf( "Ioa_FileSize(): The file is unavailable (absent or open).\n" );
-        return 0;
-    }
-    fseek( pFile, 0, SEEK_END );  
-    nFileSize = ftell( pFile ); 
-    fclose( pFile );
-    return nFileSize;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Ioa_FileNameGeneric( char * FileName )
-{
-    char * pDot;
-    char * pUnd;
-    char * pRes;
-    
-    // find the generic name of the file
-    pRes = Aig_UtilStrsav( FileName );
-    // find the pointer to the "." symbol in the file name
-//  pUnd = strstr( FileName, "_" );
-    pUnd = NULL;
-    pDot = strstr( FileName, "." );
-    if ( pUnd )
-        pRes[pUnd - FileName] = 0;
-    else if ( pDot )
-        pRes[pDot - FileName] = 0;
-    return pRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the time stamp.]
-
-  Description [The file should be closed.]
-
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Ioa_TimeStamp()
-{
-    static char Buffer[100];
-    char * TimeStamp;
-    time_t ltime;
-    // get the current time
-    time( &ltime );
-    TimeStamp = asctime( localtime( &ltime ) );
-    TimeStamp[ strlen(TimeStamp) - 1 ] = 0;
-    strcpy( Buffer, TimeStamp );
-    return Buffer;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ioa/ioaWriteAig.c b/src/aig/ioa/ioaWriteAig.c
deleted file mode 100644
index a6c23fd4..00000000
--- a/src/aig/ioa/ioaWriteAig.c
+++ /dev/null
@@ -1,292 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ioaWriteAiger.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Command processing package.]
-
-  Synopsis    [Procedures to write binary AIGER format developed by
-  Armin Biere, Johannes Kepler University (http://fmv.jku.at/)]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - December 16, 2006.]
-
-  Revision    [$Id: ioaWriteAiger.c,v 1.00 2006/12/16 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ioa.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-/*
-    The following is taken from the AIGER format description, 
-    which can be found at http://fmv.jku.at/aiger
-*/
-
-
-/*
-         The AIGER And-Inverter Graph (AIG) Format Version 20061129
-         ----------------------------------------------------------
-              Armin Biere, Johannes Kepler University, 2006
-
-  This report describes the AIG file format as used by the AIGER library.
-  The purpose of this report is not only to motivate and document the
-  format, but also to allow independent implementations of writers and
-  readers by giving precise and unambiguous definitions.
-
-  ...
-
-Introduction
-
-  The name AIGER contains as one part the acronym AIG of And-Inverter
-  Graphs and also if pronounced in German sounds like the name of the
-  'Eiger', a mountain in the Swiss alps.  This choice should emphasize the
-  origin of this format. It was first openly discussed at the Alpine
-  Verification Meeting 2006 in Ascona as a way to provide a simple, compact
-  file format for a model checking competition affiliated to CAV 2007.
-
-  ...
-
-Binary Format Definition
-
-  The binary format is semantically a subset of the ASCII format with a
-  slightly different syntax.  The binary format may need to reencode
-  literals, but translating a file in binary format into ASCII format and
-  then back in to binary format will result in the same file.
-
-  The main differences of the binary format to the ASCII format are as
-  follows.  After the header the list of input literals and all the
-  current state literals of a latch can be omitted.  Furthermore the
-  definitions of the AND gates are binary encoded.  However, the symbol
-  table and the comment section are as in the ASCII format.
-
-  The header of an AIGER file in binary format has 'aig' as format
-  identifier, but otherwise is identical to the ASCII header.  The standard
-  file extension for the binary format is therefore '.aig'. 
-  
-  A header for the binary format is still in ASCII encoding:
-
-    aig M I L O A
-
-  Constants, variables and literals are handled in the same way as in the
-  ASCII format.  The first simplifying restriction is on the variable
-  indices of inputs and latches.  The variable indices of inputs come first,
-  followed by the pseudo-primary inputs of the latches and then the variable
-  indices of all LHS of AND gates:
-
-    input variable indices        1,          2,  ... ,  I
-    latch variable indices      I+1,        I+2,  ... ,  (I+L)
-    AND variable indices      I+L+1,      I+L+2,  ... ,  (I+L+A) == M
-
-  The corresponding unsigned literals are
-
-    input literals                2,          4,  ... ,  2*I
-    latch literals            2*I+2,      2*I+4,  ... ,  2*(I+L)
-    AND literals          2*(I+L)+2,  2*(I+L)+4,  ... ,  2*(I+L+A) == 2*M
-                    
-  All literals have to be defined, and therefore 'M = I + L + A'.  With this
-  restriction it becomes possible that the inputs and the current state
-  literals of the latches do not have to be listed explicitly.  Therefore,
-  after the header only the list of 'L' next state literals follows, one per
-  latch on a single line, and then the 'O' outputs, again one per line.
-
-  In the binary format we assume that the AND gates are ordered and respect
-  the child parent relation.  AND gates with smaller literals on the LHS
-  come first.  Therefore we can assume that the literals on the right-hand
-  side of a definition of an AND gate are smaller than the LHS literal.
-  Furthermore we can sort the literals on the RHS, such that the larger
-  literal comes first.  A definition thus consists of three literals
-    
-      lhs rhs0 rhs1
-
-  with 'lhs' even and 'lhs > rhs0 >= rhs1'.  Also the variable indices are
-  pairwise different to avoid combinational self loops.  Since the LHS
-  indices of the definitions are all consecutive (as even integers),
-  the binary format does not have to keep 'lhs'.  In addition, we can use
-  the order restriction and only write the differences 'delta0' and 'delta1'
-  instead of 'rhs0' and 'rhs1', with
-
-      delta0 = lhs - rhs0,  delta1 = rhs0 - rhs1
-  
-  The differences will all be strictly positive, and in practice often very
-  small.  We can take advantage of this fact by the simple little-endian
-  encoding of unsigned integers of the next section.  After the binary delta
-  encoding of the RHSs of all AND gates, the optional symbol table and
-  optional comment section start in the same format as in the ASCII case.
-
-  ...
-
-*/
-
-static unsigned Ioa_ObjMakeLit( int Var, int fCompl )                 { return (Var << 1) | fCompl;    }
-static unsigned Ioa_ObjAigerNum( Aig_Obj_t * pObj )                   { return (unsigned)pObj->pData;  }
-static void     Ioa_ObjSetAigerNum( Aig_Obj_t * pObj, unsigned Num )  { pObj->pData = (void *)Num;     }
-
-int      Ioa_WriteAigerEncode( char * pBuffer, int Pos, unsigned x );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the AIG in the binary AIGER format.]
-
-  Description []
-  
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ioa_WriteAiger( Aig_Man_t * pMan, char * pFileName, int fWriteSymbols )
-{
-    Bar_Progress_t * pProgress;
-    FILE * pFile;
-    Aig_Obj_t * pObj, * pDriver;
-    int i, nNodes, Pos, nBufferSize;
-    unsigned char * pBuffer;
-    unsigned uLit0, uLit1, uLit;
-
-//    assert( Aig_ManIsStrash(pMan) );
-    // start the output stream
-    pFile = fopen( pFileName, "wb" );
-    if ( pFile == NULL )
-    {
-        fprintf( stdout, "Ioa_WriteAiger(): Cannot open the output file \"%s\".\n", pFileName );
-        return;
-    }
-/*
-    Aig_ManForEachLatch( pMan, pObj, i )
-        if ( !Aig_LatchIsInit0(pObj) )
-        {
-            fprintf( stdout, "Ioa_WriteAiger(): Cannot write AIGER format with non-0 latch init values. Run \"zero\".\n" );
-            return;
-        }
-*/
-    // set the node numbers to be used in the output file
-    nNodes = 0;
-    Ioa_ObjSetAigerNum( Aig_ManConst1(pMan), nNodes++ );
-    Aig_ManForEachPi( pMan, pObj, i )
-        Ioa_ObjSetAigerNum( pObj, nNodes++ );
-    Aig_ManForEachNode( pMan, pObj, i )
-        Ioa_ObjSetAigerNum( pObj, nNodes++ );
-
-    // write the header "M I L O A" where M = I + L + A
-    fprintf( pFile, "aig %u %u %u %u %u\n", 
-        Aig_ManPiNum(pMan) + Aig_ManNodeNum(pMan), 
-        Aig_ManPiNum(pMan) - Aig_ManRegNum(pMan),
-        Aig_ManRegNum(pMan),
-        Aig_ManPoNum(pMan) - Aig_ManRegNum(pMan),
-        Aig_ManNodeNum(pMan) );
-
-    // if the driver node is a constant, we need to complement the literal below
-    // because, in the AIGER format, literal 0/1 is represented as number 0/1
-    // while, in ABC, constant 1 node has number 0 and so literal 0/1 will be 1/0
-
-    // write latch drivers
-    Aig_ManForEachLiSeq( pMan, pObj, i )
-    {
-        pDriver = Aig_ObjFanin0(pObj);
-        fprintf( pFile, "%u\n", Ioa_ObjMakeLit( Ioa_ObjAigerNum(pDriver), Aig_ObjFaninC0(pObj) ^ (Ioa_ObjAigerNum(pDriver) == 0) ) );
-    }
-
-    // write PO drivers
-    Aig_ManForEachPoSeq( pMan, pObj, i )
-    {
-        pDriver = Aig_ObjFanin0(pObj);
-        fprintf( pFile, "%u\n", Ioa_ObjMakeLit( Ioa_ObjAigerNum(pDriver), Aig_ObjFaninC0(pObj) ^ (Ioa_ObjAigerNum(pDriver) == 0) ) );
-    }
-
-    // write the nodes into the buffer
-    Pos = 0;
-    nBufferSize = 6 * Aig_ManNodeNum(pMan) + 100; // skeptically assuming 3 chars per one AIG edge
-    pBuffer = ALLOC( char, nBufferSize );
-    pProgress = Bar_ProgressStart( stdout, Aig_ManObjNumMax(pMan) );
-    Aig_ManForEachNode( pMan, pObj, i )
-    {
-        Bar_ProgressUpdate( pProgress, i, NULL );
-        uLit  = Ioa_ObjMakeLit( Ioa_ObjAigerNum(pObj), 0 );
-        uLit0 = Ioa_ObjMakeLit( Ioa_ObjAigerNum(Aig_ObjFanin0(pObj)), Aig_ObjFaninC0(pObj) );
-        uLit1 = Ioa_ObjMakeLit( Ioa_ObjAigerNum(Aig_ObjFanin1(pObj)), Aig_ObjFaninC1(pObj) );
-        assert( uLit0 < uLit1 );
-        Pos = Ioa_WriteAigerEncode( pBuffer, Pos, uLit  - uLit1 );
-        Pos = Ioa_WriteAigerEncode( pBuffer, Pos, uLit1 - uLit0 );
-        if ( Pos > nBufferSize - 10 )
-        {
-            printf( "Ioa_WriteAiger(): AIGER generation has failed because the allocated buffer is too small.\n" );
-            fclose( pFile );
-            return;
-        }
-    }
-    assert( Pos < nBufferSize );
-    Bar_ProgressStop( pProgress );
-
-    // write the buffer
-    fwrite( pBuffer, 1, Pos, pFile );
-    free( pBuffer );
-/*
-    // write the symbol table
-    if ( fWriteSymbols )
-    {
-        // write PIs
-        Aig_ManForEachPi( pMan, pObj, i )
-            fprintf( pFile, "i%d %s\n", i, Aig_ObjName(pObj) );
-        // write latches
-        Aig_ManForEachLatch( pMan, pObj, i )
-            fprintf( pFile, "l%d %s\n", i, Aig_ObjName(Aig_ObjFanout0(pObj)) );
-        // write POs
-        Aig_ManForEachPo( pMan, pObj, i )
-            fprintf( pFile, "o%d %s\n", i, Aig_ObjName(pObj) );
-    }
-*/
-    // write the comment
-    fprintf( pFile, "c\n" );
-    if ( pMan->pName )
-        fprintf( pFile, ".model %s\n", pMan->pName );
-    fprintf( pFile, "This file was produced by the AIG package in ABC on %s\n", Ioa_TimeStamp() );
-    fprintf( pFile, "For information about AIGER format, refer to %s\n", "http://fmv.jku.at/aiger" );
-    fclose( pFile );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one unsigned AIG edge to the output buffer.]
-
-  Description [This procedure is a slightly modified version of Armin Biere's
-  procedure "void encode (FILE * file, unsigned x)" ]
-  
-  SideEffects [Returns the current writing position.]
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ioa_WriteAigerEncode( char * pBuffer, int Pos, unsigned x )
-{
-    unsigned char ch;
-    while (x & ~0x7f)
-    {
-        ch = (x & 0x7f) | 0x80;
-//        putc (ch, file);
-        pBuffer[Pos++] = ch;
-        x >>= 7;
-    }
-    ch = x;
-//    putc (ch, file);
-    pBuffer[Pos++] = ch;
-    return Pos;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ioa/module.make b/src/aig/ioa/module.make
deleted file mode 100644
index 66b4a0d5..00000000
--- a/src/aig/ioa/module.make
+++ /dev/null
@@ -1,3 +0,0 @@
-SRC +=    src/aig/ioa/ioaReadAig.c \
-    src/aig/ioa/ioaWriteAig.c \
-    src/aig/ioa/ioaUtil.c      
diff --git a/src/aig/ivy/attr.h b/src/aig/ivy/attr.h
deleted file mode 100644
index 16cf0b84..00000000
--- a/src/aig/ivy/attr.h
+++ /dev/null
@@ -1,414 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [attr.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Network attributes.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: attr.h,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
-
-***********************************************************************/
- 
-#ifndef __ATTR_H__
-#define __ATTR_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include "extra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Attr_ManStruct_t_     Attr_Man_t;
-struct Attr_ManStruct_t_
-{
-    // attribute info
-    int                        nAttrSize;     // the size of each attribute in bytes
-    Extra_MmFixed_t *          pManMem;       // memory manager for attributes
-    int                        nAttrs;        // the number of attributes allocated
-    void **                    pAttrs;        // the array of attributes
-    int                        fUseInt;       // uses integer attributes
-    // attribute specific info
-    void *                     pManAttr;      // the manager for this attribute
-    void (*pFuncFreeMan) (void *);            // the procedure to call to free attribute-specific manager
-    void (*pFuncFreeObj) (void *, void *);    // the procedure to call to free attribute-specific data
-};
-
-// at any time, an attribute of the given ID can be
-// - not available (p->nAttrs < Id)
-// - available but not allocated (p->nAttrs >= Id && p->pAttrs[Id] == NULL)
-// - available and allocated (p->nAttrs >= Id && p->pAttrs[Id] != NULL)
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates the attribute manager.]
-
-  Description [The manager is simple if it does not need memory manager.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Attr_Man_t * Attr_ManAlloc( int nAttrSize, int fManMem )
-{
-    Attr_Man_t * p;
-    p = ALLOC( Attr_Man_t, 1 );
-    memset( p, 0, sizeof(Attr_Man_t) );
-    p->nAttrSize = nAttrSize;
-    if ( fManMem )
-        p->pManMem = Extra_MmFixedStart( nAttrSize );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Start the attribute manager for integers.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Attr_Man_t * Attr_ManStartInt( int nAttrs )
-{
-    Attr_Man_t * p;
-    p = Attr_ManAlloc( sizeof(int), 0 );
-    p->nAttrs  = nAttrs;
-    p->pAttrs  = (void **)ALLOC( int, nAttrs );
-    memset( (int *)p->pAttrs, 0, sizeof(int) * nAttrs );
-    p->fUseInt = 1;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Start the attribute manager for pointers.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Attr_Man_t * Attr_ManStartPtr( int nAttrs )
-{
-    Attr_Man_t * p;
-    p = Attr_ManAlloc( sizeof(void *), 0 );
-    p->nAttrs  = nAttrs;
-    p->pAttrs  = ALLOC( void *, nAttrs );
-    memset( p->pAttrs, 0, sizeof(void *) * nAttrs );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Start the attribute manager for the fixed entry size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Attr_Man_t * Attr_ManStartPtrMem( int nAttrs, int nAttrSize )
-{
-    Attr_Man_t * p;
-    int i;
-    p = Attr_ManAlloc( nAttrSize, 1 );
-    p->nAttrs  = nAttrs;
-    p->pAttrs  = ALLOC( void *, nAttrs );
-    for ( i = 0; i < p->nAttrs; i++ )
-    {
-        p->pAttrs[i] = Extra_MmFixedEntryFetch( p->pManMem );
-        memset( p->pAttrs[i], 0, nAttrSize );
-    }
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stop the attribute manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Attr_ManStop( Attr_Man_t * p )
-{
-    // free the attributes of objects
-    if ( p->pFuncFreeObj )
-    {
-        int i;
-        if ( p->fUseInt )
-        {
-            for ( i = 0; i < p->nAttrs; i++ )
-                if ( ((int *)p->pAttrs)[i] )
-                    p->pFuncFreeObj( p->pManAttr, (void *)((int *)p->pAttrs)[i] );
-        }
-        else
-        {
-            for ( i = 0; i < p->nAttrs; i++ )
-                if ( p->pAttrs[i] )
-                    p->pFuncFreeObj( p->pManAttr, p->pAttrs[i] );
-        }
-    }
-    // free the attribute manager
-    if ( p->pManAttr && p->pFuncFreeMan )
-        p->pFuncFreeMan( p->pManAttr );
-    // free the memory manager
-    if ( p->pManMem )  
-        Extra_MmFixedStop( p->pManMem);
-    // free the attribute manager
-    FREE( p->pAttrs );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reads the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Attr_ManReadAttrInt( Attr_Man_t * p, int Id )
-{
-    assert( p->fUseInt );
-    if ( Id >= p->nAttrs )
-        return 0;
-    return ((int *)p->pAttrs)[Id]; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reads the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void * Attr_ManReadAttrPtr( Attr_Man_t * p, int Id )
-{
-    assert( !p->fUseInt );
-    if ( Id >= p->nAttrs )
-        return NULL;
-    return p->pAttrs[Id]; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Attr_ManWriteAttrInt( Attr_Man_t * p, int Id, int Attr )
-{
-    assert( p->fUseInt );
-    ((int *)p->pAttrs)[Id] = Attr; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Attr_ManWriteAttrPtr( Attr_Man_t * p, int Id, void * pAttr )
-{
-    assert( !p->fUseInt );
-    assert( p->pManMem == NULL );
-    p->pAttrs[Id] = pAttr; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns or creates the pointer to the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int * Attr_ManFetchSpotInt( Attr_Man_t * p, int Id )
-{
-    assert( p->fUseInt );
-    if ( Id >= p->nAttrs )
-    {
-        // save the old size
-        int i, nAttrsOld = p->nAttrs;
-        // get the new size
-        p->nAttrs = p->nAttrs? 2*p->nAttrs : 1024;
-        p->pAttrs = realloc( p->pAttrs, sizeof(int) * p->nAttrs ); 
-        // fill in the empty spots
-        for ( i = nAttrsOld; i < p->nAttrs; i++ )
-            ((int *)p->pAttrs)[Id] = 0;
-    }
-    return ((int *)p->pAttrs) + Id;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns or creates the pointer to the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void ** Attr_ManFetchSpotPtr( Attr_Man_t * p, int Id )
-{
-    assert( !p->fUseInt );
-    if ( Id >= p->nAttrs )
-    {
-        // save the old size
-        int i, nAttrsOld = p->nAttrs;
-        // get the new size
-        p->nAttrs = p->nAttrs? 2*p->nAttrs : 1024;
-        p->pAttrs = realloc( p->pAttrs, sizeof(void *) * p->nAttrs ); 
-        // fill in the empty spots
-        for ( i = nAttrsOld; i < p->nAttrs; i++ )
-            p->pAttrs[Id] = NULL;
-    }
-    // if memory manager is available but entry is not created, create it
-    if ( p->pManMem && p->pAttrs[Id] != NULL ) 
-    {
-        p->pAttrs[Id] = Extra_MmFixedEntryFetch( p->pManMem );
-        memset( p->pAttrs[Id], 0, p->nAttrSize );
-    }
-    return p->pAttrs + Id;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Returns or creates the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Attr_ManFetchAttrInt( Attr_Man_t * p, int Id )
-{
-    return *Attr_ManFetchSpotInt( p, Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns or creates the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void * Attr_ManFetchAttrPtr( Attr_Man_t * p, int Id )
-{
-    return *Attr_ManFetchSpotPtr( p, Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Attr_ManSetAttrInt( Attr_Man_t * p, int Id, int Attr )
-{
-    *Attr_ManFetchSpotInt( p, Id ) = Attr;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the attribute of the given object.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Attr_ManSetAttrPtr( Attr_Man_t * p, int Id, void * pAttr )
-{
-    assert( p->pManMem == NULL );
-    *Attr_ManFetchSpotPtr( p, Id ) = pAttr;
-}
-
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/ivy/ivy.h b/src/aig/ivy/ivy.h
deleted file mode 100644
index ed19d67c..00000000
--- a/src/aig/ivy/ivy.h
+++ /dev/null
@@ -1,557 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivy.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivy.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __IVY_H__
-#define __IVY_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif 
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include "extra.h"
-#include "vec.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Ivy_Man_t_            Ivy_Man_t;
-typedef struct Ivy_Obj_t_            Ivy_Obj_t;
-typedef int                          Ivy_Edge_t;
-typedef struct Ivy_FraigParams_t_    Ivy_FraigParams_t;
-
-// object types
-typedef enum { 
-    IVY_NONE,                        // 0: non-existent object
-    IVY_PI,                          // 1: primary input (and constant 1 node)
-    IVY_PO,                          // 2: primary output
-    IVY_ASSERT,                      // 3: assertion
-    IVY_LATCH,                       // 4: sequential element
-    IVY_AND,                         // 5: AND node
-    IVY_EXOR,                        // 6: EXOR node
-    IVY_BUF,                         // 7: buffer (temporary)
-    IVY_VOID                         // 8: unused object
-} Ivy_Type_t;
-
-// latch initial values
-typedef enum { 
-    IVY_INIT_NONE,                   // 0: not a latch
-    IVY_INIT_0,                      // 1: zero
-    IVY_INIT_1,                      // 2: one
-    IVY_INIT_DC                      // 3: don't-care
-} Ivy_Init_t;
-
-// the AIG node
-struct Ivy_Obj_t_  // 24 bytes (32-bit) or 32 bytes (64-bit)   // 10 words - 16 words
-{
-    int              Id;             // integer ID
-    int              TravId;         // traversal ID
-    unsigned         Type     :  4;  // object type
-    unsigned         fMarkA   :  1;  // multipurpose mask
-    unsigned         fMarkB   :  1;  // multipurpose mask
-    unsigned         fExFan   :  1;  // set to 1 if last fanout added is EXOR
-    unsigned         fPhase   :  1;  // value under 000...0 pattern
-    unsigned         fFailTfo :  1;  // the TFO of the failed node
-    unsigned         Init     :  2;  // latch initial value
-    unsigned         Level    : 21;  // logic level
-    int              nRefs;          // reference counter
-    Ivy_Obj_t *      pFanin0;        // fanin
-    Ivy_Obj_t *      pFanin1;        // fanin
-    Ivy_Obj_t *      pFanout;        // fanout
-    Ivy_Obj_t *      pNextFan0;      // next fanout of the first fanin
-    Ivy_Obj_t *      pNextFan1;      // next fanout of the second fanin
-    Ivy_Obj_t *      pPrevFan0;      // prev fanout of the first fanin
-    Ivy_Obj_t *      pPrevFan1;      // prev fanout of the second fanin
-    Ivy_Obj_t *      pEquiv;         // equivalent node
-};
-
-// the AIG manager
-struct Ivy_Man_t_
-{
-    // AIG nodes
-    Vec_Ptr_t *      vPis;           // the array of PIs
-    Vec_Ptr_t *      vPos;           // the array of POs
-    Vec_Ptr_t *      vBufs;          // the array of buffers
-    Vec_Ptr_t *      vObjs;          // the array of objects
-    Ivy_Obj_t *      pConst1;        // the constant 1 node
-    Ivy_Obj_t        Ghost;          // the ghost node
-    // AIG node counters
-    int              nObjs[IVY_VOID];// the number of objects by type
-    int              nCreated;       // the number of created objects
-    int              nDeleted;       // the number of deleted objects
-    // stuctural hash table
-    int *            pTable;         // structural hash table
-    int              nTableSize;     // structural hash table size
-    // various data members
-    int              fCatchExor;     // set to 1 to detect EXORs
-    int              nTravIds;       // the traversal ID
-    int              nLevelMax;      // the maximum level
-    Vec_Int_t *      vRequired;      // required times
-    int              fFanout;        // fanout is allocated
-    void *           pData;          // the temporary data
-    void *           pCopy;          // the temporary data
-    Ivy_Man_t *      pHaig;          // history AIG if present
-    int              nClassesSkip;   // the number of skipped classes
-    // memory management
-    Vec_Ptr_t *      vChunks;        // allocated memory pieces
-    Vec_Ptr_t *      vPages;         // memory pages used by nodes
-    Ivy_Obj_t *      pListFree;      // the list of free nodes 
-    // timing statistics
-    int              time1;
-    int              time2;
-};
-
-struct Ivy_FraigParams_t_
-{
-    int              nSimWords;         // the number of words in the simulation info
-    double           dSimSatur;         // the ratio of refined classes when saturation is reached
-    int              fPatScores;        // enables simulation pattern scoring
-    int              MaxScore;          // max score after which resimulation is used
-    double           dActConeRatio;     // the ratio of cone to be bumped
-    double           dActConeBumpMax;   // the largest bump in activity
-    int              fProve;            // prove the miter outputs
-    int              fVerbose;          // verbose output
-    int              fDoSparse;         // skip sparse functions
-    int              nBTLimitNode;      // conflict limit at a node
-    int              nBTLimitMiter;     // conflict limit at an output
-//    int              nBTLimitGlobal;    // conflict limit global
-//    int              nInsLimitNode;     // inspection limit at a node
-//    int              nInsLimitMiter;    // inspection limit at an output
-//    int              nInsLimitGlobal;   // inspection limit global
-};
-
-
-#define IVY_CUT_LIMIT     256
-#define IVY_CUT_INPUT       6
-
-typedef struct Ivy_Cut_t_ Ivy_Cut_t;
-struct Ivy_Cut_t_
-{
-    int         nLatches;
-    short       nSize;
-    short       nSizeMax;
-    int         pArray[IVY_CUT_INPUT];
-    unsigned    uHash;
-};
-
-typedef struct Ivy_Store_t_ Ivy_Store_t;
-struct Ivy_Store_t_
-{
-    int         nCuts;
-    int         nCutsM;
-    int         nCutsMax;
-    int         fSatur;
-    Ivy_Cut_t   pCuts[IVY_CUT_LIMIT]; // storage for cuts
-};
-
-#define IVY_LEAF_MASK     255
-#define IVY_LEAF_BITS       8
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-#define IVY_MIN(a,b)       (((a) < (b))? (a) : (b))
-#define IVY_MAX(a,b)       (((a) > (b))? (a) : (b))
-
-static inline int          Ivy_BitWordNum( int nBits )            { return (nBits>>5) + ((nBits&31) > 0);           }
-static inline int          Ivy_TruthWordNum( int nVars )          { return nVars <= 5 ? 1 : (1 << (nVars - 5));     }
-static inline int          Ivy_InfoHasBit( unsigned * p, int i )  { return (p[(i)>>5] & (1<<((i) & 31))) > 0;       }
-static inline void         Ivy_InfoSetBit( unsigned * p, int i )  { p[(i)>>5] |= (1<<((i) & 31));                   }
-static inline void         Ivy_InfoXorBit( unsigned * p, int i )  { p[(i)>>5] ^= (1<<((i) & 31));                   }
-
-static inline Ivy_Obj_t *  Ivy_Regular( Ivy_Obj_t * p )           { return (Ivy_Obj_t *)((unsigned long)(p) & ~01);      }
-static inline Ivy_Obj_t *  Ivy_Not( Ivy_Obj_t * p )               { return (Ivy_Obj_t *)((unsigned long)(p) ^  01);      }
-static inline Ivy_Obj_t *  Ivy_NotCond( Ivy_Obj_t * p, int c )    { return (Ivy_Obj_t *)((unsigned long)(p) ^ (c));      }
-static inline int          Ivy_IsComplement( Ivy_Obj_t * p )      { return (int )(((unsigned long)p) & 01);              }
-
-static inline Ivy_Obj_t *  Ivy_ManConst0( Ivy_Man_t * p )         { return Ivy_Not(p->pConst1);                     }
-static inline Ivy_Obj_t *  Ivy_ManConst1( Ivy_Man_t * p )         { return p->pConst1;                              }
-static inline Ivy_Obj_t *  Ivy_ManGhost( Ivy_Man_t * p )          { return &p->Ghost;                               }
-static inline Ivy_Obj_t *  Ivy_ManPi( Ivy_Man_t * p, int i )      { return (Ivy_Obj_t *)Vec_PtrEntry(p->vPis, i);   }
-static inline Ivy_Obj_t *  Ivy_ManPo( Ivy_Man_t * p, int i )      { return (Ivy_Obj_t *)Vec_PtrEntry(p->vPos, i);   }
-static inline Ivy_Obj_t *  Ivy_ManObj( Ivy_Man_t * p, int i )     { return (Ivy_Obj_t *)Vec_PtrEntry(p->vObjs, i);  }
-
-static inline Ivy_Edge_t   Ivy_EdgeCreate( int Id, int fCompl )            { return (Id << 1) | fCompl;             }
-static inline int          Ivy_EdgeId( Ivy_Edge_t Edge )                   { return Edge >> 1;                      }
-static inline int          Ivy_EdgeIsComplement( Ivy_Edge_t Edge )         { return Edge & 1;                       }
-static inline Ivy_Edge_t   Ivy_EdgeRegular( Ivy_Edge_t Edge )              { return (Edge >> 1) << 1;               }
-static inline Ivy_Edge_t   Ivy_EdgeNot( Ivy_Edge_t Edge )                  { return Edge ^ 1;                       }
-static inline Ivy_Edge_t   Ivy_EdgeNotCond( Ivy_Edge_t Edge, int fCond )   { return Edge ^ fCond;                   }
-static inline Ivy_Edge_t   Ivy_EdgeFromNode( Ivy_Obj_t * pNode )           { return Ivy_EdgeCreate( Ivy_Regular(pNode)->Id, Ivy_IsComplement(pNode) );          }
-static inline Ivy_Obj_t *  Ivy_EdgeToNode( Ivy_Man_t * p, Ivy_Edge_t Edge ){ return Ivy_NotCond( Ivy_ManObj(p, Ivy_EdgeId(Edge)), Ivy_EdgeIsComplement(Edge) ); }
-
-static inline int          Ivy_LeafCreate( int Id, int Lat )      { return (Id << IVY_LEAF_BITS) | Lat;         }
-static inline int          Ivy_LeafId( int Leaf )                 { return Leaf >> IVY_LEAF_BITS;               }
-static inline int          Ivy_LeafLat( int Leaf )                { return Leaf & IVY_LEAF_MASK;                }
-
-static inline int          Ivy_ManPiNum( Ivy_Man_t * p )          { return p->nObjs[IVY_PI];                    }
-static inline int          Ivy_ManPoNum( Ivy_Man_t * p )          { return p->nObjs[IVY_PO];                    }
-static inline int          Ivy_ManAssertNum( Ivy_Man_t * p )      { return p->nObjs[IVY_ASSERT];                }
-static inline int          Ivy_ManLatchNum( Ivy_Man_t * p )       { return p->nObjs[IVY_LATCH];                 }
-static inline int          Ivy_ManAndNum( Ivy_Man_t * p )         { return p->nObjs[IVY_AND];                   }
-static inline int          Ivy_ManExorNum( Ivy_Man_t * p )        { return p->nObjs[IVY_EXOR];                  }
-static inline int          Ivy_ManBufNum( Ivy_Man_t * p )         { return p->nObjs[IVY_BUF];                   }
-static inline int          Ivy_ManObjNum( Ivy_Man_t * p )         { return p->nCreated - p->nDeleted;           }
-static inline int          Ivy_ManObjIdMax( Ivy_Man_t * p )       { return Vec_PtrSize(p->vObjs)-1;             }
-static inline int          Ivy_ManNodeNum( Ivy_Man_t * p )        { return p->nObjs[IVY_AND]+p->nObjs[IVY_EXOR];}
-static inline int          Ivy_ManHashObjNum( Ivy_Man_t * p )     { return p->nObjs[IVY_AND]+p->nObjs[IVY_EXOR]+p->nObjs[IVY_LATCH];     }
-static inline int          Ivy_ManGetCost( Ivy_Man_t * p )        { return p->nObjs[IVY_AND]+3*p->nObjs[IVY_EXOR]+8*p->nObjs[IVY_LATCH]; }
-
-static inline Ivy_Type_t   Ivy_ObjType( Ivy_Obj_t * pObj )        { return pObj->Type;               }
-static inline Ivy_Init_t   Ivy_ObjInit( Ivy_Obj_t * pObj )        { return pObj->Init;               }
-static inline int          Ivy_ObjIsConst1( Ivy_Obj_t * pObj )    { return pObj->Id == 0;            }
-static inline int          Ivy_ObjIsGhost( Ivy_Obj_t * pObj )     { return pObj->Id < 0;             }
-static inline int          Ivy_ObjIsNone( Ivy_Obj_t * pObj )      { return pObj->Type == IVY_NONE;   }
-static inline int          Ivy_ObjIsPi( Ivy_Obj_t * pObj )        { return pObj->Type == IVY_PI;     }
-static inline int          Ivy_ObjIsPo( Ivy_Obj_t * pObj )        { return pObj->Type == IVY_PO;     }
-static inline int          Ivy_ObjIsCi( Ivy_Obj_t * pObj )        { return pObj->Type == IVY_PI || pObj->Type == IVY_LATCH; }
-static inline int          Ivy_ObjIsCo( Ivy_Obj_t * pObj )        { return pObj->Type == IVY_PO || pObj->Type == IVY_LATCH; }
-static inline int          Ivy_ObjIsAssert( Ivy_Obj_t * pObj )    { return pObj->Type == IVY_ASSERT; }
-static inline int          Ivy_ObjIsLatch( Ivy_Obj_t * pObj )     { return pObj->Type == IVY_LATCH;  }
-static inline int          Ivy_ObjIsAnd( Ivy_Obj_t * pObj )       { return pObj->Type == IVY_AND;    }
-static inline int          Ivy_ObjIsExor( Ivy_Obj_t * pObj )      { return pObj->Type == IVY_EXOR;   }
-static inline int          Ivy_ObjIsBuf( Ivy_Obj_t * pObj )       { return pObj->Type == IVY_BUF;    }
-static inline int          Ivy_ObjIsNode( Ivy_Obj_t * pObj )      { return pObj->Type == IVY_AND || pObj->Type == IVY_EXOR; }
-static inline int          Ivy_ObjIsTerm( Ivy_Obj_t * pObj )      { return pObj->Type == IVY_PI  || pObj->Type == IVY_PO || pObj->Type == IVY_ASSERT; }
-static inline int          Ivy_ObjIsHash( Ivy_Obj_t * pObj )      { return pObj->Type == IVY_AND || pObj->Type == IVY_EXOR || pObj->Type == IVY_LATCH; }
-static inline int          Ivy_ObjIsOneFanin( Ivy_Obj_t * pObj )  { return pObj->Type == IVY_PO  || pObj->Type == IVY_ASSERT || pObj->Type == IVY_BUF || pObj->Type == IVY_LATCH; }
-
-static inline int          Ivy_ObjIsMarkA( Ivy_Obj_t * pObj )     { return pObj->fMarkA;  }
-static inline void         Ivy_ObjSetMarkA( Ivy_Obj_t * pObj )    { pObj->fMarkA = 1;     }
-static inline void         Ivy_ObjClearMarkA( Ivy_Obj_t * pObj )  { pObj->fMarkA = 0;     }
- 
-static inline void         Ivy_ObjSetTravId( Ivy_Obj_t * pObj, int TravId )                { pObj->TravId = TravId;                               }
-static inline void         Ivy_ObjSetTravIdCurrent( Ivy_Man_t * p, Ivy_Obj_t * pObj )      { pObj->TravId = p->nTravIds;                          }
-static inline void         Ivy_ObjSetTravIdPrevious( Ivy_Man_t * p, Ivy_Obj_t * pObj )     { pObj->TravId = p->nTravIds - 1;                      }
-static inline int          Ivy_ObjIsTravIdCurrent( Ivy_Man_t * p, Ivy_Obj_t * pObj )       { return (int )((int)pObj->TravId == p->nTravIds);     }
-static inline int          Ivy_ObjIsTravIdPrevious( Ivy_Man_t * p, Ivy_Obj_t * pObj )      { return (int )((int)pObj->TravId == p->nTravIds - 1); }
-
-static inline int          Ivy_ObjId( Ivy_Obj_t * pObj )          { return pObj->Id;                               }
-static inline int          Ivy_ObjTravId( Ivy_Obj_t * pObj )      { return pObj->TravId;                           }
-static inline int          Ivy_ObjPhase( Ivy_Obj_t * pObj )       { return pObj->fPhase;                           }
-static inline int          Ivy_ObjExorFanout( Ivy_Obj_t * pObj )  { return pObj->fExFan;                           }
-static inline int          Ivy_ObjRefs( Ivy_Obj_t * pObj )        { return pObj->nRefs;                            }
-static inline void         Ivy_ObjRefsInc( Ivy_Obj_t * pObj )     { pObj->nRefs++;                                 }
-static inline void         Ivy_ObjRefsDec( Ivy_Obj_t * pObj )     { assert( pObj->nRefs > 0 ); pObj->nRefs--;      }
-static inline int          Ivy_ObjFaninId0( Ivy_Obj_t * pObj )    { return pObj->pFanin0? Ivy_ObjId(Ivy_Regular(pObj->pFanin0)) : 0; }
-static inline int          Ivy_ObjFaninId1( Ivy_Obj_t * pObj )    { return pObj->pFanin1? Ivy_ObjId(Ivy_Regular(pObj->pFanin1)) : 0; }
-static inline int          Ivy_ObjFaninC0( Ivy_Obj_t * pObj )     { return Ivy_IsComplement(pObj->pFanin0);        }
-static inline int          Ivy_ObjFaninC1( Ivy_Obj_t * pObj )     { return Ivy_IsComplement(pObj->pFanin1);        }
-static inline Ivy_Obj_t *  Ivy_ObjFanin0( Ivy_Obj_t * pObj )      { return Ivy_Regular(pObj->pFanin0);             }
-static inline Ivy_Obj_t *  Ivy_ObjFanin1( Ivy_Obj_t * pObj )      { return Ivy_Regular(pObj->pFanin1);             }
-static inline Ivy_Obj_t *  Ivy_ObjChild0( Ivy_Obj_t * pObj )      { return pObj->pFanin0;                          }
-static inline Ivy_Obj_t *  Ivy_ObjChild1( Ivy_Obj_t * pObj )      { return pObj->pFanin1;                          }
-static inline Ivy_Obj_t *  Ivy_ObjChild0Equiv( Ivy_Obj_t * pObj ) { assert( !Ivy_IsComplement(pObj) ); return Ivy_ObjFanin0(pObj)? Ivy_NotCond(Ivy_ObjFanin0(pObj)->pEquiv, Ivy_ObjFaninC0(pObj)) : NULL;  }
-static inline Ivy_Obj_t *  Ivy_ObjChild1Equiv( Ivy_Obj_t * pObj ) { assert( !Ivy_IsComplement(pObj) ); return Ivy_ObjFanin1(pObj)? Ivy_NotCond(Ivy_ObjFanin1(pObj)->pEquiv, Ivy_ObjFaninC1(pObj)) : NULL;  }
-static inline Ivy_Obj_t *  Ivy_ObjEquiv( Ivy_Obj_t * pObj )       { return Ivy_Regular(pObj)->pEquiv? Ivy_NotCond(Ivy_Regular(pObj)->pEquiv, Ivy_IsComplement(pObj)) : NULL; }
-static inline int          Ivy_ObjLevel( Ivy_Obj_t * pObj )       { return pObj->Level;                            }
-static inline int          Ivy_ObjLevelNew( Ivy_Obj_t * pObj )    { return 1 + Ivy_ObjIsExor(pObj) + IVY_MAX(Ivy_ObjFanin0(pObj)->Level, Ivy_ObjFanin1(pObj)->Level);       }
-static inline int          Ivy_ObjFaninPhase( Ivy_Obj_t * pObj )  { return Ivy_IsComplement(pObj)? !Ivy_Regular(pObj)->fPhase : pObj->fPhase; }
-
-static inline void         Ivy_ObjClean( Ivy_Obj_t * pObj )       
-{ 
-    int IdSaved = pObj->Id; 
-    memset( pObj, 0, sizeof(Ivy_Obj_t) ); 
-    pObj->Id = IdSaved; 
-}
-static inline void         Ivy_ObjOverwrite( Ivy_Obj_t * pBase, Ivy_Obj_t * pData )   
-{ 
-    int IdSaved = pBase->Id; 
-    memcpy( pBase, pData, sizeof(Ivy_Obj_t) ); 
-    pBase->Id = IdSaved;         
-}
-static inline int          Ivy_ObjWhatFanin( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanin )    
-{ 
-    if ( Ivy_ObjFanin0(pObj) == pFanin ) return 0; 
-    if ( Ivy_ObjFanin1(pObj) == pFanin ) return 1; 
-    assert(0); return -1; 
-}
-static inline int          Ivy_ObjFanoutC( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout )    
-{ 
-    if ( Ivy_ObjFanin0(pFanout) == pObj ) return Ivy_ObjFaninC0(pObj); 
-    if ( Ivy_ObjFanin1(pFanout) == pObj ) return Ivy_ObjFaninC1(pObj); 
-    assert(0); return -1; 
-}
-
-// create the ghost of the new node
-static inline Ivy_Obj_t *  Ivy_ObjCreateGhost( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1, Ivy_Type_t Type, Ivy_Init_t Init )    
-{
-    Ivy_Obj_t * pGhost, * pTemp;
-    assert( Type != IVY_AND || !Ivy_ObjIsConst1(Ivy_Regular(p0)) );
-    assert( p1 == NULL || !Ivy_ObjIsConst1(Ivy_Regular(p1)) );
-    assert( Type == IVY_PI || Ivy_Regular(p0) != Ivy_Regular(p1) );
-    assert( Type != IVY_LATCH || !Ivy_IsComplement(p0) );
-//    assert( p1 == NULL || (!Ivy_ObjIsLatch(Ivy_Regular(p0)) || !Ivy_ObjIsLatch(Ivy_Regular(p1))) );
-    pGhost = Ivy_ManGhost(p);
-    pGhost->Type = Type;
-    pGhost->Init = Init;
-    pGhost->pFanin0 = p0;
-    pGhost->pFanin1 = p1;
-    if ( p1 && Ivy_ObjFaninId0(pGhost) > Ivy_ObjFaninId1(pGhost) )
-        pTemp = pGhost->pFanin0, pGhost->pFanin0 = pGhost->pFanin1, pGhost->pFanin1 = pTemp;
-    return pGhost;
-}
-
-// get the complemented initial state
-static Ivy_Init_t Ivy_InitNotCond( Ivy_Init_t Init, int fCompl )
-{
-    assert( Init != IVY_INIT_NONE );
-    if ( fCompl == 0 )
-        return Init;
-    if ( Init == IVY_INIT_0 )
-        return IVY_INIT_1;
-    if ( Init == IVY_INIT_1 )
-        return IVY_INIT_0;
-    return IVY_INIT_DC;
-}
-
-// get the initial state after forward retiming over AND gate
-static Ivy_Init_t Ivy_InitAnd( Ivy_Init_t InitA, Ivy_Init_t InitB )
-{
-    assert( InitA != IVY_INIT_NONE && InitB != IVY_INIT_NONE );
-    if ( InitA == IVY_INIT_0 || InitB == IVY_INIT_0 )
-        return IVY_INIT_0;
-    if ( InitA == IVY_INIT_DC || InitB == IVY_INIT_DC )
-        return IVY_INIT_DC;
-    return IVY_INIT_1;
-}
-
-// get the initial state after forward retiming over EXOR gate
-static Ivy_Init_t Ivy_InitExor( Ivy_Init_t InitA, Ivy_Init_t InitB )
-{
-    assert( InitA != IVY_INIT_NONE && InitB != IVY_INIT_NONE );
-    if ( InitA == IVY_INIT_DC || InitB == IVY_INIT_DC )
-        return IVY_INIT_DC;
-    if ( InitA == IVY_INIT_0 && InitB == IVY_INIT_1 )
-        return IVY_INIT_1;
-    if ( InitA == IVY_INIT_1 && InitB == IVY_INIT_0 )
-        return IVY_INIT_1;
-    return IVY_INIT_0;
-}
-
-// internal memory manager
-static inline Ivy_Obj_t * Ivy_ManFetchMemory( Ivy_Man_t * p )  
-{ 
-    extern void Ivy_ManAddMemory( Ivy_Man_t * p );
-    Ivy_Obj_t * pTemp;
-    if ( p->pListFree == NULL )
-        Ivy_ManAddMemory( p );
-    pTemp = p->pListFree;
-    p->pListFree = *((Ivy_Obj_t **)pTemp);
-    memset( pTemp, 0, sizeof(Ivy_Obj_t) ); 
-    return pTemp;
-}
-static inline void Ivy_ManRecycleMemory( Ivy_Man_t * p, Ivy_Obj_t * pEntry )
-{
-    pEntry->Type = IVY_NONE; // distinquishes dead node from live node
-    *((Ivy_Obj_t **)pEntry) = p->pListFree;
-    p->pListFree = pEntry;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                             ITERATORS                            ///
-////////////////////////////////////////////////////////////////////////
-
-// iterator over the primary inputs
-#define Ivy_ManForEachPi( p, pObj, i )                                          \
-    Vec_PtrForEachEntry( p->vPis, pObj, i )
-// iterator over the primary outputs
-#define Ivy_ManForEachPo( p, pObj, i )                                          \
-    Vec_PtrForEachEntry( p->vPos, pObj, i )
-// iterator over all objects, including those currently not used
-#define Ivy_ManForEachObj( p, pObj, i )                                         \
-    Vec_PtrForEachEntry( p->vObjs, pObj, i ) if ( (pObj) == NULL ) {} else
-// iterator over the combinational inputs
-#define Ivy_ManForEachCi( p, pObj, i )                                          \
-    Ivy_ManForEachObj( p, pObj, i ) if ( !Ivy_ObjIsCi(pObj) ) {} else
-// iterator over the combinational outputs
-#define Ivy_ManForEachCo( p, pObj, i )                                          \
-    Ivy_ManForEachObj( p, pObj, i ) if ( !Ivy_ObjIsCo(pObj) ) {} else
-// iterator over logic nodes (AND and EXOR gates)
-#define Ivy_ManForEachNode( p, pObj, i )                                        \
-    Ivy_ManForEachObj( p, pObj, i ) if ( !Ivy_ObjIsNode(pObj) ) {} else
-// iterator over logic latches
-#define Ivy_ManForEachLatch( p, pObj, i )                                       \
-    Ivy_ManForEachObj( p, pObj, i ) if ( !Ivy_ObjIsLatch(pObj) ) {} else
-// iterator over the nodes whose IDs are stored in the array
-#define Ivy_ManForEachNodeVec( p, vIds, pObj, i )                               \
-    for ( i = 0; i < Vec_IntSize(vIds) && ((pObj) = Ivy_ManObj(p, Vec_IntEntry(vIds,i))); i++ )
-// iterator over the fanouts of an object
-#define Ivy_ObjForEachFanout( p, pObj, vArray, pFanout, i )                     \
-    for ( i = 0, Ivy_ObjCollectFanouts(p, pObj, vArray);                        \
-          i < Vec_PtrSize(vArray) && ((pFanout) = Vec_PtrEntry(vArray,i)); i++ )
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== ivyBalance.c ========================================================*/
-extern Ivy_Man_t *     Ivy_ManBalance( Ivy_Man_t * p, int fUpdateLevel );
-extern Ivy_Obj_t *     Ivy_NodeBalanceBuildSuper( Ivy_Man_t * p, Vec_Ptr_t * vSuper, Ivy_Type_t Type, int fUpdateLevel );
-/*=== ivyCanon.c ========================================================*/
-extern Ivy_Obj_t *     Ivy_CanonAnd( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t *     Ivy_CanonExor( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t *     Ivy_CanonLatch( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Init_t Init );
-/*=== ivyCheck.c ========================================================*/
-extern int             Ivy_ManCheck( Ivy_Man_t * p );
-extern int             Ivy_ManCheckFanoutNums( Ivy_Man_t * p );
-extern int             Ivy_ManCheckFanouts( Ivy_Man_t * p );
-extern int             Ivy_ManCheckChoices( Ivy_Man_t * p );
-/*=== ivyCut.c ==========================================================*/
-extern void            Ivy_ManSeqFindCut( Ivy_Man_t * p, Ivy_Obj_t * pNode, Vec_Int_t * vFront, Vec_Int_t * vInside, int nSize );
-extern Ivy_Store_t *   Ivy_NodeFindCutsAll( Ivy_Man_t * p, Ivy_Obj_t * pObj, int nLeaves );
-/*=== ivyDfs.c ==========================================================*/
-extern Vec_Int_t *     Ivy_ManDfs( Ivy_Man_t * p );
-extern Vec_Int_t *     Ivy_ManDfsSeq( Ivy_Man_t * p, Vec_Int_t ** pvLatches );
-extern void            Ivy_ManCollectCone( Ivy_Obj_t * pObj, Vec_Ptr_t * vFront, Vec_Ptr_t * vCone );
-extern Vec_Vec_t *     Ivy_ManLevelize( Ivy_Man_t * p );
-extern Vec_Int_t *     Ivy_ManRequiredLevels( Ivy_Man_t * p );
-extern int             Ivy_ManIsAcyclic( Ivy_Man_t * p );
-extern int             Ivy_ManSetLevels( Ivy_Man_t * p, int fHaig );
-/*=== ivyDsd.c ==========================================================*/
-extern int             Ivy_TruthDsd( unsigned uTruth, Vec_Int_t * vTree );
-extern void            Ivy_TruthDsdPrint( FILE * pFile, Vec_Int_t * vTree );
-extern unsigned        Ivy_TruthDsdCompute( Vec_Int_t * vTree );
-extern void            Ivy_TruthDsdComputePrint( unsigned uTruth );
-extern Ivy_Obj_t *     Ivy_ManDsdConstruct( Ivy_Man_t * p, Vec_Int_t * vFront, Vec_Int_t * vTree );
-/*=== ivyFanout.c ==========================================================*/
-extern void            Ivy_ManStartFanout( Ivy_Man_t * p );
-extern void            Ivy_ManStopFanout( Ivy_Man_t * p );
-extern void            Ivy_ObjAddFanout( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout );
-extern void            Ivy_ObjDeleteFanout( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout );
-extern void            Ivy_ObjPatchFanout( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFanoutOld, Ivy_Obj_t * pFanoutNew );
-extern void            Ivy_ObjCollectFanouts( Ivy_Man_t * p, Ivy_Obj_t * pObj, Vec_Ptr_t * vArray );
-extern Ivy_Obj_t *     Ivy_ObjReadFirstFanout( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern int             Ivy_ObjFanoutNum( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-/*=== ivyFastMap.c =============================================================*/
-extern void            Ivy_FastMapPerform( Ivy_Man_t * pAig, int nLimit, int fRecovery, int fVerbose );
-extern void            Ivy_FastMapStop( Ivy_Man_t * pAig );
-extern void            Ivy_FastMapReadSupp( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, Vec_Int_t * vLeaves );
-extern void            Ivy_FastMapReverseLevel( Ivy_Man_t * pAig );
-/*=== ivyFraig.c ==========================================================*/
-extern int             Ivy_FraigProve( Ivy_Man_t ** ppManAig, void * pPars );
-extern Ivy_Man_t *     Ivy_FraigPerform( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams );
-extern Ivy_Man_t *     Ivy_FraigMiter( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams );
-extern void            Ivy_FraigParamsDefault( Ivy_FraigParams_t * pParams );
-/*=== ivyHaig.c ==========================================================*/
-extern void            Ivy_ManHaigStart( Ivy_Man_t * p, int fVerbose );
-extern void            Ivy_ManHaigTrasfer( Ivy_Man_t * p, Ivy_Man_t * pNew );
-extern void            Ivy_ManHaigStop( Ivy_Man_t * p );
-extern void            Ivy_ManHaigPostprocess( Ivy_Man_t * p, int fVerbose );
-extern void            Ivy_ManHaigCreateObj( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void            Ivy_ManHaigCreateChoice( Ivy_Man_t * p, Ivy_Obj_t * pObjOld, Ivy_Obj_t * pObjNew );
-extern void            Ivy_ManHaigSimulate( Ivy_Man_t * p );
-/*=== ivyMan.c ==========================================================*/
-extern Ivy_Man_t *     Ivy_ManStart();
-extern Ivy_Man_t *     Ivy_ManStartFrom( Ivy_Man_t * p );
-extern Ivy_Man_t *     Ivy_ManDup( Ivy_Man_t * p );
-extern Ivy_Man_t *     Ivy_ManFrames( Ivy_Man_t * pMan, int nLatches, int nFrames, int fInit, Vec_Ptr_t ** pvMapping );
-extern void            Ivy_ManStop( Ivy_Man_t * p );
-extern int             Ivy_ManCleanup( Ivy_Man_t * p );
-extern int             Ivy_ManPropagateBuffers( Ivy_Man_t * p, int fUpdateLevel );
-extern void            Ivy_ManPrintStats( Ivy_Man_t * p );
-extern void            Ivy_ManMakeSeq( Ivy_Man_t * p, int nLatches, int * pInits );
-/*=== ivyMem.c ==========================================================*/
-extern void            Ivy_ManStartMemory( Ivy_Man_t * p );
-extern void            Ivy_ManStopMemory( Ivy_Man_t * p );
-/*=== ivyMulti.c ==========================================================*/
-extern Ivy_Obj_t *     Ivy_Multi( Ivy_Man_t * p, Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type );
-extern Ivy_Obj_t *     Ivy_Multi1( Ivy_Man_t * p, Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type );
-extern Ivy_Obj_t *     Ivy_Multi_rec( Ivy_Man_t * p, Ivy_Obj_t ** ppObjs, int nObjs, Ivy_Type_t Type );
-extern Ivy_Obj_t *     Ivy_MultiBalance_rec( Ivy_Man_t * p, Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type );
-extern int             Ivy_MultiPlus( Ivy_Man_t * p, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vCone, Ivy_Type_t Type, int nLimit, Vec_Ptr_t * vSol );
-/*=== ivyObj.c ==========================================================*/
-extern Ivy_Obj_t *     Ivy_ObjCreatePi( Ivy_Man_t * p );
-extern Ivy_Obj_t *     Ivy_ObjCreatePo( Ivy_Man_t * p, Ivy_Obj_t * pDriver );
-extern Ivy_Obj_t *     Ivy_ObjCreate( Ivy_Man_t * p, Ivy_Obj_t * pGhost );
-extern void            Ivy_ObjConnect( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFan0, Ivy_Obj_t * pFan1 );
-extern void            Ivy_ObjDisconnect( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void            Ivy_ObjPatchFanin0( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFaninNew );
-extern void            Ivy_ObjDelete( Ivy_Man_t * p, Ivy_Obj_t * pObj, int fFreeTop );
-extern void            Ivy_ObjDelete_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj, int fFreeTop );
-extern void            Ivy_ObjReplace( Ivy_Man_t * p, Ivy_Obj_t * pObjOld, Ivy_Obj_t * pObjNew, int fDeleteOld, int fFreeTop, int fUpdateLevel );
-extern void            Ivy_NodeFixBufferFanins( Ivy_Man_t * p, Ivy_Obj_t * pNode, int fUpdateLevel );
-/*=== ivyOper.c =========================================================*/
-extern Ivy_Obj_t *     Ivy_Oper( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1, Ivy_Type_t Type );
-extern Ivy_Obj_t *     Ivy_And( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t *     Ivy_Or( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t *     Ivy_Exor( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t *     Ivy_Mux( Ivy_Man_t * p, Ivy_Obj_t * pC, Ivy_Obj_t * p1, Ivy_Obj_t * p0 );
-extern Ivy_Obj_t *     Ivy_Maj( Ivy_Man_t * p, Ivy_Obj_t * pA, Ivy_Obj_t * pB, Ivy_Obj_t * pC );
-extern Ivy_Obj_t *     Ivy_Miter( Ivy_Man_t * p, Vec_Ptr_t * vPairs );
-extern Ivy_Obj_t *     Ivy_Latch( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Init_t Init );
-/*=== ivyResyn.c =========================================================*/
-extern Ivy_Man_t *     Ivy_ManResyn0( Ivy_Man_t * p, int fUpdateLevel, int fVerbose );
-extern Ivy_Man_t *     Ivy_ManResyn( Ivy_Man_t * p, int fUpdateLevel, int fVerbose );
-extern Ivy_Man_t *     Ivy_ManRwsat( Ivy_Man_t * pMan, int fVerbose );
-/*=== ivyRewrite.c =========================================================*/
-extern int             Ivy_ManSeqRewrite( Ivy_Man_t * p, int fUpdateLevel, int fUseZeroCost );
-extern int             Ivy_ManRewriteAlg( Ivy_Man_t * p, int fUpdateLevel, int fUseZeroCost );
-extern int             Ivy_ManRewritePre( Ivy_Man_t * p, int fUpdateLevel, int fUseZeroCost, int fVerbose );
-/*=== ivySeq.c =========================================================*/
-extern int             Ivy_ManRewriteSeq( Ivy_Man_t * p, int fUseZeroCost, int fVerbose );
-/*=== ivyShow.c =========================================================*/
-extern void            Ivy_ManShow( Ivy_Man_t * pMan, int fHaig, Vec_Ptr_t * vBold );
-/*=== ivyTable.c ========================================================*/
-extern Ivy_Obj_t *     Ivy_TableLookup( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void            Ivy_TableInsert( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void            Ivy_TableDelete( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void            Ivy_TableUpdate( Ivy_Man_t * p, Ivy_Obj_t * pObj, int ObjIdNew );
-extern int             Ivy_TableCountEntries( Ivy_Man_t * p );
-extern void            Ivy_TableProfile( Ivy_Man_t * p );
-/*=== ivyUtil.c =========================================================*/
-extern void            Ivy_ManIncrementTravId( Ivy_Man_t * p );
-extern void            Ivy_ManCleanTravId( Ivy_Man_t * p );
-extern unsigned *      Ivy_ManCutTruth( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Vec_Int_t * vLeaves, Vec_Int_t * vNodes, Vec_Int_t * vTruth );
-extern void            Ivy_ManCollectCut( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Vec_Int_t * vLeaves, Vec_Int_t * vNodes );
-extern Vec_Int_t *     Ivy_ManLatches( Ivy_Man_t * p );
-extern int             Ivy_ManLevels( Ivy_Man_t * p );
-extern void            Ivy_ManResetLevels( Ivy_Man_t * p );
-extern int             Ivy_ObjMffcLabel( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void            Ivy_ObjUpdateLevel_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void            Ivy_ObjUpdateLevelR_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj, int ReqNew );
-extern int             Ivy_ObjIsMuxType( Ivy_Obj_t * pObj );
-extern Ivy_Obj_t *     Ivy_ObjRecognizeMux( Ivy_Obj_t * pObj, Ivy_Obj_t ** ppObjT, Ivy_Obj_t ** ppObjE );
-extern Ivy_Obj_t *     Ivy_ObjReal( Ivy_Obj_t * pObj );
-extern void            Ivy_ObjPrintVerbose( Ivy_Man_t * p, Ivy_Obj_t * pObj, int fHaig );
-extern void            Ivy_ManPrintVerbose( Ivy_Man_t * p, int fHaig );
-extern int             Ivy_CutTruthPrint( Ivy_Man_t * p, Ivy_Cut_t * pCut, unsigned uTruth );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/ivy/ivyBalance.c b/src/aig/ivy/ivyBalance.c
deleted file mode 100644
index 5627039a..00000000
--- a/src/aig/ivy/ivyBalance.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyBalance.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Algebraic AIG balancing.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyBalance.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static int         Ivy_NodeBalance_rec( Ivy_Man_t * pNew, Ivy_Obj_t * pObj, Vec_Vec_t * vStore, int Level, int fUpdateLevel );
-static Vec_Ptr_t * Ivy_NodeBalanceCone( Ivy_Obj_t * pObj, Vec_Vec_t * vStore, int Level );
-static int         Ivy_NodeBalanceFindLeft( Vec_Ptr_t * vSuper );
-static void        Ivy_NodeBalancePermute( Ivy_Man_t * p, Vec_Ptr_t * vSuper, int LeftBound, int fExor );
-static void        Ivy_NodeBalancePushUniqueOrderByLevel( Vec_Ptr_t * vStore, Ivy_Obj_t * pObj );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Performs algebraic balancing of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_ManBalance( Ivy_Man_t * p, int fUpdateLevel )
-{
-    Ivy_Man_t * pNew;
-    Ivy_Obj_t * pObj, * pDriver;
-    Vec_Vec_t * vStore;
-    int i, NewNodeId;
-    // clean the old manager
-    Ivy_ManCleanTravId( p );
-    // create the new manager 
-    pNew = Ivy_ManStart();
-    // map the nodes
-    Ivy_ManConst1(p)->TravId = Ivy_EdgeFromNode( Ivy_ManConst1(pNew) );
-    Ivy_ManForEachPi( p, pObj, i )
-        pObj->TravId = Ivy_EdgeFromNode( Ivy_ObjCreatePi(pNew) );
-    // if HAIG is defined, trasfer the pointers to the PIs/latches
-//    if ( p->pHaig )
-//        Ivy_ManHaigTrasfer( p, pNew );
-    // balance the AIG
-    vStore = Vec_VecAlloc( 50 );
-    Ivy_ManForEachPo( p, pObj, i )
-    {
-        pDriver   = Ivy_ObjReal( Ivy_ObjChild0(pObj) );
-        NewNodeId = Ivy_NodeBalance_rec( pNew, Ivy_Regular(pDriver), vStore, 0, fUpdateLevel );
-        NewNodeId = Ivy_EdgeNotCond( NewNodeId, Ivy_IsComplement(pDriver) );
-        Ivy_ObjCreatePo( pNew, Ivy_EdgeToNode(pNew, NewNodeId) );
-    }
-    Vec_VecFree( vStore );
-    if ( i = Ivy_ManCleanup( pNew ) )
-    {
-//        printf( "Cleanup after balancing removed %d dangling nodes.\n", i );
-    }
-    // check the resulting AIG
-    if ( !Ivy_ManCheck(pNew) )
-        printf( "Ivy_ManBalance(): The check has failed.\n" );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Procedure used for sorting the nodes in decreasing order of levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeCompareLevelsDecrease( Ivy_Obj_t ** pp1, Ivy_Obj_t ** pp2 )
-{
-    int Diff = Ivy_Regular(*pp1)->Level - Ivy_Regular(*pp2)->Level;
-    if ( Diff > 0 )
-        return -1;
-    if ( Diff < 0 ) 
-        return 1;
-    return 0; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the ID of new node constructed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeBalance_rec( Ivy_Man_t * pNew, Ivy_Obj_t * pObjOld, Vec_Vec_t * vStore, int Level, int fUpdateLevel )
-{
-    Ivy_Obj_t * pObjNew;
-    Vec_Ptr_t * vSuper;
-    int i, NewNodeId;
-    assert( !Ivy_IsComplement(pObjOld) );
-    assert( !Ivy_ObjIsBuf(pObjOld) );
-    // return if the result is known
-    if ( Ivy_ObjIsConst1(pObjOld) )
-        return pObjOld->TravId;
-    if ( pObjOld->TravId )
-        return pObjOld->TravId;
-    assert( Ivy_ObjIsNode(pObjOld) );
-    // get the implication supergate
-    vSuper = Ivy_NodeBalanceCone( pObjOld, vStore, Level );
-    if ( vSuper->nSize == 0 )
-    { // it means that the supergate contains two nodes in the opposite polarity
-        pObjOld->TravId = Ivy_EdgeFromNode( Ivy_ManConst0(pNew) );
-        return pObjOld->TravId;
-    }
-    if ( vSuper->nSize < 2 )
-        printf( "BUG!\n" );
-    // for each old node, derive the new well-balanced node
-    for ( i = 0; i < vSuper->nSize; i++ )
-    {
-        NewNodeId = Ivy_NodeBalance_rec( pNew, Ivy_Regular(vSuper->pArray[i]), vStore, Level + 1, fUpdateLevel );
-        NewNodeId = Ivy_EdgeNotCond( NewNodeId, Ivy_IsComplement(vSuper->pArray[i]) );
-        vSuper->pArray[i] = Ivy_EdgeToNode( pNew, NewNodeId );
-    }
-    // build the supergate
-    pObjNew = Ivy_NodeBalanceBuildSuper( pNew, vSuper, Ivy_ObjType(pObjOld), fUpdateLevel );
-    vSuper->nSize = 0;
-    // make sure the balanced node is not assigned
-    assert( pObjOld->TravId == 0 );
-    pObjOld->TravId = Ivy_EdgeFromNode( pObjNew );
-//    assert( pObjOld->Level >= Ivy_Regular(pObjNew)->Level );
-    return pObjOld->TravId;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Builds implication supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_NodeBalanceBuildSuper( Ivy_Man_t * p, Vec_Ptr_t * vSuper, Ivy_Type_t Type, int fUpdateLevel )
-{
-    Ivy_Obj_t * pObj1, * pObj2;
-    int LeftBound;
-    assert( vSuper->nSize > 1 );
-    // sort the new nodes by level in the decreasing order
-    Vec_PtrSort( vSuper, Ivy_NodeCompareLevelsDecrease );
-    // balance the nodes
-    while ( vSuper->nSize > 1 )
-    {
-        // find the left bound on the node to be paired
-        LeftBound = (!fUpdateLevel)? 0 : Ivy_NodeBalanceFindLeft( vSuper );
-        // find the node that can be shared (if no such node, randomize choice)
-        Ivy_NodeBalancePermute( p, vSuper, LeftBound, Type == IVY_EXOR );
-        // pull out the last two nodes
-        pObj1 = Vec_PtrPop(vSuper);
-        pObj2 = Vec_PtrPop(vSuper);
-        Ivy_NodeBalancePushUniqueOrderByLevel( vSuper, Ivy_Oper(p, pObj1, pObj2, Type) );
-    }
-    return Vec_PtrEntry(vSuper, 0);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the nodes of the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeBalanceCone_rec( Ivy_Obj_t * pRoot, Ivy_Obj_t * pObj, Vec_Ptr_t * vSuper )
-{
-    int RetValue1, RetValue2, i;
-    // check if the node is visited
-    if ( Ivy_Regular(pObj)->fMarkB )
-    {
-        // check if the node occurs in the same polarity
-        for ( i = 0; i < vSuper->nSize; i++ )
-            if ( vSuper->pArray[i] == pObj )
-                return 1;
-        // check if the node is present in the opposite polarity
-        for ( i = 0; i < vSuper->nSize; i++ )
-            if ( vSuper->pArray[i] == Ivy_Not(pObj) )
-                return -1;
-        assert( 0 );
-        return 0;
-    }
-    // if the new node is complemented or a PI, another gate begins
-    if ( pObj != pRoot && (Ivy_IsComplement(pObj) || Ivy_ObjType(pObj) != Ivy_ObjType(pRoot) || Ivy_ObjRefs(pObj) > 1) )
-    {
-        Vec_PtrPush( vSuper, pObj );
-        Ivy_Regular(pObj)->fMarkB = 1;
-        return 0;
-    }
-    assert( !Ivy_IsComplement(pObj) );
-    assert( Ivy_ObjIsNode(pObj) );
-    // go through the branches
-    RetValue1 = Ivy_NodeBalanceCone_rec( pRoot, Ivy_ObjReal( Ivy_ObjChild0(pObj) ), vSuper );
-    RetValue2 = Ivy_NodeBalanceCone_rec( pRoot, Ivy_ObjReal( Ivy_ObjChild1(pObj) ), vSuper );
-    if ( RetValue1 == -1 || RetValue2 == -1 )
-        return -1;
-    // return 1 if at least one branch has a duplicate
-    return RetValue1 || RetValue2;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the nodes of the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Ivy_NodeBalanceCone( Ivy_Obj_t * pObj, Vec_Vec_t * vStore, int Level )
-{
-    Vec_Ptr_t * vNodes;
-    int RetValue, i;
-    assert( !Ivy_IsComplement(pObj) );
-    // extend the storage
-    if ( Vec_VecSize( vStore ) <= Level )
-        Vec_VecPush( vStore, Level, 0 );
-    // get the temporary array of nodes
-    vNodes = Vec_VecEntry( vStore, Level );
-    Vec_PtrClear( vNodes );
-    // collect the nodes in the implication supergate
-    RetValue = Ivy_NodeBalanceCone_rec( pObj, pObj, vNodes );
-    assert( vNodes->nSize > 1 );
-    // unmark the visited nodes
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Ivy_Regular(pObj)->fMarkB = 0;
-    // if we found the node and its complement in the same implication supergate, 
-    // return empty set of nodes (meaning that we should use constant-0 node)
-    if ( RetValue == -1 )
-        vNodes->nSize = 0;
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Finds the left bound on the next candidate to be paired.]
-
-  Description [The nodes in the array are in the decreasing order of levels. 
-  The last node in the array has the smallest level. By default it would be paired 
-  with the next node on the left. However, it may be possible to pair it with some
-  other node on the left, in such a way that the new node is shared. This procedure
-  finds the index of the left-most node, which can be paired with the last node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeBalanceFindLeft( Vec_Ptr_t * vSuper )
-{
-    Ivy_Obj_t * pObjRight, * pObjLeft;
-    int Current;
-    // if two or less nodes, pair with the first
-    if ( Vec_PtrSize(vSuper) < 3 )
-        return 0;
-    // set the pointer to the one before the last
-    Current = Vec_PtrSize(vSuper) - 2;
-    pObjRight = Vec_PtrEntry( vSuper, Current );
-    // go through the nodes to the left of this one
-    for ( Current--; Current >= 0; Current-- )
-    {
-        // get the next node on the left
-        pObjLeft = Vec_PtrEntry( vSuper, Current );
-        // if the level of this node is different, quit the loop
-        if ( Ivy_Regular(pObjLeft)->Level != Ivy_Regular(pObjRight)->Level )
-            break;
-    }
-    Current++;    
-    // get the node, for which the equality holds
-    pObjLeft = Vec_PtrEntry( vSuper, Current );
-    assert( Ivy_Regular(pObjLeft)->Level == Ivy_Regular(pObjRight)->Level );
-    return Current;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Moves closer to the end the node that is best for sharing.]
-
-  Description [If there is no node with sharing, randomly chooses one of 
-  the legal nodes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeBalancePermute( Ivy_Man_t * p, Vec_Ptr_t * vSuper, int LeftBound, int fExor )
-{
-    Ivy_Obj_t * pObj1, * pObj2, * pObj3, * pGhost;
-    int RightBound, i;
-    // get the right bound
-    RightBound = Vec_PtrSize(vSuper) - 2;
-    assert( LeftBound <= RightBound );
-    if ( LeftBound == RightBound )
-        return;
-    // get the two last nodes
-    pObj1 = Vec_PtrEntry( vSuper, RightBound + 1 );
-    pObj2 = Vec_PtrEntry( vSuper, RightBound     );
-    if ( Ivy_Regular(pObj1) == p->pConst1 || Ivy_Regular(pObj2) == p->pConst1 )
-        return;
-    // find the first node that can be shared
-    for ( i = RightBound; i >= LeftBound; i-- )
-    {
-        pObj3 = Vec_PtrEntry( vSuper, i );
-        if ( Ivy_Regular(pObj3) == p->pConst1 )
-        {
-            Vec_PtrWriteEntry( vSuper, i,          pObj2 );
-            Vec_PtrWriteEntry( vSuper, RightBound, pObj3 );
-            return;
-        }
-        pGhost = Ivy_ObjCreateGhost( p, pObj1, pObj3, fExor? IVY_EXOR : IVY_AND, IVY_INIT_NONE );
-        if ( Ivy_TableLookup( p, pGhost ) )
-        {
-            if ( pObj3 == pObj2 )
-                return;
-            Vec_PtrWriteEntry( vSuper, i,          pObj2 );
-            Vec_PtrWriteEntry( vSuper, RightBound, pObj3 );
-            return;
-        }
-    }
-/*
-    // we did not find the node to share, randomize choice
-    {
-        int Choice = rand() % (RightBound - LeftBound + 1);
-        pObj3 = Vec_PtrEntry( vSuper, LeftBound + Choice );
-        if ( pObj3 == pObj2 )
-            return;
-        Vec_PtrWriteEntry( vSuper, LeftBound + Choice, pObj2 );
-        Vec_PtrWriteEntry( vSuper, RightBound,         pObj3 );
-    }
-*/
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts a new node in the order by levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeBalancePushUniqueOrderByLevel( Vec_Ptr_t * vStore, Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pObj1, * pObj2;
-    int i;
-    if ( Vec_PtrPushUnique(vStore, pObj) )
-        return;
-    // find the p of the node
-    for ( i = vStore->nSize-1; i > 0; i-- )
-    {
-        pObj1 = vStore->pArray[i  ];
-        pObj2 = vStore->pArray[i-1];
-        if ( Ivy_Regular(pObj1)->Level <= Ivy_Regular(pObj2)->Level )
-            break;
-        vStore->pArray[i  ] = pObj2;
-        vStore->pArray[i-1] = pObj1;
-    }
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyCanon.c b/src/aig/ivy/ivyCanon.c
deleted file mode 100644
index 5768b87e..00000000
--- a/src/aig/ivy/ivyCanon.c
+++ /dev/null
@@ -1,144 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyCanon.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Finding canonical form of objects.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyCanon.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static Ivy_Obj_t * Ivy_TableLookupPair_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj0, Ivy_Obj_t * pObj1, int fCompl0, int fCompl1, Ivy_Type_t Type );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the canonical form of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_CanonPair_rec( Ivy_Man_t * p, Ivy_Obj_t * pGhost )
-{
-    Ivy_Obj_t * pResult, * pLat0, * pLat1;
-    Ivy_Init_t Init, Init0, Init1;
-    int fCompl0, fCompl1;
-    Ivy_Type_t Type;
-    assert( Ivy_ObjIsNode(pGhost) );
-    assert( Ivy_ObjIsAnd(pGhost) || (!Ivy_ObjFaninC0(pGhost) && !Ivy_ObjFaninC1(pGhost)) );
-    assert( Ivy_ObjFaninId0(pGhost) != 0 && Ivy_ObjFaninId1(pGhost) != 0 );
-    // consider the case when the pair is canonical
-    if ( !Ivy_ObjIsLatch(Ivy_ObjFanin0(pGhost)) || !Ivy_ObjIsLatch(Ivy_ObjFanin1(pGhost)) )
-    {
-        if ( pResult = Ivy_TableLookup( p, pGhost ) )
-            return pResult;
-        return Ivy_ObjCreate( p, pGhost );
-    }
-    /// remember the latches
-    pLat0 = Ivy_ObjFanin0(pGhost);
-    pLat1 = Ivy_ObjFanin1(pGhost);
-    // remember type and compls
-    Type = Ivy_ObjType(pGhost);
-    fCompl0 = Ivy_ObjFaninC0(pGhost);
-    fCompl1 = Ivy_ObjFaninC1(pGhost);
-    // call recursively
-    pResult = Ivy_Oper( p, Ivy_NotCond(Ivy_ObjFanin0(pLat0), fCompl0), Ivy_NotCond(Ivy_ObjFanin0(pLat1), fCompl1), Type );
-    // build latch on top of this
-    Init0 = Ivy_InitNotCond( Ivy_ObjInit(pLat0), fCompl0 );
-    Init1 = Ivy_InitNotCond( Ivy_ObjInit(pLat1), fCompl1 );
-    Init  = (Type == IVY_AND)? Ivy_InitAnd(Init0, Init1) : Ivy_InitExor(Init0, Init1);
-    return Ivy_Latch( p, pResult, Init );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the canonical form of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_CanonAnd( Ivy_Man_t * p, Ivy_Obj_t * pObj0, Ivy_Obj_t * pObj1 )
-{
-    Ivy_Obj_t * pGhost, * pResult;
-    pGhost = Ivy_ObjCreateGhost( p, pObj0, pObj1, IVY_AND, IVY_INIT_NONE );
-    pResult = Ivy_CanonPair_rec( p, pGhost );
-    return pResult;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the canonical form of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_CanonExor( Ivy_Man_t * p, Ivy_Obj_t * pObj0, Ivy_Obj_t * pObj1 )
-{
-    Ivy_Obj_t * pGhost, * pResult;
-    int fCompl = Ivy_IsComplement(pObj0) ^ Ivy_IsComplement(pObj1);
-    pObj0 = Ivy_Regular(pObj0);
-    pObj1 = Ivy_Regular(pObj1);
-    pGhost = Ivy_ObjCreateGhost( p, pObj0, pObj1, IVY_EXOR, IVY_INIT_NONE );
-    pResult = Ivy_CanonPair_rec( p, pGhost );
-    return Ivy_NotCond( pResult, fCompl );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the canonical form of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_CanonLatch( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Init_t Init )
-{
-    Ivy_Obj_t * pGhost, * pResult;
-    int fCompl = Ivy_IsComplement(pObj);
-    pObj = Ivy_Regular(pObj);
-    pGhost = Ivy_ObjCreateGhost( p, pObj, NULL, IVY_LATCH, Ivy_InitNotCond(Init, fCompl) );
-    pResult = Ivy_TableLookup( p, pGhost );
-    if ( pResult == NULL )
-        pResult = Ivy_ObjCreate( p, pGhost );
-    return Ivy_NotCond( pResult, fCompl );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyCheck.c b/src/aig/ivy/ivyCheck.c
deleted file mode 100644
index 55448f19..00000000
--- a/src/aig/ivy/ivyCheck.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyCheck.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [AIG checking procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyCheck.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Checks the consistency of the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManCheck( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj, * pObj2;
-    int i;
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        // skip deleted nodes
-        if ( Ivy_ObjId(pObj) != i )
-        {
-            printf( "Ivy_ManCheck: Node with ID %d is listed as number %d in the array of objects.\n", pObj->Id, i );
-            return 0;
-        }
-        // consider the constant node and PIs
-        if ( i == 0 || Ivy_ObjIsPi(pObj) )
-        {
-            if ( Ivy_ObjFaninId0(pObj) || Ivy_ObjFaninId1(pObj) || Ivy_ObjLevel(pObj) )
-            {
-                printf( "Ivy_ManCheck: The AIG has non-standard constant or PI node with ID \"%d\".\n", pObj->Id );
-                return 0;
-            }
-            continue;
-        }
-        if ( Ivy_ObjIsPo(pObj) )
-        {
-            if ( Ivy_ObjFaninId1(pObj) )
-            {
-                printf( "Ivy_ManCheck: The AIG has non-standard PO node with ID \"%d\".\n", pObj->Id );
-                return 0;
-            }
-            continue;
-        }
-        if ( Ivy_ObjIsBuf(pObj) )
-        {
-            if ( Ivy_ObjFanin1(pObj) )
-            {
-                printf( "Ivy_ManCheck: The buffer with ID \"%d\" contains second fanin.\n", pObj->Id );
-                return 0;
-            }
-            continue;
-        }
-        if ( Ivy_ObjIsLatch(pObj) )
-        {
-            if ( Ivy_ObjFanin1(pObj) )
-            {
-                printf( "Ivy_ManCheck: The latch with ID \"%d\" contains second fanin.\n", pObj->Id );
-                return 0;
-            }
-            if ( Ivy_ObjInit(pObj) == IVY_INIT_NONE )
-            {
-                printf( "Ivy_ManCheck: The latch with ID \"%d\" does not have initial state.\n", pObj->Id );
-                return 0;
-            }
-            pObj2 = Ivy_TableLookup( p, pObj );
-            if ( pObj2 != pObj )
-                printf( "Ivy_ManCheck: Latch with ID \"%d\" is not in the structural hashing table.\n", pObj->Id );
-                continue;
-        }
-        // consider the AND node
-        if ( !Ivy_ObjFanin0(pObj) || !Ivy_ObjFanin1(pObj) )
-        {
-            printf( "Ivy_ManCheck: The AIG has internal node \"%d\" with a NULL fanin.\n", pObj->Id );
-            return 0;
-        }
-        if ( Ivy_ObjFaninId0(pObj) >= Ivy_ObjFaninId1(pObj) )
-        {
-            printf( "Ivy_ManCheck: The AIG has node \"%d\" with a wrong ordering of fanins.\n", pObj->Id );
-            return 0;
-        }
-        if ( Ivy_ObjLevel(pObj) != Ivy_ObjLevelNew(pObj) )
-            printf( "Ivy_ManCheck: Node with ID \"%d\" has level %d but should have level %d.\n", pObj->Id, Ivy_ObjLevel(pObj), Ivy_ObjLevelNew(pObj) );
-        pObj2 = Ivy_TableLookup( p, pObj );
-        if ( pObj2 != pObj )
-            printf( "Ivy_ManCheck: Node with ID \"%d\" is not in the structural hashing table.\n", pObj->Id );
-        if ( Ivy_ObjRefs(pObj) == 0 )
-            printf( "Ivy_ManCheck: Node with ID \"%d\" has no fanouts.\n", pObj->Id );
-        // check fanouts
-        if ( p->fFanout && Ivy_ObjRefs(pObj) != Ivy_ObjFanoutNum(p, pObj) )
-            printf( "Ivy_ManCheck: Node with ID \"%d\" has mismatch between the number of fanouts and refs.\n", pObj->Id );
-    }
-    // count the number of nodes in the table
-    if ( Ivy_TableCountEntries(p) != Ivy_ManAndNum(p) + Ivy_ManExorNum(p) + Ivy_ManLatchNum(p) )
-    {
-        printf( "Ivy_ManCheck: The number of nodes in the structural hashing table is wrong.\n" );
-        return 0;
-    }
-//    if ( !Ivy_ManCheckFanouts(p) )
-//        return 0;
-    if ( !Ivy_ManIsAcyclic(p) )
-        return 0;
-    return 1; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Verifies the fanouts.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManCheckFanoutNums( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i, Counter = 0;
-    Ivy_ManForEachObj( p, pObj, i )
-        if ( Ivy_ObjIsNode(pObj) )
-            Counter += (Ivy_ObjRefs(pObj) == 0);
-    if ( Counter )
-        printf( "Sequential AIG has %d dangling nodes.\n", Counter );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Verifies the fanouts.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManCheckFanouts( Ivy_Man_t * p )
-{
-    Vec_Ptr_t * vFanouts;
-    Ivy_Obj_t * pObj, * pFanout, * pFanin;
-    int i, k, RetValue = 1;
-    if ( !p->fFanout )
-        return 1;
-    vFanouts = Vec_PtrAlloc( 100 );
-    // make sure every fanin is a fanout
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        pFanin = Ivy_ObjFanin0(pObj);
-        if ( pFanin == NULL )
-            continue;
-        Ivy_ObjForEachFanout( p, pFanin, vFanouts, pFanout, k )
-            if ( pFanout == pObj )
-                break;
-        if ( k == Vec_PtrSize(vFanouts) )
-        {
-            printf( "Node %d is a fanin of node %d but the fanout is not there.\n", pFanin->Id, pObj->Id );
-            RetValue = 0;
-        }
-
-        pFanin = Ivy_ObjFanin1(pObj);
-        if ( pFanin == NULL )
-            continue;
-        Ivy_ObjForEachFanout( p, pFanin, vFanouts, pFanout, k )
-            if ( pFanout == pObj )
-                break;
-        if ( k == Vec_PtrSize(vFanouts) )
-        {
-            printf( "Node %d is a fanin of node %d but the fanout is not there.\n", pFanin->Id, pObj->Id );
-            RetValue = 0;
-        }
-        // check that the previous fanout has the same fanin
-        if ( pObj->pPrevFan0 )
-        {
-            if ( Ivy_ObjFanin0(pObj->pPrevFan0) != Ivy_ObjFanin0(pObj) && 
-                 Ivy_ObjFanin0(pObj->pPrevFan0) != Ivy_ObjFanin1(pObj) && 
-                 Ivy_ObjFanin1(pObj->pPrevFan0) != Ivy_ObjFanin0(pObj) && 
-                 Ivy_ObjFanin1(pObj->pPrevFan0) != Ivy_ObjFanin1(pObj) )
-            {
-                printf( "Node %d has prev %d without common fanin.\n", pObj->Id, pObj->pPrevFan0->Id );
-                RetValue = 0;
-            }
-        }
-        // check that the previous fanout has the same fanin
-        if ( pObj->pPrevFan1 )
-        {
-            if ( Ivy_ObjFanin0(pObj->pPrevFan1) != Ivy_ObjFanin0(pObj) && 
-                 Ivy_ObjFanin0(pObj->pPrevFan1) != Ivy_ObjFanin1(pObj) && 
-                 Ivy_ObjFanin1(pObj->pPrevFan1) != Ivy_ObjFanin0(pObj) && 
-                 Ivy_ObjFanin1(pObj->pPrevFan1) != Ivy_ObjFanin1(pObj) )
-            {
-                printf( "Node %d has prev %d without common fanin.\n", pObj->Id, pObj->pPrevFan1->Id );
-                RetValue = 0;
-            }
-        }
-    }
-    // make sure every fanout is a fanin
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        Ivy_ObjForEachFanout( p, pObj, vFanouts, pFanout, k )
-            if ( Ivy_ObjFanin0(pFanout) != pObj && Ivy_ObjFanin1(pFanout) != pObj )
-            {
-                printf( "Node %d is a fanout of node %d but the fanin is not there.\n", pFanout->Id, pObj->Id );
-                RetValue = 0;
-            }
-    }
-    Vec_PtrFree( vFanouts );
-    return RetValue;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks that each choice node has exactly one node with fanouts.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManCheckChoices( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj, * pTemp;
-    int i;
-    Ivy_ManForEachObj( p->pHaig, pObj, i )
-    {
-        if ( Ivy_ObjRefs(pObj) == 0 )
-            continue;
-        // count the number of nodes in the loop
-        assert( !Ivy_IsComplement(pObj->pEquiv) );
-        for ( pTemp = pObj->pEquiv; pTemp && pTemp != pObj; pTemp = Ivy_Regular(pTemp->pEquiv) )
-            if ( Ivy_ObjRefs(pTemp) > 1 )
-                printf( "Node %d has member %d in its equiv class with %d fanouts.\n", pObj->Id, pTemp->Id, Ivy_ObjRefs(pTemp) );
-    }
-    return 1;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyCut.c b/src/aig/ivy/ivyCut.c
deleted file mode 100644
index e257d8a6..00000000
--- a/src/aig/ivy/ivyCut.c
+++ /dev/null
@@ -1,989 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyCut.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Computes reconvergence driven sequential cut.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyCut.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static inline int Ivy_NodeCutHashValue( int NodeId )  { return 1 << (NodeId % 31); }
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Evaluate the cost of removing the node from the set of leaves.]
-
-  Description [Returns the number of new leaves that will be brought in.
-  Returns large number if the node cannot be removed from the set of leaves.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_NodeGetLeafCostOne( Ivy_Man_t * p, int Leaf, Vec_Int_t * vInside )
-{
-    Ivy_Obj_t * pNode;
-    int nLatches, FaninLeaf, Cost;
-    // make sure leaf is not a contant node
-    assert( Leaf > 0 ); 
-    // get the node
-    pNode = Ivy_ManObj( p, Ivy_LeafId(Leaf) );
-    // cannot expand over the PI node
-    if ( Ivy_ObjIsPi(pNode) || Ivy_ObjIsConst1(pNode) )
-        return 999;
-    // get the number of latches
-    nLatches = Ivy_LeafLat(Leaf) + Ivy_ObjIsLatch(pNode);
-    if ( nLatches > 15 )
-        return 999;
-    // get the first fanin
-    FaninLeaf = Ivy_LeafCreate( Ivy_ObjFaninId0(pNode), nLatches );
-    Cost = FaninLeaf && (Vec_IntFind(vInside, FaninLeaf) == -1);
-    // quit if this is the one fanin node
-    if ( Ivy_ObjIsLatch(pNode) || Ivy_ObjIsBuf(pNode) )
-        return Cost;
-    assert( Ivy_ObjIsNode(pNode) );
-    // get the second fanin
-    FaninLeaf = Ivy_LeafCreate( Ivy_ObjFaninId1(pNode), nLatches );
-    Cost += FaninLeaf && (Vec_IntFind(vInside, FaninLeaf) == -1);
-    return Cost;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Builds reconvergence-driven cut by changing one leaf at a time.]
-
-  Description [This procedure looks at the current leaves and tries to change 
-  one leaf at a time in such a way that the cut grows as little as possible.
-  In evaluating the fanins, this procedure looks only at their immediate 
-  predecessors (this is why it is called a one-level construction procedure).]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManSeqFindCut_int( Ivy_Man_t * p, Vec_Int_t * vFront, Vec_Int_t * vInside, int nSizeLimit )
-{
-    Ivy_Obj_t * pNode;
-    int CostBest, CostCur, Leaf, LeafBest, Next, nLatches, i;
-    int LeavesBest[10];
-    int Counter;
-
-    // add random selection of the best fanin!!!
-
-    // find the best fanin
-    CostBest = 99;
-    LeafBest = -1;
-    Counter = -1;
-//printf( "Evaluating fanins of the cut:\n" );
-    Vec_IntForEachEntry( vFront, Leaf, i )
-    {
-        CostCur = Ivy_NodeGetLeafCostOne( p, Leaf, vInside );
-//printf( "    Fanin %s has cost %d.\n", Ivy_ObjName(pNode), CostCur );
-        if ( CostBest > CostCur )
-        {
-            CostBest = CostCur;
-            LeafBest = Leaf;
-            LeavesBest[0] = Leaf;
-            Counter = 1;
-        }
-        else if ( CostBest == CostCur )
-            LeavesBest[Counter++] = Leaf;
-
-        if ( CostBest <= 1 ) // can be if ( CostBest <= 1 )
-            break;
-    }
-    if ( CostBest == 99 )
-        return 0;
-//        return Ivy_NodeBuildCutLevelTwo_int( vInside, vFront, nFaninLimit );
-
-    assert( CostBest < 3 );
-    if ( Vec_IntSize(vFront) - 1 + CostBest > nSizeLimit )
-        return 0;
-//        return Ivy_NodeBuildCutLevelTwo_int( vInside, vFront, nFaninLimit );
-
-    assert( Counter > 0 );
-printf( "%d", Counter );
-
-    LeafBest = LeavesBest[rand() % Counter];
-
-    // remove the node from the array
-    assert( LeafBest >= 0 );
-    Vec_IntRemove( vFront, LeafBest );
-//printf( "Removing fanin %s.\n", Ivy_ObjName(pNode) );
-
-    // get the node and its latches
-    pNode = Ivy_ManObj( p, Ivy_LeafId(LeafBest) );
-    nLatches = Ivy_LeafLat(LeafBest) + Ivy_ObjIsLatch(pNode);
-    assert( Ivy_ObjIsNode(pNode) || Ivy_ObjIsLatch(pNode) || Ivy_ObjIsBuf(pNode) );
-
-    // add the left child to the fanins
-    Next = Ivy_LeafCreate( Ivy_ObjFaninId0(pNode), nLatches );
-    if ( Next && Vec_IntFind(vInside, Next) == -1 )
-    {
-//printf( "Adding fanin %s.\n", Ivy_ObjName(pNext) );
-        Vec_IntPush( vFront, Next );
-        Vec_IntPush( vInside, Next );
-    }
-
-    // quit if this is the one fanin node
-    if ( Ivy_ObjIsLatch(pNode) || Ivy_ObjIsBuf(pNode) )
-        return 1;
-    assert( Ivy_ObjIsNode(pNode) );
-
-    // add the right child to the fanins
-    Next = Ivy_LeafCreate( Ivy_ObjFaninId1(pNode), nLatches );
-    if ( Next && Vec_IntFind(vInside, Next) == -1 )
-    {
-//printf( "Adding fanin %s.\n", Ivy_ObjName(pNext) );
-        Vec_IntPush( vFront, Next );
-        Vec_IntPush( vInside, Next );
-    }
-    assert( Vec_IntSize(vFront) <= nSizeLimit );
-    // keep doing this
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes one sequential cut of the given size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManSeqFindCut( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Vec_Int_t * vFront, Vec_Int_t * vInside, int nSize )
-{
-    assert( !Ivy_IsComplement(pRoot) );
-    assert( Ivy_ObjIsNode(pRoot) );
-    assert( Ivy_ObjFaninId0(pRoot) );
-    assert( Ivy_ObjFaninId1(pRoot) );
-
-    // start the cut 
-    Vec_IntClear( vFront );
-    Vec_IntPush( vFront, Ivy_LeafCreate(Ivy_ObjFaninId0(pRoot), 0) );
-    Vec_IntPush( vFront, Ivy_LeafCreate(Ivy_ObjFaninId1(pRoot), 0) );
-
-    // start the visited nodes
-    Vec_IntClear( vInside );
-    Vec_IntPush( vInside, Ivy_LeafCreate(pRoot->Id, 0) );
-    Vec_IntPush( vInside, Ivy_LeafCreate(Ivy_ObjFaninId0(pRoot), 0) );
-    Vec_IntPush( vInside, Ivy_LeafCreate(Ivy_ObjFaninId1(pRoot), 0) );
-
-    // compute the cut
-    while ( Ivy_ManSeqFindCut_int( p, vFront, vInside, nSize ) );
-    assert( Vec_IntSize(vFront) <= nSize );
-}
-
-
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Computing Boolean cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManFindBoolCut_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vVolume, Ivy_Obj_t * pPivot )
-{
-    int RetValue0, RetValue1;
-    if ( pObj == pPivot )
-    {
-        Vec_PtrPushUnique( vLeaves, pObj );
-        Vec_PtrPushUnique( vVolume, pObj );
-        return 1;        
-    }
-    if ( pObj->fMarkA )
-        return 0;
-
-//    assert( !Ivy_ObjIsCi(pObj) );
-    if ( Ivy_ObjIsCi(pObj) )
-        return 0;
-
-    if ( Ivy_ObjIsBuf(pObj) )
-    {
-        RetValue0 = Ivy_ManFindBoolCut_rec( p, Ivy_ObjFanin0(pObj), vLeaves, vVolume, pPivot );
-        if ( !RetValue0 )
-            return 0;
-        Vec_PtrPushUnique( vVolume, pObj );
-        return 1;
-    }
-    assert( Ivy_ObjIsNode(pObj) );
-    RetValue0 = Ivy_ManFindBoolCut_rec( p, Ivy_ObjFanin0(pObj), vLeaves, vVolume, pPivot );
-    RetValue1 = Ivy_ManFindBoolCut_rec( p, Ivy_ObjFanin1(pObj), vLeaves, vVolume, pPivot );
-    if ( !RetValue0 && !RetValue1 )
-        return 0;
-    // add new leaves
-    if ( !RetValue0 )
-    {
-        Vec_PtrPushUnique( vLeaves, Ivy_ObjFanin0(pObj) );
-        Vec_PtrPushUnique( vVolume, Ivy_ObjFanin0(pObj) );
-    }
-    if ( !RetValue1 )
-    {
-        Vec_PtrPushUnique( vLeaves, Ivy_ObjFanin1(pObj) );
-        Vec_PtrPushUnique( vVolume, Ivy_ObjFanin1(pObj) );
-    }
-    Vec_PtrPushUnique( vVolume, pObj );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the cost of one node (how many new nodes are added.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManFindBoolCutCost( Ivy_Obj_t * pObj )
-{
-    int Cost;
-    // make sure the node is in the construction zone
-    assert( pObj->fMarkA == 1 );  
-    // cannot expand over the PI node
-    if ( Ivy_ObjIsCi(pObj) )
-        return 999;
-    // always expand over the buffer
-    if ( Ivy_ObjIsBuf(pObj) )
-        return !Ivy_ObjFanin0(pObj)->fMarkA;
-    // get the cost of the cone
-    Cost = (!Ivy_ObjFanin0(pObj)->fMarkA) + (!Ivy_ObjFanin1(pObj)->fMarkA);
-    // return the number of nodes to be added to the leaves if this node is removed
-    return Cost;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computing Boolean cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManFindBoolCut( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Vec_Ptr_t * vFront, Vec_Ptr_t * vVolume, Vec_Ptr_t * vLeaves )
-{
-    Ivy_Obj_t * pObj, * pFaninC, * pFanin0, * pFanin1, * pPivot;
-    int RetValue, LevelLimit, Lev, k;
-    assert( !Ivy_IsComplement(pRoot) );
-    // clear the frontier and collect the nodes
-    Vec_PtrClear( vFront );
-    Vec_PtrClear( vVolume );
-    if ( Ivy_ObjIsMuxType(pRoot) )
-        pFaninC = Ivy_ObjRecognizeMux( pRoot, &pFanin0, &pFanin1 );
-    else
-    {
-        pFaninC = NULL;
-        pFanin0 = Ivy_ObjFanin0(pRoot);
-        pFanin1 = Ivy_ObjFanin1(pRoot); 
-    }
-    // start cone A
-    pFanin0->fMarkA = 1;
-    Vec_PtrPush( vFront, pFanin0 );
-    Vec_PtrPush( vVolume, pFanin0 );
-    // start cone B
-    pFanin1->fMarkB = 1;
-    Vec_PtrPush( vFront, pFanin1 );
-    Vec_PtrPush( vVolume, pFanin1 );
-    // iteratively expand until the common node (pPivot) is found or limit is reached
-    assert( Ivy_ObjLevel(pRoot) == Ivy_ObjLevelNew(pRoot) );
-    pPivot = NULL;
-    LevelLimit = IVY_MAX( Ivy_ObjLevel(pRoot) - 10, 1 );
-    for ( Lev = Ivy_ObjLevel(pRoot) - 1; Lev >= LevelLimit; Lev-- )
-    {
-        while ( 1 )
-        {
-            // find the next node to expand on this level
-            Vec_PtrForEachEntry( vFront, pObj, k )
-                if ( (int)pObj->Level == Lev )
-                    break;
-            if ( k == Vec_PtrSize(vFront) )
-                break;
-            assert( (int)pObj->Level <= Lev );
-            assert( pObj->fMarkA ^ pObj->fMarkB );
-            // remove the old node
-            Vec_PtrRemove( vFront, pObj );
-
-            // expand this node
-            pFanin0 = Ivy_ObjFanin0(pObj);
-            if ( !pFanin0->fMarkA && !pFanin0->fMarkB )
-            {
-                Vec_PtrPush( vFront, pFanin0 );
-                Vec_PtrPush( vVolume, pFanin0 );
-            }
-            // mark the new nodes
-            if ( pObj->fMarkA )
-                pFanin0->fMarkA = 1; 
-            if ( pObj->fMarkB )
-                pFanin0->fMarkB = 1; 
-
-            if ( Ivy_ObjIsBuf(pObj) )
-            {
-                if ( pFanin0->fMarkA && pFanin0->fMarkB )
-                {
-                    pPivot = pFanin0;
-                    break;
-                }
-                continue;
-            }
-
-            // expand this node
-            pFanin1 = Ivy_ObjFanin1(pObj); 
-            if ( !pFanin1->fMarkA && !pFanin1->fMarkB )
-            {
-                Vec_PtrPush( vFront, pFanin1 );
-                Vec_PtrPush( vVolume, pFanin1 );
-            }
-            // mark the new nodes
-            if ( pObj->fMarkA )
-                pFanin1->fMarkA = 1; 
-            if ( pObj->fMarkB )
-                pFanin1->fMarkB = 1; 
-
-            // consider if it is time to quit
-            if ( pFanin0->fMarkA && pFanin0->fMarkB )
-            {
-                pPivot = pFanin0;
-                break;
-            }
-            if ( pFanin1->fMarkA && pFanin1->fMarkB )
-            {
-                pPivot = pFanin1;
-                break;
-            }
-        }
-        if ( pPivot != NULL )
-            break;
-    }
-    if ( pPivot == NULL )
-        return 0;
-    // if the MUX control is defined, it should not be
-    if ( pFaninC && !pFaninC->fMarkA && !pFaninC->fMarkB )
-        Vec_PtrPush( vFront, pFaninC );
-    // clean the markings
-    Vec_PtrForEachEntry( vVolume, pObj, k )
-        pObj->fMarkA = pObj->fMarkB = 0;
-
-    // mark the nodes on the frontier (including the pivot)
-    Vec_PtrForEachEntry( vFront, pObj, k )
-        pObj->fMarkA = 1;
-    // cut exists, collect all the nodes on the shortest path to the pivot
-    Vec_PtrClear( vLeaves );
-    Vec_PtrClear( vVolume );
-    RetValue = Ivy_ManFindBoolCut_rec( p, pRoot, vLeaves, vVolume, pPivot );
-    assert( RetValue == 1 );
-    // unmark the nodes on the frontier (including the pivot)
-    Vec_PtrForEachEntry( vFront, pObj, k )
-        pObj->fMarkA = 0;
-
-    // mark the nodes in the volume
-    Vec_PtrForEachEntry( vVolume, pObj, k )
-        pObj->fMarkA = 1;
-    // expand the cut without increasing its size
-    while ( 1 )
-    {
-        Vec_PtrForEachEntry( vLeaves, pObj, k )
-            if ( Ivy_ManFindBoolCutCost(pObj) < 2 )
-                break;
-        if ( k == Vec_PtrSize(vLeaves) )
-            break;
-        // the node can be expanded
-        // remove the old node
-        Vec_PtrRemove( vLeaves, pObj );
-        // expand this node
-        pFanin0 = Ivy_ObjFanin0(pObj);
-        if ( !pFanin0->fMarkA )
-        {
-            pFanin0->fMarkA = 1;
-            Vec_PtrPush( vVolume, pFanin0 );
-            Vec_PtrPush( vLeaves, pFanin0 );
-        }
-        if ( Ivy_ObjIsBuf(pObj) )
-            continue;
-        // expand this node
-        pFanin1 = Ivy_ObjFanin1(pObj);
-        if ( !pFanin1->fMarkA )
-        {
-            pFanin1->fMarkA = 1;
-            Vec_PtrPush( vVolume, pFanin1 );
-            Vec_PtrPush( vLeaves, pFanin1 );
-        }        
-    }
-    // unmark the nodes in the volume
-    Vec_PtrForEachEntry( vVolume, pObj, k )
-        pObj->fMarkA = 0;
-    return 1;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManTestCutsBool( Ivy_Man_t * p )
-{
-    Vec_Ptr_t * vFront, * vVolume, * vLeaves;
-    Ivy_Obj_t * pObj;//, * pTemp;
-    int i, RetValue;//, k;
-    vFront = Vec_PtrAlloc( 100 );
-    vVolume = Vec_PtrAlloc( 100 );
-    vLeaves = Vec_PtrAlloc( 100 );
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        if ( !Ivy_ObjIsNode(pObj) )
-            continue;
-        if ( Ivy_ObjIsMuxType(pObj) )
-        {
-            printf( "m" );
-            continue;
-        }
-        if ( Ivy_ObjIsExor(pObj) )
-            printf( "x" );
-        RetValue = Ivy_ManFindBoolCut( p, pObj, vFront, vVolume, vLeaves );
-        if ( RetValue == 0 )
-            printf( "- " );
-        else
-            printf( "%d ", Vec_PtrSize(vLeaves) );
-/*        
-        printf( "( " );
-        Vec_PtrForEachEntry( vFront, pTemp, k )
-            printf( "%d ", Ivy_ObjRefs(Ivy_Regular(pTemp)) );
-        printf( ")\n" );
-*/
-    }
-    printf( "\n" );
-    Vec_PtrFree( vFront );
-    Vec_PtrFree( vVolume );
-    Vec_PtrFree( vLeaves );
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Find the hash value of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Ivy_NodeCutHash( Ivy_Cut_t * pCut )
-{
-    int i;
-//    for ( i = 1; i < pCut->nSize; i++ )
-//        assert( pCut->pArray[i-1] < pCut->pArray[i] );
-    pCut->uHash = 0;
-    for ( i = 0; i < pCut->nSize; i++ )
-        pCut->uHash |= (1 << (pCut->pArray[i] % 31));
-    return pCut->uHash;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes one node to the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Ivy_NodeCutShrink( Ivy_Cut_t * pCut, int iOld )
-{
-    int i, k;
-    for ( i = k = 0; i < pCut->nSize; i++ )
-        if ( pCut->pArray[i] != iOld )
-            pCut->pArray[k++] = pCut->pArray[i];
-    assert( k == pCut->nSize - 1 );
-    pCut->nSize--;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one node to the cut.]
-
-  Description [Returns 1 if the cuts is still okay.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_NodeCutExtend( Ivy_Cut_t * pCut, int iNew )
-{
-    int i;
-    for ( i = 0; i < pCut->nSize; i++ )
-        if ( pCut->pArray[i] == iNew )
-            return 1;
-    // check if there is room
-    if ( pCut->nSize == pCut->nSizeMax )
-        return 0;
-    // add the new one
-    for ( i = pCut->nSize - 1; i >= 0; i-- )
-        if ( pCut->pArray[i] > iNew )
-            pCut->pArray[i+1] = pCut->pArray[i];
-        else
-        {
-            assert( pCut->pArray[i] < iNew );
-            break;
-        }
-    pCut->pArray[i+1] = iNew;
-    pCut->nSize++;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the cut can be constructed; 0 otherwise.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_NodeCutPrescreen( Ivy_Cut_t * pCut, int Id0, int Id1 )
-{
-    int i;
-    if ( pCut->nSize < pCut->nSizeMax )
-        return 1;
-    for ( i = 0; i < pCut->nSize; i++ )
-        if ( pCut->pArray[i] == Id0 || pCut->pArray[i] == Id1 )
-            return 1;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives new cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_NodeCutDeriveNew( Ivy_Cut_t * pCut, Ivy_Cut_t * pCutNew, int IdOld, int IdNew0, int IdNew1 )
-{
-    unsigned uHash = 0;
-    int i, k; 
-    assert( pCut->nSize > 0 );
-    assert( IdNew0 < IdNew1 );
-    for ( i = k = 0; i < pCut->nSize; i++ )
-    {
-        if ( pCut->pArray[i] == IdOld )
-            continue;
-        if ( IdNew0 <= pCut->pArray[i] )
-        {
-            if ( IdNew0 < pCut->pArray[i] )
-            {
-                pCutNew->pArray[ k++ ] = IdNew0;
-                uHash |= Ivy_NodeCutHashValue( IdNew0 );
-            }
-            IdNew0 = 0x7FFFFFFF;
-        }
-        if ( IdNew1 <= pCut->pArray[i] )
-        {
-            if ( IdNew1 < pCut->pArray[i] )
-            {
-                pCutNew->pArray[ k++ ] = IdNew1;
-                uHash |= Ivy_NodeCutHashValue( IdNew1 );
-            }
-            IdNew1 = 0x7FFFFFFF;
-        }
-        pCutNew->pArray[ k++ ] = pCut->pArray[i];
-        uHash |= Ivy_NodeCutHashValue( pCut->pArray[i] );
-    }
-    if ( IdNew0 < 0x7FFFFFFF )
-    {
-        pCutNew->pArray[ k++ ] = IdNew0;
-        uHash |= Ivy_NodeCutHashValue( IdNew0 );
-    }
-    if ( IdNew1 < 0x7FFFFFFF )
-    {
-        pCutNew->pArray[ k++ ] = IdNew1;
-        uHash |= Ivy_NodeCutHashValue( IdNew1 );
-    }
-    pCutNew->nSize = k;
-    pCutNew->uHash = uHash;
-    assert( pCutNew->nSize <= pCut->nSizeMax );
-//    for ( i = 1; i < pCutNew->nSize; i++ )
-//        assert( pCutNew->pArray[i-1] < pCutNew->pArray[i] );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check if the cut exists.]
-
-  Description [Returns 1 if the cut exists.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeCutFindOrAdd( Ivy_Store_t * pCutStore, Ivy_Cut_t * pCutNew )
-{
-    Ivy_Cut_t * pCut;
-    int i, k;
-    assert( pCutNew->uHash );
-    // try to find the cut
-    for ( i = 0; i < pCutStore->nCuts; i++ )
-    {
-        pCut = pCutStore->pCuts + i;
-        if ( pCut->uHash == pCutNew->uHash && pCut->nSize == pCutNew->nSize )
-        {
-            for ( k = 0; k < pCutNew->nSize; k++ )
-                if ( pCut->pArray[k] != pCutNew->pArray[k] )
-                    break;
-            if ( k == pCutNew->nSize )
-                return 1;
-        }
-    }
-    assert( pCutStore->nCuts < pCutStore->nCutsMax );
-    // add the cut
-    pCut = pCutStore->pCuts + pCutStore->nCuts++;
-    *pCut = *pCutNew;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if pDom is contained in pCut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_CutCheckDominance( Ivy_Cut_t * pDom, Ivy_Cut_t * pCut )
-{
-    int i, k;
-    for ( i = 0; i < pDom->nSize; i++ )
-    {
-        for ( k = 0; k < pCut->nSize; k++ )
-            if ( pDom->pArray[i] == pCut->pArray[k] )
-                break;
-        if ( k == pCut->nSize ) // node i in pDom is not contained in pCut
-            return 0;
-    }
-    // every node in pDom is contained in pCut
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check if the cut exists.]
-
-  Description [Returns 1 if the cut exists.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeCutFindOrAddFilter( Ivy_Store_t * pCutStore, Ivy_Cut_t * pCutNew )
-{
-    Ivy_Cut_t * pCut;
-    int i, k;
-    assert( pCutNew->uHash );
-    // try to find the cut
-    for ( i = 0; i < pCutStore->nCuts; i++ )
-    {
-        pCut = pCutStore->pCuts + i;
-        if ( pCut->nSize == 0 )
-            continue;
-        if ( pCut->nSize == pCutNew->nSize )
-        {
-            if ( pCut->uHash == pCutNew->uHash )
-            {
-                for ( k = 0; k < pCutNew->nSize; k++ )
-                    if ( pCut->pArray[k] != pCutNew->pArray[k] )
-                        break;
-                if ( k == pCutNew->nSize )
-                    return 1;
-            }
-            continue;
-        }
-        if ( pCut->nSize < pCutNew->nSize )
-        {
-            // skip the non-contained cuts
-            if ( (pCut->uHash & pCutNew->uHash) != pCut->uHash )
-                continue;
-            // check containment seriously
-            if ( Ivy_CutCheckDominance( pCut, pCutNew ) )
-                return 1;
-            continue;
-        }
-        // check potential containment of other cut
-
-        // skip the non-contained cuts
-        if ( (pCut->uHash & pCutNew->uHash) != pCutNew->uHash )
-            continue;
-        // check containment seriously
-        if ( Ivy_CutCheckDominance( pCutNew, pCut ) )
-        {
-            // remove the current cut
-//            --pCutStore->nCuts;
-//            for ( k = i; k < pCutStore->nCuts; k++ )
-//                pCutStore->pCuts[k] = pCutStore->pCuts[k+1];
-//            i--;
-            pCut->nSize = 0;
-        }
-    }
-    assert( pCutStore->nCuts < pCutStore->nCutsMax );
-    // add the cut
-    pCut = pCutStore->pCuts + pCutStore->nCuts++;
-    *pCut = *pCutNew;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Print the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeCompactCuts( Ivy_Store_t * pCutStore )
-{
-    Ivy_Cut_t * pCut;
-    int i, k;
-    for ( i = k = 0; i < pCutStore->nCuts; i++ )
-    {
-        pCut = pCutStore->pCuts + i;
-        if ( pCut->nSize == 0 )
-            continue;
-        pCutStore->pCuts[k++] = *pCut;
-    }
-    pCutStore->nCuts = k;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Print the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodePrintCut( Ivy_Cut_t * pCut )
-{
-    int i;
-    assert( pCut->nSize > 0 );
-    printf( "%d : {", pCut->nSize );
-    for ( i = 0; i < pCut->nSize; i++ )
-        printf( " %d", pCut->pArray[i] );
-    printf( " }\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodePrintCuts( Ivy_Store_t * pCutStore )
-{
-    int i;
-    printf( "Node %d\n", pCutStore->pCuts[0].pArray[0] );
-    for ( i = 0; i < pCutStore->nCuts; i++ )
-        Ivy_NodePrintCut( pCutStore->pCuts + i );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Ivy_Obj_t * Ivy_ObjRealFanin( Ivy_Obj_t * pObj )
-{
-    if ( !Ivy_ObjIsBuf(pObj) )
-        return pObj;
-    return Ivy_ObjRealFanin( Ivy_ObjFanin0(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Store_t * Ivy_NodeFindCutsAll( Ivy_Man_t * p, Ivy_Obj_t * pObj, int nLeaves )
-{
-    static Ivy_Store_t CutStore, * pCutStore = &CutStore;
-    Ivy_Cut_t CutNew, * pCutNew = &CutNew, * pCut;
-    Ivy_Obj_t * pLeaf;
-    int i, k, iLeaf0, iLeaf1;
-
-    assert( nLeaves <= IVY_CUT_INPUT );
-
-    // start the structure
-    pCutStore->nCuts = 0;
-    pCutStore->nCutsMax = IVY_CUT_LIMIT;
-    // start the trivial cut
-    pCutNew->uHash = 0;
-    pCutNew->nSize = 1;
-    pCutNew->nSizeMax = nLeaves;
-    pCutNew->pArray[0] = pObj->Id;
-    Ivy_NodeCutHash( pCutNew );
-    // add the trivial cut
-    Ivy_NodeCutFindOrAdd( pCutStore, pCutNew );
-    assert( pCutStore->nCuts == 1 );
-
-    // explore the cuts
-    for ( i = 0; i < pCutStore->nCuts; i++ )
-    {
-        // expand this cut
-        pCut = pCutStore->pCuts + i;
-        if ( pCut->nSize == 0 )
-            continue;
-        for ( k = 0; k < pCut->nSize; k++ )
-        {
-            pLeaf = Ivy_ManObj( p, pCut->pArray[k] );
-            if ( Ivy_ObjIsCi(pLeaf) )
-                continue;
-/*
-            *pCutNew = *pCut;
-            Ivy_NodeCutShrink( pCutNew, pLeaf->Id );
-            if ( !Ivy_NodeCutExtend( pCutNew, Ivy_ObjFaninId0(pLeaf) ) )
-                continue;
-            if ( Ivy_ObjIsNode(pLeaf) && !Ivy_NodeCutExtend( pCutNew, Ivy_ObjFaninId1(pLeaf) ) )
-                continue;
-            Ivy_NodeCutHash( pCutNew );
-*/
-            iLeaf0 = Ivy_ObjId( Ivy_ObjRealFanin(Ivy_ObjFanin0(pLeaf)) );
-            iLeaf1 = Ivy_ObjId( Ivy_ObjRealFanin(Ivy_ObjFanin1(pLeaf)) );
-//            if ( iLeaf0 == iLeaf1 ) // strange situation observed on Jan 18, 2007
-//                continue;
-            if ( !Ivy_NodeCutPrescreen( pCut, iLeaf0, iLeaf1 ) )
-                continue;
-            if ( iLeaf0 > iLeaf1 )
-                Ivy_NodeCutDeriveNew( pCut, pCutNew, pCut->pArray[k], iLeaf1, iLeaf0 );
-            else
-                Ivy_NodeCutDeriveNew( pCut, pCutNew, pCut->pArray[k], iLeaf0, iLeaf1 );
-            Ivy_NodeCutFindOrAddFilter( pCutStore, pCutNew );
-            if ( pCutStore->nCuts == IVY_CUT_LIMIT )
-                break;
-        }
-        if ( pCutStore->nCuts == IVY_CUT_LIMIT )
-            break;
-    }
-    Ivy_NodeCompactCuts( pCutStore );
-//    Ivy_NodePrintCuts( pCutStore );
-    return pCutStore;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManTestCutsAll( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i, nCutsCut, nCutsTotal, nNodeTotal, nNodeOver;
-    int clk = clock();
-    nNodeTotal = nNodeOver = 0;
-    nCutsTotal = -Ivy_ManNodeNum(p);
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        if ( !Ivy_ObjIsNode(pObj) )
-            continue;
-        nCutsCut    = Ivy_NodeFindCutsAll( p, pObj, 5 )->nCuts;
-        nCutsTotal += nCutsCut;
-        nNodeOver  += (nCutsCut == IVY_CUT_LIMIT);
-        nNodeTotal++;
-    }
-    printf( "Total cuts = %6d. Trivial = %6d.   Nodes = %6d. Satur = %6d.  ", 
-        nCutsTotal, Ivy_ManPiNum(p) + Ivy_ManNodeNum(p), nNodeTotal, nNodeOver );
-    PRT( "Time", clock() - clk );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyCutTrav.c b/src/aig/ivy/ivyCutTrav.c
deleted file mode 100644
index ea57c9f5..00000000
--- a/src/aig/ivy/ivyCutTrav.c
+++ /dev/null
@@ -1,473 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyCutTrav.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyCutTrav.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static unsigned * Ivy_NodeCutElementary( Vec_Int_t * vStore, int nWords, int NodeId );
-static void Ivy_NodeComputeVolume( Ivy_Obj_t * pObj, int nNodeLimit, Vec_Ptr_t * vNodes, Vec_Ptr_t * vFront );
-static void Ivy_NodeFindCutsMerge( Vec_Ptr_t * vCuts0, Vec_Ptr_t * vCuts1, Vec_Ptr_t * vCuts, int nLeaves, int nWords, Vec_Int_t * vStore );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Computes cuts for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Store_t * Ivy_NodeFindCutsTravAll( Ivy_Man_t * p, Ivy_Obj_t * pObj, int nLeaves, int nNodeLimit, 
-                                      Vec_Ptr_t * vNodes, Vec_Ptr_t * vFront, Vec_Int_t * vStore, Vec_Vec_t * vBitCuts )
-{
-    static Ivy_Store_t CutStore, * pCutStore = &CutStore;
-    Vec_Ptr_t * vCuts, * vCuts0, * vCuts1;
-    unsigned * pBitCut;
-    Ivy_Obj_t * pLeaf;
-    Ivy_Cut_t * pCut;
-    int i, k, nWords, nNodes;
-
-    assert( nLeaves <= IVY_CUT_INPUT );
-
-    // find the given number of nodes in the TFI
-    Ivy_NodeComputeVolume( pObj, nNodeLimit - 1, vNodes, vFront );
-    nNodes = Vec_PtrSize(vNodes);
-//    assert( nNodes <= nNodeLimit );
-
-    // make sure vBitCuts has enough room
-    Vec_VecExpand( vBitCuts, nNodes-1 );
-    Vec_VecClear( vBitCuts );
-
-    // prepare the memory manager
-    Vec_IntClear( vStore );
-    Vec_IntGrow( vStore, 64000 );
-
-    // set elementary cuts for the leaves
-    nWords = Extra_BitWordNum( nNodes );
-    Vec_PtrForEachEntry( vFront, pLeaf, i )
-    {
-        assert( Ivy_ObjTravId(pLeaf) < nNodes );
-        // get the new bitcut
-        pBitCut = Ivy_NodeCutElementary( vStore, nWords, Ivy_ObjTravId(pLeaf) );
-        // set it as the cut of this leaf
-        Vec_VecPush( vBitCuts, Ivy_ObjTravId(pLeaf), pBitCut );
-    }
-
-    // compute the cuts for each node
-    Vec_PtrForEachEntry( vNodes, pLeaf, i )
-    {
-        // skip the leaves
-        vCuts = Vec_VecEntry( vBitCuts, Ivy_ObjTravId(pLeaf) );
-        if ( Vec_PtrSize(vCuts) > 0 )
-            continue;
-        // add elementary cut
-        pBitCut = Ivy_NodeCutElementary( vStore, nWords, Ivy_ObjTravId(pLeaf) );
-        // set it as the cut of this leaf
-        Vec_VecPush( vBitCuts, Ivy_ObjTravId(pLeaf), pBitCut );
-        // get the fanin cuts
-        vCuts0 = Vec_VecEntry( vBitCuts, Ivy_ObjTravId( Ivy_ObjFanin0(pLeaf) ) );
-        vCuts1 = Vec_VecEntry( vBitCuts, Ivy_ObjTravId( Ivy_ObjFanin1(pLeaf) ) );
-        assert( Vec_PtrSize(vCuts0) > 0 );
-        assert( Vec_PtrSize(vCuts1) > 0 );
-        // merge the cuts
-        Ivy_NodeFindCutsMerge( vCuts0, vCuts1, vCuts, nLeaves, nWords, vStore );
-    }
-
-    // start the structure
-    pCutStore->nCuts = 0;
-    pCutStore->nCutsMax = IVY_CUT_LIMIT;
-    // collect the cuts of the root node
-    vCuts = Vec_VecEntry( vBitCuts, Ivy_ObjTravId(pObj) );
-    Vec_PtrForEachEntry( vCuts, pBitCut, i )
-    {
-        pCut = pCutStore->pCuts + pCutStore->nCuts++;
-        pCut->nSize = 0;
-        pCut->nSizeMax = nLeaves;
-        pCut->uHash = 0;
-        for ( k = 0; k < nNodes; k++ )
-            if ( Extra_TruthHasBit(pBitCut, k) )
-                pCut->pArray[ pCut->nSize++ ] = Ivy_ObjId( Vec_PtrEntry(vNodes, k) );
-        assert( pCut->nSize <= nLeaves );
-        if ( pCutStore->nCuts == pCutStore->nCutsMax )
-            break;
-    }
-
-    // clean the travIds
-    Vec_PtrForEachEntry( vNodes, pLeaf, i )
-        pLeaf->TravId = 0;
-    return pCutStore;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates elementary bit-cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Ivy_NodeCutElementary( Vec_Int_t * vStore, int nWords, int NodeId )
-{
-    unsigned * pBitCut;
-    pBitCut = Vec_IntFetch( vStore, nWords );
-    memset( pBitCut, 0, 4 * nWords );
-    Extra_TruthSetBit( pBitCut, NodeId );
-    return pBitCut;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compares the node by level.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_CompareNodesByLevel( Ivy_Obj_t ** ppObj1, Ivy_Obj_t ** ppObj2 )
-{
-    Ivy_Obj_t * pObj1 = *ppObj1;
-    Ivy_Obj_t * pObj2 = *ppObj2;
-    if ( pObj1->Level < pObj2->Level )
-        return -1;
-    if ( pObj1->Level > pObj2->Level )
-        return 1;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Mark all nodes up to the given depth.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeComputeVolumeTrav1_rec( Ivy_Obj_t * pObj, int Depth )
-{
-    if ( Ivy_ObjIsCi(pObj) || Depth == 0 )
-        return;
-    Ivy_NodeComputeVolumeTrav1_rec( Ivy_ObjFanin0(pObj), Depth - 1 );
-    Ivy_NodeComputeVolumeTrav1_rec( Ivy_ObjFanin1(pObj), Depth - 1 );
-    pObj->fMarkA = 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collect the marked nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeComputeVolumeTrav2_rec( Ivy_Obj_t * pObj, Vec_Ptr_t * vNodes )
-{
-    if ( !pObj->fMarkA )
-        return;
-    Ivy_NodeComputeVolumeTrav2_rec( Ivy_ObjFanin0(pObj), vNodes );
-    Ivy_NodeComputeVolumeTrav2_rec( Ivy_ObjFanin1(pObj), vNodes );
-    Vec_PtrPush( vNodes, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeComputeVolume( Ivy_Obj_t * pObj, int nNodeLimit, Vec_Ptr_t * vNodes, Vec_Ptr_t * vFront )
-{
-    Ivy_Obj_t * pTemp, * pFanin;
-    int i, nNodes;
-    // mark nodes up to the given depth
-    Ivy_NodeComputeVolumeTrav1_rec( pObj, 6 );
-    // collect the marked nodes
-    Vec_PtrClear( vFront );
-    Ivy_NodeComputeVolumeTrav2_rec( pObj, vFront );
-    // find the fanins that are not marked
-    Vec_PtrClear( vNodes );
-    Vec_PtrForEachEntry( vFront, pTemp, i )
-    {
-        pFanin = Ivy_ObjFanin0(pTemp);
-        if ( !pFanin->fMarkA )
-        {
-            pFanin->fMarkA = 1;
-            Vec_PtrPush( vNodes, pFanin );
-        }
-        pFanin = Ivy_ObjFanin1(pTemp);
-        if ( !pFanin->fMarkA )
-        {
-            pFanin->fMarkA = 1;
-            Vec_PtrPush( vNodes, pFanin );
-        }
-    }
-    // remember the number of nodes in the frontier
-    nNodes = Vec_PtrSize( vNodes );
-    // add the remaining nodes
-    Vec_PtrForEachEntry( vFront, pTemp, i )
-        Vec_PtrPush( vNodes, pTemp );
-    // unmark the nodes
-    Vec_PtrForEachEntry( vNodes, pTemp, i )
-    {
-        pTemp->fMarkA = 0;
-        pTemp->TravId = i;
-    }
-    // collect the frontier nodes
-    Vec_PtrClear( vFront );
-    Vec_PtrForEachEntryStop( vNodes, pTemp, i, nNodes )
-        Vec_PtrPush( vFront, pTemp );
-//    printf( "%d ", Vec_PtrSize(vNodes) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeComputeVolume2( Ivy_Obj_t * pObj, int nNodeLimit, Vec_Ptr_t * vNodes, Vec_Ptr_t * vFront )
-{
-    Ivy_Obj_t * pLeaf, * pPivot, * pFanin;
-    int LevelMax, i;
-    assert( Ivy_ObjIsNode(pObj) );
-    // clear arrays
-    Vec_PtrClear( vNodes );
-    Vec_PtrClear( vFront );
-    // add the root
-    pObj->fMarkA = 1;
-    Vec_PtrPush( vNodes, pObj );
-    Vec_PtrPush( vFront, pObj );
-    // expand node with maximum level
-    LevelMax = pObj->Level;
-    do {
-        // get the node to expand
-        pPivot = NULL;
-        Vec_PtrForEachEntryReverse( vFront, pLeaf, i )
-        {
-            if ( (int)pLeaf->Level == LevelMax )
-            {
-                pPivot = pLeaf;
-                break;
-            }
-        }
-        // decrease level if we did not find the node
-        if ( pPivot == NULL )
-        {
-            if ( --LevelMax == 0 )
-                break;
-            continue;
-        }
-        // the node to expand is found
-        // remove it from frontier
-        Vec_PtrRemove( vFront, pPivot );
-        // add fanins
-        pFanin = Ivy_ObjFanin0(pPivot); 
-        if ( !pFanin->fMarkA )
-        {
-            pFanin->fMarkA = 1;
-            Vec_PtrPush( vNodes, pFanin );
-            Vec_PtrPush( vFront, pFanin );
-        }
-        pFanin = Ivy_ObjFanin1(pPivot); 
-        if ( pFanin && !pFanin->fMarkA )
-        {
-            pFanin->fMarkA = 1;
-            Vec_PtrPush( vNodes, pFanin );
-            Vec_PtrPush( vFront, pFanin );
-        }
-        // quit if we collected enough nodes
-    } while ( Vec_PtrSize(vNodes) < nNodeLimit );
-
-    // sort nodes by level
-    Vec_PtrSort( vNodes, Ivy_CompareNodesByLevel );
-    // make sure the nodes are ordered in the increasing number of levels
-    pFanin = Vec_PtrEntry( vNodes, 0 );
-    pPivot = Vec_PtrEntryLast( vNodes );
-    assert( pFanin->Level <= pPivot->Level );
-
-    // clean the marks and remember node numbers in the TravId
-    Vec_PtrForEachEntry( vNodes, pFanin, i )
-    {
-        pFanin->fMarkA = 0;
-        pFanin->TravId = i;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Extra_TruthOrWords( unsigned * pOut, unsigned * pIn0, unsigned * pIn1, int nWords )
-{
-    int w;
-    for ( w = nWords-1; w >= 0; w-- )
-        pOut[w] = pIn0[w] | pIn1[w];
-}
-static inline int Extra_TruthIsImplyWords( unsigned * pIn1, unsigned * pIn2, int nWords )
-{
-    int w;
-    for ( w = nWords-1; w >= 0; w-- )
-        if ( pIn1[w] & ~pIn2[w] )
-            return 0;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Merges two sets of bit-cuts at a node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeFindCutsMerge( Vec_Ptr_t * vCuts0, Vec_Ptr_t * vCuts1, Vec_Ptr_t * vCuts, 
-                           int nLeaves, int nWords, Vec_Int_t * vStore )
-{
-    unsigned * pBitCut, * pBitCut0, * pBitCut1, * pBitCutTest;
-    int i, k, c, w, Counter;
-    // iterate through the cut pairs
-    Vec_PtrForEachEntry( vCuts0, pBitCut0, i )
-    Vec_PtrForEachEntry( vCuts1, pBitCut1, k )
-    {
-        // skip infeasible cuts
-        Counter = 0;
-        for ( w = 0; w < nWords; w++ )
-        {
-            Counter += Extra_WordCountOnes( pBitCut0[w] | pBitCut1[w] );
-            if ( Counter > nLeaves )
-                break;
-        }
-        if ( Counter > nLeaves )
-            continue;
-        // the new cut is feasible - create it
-        pBitCutTest = Vec_IntFetch( vStore, nWords );
-        Extra_TruthOrWords( pBitCutTest, pBitCut0, pBitCut1, nWords );
-        // filter contained cuts; try to find containing cut
-        w = 0;
-        Vec_PtrForEachEntry( vCuts, pBitCut, c )
-        {
-            if ( Extra_TruthIsImplyWords( pBitCut, pBitCutTest, nWords ) )
-                break;
-            if ( Extra_TruthIsImplyWords( pBitCutTest, pBitCut, nWords ) )
-                continue;
-            Vec_PtrWriteEntry( vCuts, w++, pBitCut );
-        }
-        if ( c != Vec_PtrSize(vCuts) )
-            continue;
-        Vec_PtrShrink( vCuts, w );
-        // add the cut
-        Vec_PtrPush( vCuts, pBitCutTest );
-    }
-}
- 
-/**Function*************************************************************
-
-  Synopsis    [Compute the set of all cuts.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManTestCutsTravAll( Ivy_Man_t * p )
-{
-    Ivy_Store_t * pStore;
-    Ivy_Obj_t * pObj;
-    Vec_Ptr_t * vNodes, * vFront;
-    Vec_Int_t * vStore;
-    Vec_Vec_t * vBitCuts;
-    int i, nCutsCut, nCutsTotal, nNodeTotal, nNodeOver;
-    int clk = clock();
-
-    vNodes = Vec_PtrAlloc( 100 );
-    vFront = Vec_PtrAlloc( 100 );
-    vStore = Vec_IntAlloc( 100 );
-    vBitCuts = Vec_VecAlloc( 100 );
-
-    nNodeTotal = nNodeOver = 0;
-    nCutsTotal = -Ivy_ManNodeNum(p);
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        if ( !Ivy_ObjIsNode(pObj) )
-            continue;
-        pStore = Ivy_NodeFindCutsTravAll( p, pObj, 4, 60, vNodes, vFront, vStore, vBitCuts );
-        nCutsCut    = pStore->nCuts;
-        nCutsTotal += nCutsCut;
-        nNodeOver  += (nCutsCut == IVY_CUT_LIMIT);
-        nNodeTotal++;
-    }
-    printf( "Total cuts = %6d. Trivial = %6d.   Nodes = %6d. Satur = %6d.  ", 
-        nCutsTotal, Ivy_ManPiNum(p) + Ivy_ManNodeNum(p), nNodeTotal, nNodeOver );
-    PRT( "Time", clock() - clk );
-
-    Vec_PtrFree( vNodes );
-    Vec_PtrFree( vFront );
-    Vec_IntFree( vStore );
-    Vec_VecFree( vBitCuts );
-
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyDfs.c b/src/aig/ivy/ivyDfs.c
deleted file mode 100644
index c27cba31..00000000
--- a/src/aig/ivy/ivyDfs.c
+++ /dev/null
@@ -1,493 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyDfs.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [DFS collection procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyDfs.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Collects nodes in the DFS order.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManDfs_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj, Vec_Int_t * vNodes )
-{
-    if ( Ivy_ObjIsMarkA(pObj) )
-        return;
-    Ivy_ObjSetMarkA(pObj);
-    if ( Ivy_ObjIsConst1(pObj) || Ivy_ObjIsCi(pObj) )
-    {
-        if ( p->pHaig == NULL && pObj->pEquiv )
-            Ivy_ManDfs_rec( p, Ivy_Regular(pObj->pEquiv), vNodes );
-        return;
-    }
-//printf( "visiting node %d\n", pObj->Id );
-/*
-    if ( pObj->Id == 87 || pObj->Id == 90 )
-    {
-        int y = 0;
-    }
-*/
-    assert( Ivy_ObjIsBuf(pObj) || Ivy_ObjIsAnd(pObj) || Ivy_ObjIsExor(pObj) );
-    Ivy_ManDfs_rec( p, Ivy_ObjFanin0(pObj), vNodes );
-    if ( !Ivy_ObjIsBuf(pObj) )
-        Ivy_ManDfs_rec( p, Ivy_ObjFanin1(pObj), vNodes );
-    if ( p->pHaig == NULL && pObj->pEquiv )
-        Ivy_ManDfs_rec( p, Ivy_Regular(pObj->pEquiv), vNodes );
-    Vec_IntPush( vNodes, pObj->Id );
-
-//printf( "adding node %d with fanins %d and %d and equiv %d (refs = %d)\n", 
-//       pObj->Id, Ivy_ObjFanin0(pObj)->Id, Ivy_ObjFanin1(pObj)->Id, 
-//       pObj->pEquiv? Ivy_Regular(pObj->pEquiv)->Id: -1, Ivy_ObjRefs(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects AND/EXOR nodes in the DFS order from CIs to COs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Ivy_ManDfs( Ivy_Man_t * p )
-{
-    Vec_Int_t * vNodes;
-    Ivy_Obj_t * pObj;
-    int i;
-    assert( Ivy_ManLatchNum(p) == 0 );
-    // make sure the nodes are not marked
-    Ivy_ManForEachObj( p, pObj, i )
-        assert( !pObj->fMarkA && !pObj->fMarkB );
-    // collect the nodes
-    vNodes = Vec_IntAlloc( Ivy_ManNodeNum(p) );
-    Ivy_ManForEachPo( p, pObj, i )
-        Ivy_ManDfs_rec( p, Ivy_ObjFanin0(pObj), vNodes );
-    // unmark the collected nodes
-//    Ivy_ManForEachNodeVec( p, vNodes, pObj, i )
-//        Ivy_ObjClearMarkA(pObj);
-    Ivy_ManForEachObj( p, pObj, i )
-        Ivy_ObjClearMarkA(pObj);
-    // make sure network does not have dangling nodes
-    assert( Vec_IntSize(vNodes) == Ivy_ManNodeNum(p) + Ivy_ManBufNum(p) );
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects AND/EXOR nodes in the DFS order from CIs to COs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Ivy_ManDfsSeq( Ivy_Man_t * p, Vec_Int_t ** pvLatches )
-{
-    Vec_Int_t * vNodes, * vLatches;
-    Ivy_Obj_t * pObj;
-    int i;
-//    assert( Ivy_ManLatchNum(p) > 0 );
-    // make sure the nodes are not marked
-    Ivy_ManForEachObj( p, pObj, i )
-        assert( !pObj->fMarkA && !pObj->fMarkB );
-    // collect the latches
-    vLatches = Vec_IntAlloc( Ivy_ManLatchNum(p) );
-    Ivy_ManForEachLatch( p, pObj, i )
-        Vec_IntPush( vLatches, pObj->Id );
-    // collect the nodes
-    vNodes = Vec_IntAlloc( Ivy_ManNodeNum(p) );
-    Ivy_ManForEachPo( p, pObj, i )
-        Ivy_ManDfs_rec( p, Ivy_ObjFanin0(pObj), vNodes );
-    Ivy_ManForEachNodeVec( p, vLatches, pObj, i )
-        Ivy_ManDfs_rec( p, Ivy_ObjFanin0(pObj), vNodes );
-    // unmark the collected nodes
-//    Ivy_ManForEachNodeVec( p, vNodes, pObj, i )
-//        Ivy_ObjClearMarkA(pObj);
-    Ivy_ManForEachObj( p, pObj, i )
-        Ivy_ObjClearMarkA(pObj);
-    // make sure network does not have dangling nodes
-//    assert( Vec_IntSize(vNodes) == Ivy_ManNodeNum(p) + Ivy_ManBufNum(p) );
-
-// temporary!!!
-
-    if ( pvLatches == NULL )
-        Vec_IntFree( vLatches );
-    else
-        *pvLatches = vLatches;
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects nodes in the cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManCollectCone_rec( Ivy_Obj_t * pObj, Vec_Ptr_t * vCone )
-{
-    if ( pObj->fMarkA )
-        return;
-    if ( Ivy_ObjIsBuf(pObj) )
-    {
-        Ivy_ManCollectCone_rec( Ivy_ObjFanin0(pObj), vCone );
-        Vec_PtrPush( vCone, pObj );
-        return;
-    }
-    assert( Ivy_ObjIsNode(pObj) );
-    Ivy_ManCollectCone_rec( Ivy_ObjFanin0(pObj), vCone );
-    Ivy_ManCollectCone_rec( Ivy_ObjFanin1(pObj), vCone );
-    Vec_PtrPushUnique( vCone, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects nodes in the cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManCollectCone( Ivy_Obj_t * pObj, Vec_Ptr_t * vFront, Vec_Ptr_t * vCone )
-{
-    Ivy_Obj_t * pTemp;
-    int i;
-    assert( !Ivy_IsComplement(pObj) );
-    assert( Ivy_ObjIsNode(pObj) );
-    // mark the nodes
-    Vec_PtrForEachEntry( vFront, pTemp, i )
-        Ivy_Regular(pTemp)->fMarkA = 1;
-    assert( pObj->fMarkA == 0 );
-    // collect the cone
-    Vec_PtrClear( vCone );
-    Ivy_ManCollectCone_rec( pObj, vCone );
-    // unmark the nodes
-    Vec_PtrForEachEntry( vFront, pTemp, i )
-        Ivy_Regular(pTemp)->fMarkA = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the nodes by level.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Vec_t * Ivy_ManLevelize( Ivy_Man_t * p )
-{
-    Vec_Vec_t * vNodes;
-    Ivy_Obj_t * pObj;
-    int i;
-    vNodes = Vec_VecAlloc( 100 );
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        assert( !Ivy_ObjIsBuf(pObj) );
-        if ( Ivy_ObjIsNode(pObj) )
-            Vec_VecPush( vNodes, pObj->Level, pObj );
-    }
-    return vNodes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes required levels for each node.]
-
-  Description [Assumes topological ordering of the nodes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Ivy_ManRequiredLevels( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    Vec_Int_t * vLevelsR;
-    Vec_Vec_t * vNodes;
-    int i, k, Level, LevelMax;
-    assert( p->vRequired == NULL );
-    // start the required times
-    vLevelsR = Vec_IntStart( Ivy_ManObjIdMax(p) + 1 );
-    // iterate through the nodes in the reverse order
-    vNodes = Ivy_ManLevelize( p );
-    Vec_VecForEachEntryReverseReverse( vNodes, pObj, i, k )
-    {
-        Level = Vec_IntEntry( vLevelsR, pObj->Id ) + 1 + Ivy_ObjIsExor(pObj);
-        if ( Vec_IntEntry( vLevelsR, Ivy_ObjFaninId0(pObj) ) < Level )
-            Vec_IntWriteEntry( vLevelsR, Ivy_ObjFaninId0(pObj), Level );
-        if ( Vec_IntEntry( vLevelsR, Ivy_ObjFaninId1(pObj) ) < Level )
-            Vec_IntWriteEntry( vLevelsR, Ivy_ObjFaninId1(pObj), Level );
-    }
-    Vec_VecFree( vNodes );
-    // convert it into the required times
-    LevelMax = Ivy_ManLevels( p );
-//printf( "max %5d\n",LevelMax );
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        Level = Vec_IntEntry( vLevelsR, pObj->Id );
-        Vec_IntWriteEntry( vLevelsR, pObj->Id, LevelMax - Level );
-//printf( "%5d : %5d %5d\n", pObj->Id, Level, LevelMax - Level );
-    }
-    p->vRequired = vLevelsR;
-    return vLevelsR;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recursively detects combinational loops.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManIsAcyclic_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    // skip the node if it is already visited
-    if ( Ivy_ObjIsTravIdPrevious(p, pObj) )
-        return 1;
-    // check if the node is part of the combinational loop
-    if ( Ivy_ObjIsTravIdCurrent(p, pObj) )
-    {
-        fprintf( stdout, "Manager contains combinational loop!\n" );
-        fprintf( stdout, "Node \"%d\" is encountered twice on the following path:\n",  Ivy_ObjId(pObj) );
-        fprintf( stdout, " %d",  Ivy_ObjId(pObj) );
-        return 0;
-    }
-    // mark this node as a node on the current path
-    Ivy_ObjSetTravIdCurrent( p, pObj );
-    // explore equivalent nodes if pObj is the main node
-    if ( p->pHaig == NULL && pObj->pEquiv && Ivy_ObjRefs(pObj) > 0 )
-    {
-        Ivy_Obj_t * pTemp;
-        assert( !Ivy_IsComplement(pObj->pEquiv) );
-        for ( pTemp = pObj->pEquiv; pTemp != pObj; pTemp = Ivy_Regular(pTemp->pEquiv) )
-        {
-            // traverse the fanin's cone searching for the loop
-            if ( !Ivy_ManIsAcyclic_rec(p, pTemp) )
-            {
-                // return as soon as the loop is detected
-                fprintf( stdout, " -> (%d", Ivy_ObjId(pObj) );
-                for ( pTemp = pObj->pEquiv; pTemp != pObj; pTemp = Ivy_Regular(pTemp->pEquiv) )
-                    fprintf( stdout, " %d", Ivy_ObjId(pTemp) );
-                fprintf( stdout, ")" );
-                return 0; 
-            }
-        }
-    }
-    // quite if it is a CI node
-    if ( Ivy_ObjIsCi(pObj) || Ivy_ObjIsConst1(pObj) )
-    {
-        // mark this node as a visited node
-        Ivy_ObjSetTravIdPrevious( p, pObj );
-        return 1;
-    }
-    assert( Ivy_ObjIsNode(pObj) || Ivy_ObjIsBuf(pObj) );
-    // traverse the fanin's cone searching for the loop
-    if ( !Ivy_ManIsAcyclic_rec(p, Ivy_ObjFanin0(pObj)) )
-    {
-        // return as soon as the loop is detected
-        fprintf( stdout, " -> %d", Ivy_ObjId(pObj) );
-        return 0;
-    }
-    // traverse the fanin's cone searching for the loop
-    if ( Ivy_ObjIsNode(pObj) && !Ivy_ManIsAcyclic_rec(p, Ivy_ObjFanin1(pObj)) )
-    {
-        // return as soon as the loop is detected
-        fprintf( stdout, " -> %d", Ivy_ObjId(pObj) );
-        return 0;
-    }
-    // mark this node as a visited node
-    Ivy_ObjSetTravIdPrevious( p, pObj );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Detects combinational loops.]
-
-  Description [This procedure is based on the idea suggested by Donald Chai. 
-  As we traverse the network and visit the nodes, we need to distinquish 
-  three types of nodes: (1) those that are visited for the first time, 
-  (2) those that have been visited in this traversal but are currently not 
-  on the traversal path, (3) those that have been visited and are currently 
-  on the travesal path. When the node of type (3) is encountered, it means 
-  that there is a combinational loop. To mark the three types of nodes, 
-  two new values of the traversal IDs are used.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManIsAcyclic( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int fAcyclic, i;
-    // set the traversal ID for this DFS ordering
-    Ivy_ManIncrementTravId( p );   
-    Ivy_ManIncrementTravId( p );   
-    // pObj->TravId == pNet->nTravIds      means "pObj is on the path"
-    // pObj->TravId == pNet->nTravIds - 1  means "pObj is visited but is not on the path"
-    // pObj->TravId <  pNet->nTravIds - 1  means "pObj is not visited"
-    // traverse the network to detect cycles
-    fAcyclic = 1;
-    Ivy_ManForEachCo( p, pObj, i )
-    {
-        // traverse the output logic cone
-        if ( fAcyclic = Ivy_ManIsAcyclic_rec(p, Ivy_ObjFanin0(pObj)) )
-            continue;
-        // stop as soon as the first loop is detected
-        fprintf( stdout, " (cone of %s \"%d\")\n", Ivy_ObjIsLatch(pObj)? "latch" : "PO", Ivy_ObjId(pObj) );
-        break;
-    }
-    return fAcyclic;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the levels of the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManSetLevels_rec( Ivy_Obj_t * pObj, int fHaig )
-{
-    // quit if the node is visited
-    if ( Ivy_ObjIsMarkA(pObj) )
-        return pObj->Level;
-    Ivy_ObjSetMarkA(pObj);
-    // quit if this is a CI
-    if ( Ivy_ObjIsConst1(pObj) || Ivy_ObjIsCi(pObj) )
-        return 0;
-    assert( Ivy_ObjIsBuf(pObj) || Ivy_ObjIsAnd(pObj) || Ivy_ObjIsExor(pObj) );
-    // get levels of the fanins
-    Ivy_ManSetLevels_rec( Ivy_ObjFanin0(pObj), fHaig );
-    if ( !Ivy_ObjIsBuf(pObj) )
-        Ivy_ManSetLevels_rec( Ivy_ObjFanin1(pObj), fHaig );
-    // get level of the node
-    if ( Ivy_ObjIsBuf(pObj) )
-        pObj->Level = 1 + Ivy_ObjFanin0(pObj)->Level;
-    else if ( Ivy_ObjIsNode(pObj) )
-        pObj->Level = Ivy_ObjLevelNew( pObj );
-    else assert( 0 );
-    // get level of other choices
-    if ( fHaig && pObj->pEquiv && Ivy_ObjRefs(pObj) > 0 )
-    {
-        Ivy_Obj_t * pTemp;
-        unsigned LevelMax = pObj->Level;
-        for ( pTemp = pObj->pEquiv; pTemp != pObj; pTemp = Ivy_Regular(pTemp->pEquiv) )
-        {
-            Ivy_ManSetLevels_rec( pTemp, fHaig );
-            LevelMax = IVY_MAX( LevelMax, pTemp->Level );
-        }
-        // get this level
-        pObj->Level = LevelMax;
-        for ( pTemp = pObj->pEquiv; pTemp != pObj; pTemp = Ivy_Regular(pTemp->pEquiv) )
-            pTemp->Level = LevelMax;
-    }
-    return pObj->Level;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the levels of the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManSetLevels( Ivy_Man_t * p, int fHaig )
-{
-    Ivy_Obj_t * pObj;
-    int i, LevelMax;
-    // check if CIs have choices
-    if ( fHaig )
-    {
-        Ivy_ManForEachCi( p, pObj, i )
-            if ( pObj->pEquiv )
-                printf( "CI %d has a choice, which will not be visualized.\n", pObj->Id );
-    }
-    // clean the levels
-    Ivy_ManForEachObj( p, pObj, i )
-        pObj->Level = 0;
-    // compute the levels
-    LevelMax = 0;
-    Ivy_ManForEachCo( p, pObj, i )
-    {
-        Ivy_ManSetLevels_rec( Ivy_ObjFanin0(pObj), fHaig );
-        LevelMax = IVY_MAX( LevelMax, (int)Ivy_ObjFanin0(pObj)->Level );
-    }
-    // compute levels of nodes without fanout
-    Ivy_ManForEachObj( p, pObj, i )
-        if ( (Ivy_ObjIsNode(pObj) || Ivy_ObjIsBuf(pObj)) && Ivy_ObjRefs(pObj) == 0 )
-        {
-            Ivy_ManSetLevels_rec( pObj, fHaig );
-            LevelMax = IVY_MAX( LevelMax, (int)pObj->Level );
-        }
-    // clean the marks
-    Ivy_ManForEachObj( p, pObj, i )
-        Ivy_ObjClearMarkA(pObj);
-    return LevelMax;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyDsd.c b/src/aig/ivy/ivyDsd.c
deleted file mode 100644
index 3b8a2e68..00000000
--- a/src/aig/ivy/ivyDsd.c
+++ /dev/null
@@ -1,819 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyDsd.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Disjoint-support decomposition.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyDsd.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// decomposition types
-typedef enum { 
-    IVY_DEC_PI,             // 0: var
-    IVY_DEC_CONST1,         // 1: CONST1
-    IVY_DEC_BUF,            // 2: BUF
-    IVY_DEC_AND,            // 3: AND
-    IVY_DEC_EXOR,           // 4: EXOR
-    IVY_DEC_MUX,            // 5: MUX
-    IVY_DEC_MAJ,            // 6: MAJ
-    IVY_DEC_PRIME           // 7: undecomposable
-} Ivy_DecType_t;
-
-typedef struct Ivy_Dec_t_ Ivy_Dec_t;
-struct Ivy_Dec_t_
-{
-    unsigned  Type   : 4;   // the node type (PI, CONST1, AND, EXOR, MUX, PRIME)
-    unsigned  fCompl : 1;   // shows if node is complemented (root node only)
-    unsigned  nFans  : 3;   // the number of fanins
-    unsigned  Fan0   : 4;   // fanin 0
-    unsigned  Fan1   : 4;   // fanin 1 
-    unsigned  Fan2   : 4;   // fanin 2
-    unsigned  Fan3   : 4;   // fanin 3 
-    unsigned  Fan4   : 4;   // fanin 4 
-    unsigned  Fan5   : 4;   // fanin 5
-};
-
-static inline int        Ivy_DecToInt( Ivy_Dec_t Node )     { return *((int *)&Node);       }
-static inline Ivy_Dec_t  Ivy_IntToDec( int Node )           { return *((Ivy_Dec_t *)&Node); }
-static inline void       Ivy_DecClear( Ivy_Dec_t * pNode )  { *((int *)pNode) = 0;          }
-
-
-static unsigned s_Masks[6][2] = {
-    { 0x55555555, 0xAAAAAAAA },
-    { 0x33333333, 0xCCCCCCCC },
-    { 0x0F0F0F0F, 0xF0F0F0F0 },
-    { 0x00FF00FF, 0xFF00FF00 },
-    { 0x0000FFFF, 0xFFFF0000 },
-    { 0x00000000, 0xFFFFFFFF }
-};
-
-static inline int        Ivy_TruthWordCountOnes( unsigned uWord )
-{
-    uWord = (uWord & 0x55555555) + ((uWord>>1) & 0x55555555);
-    uWord = (uWord & 0x33333333) + ((uWord>>2) & 0x33333333);
-    uWord = (uWord & 0x0F0F0F0F) + ((uWord>>4) & 0x0F0F0F0F);
-    uWord = (uWord & 0x00FF00FF) + ((uWord>>8) & 0x00FF00FF);
-    return  (uWord & 0x0000FFFF) + (uWord>>16);
-}
-
-static inline int        Ivy_TruthCofactorIsConst( unsigned uTruth, int Var, int Cof, int Const )
-{
-    if ( Const == 0 )
-        return (uTruth & s_Masks[Var][Cof]) == 0;
-    else
-        return (uTruth & s_Masks[Var][Cof]) == s_Masks[Var][Cof];
-}
-
-static inline int        Ivy_TruthCofactorIsOne( unsigned uTruth, int Var )
-{
-    return (uTruth & s_Masks[Var][0]) == 0;
-}
-
-static inline unsigned   Ivy_TruthCofactor( unsigned uTruth, int Var )
-{
-    unsigned uCofactor = uTruth & s_Masks[Var >> 1][(Var & 1) == 0];
-    int Shift = (1 << (Var >> 1));
-    if ( Var & 1 )
-        return uCofactor | (uCofactor << Shift);
-    return uCofactor | (uCofactor >> Shift);
-}
-
-static inline unsigned   Ivy_TruthCofactor2( unsigned uTruth, int Var0, int Var1 )
-{
-    return Ivy_TruthCofactor( Ivy_TruthCofactor(uTruth, Var0), Var1 );
-}
-
-// returns 1 if the truth table depends on this var (var is regular interger var)
-static inline int        Ivy_TruthDepends( unsigned uTruth, int Var )
-{
-    return Ivy_TruthCofactor(uTruth, Var << 1) != Ivy_TruthCofactor(uTruth, (Var << 1) | 1);
-}
-
-static inline void       Ivy_DecSetVar( Ivy_Dec_t * pNode, int iNum, unsigned Var )
-{
-    assert( iNum >= 0 && iNum <= 5 );
-    switch( iNum )
-    {
-        case 0: pNode->Fan0 = Var; break;
-        case 1: pNode->Fan1 = Var; break;
-        case 2: pNode->Fan2 = Var; break;
-        case 3: pNode->Fan3 = Var; break;
-        case 4: pNode->Fan4 = Var; break;
-        case 5: pNode->Fan5 = Var; break;
-    }
-}
-
-static inline unsigned   Ivy_DecGetVar( Ivy_Dec_t * pNode, int iNum )
-{
-    assert( iNum >= 0 && iNum <= 5 );
-    switch( iNum )
-    {
-        case 0: return pNode->Fan0;
-        case 1: return pNode->Fan1;
-        case 2: return pNode->Fan2;
-        case 3: return pNode->Fan3;
-        case 4: return pNode->Fan4;
-        case 5: return pNode->Fan5;
-    }
-    return ~0;
-}
-
-static int   Ivy_TruthDecompose_rec( unsigned uTruth, Vec_Int_t * vTree );
-static int   Ivy_TruthRecognizeMuxMaj( unsigned uTruth, int * pSupp, int nSupp, Vec_Int_t * vTree );
-
-//int nTruthDsd;
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Computes DSD of truth table of 5 variables or less.]
-
-  Description [Returns 1 if the function is a constant or is fully 
-  DSD decomposable using AND/EXOR/MUX gates.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_TruthDsd( unsigned uTruth, Vec_Int_t * vTree )
-{
-    Ivy_Dec_t Node;
-    int i, RetValue;
-    // set the PI variables
-    Vec_IntClear( vTree );
-    for ( i = 0; i < 5; i++ )
-        Vec_IntPush( vTree, 0 );
-    // check if it is a constant
-    if ( uTruth == 0 || ~uTruth == 0 )
-    {
-        Ivy_DecClear( &Node );
-        Node.Type = IVY_DEC_CONST1;
-        Node.fCompl = (uTruth == 0);
-        Vec_IntPush( vTree, Ivy_DecToInt(Node) );
-        return 1;
-    }
-    // perform the decomposition
-    RetValue = Ivy_TruthDecompose_rec( uTruth, vTree );
-    if ( RetValue == -1 )
-        return 0;
-    // get the topmost node
-    if ( (RetValue >> 1) < 5 )
-    { // add buffer
-        Ivy_DecClear( &Node );
-        Node.Type = IVY_DEC_BUF;
-        Node.fCompl = (RetValue & 1);
-        Node.Fan0 = ((RetValue >> 1) << 1);
-        Vec_IntPush( vTree, Ivy_DecToInt(Node) );
-    }
-    else if ( RetValue & 1 )
-    { // check if the topmost node has to be complemented
-        Node = Ivy_IntToDec( Vec_IntPop(vTree) );
-        assert( Node.fCompl == 0 );
-        Node.fCompl = (RetValue & 1);
-        Vec_IntPush( vTree, Ivy_DecToInt(Node) );
-    }
-    if ( uTruth != Ivy_TruthDsdCompute(vTree) )
-        printf( "Verification failed.\n" );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes DSD of truth table.]
-
-  Description [Returns the number of topmost decomposition node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_TruthDecompose_rec( unsigned uTruth, Vec_Int_t * vTree )
-{
-    Ivy_Dec_t Node;
-    int Supp[5], Vars0[5], Vars1[5], Vars2[5], * pVars;
-    int nSupp, Count0, Count1, Count2, nVars, RetValue, fCompl, i;
-    unsigned uTruthCof, uCof0, uCof1;
-
-    // get constant confactors
-    Count0 = Count1 = Count2 = nSupp = 0;
-    for ( i = 0; i < 5; i++ )
-    {
-        if ( Ivy_TruthCofactorIsConst(uTruth, i, 0, 0) )
-            Vars0[Count0++] = (i << 1) | 0;
-        else if ( Ivy_TruthCofactorIsConst(uTruth, i, 1, 0) )
-            Vars0[Count0++] = (i << 1) | 1;
-        else if ( Ivy_TruthCofactorIsConst(uTruth, i, 0, 1) )
-            Vars1[Count1++] = (i << 1) | 0;
-        else if ( Ivy_TruthCofactorIsConst(uTruth, i, 1, 1) )
-            Vars1[Count1++] = (i << 1) | 1;
-        else
-        {
-            uCof0 = Ivy_TruthCofactor( uTruth, (i << 1) | 1 );
-            uCof1 = Ivy_TruthCofactor( uTruth, (i << 1) | 0 );
-            if ( uCof0 == ~uCof1 )
-                Vars2[Count2++] = (i << 1) | 0;
-            else if ( uCof0 != uCof1 )
-                Supp[nSupp++] = i;
-        }
-    }
-    assert( Count0 == 0 || Count1 == 0 );
-    assert( Count0 == 0 || Count2 == 0 );
-    assert( Count1 == 0 || Count2 == 0 );
-
-    // consider the case of a single variable
-    if ( Count0 == 1 && nSupp == 0 )
-        return Vars0[0];
-
-    // consider more complex decompositions
-    if ( Count0 == 0 && Count1 == 0 && Count2 == 0 )
-        return Ivy_TruthRecognizeMuxMaj( uTruth, Supp, nSupp, vTree );
-
-    // extract the nodes
-    Ivy_DecClear( &Node );
-    if ( Count0 > 0 )
-        nVars = Count0, pVars = Vars0, Node.Type = IVY_DEC_AND,  fCompl = 0;
-    else if ( Count1 > 0 )
-        nVars = Count1, pVars = Vars1, Node.Type = IVY_DEC_AND,  fCompl = 1, uTruth = ~uTruth;
-    else if ( Count2 > 0 )
-        nVars = Count2, pVars = Vars2, Node.Type = IVY_DEC_EXOR, fCompl = 0;
-    else 
-        assert( 0 );
-    Node.nFans = nVars+(nSupp>0);
-
-    // compute cofactor
-    uTruthCof = uTruth;
-    for ( i = 0; i < nVars; i++ )
-    {
-        uTruthCof = Ivy_TruthCofactor( uTruthCof, pVars[i] );
-        Ivy_DecSetVar( &Node, i, pVars[i] );
-    }
-
-    if ( Node.Type == IVY_DEC_EXOR )
-        fCompl ^= ((Node.nFans & 1) == 0);
-
-    if ( nSupp > 0 )
-    {
-        assert( uTruthCof != 0 && ~uTruthCof != 0 );
-        // call recursively
-        RetValue = Ivy_TruthDecompose_rec( uTruthCof, vTree );
-        // quit if non-decomposable
-        if ( RetValue == -1 )
-            return -1;
-        // remove the complement from the child if the node is EXOR
-        if ( Node.Type == IVY_DEC_EXOR && (RetValue & 1) )
-        {
-            fCompl ^= 1;
-            RetValue ^= 1;
-        }
-        // set the new decomposition
-        Ivy_DecSetVar( &Node, nVars, RetValue );
-    }
-    else if ( Node.Type == IVY_DEC_EXOR )
-        fCompl ^= (uTruthCof == 0);
-
-    Vec_IntPush( vTree, Ivy_DecToInt(Node) );
-    return ((Vec_IntSize(vTree)-1) << 1) | fCompl;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns a non-negative number if the truth table is a MUX.]
-
-  Description [If the truth table is a MUX, returns the variable as follows:
-  first, control variable; second, positive cofactor; third, negative cofactor.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_TruthRecognizeMuxMaj( unsigned uTruth, int * pSupp, int nSupp, Vec_Int_t * vTree )
-{
-    Ivy_Dec_t Node;
-    int i, k, RetValue0, RetValue1;
-    unsigned uCof0, uCof1, Num;
-    char Count[3];
-    assert( nSupp >= 3 );
-    // start the node
-    Ivy_DecClear( &Node );
-    Node.Type = IVY_DEC_MUX;
-    Node.nFans = 3;
-    // try each of the variables
-    for ( i = 0; i < nSupp; i++ )
-    {
-        // get the cofactors with respect to these variables
-        uCof0 = Ivy_TruthCofactor( uTruth, (pSupp[i] << 1) | 1 );
-        uCof1 = Ivy_TruthCofactor( uTruth,  pSupp[i] << 1 );
-        // go through all other variables and make sure 
-        // each of them belongs to the support of one cofactor
-        for ( k = 0; k < nSupp; k++ )
-        {
-            if ( k == i )
-                continue;
-            if ( Ivy_TruthDepends(uCof0, pSupp[k]) && Ivy_TruthDepends(uCof1, pSupp[k]) )
-                break;
-        }
-        if ( k < nSupp )
-            continue;
-        // MUX decomposition exists
-        RetValue0 = Ivy_TruthDecompose_rec( uCof0, vTree );
-        if ( RetValue0 == -1 )
-            break;
-        RetValue1 = Ivy_TruthDecompose_rec( uCof1, vTree );
-        if ( RetValue1 == -1 )
-            break;
-        // both of them exist; create the node
-        Ivy_DecSetVar( &Node, 0, pSupp[i] << 1 );
-        Ivy_DecSetVar( &Node, 1, RetValue1 );
-        Ivy_DecSetVar( &Node, 2, RetValue0 );
-        Vec_IntPush( vTree, Ivy_DecToInt(Node) );
-        return ((Vec_IntSize(vTree)-1) << 1) | 0;
-    }
-    // check majority gate
-    if ( nSupp > 3 )
-        return -1;
-    if ( Ivy_TruthWordCountOnes(uTruth) != 16 )
-        return -1;
-    // this is a majority gate; determine polarity
-    Node.Type = IVY_DEC_MAJ;
-    Count[0] = Count[1] = Count[2] = 0;
-    for ( i = 0; i < 8; i++ )
-    {
-        Num = 0;
-        for ( k = 0; k < 3; k++ )
-            if ( i & (1 << k) )
-                Num |= (1 << pSupp[k]);
-        assert( Num < 32 );
-        if ( (uTruth & (1 << Num)) == 0 )
-            continue;
-        for ( k = 0; k < 3; k++ )
-            if ( i & (1 << k) )
-                Count[k]++;
-    }
-    assert( Count[0] == 1 || Count[0] == 3 );
-    assert( Count[1] == 1 || Count[1] == 3 );
-    assert( Count[2] == 1 || Count[2] == 3 );
-    Ivy_DecSetVar( &Node, 0, (pSupp[0] << 1)|(Count[0] == 1) );
-    Ivy_DecSetVar( &Node, 1, (pSupp[1] << 1)|(Count[1] == 1) );
-    Ivy_DecSetVar( &Node, 2, (pSupp[2] << 1)|(Count[2] == 1) );
-    Vec_IntPush( vTree, Ivy_DecToInt(Node) );
-    return ((Vec_IntSize(vTree)-1) << 1) | 0;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of decomposition tree for verification.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Ivy_TruthDsdCompute_rec( int iNode, Vec_Int_t * vTree )
-{
-    unsigned uTruthChild, uTruthTotal;
-    int Var, i;
-    // get the node
-    Ivy_Dec_t Node = Ivy_IntToDec( Vec_IntEntry(vTree, iNode) );
-    // compute the node function
-    if ( Node.Type == IVY_DEC_CONST1 )
-        return s_Masks[5][ !Node.fCompl ];
-    if ( Node.Type == IVY_DEC_PI )
-        return s_Masks[iNode][ !Node.fCompl ];
-    if ( Node.Type == IVY_DEC_BUF )
-    {
-        uTruthTotal = Ivy_TruthDsdCompute_rec( Node.Fan0 >> 1, vTree );
-        return Node.fCompl? ~uTruthTotal : uTruthTotal;
-    }
-    if ( Node.Type == IVY_DEC_AND )
-    {
-        uTruthTotal = s_Masks[5][1];
-        for ( i = 0; i < (int)Node.nFans; i++ )
-        {
-            Var = Ivy_DecGetVar( &Node, i );
-            uTruthChild = Ivy_TruthDsdCompute_rec( Var >> 1, vTree );
-            uTruthTotal = (Var & 1)? uTruthTotal & ~uTruthChild : uTruthTotal & uTruthChild;
-        }
-        return Node.fCompl? ~uTruthTotal : uTruthTotal;
-    }
-    if ( Node.Type == IVY_DEC_EXOR )
-    {
-        uTruthTotal = 0;
-        for ( i = 0; i < (int)Node.nFans; i++ )
-        {
-            Var = Ivy_DecGetVar( &Node, i );
-            uTruthTotal ^= Ivy_TruthDsdCompute_rec( Var >> 1, vTree );
-            assert( (Var & 1) == 0 );
-        }
-        return Node.fCompl? ~uTruthTotal : uTruthTotal;
-    }
-    assert( Node.fCompl == 0 );
-    if ( Node.Type == IVY_DEC_MUX || Node.Type == IVY_DEC_MAJ )
-    {
-        unsigned uTruthChildC, uTruthChild1, uTruthChild0;
-        int VarC, Var1, Var0;
-        VarC = Ivy_DecGetVar( &Node, 0 );
-        Var1 = Ivy_DecGetVar( &Node, 1 );
-        Var0 = Ivy_DecGetVar( &Node, 2 );
-        uTruthChildC = Ivy_TruthDsdCompute_rec( VarC >> 1, vTree );
-        uTruthChild1 = Ivy_TruthDsdCompute_rec( Var1 >> 1, vTree );
-        uTruthChild0 = Ivy_TruthDsdCompute_rec( Var0 >> 1, vTree );
-        assert( Node.Type == IVY_DEC_MAJ || (VarC & 1) == 0 );
-        uTruthChildC = (VarC & 1)? ~uTruthChildC : uTruthChildC;
-        uTruthChild1 = (Var1 & 1)? ~uTruthChild1 : uTruthChild1;
-        uTruthChild0 = (Var0 & 1)? ~uTruthChild0 : uTruthChild0;
-        if ( Node.Type == IVY_DEC_MUX )
-            return (uTruthChildC & uTruthChild1) | (~uTruthChildC & uTruthChild0);
-        else
-            return (uTruthChildC & uTruthChild1) | (uTruthChildC & uTruthChild0) | (uTruthChild1 & uTruthChild0);
-    }
-    assert( 0 );
-    return 0;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of decomposition tree for verification.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Ivy_TruthDsdCompute( Vec_Int_t * vTree )
-{
-    return Ivy_TruthDsdCompute_rec( Vec_IntSize(vTree)-1, vTree );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints the decomposition tree.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TruthDsdPrint_rec( FILE * pFile, int iNode, Vec_Int_t * vTree )
-{
-    int Var, i;
-    // get the node
-    Ivy_Dec_t Node = Ivy_IntToDec( Vec_IntEntry(vTree, iNode) );
-    // compute the node function
-    if ( Node.Type == IVY_DEC_CONST1 )
-        fprintf( pFile, "Const1%s", (Node.fCompl? "\'" : "") );
-    else if ( Node.Type == IVY_DEC_PI )
-        fprintf( pFile, "%c%s", 'a' + iNode, (Node.fCompl? "\'" : "") );
-    else if ( Node.Type == IVY_DEC_BUF )
-    {
-        Ivy_TruthDsdPrint_rec( pFile, Node.Fan0 >> 1, vTree );
-        fprintf( pFile, "%s", (Node.fCompl? "\'" : "") );
-    }
-    else if ( Node.Type == IVY_DEC_AND )
-    {
-        fprintf( pFile, "AND(" );
-        for ( i = 0; i < (int)Node.nFans; i++ )
-        {
-            Var = Ivy_DecGetVar( &Node, i );
-            Ivy_TruthDsdPrint_rec( pFile, Var >> 1, vTree );
-            fprintf( pFile, "%s", (Var & 1)? "\'" : "" );
-            if ( i != (int)Node.nFans-1 )
-                fprintf( pFile, "," );
-        }
-        fprintf( pFile, ")%s", (Node.fCompl? "\'" : "") );
-    }
-    else if ( Node.Type == IVY_DEC_EXOR )
-    {
-        fprintf( pFile, "EXOR(" );
-        for ( i = 0; i < (int)Node.nFans; i++ )
-        {
-            Var = Ivy_DecGetVar( &Node, i );
-            Ivy_TruthDsdPrint_rec( pFile, Var >> 1, vTree );
-            if ( i != (int)Node.nFans-1 )
-                fprintf( pFile, "," );
-            assert( (Var & 1) == 0 );
-        }
-        fprintf( pFile, ")%s", (Node.fCompl? "\'" : "") );
-    }
-    else if ( Node.Type == IVY_DEC_MUX || Node.Type == IVY_DEC_MAJ )
-    {
-        int VarC, Var1, Var0;
-        assert( Node.fCompl == 0 );
-        VarC = Ivy_DecGetVar( &Node, 0 );
-        Var1 = Ivy_DecGetVar( &Node, 1 );
-        Var0 = Ivy_DecGetVar( &Node, 2 );
-        fprintf( pFile, "%s", (Node.Type == IVY_DEC_MUX)? "MUX(" : "MAJ(" );
-        Ivy_TruthDsdPrint_rec( pFile, VarC >> 1, vTree );
-        fprintf( pFile, "%s", (VarC & 1)? "\'" : "" );
-        fprintf( pFile, "," );
-        Ivy_TruthDsdPrint_rec( pFile, Var1 >> 1, vTree );
-        fprintf( pFile, "%s", (Var1 & 1)? "\'" : "" );
-        fprintf( pFile, "," );
-        Ivy_TruthDsdPrint_rec( pFile, Var0 >> 1, vTree );
-        fprintf( pFile, "%s", (Var0 & 1)? "\'" : "" );
-        fprintf( pFile, ")" );
-    }
-    else assert( 0 );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Prints the decomposition tree.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TruthDsdPrint( FILE * pFile, Vec_Int_t * vTree )
-{
-    fprintf( pFile, "F = " );
-    Ivy_TruthDsdPrint_rec( pFile, Vec_IntSize(vTree)-1, vTree );
-    fprintf( pFile, "\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implement DSD in the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_ManDsdConstruct_rec( Ivy_Man_t * p, Vec_Int_t * vFront, int iNode, Vec_Int_t * vTree )
-{
-    Ivy_Obj_t * pResult, * pChild, * pNodes[16];
-    int Var, i;
-    // get the node
-    Ivy_Dec_t Node = Ivy_IntToDec( Vec_IntEntry(vTree, iNode) );
-    // compute the node function
-    if ( Node.Type == IVY_DEC_CONST1 )
-        return Ivy_NotCond( Ivy_ManConst1(p), Node.fCompl );
-    if ( Node.Type == IVY_DEC_PI )
-    {
-        pResult = Ivy_ManObj( p, Vec_IntEntry(vFront, iNode) );
-        return Ivy_NotCond( pResult, Node.fCompl );
-    }
-    if ( Node.Type == IVY_DEC_BUF )
-    {
-        pResult = Ivy_ManDsdConstruct_rec( p, vFront, Node.Fan0 >> 1, vTree );
-        return Ivy_NotCond( pResult, Node.fCompl );
-    }
-    if ( Node.Type == IVY_DEC_AND || Node.Type == IVY_DEC_EXOR )
-    {
-        for ( i = 0; i < (int)Node.nFans; i++ )
-        {
-            Var = Ivy_DecGetVar( &Node, i );
-            assert( Node.Type == IVY_DEC_AND || (Var & 1) == 0 );
-            pChild = Ivy_ManDsdConstruct_rec( p, vFront, Var >> 1, vTree );
-            pChild = Ivy_NotCond( pChild, (Var & 1) );
-            pNodes[i] = pChild;
-        }
-
-//        Ivy_MultiEval( pNodes, Node.nFans, Node.Type == IVY_DEC_AND ? IVY_AND : IVY_EXOR );
-
-        pResult = Ivy_Multi( p, pNodes, Node.nFans, Node.Type == IVY_DEC_AND ? IVY_AND : IVY_EXOR );
-        return Ivy_NotCond( pResult, Node.fCompl );
-    }
-    assert( Node.fCompl == 0 );
-    if ( Node.Type == IVY_DEC_MUX || Node.Type == IVY_DEC_MAJ )
-    {
-        int VarC, Var1, Var0;
-        VarC = Ivy_DecGetVar( &Node, 0 );
-        Var1 = Ivy_DecGetVar( &Node, 1 );
-        Var0 = Ivy_DecGetVar( &Node, 2 );
-        pNodes[0] = Ivy_ManDsdConstruct_rec( p, vFront, VarC >> 1, vTree );
-        pNodes[1] = Ivy_ManDsdConstruct_rec( p, vFront, Var1 >> 1, vTree );
-        pNodes[2] = Ivy_ManDsdConstruct_rec( p, vFront, Var0 >> 1, vTree );
-        assert( Node.Type == IVY_DEC_MAJ || (VarC & 1) == 0 );
-        pNodes[0] = Ivy_NotCond( pNodes[0], (VarC & 1) );
-        pNodes[1] = Ivy_NotCond( pNodes[1], (Var1 & 1) );
-        pNodes[2] = Ivy_NotCond( pNodes[2], (Var0 & 1) );
-        if ( Node.Type == IVY_DEC_MUX )
-            return Ivy_Mux( p, pNodes[0], pNodes[1], pNodes[2] );
-        else
-            return Ivy_Maj( p, pNodes[0], pNodes[1], pNodes[2] );
-    }
-    assert( 0 );
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implement DSD in the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_ManDsdConstruct( Ivy_Man_t * p, Vec_Int_t * vFront, Vec_Int_t * vTree )
-{
-    int Entry, i;
-    // implement latches on the frontier (TEMPORARY!!!)
-    Vec_IntForEachEntry( vFront, Entry, i )
-        Vec_IntWriteEntry( vFront, i, Ivy_LeafId(Entry) );
-    // recursively construct the tree
-    return Ivy_ManDsdConstruct_rec( p, vFront, Vec_IntSize(vTree)-1, vTree );
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TruthDsdComputePrint( unsigned uTruth )
-{
-    static Vec_Int_t * vTree = NULL;
-    if ( vTree == NULL )
-        vTree = Vec_IntAlloc( 12 );
-    if ( Ivy_TruthDsd( uTruth, vTree ) )
-        Ivy_TruthDsdPrint( stdout, vTree );
-    else
-        printf( "Undecomposable\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TruthTestOne( unsigned uTruth )
-{
-    static int Counter = 0;
-    static Vec_Int_t * vTree = NULL;
-    // decompose
-    if ( vTree == NULL )
-        vTree = Vec_IntAlloc( 12 );
-
-    if ( !Ivy_TruthDsd( uTruth, vTree ) )
-    {
-//        printf( "Undecomposable\n" );
-    }
-    else
-    {
-//        nTruthDsd++;
-        printf( "%5d : ", Counter++ );
-        Extra_PrintBinary( stdout, &uTruth, 32 );
-        printf( "  " );
-        Ivy_TruthDsdPrint( stdout, vTree );
-        if ( uTruth != Ivy_TruthDsdCompute(vTree) )
-            printf( "Verification failed.\n" );
-    }
-//    Vec_IntFree( vTree );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TruthTest()
-{
-    FILE * pFile;
-    char Buffer[100];
-    unsigned uTruth;
-    int i;
-
-    pFile = fopen( "npn4.txt", "r" );
-    for ( i = 0; i < 222; i++ )
-//    pFile = fopen( "npn5.txt", "r" );
-//    for ( i = 0; i < 616126; i++ )
-    {
-        fscanf( pFile, "%s", Buffer );
-        Extra_ReadHexadecimal( &uTruth, Buffer+2, 4 );
-//        Extra_ReadHexadecimal( &uTruth, Buffer+2, 5 );
-        uTruth |= (uTruth << 16);
-//        uTruth = ~uTruth;
-        Ivy_TruthTestOne( uTruth );
-    }
-    fclose( pFile );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TruthTest3()
-{
-    FILE * pFile;
-    char Buffer[100];
-    unsigned uTruth;
-    int i;
-
-    pFile = fopen( "npn3.txt", "r" );
-    for ( i = 0; i < 14; i++ )
-    {
-        fscanf( pFile, "%s", Buffer );
-        Extra_ReadHexadecimal( &uTruth, Buffer+2, 3 );
-        uTruth = uTruth | (uTruth << 8) | (uTruth << 16) | (uTruth << 24);
-        Ivy_TruthTestOne( uTruth );
-    }
-    fclose( pFile );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TruthTest5()
-{
-    FILE * pFile;
-    char Buffer[100];
-    unsigned uTruth;
-    int i;
-
-//    pFile = fopen( "npn4.txt", "r" );
-//    for ( i = 0; i < 222; i++ )
-    pFile = fopen( "npn5.txt", "r" );
-    for ( i = 0; i < 616126; i++ )
-    {
-        fscanf( pFile, "%s", Buffer );
-//        Extra_ReadHexadecimal( &uTruth, Buffer+2, 4 );
-        Extra_ReadHexadecimal( &uTruth, Buffer+2, 5 );
-//        uTruth |= (uTruth << 16);
-//        uTruth = ~uTruth;
-        Ivy_TruthTestOne( uTruth );
-    }
-    fclose( pFile );
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyFanout.c b/src/aig/ivy/ivyFanout.c
deleted file mode 100644
index 3930186a..00000000
--- a/src/aig/ivy/ivyFanout.c
+++ /dev/null
@@ -1,309 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyFanout.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Representation of the fanouts.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyFanout.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// getting hold of the next fanout of the node
-static inline Ivy_Obj_t * Ivy_ObjNextFanout( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout )
-{
-    assert( !Ivy_IsComplement(pObj) );
-    assert( !Ivy_IsComplement(pFanout) );
-    if ( pFanout == NULL )
-        return NULL;
-    if ( Ivy_ObjFanin0(pFanout) == pObj )
-        return pFanout->pNextFan0;
-    assert( Ivy_ObjFanin1(pFanout) == pObj );
-    return pFanout->pNextFan1;
-}
-
-// getting hold of the previous fanout of the node
-static inline Ivy_Obj_t * Ivy_ObjPrevFanout( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout )
-{
-    assert( !Ivy_IsComplement(pObj) );
-    assert( !Ivy_IsComplement(pFanout) );
-    if ( pFanout == NULL )
-        return NULL;
-    if ( Ivy_ObjFanin0(pFanout) == pObj )
-        return pFanout->pPrevFan0;
-    assert( Ivy_ObjFanin1(pFanout) == pObj );
-    return pFanout->pPrevFan1;
-}
-
-// getting hold of the place where the next fanout will be attached
-static inline Ivy_Obj_t ** Ivy_ObjNextFanoutPlace( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout )
-{
-    assert( !Ivy_IsComplement(pObj) );
-    assert( !Ivy_IsComplement(pFanout) );
-    if ( Ivy_ObjFanin0(pFanout) == pObj )
-        return &pFanout->pNextFan0;
-    assert( Ivy_ObjFanin1(pFanout) == pObj );
-    return &pFanout->pNextFan1;
-}
-
-// getting hold of the place where the next fanout will be attached
-static inline Ivy_Obj_t ** Ivy_ObjPrevFanoutPlace( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout )
-{
-    assert( !Ivy_IsComplement(pObj) );
-    assert( !Ivy_IsComplement(pFanout) );
-    if ( Ivy_ObjFanin0(pFanout) == pObj )
-        return &pFanout->pPrevFan0;
-    assert( Ivy_ObjFanin1(pFanout) == pObj );
-    return &pFanout->pPrevFan1;
-}
-
-// getting hold of the place where the next fanout will be attached
-static inline Ivy_Obj_t ** Ivy_ObjPrevNextFanoutPlace( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout )
-{
-    Ivy_Obj_t * pTemp;
-    assert( !Ivy_IsComplement(pObj) );
-    assert( !Ivy_IsComplement(pFanout) );
-    pTemp = Ivy_ObjPrevFanout(pObj, pFanout);
-    if ( pTemp == NULL )
-        return &pObj->pFanout;
-    if ( Ivy_ObjFanin0(pTemp) == pObj )
-        return &pTemp->pNextFan0;
-    assert( Ivy_ObjFanin1(pTemp) == pObj );
-    return &pTemp->pNextFan1;
-}
-
-// getting hold of the place where the next fanout will be attached
-static inline Ivy_Obj_t ** Ivy_ObjNextPrevFanoutPlace( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout )
-{
-    Ivy_Obj_t * pTemp;
-    assert( !Ivy_IsComplement(pObj) );
-    assert( !Ivy_IsComplement(pFanout) );
-    pTemp = Ivy_ObjNextFanout(pObj, pFanout);
-    if ( pTemp == NULL )
-        return NULL;
-    if ( Ivy_ObjFanin0(pTemp) == pObj )
-        return &pTemp->pPrevFan0;
-    assert( Ivy_ObjFanin1(pTemp) == pObj );
-    return &pTemp->pPrevFan1;
-}
-
-// iterator through the fanouts of the node
-#define Ivy_ObjForEachFanoutInt( pObj, pFanout )                 \
-    for ( pFanout = (pObj)->pFanout; pFanout;                    \
-          pFanout = Ivy_ObjNextFanout(pObj, pFanout) )
-
-// safe iterator through the fanouts of the node
-#define Ivy_ObjForEachFanoutIntSafe( pObj, pFanout, pFanout2 )   \
-    for ( pFanout  = (pObj)->pFanout,                            \
-          pFanout2 = Ivy_ObjNextFanout(pObj, pFanout);           \
-          pFanout;                                               \
-          pFanout  = pFanout2,                                   \
-          pFanout2 = Ivy_ObjNextFanout(pObj, pFanout) )
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the fanout representation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManStartFanout( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    assert( !p->fFanout );
-    p->fFanout = 1;
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        if ( Ivy_ObjFanin0(pObj) )
-            Ivy_ObjAddFanout( p, Ivy_ObjFanin0(pObj), pObj );
-        if ( Ivy_ObjFanin1(pObj) )
-            Ivy_ObjAddFanout( p, Ivy_ObjFanin1(pObj), pObj );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the fanout representation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManStopFanout( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    assert( p->fFanout );
-    p->fFanout = 0;
-    Ivy_ManForEachObj( p, pObj, i )
-        pObj->pFanout = pObj->pNextFan0 = pObj->pNextFan1 = pObj->pPrevFan0 = pObj->pPrevFan1 = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Add the fanout.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjAddFanout( Ivy_Man_t * p, Ivy_Obj_t * pFanin, Ivy_Obj_t * pFanout )
-{
-    assert( p->fFanout );
-    if ( pFanin->pFanout )
-    {
-        *Ivy_ObjNextFanoutPlace(pFanin, pFanout) = pFanin->pFanout;
-        *Ivy_ObjPrevFanoutPlace(pFanin, pFanin->pFanout) = pFanout;
-    }
-    pFanin->pFanout = pFanout;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes the fanout.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjDeleteFanout( Ivy_Man_t * p, Ivy_Obj_t * pFanin, Ivy_Obj_t * pFanout )
-{
-    Ivy_Obj_t ** ppPlace1, ** ppPlace2, ** ppPlaceN;
-    assert( pFanin->pFanout != NULL );
-
-    ppPlace1 = Ivy_ObjNextFanoutPlace(pFanin, pFanout);
-    ppPlaceN = Ivy_ObjPrevNextFanoutPlace(pFanin, pFanout);
-    assert( *ppPlaceN == pFanout );
-    if ( ppPlaceN )
-        *ppPlaceN = *ppPlace1;
-
-    ppPlace2 = Ivy_ObjPrevFanoutPlace(pFanin, pFanout);
-    ppPlaceN = Ivy_ObjNextPrevFanoutPlace(pFanin, pFanout);
-    assert( ppPlaceN == NULL || *ppPlaceN == pFanout );
-    if ( ppPlaceN )
-        *ppPlaceN = *ppPlace2;
-
-    *ppPlace1 = NULL;
-    *ppPlace2 = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Replaces the fanout of pOld to be pFanoutNew.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjPatchFanout( Ivy_Man_t * p, Ivy_Obj_t * pFanin, Ivy_Obj_t * pFanoutOld, Ivy_Obj_t * pFanoutNew )
-{
-    Ivy_Obj_t ** ppPlace;
-    ppPlace = Ivy_ObjPrevNextFanoutPlace(pFanin, pFanoutOld);
-    assert( *ppPlace == pFanoutOld );
-    if ( ppPlace )
-        *ppPlace = pFanoutNew;
-    ppPlace = Ivy_ObjNextPrevFanoutPlace(pFanin, pFanoutOld);
-    assert( ppPlace == NULL || *ppPlace == pFanoutOld );
-    if ( ppPlace )
-        *ppPlace = pFanoutNew;
-    // assuming that pFanoutNew already points to the next fanout
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts iteration through the fanouts.]
-
-  Description [Copies the currently available fanouts into the array.]
-               
-  SideEffects [Can be used while the fanouts are being removed.]
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjCollectFanouts( Ivy_Man_t * p, Ivy_Obj_t * pObj, Vec_Ptr_t * vArray )
-{
-    Ivy_Obj_t * pFanout;
-    assert( p->fFanout );
-    assert( !Ivy_IsComplement(pObj) );
-    Vec_PtrClear( vArray );
-    Ivy_ObjForEachFanoutInt( pObj, pFanout )
-        Vec_PtrPush( vArray, pFanout );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reads one fanout.]
-
-  Description [Returns fanout if there is only one fanout.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_ObjReadFirstFanout( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    return pObj->pFanout;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reads one fanout.]
-
-  Description [Returns fanout if there is only one fanout.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ObjFanoutNum( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pFanout;
-    int Counter = 0;
-    Ivy_ObjForEachFanoutInt( pObj, pFanout )
-        Counter++;
-    return Counter;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyFastMap.c b/src/aig/ivy/ivyFastMap.c
deleted file mode 100644
index c4a043f2..00000000
--- a/src/aig/ivy/ivyFastMap.c
+++ /dev/null
@@ -1,1593 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyFastMap.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Fast FPGA mapping.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyFastMap.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-#define IVY_INFINITY   10000
-
-typedef struct Ivy_SuppMan_t_ Ivy_SuppMan_t;
-struct Ivy_SuppMan_t_ 
-{
-    int         nLimit;    // the limit on the number of inputs
-    int         nObjs;     // the number of entries
-    int         nSize;     // size of each entry in bytes
-    char *      pMem;      // memory allocated
-    Vec_Vec_t * vLuts;     // the array of nodes used in the mapping
-};
-
-typedef struct Ivy_Supp_t_ Ivy_Supp_t;
-struct Ivy_Supp_t_ 
-{
-    char        nSize;     // the number of support nodes
-    char        fMark;     // multipurpose mask
-    char        fMark2;    // multipurpose mask 
-    char        fMark3;    // multipurpose mask 
-    int         nRefs;     // the number of references
-    short       Delay;     // the delay of the node
-    short       DelayR;    // the reverse delay of the node
-    int         pArray[0]; // the support nodes
-};
-
-static inline Ivy_Supp_t * Ivy_ObjSupp( Ivy_Man_t * pAig, Ivy_Obj_t * pObj )      
-{ 
-    return (Ivy_Supp_t *)(((Ivy_SuppMan_t*)pAig->pData)->pMem + pObj->Id * ((Ivy_SuppMan_t*)pAig->pData)->nSize); 
-}
-static inline Ivy_Supp_t * Ivy_ObjSuppStart( Ivy_Man_t * pAig, Ivy_Obj_t * pObj ) 
-{ 
-    Ivy_Supp_t * pSupp;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    pSupp->fMark = 0;
-    pSupp->Delay = 0;
-    pSupp->nSize = 1;
-    pSupp->pArray[0] = pObj->Id;
-    return pSupp;
-}
-
-static void Ivy_FastMapPrint( Ivy_Man_t * pAig, int Delay, int Area, int Time, char * pStr );
-static int  Ivy_FastMapDelay( Ivy_Man_t * pAig );
-static int  Ivy_FastMapArea( Ivy_Man_t * pAig );
-static void Ivy_FastMapNode( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit );
-static void Ivy_FastMapNodeArea( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit );
-static int  Ivy_FastMapMerge( Ivy_Supp_t * pSupp0, Ivy_Supp_t * pSupp1, Ivy_Supp_t * pSupp, int nLimit );
-static void Ivy_FastMapRequired( Ivy_Man_t * pAig, int Delay, int fSetInter );
-static void Ivy_FastMapRecover( Ivy_Man_t * pAig, int nLimit );
-static int  Ivy_FastMapNodeDelay( Ivy_Man_t * pAig, Ivy_Obj_t * pObj );
-static int  Ivy_FastMapNodeAreaRefed( Ivy_Man_t * pAig, Ivy_Obj_t * pObj );
-static int  Ivy_FastMapNodeAreaDerefed( Ivy_Man_t * pAig, Ivy_Obj_t * pObj );
-static void Ivy_FastMapNodeRecover( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront, Vec_Ptr_t * vFrontOld );
-static int  Ivy_FastMapNodeRef( Ivy_Man_t * pAig, Ivy_Obj_t * pObj );
-static int  Ivy_FastMapNodeDeref( Ivy_Man_t * pAig, Ivy_Obj_t * pObj );
-
-
-extern int s_MappingTime;
-extern int s_MappingMem;
-
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fast K-LUT mapping of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapPerform( Ivy_Man_t * pAig, int nLimit, int fRecovery, int fVerbose )
-{
-    Ivy_SuppMan_t * pMan;
-    Ivy_Obj_t * pObj;
-    int i, Delay, Area, clk, clkTotal = clock();
-    // start the memory for supports
-    pMan = ALLOC( Ivy_SuppMan_t, 1 );
-    memset( pMan, 0, sizeof(Ivy_SuppMan_t) );
-    pMan->nLimit = nLimit;
-    pMan->nObjs  = Ivy_ManObjIdMax(pAig) + 1;
-    pMan->nSize  = sizeof(Ivy_Supp_t) + nLimit * sizeof(int);
-    pMan->pMem   = (char *)malloc( pMan->nObjs * pMan->nSize );
-    memset( pMan->pMem, 0, pMan->nObjs * pMan->nSize );
-    pMan->vLuts  = Vec_VecAlloc( 100 );
-    pAig->pData  = pMan;
-clk = clock();
-    // set the PI mapping
-    Ivy_ObjSuppStart( pAig, Ivy_ManConst1(pAig) );
-    Ivy_ManForEachPi( pAig, pObj, i )
-        Ivy_ObjSuppStart( pAig, pObj );
-    // iterate through all nodes in the topological order
-    Ivy_ManForEachNode( pAig, pObj, i )
-        Ivy_FastMapNode( pAig, pObj, nLimit );
-    // find the best arrival time and area
-    Delay = Ivy_FastMapDelay( pAig );
-    Area = Ivy_FastMapArea(pAig);
-    if ( fVerbose )
-        Ivy_FastMapPrint( pAig, Delay, Area, clock() - clk, "Delay oriented mapping: " );
-
-// 2-1-2 (doing 2-1-2-1-2 improves 0.5%)
-
-    if ( fRecovery )
-    {
-clk = clock();
-    Ivy_FastMapRequired( pAig, Delay, 0 );
-    // remap the nodes
-    Ivy_FastMapRecover( pAig, nLimit );
-    Delay = Ivy_FastMapDelay( pAig );
-    Area = Ivy_FastMapArea(pAig);
-    if ( fVerbose )
-        Ivy_FastMapPrint( pAig, Delay, Area, clock() - clk, "Area recovery 2       : " );
-
-clk = clock();
-    Ivy_FastMapRequired( pAig, Delay, 0 );
-    // iterate through all nodes in the topological order
-    Ivy_ManForEachNode( pAig, pObj, i )
-        Ivy_FastMapNodeArea( pAig, pObj, nLimit );
-    Delay = Ivy_FastMapDelay( pAig );
-    Area = Ivy_FastMapArea(pAig);
-    if ( fVerbose )
-        Ivy_FastMapPrint( pAig, Delay, Area, clock() - clk, "Area recovery 1       : " );
-
-clk = clock();
-    Ivy_FastMapRequired( pAig, Delay, 0 );
-    // remap the nodes
-    Ivy_FastMapRecover( pAig, nLimit );
-    Delay = Ivy_FastMapDelay( pAig );
-    Area = Ivy_FastMapArea(pAig);
-    if ( fVerbose )
-        Ivy_FastMapPrint( pAig, Delay, Area, clock() - clk, "Area recovery 2       : " );
-    }
-
-
-    s_MappingTime = clock() - clkTotal;
-    s_MappingMem = pMan->nObjs * pMan->nSize;
-/*
-    {
-        Vec_Ptr_t * vNodes;
-        vNodes = Vec_PtrAlloc( 100 );
-        Vec_VecForEachEntry( pMan->vLuts, pObj, i, k )
-            Vec_PtrPush( vNodes, pObj );
-        Ivy_ManShow( pAig, 0, vNodes );
-        Vec_PtrFree( vNodes );
-    }
-*/
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Cleans memory used for decomposition.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapStop( Ivy_Man_t * pAig )
-{
-    Ivy_SuppMan_t * p = pAig->pData;
-    Vec_VecFree( p->vLuts );
-    free( p->pMem );
-    free( p );
-    pAig->pData = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints statistics.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapPrint( Ivy_Man_t * pAig, int Delay, int Area, int Time, char * pStr )
-{
-    printf( "%s : Delay = %3d. Area = %6d. ", pStr, Delay, Area );
-    PRT( "Time", Time );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes delay after LUT mapping.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapDelay( Ivy_Man_t * pAig )
-{
-    Ivy_Supp_t * pSupp;
-    Ivy_Obj_t * pObj;
-    int i, DelayMax = 0;
-    Ivy_ManForEachPo( pAig, pObj, i )
-    {
-        pObj = Ivy_ObjFanin0(pObj);
-        if ( !Ivy_ObjIsNode(pObj) )
-            continue;
-        pSupp = Ivy_ObjSupp( pAig, pObj );
-        if ( DelayMax < pSupp->Delay )
-            DelayMax = pSupp->Delay;
-    }
-    return DelayMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area after mapping.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapArea_rec( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, Vec_Vec_t * vLuts )
-{
-    Ivy_Supp_t * pSupp;
-    int i, Counter;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    // skip visited nodes and PIs
-    if ( pSupp->fMark || pSupp->nSize == 1 )
-        return 0;
-    pSupp->fMark = 1;
-    // compute the area of this node
-    Counter = 0;
-    for ( i = 0; i < pSupp->nSize; i++ )
-        Counter += Ivy_FastMapArea_rec( pAig, Ivy_ManObj(pAig, pSupp->pArray[i]), vLuts );
-    // add the node to the array of LUTs
-    Vec_VecPush( vLuts, pSupp->Delay, pObj );
-    return 1 + Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes area after mapping.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapArea( Ivy_Man_t * pAig )
-{
-    Vec_Vec_t * vLuts;
-    Ivy_Obj_t * pObj;
-    int i, Counter = 0;
-    // get the array to store the nodes
-    vLuts = ((Ivy_SuppMan_t *)pAig->pData)->vLuts;
-    Vec_VecClear( vLuts );
-    // explore starting from each node
-    Ivy_ManForEachPo( pAig, pObj, i )
-        Counter += Ivy_FastMapArea_rec( pAig, Ivy_ObjFanin0(pObj), vLuts );
-    // clean the marks
-    Ivy_ManForEachNode( pAig, pObj, i )
-        Ivy_ObjSupp( pAig, pObj )->fMark = 0;
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fast mapping for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Ivy_ObjIsNodeInt1( Ivy_Obj_t * pObj )
-{
-    return Ivy_ObjIsNode(pObj) && Ivy_ObjRefs(pObj) == 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fast mapping for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Ivy_ObjIsNodeInt2( Ivy_Obj_t * pObj )
-{
-    return Ivy_ObjIsNode(pObj) && Ivy_ObjRefs(pObj) <= 2;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fast mapping for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline void Vec_IntSelectSort( int * pArray, int nSize )
-{
-    int temp, i, j, best_i;
-    for ( i = 0; i < nSize-1; i++ )
-    {
-        best_i = i;
-        for ( j = i+1; j < nSize; j++ )
-            if ( pArray[j] < pArray[best_i] )
-                best_i = j;
-        temp = pArray[i]; 
-        pArray[i] = pArray[best_i]; 
-        pArray[best_i] = temp;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fast mapping for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Vec_IntRemoveDup( int * pArray, int nSize )
-{
-    int i, k;
-    if ( nSize < 2 )
-        return nSize;
-    for ( i = k = 1; i < nSize; i++ )
-        if ( pArray[i] != pArray[i-1] )
-            pArray[k++] = pArray[i];
-    return k;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fast mapping for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNodeArea2( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit )
-{
-    static int Store[32], StoreSize;
-    static char Supp0[16], Supp1[16];
-    static Ivy_Supp_t * pTemp0 = (Ivy_Supp_t *)Supp0;
-    static Ivy_Supp_t * pTemp1 = (Ivy_Supp_t *)Supp1;
-    Ivy_Obj_t * pFanin0, * pFanin1;
-    Ivy_Supp_t * pSupp0, * pSupp1, * pSupp;
-    int RetValue, DelayOld;
-    assert( nLimit <= 32 );
-    assert( Ivy_ObjIsNode(pObj) );
-    // get the fanins
-    pFanin0 = Ivy_ObjFanin0(pObj);
-    pFanin1 = Ivy_ObjFanin1(pObj);
-    // get the supports
-    pSupp0 = Ivy_ObjSupp( pAig, pFanin0 );
-    pSupp1 = Ivy_ObjSupp( pAig, pFanin1 );
-    pSupp  = Ivy_ObjSupp( pAig, pObj );
-    assert( pSupp->fMark == 0 );
-    // get the old delay of the node
-    DelayOld = Ivy_FastMapNodeDelay(pAig, pObj);
-    assert( DelayOld <= pSupp->DelayR );
-    // copy the current cut
-    memcpy( Store, pSupp->pArray, sizeof(int) * pSupp->nSize );
-    StoreSize = pSupp->nSize;
-    // get the fanin support
-    if ( Ivy_ObjRefs(pFanin0) > 1 && pSupp0->Delay < pSupp->DelayR )
-    {
-        pSupp0 = pTemp0;
-        pSupp0->nSize = 1;
-        pSupp0->pArray[0] = Ivy_ObjFaninId0(pObj);
-    }
-    // get the fanin support
-    if ( Ivy_ObjRefs(pFanin1) > 1 && pSupp1->Delay < pSupp->DelayR )
-    {
-        pSupp1 = pTemp1;
-        pSupp1->nSize = 1;
-        pSupp1->pArray[0] = Ivy_ObjFaninId1(pObj);
-    }
-    // merge the cuts
-    if ( pSupp0->nSize < pSupp1->nSize )
-        RetValue = Ivy_FastMapMerge( pSupp1, pSupp0, pSupp, nLimit );
-    else
-        RetValue = Ivy_FastMapMerge( pSupp0, pSupp1, pSupp, nLimit );
-    if ( !RetValue )
-    {
-        pSupp->nSize = 2;
-        pSupp->pArray[0] = Ivy_ObjFaninId0(pObj);
-        pSupp->pArray[1] = Ivy_ObjFaninId1(pObj);
-    }
-    // check the resulting delay
-    pSupp->Delay = Ivy_FastMapNodeDelay(pAig, pObj);
-    if ( pSupp->Delay > pSupp->DelayR )
-    {
-        pSupp->nSize = StoreSize;
-        memcpy( pSupp->pArray, Store, sizeof(int) * pSupp->nSize );
-        pSupp->Delay = DelayOld;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fast mapping for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNodeArea( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit )
-{
-    static int Store[32], StoreSize;
-    static char Supp0[16], Supp1[16];
-    static Ivy_Supp_t * pTemp0 = (Ivy_Supp_t *)Supp0;
-    static Ivy_Supp_t * pTemp1 = (Ivy_Supp_t *)Supp1;
-    Ivy_Obj_t * pFanin0, * pFanin1;
-    Ivy_Supp_t * pSupp0, * pSupp1, * pSupp;
-    int RetValue, DelayOld, RefsOld;
-    int AreaBef, AreaAft;
-    assert( nLimit <= 32 );
-    assert( Ivy_ObjIsNode(pObj) );
-    // get the fanins
-    pFanin0 = Ivy_ObjFanin0(pObj);
-    pFanin1 = Ivy_ObjFanin1(pObj);
-    // get the supports
-    pSupp0 = Ivy_ObjSupp( pAig, pFanin0 );
-    pSupp1 = Ivy_ObjSupp( pAig, pFanin1 );
-    pSupp  = Ivy_ObjSupp( pAig, pObj );
-    assert( pSupp->fMark == 0 );
-
-    // get the area
-    if ( pSupp->nRefs == 0 )
-        AreaBef = Ivy_FastMapNodeAreaDerefed( pAig, pObj );
-    else
-        AreaBef = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-//    if ( AreaBef == 1 )
-//        return;
-
-    // deref the cut if the node is refed
-    if ( pSupp->nRefs != 0 )
-        Ivy_FastMapNodeDeref( pAig, pObj );
-
-    // get the old delay of the node
-    DelayOld = Ivy_FastMapNodeDelay(pAig, pObj);
-    assert( DelayOld <= pSupp->DelayR );
-    // copy the current cut
-    memcpy( Store, pSupp->pArray, sizeof(int) * pSupp->nSize );
-    StoreSize = pSupp->nSize;
-    // get the fanin support
-    if ( Ivy_ObjRefs(pFanin0) > 2 && pSupp0->Delay < pSupp->DelayR )
-//    if ( pSupp0->nRefs > 0 && pSupp0->Delay < pSupp->DelayR ) // this leads to 2% worse results
-    {
-        pSupp0 = pTemp0;
-        pSupp0->nSize = 1;
-        pSupp0->pArray[0] = Ivy_ObjFaninId0(pObj);
-    }
-    // get the fanin support
-    if ( Ivy_ObjRefs(pFanin1) > 2 && pSupp1->Delay < pSupp->DelayR )
-//    if ( pSupp1->nRefs > 0 && pSupp1->Delay < pSupp->DelayR )
-    {
-        pSupp1 = pTemp1;
-        pSupp1->nSize = 1;
-        pSupp1->pArray[0] = Ivy_ObjFaninId1(pObj);
-    }
-    // merge the cuts
-    if ( pSupp0->nSize < pSupp1->nSize )
-        RetValue = Ivy_FastMapMerge( pSupp1, pSupp0, pSupp, nLimit );
-    else
-        RetValue = Ivy_FastMapMerge( pSupp0, pSupp1, pSupp, nLimit );
-    if ( !RetValue )
-    {
-        pSupp->nSize = 2;
-        pSupp->pArray[0] = Ivy_ObjFaninId0(pObj);
-        pSupp->pArray[1] = Ivy_ObjFaninId1(pObj);
-    }
-
-    // check the resulting delay
-    pSupp->Delay = Ivy_FastMapNodeDelay(pAig, pObj);
-
-    RefsOld = pSupp->nRefs; pSupp->nRefs = 0;
-    AreaAft = Ivy_FastMapNodeAreaDerefed( pAig, pObj );
-    pSupp->nRefs = RefsOld;
-
-    if ( AreaAft > AreaBef || pSupp->Delay > pSupp->DelayR )
-//    if ( pSupp->Delay > pSupp->DelayR )
-    {
-        pSupp->nSize = StoreSize;
-        memcpy( pSupp->pArray, Store, sizeof(int) * pSupp->nSize );
-        pSupp->Delay = DelayOld;
-//        printf( "-" );
-    }
-//    else
-//        printf( "+" );
-
-    if ( pSupp->nRefs != 0 )
-        Ivy_FastMapNodeRef( pAig, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fast mapping for one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNode( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit )
-{
-    Ivy_Supp_t * pSupp0, * pSupp1, * pSupp;
-    int fFaninParam = 2;
-    int RetValue;
-    assert( Ivy_ObjIsNode(pObj) );
-    // get the supports
-    pSupp0 = Ivy_ObjSupp( pAig, Ivy_ObjFanin0(pObj) );
-    pSupp1 = Ivy_ObjSupp( pAig, Ivy_ObjFanin1(pObj) );
-    pSupp  = Ivy_ObjSupp( pAig, pObj );
-    pSupp->fMark = 0;
-    // get the delays
-    if ( pSupp0->Delay == pSupp1->Delay )
-        pSupp->Delay = (pSupp0->Delay == 0) ? pSupp0->Delay + 1: pSupp0->Delay;
-    else if ( pSupp0->Delay > pSupp1->Delay )
-    {
-        pSupp->Delay = pSupp0->Delay;
-        pSupp1 = Ivy_ObjSupp( pAig, Ivy_ManConst1(pAig) );
-        pSupp1->pArray[0] = Ivy_ObjFaninId1(pObj);
-    }
-    else // if ( pSupp0->Delay < pSupp1->Delay )
-    {
-        pSupp->Delay = pSupp1->Delay;
-        pSupp0 = Ivy_ObjSupp( pAig, Ivy_ManConst1(pAig) );
-        pSupp0->pArray[0] = Ivy_ObjFaninId0(pObj);
-    }
-    // merge the cuts
-    if ( pSupp0->nSize < pSupp1->nSize )
-        RetValue = Ivy_FastMapMerge( pSupp1, pSupp0, pSupp, nLimit );
-    else
-        RetValue = Ivy_FastMapMerge( pSupp0, pSupp1, pSupp, nLimit );
-    if ( !RetValue )
-    {
-        pSupp->Delay++;
-        if ( fFaninParam == 2 )
-        {
-            pSupp->nSize = 2;
-            pSupp->pArray[0] = Ivy_ObjFaninId0(pObj);
-            pSupp->pArray[1] = Ivy_ObjFaninId1(pObj);
-        }
-        else if ( fFaninParam == 3 )
-        {
-            Ivy_Obj_t * pFanin0, * pFanin1, * pFaninA, * pFaninB;
-            pFanin0 = Ivy_ObjFanin0(pObj);
-            pFanin1 = Ivy_ObjFanin1(pObj);
-            pSupp->nSize = 0;
-            // process the first fanin
-            if ( Ivy_ObjIsNodeInt1(pFanin0) )
-            {
-                pFaninA = Ivy_ObjFanin0(pFanin0);
-                pFaninB = Ivy_ObjFanin1(pFanin0);
-                if ( Ivy_ObjIsNodeInt1(pFaninA) && Ivy_ObjIsNodeInt1(pFaninB) )
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFanin0);
-                else
-                {
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFaninA);
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFaninB);
-                }
-            }
-            else
-                pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFanin0);
-            // process the second fanin
-            if ( Ivy_ObjIsNodeInt1(pFanin1) )
-            {
-                pFaninA = Ivy_ObjFanin0(pFanin1);
-                pFaninB = Ivy_ObjFanin1(pFanin1);
-                if ( Ivy_ObjIsNodeInt1(pFaninA) && Ivy_ObjIsNodeInt1(pFaninB) )
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFanin1);
-                else
-                {
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFaninA);
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFaninB);
-                }
-            }
-            else
-                pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFanin1);
-            // sort the fanins
-            Vec_IntSelectSort( pSupp->pArray, pSupp->nSize );
-            pSupp->nSize = Vec_IntRemoveDup( pSupp->pArray, pSupp->nSize );
-            assert( pSupp->pArray[0] < pSupp->pArray[1] );
-        }
-        else if ( fFaninParam == 4 )
-        {
-            Ivy_Obj_t * pFanin0, * pFanin1, * pFaninA, * pFaninB;
-            pFanin0 = Ivy_ObjFanin0(pObj);
-            pFanin1 = Ivy_ObjFanin1(pObj);
-            pSupp->nSize = 0;
-            // consider the case when exactly one of them is internal
-            if ( Ivy_ObjIsNodeInt1(pFanin0) ^ Ivy_ObjIsNodeInt1(pFanin1) )
-            {
-                pSupp0 = Ivy_ObjSupp( pAig, Ivy_ObjFanin0(pObj) );
-                pSupp1 = Ivy_ObjSupp( pAig, Ivy_ObjFanin1(pObj) );
-                if ( Ivy_ObjIsNodeInt1(pFanin0) && pSupp0->nSize < nLimit )
-                {
-                    pSupp->Delay = IVY_MAX( pSupp0->Delay, pSupp1->Delay + 1 );
-                    pSupp1 = Ivy_ObjSupp( pAig, Ivy_ManConst1(pAig) );
-                    pSupp1->pArray[0] = Ivy_ObjId(pFanin1);
-                    // merge the cuts
-                    RetValue = Ivy_FastMapMerge( pSupp0, pSupp1, pSupp, nLimit );
-                    assert( RetValue );
-                    assert( pSupp->nSize > 1 );
-                    return;
-                }
-                if ( Ivy_ObjIsNodeInt1(pFanin1) && pSupp1->nSize < nLimit )
-                {
-                    pSupp->Delay = IVY_MAX( pSupp1->Delay, pSupp0->Delay + 1 );
-                    pSupp0 = Ivy_ObjSupp( pAig, Ivy_ManConst1(pAig) );
-                    pSupp0->pArray[0] = Ivy_ObjId(pFanin0);
-                    // merge the cuts
-                    RetValue = Ivy_FastMapMerge( pSupp1, pSupp0, pSupp, nLimit );
-                    assert( RetValue );
-                    assert( pSupp->nSize > 1 );
-                    return;
-                }
-            }
-            // process the first fanin
-            if ( Ivy_ObjIsNodeInt1(pFanin0) )
-            {
-                pFaninA = Ivy_ObjFanin0(pFanin0);
-                pFaninB = Ivy_ObjFanin1(pFanin0);
-                if ( Ivy_ObjIsNodeInt1(pFaninA) && Ivy_ObjIsNodeInt1(pFaninB) )
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFanin0);
-                else
-                {
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFaninA);
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFaninB);
-                }
-            }
-            else
-                pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFanin0);
-            // process the second fanin
-            if ( Ivy_ObjIsNodeInt1(pFanin1) )
-            {
-                pFaninA = Ivy_ObjFanin0(pFanin1);
-                pFaninB = Ivy_ObjFanin1(pFanin1);
-                if ( Ivy_ObjIsNodeInt1(pFaninA) && Ivy_ObjIsNodeInt1(pFaninB) )
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFanin1);
-                else
-                {
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFaninA);
-                    pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFaninB);
-                }
-            }
-            else
-                pSupp->pArray[pSupp->nSize++] = Ivy_ObjId(pFanin1);
-            // sort the fanins
-            Vec_IntSelectSort( pSupp->pArray, pSupp->nSize );
-            pSupp->nSize = Vec_IntRemoveDup( pSupp->pArray, pSupp->nSize );
-            assert( pSupp->pArray[0] < pSupp->pArray[1] );
-            assert( pSupp->nSize > 1 );
-        }
-    }
-    assert( pSupp->Delay > 0 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Merges two supports]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapMerge( Ivy_Supp_t * pSupp0, Ivy_Supp_t * pSupp1, Ivy_Supp_t * pSupp, int nLimit )
-{ 
-    int i, k, c;
-    assert( pSupp0->nSize >= pSupp1->nSize );
-    // the case of the largest cut sizes
-    if ( pSupp0->nSize == nLimit && pSupp1->nSize == nLimit )
-    {
-        for ( i = 0; i < pSupp0->nSize; i++ )
-            if ( pSupp0->pArray[i] != pSupp1->pArray[i] )
-                return 0;
-        for ( i = 0; i < pSupp0->nSize; i++ )
-            pSupp->pArray[i] = pSupp0->pArray[i];
-        pSupp->nSize = pSupp0->nSize;
-        return 1;
-    }
-    // the case when one of the cuts is the largest
-    if ( pSupp0->nSize == nLimit )
-    {
-        for ( i = 0; i < pSupp1->nSize; i++ )
-        {
-            for ( k = pSupp0->nSize - 1; k >= 0; k-- )
-                if ( pSupp0->pArray[k] == pSupp1->pArray[i] )
-                    break;
-            if ( k == -1 ) // did not find
-                return 0;
-        }
-        for ( i = 0; i < pSupp0->nSize; i++ )
-            pSupp->pArray[i] = pSupp0->pArray[i];
-        pSupp->nSize = pSupp0->nSize;
-        return 1;
-    }
-
-    // compare two cuts with different numbers
-    i = k = 0;
-    for ( c = 0; c < nLimit; c++ )
-    {
-        if ( k == pSupp1->nSize )
-        {
-            if ( i == pSupp0->nSize )
-            {
-                pSupp->nSize = c;
-                return 1;
-            }
-            pSupp->pArray[c] = pSupp0->pArray[i++];
-            continue;
-        }
-        if ( i == pSupp0->nSize )
-        {
-            if ( k == pSupp1->nSize )
-            {
-                pSupp->nSize = c;
-                return 1;
-            }
-            pSupp->pArray[c] = pSupp1->pArray[k++];
-            continue;
-        }
-        if ( pSupp0->pArray[i] < pSupp1->pArray[k] )
-        {
-            pSupp->pArray[c] = pSupp0->pArray[i++];
-            continue;
-        }
-        if ( pSupp0->pArray[i] > pSupp1->pArray[k] )
-        {
-            pSupp->pArray[c] = pSupp1->pArray[k++];
-            continue;
-        }
-        pSupp->pArray[c] = pSupp0->pArray[i++]; 
-        k++;
-    }
-    if ( i < pSupp0->nSize || k < pSupp1->nSize )
-        return 0;
-    pSupp->nSize = c;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates integer vector with the support of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapReadSupp( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, Vec_Int_t * vLeaves )
-{
-    Ivy_Supp_t * pSupp;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    vLeaves->nCap   = 8;
-    vLeaves->nSize  = pSupp->nSize;
-    vLeaves->pArray = pSupp->pArray;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the required times of the intermediate nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapRequired_rec( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, Ivy_Obj_t * pRoot, int DelayR )
-{
-    Ivy_Supp_t * pSupp;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    if ( pObj != pRoot && (pSupp->nRefs > 0 || Ivy_ObjIsCi(pObj)) )
-        return;
-    Ivy_FastMapRequired_rec( pAig, Ivy_ObjFanin0(pObj), pRoot, DelayR );
-    Ivy_FastMapRequired_rec( pAig, Ivy_ObjFanin1(pObj), pRoot, DelayR );
-//    assert( pObj == pRoot || pSupp->DelayR == IVY_INFINITY );
-    pSupp->DelayR = DelayR;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the required times for each node.]
-
-  Description [Sets reference counters for each node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapRequired( Ivy_Man_t * pAig, int Delay, int fSetInter )
-{
-    Vec_Vec_t * vLuts;
-    Vec_Ptr_t * vNodes;
-    Ivy_Obj_t * pObj;
-    Ivy_Supp_t * pSupp, * pSuppF;
-    int i, k, c;
-    // clean the required times
-    Ivy_ManForEachPi( pAig, pObj, i )
-    {
-        pSupp = Ivy_ObjSupp( pAig, pObj );
-        pSupp->DelayR = IVY_INFINITY;
-        pSupp->nRefs = 0;
-    }
-    Ivy_ManForEachNode( pAig, pObj, i )
-    {
-        pSupp = Ivy_ObjSupp( pAig, pObj );
-        pSupp->DelayR = IVY_INFINITY;
-        pSupp->nRefs = 0;
-    }
-    // set the required times of the POs
-    Ivy_ManForEachPo( pAig, pObj, i )
-    {
-        pSupp = Ivy_ObjSupp( pAig, Ivy_ObjFanin0(pObj) );
-        pSupp->DelayR = Delay;
-        pSupp->nRefs++;
-    }
-    // get the levelized nodes used in the mapping
-    vLuts = ((Ivy_SuppMan_t *)pAig->pData)->vLuts;
-    // propagate the required times
-    Vec_VecForEachLevelReverse( vLuts, vNodes, i )
-    Vec_PtrForEachEntry( vNodes, pObj, k )
-    {
-        pSupp = Ivy_ObjSupp( pAig, pObj );
-        assert( pSupp->nRefs > 0 );
-        for ( c = 0; c < pSupp->nSize; c++ )
-        {
-            pSuppF = Ivy_ObjSupp( pAig, Ivy_ManObj(pAig, pSupp->pArray[c]) );
-            pSuppF->DelayR = IVY_MIN( pSuppF->DelayR, pSupp->DelayR - 1 );
-            pSuppF->nRefs++;
-        }
-    }
-/*
-    // print out some of the required times
-    Ivy_ManForEachPi( pAig, pObj, i )
-    {
-        pSupp = Ivy_ObjSupp( pAig, pObj );
-        printf( "%d ", pSupp->DelayR );
-    }
-    printf( "\n" );    
-*/
-
-    if ( fSetInter )
-    {
-        // set the required times of the intermediate nodes
-        Vec_VecForEachLevelReverse( vLuts, vNodes, i )
-        Vec_PtrForEachEntry( vNodes, pObj, k )
-        {
-            pSupp = Ivy_ObjSupp( pAig, pObj );
-            Ivy_FastMapRequired_rec( pAig, pObj, pObj, pSupp->DelayR ); 
-        }
-        // make sure that all required times are assigned
-        Ivy_ManForEachNode( pAig, pObj, i )
-        {
-            pSupp = Ivy_ObjSupp( pAig, pObj );
-            assert( pSupp->DelayR < IVY_INFINITY );
-        }
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs area recovery for each node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapRecover( Ivy_Man_t * pAig, int nLimit )
-{
-    Vec_Ptr_t * vFront, * vFrontOld;
-    Ivy_Obj_t * pObj;
-    int i;
-    vFront = Vec_PtrAlloc( nLimit );
-    vFrontOld = Vec_PtrAlloc( nLimit );
-    Ivy_ManCleanTravId( pAig );
-    // iterate through all nodes in the topological order
-    Ivy_ManForEachNode( pAig, pObj, i )
-        Ivy_FastMapNodeRecover( pAig, pObj, nLimit, vFront, vFrontOld );
-    Vec_PtrFree( vFrontOld );
-    Vec_PtrFree( vFront );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the delay of the cut rooted at this node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeDelay( Ivy_Man_t * pAig, Ivy_Obj_t * pObj )
-{
-    Ivy_Supp_t * pSupp, * pSuppF;
-    int c, Delay = 0;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    for ( c = 0; c < pSupp->nSize; c++ )
-    {
-        pSuppF = Ivy_ObjSupp( pAig, Ivy_ManObj(pAig, pSupp->pArray[c]) );
-        Delay = IVY_MAX( Delay, pSuppF->Delay );
-    }
-    return 1 + Delay;
-}
-
-
-/**function*************************************************************
-
-  synopsis    [References the cut.]
-
-  description [This procedure is similar to the procedure NodeReclaim.]
-               
-  sideeffects []
-
-  seealso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeRef( Ivy_Man_t * pAig, Ivy_Obj_t * pObj )
-{
-    Ivy_Supp_t * pSupp, * pSuppF;
-    Ivy_Obj_t * pNodeChild;
-    int aArea, i;
-    // start the area of this cut
-    aArea = 1;
-    // go through the children
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    assert( pSupp->nSize > 1 );
-    for ( i = 0; i < pSupp->nSize; i++ )
-    {
-        pNodeChild = Ivy_ManObj(pAig, pSupp->pArray[i]);
-        pSuppF = Ivy_ObjSupp( pAig, pNodeChild );
-        assert( pSuppF->nRefs >= 0 );
-        if ( pSuppF->nRefs++ > 0 )  
-            continue;
-        if ( pSuppF->nSize == 1 ) 
-            continue;
-        aArea += Ivy_FastMapNodeRef( pAig, pNodeChild );
-    }
-    return aArea;
-}
-
-/**function*************************************************************
-
-  synopsis    [Dereferences the cut.]
-
-  description [This procedure is similar to the procedure NodeRecusiveDeref.]
-               
-  sideeffects []
-
-  seealso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeDeref( Ivy_Man_t * pAig, Ivy_Obj_t * pObj )
-{
-    Ivy_Supp_t * pSupp, * pSuppF;
-    Ivy_Obj_t * pNodeChild;
-    int aArea, i;
-    // start the area of this cut
-    aArea = 1;
-    // go through the children
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    assert( pSupp->nSize > 1 );
-    for ( i = 0; i < pSupp->nSize; i++ )
-    {
-        pNodeChild = Ivy_ManObj(pAig, pSupp->pArray[i]);
-        pSuppF = Ivy_ObjSupp( pAig, pNodeChild );
-        assert( pSuppF->nRefs > 0 );
-        if ( --pSuppF->nRefs > 0 )  
-            continue;
-        if ( pSuppF->nSize == 1 ) 
-            continue;
-        aArea += Ivy_FastMapNodeDeref( pAig, pNodeChild );
-    }
-    return aArea;
-}
-
-/**function*************************************************************
-
-  synopsis    [Computes the exact area associated with the cut.]
-
-  description []
-               
-  sideeffects []
-
-  seealso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeAreaRefed( Ivy_Man_t * pAig, Ivy_Obj_t * pObj )
-{
-    Ivy_Supp_t * pSupp;
-    int aResult, aResult2;
-    if ( Ivy_ObjIsCi(pObj) )
-        return 0;
-    assert( Ivy_ObjIsNode(pObj) );
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    assert( pSupp->nRefs > 0 );
-    aResult  = Ivy_FastMapNodeDeref( pAig, pObj );
-    aResult2 = Ivy_FastMapNodeRef( pAig, pObj );
-    assert( aResult == aResult2 );
-    return aResult;
-}
-
-/**function*************************************************************
-
-  synopsis    [Computes the exact area associated with the cut.]
-
-  description []
-               
-  sideeffects []
-
-  seealso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeAreaDerefed( Ivy_Man_t * pAig, Ivy_Obj_t * pObj )
-{
-    Ivy_Supp_t * pSupp;
-    int aResult, aResult2;
-    if ( Ivy_ObjIsCi(pObj) )
-        return 0;
-    assert( Ivy_ObjIsNode(pObj) );
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    assert( pSupp->nRefs == 0 );
-    aResult2 = Ivy_FastMapNodeRef( pAig, pObj );
-    aResult  = Ivy_FastMapNodeDeref( pAig, pObj );
-    assert( aResult == aResult2 );
-    return aResult;
-}
-
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of nodes with no external fanout.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapCutCost( Ivy_Man_t * pAig, Vec_Ptr_t * vFront )
-{
-    Ivy_Supp_t * pSuppF;
-    Ivy_Obj_t * pFanin;
-    int i, Counter = 0;
-    Vec_PtrForEachEntry( vFront, pFanin, i )
-    {
-        pSuppF = Ivy_ObjSupp( pAig, pFanin );
-        if ( pSuppF->nRefs == 0 )
-            Counter++;
-    }
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs area recovery for each node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapMark_rec( Ivy_Man_t * pAig, Ivy_Obj_t * pObj )
-{
-    if ( Ivy_ObjIsTravIdCurrent(pAig, pObj) )
-        return;
-    assert( Ivy_ObjIsNode(pObj) );
-    Ivy_FastMapMark_rec( pAig, Ivy_ObjFanin0(pObj) );
-    Ivy_FastMapMark_rec( pAig, Ivy_ObjFanin1(pObj) );
-    Ivy_ObjSetTravIdCurrent(pAig, pObj);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the number of fanins will grow.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeWillGrow( Ivy_Man_t * pAig, Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pFanin0, * pFanin1;
-    assert( Ivy_ObjIsNode(pObj) );
-    pFanin0 = Ivy_ObjFanin0(pObj);
-    pFanin1 = Ivy_ObjFanin1(pObj);
-    return !Ivy_ObjIsTravIdCurrent(pAig, pFanin0) && !Ivy_ObjIsTravIdCurrent(pAig, pFanin1);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the increase in the number of fanins with no external refs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeFaninCost( Ivy_Man_t * pAig, Ivy_Obj_t * pObj )
-{
-    Ivy_Supp_t * pSuppF;
-    Ivy_Obj_t * pFanin;
-    int Counter = 0;
-    assert( Ivy_ObjIsNode(pObj) );
-    // check if the node has external refs
-    pSuppF = Ivy_ObjSupp( pAig, pObj );
-    if ( pSuppF->nRefs == 0 )
-        Counter--;
-    // increment the number of fanins without external refs
-    pFanin = Ivy_ObjFanin0(pObj);
-    pSuppF = Ivy_ObjSupp( pAig, pFanin );
-    if ( !Ivy_ObjIsTravIdCurrent(pAig, pFanin) && pSuppF->nRefs == 0 )
-        Counter++;
-    // increment the number of fanins without external refs
-    pFanin = Ivy_ObjFanin1(pObj);
-    pSuppF = Ivy_ObjSupp( pAig, pFanin );
-    if ( !Ivy_ObjIsTravIdCurrent(pAig, pFanin) && pSuppF->nRefs == 0 )
-        Counter++;
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the frontier.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNodeFaninUpdate( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, Vec_Ptr_t * vFront )
-{
-    Ivy_Obj_t * pFanin;
-    assert( Ivy_ObjIsNode(pObj) );
-    Vec_PtrRemove( vFront, pObj );
-    pFanin = Ivy_ObjFanin0(pObj);
-    if ( !Ivy_ObjIsTravIdCurrent(pAig, pFanin) )
-    {
-        Ivy_ObjSetTravIdCurrent(pAig, pFanin);
-        Vec_PtrPush( vFront, pFanin );
-    }
-    pFanin = Ivy_ObjFanin1(pObj);
-    if ( !Ivy_ObjIsTravIdCurrent(pAig, pFanin) )
-    {
-        Ivy_ObjSetTravIdCurrent(pAig, pFanin);
-        Vec_PtrPush( vFront, pFanin );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compacts the number of external refs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeFaninCompact0( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront )
-{
-    Ivy_Obj_t * pFanin;
-    int i;
-    Vec_PtrForEachEntry( vFront, pFanin, i )
-    {
-        if ( Ivy_ObjIsCi(pFanin) )
-            continue;
-        if ( Ivy_FastMapNodeWillGrow(pAig, pFanin) )
-            continue;
-        if ( Ivy_FastMapNodeFaninCost(pAig, pFanin) <= 0 )
-        {
-            Ivy_FastMapNodeFaninUpdate( pAig, pFanin, vFront );
-            return 1;
-        }
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compacts the number of external refs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeFaninCompact1( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront )
-{
-    Ivy_Obj_t * pFanin;
-    int i;
-    Vec_PtrForEachEntry( vFront, pFanin, i )
-    {
-        if ( Ivy_ObjIsCi(pFanin) )
-            continue;
-        if ( Ivy_FastMapNodeFaninCost(pAig, pFanin) < 0 )
-        {
-            Ivy_FastMapNodeFaninUpdate( pAig, pFanin, vFront );
-            return 1;
-        }
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compacts the number of external refs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeFaninCompact2( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront )
-{
-    Ivy_Obj_t * pFanin;
-    int i;
-    Vec_PtrForEachEntry( vFront, pFanin, i )
-    {
-        if ( Ivy_ObjIsCi(pFanin) )
-            continue;
-        if ( Ivy_FastMapNodeFaninCost(pAig, pFanin) <= 0 )
-        {
-            Ivy_FastMapNodeFaninUpdate( pAig, pFanin, vFront );
-            return 1;
-        }
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compacts the number of external refs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FastMapNodeFaninCompact_int( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront )
-{
-    if ( Ivy_FastMapNodeFaninCompact0(pAig, pObj, nLimit, vFront) )
-        return 1;
-    if (  Vec_PtrSize(vFront) < nLimit && Ivy_FastMapNodeFaninCompact1(pAig, pObj, nLimit, vFront) )
-        return 1;
-    if ( Vec_PtrSize(vFront) < nLimit && Ivy_FastMapNodeFaninCompact2(pAig, pObj, nLimit, vFront) )
-        return 1;
-    assert( Vec_PtrSize(vFront) <= nLimit );
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compacts the number of external refs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNodeFaninCompact( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront )
-{
-    while ( Ivy_FastMapNodeFaninCompact_int( pAig, pObj, nLimit, vFront ) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prepares node mapping.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNodePrepare( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront, Vec_Ptr_t * vFrontOld )
-{
-    Ivy_Supp_t * pSupp;
-    Ivy_Obj_t * pFanin;
-    int i;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    // expand the cut downwards from the given place
-    Vec_PtrClear( vFront );
-    Vec_PtrClear( vFrontOld );
-    Ivy_ManIncrementTravId( pAig );
-    for ( i = 0; i < pSupp->nSize; i++ )
-    {
-        pFanin = Ivy_ManObj(pAig, pSupp->pArray[i]);
-        Vec_PtrPush( vFront, pFanin );
-        Vec_PtrPush( vFrontOld, pFanin );
-        Ivy_ObjSetTravIdCurrent( pAig, pFanin );
-    }
-    // mark the nodes in the cone
-    Ivy_FastMapMark_rec( pAig, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the frontier.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNodeUpdate( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, Vec_Ptr_t * vFront )
-{
-    Ivy_Supp_t * pSupp;
-    Ivy_Obj_t * pFanin;
-    int i;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    // deref node's cut
-    Ivy_FastMapNodeDeref( pAig, pObj );
-    // update the node's cut
-    pSupp->nSize = Vec_PtrSize(vFront);
-    Vec_PtrForEachEntry( vFront, pFanin, i )
-        pSupp->pArray[i] = pFanin->Id;
-    // ref the new cut
-    Ivy_FastMapNodeRef( pAig, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs area recovery for each node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNodeRecover2( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront, Vec_Ptr_t * vFrontOld )
-{
-    Ivy_Supp_t * pSupp;
-    int CostBef, CostAft;
-    int AreaBef, AreaAft;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-//    if ( pSupp->nRefs == 0 )
-//        return;
-    if ( pSupp->nRefs == 0 )
-        AreaBef = Ivy_FastMapNodeAreaDerefed( pAig, pObj );
-    else
-        AreaBef = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-    // get the area
-    if ( AreaBef == 1 )
-        return;
-
-    if ( pSupp->nRefs == 0 )
-    {
-        pSupp->nRefs = 1000000;
-        Ivy_FastMapNodeRef( pAig, pObj );
-    }
-    // the cut is non-trivial
-    Ivy_FastMapNodePrepare( pAig, pObj, nLimit, vFront, vFrontOld );
-    // iteratively modify the cut
-    CostBef = Ivy_FastMapCutCost( pAig, vFront );
-    Ivy_FastMapNodeFaninCompact( pAig, pObj, nLimit, vFront );
-    CostAft = Ivy_FastMapCutCost( pAig, vFront );
-    assert( CostBef >= CostAft );
-    // update the node
-    Ivy_FastMapNodeUpdate( pAig, pObj, vFront );
-    // get the new area
-    AreaAft = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-    if ( AreaAft > AreaBef )
-    {
-        Ivy_FastMapNodeUpdate( pAig, pObj, vFrontOld );
-        AreaAft = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-        assert( AreaAft == AreaBef );
-    }
-    if ( pSupp->nRefs == 1000000 )
-    {
-        pSupp->nRefs = 0;
-        Ivy_FastMapNodeDeref( pAig, pObj );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs area recovery for each node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNodeRecover( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront, Vec_Ptr_t * vFrontOld )
-{
-    Ivy_Supp_t * pSupp;
-    int CostBef, CostAft;
-    int AreaBef, AreaAft;
-    int DelayOld;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    DelayOld = pSupp->Delay = Ivy_FastMapNodeDelay( pAig, pObj );
-    assert( pSupp->Delay <= pSupp->DelayR );
-    if ( pSupp->nRefs == 0 )
-        return;
-    // get the area
-    AreaBef = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-//    if ( AreaBef == 1 )
-//        return;
-    if ( pObj->Id == 102 )
-    {
-        int x = 0;
-    }
-    // the cut is non-trivial
-    Ivy_FastMapNodePrepare( pAig, pObj, nLimit, vFront, vFrontOld );
-    // iteratively modify the cut
-    Ivy_FastMapNodeDeref( pAig, pObj );
-    CostBef = Ivy_FastMapCutCost( pAig, vFront );
-    Ivy_FastMapNodeFaninCompact( pAig, pObj, nLimit, vFront );
-    CostAft = Ivy_FastMapCutCost( pAig, vFront );
-    Ivy_FastMapNodeRef( pAig, pObj );
-    assert( CostBef >= CostAft );
-    // update the node
-    Ivy_FastMapNodeUpdate( pAig, pObj, vFront );
-    pSupp->Delay = Ivy_FastMapNodeDelay( pAig, pObj );
-    // get the new area
-    AreaAft = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-    if ( AreaAft > AreaBef || pSupp->Delay > pSupp->DelayR )
-    {
-        Ivy_FastMapNodeUpdate( pAig, pObj, vFrontOld );
-        AreaAft = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-        assert( AreaAft == AreaBef );
-        pSupp->Delay = DelayOld;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs area recovery for each node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FastMapNodeRecover4( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, int nLimit, Vec_Ptr_t * vFront, Vec_Ptr_t * vFrontOld )
-{
-    Ivy_Supp_t * pSupp;
-    int CostBef, CostAft;
-    int AreaBef, AreaAft;
-    int DelayOld;
-    pSupp = Ivy_ObjSupp( pAig, pObj );
-    DelayOld = pSupp->Delay = Ivy_FastMapNodeDelay( pAig, pObj );
-    assert( pSupp->Delay <= pSupp->DelayR );
-//    if ( pSupp->nRefs == 0 )
-//        return;
-//    AreaBef = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-    // get the area
-    if ( pSupp->nRefs == 0 )
-        AreaBef = Ivy_FastMapNodeAreaDerefed( pAig, pObj );
-    else
-        AreaBef = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-    if ( AreaBef == 1 )
-        return;
-
-    if ( pSupp->nRefs == 0 )
-    {
-        pSupp->nRefs = 1000000;
-        Ivy_FastMapNodeRef( pAig, pObj );
-    }
-    // the cut is non-trivial
-    Ivy_FastMapNodePrepare( pAig, pObj, nLimit, vFront, vFrontOld );
-    // iteratively modify the cut
-    CostBef = Ivy_FastMapCutCost( pAig, vFront );
-    Ivy_FastMapNodeFaninCompact( pAig, pObj, nLimit, vFront );
-    CostAft = Ivy_FastMapCutCost( pAig, vFront );
-    assert( CostBef >= CostAft );
-    // update the node
-    Ivy_FastMapNodeUpdate( pAig, pObj, vFront );
-    pSupp->Delay = Ivy_FastMapNodeDelay( pAig, pObj );
-    // get the new area
-    AreaAft = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-    if ( AreaAft > AreaBef || pSupp->Delay > pSupp->DelayR )
-    {
-        Ivy_FastMapNodeUpdate( pAig, pObj, vFrontOld );
-        AreaAft = Ivy_FastMapNodeAreaRefed( pAig, pObj );
-        assert( AreaAft == AreaBef );
-        pSupp->Delay = DelayOld;
-    }
-    if ( pSupp->nRefs == 1000000 )
-    {
-        pSupp->nRefs = 0;
-        Ivy_FastMapNodeDeref( pAig, pObj );
-    }
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyFraig.c b/src/aig/ivy/ivyFraig.c
deleted file mode 100644
index 1ab91dd2..00000000
--- a/src/aig/ivy/ivyFraig.c
+++ /dev/null
@@ -1,2762 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyFraig.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Functional reduction of AIGs]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyFraig.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "satSolver.h"
-#include "extra.h"
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Ivy_FraigMan_t_        Ivy_FraigMan_t;
-typedef struct Ivy_FraigSim_t_        Ivy_FraigSim_t;
-typedef struct Ivy_FraigList_t_       Ivy_FraigList_t;
-
-struct Ivy_FraigList_t_
-{
-    Ivy_Obj_t *         pHead;
-    Ivy_Obj_t *         pTail;
-    int                 nItems;
-};
-
-struct Ivy_FraigSim_t_
-{
-    int                 Type;
-    Ivy_FraigSim_t *    pNext;
-    Ivy_FraigSim_t *    pFanin0;
-    Ivy_FraigSim_t *    pFanin1;
-    unsigned            pData[0];
-};
-
-struct Ivy_FraigMan_t_
-{
-    // general info 
-    Ivy_FraigParams_t * pParams;        // various parameters
-    // temporary backtrack limits because "sint64" cannot be defined in Ivy_FraigParams_t ...
-    sint64              nBTLimitGlobal; // global limit on the number of backtracks
-    sint64              nInsLimitGlobal;// global limit on the number of clause inspects
-    // AIG manager
-    Ivy_Man_t *         pManAig;        // the starting AIG manager
-    Ivy_Man_t *         pManFraig;      // the final AIG manager
-    // simulation information
-    int                 nSimWords;      // the number of words
-    char *              pSimWords;      // the simulation info
-    Ivy_FraigSim_t *    pSimStart;      // the list of simulation info for internal nodes
-    // counter example storage
-    int                 nPatWords;      // the number of words in the counter example
-    unsigned *          pPatWords;      // the counter example
-    int *               pPatScores;     // the scores of each pattern
-    // equivalence classes 
-    Ivy_FraigList_t     lClasses;       // equivalence classes
-    Ivy_FraigList_t     lCand;          // candidatates
-    int                 nPairs;         // the number of pairs of nodes
-    // equivalence checking
-    sat_solver *        pSat;           // SAT solver
-    int                 nSatVars;       // the number of variables currently used
-    Vec_Ptr_t *         vPiVars;        // the PIs of the cone used 
-    // other 
-    ProgressBar *       pProgress;
-    // statistics
-    int                 nSimRounds;
-    int                 nNodesMiter;
-    int                 nClassesZero;
-    int                 nClassesBeg;
-    int                 nClassesEnd;
-    int                 nPairsBeg;
-    int                 nPairsEnd;
-    int                 nSatCalls;
-    int                 nSatCallsSat;
-    int                 nSatCallsUnsat;
-    int                 nSatProof;
-    int                 nSatFails;
-    int                 nSatFailsReal;
-    // runtime
-    int                 timeSim;
-    int                 timeTrav;
-    int                 timeSat;
-    int                 timeSatUnsat;
-    int                 timeSatSat;
-    int                 timeSatFail;
-    int                 timeRef;
-    int                 timeTotal;
-    int                 time1;
-    int                 time2;
-};
-
-typedef struct Prove_ParamsStruct_t_      Prove_Params_t;
-struct Prove_ParamsStruct_t_
-{
-    // general parameters
-    int     fUseFraiging;          // enables fraiging
-    int     fUseRewriting;         // enables rewriting
-    int     fUseBdds;              // enables BDD construction when other methods fail
-    int     fVerbose;              // prints verbose stats
-    // iterations
-    int     nItersMax;             // the number of iterations
-    // mitering 
-    int     nMiteringLimitStart;   // starting mitering limit
-    float   nMiteringLimitMulti;   // multiplicative coefficient to increase the limit in each iteration
-    // rewriting 
-    int     nRewritingLimitStart;  // the number of rewriting iterations
-    float   nRewritingLimitMulti;  // multiplicative coefficient to increase the limit in each iteration
-    // fraiging 
-    int     nFraigingLimitStart;   // starting backtrack(conflict) limit
-    float   nFraigingLimitMulti;   // multiplicative coefficient to increase the limit in each iteration
-    // last-gasp BDD construction
-    int     nBddSizeLimit;         // the number of BDD nodes when construction is aborted
-    int     fBddReorder;           // enables dynamic BDD variable reordering
-    // last-gasp mitering
-    int     nMiteringLimitLast;    // final mitering limit
-    // global SAT solver limits
-    sint64  nTotalBacktrackLimit;  // global limit on the number of backtracks
-    sint64  nTotalInspectLimit;    // global limit on the number of clause inspects
-    // global resources applied
-    sint64  nTotalBacktracksMade;  // the total number of backtracks made
-    sint64  nTotalInspectsMade;    // the total number of inspects made
-};
-
-static inline Ivy_FraigSim_t * Ivy_ObjSim( Ivy_Obj_t * pObj )                            { return (Ivy_FraigSim_t *)pObj->pFanout;  }
-static inline Ivy_Obj_t * Ivy_ObjClassNodeLast( Ivy_Obj_t * pObj )                       { return pObj->pNextFan0;  }
-static inline Ivy_Obj_t * Ivy_ObjClassNodeRepr( Ivy_Obj_t * pObj )                       { return pObj->pNextFan0;  }
-static inline Ivy_Obj_t * Ivy_ObjClassNodeNext( Ivy_Obj_t * pObj )                       { return pObj->pNextFan1;  }
-static inline Ivy_Obj_t * Ivy_ObjNodeHashNext( Ivy_Obj_t * pObj )                        { return pObj->pPrevFan0;  }
-static inline Ivy_Obj_t * Ivy_ObjEquivListNext( Ivy_Obj_t * pObj )                       { return pObj->pPrevFan0;  }
-static inline Ivy_Obj_t * Ivy_ObjEquivListPrev( Ivy_Obj_t * pObj )                       { return pObj->pPrevFan1;  }
-static inline Ivy_Obj_t * Ivy_ObjFraig( Ivy_Obj_t * pObj )                               { return pObj->pEquiv;     }
-static inline int         Ivy_ObjSatNum( Ivy_Obj_t * pObj )                              { return (int)pObj->pNextFan0;         }
-static inline Vec_Ptr_t * Ivy_ObjFaninVec( Ivy_Obj_t * pObj )                            { return (Vec_Ptr_t *)pObj->pNextFan1; }
-
-static inline void        Ivy_ObjSetSim( Ivy_Obj_t * pObj, Ivy_FraigSim_t * pSim )       { pObj->pFanout = (Ivy_Obj_t *)pSim; }
-static inline void        Ivy_ObjSetClassNodeLast( Ivy_Obj_t * pObj, Ivy_Obj_t * pLast ) { pObj->pNextFan0 = pLast; }
-static inline void        Ivy_ObjSetClassNodeRepr( Ivy_Obj_t * pObj, Ivy_Obj_t * pRepr ) { pObj->pNextFan0 = pRepr; }
-static inline void        Ivy_ObjSetClassNodeNext( Ivy_Obj_t * pObj, Ivy_Obj_t * pNext ) { pObj->pNextFan1 = pNext; }
-static inline void        Ivy_ObjSetNodeHashNext( Ivy_Obj_t * pObj, Ivy_Obj_t * pNext )  { pObj->pPrevFan0 = pNext; }
-static inline void        Ivy_ObjSetEquivListNext( Ivy_Obj_t * pObj, Ivy_Obj_t * pNext ) { pObj->pPrevFan0 = pNext; }
-static inline void        Ivy_ObjSetEquivListPrev( Ivy_Obj_t * pObj, Ivy_Obj_t * pPrev ) { pObj->pPrevFan1 = pPrev; }
-static inline void        Ivy_ObjSetFraig( Ivy_Obj_t * pObj, Ivy_Obj_t * pNode )         { pObj->pEquiv    = pNode; }
-static inline void        Ivy_ObjSetSatNum( Ivy_Obj_t * pObj, int Num )                  { pObj->pNextFan0 = (Ivy_Obj_t *)Num;     }
-static inline void        Ivy_ObjSetFaninVec( Ivy_Obj_t * pObj, Vec_Ptr_t * vFanins )    { pObj->pNextFan1 = (Ivy_Obj_t *)vFanins; }
-
-static inline unsigned    Ivy_ObjRandomSim()                       { return (rand() << 24) ^ (rand() << 12) ^ rand(); }
-
-// iterate through equivalence classes
-#define Ivy_FraigForEachEquivClass( pList, pEnt )                 \
-    for ( pEnt = pList;                                           \
-          pEnt;                                                   \
-          pEnt = Ivy_ObjEquivListNext(pEnt) )
-#define Ivy_FraigForEachEquivClassSafe( pList, pEnt, pEnt2 )      \
-    for ( pEnt = pList,                                           \
-          pEnt2 = pEnt? Ivy_ObjEquivListNext(pEnt): NULL;         \
-          pEnt;                                                   \
-          pEnt = pEnt2,                                           \
-          pEnt2 = pEnt? Ivy_ObjEquivListNext(pEnt): NULL )
-// iterate through nodes in one class
-#define Ivy_FraigForEachClassNode( pClass, pEnt )                 \
-    for ( pEnt = pClass;                                          \
-          pEnt;                                                   \
-          pEnt = Ivy_ObjClassNodeNext(pEnt) )
-// iterate through nodes in the hash table
-#define Ivy_FraigForEachBinNode( pBin, pEnt )                     \
-    for ( pEnt = pBin;                                            \
-          pEnt;                                                   \
-          pEnt = Ivy_ObjNodeHashNext(pEnt) )
-
-static Ivy_FraigMan_t * Ivy_FraigStart( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams );
-static Ivy_FraigMan_t * Ivy_FraigStartSimple( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams );
-static Ivy_Man_t *   Ivy_FraigPerform_int( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams, sint64 nBTLimitGlobal, sint64 nInsLimitGlobal, sint64 * pnSatConfs, sint64 * pnSatInspects );
-static void          Ivy_FraigPrint( Ivy_FraigMan_t * p );
-static void          Ivy_FraigStop( Ivy_FraigMan_t * p );
-static void          Ivy_FraigSimulate( Ivy_FraigMan_t * p );
-static void          Ivy_FraigSweep( Ivy_FraigMan_t * p );
-static Ivy_Obj_t *   Ivy_FraigAnd( Ivy_FraigMan_t * p, Ivy_Obj_t * pObjOld );
-static int           Ivy_FraigNodesAreEquiv( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj0, Ivy_Obj_t * pObj1 );
-static int           Ivy_FraigNodeIsConst( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj );
-static void          Ivy_FraigNodeAddToSolver( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj0, Ivy_Obj_t * pObj1 );
-static int           Ivy_FraigSetActivityFactors( Ivy_FraigMan_t * p, Ivy_Obj_t * pOld, Ivy_Obj_t * pNew );
-static void          Ivy_FraigAddToPatScores( Ivy_FraigMan_t * p, Ivy_Obj_t * pClass, Ivy_Obj_t * pClassNew );
-static int           Ivy_FraigMiterStatus( Ivy_Man_t * pMan );
-static void          Ivy_FraigMiterProve( Ivy_FraigMan_t * p );
-static void          Ivy_FraigMiterPrint( Ivy_Man_t * pNtk, char * pString, int clk, int fVerbose );
-static int *         Ivy_FraigCreateModel( Ivy_FraigMan_t * p );
-
-static int Ivy_FraigNodesAreEquivBdd( Ivy_Obj_t * pObj1, Ivy_Obj_t * pObj2 );
-
-static sint64 s_nBTLimitGlobal = 0;
-static sint64 s_nInsLimitGlobal = 0;
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the default solving parameters.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigParamsDefault( Ivy_FraigParams_t * pParams )
-{
-    memset( pParams, 0, sizeof(Ivy_FraigParams_t) );
-    pParams->nSimWords        =      32;  // the number of words in the simulation info
-    pParams->dSimSatur        =   0.005;  // the ratio of refined classes when saturation is reached
-    pParams->fPatScores       =       0;  // enables simulation pattern scoring
-    pParams->MaxScore         =      25;  // max score after which resimulation is used
-    pParams->fDoSparse        =       1;  // skips sparse functions
-//    pParams->dActConeRatio    =    0.05;  // the ratio of cone to be bumped
-//    pParams->dActConeBumpMax  =     5.0;  // the largest bump of activity
-    pParams->dActConeRatio    =     0.3;  // the ratio of cone to be bumped
-    pParams->dActConeBumpMax  =    10.0;  // the largest bump of activity
-
-    pParams->nBTLimitNode     =     100;  // conflict limit at a node
-    pParams->nBTLimitMiter    =  500000;  // conflict limit at an output
-//    pParams->nBTLimitGlobal   =       0;  // conflict limit global
-//    pParams->nInsLimitGlobal  =       0;  // inspection limit global
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs combinational equivalence checking for the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigProve( Ivy_Man_t ** ppManAig, void * pPars )
-{
-    Prove_Params_t * pParams = pPars;
-    Ivy_FraigParams_t Params, * pIvyParams = &Params; 
-    Ivy_Man_t * pManAig, * pManTemp;
-    int RetValue, nIter, clk, timeStart = clock();//, Counter;
-    sint64 nSatConfs, nSatInspects;
-
-    // start the network and parameters
-    pManAig = *ppManAig;
-    Ivy_FraigParamsDefault( pIvyParams );
-    pIvyParams->fVerbose = pParams->fVerbose;
-    pIvyParams->fProve = 1;
-
-    if ( pParams->fVerbose )
-    {
-        printf( "RESOURCE LIMITS: Iterations = %d. Rewriting = %s. Fraiging = %s.\n",
-            pParams->nItersMax, pParams->fUseRewriting? "yes":"no", pParams->fUseFraiging? "yes":"no" );
-        printf( "Mitering = %d (%3.1f).  Rewriting = %d (%3.1f).  Fraiging = %d (%3.1f).\n", 
-            pParams->nMiteringLimitStart,  pParams->nMiteringLimitMulti, 
-            pParams->nRewritingLimitStart, pParams->nRewritingLimitMulti,
-            pParams->nFraigingLimitStart,  pParams->nFraigingLimitMulti );
-        printf( "Mitering last = %d.\n", 
-            pParams->nMiteringLimitLast );
-    }
-
-    // if SAT only, solve without iteration
-    if ( !pParams->fUseRewriting && !pParams->fUseFraiging )
-    {
-        clk = clock();
-        pIvyParams->nBTLimitMiter = pParams->nMiteringLimitLast / Ivy_ManPoNum(pManAig);
-        pManAig = Ivy_FraigMiter( pManTemp = pManAig, pIvyParams );  Ivy_ManStop( pManTemp );
-        RetValue = Ivy_FraigMiterStatus( pManAig );
-        Ivy_FraigMiterPrint( pManAig, "SAT solving", clk, pParams->fVerbose );
-        *ppManAig = pManAig;
-        return RetValue;
-    }
-
-    if ( Ivy_ManNodeNum(pManAig) < 500 )
-    {
-        // run the first mitering
-        clk = clock();
-        pIvyParams->nBTLimitMiter = pParams->nMiteringLimitStart / Ivy_ManPoNum(pManAig);
-        pManAig = Ivy_FraigMiter( pManTemp = pManAig, pIvyParams );  Ivy_ManStop( pManTemp );
-        RetValue = Ivy_FraigMiterStatus( pManAig );
-        Ivy_FraigMiterPrint( pManAig, "SAT solving", clk, pParams->fVerbose );
-        if ( RetValue >= 0 )
-        {
-            *ppManAig = pManAig;
-            return RetValue;
-        }
-    }
-
-    // check the current resource limits
-    RetValue = -1;
-    for ( nIter = 0; nIter < pParams->nItersMax; nIter++ )
-    {
-        if ( pParams->fVerbose )
-        {
-            printf( "ITERATION %2d : Confs = %6d. FraigBTL = %3d. \n", nIter+1, 
-                 (int)(pParams->nMiteringLimitStart * pow(pParams->nMiteringLimitMulti,nIter)), 
-                 (int)(pParams->nFraigingLimitStart * pow(pParams->nFraigingLimitMulti,nIter)) );
-            fflush( stdout );
-        }
-
-        // try rewriting
-        if ( pParams->fUseRewriting )
-        { // bug in Ivy_NodeFindCutsAll() when leaves are identical!
-/*
-            clk = clock();
-            Counter = (int)(pParams->nRewritingLimitStart * pow(pParams->nRewritingLimitMulti,nIter));
-            pManAig = Ivy_ManRwsat( pManAig, 0 );  
-            RetValue = Ivy_FraigMiterStatus( pManAig );
-            Ivy_FraigMiterPrint( pManAig, "Rewriting  ", clk, pParams->fVerbose );
-*/
-        }
-        if ( RetValue >= 0 )
-            break;
-
-        // try fraiging followed by mitering
-        if ( pParams->fUseFraiging )
-        {
-            clk = clock();
-            pIvyParams->nBTLimitNode  = (int)(pParams->nFraigingLimitStart * pow(pParams->nFraigingLimitMulti,nIter));
-            pIvyParams->nBTLimitMiter = (int)(pParams->nMiteringLimitStart * pow(pParams->nMiteringLimitMulti,nIter)) / Ivy_ManPoNum(pManAig);
-            pManAig = Ivy_FraigPerform_int( pManTemp = pManAig, pIvyParams, pParams->nTotalBacktrackLimit, pParams->nTotalInspectLimit, &nSatConfs, &nSatInspects );  Ivy_ManStop( pManTemp );
-            RetValue = Ivy_FraigMiterStatus( pManAig );
-            Ivy_FraigMiterPrint( pManAig, "Fraiging   ", clk, pParams->fVerbose );
-        }
-        if ( RetValue >= 0 )
-            break;
-
-        // add to the number of backtracks and inspects
-        pParams->nTotalBacktracksMade += nSatConfs;
-        pParams->nTotalInspectsMade   += nSatInspects;
-        // check if global resource limit is reached
-        if ( (pParams->nTotalBacktrackLimit && pParams->nTotalBacktracksMade >= pParams->nTotalBacktrackLimit) ||
-             (pParams->nTotalInspectLimit   && pParams->nTotalInspectsMade   >= pParams->nTotalInspectLimit) )
-        {
-            printf( "Reached global limit on conflicts/inspects. Quitting.\n" );
-            *ppManAig = pManAig;
-            return -1;
-        }
-    }    
-
-    if ( RetValue < 0 )
-    {
-        if ( pParams->fVerbose )
-        {
-            printf( "Attempting SAT with conflict limit %d ...\n", pParams->nMiteringLimitLast );
-            fflush( stdout );
-        }
-        clk = clock();
-        pIvyParams->nBTLimitMiter = pParams->nMiteringLimitLast / Ivy_ManPoNum(pManAig);
-        if ( pParams->nTotalBacktrackLimit )
-            s_nBTLimitGlobal  = pParams->nTotalBacktrackLimit - pParams->nTotalBacktracksMade;
-        if ( pParams->nTotalInspectLimit )
-            s_nInsLimitGlobal = pParams->nTotalInspectLimit -   pParams->nTotalInspectsMade;        
-        pManAig = Ivy_FraigMiter( pManTemp = pManAig, pIvyParams );  Ivy_ManStop( pManTemp );
-        s_nBTLimitGlobal  = 0;
-        s_nInsLimitGlobal = 0;        
-        RetValue = Ivy_FraigMiterStatus( pManAig );
-        Ivy_FraigMiterPrint( pManAig, "SAT solving", clk, pParams->fVerbose );
-        // make sure that the sover never returns "undecided" when infinite resource limits are set
-        if( RetValue == -1 && pParams->nTotalInspectLimit == 0 &&
-            pParams->nTotalBacktrackLimit == 0 )
-        {
-            extern void Prove_ParamsPrint( Prove_Params_t * pParams );
-            Prove_ParamsPrint( pParams );
-            printf("ERROR: ABC has returned \"undecided\" in spite of no limits...\n");
-            exit(1);
-        }
-    }
-
-    // assign the model if it was proved by rewriting (const 1 miter)
-    if ( RetValue == 0 && pManAig->pData == NULL )
-    {
-        pManAig->pData = ALLOC( int, Ivy_ManPiNum(pManAig) );
-        memset( pManAig->pData, 0, sizeof(int) * Ivy_ManPiNum(pManAig) );
-    }
-    *ppManAig = pManAig;
-    return RetValue;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fraiging of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_FraigPerform_int( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams, sint64 nBTLimitGlobal, sint64 nInsLimitGlobal, sint64 * pnSatConfs, sint64 * pnSatInspects )
-{ 
-    Ivy_FraigMan_t * p;
-    Ivy_Man_t * pManAigNew;
-    int clk;
-    if ( Ivy_ManNodeNum(pManAig) == 0 )
-        return Ivy_ManDup(pManAig);
-clk = clock();
-    assert( Ivy_ManLatchNum(pManAig) == 0 );
-    p = Ivy_FraigStart( pManAig, pParams );
-    // set global limits
-    p->nBTLimitGlobal  = nBTLimitGlobal;
-    p->nInsLimitGlobal = nInsLimitGlobal; 
-    
-    Ivy_FraigSimulate( p );
-    Ivy_FraigSweep( p );
-    pManAigNew = p->pManFraig;
-p->timeTotal = clock() - clk;
-    if ( pnSatConfs )
-        *pnSatConfs = p->pSat? p->pSat->stats.conflicts : 0;
-    if ( pnSatInspects )
-        *pnSatInspects = p->pSat? p->pSat->stats.inspects : 0;
-    Ivy_FraigStop( p );
-    return pManAigNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fraiging of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_FraigPerform( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams )
-{
-    Ivy_FraigMan_t * p;
-    Ivy_Man_t * pManAigNew;
-    int clk;
-    if ( Ivy_ManNodeNum(pManAig) == 0 )
-        return Ivy_ManDup(pManAig);
-clk = clock();
-    assert( Ivy_ManLatchNum(pManAig) == 0 );
-    p = Ivy_FraigStart( pManAig, pParams );
-    Ivy_FraigSimulate( p );
-    Ivy_FraigSweep( p );
-    pManAigNew = p->pManFraig;
-p->timeTotal = clock() - clk;
-    Ivy_FraigStop( p );
-    return pManAigNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Applies brute-force SAT to the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_FraigMiter( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams )
-{
-    Ivy_FraigMan_t * p;
-    Ivy_Man_t * pManAigNew;
-    Ivy_Obj_t * pObj;
-    int i, clk;
-clk = clock();
-    assert( Ivy_ManLatchNum(pManAig) == 0 );
-    p = Ivy_FraigStartSimple( pManAig, pParams );
-    // set global limits
-    p->nBTLimitGlobal  = s_nBTLimitGlobal;
-    p->nInsLimitGlobal = s_nInsLimitGlobal; 
-    // duplicate internal nodes
-    Ivy_ManForEachNode( p->pManAig, pObj, i )
-        pObj->pEquiv = Ivy_And( p->pManFraig, Ivy_ObjChild0Equiv(pObj), Ivy_ObjChild1Equiv(pObj) );
-    // try to prove each output of the miter
-    Ivy_FraigMiterProve( p );
-    // add the POs
-    Ivy_ManForEachPo( p->pManAig, pObj, i )
-        Ivy_ObjCreatePo( p->pManFraig, Ivy_ObjChild0Equiv(pObj) );
-    // clean the new manager
-    Ivy_ManForEachObj( p->pManFraig, pObj, i )
-    {
-        if ( Ivy_ObjFaninVec(pObj) )
-            Vec_PtrFree( Ivy_ObjFaninVec(pObj) );
-        pObj->pNextFan0 = pObj->pNextFan1 = NULL;
-    }
-    // remove dangling nodes 
-    Ivy_ManCleanup( p->pManFraig );
-    pManAigNew = p->pManFraig;
-p->timeTotal = clock() - clk;
-
-//printf( "Final nodes = %6d. ", Ivy_ManNodeNum(pManAigNew) );
-//PRT( "Time", p->timeTotal );
-    Ivy_FraigStop( p );
-    return pManAigNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the fraiging manager without simulation info.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_FraigMan_t * Ivy_FraigStartSimple( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams )
-{
-    Ivy_FraigMan_t * p;
-    // allocat the fraiging manager
-    p = ALLOC( Ivy_FraigMan_t, 1 );
-    memset( p, 0, sizeof(Ivy_FraigMan_t) );
-    p->pParams   = pParams;
-    p->pManAig   = pManAig;
-    p->pManFraig = Ivy_ManStartFrom( pManAig );
-    p->vPiVars   = Vec_PtrAlloc( 100 );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_FraigMan_t * Ivy_FraigStart( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams )
-{
-    Ivy_FraigMan_t * p;
-    Ivy_FraigSim_t * pSims;
-    Ivy_Obj_t * pObj;
-    int i, k, EntrySize;
-    // clean the fanout representation
-    Ivy_ManForEachObj( pManAig, pObj, i )
-//        pObj->pEquiv = pObj->pFanout = pObj->pNextFan0 = pObj->pNextFan1 = pObj->pPrevFan0 = pObj->pPrevFan1 = NULL;
-        assert( !pObj->pEquiv && !pObj->pFanout );
-    // allocat the fraiging manager
-    p = ALLOC( Ivy_FraigMan_t, 1 );
-    memset( p, 0, sizeof(Ivy_FraigMan_t) );
-    p->pParams   = pParams;
-    p->pManAig   = pManAig;
-    p->pManFraig = Ivy_ManStartFrom( pManAig );
-    // allocate simulation info
-    p->nSimWords    = pParams->nSimWords;
-//    p->pSimWords    = ALLOC( unsigned, Ivy_ManObjNum(pManAig) * p->nSimWords ); 
-    EntrySize    = sizeof(Ivy_FraigSim_t) + sizeof(unsigned) * p->nSimWords;
-    p->pSimWords = (char *)malloc( Ivy_ManObjNum(pManAig) * EntrySize ); 
-    memset( p->pSimWords, 0, EntrySize );
-    k = 0;
-    Ivy_ManForEachObj( pManAig, pObj, i )
-    {
-        pSims = (Ivy_FraigSim_t *)(p->pSimWords + EntrySize * k++);
-        pSims->pNext = NULL;
-        if ( Ivy_ObjIsNode(pObj) )
-        {
-            if ( p->pSimStart == NULL )
-                p->pSimStart = pSims;
-            else
-                ((Ivy_FraigSim_t *)(p->pSimWords + EntrySize * (k-2)))->pNext = pSims;
-            pSims->pFanin0 = Ivy_ObjSim( Ivy_ObjFanin0(pObj) );
-            pSims->pFanin1 = Ivy_ObjSim( Ivy_ObjFanin1(pObj) );
-            pSims->Type = (Ivy_ObjFaninPhase(Ivy_ObjChild0(pObj)) << 2) | (Ivy_ObjFaninPhase(Ivy_ObjChild1(pObj)) << 1) | pObj->fPhase;
-        }
-        else
-        {
-            pSims->pFanin0 = NULL;
-            pSims->pFanin1 = NULL;
-            pSims->Type = 0;
-        }
-        Ivy_ObjSetSim( pObj, pSims );
-    }
-    assert( k == Ivy_ManObjNum(pManAig) );
-    // allocate storage for sim pattern
-    p->nPatWords = Ivy_BitWordNum( Ivy_ManPiNum(pManAig) );
-    p->pPatWords = ALLOC( unsigned, p->nPatWords ); 
-    p->pPatScores = ALLOC( int, 32 * p->nSimWords ); 
-    p->vPiVars   = Vec_PtrAlloc( 100 );
-    // set random number generator
-    srand( 0xABCABC );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigStop( Ivy_FraigMan_t * p )
-{
-    if ( p->pParams->fVerbose )
-        Ivy_FraigPrint( p );
-    if ( p->vPiVars ) Vec_PtrFree( p->vPiVars );
-    if ( p->pSat ) sat_solver_delete( p->pSat );
-    FREE( p->pPatScores );
-    FREE( p->pPatWords );
-    FREE( p->pSimWords );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints stats for the fraiging manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigPrint( Ivy_FraigMan_t * p )
-{
-    double nMemory;
-    nMemory = (double)Ivy_ManObjNum(p->pManAig)*p->nSimWords*sizeof(unsigned)/(1<<20);
-    printf( "SimWords = %d. Rounds = %d. Mem = %0.2f Mb.  ", p->nSimWords, p->nSimRounds, nMemory );
-    printf( "Classes: Beg = %d. End = %d.\n", p->nClassesBeg, p->nClassesEnd );
-    printf( "Limits: BTNode = %d. BTMiter = %d.\n", p->pParams->nBTLimitNode, p->pParams->nBTLimitMiter );
-    printf( "Proof = %d. Counter-example = %d. Fail = %d. FailReal = %d. Zero = %d.\n", 
-        p->nSatProof, p->nSatCallsSat, p->nSatFails, p->nSatFailsReal, p->nClassesZero );
-    printf( "Final = %d. Miter = %d. Total = %d. Mux = %d. (Exor = %d.) SatVars = %d.\n", 
-        Ivy_ManNodeNum(p->pManFraig), p->nNodesMiter, Ivy_ManNodeNum(p->pManAig), 0, 0, p->nSatVars );
-    if ( p->pSat ) Sat_SolverPrintStats( stdout, p->pSat );
-    PRT( "AIG simulation  ", p->timeSim  );
-    PRT( "AIG traversal   ", p->timeTrav  );
-    PRT( "SAT solving     ", p->timeSat   );
-    PRT( "    Unsat       ", p->timeSatUnsat );
-    PRT( "    Sat         ", p->timeSatSat   );
-    PRT( "    Fail        ", p->timeSatFail  );
-    PRT( "Class refining  ", p->timeRef   );
-    PRT( "TOTAL RUNTIME   ", p->timeTotal );
-    if ( p->time1 ) { PRT( "time1           ", p->time1 ); }
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Assigns random patterns to the PI node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeAssignRandom( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_FraigSim_t * pSims;
-    int i;
-    assert( Ivy_ObjIsPi(pObj) );
-    pSims = Ivy_ObjSim(pObj);
-    for ( i = 0; i < p->nSimWords; i++ )
-        pSims->pData[i] = Ivy_ObjRandomSim();
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Assigns constant patterns to the PI node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeAssignConst( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj, int fConst1 )
-{
-    Ivy_FraigSim_t * pSims;
-    int i;
-    assert( Ivy_ObjIsPi(pObj) );
-    pSims = Ivy_ObjSim(pObj);
-    for ( i = 0; i < p->nSimWords; i++ )
-        pSims->pData[i] = fConst1? ~(unsigned)0 : 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Assings random simulation info for the PIs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigAssignRandom( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    Ivy_ManForEachPi( p->pManAig, pObj, i )
-        Ivy_NodeAssignRandom( p, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Assings distance-1 simulation info for the PIs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigAssignDist1( Ivy_FraigMan_t * p, unsigned * pPat )
-{
-    Ivy_Obj_t * pObj;
-    int i, Limit;
-    Ivy_ManForEachPi( p->pManAig, pObj, i )
-    {
-        Ivy_NodeAssignConst( p, pObj, Ivy_InfoHasBit(pPat, i) );
-//        printf( "%d", Ivy_InfoHasBit(pPat, i) );
-    }
-//    printf( "\n" );
-
-    Limit = IVY_MIN( Ivy_ManPiNum(p->pManAig), p->nSimWords * 32 - 1 );
-    for ( i = 0; i < Limit; i++ )
-        Ivy_InfoXorBit( Ivy_ObjSim( Ivy_ManPi(p->pManAig,i) )->pData, i+1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if simulation info is composed of all zeros.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeHasZeroSim( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_FraigSim_t * pSims;
-    int i;
-    pSims = Ivy_ObjSim(pObj);
-    for ( i = 0; i < p->nSimWords; i++ )
-        if ( pSims->pData[i] )
-            return 0;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if simulation info is composed of all zeros.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeComplementSim( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_FraigSim_t * pSims;
-    int i;
-    pSims = Ivy_ObjSim(pObj);
-    for ( i = 0; i < p->nSimWords; i++ )
-        pSims->pData[i] = ~pSims->pData[i];
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if simulation infos are equal.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeCompareSims( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj0, Ivy_Obj_t * pObj1 )
-{
-    Ivy_FraigSim_t * pSims0, * pSims1;
-    int i;
-    pSims0 = Ivy_ObjSim(pObj0);
-    pSims1 = Ivy_ObjSim(pObj1);
-    for ( i = 0; i < p->nSimWords; i++ )
-        if ( pSims0->pData[i] != pSims1->pData[i] )
-            return 0;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Simulates one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeSimulateSim( Ivy_FraigMan_t * p, Ivy_FraigSim_t * pSims )
-{
-    unsigned * pData, * pData0, * pData1;
-    int i;
-    pData  = pSims->pData;
-    pData0 = pSims->pFanin0->pData;
-    pData1 = pSims->pFanin1->pData;
-    switch( pSims->Type )
-    {
-    case 0:
-        for ( i = 0; i < p->nSimWords; i++ )
-            pData[i] = (pData0[i] & pData1[i]);
-        break;
-    case 1:
-        for ( i = 0; i < p->nSimWords; i++ )
-            pData[i] = ~(pData0[i] & pData1[i]);
-        break;
-    case 2:
-        for ( i = 0; i < p->nSimWords; i++ )
-            pData[i] = (pData0[i] & ~pData1[i]);
-        break;
-    case 3:
-        for ( i = 0; i < p->nSimWords; i++ )
-            pData[i] = (~pData0[i] | pData1[i]);
-        break;
-    case 4:
-        for ( i = 0; i < p->nSimWords; i++ )
-            pData[i] = (~pData0[i] & pData1[i]);
-        break;
-    case 5:
-        for ( i = 0; i < p->nSimWords; i++ )
-            pData[i] = (pData0[i] | ~pData1[i]);
-        break;
-    case 6:
-        for ( i = 0; i < p->nSimWords; i++ )
-            pData[i] = ~(pData0[i] | pData1[i]);
-        break;
-    case 7:
-        for ( i = 0; i < p->nSimWords; i++ )
-            pData[i] = (pData0[i] | pData1[i]);
-        break;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Simulates one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeSimulate( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_FraigSim_t * pSims, * pSims0, * pSims1;
-    int fCompl, fCompl0, fCompl1, i;
-    assert( !Ivy_IsComplement(pObj) );
-    // get hold of the simulation information
-    pSims  = Ivy_ObjSim(pObj);
-    pSims0 = Ivy_ObjSim(Ivy_ObjFanin0(pObj));
-    pSims1 = Ivy_ObjSim(Ivy_ObjFanin1(pObj));
-    // get complemented attributes of the children using their random info
-    fCompl  = pObj->fPhase;
-    fCompl0 = Ivy_ObjFaninPhase(Ivy_ObjChild0(pObj));
-    fCompl1 = Ivy_ObjFaninPhase(Ivy_ObjChild1(pObj));
-    // simulate
-    if ( fCompl0 && fCompl1 )
-    {
-        if ( fCompl )
-            for ( i = 0; i < p->nSimWords; i++ )
-                pSims->pData[i] = (pSims0->pData[i] | pSims1->pData[i]);
-        else
-            for ( i = 0; i < p->nSimWords; i++ )
-                pSims->pData[i] = ~(pSims0->pData[i] | pSims1->pData[i]);
-    }
-    else if ( fCompl0 && !fCompl1 )
-    {
-        if ( fCompl )
-            for ( i = 0; i < p->nSimWords; i++ )
-                pSims->pData[i] = (pSims0->pData[i] | ~pSims1->pData[i]);
-        else
-            for ( i = 0; i < p->nSimWords; i++ )
-                pSims->pData[i] = (~pSims0->pData[i] & pSims1->pData[i]);
-    }
-    else if ( !fCompl0 && fCompl1 )
-    {
-        if ( fCompl )
-            for ( i = 0; i < p->nSimWords; i++ )
-                pSims->pData[i] = (~pSims0->pData[i] | pSims1->pData[i]);
-        else
-            for ( i = 0; i < p->nSimWords; i++ )
-                pSims->pData[i] = (pSims0->pData[i] & ~pSims1->pData[i]);
-    }
-    else // if ( !fCompl0 && !fCompl1 )
-    {
-        if ( fCompl )
-            for ( i = 0; i < p->nSimWords; i++ )
-                pSims->pData[i] = ~(pSims0->pData[i] & pSims1->pData[i]);
-        else
-            for ( i = 0; i < p->nSimWords; i++ )
-                pSims->pData[i] = (pSims0->pData[i] & pSims1->pData[i]);
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes hash value using simulation info.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Ivy_NodeHash( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj )
-{
-    static int s_FPrimes[128] = { 
-        1009, 1049, 1093, 1151, 1201, 1249, 1297, 1361, 1427, 1459, 
-        1499, 1559, 1607, 1657, 1709, 1759, 1823, 1877, 1933, 1997, 
-        2039, 2089, 2141, 2213, 2269, 2311, 2371, 2411, 2467, 2543, 
-        2609, 2663, 2699, 2741, 2797, 2851, 2909, 2969, 3037, 3089, 
-        3169, 3221, 3299, 3331, 3389, 3461, 3517, 3557, 3613, 3671, 
-        3719, 3779, 3847, 3907, 3943, 4013, 4073, 4129, 4201, 4243, 
-        4289, 4363, 4441, 4493, 4549, 4621, 4663, 4729, 4793, 4871, 
-        4933, 4973, 5021, 5087, 5153, 5227, 5281, 5351, 5417, 5471, 
-        5519, 5573, 5651, 5693, 5749, 5821, 5861, 5923, 6011, 6073, 
-        6131, 6199, 6257, 6301, 6353, 6397, 6481, 6563, 6619, 6689, 
-        6737, 6803, 6863, 6917, 6977, 7027, 7109, 7187, 7237, 7309, 
-        7393, 7477, 7523, 7561, 7607, 7681, 7727, 7817, 7877, 7933, 
-        8011, 8039, 8059, 8081, 8093, 8111, 8123, 8147
-    };
-    Ivy_FraigSim_t * pSims;
-    unsigned uHash;
-    int i;
-    assert( p->nSimWords <= 128 );
-    uHash = 0;
-    pSims  = Ivy_ObjSim(pObj);
-    for ( i = 0; i < p->nSimWords; i++ )
-        uHash ^= pSims->pData[i] * s_FPrimes[i];
-    return uHash;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Simulates AIG manager.]
-
-  Description [Assumes that the PI simulation info is attached.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigSimulateOne( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i, clk;
-clk = clock();
-    Ivy_ManForEachNode( p->pManAig, pObj, i )
-    {
-        Ivy_NodeSimulate( p, pObj );
-/*
-        if ( Ivy_ObjFraig(pObj) == NULL )
-            printf( "%3d --- -- %d  :  ", pObj->Id, pObj->fPhase );
-        else
-            printf( "%3d %3d %2d %d  :  ", pObj->Id, Ivy_Regular(Ivy_ObjFraig(pObj))->Id, Ivy_ObjSatNum(Ivy_Regular(Ivy_ObjFraig(pObj))), pObj->fPhase );
-        Extra_PrintBinary( stdout, Ivy_ObjSim(pObj), 30 );
-        printf( "\n" );
-*/
-    }
-p->timeSim += clock() - clk;
-p->nSimRounds++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Simulates AIG manager.]
-
-  Description [Assumes that the PI simulation info is attached.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigSimulateOneSim( Ivy_FraigMan_t * p )
-{
-    Ivy_FraigSim_t * pSims;
-    int clk;
-clk = clock();
-    for ( pSims = p->pSimStart; pSims; pSims = pSims->pNext )
-        Ivy_NodeSimulateSim( p, pSims );
-p->timeSim += clock() - clk;
-p->nSimRounds++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one node to the equivalence class.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeAddToClass( Ivy_Obj_t * pClass, Ivy_Obj_t * pObj )
-{
-    if ( Ivy_ObjClassNodeNext(pClass) == NULL )
-        Ivy_ObjSetClassNodeNext( pClass, pObj );
-    else
-        Ivy_ObjSetClassNodeNext( Ivy_ObjClassNodeLast(pClass), pObj );
-    Ivy_ObjSetClassNodeLast( pClass, pObj );
-    Ivy_ObjSetClassNodeRepr( pObj, pClass );
-    Ivy_ObjSetClassNodeNext( pObj, NULL );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds equivalence class to the list of classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigAddClass( Ivy_FraigList_t * pList, Ivy_Obj_t * pClass )
-{
-    if ( pList->pHead == NULL )
-    {
-        pList->pHead = pClass;
-        pList->pTail = pClass;
-        Ivy_ObjSetEquivListPrev( pClass, NULL );
-        Ivy_ObjSetEquivListNext( pClass, NULL ); 
-    }
-    else
-    {
-        Ivy_ObjSetEquivListNext( pList->pTail, pClass ); 
-        Ivy_ObjSetEquivListPrev( pClass, pList->pTail );
-        Ivy_ObjSetEquivListNext( pClass, NULL ); 
-        pList->pTail = pClass;
-    }
-    pList->nItems++;
-}
- 
-/**Function*************************************************************
-
-  Synopsis    [Updates the list of classes after base class has split.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigInsertClass( Ivy_FraigList_t * pList, Ivy_Obj_t * pBase, Ivy_Obj_t * pClass )
-{
-    Ivy_ObjSetEquivListPrev( pClass, pBase );
-    Ivy_ObjSetEquivListNext( pClass, Ivy_ObjEquivListNext(pBase) ); 
-    if ( Ivy_ObjEquivListNext(pBase) )
-        Ivy_ObjSetEquivListPrev( Ivy_ObjEquivListNext(pBase), pClass );
-    Ivy_ObjSetEquivListNext( pBase, pClass ); 
-    if ( pList->pTail == pBase )
-        pList->pTail = pClass;
-    pList->nItems++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes equivalence class from the list of classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigRemoveClass( Ivy_FraigList_t * pList, Ivy_Obj_t * pClass )
-{
-    if ( pList->pHead == pClass )
-        pList->pHead = Ivy_ObjEquivListNext(pClass);
-    if ( pList->pTail == pClass )
-        pList->pTail = Ivy_ObjEquivListPrev(pClass);
-    if ( Ivy_ObjEquivListPrev(pClass) )
-        Ivy_ObjSetEquivListNext( Ivy_ObjEquivListPrev(pClass), Ivy_ObjEquivListNext(pClass) ); 
-    if ( Ivy_ObjEquivListNext(pClass) )
-        Ivy_ObjSetEquivListPrev( Ivy_ObjEquivListNext(pClass), Ivy_ObjEquivListPrev(pClass) );
-    Ivy_ObjSetEquivListNext( pClass, NULL ); 
-    Ivy_ObjSetEquivListPrev( pClass, NULL );
-    pClass->fMarkA = 0;
-    pList->nItems--;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Count the number of pairs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigCountPairsClasses( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pClass, * pNode;
-    int nPairs = 0, nNodes;
-    return nPairs;
-
-    Ivy_FraigForEachEquivClass( p->lClasses.pHead, pClass )
-    {
-        nNodes = 0;
-        Ivy_FraigForEachClassNode( pClass, pNode )
-            nNodes++;
-        nPairs += nNodes * (nNodes - 1) / 2;
-    }
-    return nPairs;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates initial simulation classes.]
-
-  Description [Assumes that simulation info is assigned.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigCreateClasses( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t ** pTable;
-    Ivy_Obj_t * pObj, * pConst1, * pBin, * pEntry;
-    int i, nTableSize;
-    unsigned Hash;
-    pConst1 = Ivy_ManConst1(p->pManAig);
-    // allocate the table
-    nTableSize = Ivy_ManObjNum(p->pManAig) / 2 + 13;
-    pTable = ALLOC( Ivy_Obj_t *, nTableSize ); 
-    memset( pTable, 0, sizeof(Ivy_Obj_t *) * nTableSize );
-    // collect nodes into the table
-    Ivy_ManForEachObj( p->pManAig, pObj, i )
-    {
-        if ( !Ivy_ObjIsPi(pObj) && !Ivy_ObjIsNode(pObj) )
-            continue;
-        Hash = Ivy_NodeHash( p, pObj );
-        if ( Hash == 0 && Ivy_NodeHasZeroSim( p, pObj ) )
-        {
-            Ivy_NodeAddToClass( pConst1, pObj );
-            continue;
-        }
-        // add the node to the table
-        pBin = pTable[Hash % nTableSize];
-        Ivy_FraigForEachBinNode( pBin, pEntry )
-            if ( Ivy_NodeCompareSims( p, pEntry, pObj ) )
-            {
-                Ivy_NodeAddToClass( pEntry, pObj );
-                break;
-            }
-        // check if the entry was added
-        if ( pEntry )
-            continue;
-        Ivy_ObjSetNodeHashNext( pObj, pBin );
-        pTable[Hash % nTableSize] = pObj;
-    }
-    // collect non-trivial classes
-    assert( p->lClasses.pHead == NULL );
-    Ivy_ManForEachObj( p->pManAig, pObj, i )
-    {
-        if ( !Ivy_ObjIsConst1(pObj) && !Ivy_ObjIsPi(pObj) && !Ivy_ObjIsNode(pObj) )
-            continue;
-        Ivy_ObjSetNodeHashNext( pObj, NULL );
-        if ( Ivy_ObjClassNodeRepr(pObj) == NULL )
-        {
-            assert( Ivy_ObjClassNodeNext(pObj) == NULL );
-            continue;
-        }
-        // recognize the head of the class
-        if ( Ivy_ObjClassNodeNext( Ivy_ObjClassNodeRepr(pObj) ) != NULL )
-            continue;
-        // clean the class representative and add it to the list
-        Ivy_ObjSetClassNodeRepr( pObj, NULL );
-        Ivy_FraigAddClass( &p->lClasses, pObj );
-    }
-    // free the table
-    free( pTable );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recursively refines the class after simulation.]
-
-  Description [Returns 1 if the class has changed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigRefineClass_rec( Ivy_FraigMan_t * p, Ivy_Obj_t * pClass )
-{
-    Ivy_Obj_t * pClassNew, * pListOld, * pListNew, * pNode;
-    int RetValue = 0;
-    // check if there is refinement
-    pListOld = pClass;
-    Ivy_FraigForEachClassNode( Ivy_ObjClassNodeNext(pClass), pClassNew )
-    {
-        if ( !Ivy_NodeCompareSims(p, pClass, pClassNew) )
-        {
-            if ( p->pParams->fPatScores )
-                Ivy_FraigAddToPatScores( p, pClass, pClassNew );
-            break;
-        }
-        pListOld = pClassNew;
-    }
-    if ( pClassNew == NULL )
-        return 0;
-    // set representative of the new class
-    Ivy_ObjSetClassNodeRepr( pClassNew, NULL );
-    // start the new list
-    pListNew = pClassNew;
-    // go through the remaining nodes and sort them into two groups:
-    // (1) matches of the old node; (2) non-matches of the old node
-    Ivy_FraigForEachClassNode( Ivy_ObjClassNodeNext(pClassNew), pNode )
-        if ( Ivy_NodeCompareSims( p, pClass, pNode ) )
-        {
-            Ivy_ObjSetClassNodeNext( pListOld, pNode );
-            pListOld = pNode;
-        }
-        else
-        {
-            Ivy_ObjSetClassNodeNext( pListNew, pNode );
-            Ivy_ObjSetClassNodeRepr( pNode, pClassNew );
-            pListNew = pNode;
-        }
-    // finish both lists
-    Ivy_ObjSetClassNodeNext( pListNew, NULL );
-    Ivy_ObjSetClassNodeNext( pListOld, NULL );
-    // update the list of classes
-    Ivy_FraigInsertClass( &p->lClasses, pClass, pClassNew );
-    // if the old class is trivial, remove it
-    if ( Ivy_ObjClassNodeNext(pClass) == NULL )
-        Ivy_FraigRemoveClass( &p->lClasses, pClass );
-    // if the new class is trivial, remove it; otherwise, try to refine it
-    if ( Ivy_ObjClassNodeNext(pClassNew) == NULL )
-        Ivy_FraigRemoveClass( &p->lClasses, pClassNew );
-    else
-        RetValue = Ivy_FraigRefineClass_rec( p, pClassNew );
-    return RetValue + 1;
-}
- 
-/**Function*************************************************************
-
-  Synopsis    [Creates the counter-example from the successful pattern.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigCheckOutputSimsSavePattern( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj )
-{ 
-    Ivy_FraigSim_t * pSims;
-    int i, k, BestPat, * pModel;
-    // find the word of the pattern
-    pSims = Ivy_ObjSim(pObj);
-    for ( i = 0; i < p->nSimWords; i++ )
-        if ( pSims->pData[i] )
-            break;
-    assert( i < p->nSimWords );
-    // find the bit of the pattern
-    for ( k = 0; k < 32; k++ )
-        if ( pSims->pData[i] & (1 << k) )
-            break;
-    assert( k < 32 );
-    // determine the best pattern
-    BestPat = i * 32 + k;
-    // fill in the counter-example data
-    pModel = ALLOC( int, Ivy_ManPiNum(p->pManFraig) );
-    Ivy_ManForEachPi( p->pManAig, pObj, i )
-    {
-        pModel[i] = Ivy_InfoHasBit(Ivy_ObjSim(pObj)->pData, BestPat);
-//        printf( "%d", pModel[i] );
-    }
-//    printf( "\n" );
-    // set the model
-    assert( p->pManFraig->pData == NULL );
-    p->pManFraig->pData = pModel;
-    return;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the one of the output is already non-constant 0.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigCheckOutputSims( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    // make sure the reference simulation pattern does not detect the bug
-    pObj = Ivy_ManPo( p->pManAig, 0 );
-    assert( Ivy_ObjFanin0(pObj)->fPhase == (unsigned)Ivy_ObjFaninC0(pObj) ); // Ivy_ObjFaninPhase(Ivy_ObjChild0(pObj)) == 0
-    Ivy_ManForEachPo( p->pManAig, pObj, i )
-    {
-        // complement simulation info
-//        if ( Ivy_ObjFanin0(pObj)->fPhase ^ Ivy_ObjFaninC0(pObj) ) // Ivy_ObjFaninPhase(Ivy_ObjChild0(pObj))
-//            Ivy_NodeComplementSim( p, Ivy_ObjFanin0(pObj) );
-        // check 
-        if ( !Ivy_NodeHasZeroSim( p, Ivy_ObjFanin0(pObj) ) )
-        {
-            // create the counter-example from this pattern
-            Ivy_FraigCheckOutputSimsSavePattern( p, Ivy_ObjFanin0(pObj) );
-            return 1;
-        }
-        // complement simulation info
-//        if ( Ivy_ObjFanin0(pObj)->fPhase ^ Ivy_ObjFaninC0(pObj) )
-//            Ivy_NodeComplementSim( p, Ivy_ObjFanin0(pObj) );
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Refines the classes after simulation.]
-
-  Description [Assumes that simulation info is assigned. Returns the
-  number of classes refined.]
-               
-  SideEffects [Large equivalence class of constant 0 may cause problems.]
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigRefineClasses( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pClass, * pClass2;
-    int clk, RetValue, Counter = 0;
-    // check if some outputs already became non-constant
-    // this is a special case when computation can be stopped!!!
-    if ( p->pParams->fProve )
-        Ivy_FraigCheckOutputSims( p );
-    if ( p->pManFraig->pData )
-        return 0;
-    // refine the classed
-clk = clock();
-    Ivy_FraigForEachEquivClassSafe( p->lClasses.pHead, pClass, pClass2 )
-    {
-        if ( pClass->fMarkA )
-            continue;
-        RetValue = Ivy_FraigRefineClass_rec( p, pClass );
-        Counter += ( RetValue > 0 );
-//if ( Ivy_ObjIsConst1(pClass) )
-//printf( "%d ", RetValue );
-//if ( Ivy_ObjIsConst1(pClass) )
-//    p->time1 += clock() - clk;
-    }
-p->timeRef += clock() - clk;
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Print the class.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigPrintClass( Ivy_Obj_t * pClass )
-{
-    Ivy_Obj_t * pObj;
-    printf( "Class {" );
-    Ivy_FraigForEachClassNode( pClass, pObj )
-        printf( " %d(%d)%c", pObj->Id, pObj->Level, pObj->fPhase? '+' : '-' );
-    printf( " }\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Count the number of elements in the class.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigCountClassNodes( Ivy_Obj_t * pClass )
-{
-    Ivy_Obj_t * pObj;
-    int Counter = 0;
-    Ivy_FraigForEachClassNode( pClass, pObj )
-        Counter++;
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints simulation classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigPrintSimClasses( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pClass;
-    Ivy_FraigForEachEquivClass( p->lClasses.pHead, pClass )
-    {
-//        Ivy_FraigPrintClass( pClass );
-        printf( "%d ", Ivy_FraigCountClassNodes( pClass ) );
-    }
-//    printf( "\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Generated const 0 pattern.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigSavePattern0( Ivy_FraigMan_t * p )
-{
-    memset( p->pPatWords, 0, sizeof(unsigned) * p->nPatWords );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [[Generated const 1 pattern.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigSavePattern1( Ivy_FraigMan_t * p )
-{
-    memset( p->pPatWords, 0xff, sizeof(unsigned) * p->nPatWords );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Generates the counter-example satisfying the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int * Ivy_FraigCreateModel( Ivy_FraigMan_t * p )
-{
-    int * pModel;
-    Ivy_Obj_t * pObj;
-    int i;
-    pModel = ALLOC( int, Ivy_ManPiNum(p->pManFraig) );
-    Ivy_ManForEachPi( p->pManFraig, pObj, i )
-        pModel[i] = ( p->pSat->model.ptr[Ivy_ObjSatNum(pObj)] == l_True );
-    return pModel;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Copy pattern from the solver into the internal storage.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigSavePattern( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    memset( p->pPatWords, 0, sizeof(unsigned) * p->nPatWords );
-    Ivy_ManForEachPi( p->pManFraig, pObj, i )
-//    Vec_PtrForEachEntry( p->vPiVars, pObj, i )
-        if ( p->pSat->model.ptr[Ivy_ObjSatNum(pObj)] == l_True )
-            Ivy_InfoSetBit( p->pPatWords, i );
-//            Ivy_InfoSetBit( p->pPatWords, pObj->Id - 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Copy pattern from the solver into the internal storage.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigSavePattern2( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    memset( p->pPatWords, 0, sizeof(unsigned) * p->nPatWords );
-//    Ivy_ManForEachPi( p->pManFraig, pObj, i )
-    Vec_PtrForEachEntry( p->vPiVars, pObj, i )
-        if ( p->pSat->model.ptr[Ivy_ObjSatNum(pObj)] == l_True )
-//            Ivy_InfoSetBit( p->pPatWords, i );
-            Ivy_InfoSetBit( p->pPatWords, pObj->Id - 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Copy pattern from the solver into the internal storage.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigSavePattern3( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    for ( i = 0; i < p->nPatWords; i++ )
-        p->pPatWords[i] = Ivy_ObjRandomSim();
-    Vec_PtrForEachEntry( p->vPiVars, pObj, i )
-        if ( Ivy_InfoHasBit( p->pPatWords, pObj->Id - 1 ) ^ (p->pSat->model.ptr[Ivy_ObjSatNum(pObj)] == l_True) )
-            Ivy_InfoXorBit( p->pPatWords, pObj->Id - 1 );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Performs simulation of the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigSimulate( Ivy_FraigMan_t * p )
-{
-    int nChanges, nClasses;
-    // start the classes
-    Ivy_FraigAssignRandom( p );
-    Ivy_FraigSimulateOne( p );
-    Ivy_FraigCreateClasses( p );
-//printf( "Starting classes = %5d.   Pairs = %6d.\n", p->lClasses.nItems, Ivy_FraigCountPairsClasses(p) );
-    // refine classes by walking 0/1 patterns
-    Ivy_FraigSavePattern0( p );
-    Ivy_FraigAssignDist1( p, p->pPatWords );
-    Ivy_FraigSimulateOne( p );
-    nChanges = Ivy_FraigRefineClasses( p );
-    if ( p->pManFraig->pData )
-        return;
-//printf( "Refined classes  = %5d.   Changes = %4d.   Pairs = %6d.\n", p->lClasses.nItems, nChanges, Ivy_FraigCountPairsClasses(p) );
-    Ivy_FraigSavePattern1( p );
-    Ivy_FraigAssignDist1( p, p->pPatWords );
-    Ivy_FraigSimulateOne( p );
-    nChanges = Ivy_FraigRefineClasses( p );
-    if ( p->pManFraig->pData )
-        return;
-//printf( "Refined classes  = %5d.   Changes = %4d.   Pairs = %6d.\n", p->lClasses.nItems, nChanges, Ivy_FraigCountPairsClasses(p) );
-    // refine classes by random simulation
-    do {
-        Ivy_FraigAssignRandom( p );
-        Ivy_FraigSimulateOne( p );
-        nClasses = p->lClasses.nItems;
-        nChanges = Ivy_FraigRefineClasses( p );
-        if ( p->pManFraig->pData )
-            return;
-//printf( "Refined classes  = %5d.   Changes = %4d.   Pairs = %6d.\n", p->lClasses.nItems, nChanges, Ivy_FraigCountPairsClasses(p) );
-    } while ( (double)nChanges / nClasses > p->pParams->dSimSatur );
-//    Ivy_FraigPrintSimClasses( p );
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Cleans pattern scores.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigCleanPatScores( Ivy_FraigMan_t * p )
-{
-    int i, nLimit = p->nSimWords * 32;
-    for ( i = 0; i < nLimit; i++ )
-        p->pPatScores[i] = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds to pattern scores.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigAddToPatScores( Ivy_FraigMan_t * p, Ivy_Obj_t * pClass, Ivy_Obj_t * pClassNew )
-{
-    Ivy_FraigSim_t * pSims0, * pSims1;
-    unsigned uDiff;
-    int i, w;
-    // get hold of the simulation information
-    pSims0 = Ivy_ObjSim(pClass);
-    pSims1 = Ivy_ObjSim(pClassNew);
-    // iterate through the differences and record the score
-    for ( w = 0; w < p->nSimWords; w++ )
-    {
-        uDiff = pSims0->pData[w] ^ pSims1->pData[w];
-        if ( uDiff == 0 )
-            continue;
-        for ( i = 0; i < 32; i++ )
-            if ( uDiff & ( 1 << i ) )
-                p->pPatScores[w*32+i]++;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Selects the best pattern.]
-
-  Description [Returns 1 if such pattern is found.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigSelectBestPat( Ivy_FraigMan_t * p )
-{
-    Ivy_FraigSim_t * pSims;
-    Ivy_Obj_t * pObj;
-    int i, nLimit = p->nSimWords * 32, MaxScore = 0, BestPat = -1;
-    for ( i = 1; i < nLimit; i++ )
-    {
-        if ( MaxScore < p->pPatScores[i] )
-        {
-            MaxScore = p->pPatScores[i];
-            BestPat = i;
-        }
-    }
-    if ( MaxScore == 0 )
-        return 0;
-//    if ( MaxScore > p->pParams->MaxScore )
-//    printf( "Max score is %3d.  ", MaxScore );
-    // copy the best pattern into the selected pattern
-    memset( p->pPatWords, 0, sizeof(unsigned) * p->nPatWords );
-    Ivy_ManForEachPi( p->pManAig, pObj, i )
-    {
-        pSims = Ivy_ObjSim(pObj);
-        if ( Ivy_InfoHasBit(pSims->pData, BestPat) )
-            Ivy_InfoSetBit(p->pPatWords, i);
-    }
-    return MaxScore;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Resimulates fraiging manager after finding a counter-example.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigResimulate( Ivy_FraigMan_t * p )
-{
-    int nChanges;
-    Ivy_FraigAssignDist1( p, p->pPatWords );
-    Ivy_FraigSimulateOne( p );
-    if ( p->pParams->fPatScores )
-        Ivy_FraigCleanPatScores( p );
-    nChanges = Ivy_FraigRefineClasses( p );
-    if ( p->pManFraig->pData )
-        return;
-    if ( nChanges < 1 )
-        printf( "Error: A counter-example did not refine classes!\n" );
-    assert( nChanges >= 1 );
-//printf( "Refined classes! = %5d.   Changes = %4d.\n", p->lClasses.nItems, nChanges );
-    if ( !p->pParams->fPatScores )
-        return;
-
-    // perform additional simulation using dist1 patterns derived from successful patterns
-    while ( Ivy_FraigSelectBestPat(p) > p->pParams->MaxScore )
-    {
-        Ivy_FraigAssignDist1( p, p->pPatWords );
-        Ivy_FraigSimulateOne( p );
-        Ivy_FraigCleanPatScores( p );
-        nChanges = Ivy_FraigRefineClasses( p );
-        if ( p->pManFraig->pData )
-            return;
-//printf( "Refined class!!! = %5d.   Changes = %4d.   Pairs = %6d.\n", p->lClasses.nItems, nChanges, Ivy_FraigCountPairsClasses(p) );
-        if ( nChanges == 0 )
-            break;
-    }
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Prints the status of the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigMiterPrint( Ivy_Man_t * pNtk, char * pString, int clk, int fVerbose )
-{
-    if ( !fVerbose )
-        return;
-    printf( "Nodes = %7d.  Levels = %4d.  ", Ivy_ManNodeNum(pNtk), Ivy_ManLevels(pNtk) );
-    PRT( pString, clock() - clk );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Reports the status of the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigMiterStatus( Ivy_Man_t * pMan )
-{
-    Ivy_Obj_t * pObj, * pObjNew;
-    int i, CountConst0 = 0, CountNonConst0 = 0, CountUndecided = 0;
-    if ( pMan->pData )
-        return 0;
-    Ivy_ManForEachPo( pMan, pObj, i )
-    {
-        pObjNew = Ivy_ObjChild0(pObj);
-        // check if the output is constant 1
-        if ( pObjNew == pMan->pConst1 )
-        {
-            CountNonConst0++;
-            continue;
-        }
-        // check if the output is constant 0
-        if ( pObjNew == Ivy_Not(pMan->pConst1) )
-        {
-            CountConst0++;
-            continue;
-        }
-        // check if the output can be constant 0
-        if ( Ivy_Regular(pObjNew)->fPhase != (unsigned)Ivy_IsComplement(pObjNew) )
-        {
-            CountNonConst0++;
-            continue;
-        }
-        CountUndecided++;
-    }
-/*
-    if ( p->pParams->fVerbose )
-    {
-        printf( "Miter has %d outputs. ", Ivy_ManPoNum(p->pManAig) );
-        printf( "Const0 = %d.  ", CountConst0 );
-        printf( "NonConst0 = %d.  ", CountNonConst0 );
-        printf( "Undecided = %d.  ", CountUndecided );
-        printf( "\n" );
-    }
-*/
-    if ( CountNonConst0 )
-        return 0;
-    if ( CountUndecided )
-        return -1;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Tries to prove each output of the miter until encountering a sat output.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigMiterProve( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pObj, * pObjNew;
-    int i, RetValue, clk = clock();
-    int fVerbose = 0;
-    Ivy_ManForEachPo( p->pManAig, pObj, i )
-    {
-        if ( i && fVerbose )
-        {
-            PRT( "Time", clock() -clk );
-        }
-        pObjNew = Ivy_ObjChild0Equiv(pObj);
-        // check if the output is constant 1
-        if ( pObjNew == p->pManFraig->pConst1 )
-        {
-            if ( fVerbose )
-                printf( "Output %2d (out of %2d) is constant 1.  ", i, Ivy_ManPoNum(p->pManAig) );
-            // assing constant 0 model
-            p->pManFraig->pData = ALLOC( int, Ivy_ManPiNum(p->pManFraig) );
-            memset( p->pManFraig->pData, 0, sizeof(int) * Ivy_ManPiNum(p->pManFraig) );
-            break;
-        }
-        // check if the output is constant 0
-        if ( pObjNew == Ivy_Not(p->pManFraig->pConst1) )
-        {
-            if ( fVerbose )
-                printf( "Output %2d (out of %2d) is already constant 0.  ", i, Ivy_ManPoNum(p->pManAig) );
-            continue;
-        }
-        // check if the output can be constant 0
-        if ( Ivy_Regular(pObjNew)->fPhase != (unsigned)Ivy_IsComplement(pObjNew) )
-        {
-            if ( fVerbose )
-                printf( "Output %2d (out of %2d) cannot be constant 0.  ", i, Ivy_ManPoNum(p->pManAig) );
-            // assing constant 0 model
-            p->pManFraig->pData = ALLOC( int, Ivy_ManPiNum(p->pManFraig) );
-            memset( p->pManFraig->pData, 0, sizeof(int) * Ivy_ManPiNum(p->pManFraig) );
-            break;
-        }
-/*
-        // check the representative of this node
-        pRepr = Ivy_ObjClassNodeRepr(Ivy_ObjFanin0(pObj));
-        if ( Ivy_Regular(pRepr) != p->pManAig->pConst1 )
-            printf( "Representative is not constant 1.\n" );
-        else
-            printf( "Representative is constant 1.\n" );
-*/
-        // try to prove the output constant 0
-        RetValue = Ivy_FraigNodeIsConst( p, Ivy_Regular(pObjNew) );
-        if ( RetValue == 1 )  // proved equivalent
-        {
-            if ( fVerbose )
-                printf( "Output %2d (out of %2d) was proved constant 0.  ", i, Ivy_ManPoNum(p->pManAig) );
-            // set the constant miter
-            Ivy_ObjFanin0(pObj)->pEquiv = Ivy_NotCond( p->pManFraig->pConst1, !Ivy_ObjFaninC0(pObj) );
-            continue;
-        }
-        if ( RetValue == -1 ) // failed
-        {
-            if ( fVerbose )
-                printf( "Output %2d (out of %2d) has timed out at %d backtracks.  ", i, Ivy_ManPoNum(p->pManAig), p->pParams->nBTLimitMiter );
-            continue;
-        }
-        // proved satisfiable
-        if ( fVerbose )
-            printf( "Output %2d (out of %2d) was proved NOT a constant 0.  ", i, Ivy_ManPoNum(p->pManAig) );
-        // create the model
-        p->pManFraig->pData = Ivy_FraigCreateModel(p);
-        break;
-    }
-    if ( fVerbose )
-    {
-        PRT( "Time", clock() -clk );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fraiging for the internal nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigSweep( Ivy_FraigMan_t * p )
-{
-    Ivy_Obj_t * pObj;//, * pTemp;
-    int i, k = 0;
-p->nClassesZero = p->lClasses.pHead? (Ivy_ObjIsConst1(p->lClasses.pHead) ? Ivy_FraigCountClassNodes(p->lClasses.pHead) : 0) : 0;
-p->nClassesBeg  = p->lClasses.nItems;
-    // duplicate internal nodes
-    p->pProgress = Extra_ProgressBarStart( stdout, Ivy_ManNodeNum(p->pManAig) );
-    Ivy_ManForEachNode( p->pManAig, pObj, i )
-    {
-        Extra_ProgressBarUpdate( p->pProgress, k++, NULL );
-        // default to simple strashing if simulation detected a counter-example for a PO
-        if ( p->pManFraig->pData )
-            pObj->pEquiv = Ivy_And( p->pManFraig, Ivy_ObjChild0Equiv(pObj), Ivy_ObjChild1Equiv(pObj) );
-        else
-            pObj->pEquiv = Ivy_FraigAnd( p, pObj );
-        assert( pObj->pEquiv != NULL );
-//        pTemp = Ivy_Regular(pObj->pEquiv);
-//        assert( Ivy_Regular(pObj->pEquiv)->Type );
-    }
-    Extra_ProgressBarStop( p->pProgress );
-p->nClassesEnd = p->lClasses.nItems;
-    // try to prove the outputs of the miter
-    p->nNodesMiter = Ivy_ManNodeNum(p->pManFraig);
-//    Ivy_FraigMiterStatus( p->pManFraig );
-    if ( p->pParams->fProve && p->pManFraig->pData == NULL )
-        Ivy_FraigMiterProve( p );
-    // add the POs
-    Ivy_ManForEachPo( p->pManAig, pObj, i )
-        Ivy_ObjCreatePo( p->pManFraig, Ivy_ObjChild0Equiv(pObj) );
-    // clean the old manager
-    Ivy_ManForEachObj( p->pManAig, pObj, i )
-        pObj->pFanout = pObj->pNextFan0 = pObj->pNextFan1 = pObj->pPrevFan0 = pObj->pPrevFan1 = NULL;
-    // clean the new manager
-    Ivy_ManForEachObj( p->pManFraig, pObj, i )
-    {
-        if ( Ivy_ObjFaninVec(pObj) )
-            Vec_PtrFree( Ivy_ObjFaninVec(pObj) );
-        pObj->pNextFan0 = pObj->pNextFan1 = NULL;
-    }
-    // remove dangling nodes 
-    Ivy_ManCleanup( p->pManFraig );
-    // clean up the class marks
-    Ivy_FraigForEachEquivClass( p->lClasses.pHead, pObj )
-        pObj->fMarkA = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs fraiging for one node.]
-
-  Description [Returns the fraiged node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_FraigAnd( Ivy_FraigMan_t * p, Ivy_Obj_t * pObjOld )
-{ 
-    Ivy_Obj_t * pObjNew, * pFanin0New, * pFanin1New, * pObjReprNew;
-    int RetValue;
-    // get the fraiged fanins
-    pFanin0New = Ivy_ObjChild0Equiv(pObjOld);
-    pFanin1New = Ivy_ObjChild1Equiv(pObjOld);
-    // get the candidate fraig node
-    pObjNew = Ivy_And( p->pManFraig, pFanin0New, pFanin1New );
-    // get representative of this class
-    if ( Ivy_ObjClassNodeRepr(pObjOld) == NULL || // this is a unique node
-         (!p->pParams->fDoSparse && Ivy_ObjClassNodeRepr(pObjOld) == p->pManAig->pConst1) ) // this is a sparse node
-    {
-        assert( Ivy_Regular(pFanin0New) != Ivy_Regular(pFanin1New) );
-        assert( pObjNew != Ivy_Regular(pFanin0New) );
-        assert( pObjNew != Ivy_Regular(pFanin1New) );
-        return pObjNew;
-    }
-    // get the fraiged representative
-    pObjReprNew = Ivy_ObjFraig(Ivy_ObjClassNodeRepr(pObjOld));
-    // if the fraiged nodes are the same return
-    if ( Ivy_Regular(pObjNew) == Ivy_Regular(pObjReprNew) )
-        return pObjNew;
-    assert( Ivy_Regular(pObjNew) != Ivy_ManConst1(p->pManFraig) );
-//    printf( "Node = %d. Repr = %d.\n", pObjOld->Id, Ivy_ObjClassNodeRepr(pObjOld)->Id );
-
-    // they are different (the counter-example is in p->pPatWords)
-    RetValue = Ivy_FraigNodesAreEquiv( p, Ivy_Regular(pObjReprNew), Ivy_Regular(pObjNew) );
-    if ( RetValue == 1 )  // proved equivalent
-    {
-        // mark the class as proved
-        if ( Ivy_ObjClassNodeNext(pObjOld) == NULL )
-            Ivy_ObjClassNodeRepr(pObjOld)->fMarkA = 1;
-        return Ivy_NotCond( pObjReprNew, pObjOld->fPhase ^ Ivy_ObjClassNodeRepr(pObjOld)->fPhase );
-    }
-    if ( RetValue == -1 ) // failed
-        return pObjNew;
-    // simulate the counter-example and return the new node
-    Ivy_FraigResimulate( p );
-    return pObjNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints variable activity.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigPrintActivity( Ivy_FraigMan_t * p )
-{
-    int i;
-    for ( i = 0; i < p->nSatVars; i++ )
-        printf( "%d %.3f  ", i, p->pSat->activity[i] );
-    printf( "\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Runs equivalence test for the two nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigNodesAreEquiv( Ivy_FraigMan_t * p, Ivy_Obj_t * pOld, Ivy_Obj_t * pNew )
-{
-    int pLits[4], RetValue, RetValue1, nBTLimit, clk, clk2 = clock();
-
-    // make sure the nodes are not complemented
-    assert( !Ivy_IsComplement(pNew) );
-    assert( !Ivy_IsComplement(pOld) );
-    assert( pNew != pOld );
-
-    // if at least one of the nodes is a failed node, perform adjustments:
-    // if the backtrack limit is small, simply skip this node
-    // if the backtrack limit is > 10, take the quare root of the limit
-    nBTLimit = p->pParams->nBTLimitNode;
-    if ( nBTLimit > 0 && (pOld->fFailTfo || pNew->fFailTfo) )
-    {
-        p->nSatFails++;
-        // fail immediately
-//        return -1;
-        if ( nBTLimit <= 10 )
-            return -1;
-        nBTLimit = (int)pow(nBTLimit, 0.7);
-    }
-    p->nSatCalls++;
-
-    // make sure the solver is allocated and has enough variables
-    if ( p->pSat == NULL )
-    {
-        p->pSat = sat_solver_new();
-        p->nSatVars = 1;
-        sat_solver_setnvars( p->pSat, 1000 );
-        // var 0 is reserved for const1 node - add the clause
-//        pLits[0] = toLit( 0 );
-//        sat_solver_addclause( p->pSat, pLits, pLits + 1 );
-    }
-
-    // if the nodes do not have SAT variables, allocate them
-    Ivy_FraigNodeAddToSolver( p, pOld, pNew );
-
-    // prepare variable activity
-    Ivy_FraigSetActivityFactors( p, pOld, pNew ); 
-
-    // solve under assumptions
-    // A = 1; B = 0     OR     A = 1; B = 1 
-clk = clock();
-    pLits[0] = toLitCond( Ivy_ObjSatNum(pOld), 0 );
-    pLits[1] = toLitCond( Ivy_ObjSatNum(pNew), pOld->fPhase == pNew->fPhase );
-//Sat_SolverWriteDimacs( p->pSat, "temp.cnf", pLits, pLits + 2, 1 );
-    RetValue1 = sat_solver_solve( p->pSat, pLits, pLits + 2, 
-        (sint64)nBTLimit, (sint64)0, 
-        p->nBTLimitGlobal, p->nInsLimitGlobal );
-p->timeSat += clock() - clk;
-    if ( RetValue1 == l_False )
-    {
-p->timeSatUnsat += clock() - clk;
-        pLits[0] = lit_neg( pLits[0] );
-        pLits[1] = lit_neg( pLits[1] );
-        RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 2 );
-        assert( RetValue );
-        // continue solving the other implication
-        p->nSatCallsUnsat++;
-    }
-    else if ( RetValue1 == l_True )
-    {
-p->timeSatSat += clock() - clk;
-        Ivy_FraigSavePattern( p );
-        p->nSatCallsSat++;
-        return 0;
-    }
-    else // if ( RetValue1 == l_Undef )
-    {
-p->timeSatFail += clock() - clk;
-        // mark the node as the failed node
-        if ( pOld != p->pManFraig->pConst1 ) 
-            pOld->fFailTfo = 1;
-        pNew->fFailTfo = 1;
-        p->nSatFailsReal++;
-        return -1;
-    }
-
-    // if the old node was constant 0, we already know the answer
-    if ( pOld == p->pManFraig->pConst1 )
-    {
-        p->nSatProof++;
-        return 1;
-    }
-
-    // solve under assumptions
-    // A = 0; B = 1     OR     A = 0; B = 0 
-clk = clock();
-    pLits[0] = toLitCond( Ivy_ObjSatNum(pOld), 1 );
-    pLits[1] = toLitCond( Ivy_ObjSatNum(pNew), pOld->fPhase ^ pNew->fPhase );
-    RetValue1 = sat_solver_solve( p->pSat, pLits, pLits + 2, 
-        (sint64)nBTLimit, (sint64)0, 
-        p->nBTLimitGlobal, p->nInsLimitGlobal );
-p->timeSat += clock() - clk;
-    if ( RetValue1 == l_False )
-    {
-p->timeSatUnsat += clock() - clk;
-        pLits[0] = lit_neg( pLits[0] );
-        pLits[1] = lit_neg( pLits[1] );
-        RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 2 );
-        assert( RetValue );
-        p->nSatCallsUnsat++;
-    }
-    else if ( RetValue1 == l_True )
-    {
-p->timeSatSat += clock() - clk;
-        Ivy_FraigSavePattern( p );
-        p->nSatCallsSat++;
-        return 0;
-    }
-    else // if ( RetValue1 == l_Undef )
-    {
-p->timeSatFail += clock() - clk;
-        // mark the node as the failed node
-        pOld->fFailTfo = 1;
-        pNew->fFailTfo = 1;
-        p->nSatFailsReal++;
-        return -1;
-    }
-/*
-    // check BDD proof
-    {
-        int RetVal;
-        PRT( "Sat", clock() - clk2 );
-        clk2 = clock();
-        RetVal = Ivy_FraigNodesAreEquivBdd( pOld, pNew );
-//        printf( "%d ", RetVal );
-        assert( RetVal );
-        PRT( "Bdd", clock() - clk2 );
-        printf( "\n" );
-    }
-*/
-    // return SAT proof
-    p->nSatProof++;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Runs equivalence test for one node.]
-
-  Description [Returns the fraiged node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigNodeIsConst( Ivy_FraigMan_t * p, Ivy_Obj_t * pNew )
-{
-    int pLits[2], RetValue1, RetValue, clk;
-
-    // make sure the nodes are not complemented
-    assert( !Ivy_IsComplement(pNew) );
-    assert( pNew != p->pManFraig->pConst1 );
-    p->nSatCalls++;
-
-    // make sure the solver is allocated and has enough variables
-    if ( p->pSat == NULL )
-    {
-        p->pSat = sat_solver_new();
-        p->nSatVars = 1;
-        sat_solver_setnvars( p->pSat, 1000 );
-        // var 0 is reserved for const1 node - add the clause
-//        pLits[0] = toLit( 0 );
-//        sat_solver_addclause( p->pSat, pLits, pLits + 1 );
-    }
-
-    // if the nodes do not have SAT variables, allocate them
-    Ivy_FraigNodeAddToSolver( p, NULL, pNew );
-
-    // prepare variable activity
-    Ivy_FraigSetActivityFactors( p, NULL, pNew ); 
-
-    // solve under assumptions
-clk = clock();
-    pLits[0] = toLitCond( Ivy_ObjSatNum(pNew), pNew->fPhase );
-    RetValue1 = sat_solver_solve( p->pSat, pLits, pLits + 1, 
-        (sint64)p->pParams->nBTLimitMiter, (sint64)0, 
-        p->nBTLimitGlobal, p->nInsLimitGlobal );
-p->timeSat += clock() - clk;
-    if ( RetValue1 == l_False )
-    {
-p->timeSatUnsat += clock() - clk;
-        pLits[0] = lit_neg( pLits[0] );
-        RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 1 );
-        assert( RetValue );
-        // continue solving the other implication
-        p->nSatCallsUnsat++;
-    }
-    else if ( RetValue1 == l_True )
-    {
-p->timeSatSat += clock() - clk;
-        if ( p->pPatWords )
-            Ivy_FraigSavePattern( p );
-        p->nSatCallsSat++;
-        return 0;
-    }
-    else // if ( RetValue1 == l_Undef )
-    {
-p->timeSatFail += clock() - clk;
-        // mark the node as the failed node
-        pNew->fFailTfo = 1;
-        p->nSatFailsReal++;
-        return -1;
-    }
-
-    // return SAT proof
-    p->nSatProof++;
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Addes clauses to the solver.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigAddClausesMux( Ivy_FraigMan_t * p, Ivy_Obj_t * pNode )
-{
-    Ivy_Obj_t * pNodeI, * pNodeT, * pNodeE;
-    int pLits[4], RetValue, VarF, VarI, VarT, VarE, fCompT, fCompE;
-
-    assert( !Ivy_IsComplement( pNode ) );
-    assert( Ivy_ObjIsMuxType( pNode ) );
-    // get nodes (I = if, T = then, E = else)
-    pNodeI = Ivy_ObjRecognizeMux( pNode, &pNodeT, &pNodeE );
-    // get the variable numbers
-    VarF = Ivy_ObjSatNum(pNode);
-    VarI = Ivy_ObjSatNum(pNodeI);
-    VarT = Ivy_ObjSatNum(Ivy_Regular(pNodeT));
-    VarE = Ivy_ObjSatNum(Ivy_Regular(pNodeE));
-    // get the complementation flags
-    fCompT = Ivy_IsComplement(pNodeT);
-    fCompE = Ivy_IsComplement(pNodeE);
-
-    // f = ITE(i, t, e)
-
-    // i' + t' + f
-    // i' + t  + f'
-    // i  + e' + f
-    // i  + e  + f'
-
-    // create four clauses
-    pLits[0] = toLitCond(VarI, 1);
-    pLits[1] = toLitCond(VarT, 1^fCompT);
-    pLits[2] = toLitCond(VarF, 0);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-    pLits[0] = toLitCond(VarI, 1);
-    pLits[1] = toLitCond(VarT, 0^fCompT);
-    pLits[2] = toLitCond(VarF, 1);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-    pLits[0] = toLitCond(VarI, 0);
-    pLits[1] = toLitCond(VarE, 1^fCompE);
-    pLits[2] = toLitCond(VarF, 0);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-    pLits[0] = toLitCond(VarI, 0);
-    pLits[1] = toLitCond(VarE, 0^fCompE);
-    pLits[2] = toLitCond(VarF, 1);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-
-    // two additional clauses
-    // t' & e' -> f'
-    // t  & e  -> f 
-
-    // t  + e   + f'
-    // t' + e'  + f 
-
-    if ( VarT == VarE )
-    {
-//        assert( fCompT == !fCompE );
-        return;
-    }
-
-    pLits[0] = toLitCond(VarT, 0^fCompT);
-    pLits[1] = toLitCond(VarE, 0^fCompE);
-    pLits[2] = toLitCond(VarF, 1);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-    pLits[0] = toLitCond(VarT, 1^fCompT);
-    pLits[1] = toLitCond(VarE, 1^fCompE);
-    pLits[2] = toLitCond(VarF, 0);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 3 );
-    assert( RetValue );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Addes clauses to the solver.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigAddClausesSuper( Ivy_FraigMan_t * p, Ivy_Obj_t * pNode, Vec_Ptr_t * vSuper )
-{
-    Ivy_Obj_t * pFanin;
-    int * pLits, nLits, RetValue, i;
-    assert( !Ivy_IsComplement(pNode) );
-    assert( Ivy_ObjIsNode( pNode ) );
-    // create storage for literals
-    nLits = Vec_PtrSize(vSuper) + 1;
-    pLits = ALLOC( int, nLits );
-    // suppose AND-gate is A & B = C
-    // add !A => !C   or   A + !C
-    Vec_PtrForEachEntry( vSuper, pFanin, i )
-    {
-        pLits[0] = toLitCond(Ivy_ObjSatNum(Ivy_Regular(pFanin)), Ivy_IsComplement(pFanin));
-        pLits[1] = toLitCond(Ivy_ObjSatNum(pNode), 1);
-        RetValue = sat_solver_addclause( p->pSat, pLits, pLits + 2 );
-        assert( RetValue );
-    }
-    // add A & B => C   or   !A + !B + C
-    Vec_PtrForEachEntry( vSuper, pFanin, i )
-        pLits[i] = toLitCond(Ivy_ObjSatNum(Ivy_Regular(pFanin)), !Ivy_IsComplement(pFanin));
-    pLits[nLits-1] = toLitCond(Ivy_ObjSatNum(pNode), 0);
-    RetValue = sat_solver_addclause( p->pSat, pLits, pLits + nLits );
-    assert( RetValue );
-    free( pLits );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigCollectSuper_rec( Ivy_Obj_t * pObj, Vec_Ptr_t * vSuper, int fFirst, int fUseMuxes )
-{
-    // if the new node is complemented or a PI, another gate begins
-    if ( Ivy_IsComplement(pObj) || Ivy_ObjIsPi(pObj) || (!fFirst && Ivy_ObjRefs(pObj) > 1) || 
-         (fUseMuxes && Ivy_ObjIsMuxType(pObj)) )
-    {
-        Vec_PtrPushUnique( vSuper, pObj );
-        return;
-    }
-    // go through the branches
-    Ivy_FraigCollectSuper_rec( Ivy_ObjChild0(pObj), vSuper, 0, fUseMuxes );
-    Ivy_FraigCollectSuper_rec( Ivy_ObjChild1(pObj), vSuper, 0, fUseMuxes );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collects the supergate.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Ivy_FraigCollectSuper( Ivy_Obj_t * pObj, int fUseMuxes )
-{
-    Vec_Ptr_t * vSuper;
-    assert( !Ivy_IsComplement(pObj) );
-    assert( !Ivy_ObjIsPi(pObj) );
-    vSuper = Vec_PtrAlloc( 4 );
-    Ivy_FraigCollectSuper_rec( pObj, vSuper, 1, fUseMuxes );
-    return vSuper;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the solver clause database.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigObjAddToFrontier( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj, Vec_Ptr_t * vFrontier )
-{
-    assert( !Ivy_IsComplement(pObj) );
-    if ( Ivy_ObjSatNum(pObj) )
-        return;
-    assert( Ivy_ObjSatNum(pObj) == 0 );
-    assert( Ivy_ObjFaninVec(pObj) == NULL );
-    if ( Ivy_ObjIsConst1(pObj) )
-        return;
-//printf( "Assigning node %d number %d\n", pObj->Id, p->nSatVars );
-    Ivy_ObjSetSatNum( pObj, p->nSatVars++ );
-    if ( Ivy_ObjIsNode(pObj) )
-        Vec_PtrPush( vFrontier, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the solver clause database.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_FraigNodeAddToSolver( Ivy_FraigMan_t * p, Ivy_Obj_t * pOld, Ivy_Obj_t * pNew )
-{ 
-    Vec_Ptr_t * vFrontier, * vFanins;
-    Ivy_Obj_t * pNode, * pFanin;
-    int i, k, fUseMuxes = 1;
-    assert( pOld || pNew );
-    // quit if CNF is ready
-    if ( (!pOld || Ivy_ObjFaninVec(pOld)) && (!pNew || Ivy_ObjFaninVec(pNew)) )
-        return;
-    // start the frontier
-    vFrontier = Vec_PtrAlloc( 100 );
-    if ( pOld ) Ivy_FraigObjAddToFrontier( p, pOld, vFrontier );
-    if ( pNew ) Ivy_FraigObjAddToFrontier( p, pNew, vFrontier );
-    // explore nodes in the frontier
-    Vec_PtrForEachEntry( vFrontier, pNode, i )
-    {
-        // create the supergate
-        assert( Ivy_ObjSatNum(pNode) );
-        assert( Ivy_ObjFaninVec(pNode) == NULL );
-        if ( fUseMuxes && Ivy_ObjIsMuxType(pNode) )
-        {
-            vFanins = Vec_PtrAlloc( 4 );
-            Vec_PtrPushUnique( vFanins, Ivy_ObjFanin0( Ivy_ObjFanin0(pNode) ) );
-            Vec_PtrPushUnique( vFanins, Ivy_ObjFanin0( Ivy_ObjFanin1(pNode) ) );
-            Vec_PtrPushUnique( vFanins, Ivy_ObjFanin1( Ivy_ObjFanin0(pNode) ) );
-            Vec_PtrPushUnique( vFanins, Ivy_ObjFanin1( Ivy_ObjFanin1(pNode) ) );
-            Vec_PtrForEachEntry( vFanins, pFanin, k )
-                Ivy_FraigObjAddToFrontier( p, Ivy_Regular(pFanin), vFrontier );
-            Ivy_FraigAddClausesMux( p, pNode );
-        }
-        else
-        {
-            vFanins = Ivy_FraigCollectSuper( pNode, fUseMuxes );
-            Vec_PtrForEachEntry( vFanins, pFanin, k )
-                Ivy_FraigObjAddToFrontier( p, Ivy_Regular(pFanin), vFrontier );
-            Ivy_FraigAddClausesSuper( p, pNode, vFanins );
-        }
-        assert( Vec_PtrSize(vFanins) > 1 );
-        Ivy_ObjSetFaninVec( pNode, vFanins );
-    }
-    Vec_PtrFree( vFrontier );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets variable activities in the cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigSetActivityFactors_rec( Ivy_FraigMan_t * p, Ivy_Obj_t * pObj, int LevelMin, int LevelMax )
-{
-    Vec_Ptr_t * vFanins;
-    Ivy_Obj_t * pFanin;
-    int i, Counter = 0;
-    assert( !Ivy_IsComplement(pObj) );
-    assert( Ivy_ObjSatNum(pObj) );
-    // skip visited variables
-    if ( Ivy_ObjIsTravIdCurrent(p->pManFraig, pObj) )
-        return 0;
-    Ivy_ObjSetTravIdCurrent(p->pManFraig, pObj);
-    // add the PI to the list
-    if ( pObj->Level <= (unsigned)LevelMin || Ivy_ObjIsPi(pObj) )
-        return 0;
-    // set the factor of this variable
-    // (LevelMax-LevelMin) / (pObj->Level-LevelMin) = p->pParams->dActConeBumpMax / ThisBump
-    p->pSat->factors[Ivy_ObjSatNum(pObj)] = p->pParams->dActConeBumpMax * (pObj->Level - LevelMin)/(LevelMax - LevelMin);
-    veci_push(&p->pSat->act_vars, Ivy_ObjSatNum(pObj));
-    // explore the fanins
-    vFanins = Ivy_ObjFaninVec( pObj );
-    Vec_PtrForEachEntry( vFanins, pFanin, i )
-        Counter += Ivy_FraigSetActivityFactors_rec( p, Ivy_Regular(pFanin), LevelMin, LevelMax );
-    return 1 + Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets variable activities in the cone.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigSetActivityFactors( Ivy_FraigMan_t * p, Ivy_Obj_t * pOld, Ivy_Obj_t * pNew )
-{
-    int clk, LevelMin, LevelMax;
-    assert( pOld || pNew );
-clk = clock(); 
-    // reset the active variables
-    veci_resize(&p->pSat->act_vars, 0);
-    // prepare for traversal
-    Ivy_ManIncrementTravId( p->pManFraig );
-    // determine the min and max level to visit
-    assert( p->pParams->dActConeRatio > 0 && p->pParams->dActConeRatio < 1 );
-    LevelMax = IVY_MAX( (pNew ? pNew->Level : 0), (pOld ? pOld->Level : 0) );
-    LevelMin = (int)(LevelMax * (1.0 - p->pParams->dActConeRatio));
-    // traverse
-    if ( pOld && !Ivy_ObjIsConst1(pOld) )
-        Ivy_FraigSetActivityFactors_rec( p, pOld, LevelMin, LevelMax );
-    if ( pNew && !Ivy_ObjIsConst1(pNew) )
-        Ivy_FraigSetActivityFactors_rec( p, pNew, LevelMin, LevelMax );
-//Ivy_FraigPrintActivity( p );
-p->timeTrav += clock() - clk;
-    return 1;
-}
-
-
-
-#include "cuddInt.h"
-
-/**Function*************************************************************
-
-  Synopsis    [Checks equivalence using BDDs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-DdNode * Ivy_FraigNodesAreEquivBdd_int( DdManager * dd, DdNode * bFunc, Vec_Ptr_t * vFront, int Level )
-{
-    DdNode ** pFuncs;
-    DdNode * bFuncNew;
-    Vec_Ptr_t * vTemp;
-    Ivy_Obj_t * pObj, * pFanin;
-    int i, NewSize;
-    // create new frontier
-    vTemp = Vec_PtrAlloc( 100 );
-    Vec_PtrForEachEntry( vFront, pObj, i )
-    {
-        if ( (int)pObj->Level != Level )
-        {
-            pObj->fMarkB = 1;
-            pObj->TravId = Vec_PtrSize(vTemp);
-            Vec_PtrPush( vTemp, pObj );
-            continue;
-        }
-
-        pFanin = Ivy_ObjFanin0(pObj);
-        if ( pFanin->fMarkB == 0 )
-        {
-            pFanin->fMarkB = 1;
-            pFanin->TravId = Vec_PtrSize(vTemp);
-            Vec_PtrPush( vTemp, pFanin );
-        }
-
-        pFanin = Ivy_ObjFanin1(pObj);
-        if ( pFanin->fMarkB == 0 )
-        {
-            pFanin->fMarkB = 1;
-            pFanin->TravId = Vec_PtrSize(vTemp);
-            Vec_PtrPush( vTemp, pFanin );
-        }
-    }
-    // collect the permutation
-    NewSize = IVY_MAX(dd->size, Vec_PtrSize(vTemp));
-    pFuncs = ALLOC( DdNode *, NewSize );
-    Vec_PtrForEachEntry( vFront, pObj, i )
-    {
-        if ( (int)pObj->Level != Level )
-            pFuncs[i] = Cudd_bddIthVar( dd, pObj->TravId );
-        else
-            pFuncs[i] = Cudd_bddAnd( dd, 
-                Cudd_NotCond( Cudd_bddIthVar(dd, Ivy_ObjFanin0(pObj)->TravId), Ivy_ObjFaninC0(pObj) ),
-                Cudd_NotCond( Cudd_bddIthVar(dd, Ivy_ObjFanin1(pObj)->TravId), Ivy_ObjFaninC1(pObj) ) );
-        Cudd_Ref( pFuncs[i] );
-    }
-    // add the remaining vars
-    assert( NewSize == dd->size );
-    for ( i = Vec_PtrSize(vFront); i < dd->size; i++ )
-    {
-        pFuncs[i] = Cudd_bddIthVar( dd, i );
-        Cudd_Ref( pFuncs[i] );
-    }
-
-    // create new
-    bFuncNew = Cudd_bddVectorCompose( dd, bFunc, pFuncs ); Cudd_Ref( bFuncNew );
-    // clean trav Id
-    Vec_PtrForEachEntry( vTemp, pObj, i )
-    {
-        pObj->fMarkB = 0;
-        pObj->TravId = 0;
-    }
-    // deref
-    for ( i = 0; i < dd->size; i++ )
-        Cudd_RecursiveDeref( dd, pFuncs[i] );
-    free( pFuncs );
-
-    free( vFront->pArray );
-    *vFront = *vTemp;
-
-    vTemp->nCap = vTemp->nSize = 0;
-    vTemp->pArray = NULL;
-    Vec_PtrFree( vTemp );
-
-    Cudd_Deref( bFuncNew );
-    return bFuncNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks equivalence using BDDs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_FraigNodesAreEquivBdd( Ivy_Obj_t * pObj1, Ivy_Obj_t * pObj2 )
-{
-    static DdManager * dd = NULL;
-    DdNode * bFunc, * bTemp;
-    Vec_Ptr_t * vFront;
-    Ivy_Obj_t * pObj;
-    int i, RetValue, Iter, Level;
-    // start the manager
-    if ( dd == NULL )
-        dd = Cudd_Init( 50, 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 );
-    // create front
-    vFront = Vec_PtrAlloc( 100 );
-    Vec_PtrPush( vFront, pObj1 );
-    Vec_PtrPush( vFront, pObj2 );
-    // get the function
-    bFunc = Cudd_bddXor( dd, Cudd_bddIthVar(dd,0), Cudd_bddIthVar(dd,1) );  Cudd_Ref( bFunc );
-    bFunc = Cudd_NotCond( bFunc, pObj1->fPhase != pObj2->fPhase );
-    // try running BDDs
-    for ( Iter = 0; ; Iter++ )
-    {
-        // find max level
-        Level = 0;
-        Vec_PtrForEachEntry( vFront, pObj, i )
-            if ( Level < (int)pObj->Level )
-                Level = (int)pObj->Level;
-        if ( Level == 0 )
-            break;            
-        bFunc = Ivy_FraigNodesAreEquivBdd_int( dd, bTemp = bFunc, vFront, Level ); Cudd_Ref( bFunc );
-        Cudd_RecursiveDeref( dd, bTemp );
-        if ( bFunc == Cudd_ReadLogicZero(dd) ) // proved
-            {printf( "%d", Iter ); break;}
-        if ( Cudd_DagSize(bFunc) > 1000 )
-            {printf( "b" ); break;}
-        if ( dd->size > 120 )
-            {printf( "s" ); break;}
-        if ( Iter > 50 )
-            {printf( "i" ); break;}
-    }
-    if ( bFunc == Cudd_ReadLogicZero(dd) ) // unsat
-        RetValue = 1;
-    else if ( Level == 0 ) // sat
-        RetValue = 0;
-    else 
-        RetValue = -1; // spaceout/timeout
-    Cudd_RecursiveDeref( dd, bFunc );
-    Vec_PtrFree( vFront );
-    return RetValue;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyHaig.c b/src/aig/ivy/ivyHaig.c
deleted file mode 100644
index 87021600..00000000
--- a/src/aig/ivy/ivyHaig.c
+++ /dev/null
@@ -1,530 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyHaig.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [HAIG management procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyHaig.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-/* 
-    HAIGing rules in working AIG:
-    - Each node in the working AIG has a pointer to the corresponding node in HAIG 
-      (this node is not necessarily the representative of the equivalence class of HAIG nodes)
-    - This pointer is complemented if the AIG node and its corresponding HAIG node have different phase
-
-    Choice node rules in HAIG:
-    - Equivalent nodes are linked into a ring
-    - Exactly one node in the ring has fanouts (this node is called the representative)
-    - The pointer going from a node to the next node in the ring is complemented 
-      if the first node is complemented, compared to the representative node of the equivalence class
-    - (consequence of the above) The representative node always has non-complemented pointer to the next node
-    - New nodes are inserted into the ring immediately after the representative node
-*/
-
-// returns the representative node of the given HAIG node
-static inline Ivy_Obj_t * Ivy_HaigObjRepr( Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pTemp;
-    assert( !Ivy_IsComplement(pObj) );
-    // if the node has no equivalent node or has fanout, it is representative
-    if ( pObj->pEquiv == NULL || Ivy_ObjRefs(pObj) > 0 )
-        return pObj;
-    // the node belongs to a class and is not a representative
-    // complemented edge (pObj->pEquiv) tells if it is complemented w.r.t. the repr
-    for ( pTemp = Ivy_Regular(pObj->pEquiv); pTemp != pObj; pTemp = Ivy_Regular(pTemp->pEquiv) )
-        if ( Ivy_ObjRefs(pTemp) > 0 )
-            break;
-    // return the representative node
-    assert( Ivy_ObjRefs(pTemp) > 0 );
-    return Ivy_NotCond( pTemp, Ivy_IsComplement(pObj->pEquiv) );
-}
-
-// counts the number of nodes in the equivalence class
-static inline int Ivy_HaigObjCountClass( Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pTemp;
-    int Counter;
-    assert( !Ivy_IsComplement(pObj) );
-    assert( Ivy_ObjRefs(pObj) > 0 );
-    if ( pObj->pEquiv == NULL )
-        return 1;
-    assert( !Ivy_IsComplement(pObj->pEquiv) );
-    Counter = 1;
-    for ( pTemp = pObj->pEquiv; pTemp != pObj; pTemp = Ivy_Regular(pTemp->pEquiv) )
-        Counter++;
-    return Counter;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts HAIG for the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManHaigStart( Ivy_Man_t * p, int fVerbose )
-{
-    Vec_Int_t * vLatches;
-    Ivy_Obj_t * pObj;
-    int i;
-    assert( p->pHaig == NULL );
-    p->pHaig = Ivy_ManDup( p );
-
-    if ( fVerbose )
-    {
-        printf( "Starting : " );
-        Ivy_ManPrintStats( p->pHaig );
-    }
-
-    // collect latches of design D and set their values to be DC
-    vLatches = Vec_IntAlloc( 100 );
-    Ivy_ManForEachLatch( p->pHaig, pObj, i )
-    {
-        pObj->Init = IVY_INIT_DC;
-        Vec_IntPush( vLatches, pObj->Id );
-    }
-    p->pHaig->pData = vLatches;
-/*
-    {
-        int x;
-        Ivy_ManShow( p, 0, NULL );
-        Ivy_ManShow( p->pHaig, 1, NULL );
-        x = 0;
-    }
-*/
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transfers the HAIG to the newly created manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManHaigTrasfer( Ivy_Man_t * p, Ivy_Man_t * pNew )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    assert( p->pHaig != NULL );
-    Ivy_ManConst1(pNew)->pEquiv = Ivy_ManConst1(p)->pEquiv;
-    Ivy_ManForEachPi( pNew, pObj, i )
-        pObj->pEquiv = Ivy_ManPi( p, i )->pEquiv;
-    pNew->pHaig = p->pHaig;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops HAIG for the manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManHaigStop( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    assert( p->pHaig != NULL );
-    Vec_IntFree( p->pHaig->pData );
-    Ivy_ManStop( p->pHaig );
-    p->pHaig = NULL;
-    // remove dangling pointers to the HAIG objects
-    Ivy_ManForEachObj( p, pObj, i )
-        pObj->pEquiv = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates a new node in HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManHaigCreateObj( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pEquiv0, * pEquiv1;
-    assert( p->pHaig != NULL );
-    assert( !Ivy_IsComplement(pObj) );
-    if ( Ivy_ObjType(pObj) == IVY_BUF )
-        pObj->pEquiv = Ivy_ObjChild0Equiv(pObj);
-    else if ( Ivy_ObjType(pObj) == IVY_LATCH )
-    {
-//        pObj->pEquiv = Ivy_Latch( p->pHaig, Ivy_ObjChild0Equiv(pObj), pObj->Init );
-        pEquiv0 = Ivy_ObjChild0Equiv(pObj);
-        pEquiv0 = Ivy_NotCond( Ivy_HaigObjRepr(Ivy_Regular(pEquiv0)), Ivy_IsComplement(pEquiv0) );
-        pObj->pEquiv = Ivy_Latch( p->pHaig, pEquiv0, pObj->Init );
-    }
-    else if ( Ivy_ObjType(pObj) == IVY_AND )
-    {
-//        pObj->pEquiv = Ivy_And( p->pHaig, Ivy_ObjChild0Equiv(pObj), Ivy_ObjChild1Equiv(pObj) );
-        pEquiv0 = Ivy_ObjChild0Equiv(pObj);
-        pEquiv0 = Ivy_NotCond( Ivy_HaigObjRepr(Ivy_Regular(pEquiv0)), Ivy_IsComplement(pEquiv0) );
-        pEquiv1 = Ivy_ObjChild1Equiv(pObj);
-        pEquiv1 = Ivy_NotCond( Ivy_HaigObjRepr(Ivy_Regular(pEquiv1)), Ivy_IsComplement(pEquiv1) );
-        pObj->pEquiv = Ivy_And( p->pHaig, pEquiv0, pEquiv1 );
-    }
-    else assert( 0 );
-    // make sure the node points to the representative
-//    pObj->pEquiv = Ivy_NotCond( Ivy_HaigObjRepr(Ivy_Regular(pObj->pEquiv)), Ivy_IsComplement(pObj->pEquiv) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks if the old node is in the TFI of the new node.]
-
-  Description [] 
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ObjIsInTfi_rec( Ivy_Obj_t * pObjNew, Ivy_Obj_t * pObjOld, int Levels )
-{
-    if ( pObjNew == pObjOld )
-        return 1;
-    if ( Levels == 0 || Ivy_ObjIsCi(pObjNew) || Ivy_ObjIsConst1(pObjNew) )
-        return 0;
-    if ( Ivy_ObjIsInTfi_rec( Ivy_ObjFanin0(pObjNew), pObjOld, Levels - 1 ) )
-        return 1;
-    if ( Ivy_ObjIsNode(pObjNew) && Ivy_ObjIsInTfi_rec( Ivy_ObjFanin1(pObjNew), pObjOld, Levels - 1 ) )
-        return 1;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the pair of equivalent nodes in HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManHaigCreateChoice( Ivy_Man_t * p, Ivy_Obj_t * pObjOld, Ivy_Obj_t * pObjNew )
-{
-    Ivy_Obj_t * pObjOldHaig, * pObjNewHaig;
-    Ivy_Obj_t * pObjOldHaigR, * pObjNewHaigR;
-    int fCompl;
-//printf( "\nCreating choice for %d and %d in AIG\n", pObjOld->Id, Ivy_Regular(pObjNew)->Id );
-
-    assert( p->pHaig != NULL );
-    assert( !Ivy_IsComplement(pObjOld) );
-    // get pointers to the representatives of pObjOld and pObjNew
-    pObjOldHaig = pObjOld->pEquiv;
-    pObjNewHaig = Ivy_NotCond( Ivy_Regular(pObjNew)->pEquiv, Ivy_IsComplement(pObjNew) );
-    // get the classes
-    pObjOldHaig = Ivy_NotCond( Ivy_HaigObjRepr(Ivy_Regular(pObjOldHaig)), Ivy_IsComplement(pObjOldHaig) );
-    pObjNewHaig = Ivy_NotCond( Ivy_HaigObjRepr(Ivy_Regular(pObjNewHaig)), Ivy_IsComplement(pObjNewHaig) );
-    // get regular pointers
-    pObjOldHaigR = Ivy_Regular(pObjOldHaig);
-    pObjNewHaigR = Ivy_Regular(pObjNewHaig);
-    // check if there is phase difference between them
-    fCompl = (Ivy_IsComplement(pObjOldHaig) != Ivy_IsComplement(pObjNewHaig));
-    // if the class is the same, nothing to do
-    if ( pObjOldHaigR == pObjNewHaigR )
-        return;
-    // if the second node belongs to a class, do not merge classes (for the time being)
-    if ( Ivy_ObjRefs(pObjOldHaigR) == 0 || pObjNewHaigR->pEquiv != NULL || 
-        Ivy_ObjRefs(pObjNewHaigR) > 0 ) //|| Ivy_ObjIsInTfi_rec(pObjNewHaigR, pObjOldHaigR, 10) )
-    {
-/*
-        if ( pObjNewHaigR->pEquiv != NULL )
-            printf( "c" );
-        if ( Ivy_ObjRefs(pObjNewHaigR) > 0 )
-            printf( "f" );
-        printf( " " );
-*/
-        p->pHaig->nClassesSkip++;
-        return;
-    }
-
-    // add this node to the class of pObjOldHaig
-    assert( Ivy_ObjRefs(pObjOldHaigR) > 0 );
-    assert( !Ivy_IsComplement(pObjOldHaigR->pEquiv) );
-    if ( pObjOldHaigR->pEquiv == NULL )
-        pObjNewHaigR->pEquiv = Ivy_NotCond( pObjOldHaigR, fCompl );
-    else
-        pObjNewHaigR->pEquiv = Ivy_NotCond( pObjOldHaigR->pEquiv, fCompl );
-    pObjOldHaigR->pEquiv = pObjNewHaigR;
-//printf( "Setting choice node %d -> %d.\n", pObjOldHaigR->Id, pObjNewHaigR->Id );
-    // update the class of the new node
-//    Ivy_Regular(pObjNew)->pEquiv = Ivy_NotCond( pObjOldHaigR, fCompl ^ Ivy_IsComplement(pObjNew) );
-//printf( "Creating choice for %d and %d in HAIG\n", pObjOldHaigR->Id, pObjNewHaigR->Id );
-
-//    if ( pObjOldHaigR->Id == 13 )
-//    {
-//        Ivy_ManShow( p, 0 );
-//        Ivy_ManShow( p->pHaig, 1 );
-//    }
-//    if ( !Ivy_ManIsAcyclic( p->pHaig ) )
-//        printf( "HAIG contains a cycle\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Count the number of choices and choice nodes in HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManHaigCountChoices( Ivy_Man_t * p, int * pnChoices )
-{
-    Ivy_Obj_t * pObj;
-    int nChoices, nChoiceNodes, Counter, i;
-    assert( p->pHaig != NULL );
-    nChoices = nChoiceNodes = 0;
-    Ivy_ManForEachObj( p->pHaig, pObj, i )
-    {
-        if ( Ivy_ObjIsTerm(pObj) || i == 0 )
-            continue;
-        if ( Ivy_ObjRefs(pObj) == 0 )
-            continue;
-        Counter = Ivy_HaigObjCountClass( pObj );
-        nChoiceNodes += (int)(Counter > 1);
-        nChoices += Counter - 1;
-//        if ( Counter > 1 )
-//            printf( "Choice node %d %s\n", pObj->Id, Ivy_ObjIsLatch(pObj)? "(latch)": "" );
-    }
-    *pnChoices = nChoices;
-    return nChoiceNodes;
-} 
-
-/**Function*************************************************************
-
-  Synopsis    [Prints statistics of the HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManHaigPostprocess( Ivy_Man_t * p, int fVerbose )
-{
-    int nChoices, nChoiceNodes;
-
-    assert( p->pHaig != NULL );
-
-    if ( fVerbose )
-    {
-        printf( "Final    : " );
-        Ivy_ManPrintStats( p );
-        printf( "HAIG     : " );
-        Ivy_ManPrintStats( p->pHaig );
-
-        // print choice node stats
-        nChoiceNodes = Ivy_ManHaigCountChoices( p, &nChoices );
-        printf( "Total choice nodes = %d. Total choices = %d. Skipped classes = %d.\n", 
-            nChoiceNodes, nChoices, p->pHaig->nClassesSkip ); 
-    }
-
-    if ( Ivy_ManIsAcyclic( p->pHaig ) )
-    {
-        if ( fVerbose )
-            printf( "HAIG is acyclic\n" );
-    }
-    else
-        printf( "HAIG contains a cycle\n" );
-
-//    if ( fVerbose )
-//        Ivy_ManHaigSimulate( p );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Applies the simulation rules.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Ivy_Init_t Ivy_ManHaigSimulateAnd( Ivy_Init_t In0, Ivy_Init_t In1 )
-{
-    assert( In0 != IVY_INIT_NONE && In1 != IVY_INIT_NONE );
-    if ( In0 == IVY_INIT_DC || In1 == IVY_INIT_DC )
-        return IVY_INIT_DC;
-    if ( In0 == IVY_INIT_1 && In1 == IVY_INIT_1 )
-        return IVY_INIT_1;
-    return IVY_INIT_0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Applies the simulation rules.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline Ivy_Init_t Ivy_ManHaigSimulateChoice( Ivy_Init_t In0, Ivy_Init_t In1 )
-{
-    assert( In0 != IVY_INIT_NONE && In1 != IVY_INIT_NONE );
-    if ( (In0 == IVY_INIT_0 && In1 == IVY_INIT_1) || (In0 == IVY_INIT_1 && In1 == IVY_INIT_0) )
-    {
-         printf( "Compatibility fails.\n" );
-         return IVY_INIT_0;
-    }
-    if ( In0 == IVY_INIT_DC && In1 == IVY_INIT_DC )
-        return IVY_INIT_DC;
-    if ( In0 != IVY_INIT_DC )
-        return In0;
-    return In1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Simulate HAIG using modified 3-valued simulation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManHaigSimulate( Ivy_Man_t * p )
-{
-    Vec_Int_t * vNodes, * vLatches, * vLatchesD;
-    Ivy_Obj_t * pObj, * pTemp;
-    Ivy_Init_t In0, In1;
-    int i, k, Counter;
-    int fVerbose = 0;
-
-    // check choices
-    Ivy_ManCheckChoices( p );
-
-    // switch to HAIG
-    assert( p->pHaig != NULL );
-    p = p->pHaig;
-
-if ( fVerbose )
-Ivy_ManForEachPi( p, pObj, i )
-printf( "Setting PI %d\n", pObj->Id );
-
-    // collect latches and nodes in the DFS order
-    vNodes = Ivy_ManDfsSeq( p, &vLatches );
-
-if ( fVerbose )
-Ivy_ManForEachNodeVec( p, vNodes, pObj, i )
-printf( "Collected node %d with fanins %d and %d\n", pObj->Id, Ivy_ObjFanin0(pObj)->Id, Ivy_ObjFanin1(pObj)->Id );
-
-    // set the PI values
-    Ivy_ManConst1(p)->Init = IVY_INIT_1;
-    Ivy_ManForEachPi( p, pObj, i )
-        pObj->Init = IVY_INIT_0;
-
-    // set the latch values
-    Ivy_ManForEachNodeVec( p, vLatches, pObj, i )
-        pObj->Init = IVY_INIT_DC;
-    // set the latches of D to be determinate
-    vLatchesD = p->pData;
-    Ivy_ManForEachNodeVec( p, vLatchesD, pObj, i )
-        pObj->Init = IVY_INIT_0;
-
-    // perform several rounds of simulation
-    for ( k = 0; k < 10; k++ )
-    {
-        // count the number of non-determinate values
-        Counter = 0;
-        Ivy_ManForEachNodeVec( p, vLatches, pObj, i )
-            Counter += ( pObj->Init == IVY_INIT_DC );
-        printf( "Iter %d : Non-determinate = %d\n", k, Counter );    
-        
-        // simulate the internal nodes
-        Ivy_ManForEachNodeVec( p, vNodes, pObj, i )
-        {
-if ( fVerbose )
-printf( "Processing node %d with fanins %d and %d\n", pObj->Id, Ivy_ObjFanin0(pObj)->Id, Ivy_ObjFanin1(pObj)->Id );
-            In0 = Ivy_InitNotCond( Ivy_ObjFanin0(pObj)->Init, Ivy_ObjFaninC0(pObj) );
-            In1 = Ivy_InitNotCond( Ivy_ObjFanin1(pObj)->Init, Ivy_ObjFaninC1(pObj) );
-            pObj->Init = Ivy_ManHaigSimulateAnd( In0, In1 );
-            // simulate the equivalence class if the node is a representative
-            if ( pObj->pEquiv && Ivy_ObjRefs(pObj) > 0 )
-            {
-if ( fVerbose )
-printf( "Processing choice node %d\n", pObj->Id );
-                In0 = pObj->Init;
-                assert( !Ivy_IsComplement(pObj->pEquiv) );
-                for ( pTemp = pObj->pEquiv; pTemp != pObj; pTemp = Ivy_Regular(pTemp->pEquiv) )
-                {
-if ( fVerbose )
-printf( "Processing secondary node %d\n", pTemp->Id );
-                    In1 = Ivy_InitNotCond( pTemp->Init, Ivy_IsComplement(pTemp->pEquiv) );
-                    In0 = Ivy_ManHaigSimulateChoice( In0, In1 );
-                }
-                pObj->Init = In0;
-            }
-        }
-
-        // simulate the latches
-        Ivy_ManForEachNodeVec( p, vLatches, pObj, i )
-        {
-            pObj->Level = Ivy_ObjFanin0(pObj)->Init;
-if ( fVerbose )
-printf( "Using latch %d with fanin %d\n", pObj->Id, Ivy_ObjFanin0(pObj)->Id );
-        }
-        Ivy_ManForEachNodeVec( p, vLatches, pObj, i )
-            pObj->Init = pObj->Level, pObj->Level = 0;
-    }
-    // free arrays
-    Vec_IntFree( vNodes );
-    Vec_IntFree( vLatches );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyMan.c b/src/aig/ivy/ivyMan.c
deleted file mode 100644
index 07faef85..00000000
--- a/src/aig/ivy/ivyMan.c
+++ /dev/null
@@ -1,546 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyMan.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [AIG manager.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivy_.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_ManStart()
-{
-    Ivy_Man_t * p;
-    // start the manager
-    p = ALLOC( Ivy_Man_t, 1 );
-    memset( p, 0, sizeof(Ivy_Man_t) );
-    // perform initializations
-    p->Ghost.Id   = -1;
-    p->nTravIds   =  1;
-    p->fCatchExor =  1;
-    // allocate arrays for nodes
-    p->vPis = Vec_PtrAlloc( 100 );
-    p->vPos = Vec_PtrAlloc( 100 );
-    p->vBufs = Vec_PtrAlloc( 100 );
-    p->vObjs = Vec_PtrAlloc( 100 );
-    // prepare the internal memory manager
-    Ivy_ManStartMemory( p );
-    // create the constant node
-    p->pConst1 = Ivy_ManFetchMemory( p );
-    p->pConst1->fPhase = 1;
-    Vec_PtrPush( p->vObjs, p->pConst1 );
-    p->nCreated = 1;
-    // start the table
-    p->nTableSize = 10007;
-    p->pTable = ALLOC( int, p->nTableSize );
-    memset( p->pTable, 0, sizeof(int) * p->nTableSize );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Duplicates the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_ManStartFrom( Ivy_Man_t * p )
-{
-    Ivy_Man_t * pNew;
-    Ivy_Obj_t * pObj;
-    int i;
-    // create the new manager
-    pNew = Ivy_ManStart();
-    // create the PIs
-    Ivy_ManConst1(p)->pEquiv = Ivy_ManConst1(pNew);
-    Ivy_ManForEachPi( p, pObj, i )
-        pObj->pEquiv = Ivy_ObjCreatePi(pNew);
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Duplicates the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_ManDup( Ivy_Man_t * p )
-{
-    Vec_Int_t * vNodes, * vLatches;
-    Ivy_Man_t * pNew;
-    Ivy_Obj_t * pObj;
-    int i;
-    // collect latches and nodes in the DFS order
-    vNodes = Ivy_ManDfsSeq( p, &vLatches );
-    // create the new manager
-    pNew = Ivy_ManStart();
-    // create the PIs
-    Ivy_ManConst1(p)->pEquiv = Ivy_ManConst1(pNew);
-    Ivy_ManForEachPi( p, pObj, i )
-        pObj->pEquiv = Ivy_ObjCreatePi(pNew);
-    // create the fake PIs for latches
-    Ivy_ManForEachNodeVec( p, vLatches, pObj, i )
-        pObj->pEquiv = Ivy_ObjCreatePi(pNew);
-    // duplicate internal nodes
-    Ivy_ManForEachNodeVec( p, vNodes, pObj, i )
-        if ( Ivy_ObjIsBuf(pObj) )
-            pObj->pEquiv = Ivy_ObjChild0Equiv(pObj);
-        else
-            pObj->pEquiv = Ivy_And( pNew, Ivy_ObjChild0Equiv(pObj), Ivy_ObjChild1Equiv(pObj) );
-    // add the POs
-    Ivy_ManForEachPo( p, pObj, i )
-        Ivy_ObjCreatePo( pNew, Ivy_ObjChild0Equiv(pObj) );
-    // transform additional PI nodes into latches and connect them
-    Ivy_ManForEachNodeVec( p, vLatches, pObj, i )
-    {
-        assert( !Ivy_ObjFaninC0(pObj) );
-        pObj->pEquiv->Type = IVY_LATCH;
-        pObj->pEquiv->Init = pObj->Init;
-        Ivy_ObjConnect( pNew, pObj->pEquiv, Ivy_ObjChild0Equiv(pObj), NULL );
-    }
-    // shrink the arrays
-    Vec_PtrShrink( pNew->vPis, Ivy_ManPiNum(p) );
-    // update the counters of different objects
-    pNew->nObjs[IVY_PI] -= Ivy_ManLatchNum(p);
-    pNew->nObjs[IVY_LATCH] += Ivy_ManLatchNum(p);
-    // free arrays
-    Vec_IntFree( vNodes );
-    Vec_IntFree( vLatches );
-    // make sure structural hashing did not change anything
-    assert( Ivy_ManNodeNum(p)  == Ivy_ManNodeNum(pNew) );
-    assert( Ivy_ManLatchNum(p) == Ivy_ManLatchNum(pNew) );
-    // check the resulting network
-    if ( !Ivy_ManCheck(pNew) )
-        printf( "Ivy_ManMakeSeq(): The check has failed.\n" );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_ManFrames( Ivy_Man_t * pMan, int nLatches, int nFrames, int fInit, Vec_Ptr_t ** pvMapping )
-{
-    Vec_Ptr_t * vMapping;
-    Ivy_Man_t * pNew;
-    Ivy_Obj_t * pObj;
-    int i, f, nPis, nPos, nIdMax;
-    assert( Ivy_ManLatchNum(pMan) == 0 );
-    assert( nFrames > 0 );
-    // prepare the mapping
-    nPis = Ivy_ManPiNum(pMan) - nLatches;
-    nPos = Ivy_ManPoNum(pMan) - nLatches;
-    nIdMax = Ivy_ManObjIdMax(pMan);
-    // create the new manager
-    pNew = Ivy_ManStart();
-    // set the starting values of latch inputs
-    for ( i = 0; i < nLatches; i++ )
-        Ivy_ManPo(pMan, nPos+i)->pEquiv = fInit? Ivy_Not(Ivy_ManConst1(pNew)) : Ivy_ObjCreatePi(pNew);
-    // add timeframes
-    vMapping = Vec_PtrStart( nIdMax * nFrames + 1 );
-    for ( f = 0; f < nFrames; f++ )
-    {
-        // create PIs
-        Ivy_ManConst1(pMan)->pEquiv = Ivy_ManConst1(pNew);
-        for ( i = 0; i < nPis; i++ )
-            Ivy_ManPi(pMan, i)->pEquiv = Ivy_ObjCreatePi(pNew);
-        // transfer values to latch outputs
-        for ( i = 0; i < nLatches; i++ )
-            Ivy_ManPi(pMan, nPis+i)->pEquiv = Ivy_ManPo(pMan, nPos+i)->pEquiv;
-        // perform strashing
-        Ivy_ManForEachNode( pMan, pObj, i )
-            pObj->pEquiv = Ivy_And( pNew, Ivy_ObjChild0Equiv(pObj), Ivy_ObjChild1Equiv(pObj) );
-        // create POs
-        for ( i = 0; i < nPos; i++ )
-            Ivy_ManPo(pMan, i)->pEquiv = Ivy_ObjCreatePo( pNew, Ivy_ObjChild0Equiv(Ivy_ManPo(pMan, i)) );
-        // set the results of latch inputs
-        for ( i = 0; i < nLatches; i++ )
-            Ivy_ManPo(pMan, nPos+i)->pEquiv = Ivy_ObjChild0Equiv(Ivy_ManPo(pMan, nPos+i));
-        // save the pointers in this frame
-        Ivy_ManForEachObj( pMan, pObj, i )
-            Vec_PtrWriteEntry( vMapping, f * nIdMax + i, pObj->pEquiv );
-    }
-    // connect latches
-    if ( !fInit )
-        for ( i = 0; i < nLatches; i++ )
-            Ivy_ObjCreatePo( pNew, Ivy_ManPo(pMan, nPos+i)->pEquiv );
-    // remove dangling nodes
-    Ivy_ManCleanup(pNew);
-    *pvMapping = vMapping;
-    // check the resulting network
-    if ( !Ivy_ManCheck(pNew) )
-        printf( "Ivy_ManFrames(): The check has failed.\n" );
-    return pNew;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManStop( Ivy_Man_t * p )
-{
-    if ( p->time1 ) { PRT( "Update lev  ", p->time1 ); }
-    if ( p->time2 ) { PRT( "Update levR ", p->time2 ); }
-//    Ivy_TableProfile( p );
-//    if ( p->vFanouts )  Ivy_ManStopFanout( p );
-    if ( p->vChunks )   Ivy_ManStopMemory( p );
-    if ( p->vRequired ) Vec_IntFree( p->vRequired );
-    if ( p->vPis )      Vec_PtrFree( p->vPis );
-    if ( p->vPos )      Vec_PtrFree( p->vPos );
-    if ( p->vBufs )     Vec_PtrFree( p->vBufs );
-    if ( p->vObjs )     Vec_PtrFree( p->vObjs );
-    free( p->pTable );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes nodes without fanout.]
-
-  Description [Returns the number of dangling nodes removed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManCleanup( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pNode;
-    int i, nNodesOld;
-    nNodesOld = Ivy_ManNodeNum(p);
-    Ivy_ManForEachObj( p, pNode, i )
-        if ( Ivy_ObjIsNode(pNode) || Ivy_ObjIsLatch(pNode) || Ivy_ObjIsBuf(pNode) )
-            if ( Ivy_ObjRefs(pNode) == 0 )
-                Ivy_ObjDelete_rec( p, pNode, 1 );
-//printf( "Cleanup removed %d nodes.\n", nNodesOld - Ivy_ManNodeNum(p) );
-    return nNodesOld - Ivy_ManNodeNum(p);
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Marks nodes reachable from the given one.]
-
-  Description [Returns the number of dangling nodes removed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManCleanupSeq_rec( Ivy_Obj_t * pObj )
-{
-    if ( Ivy_ObjIsMarkA(pObj) )
-        return;
-    Ivy_ObjSetMarkA(pObj);
-    if ( pObj->pFanin0 != NULL )
-        Ivy_ManCleanupSeq_rec( Ivy_ObjFanin0(pObj) );
-    if ( pObj->pFanin1 != NULL )
-        Ivy_ManCleanupSeq_rec( Ivy_ObjFanin1(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Removes logic that does not feed into POs.]
-
-  Description [Returns the number of dangling nodes removed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManCleanupSeq( Ivy_Man_t * p )
-{
-    Vec_Ptr_t * vNodes;
-    Ivy_Obj_t * pObj;
-    int i, RetValue;
-    // mark the constant and PIs
-    Ivy_ObjSetMarkA( Ivy_ManConst1(p) );
-    Ivy_ManForEachPi( p, pObj, i )
-        Ivy_ObjSetMarkA( pObj );
-    // mark nodes visited from POs
-    Ivy_ManForEachPo( p, pObj, i )
-        Ivy_ManCleanupSeq_rec( pObj );
-    // collect unmarked nodes
-    vNodes = Vec_PtrAlloc( 100 );
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        if ( Ivy_ObjIsMarkA(pObj) )
-            Ivy_ObjClearMarkA(pObj);
-        else
-            Vec_PtrPush( vNodes, pObj );
-    }
-    if ( Vec_PtrSize(vNodes) == 0 )
-    {
-        Vec_PtrFree( vNodes );
-//printf( "Sequential sweep cleaned out %d nodes.\n", 0 );
-        return 0;
-    }
-    // disconnect the marked objects
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-        Ivy_ObjDisconnect( p, pObj );
-    // remove the dangling objects
-    Vec_PtrForEachEntry( vNodes, pObj, i )
-    {
-        assert( Ivy_ObjIsNode(pObj) || Ivy_ObjIsLatch(pObj) || Ivy_ObjIsBuf(pObj) );
-        assert( Ivy_ObjRefs(pObj) == 0 );
-        // update node counters of the manager
-        p->nObjs[pObj->Type]--;
-        p->nDeleted++;
-        // delete buffer from the array of buffers
-        if ( p->fFanout && Ivy_ObjIsBuf(pObj) )
-            Vec_PtrRemove( p->vBufs, pObj );
-        // free the node
-        Vec_PtrWriteEntry( p->vObjs, pObj->Id, NULL );
-        Ivy_ManRecycleMemory( p, pObj );
-    }
-    // return the number of nodes freed
-    RetValue = Vec_PtrSize(vNodes);
-    Vec_PtrFree( vNodes );
-//printf( "Sequential sweep cleaned out %d nodes.\n", RetValue );
-    return RetValue;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Checks if latches form self-loop.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManLatchIsSelfFeed_rec( Ivy_Obj_t * pLatch, Ivy_Obj_t * pLatchRoot )
-{
-    if ( !Ivy_ObjIsLatch(pLatch) && !Ivy_ObjIsBuf(pLatch) )
-        return 0;
-    if ( pLatch == pLatchRoot )
-        return 1;
-    return Ivy_ManLatchIsSelfFeed_rec( Ivy_ObjFanin0(pLatch), pLatchRoot );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks if latches form self-loop.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManLatchIsSelfFeed( Ivy_Obj_t * pLatch )
-{
-    if ( !Ivy_ObjIsLatch(pLatch) )
-        return 0;
-    return Ivy_ManLatchIsSelfFeed_rec( Ivy_ObjFanin0(pLatch), pLatch );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of dangling nodes removed.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     [] 
-
-***********************************************************************/
-int Ivy_ManPropagateBuffers( Ivy_Man_t * p, int fUpdateLevel )
-{
-    Ivy_Obj_t * pNode;
-    int LimitFactor = 100;
-    int NodeBeg = Ivy_ManNodeNum(p);
-    int nSteps;
-    for ( nSteps = 0; Vec_PtrSize(p->vBufs) > 0; nSteps++ )
-    {
-        pNode = Vec_PtrEntryLast(p->vBufs);
-        while ( Ivy_ObjIsBuf(pNode) )
-            pNode = Ivy_ObjReadFirstFanout( p, pNode );
-        // check if this buffer should remain
-        if ( Ivy_ManLatchIsSelfFeed(pNode) )
-        {
-            Vec_PtrPop(p->vBufs);
-            continue;
-        }
-//printf( "Propagating buffer %d with input %d and output %d\n", Ivy_ObjFaninId0(pNode), Ivy_ObjFaninId0(Ivy_ObjFanin0(pNode)), pNode->Id );
-//printf( "Latch num %d\n", Ivy_ManLatchNum(p) );
-        Ivy_NodeFixBufferFanins( p, pNode, fUpdateLevel );
-        if ( nSteps > NodeBeg * LimitFactor )
-        {
-            printf( "Structural hashing is not finished after %d forward latch moves.\n", NodeBeg * LimitFactor );
-            printf( "This circuit cannot be forward-retimed completely. Quitting.\n" );
-            break;
-        }
-    }
-//    printf( "Number of steps = %d. Nodes beg = %d. Nodes end = %d.\n", nSteps, NodeBeg, Ivy_ManNodeNum(p) );
-    return nSteps;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the AIG manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManPrintStats( Ivy_Man_t * p )
-{
-    printf( "PI/PO = %d/%d ", Ivy_ManPiNum(p), Ivy_ManPoNum(p) );
-    printf( "A = %7d. ",       Ivy_ManAndNum(p) );
-    printf( "L = %5d. ",       Ivy_ManLatchNum(p) );
-//    printf( "X = %d. ",       Ivy_ManExorNum(p) );
-//    printf( "B = %3d. ",       Ivy_ManBufNum(p) );
-    printf( "MaxID = %7d. ",   Ivy_ManObjIdMax(p) );
-//    printf( "Cre = %d. ",     p->nCreated );
-//    printf( "Del = %d. ",     p->nDeleted );
-    printf( "Lev = %3d. ",     Ivy_ManLatchNum(p)? -1 : Ivy_ManLevels(p) );
-    printf( "\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Converts a combinational AIG manager into a sequential one.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManMakeSeq( Ivy_Man_t * p, int nLatches, int * pInits )
-{
-    Ivy_Obj_t * pObj, * pLatch;
-    Ivy_Init_t Init;
-    int i;
-    if ( nLatches == 0 )
-        return;
-    assert( nLatches < Ivy_ManPiNum(p) && nLatches < Ivy_ManPoNum(p) );
-    assert( Ivy_ManPiNum(p) == Vec_PtrSize(p->vPis) );
-    assert( Ivy_ManPoNum(p) == Vec_PtrSize(p->vPos) );
-    assert( Vec_PtrSize( p->vBufs ) == 0 );
-    // create fanouts
-    if ( p->fFanout == 0 )
-        Ivy_ManStartFanout( p );
-    // collect the POs to be converted into latches
-    for ( i = 0; i < nLatches; i++ )
-    {
-        // get the latch value
-        Init = pInits? pInits[i] : IVY_INIT_0;
-        // create latch
-        pObj = Ivy_ManPo( p, Ivy_ManPoNum(p) - nLatches + i );
-        pLatch = Ivy_Latch( p, Ivy_ObjChild0(pObj), Init );
-        Ivy_ObjDisconnect( p, pObj );
-        // recycle the old PO object
-        Vec_PtrWriteEntry( p->vObjs, pObj->Id, NULL );
-        Ivy_ManRecycleMemory( p, pObj );
-        // convert the corresponding PI to a buffer and connect it to the latch
-        pObj = Ivy_ManPi( p, Ivy_ManPiNum(p) - nLatches + i );
-        pObj->Type = IVY_BUF;
-        Ivy_ObjConnect( p, pObj, pLatch, NULL );
-        // save the buffer
-        Vec_PtrPush( p->vBufs, pObj );
-    }
-    // shrink the arrays
-    Vec_PtrShrink( p->vPis, Ivy_ManPiNum(p) - nLatches );
-    Vec_PtrShrink( p->vPos, Ivy_ManPoNum(p) - nLatches );
-    // update the counters of different objects
-    p->nObjs[IVY_PI] -= nLatches;
-    p->nObjs[IVY_PO] -= nLatches;
-    p->nObjs[IVY_BUF] += nLatches;
-    p->nDeleted -= 2 * nLatches;
-    // remove dangling nodes
-    Ivy_ManCleanup(p);
-    Ivy_ManCleanupSeq(p);
-/* 
-    // check for dangling nodes
-    Ivy_ManForEachObj( p, pObj, i )
-        if ( !Ivy_ObjIsPi(pObj) && !Ivy_ObjIsPo(pObj) && !Ivy_ObjIsConst1(pObj) )
-        {
-            assert( Ivy_ObjRefs(pObj) > 0 );
-            assert( Ivy_ObjRefs(pObj) == Ivy_ObjFanoutNum(p, pObj) );
-        }
-*/
-    // perform hashing by propagating the buffers
-    Ivy_ManPropagateBuffers( p, 0 );
-    if ( Ivy_ManBufNum(p) )
-        printf( "The number of remaining buffers is %d.\n", Ivy_ManBufNum(p) );
-    // fix the levels
-    Ivy_ManResetLevels( p );
-    // check the resulting network
-    if ( !Ivy_ManCheck(p) )
-        printf( "Ivy_ManMakeSeq(): The check has failed.\n" );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyMem.c b/src/aig/ivy/ivyMem.c
deleted file mode 100644
index 2a96857c..00000000
--- a/src/aig/ivy/ivyMem.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyMem.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Memory management for the AIG nodes.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyMem.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// memory management
-#define IVY_PAGE_SIZE      12        // page size containing 2^IVY_PAGE_SIZE nodes
-#define IVY_PAGE_MASK    4095        // page bitmask (2^IVY_PAGE_SIZE)-1
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the internal memory manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManStartMemory( Ivy_Man_t * p )
-{
-    p->vChunks = Vec_PtrAlloc( 128 );
-    p->vPages = Vec_PtrAlloc( 128 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the internal memory manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManStopMemory( Ivy_Man_t * p )
-{
-    void * pMemory;
-    int i;
-    Vec_PtrForEachEntry( p->vChunks, pMemory, i )
-        free( pMemory );
-    Vec_PtrFree( p->vChunks );
-    Vec_PtrFree( p->vPages );
-    p->pListFree = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates additional memory for the nodes.]
-
-  Description [Allocates IVY_PAGE_SIZE nodes. Aligns memory by 32 bytes. 
-  Records the pointer to the AIG manager in the -1 entry.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManAddMemory( Ivy_Man_t * p )
-{
-    char * pMemory;
-    int i, nBytes;
-    int EntrySizeMax = 128;
-    assert( sizeof(Ivy_Obj_t) <= EntrySizeMax );
-    assert( p->pListFree == NULL );
-//    assert( (Ivy_ManObjNum(p) & IVY_PAGE_MASK) == 0 );
-    // allocate new memory page
-    nBytes = sizeof(Ivy_Obj_t) * (1<<IVY_PAGE_SIZE) + EntrySizeMax;
-    pMemory = ALLOC( char, nBytes );
-    Vec_PtrPush( p->vChunks, pMemory );
-    // align memory at the 32-byte boundary
-    pMemory = pMemory + EntrySizeMax - (((int)pMemory) & (EntrySizeMax-1));
-    // remember the manager in the first entry
-    Vec_PtrPush( p->vPages, pMemory );
-    // break the memory down into nodes
-    p->pListFree = (Ivy_Obj_t *)pMemory;
-    for ( i = 1; i <= IVY_PAGE_MASK; i++ )
-    {
-        *((char **)pMemory) = pMemory + sizeof(Ivy_Obj_t);
-        pMemory += sizeof(Ivy_Obj_t);
-    }
-    *((char **)pMemory) = NULL;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyMulti.c b/src/aig/ivy/ivyMulti.c
deleted file mode 100644
index a7970156..00000000
--- a/src/aig/ivy/ivyMulti.c
+++ /dev/null
@@ -1,301 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyMulti.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Constructing multi-input AND/EXOR gates.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyMulti.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-#define IVY_EVAL_LIMIT    128
-
-typedef struct Ivy_Eva_t_ Ivy_Eva_t;
-struct Ivy_Eva_t_
-{
-    Ivy_Obj_t * pArg;     // the argument node
-    unsigned    Mask;     // the mask of covered nodes
-    int         Weight;   // the number of covered nodes
-};
-
-static void Ivy_MultiPrint( Ivy_Man_t * p, Ivy_Eva_t * pEvals, int nLeaves, int nEvals );
-static int Ivy_MultiCover( Ivy_Man_t * p, Ivy_Eva_t * pEvals, int nLeaves, int nEvals, int nLimit, Vec_Ptr_t * vSols );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Constructs a balanced tree while taking sharing into account.]
-
-  Description [Returns 1 if the implementation exists.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_MultiPlus( Ivy_Man_t * p, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vCone, Ivy_Type_t Type, int nLimit, Vec_Ptr_t * vSols )
-{
-    static Ivy_Eva_t pEvals[IVY_EVAL_LIMIT];
-    Ivy_Eva_t * pEval, * pFan0, * pFan1;
-    Ivy_Obj_t * pObj, * pTemp;
-    int nEvals, nEvalsOld, i, k, x, nLeaves;
-    unsigned uMaskAll;
-
-    // consider special cases
-    nLeaves = Vec_PtrSize(vLeaves);
-    assert( nLeaves > 2 );
-    if ( nLeaves > 32 || nLeaves + Vec_PtrSize(vCone) > IVY_EVAL_LIMIT )
-        return 0;
-//    if ( nLeaves == 1 )
-//        return Vec_PtrEntry( vLeaves, 0 );
-//    if ( nLeaves == 2 )
-//        return Ivy_Oper( Vec_PtrEntry(vLeaves, 0), Vec_PtrEntry(vLeaves, 1), Type );
-
-    // set the leaf entries
-    uMaskAll = ((1 << nLeaves) - 1);
-    nEvals = 0;
-    Vec_PtrForEachEntry( vLeaves, pObj, i )
-    {
-        pEval = pEvals + nEvals;
-        pEval->pArg   = pObj;
-        pEval->Mask   = (1 << nEvals);
-        pEval->Weight = 1;
-        // mark the leaf
-        Ivy_Regular(pObj)->TravId = nEvals;
-        nEvals++;
-    }
-
-    // propagate masks through the cone
-    Vec_PtrForEachEntry( vCone, pObj, i )
-    {
-        pObj->TravId = nEvals + i;
-        if ( Ivy_ObjIsBuf(pObj) )
-            pEvals[pObj->TravId].Mask = pEvals[Ivy_ObjFanin0(pObj)->TravId].Mask;
-        else
-            pEvals[pObj->TravId].Mask = pEvals[Ivy_ObjFanin0(pObj)->TravId].Mask | pEvals[Ivy_ObjFanin1(pObj)->TravId].Mask;
-    }
-
-    // set the internal entries
-    Vec_PtrForEachEntry( vCone, pObj, i )
-    {
-        if ( i == Vec_PtrSize(vCone) - 1 )
-            break;
-        // skip buffers
-        if ( Ivy_ObjIsBuf(pObj) )
-            continue;
-        // skip nodes without external fanout
-        if ( Ivy_ObjRefs(pObj) == 0 )
-            continue;
-        assert( !Ivy_IsComplement(pObj) );
-        pEval = pEvals + nEvals;
-        pEval->pArg   = pObj;
-        pEval->Mask   = pEvals[pObj->TravId].Mask;
-        pEval->Weight = Extra_WordCountOnes(pEval->Mask);
-        // mark the node
-        pObj->TravId = nEvals;
-        nEvals++;
-    }
-
-    // find the available nodes
-    nEvalsOld = nEvals;
-    for ( i = 1; i < nEvals; i++ )
-    for ( k = 0; k < i; k++ )
-    {
-        pFan0 = pEvals + i;
-        pFan1 = pEvals + k;
-        pTemp = Ivy_TableLookup(p, Ivy_ObjCreateGhost(p, pFan0->pArg, pFan1->pArg, Type, IVY_INIT_NONE));
-        // skip nodes in the cone
-        if ( pTemp == NULL || pTemp->fMarkB )
-            continue;
-        // skip the leaves
-        for ( x = 0; x < nLeaves; x++ )
-            if ( pTemp == Ivy_Regular(vLeaves->pArray[x]) )
-                break;
-        if ( x < nLeaves )
-            continue;
-        pEval = pEvals + nEvals;
-        pEval->pArg   = pTemp;
-        pEval->Mask   = pFan0->Mask | pFan1->Mask;
-        pEval->Weight = (pFan0->Mask & pFan1->Mask) ? Extra_WordCountOnes(pEval->Mask) : pFan0->Weight + pFan1->Weight;
-        // save the argument
-        pObj->TravId = nEvals;
-        nEvals++;
-        // quit if the number of entries exceeded the limit
-        if ( nEvals == IVY_EVAL_LIMIT )
-            goto Outside;
-        // quit if we found an acceptable implementation
-        if ( pEval->Mask == uMaskAll )
-            goto Outside;
-    }
-Outside:
-
-//    Ivy_MultiPrint( pEvals, nLeaves, nEvals );
-    if ( !Ivy_MultiCover( p, pEvals, nLeaves, nEvals, nLimit, vSols ) )
-        return 0;
-    assert( Vec_PtrSize( vSols ) > 0 );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes how many uncovered ones this one covers.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_MultiPrint( Ivy_Man_t * p, Ivy_Eva_t * pEvals, int nLeaves, int nEvals )
-{
-    Ivy_Eva_t * pEval;
-    int i, k;
-    for ( i = nLeaves; i < nEvals; i++ )
-    {
-        pEval = pEvals + i;
-        printf( "%2d  (id = %5d)  : |", i-nLeaves, Ivy_ObjId(pEval->pArg) );
-        for ( k = 0; k < nLeaves; k++ )
-        {
-            if ( pEval->Mask & (1 << k) )
-                printf( "+" );
-            else
-                printf( " " );
-        }
-        printf( "|  Lev = %d.\n", Ivy_ObjLevel(pEval->pArg) );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes how many uncovered ones this one covers.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_MultiWeight( unsigned uMask, int nMaskOnes, unsigned uFound )
-{
-    assert( uMask & ~uFound );
-    if ( (uMask & uFound) == 0 )
-        return nMaskOnes;
-    return Extra_WordCountOnes( uMask & ~uFound );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Finds the cover.]
-
-  Description [Returns 1 if the cover is found.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_MultiCover( Ivy_Man_t * p, Ivy_Eva_t * pEvals, int nLeaves, int nEvals, int nLimit, Vec_Ptr_t * vSols )
-{
-    int fVerbose = 0;
-    Ivy_Eva_t * pEval, * pEvalBest;
-    unsigned uMaskAll, uFound, uTemp;
-    int i, k, BestK, WeightBest, WeightCur, LevelBest, LevelCur;
-    uMaskAll = (nLeaves == 32)? (~(unsigned)0) : ((1 << nLeaves) - 1);
-    uFound = 0;
-    // solve the covering problem
-    if ( fVerbose )
-    printf( "Solution:  " );
-    Vec_PtrClear( vSols );
-    for ( i = 0; i < nLimit; i++ )
-    {
-        BestK = -1;
-        for ( k = nEvals - 1; k >= 0; k-- )
-        {
-            pEval = pEvals + k;
-            if ( (pEval->Mask & ~uFound) == 0 )
-                continue;
-            if ( BestK == -1 )
-            {
-                BestK      = k;
-                pEvalBest  = pEval;
-                WeightBest = Ivy_MultiWeight( pEvalBest->Mask, pEvalBest->Weight, uFound );
-                LevelBest  = Ivy_ObjLevel( Ivy_Regular(pEvalBest->pArg) );
-                continue;
-            }
-            // compare BestK and the new one (k)
-            WeightCur = Ivy_MultiWeight( pEval->Mask, pEval->Weight, uFound );
-            LevelCur = Ivy_ObjLevel( Ivy_Regular(pEval->pArg) );
-            if ( WeightBest < WeightCur || 
-                (WeightBest == WeightCur && LevelBest > LevelCur) )
-            {
-                BestK      = k;
-                pEvalBest  = pEval;
-                WeightBest = WeightCur;
-                LevelBest  = LevelCur;
-            }
-        }
-        assert( BestK != -1 );
-        // if the cost is only 1, take the leaf
-        if ( WeightBest == 1 && BestK >= nLeaves )
-        {
-            uTemp = (pEvalBest->Mask & ~uFound);
-            for ( k = 0; k < nLeaves; k++ )
-                if ( uTemp & (1 << k) )
-                    break;
-            assert( k < nLeaves );
-            BestK     = k;
-            pEvalBest = pEvals + BestK;
-        }
-        if ( fVerbose )
-        {
-            if ( BestK < nLeaves )
-                printf( "L(%d) ", BestK );
-            else
-                printf( "%d ", BestK - nLeaves );
-        }
-        // update the found set
-        Vec_PtrPush( vSols, pEvalBest->pArg );
-        uFound |= pEvalBest->Mask;
-        if ( uFound == uMaskAll )
-            break;
-    }
-    if ( uFound == uMaskAll )
-    {
-        if ( fVerbose )
-            printf( "  Found \n\n" );
-        return 1;
-    }
-    else
-    {
-        if ( fVerbose )
-            printf( "  Not found \n\n" );
-        return 0;
-    }
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyMulti8.c b/src/aig/ivy/ivyMulti8.c
deleted file mode 100644
index 059d1500..00000000
--- a/src/aig/ivy/ivyMulti8.c
+++ /dev/null
@@ -1,427 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyMulti.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Constructing multi-input AND/EXOR gates.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyMulti.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Ivy_Eval_t_ Ivy_Eval_t;
-struct Ivy_Eval_t_
-{
-    unsigned Mask   :  5;  // the mask of covered nodes
-    unsigned Weight :  3;  // the number of covered nodes
-    unsigned Cost   :  4;  // the number of overlapping nodes
-    unsigned Level  : 12;  // the level of this node
-    unsigned Fan0   :  4;  // the first fanin
-    unsigned Fan1   :  4;  // the second fanin
-};
-
-static Ivy_Obj_t * Ivy_MultiBuild_rec( Ivy_Eval_t * pEvals, int iNum, Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type );
-static void        Ivy_MultiSort( Ivy_Obj_t ** pArgs, int nArgs );
-static int         Ivy_MultiPushUniqueOrderByLevel( Ivy_Obj_t ** pArray, int nArgs, Ivy_Obj_t * pNode );
-static Ivy_Obj_t * Ivy_MultiEval( Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type );
-
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Constructs the well-balanced tree of gates.]
-
-  Description [Disregards levels and possible logic sharing.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Multi_rec( Ivy_Obj_t ** ppObjs, int nObjs, Ivy_Type_t Type )
-{
-    Ivy_Obj_t * pObj1, * pObj2;
-    if ( nObjs == 1 )
-        return ppObjs[0];
-    pObj1 = Ivy_Multi_rec( ppObjs,           nObjs/2,         Type );
-    pObj2 = Ivy_Multi_rec( ppObjs + nObjs/2, nObjs - nObjs/2, Type );
-    return Ivy_Oper( pObj1, pObj2, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Constructs a balanced tree while taking sharing into account.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Multi( Ivy_Obj_t ** pArgsInit, int nArgs, Ivy_Type_t Type )
-{
-    static char NumBits[32] = {0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5};
-    static Ivy_Eval_t pEvals[15+15*14/2];
-    static Ivy_Obj_t * pArgs[16];
-    Ivy_Eval_t * pEva, * pEvaBest;
-    int nArgsNew, nEvals, i, k;
-    Ivy_Obj_t * pTemp;
-
-    // consider the case of one argument
-    assert( nArgs > 0 );
-    if ( nArgs == 1 )
-        return pArgsInit[0];
-    // consider the case of two arguments
-    if ( nArgs == 2 )
-        return Ivy_Oper( pArgsInit[0], pArgsInit[1], Type );
-
-//Ivy_MultiEval( pArgsInit, nArgs, Type ); printf( "\n" );
-
-    // set the initial ones
-    for ( i = 0; i < nArgs; i++ )
-    {
-        pArgs[i] = pArgsInit[i];
-        pEva = pEvals + i;
-        pEva->Mask   = (1 << i);
-        pEva->Weight = 1;
-        pEva->Cost   = 0; 
-        pEva->Level  = Ivy_Regular(pArgs[i])->Level; 
-        pEva->Fan0   = 0; 
-        pEva->Fan1   = 0; 
-    }
-
-    // find the available nodes
-    pEvaBest = pEvals;
-    nArgsNew = nArgs;
-    for ( i = 1; i < nArgsNew; i++ )
-    for ( k = 0; k < i; k++ )
-        if ( pTemp = Ivy_TableLookup(Ivy_ObjCreateGhost(pArgs[k], pArgs[i], Type, IVY_INIT_NONE)) )
-        {
-            pEva = pEvals + nArgsNew;
-            pEva->Mask   = pEvals[k].Mask | pEvals[i].Mask;
-            pEva->Weight = NumBits[pEva->Mask];
-            pEva->Cost   = pEvals[k].Cost + pEvals[i].Cost + NumBits[pEvals[k].Mask & pEvals[i].Mask]; 
-            pEva->Level  = 1 + IVY_MAX(pEvals[k].Level, pEvals[i].Level); 
-            pEva->Fan0   = k; 
-            pEva->Fan1   = i; 
-//            assert( pEva->Level == (unsigned)Ivy_ObjLevel(pTemp) );
-            // compare
-            if ( pEvaBest->Weight < pEva->Weight ||
-                 pEvaBest->Weight == pEva->Weight && pEvaBest->Cost > pEva->Cost ||
-                 pEvaBest->Weight == pEva->Weight && pEvaBest->Cost == pEva->Cost && pEvaBest->Level > pEva->Level )
-                 pEvaBest = pEva;
-            // save the argument
-            pArgs[nArgsNew++] = pTemp;
-            if ( nArgsNew == 15 )
-                goto Outside;
-        }
-Outside:
-
-//    printf( "Best = %d.\n", pEvaBest - pEvals );
-
-    // the case of no common nodes
-    if ( nArgsNew == nArgs )
-    {
-        Ivy_MultiSort( pArgs, nArgs );
-        return Ivy_MultiBalance_rec( pArgs, nArgs, Type );
-    }
-    // the case of one common node
-    if ( nArgsNew == nArgs + 1 )
-    {
-        assert( pEvaBest - pEvals == nArgs );
-        k = 0;
-        for ( i = 0; i < nArgs; i++ )
-            if ( i != (int)pEvaBest->Fan0 && i != (int)pEvaBest->Fan1 )
-                pArgs[k++] = pArgs[i];
-        pArgs[k++] = pArgs[nArgs];
-        assert( k == nArgs - 1 );
-        nArgs = k;
-        Ivy_MultiSort( pArgs, nArgs );
-        return Ivy_MultiBalance_rec( pArgs, nArgs, Type );
-    }
-    // the case when there is a node that covers everything
-    if ( (int)pEvaBest->Mask == ((1 << nArgs) - 1) )
-        return Ivy_MultiBuild_rec( pEvals, pEvaBest - pEvals, pArgs, nArgsNew, Type ); 
-
-    // evaluate node pairs
-    nEvals = nArgsNew;
-    for ( i = 1; i < nArgsNew; i++ )
-    for ( k = 0; k < i; k++ )
-    {
-        pEva = pEvals + nEvals;
-        pEva->Mask   = pEvals[k].Mask | pEvals[i].Mask;
-        pEva->Weight = NumBits[pEva->Mask];
-        pEva->Cost   = pEvals[k].Cost + pEvals[i].Cost + NumBits[pEvals[k].Mask & pEvals[i].Mask]; 
-        pEva->Level  = 1 + IVY_MAX(pEvals[k].Level, pEvals[i].Level); 
-        pEva->Fan0   = k; 
-        pEva->Fan1   = i; 
-        // compare
-        if ( pEvaBest->Weight < pEva->Weight ||
-             pEvaBest->Weight == pEva->Weight && pEvaBest->Cost > pEva->Cost ||
-             pEvaBest->Weight == pEva->Weight && pEvaBest->Cost == pEva->Cost && pEvaBest->Level > pEva->Level )
-             pEvaBest = pEva;
-        // save the argument
-        nEvals++;
-    }
-    assert( pEvaBest - pEvals >= nArgsNew );
-
-//    printf( "Used (%d, %d).\n", pEvaBest->Fan0, pEvaBest->Fan1 );
-
-    // get the best implementation
-    pTemp = Ivy_MultiBuild_rec( pEvals, pEvaBest - pEvals, pArgs, nArgsNew, Type );
-
-    // collect those not covered by EvaBest
-    k = 0;
-    for ( i = 0; i < nArgs; i++ )
-        if ( (pEvaBest->Mask & (1 << i)) == 0 )
-            pArgs[k++] = pArgs[i];
-    pArgs[k++] = pTemp;
-    assert( k == nArgs - (int)pEvaBest->Weight + 1 );
-    nArgs = k;
-    Ivy_MultiSort( pArgs, nArgs );
-    return Ivy_MultiBalance_rec( pArgs, nArgs, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements multi-input AND/EXOR operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_MultiBuild_rec( Ivy_Eval_t * pEvals, int iNum, Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type )
-{
-    Ivy_Obj_t * pNode0, * pNode1;
-    if ( iNum < nArgs )
-        return pArgs[iNum];
-    pNode0 = Ivy_MultiBuild_rec( pEvals, pEvals[iNum].Fan0, pArgs, nArgs, Type );
-    pNode1 = Ivy_MultiBuild_rec( pEvals, pEvals[iNum].Fan1, pArgs, nArgs, Type );
-    return Ivy_Oper( pNode0, pNode1, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Selection-sorts the nodes in the decreasing over of level.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_MultiSort( Ivy_Obj_t ** pArgs, int nArgs )
-{
-    Ivy_Obj_t * pTemp;
-    int i, j, iBest;
-
-    for ( i = 0; i < nArgs-1; i++ )
-    {
-        iBest = i;
-        for ( j = i+1; j < nArgs; j++ )
-            if ( Ivy_Regular(pArgs[j])->Level > Ivy_Regular(pArgs[iBest])->Level )
-                iBest = j;
-        pTemp = pArgs[i]; 
-        pArgs[i] = pArgs[iBest]; 
-        pArgs[iBest] = pTemp;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Inserts a new node in the order by levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_MultiPushUniqueOrderByLevel( Ivy_Obj_t ** pArray, int nArgs, Ivy_Obj_t * pNode )
-{
-    Ivy_Obj_t * pNode1, * pNode2;
-    int i;
-    // try to find the node in the array
-    for ( i = 0; i < nArgs; i++ )
-        if ( pArray[i] == pNode )
-            return nArgs;
-    // put the node last
-    pArray[nArgs++] = pNode;
-    // find the place to put the new node
-    for ( i = nArgs-1; i > 0; i-- )
-    {
-        pNode1 = pArray[i  ];
-        pNode2 = pArray[i-1];
-        if ( Ivy_Regular(pNode1)->Level <= Ivy_Regular(pNode2)->Level )
-            break;
-        pArray[i  ] = pNode2;
-        pArray[i-1] = pNode1;
-    }
-    return nArgs;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Balances the array recursively.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_MultiBalance_rec( Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type )
-{
-    Ivy_Obj_t * pNodeNew;
-    // consider the case of one argument
-    assert( nArgs > 0 );
-    if ( nArgs == 1 )
-        return pArgs[0];
-    // consider the case of two arguments
-    if ( nArgs == 2 )
-        return Ivy_Oper( pArgs[0], pArgs[1], Type );
-    // get the last two nodes
-    pNodeNew = Ivy_Oper( pArgs[nArgs-1], pArgs[nArgs-2], Type );
-    // add the new node
-    nArgs = Ivy_MultiPushUniqueOrderByLevel( pArgs, nArgs - 2, pNodeNew );
-    return Ivy_MultiBalance_rec( pArgs, nArgs, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements multi-input AND/EXOR operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_MultiEval( Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type )
-{
-    Ivy_Obj_t * pTemp;
-    int i, k;
-    int nArgsOld = nArgs;
-    for ( i = 0; i < nArgs; i++ )
-        printf( "%d[%d] ", i, Ivy_Regular(pArgs[i])->Level );
-    for ( i = 1; i < nArgs; i++ )
-        for ( k = 0; k < i; k++ )
-        {
-            pTemp = Ivy_TableLookup(Ivy_ObjCreateGhost(pArgs[k], pArgs[i], Type, IVY_INIT_NONE));
-            if ( pTemp != NULL )
-            {
-                printf( "%d[%d]=(%d,%d) ", nArgs, Ivy_Regular(pTemp)->Level, k, i );
-                pArgs[nArgs++] = pTemp;
-            }
-        }
-    printf( "     ((%d/%d))    ", nArgsOld, nArgs-nArgsOld );
-    return NULL;
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Old code.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Multi1( Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type )
-{
-    Ivy_Obj_t * pArgsRef[5], * pTemp;
-    int i, k, m, nArgsNew, Counter = 0;
- 
-    
-//Ivy_MultiEval( pArgs, nArgs, Type );  printf( "\n" );
-
-
-    assert( Type == IVY_AND || Type == IVY_EXOR );
-    assert( nArgs > 0 );
-    if ( nArgs == 1 )
-        return pArgs[0];
-
-    // find the nodes with more than one fanout
-    nArgsNew = 0;
-    for ( i = 0; i < nArgs; i++ )
-        if ( Ivy_ObjRefs( Ivy_Regular(pArgs[i]) ) > 0 )
-            pArgsRef[nArgsNew++] = pArgs[i];
-
-    // go through pairs
-    if ( nArgsNew >= 2 )
-    for ( i = 0; i < nArgsNew; i++ )
-    for ( k = i + 1; k < nArgsNew; k++ )
-        if ( pTemp = Ivy_TableLookup(Ivy_ObjCreateGhost(pArgsRef[i], pArgsRef[k], Type, IVY_INIT_NONE)) )
-            Counter++;
-//    printf( "%d", Counter );
-            
-    // go through pairs
-    if ( nArgsNew >= 2 )
-    for ( i = 0; i < nArgsNew; i++ )
-    for ( k = i + 1; k < nArgsNew; k++ )
-        if ( pTemp = Ivy_TableLookup(Ivy_ObjCreateGhost(pArgsRef[i], pArgsRef[k], Type, IVY_INIT_NONE)) )
-        {
-            nArgsNew = 0;
-            for ( m = 0; m < nArgs; m++ )
-                if ( pArgs[m] != pArgsRef[i] && pArgs[m] != pArgsRef[k] )
-                    pArgs[nArgsNew++] = pArgs[m];
-            pArgs[nArgsNew++] = pTemp;
-            assert( nArgsNew == nArgs - 1 );
-            return Ivy_Multi1( pArgs, nArgsNew, Type );
-        }
-    return Ivy_Multi_rec( pArgs, nArgs, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Old code.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Multi2( Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type )
-{
-    assert( Type == IVY_AND || Type == IVY_EXOR );
-    assert( nArgs > 0 );
-    return Ivy_Multi_rec( pArgs, nArgs, Type );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyObj.c b/src/aig/ivy/ivyObj.c
deleted file mode 100644
index 59dda19c..00000000
--- a/src/aig/ivy/ivyObj.c
+++ /dev/null
@@ -1,476 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyObj.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Adding/removing objects.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyObj.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Create the new node assuming it does not exist.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_ObjCreatePi( Ivy_Man_t * p )
-{
-    return Ivy_ObjCreate( p, Ivy_ObjCreateGhost(p, NULL, NULL, IVY_PI, IVY_INIT_NONE) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Create the new node assuming it does not exist.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_ObjCreatePo( Ivy_Man_t * p, Ivy_Obj_t * pDriver )
-{
-    return Ivy_ObjCreate( p, Ivy_ObjCreateGhost(p, pDriver, NULL, IVY_PO, IVY_INIT_NONE) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Create the new node assuming it does not exist.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_ObjCreate( Ivy_Man_t * p, Ivy_Obj_t * pGhost )
-{
-    Ivy_Obj_t * pObj;
-    assert( !Ivy_IsComplement(pGhost) );
-    assert( Ivy_ObjIsGhost(pGhost) );
-    assert( Ivy_TableLookup(p, pGhost) == NULL );
-    // get memory for the new object
-    pObj = Ivy_ManFetchMemory( p );
-    assert( Ivy_ObjIsNone(pObj) );
-    pObj->Id = Vec_PtrSize(p->vObjs);
-    Vec_PtrPush( p->vObjs, pObj );
-    // add basic info (fanins, compls, type, init)
-    pObj->Type = pGhost->Type;
-    pObj->Init = pGhost->Init;
-    // add connections
-    Ivy_ObjConnect( p, pObj, pGhost->pFanin0, pGhost->pFanin1 );
-    // compute level
-    if ( Ivy_ObjIsNode(pObj) )
-        pObj->Level = Ivy_ObjLevelNew(pObj);
-    else if ( Ivy_ObjIsLatch(pObj) )
-        pObj->Level = 0;
-    else if ( Ivy_ObjIsOneFanin(pObj) )
-        pObj->Level = Ivy_ObjFanin0(pObj)->Level;
-    else if ( !Ivy_ObjIsPi(pObj) )
-        assert( 0 );
-    // create phase
-    if ( Ivy_ObjIsNode(pObj) )
-        pObj->fPhase = Ivy_ObjFaninPhase(Ivy_ObjChild0(pObj)) & Ivy_ObjFaninPhase(Ivy_ObjChild1(pObj));
-    else if ( Ivy_ObjIsOneFanin(pObj) )
-        pObj->fPhase = Ivy_ObjFaninPhase(Ivy_ObjChild0(pObj));
-    // set the fail TFO flag
-    if ( Ivy_ObjIsNode(pObj) )
-        pObj->fFailTfo = Ivy_ObjFanin0(pObj)->fFailTfo | Ivy_ObjFanin1(pObj)->fFailTfo;
-    // mark the fanins in a special way if the node is EXOR
-    if ( Ivy_ObjIsExor(pObj) )
-    {
-        Ivy_ObjFanin0(pObj)->fExFan = 1;
-        Ivy_ObjFanin1(pObj)->fExFan = 1;
-    }
-    // add PIs/POs to the arrays
-    if ( Ivy_ObjIsPi(pObj) )
-        Vec_PtrPush( p->vPis, pObj );
-    else if ( Ivy_ObjIsPo(pObj) )
-        Vec_PtrPush( p->vPos, pObj );
-//    else if ( Ivy_ObjIsBuf(pObj) )
-//        Vec_PtrPush( p->vBufs, pObj );
-    if ( p->vRequired && Vec_IntSize(p->vRequired) <= pObj->Id )
-        Vec_IntFillExtra( p->vRequired, 2 * Vec_IntSize(p->vRequired), 1000000 );
-    // update node counters of the manager
-    p->nObjs[Ivy_ObjType(pObj)]++;
-    p->nCreated++;
-
-//    printf( "Adding %sAIG node: ", p->pHaig==NULL? "H":" " );
-//    Ivy_ObjPrintVerbose( p, pObj, p->pHaig==NULL );
-//    printf( "\n" );
-
-    // if HAIG is defined, create a corresponding node
-    if ( p->pHaig )
-        Ivy_ManHaigCreateObj( p, pObj );
-    return pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Connect the object to the fanin.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjConnect( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFan0, Ivy_Obj_t * pFan1 )
-{
-    assert( !Ivy_IsComplement(pObj) );
-    assert( Ivy_ObjIsPi(pObj) || Ivy_ObjIsOneFanin(pObj) || pFan1 != NULL );
-    // add the first fanin
-    pObj->pFanin0 = pFan0;
-    pObj->pFanin1 = pFan1;
-    // increment references of the fanins and add their fanouts
-    if ( Ivy_ObjFanin0(pObj) != NULL )
-    {
-        Ivy_ObjRefsInc( Ivy_ObjFanin0(pObj) );
-        if ( p->fFanout )
-            Ivy_ObjAddFanout( p, Ivy_ObjFanin0(pObj), pObj );
-    }
-    if ( Ivy_ObjFanin1(pObj) != NULL )
-    {
-        Ivy_ObjRefsInc( Ivy_ObjFanin1(pObj) );
-        if ( p->fFanout )
-            Ivy_ObjAddFanout( p, Ivy_ObjFanin1(pObj), pObj );
-    }
-    // add the node to the structural hash table
-    Ivy_TableInsert( p, pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Connect the object to the fanin.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjDisconnect( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    assert( !Ivy_IsComplement(pObj) );
-    assert( Ivy_ObjIsPi(pObj) || Ivy_ObjIsOneFanin(pObj) || Ivy_ObjFanin1(pObj) != NULL );
-    // remove connections
-    if ( pObj->pFanin0 != NULL )
-    {
-        Ivy_ObjRefsDec(Ivy_ObjFanin0(pObj));
-        if ( p->fFanout )
-            Ivy_ObjDeleteFanout( p, Ivy_ObjFanin0(pObj), pObj );
-    }
-    if ( pObj->pFanin1 != NULL )
-    {
-        Ivy_ObjRefsDec(Ivy_ObjFanin1(pObj));
-        if ( p->fFanout )
-            Ivy_ObjDeleteFanout( p, Ivy_ObjFanin1(pObj), pObj );
-    }
-    assert( pObj->pNextFan0 == NULL );
-    assert( pObj->pNextFan1 == NULL );
-    assert( pObj->pPrevFan0 == NULL );
-    assert( pObj->pPrevFan1 == NULL );
-    // remove the node from the structural hash table
-    Ivy_TableDelete( p, pObj );
-    // add the first fanin
-    pObj->pFanin0 = NULL;
-    pObj->pFanin1 = NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Replaces the first fanin of the node by the new fanin.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjPatchFanin0( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFaninNew )
-{
-    Ivy_Obj_t * pFaninOld;
-    assert( !Ivy_IsComplement(pObj) );
-    pFaninOld = Ivy_ObjFanin0(pObj);
-    // decrement ref and remove fanout
-    Ivy_ObjRefsDec( pFaninOld );
-    if ( p->fFanout )
-        Ivy_ObjDeleteFanout( p, pFaninOld, pObj );
-    // update the fanin
-    pObj->pFanin0 = pFaninNew;
-    // increment ref and add fanout
-    Ivy_ObjRefsInc( Ivy_Regular(pFaninNew) );
-    if ( p->fFanout )
-        Ivy_ObjAddFanout( p, Ivy_Regular(pFaninNew), pObj );
-    // get rid of old fanin
-    if ( !Ivy_ObjIsPi(pFaninOld) && !Ivy_ObjIsConst1(pFaninOld) && Ivy_ObjRefs(pFaninOld) == 0 )
-        Ivy_ObjDelete_rec( p, pFaninOld, 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjDelete( Ivy_Man_t * p, Ivy_Obj_t * pObj, int fFreeTop )
-{
-    assert( !Ivy_IsComplement(pObj) );
-    assert( Ivy_ObjRefs(pObj) == 0 || !fFreeTop );
-    // update node counters of the manager
-    p->nObjs[pObj->Type]--;
-    p->nDeleted++;
-    // remove connections
-    Ivy_ObjDisconnect( p, pObj );
-    // remove PIs/POs from the arrays
-    if ( Ivy_ObjIsPi(pObj) )
-        Vec_PtrRemove( p->vPis, pObj );
-    else if ( Ivy_ObjIsPo(pObj) )
-        Vec_PtrRemove( p->vPos, pObj );
-    else if ( p->fFanout && Ivy_ObjIsBuf(pObj) )
-        Vec_PtrRemove( p->vBufs, pObj );
-    // clean and recycle the entry
-    if ( fFreeTop )
-    {
-        // free the node
-        Vec_PtrWriteEntry( p->vObjs, pObj->Id, NULL );
-        Ivy_ManRecycleMemory( p, pObj );
-    }
-    else
-    {
-        int nRefsOld = pObj->nRefs;
-        Ivy_Obj_t * pFanout = pObj->pFanout;
-        Ivy_ObjClean( pObj );
-        pObj->pFanout = pFanout;
-        pObj->nRefs = nRefsOld;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the MFFC of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjDelete_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj, int fFreeTop )
-{
-    Ivy_Obj_t * pFanin0, * pFanin1;
-    assert( !Ivy_IsComplement(pObj) );
-    assert( !Ivy_ObjIsNone(pObj) );
-    if ( Ivy_ObjIsConst1(pObj) || Ivy_ObjIsPi(pObj) )
-        return;
-    pFanin0 = Ivy_ObjFanin0(pObj);
-    pFanin1 = Ivy_ObjFanin1(pObj);
-    Ivy_ObjDelete( p, pObj, fFreeTop );
-    if ( pFanin0 && !Ivy_ObjIsNone(pFanin0) && Ivy_ObjRefs(pFanin0) == 0 )
-        Ivy_ObjDelete_rec( p, pFanin0, 1 );
-    if ( pFanin1 && !Ivy_ObjIsNone(pFanin1) && Ivy_ObjRefs(pFanin1) == 0 )
-        Ivy_ObjDelete_rec( p, pFanin1, 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Replaces one object by another.]
-
-  Description [Both objects are currently in the manager. The new object
-  (pObjNew) should be used instead of the old object (pObjOld). If the 
-  new object is complemented or used, the buffer is added.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjReplace( Ivy_Man_t * p, Ivy_Obj_t * pObjOld, Ivy_Obj_t * pObjNew, int fDeleteOld, int fFreeTop, int fUpdateLevel )
-{
-    int nRefsOld;//, clk;
-    // the object to be replaced cannot be complemented
-    assert( !Ivy_IsComplement(pObjOld) );
-    // the object to be replaced cannot be a terminal
-    assert( Ivy_ObjIsNone(pObjOld) || !Ivy_ObjIsPi(pObjOld) );
-    // the object to be used cannot be a PO or assert
-    assert( !Ivy_ObjIsBuf(Ivy_Regular(pObjNew)) );
-    // the object cannot be the same
-    assert( pObjOld != Ivy_Regular(pObjNew) );
-//printf( "Replacing %d by %d.\n", Ivy_Regular(pObjOld)->Id, Ivy_Regular(pObjNew)->Id );
-
-    // if HAIG is defined, create the choice node
-    if ( p->pHaig )
-    {
-//        if ( pObjOld->Id == 31 )
-//        {
-//            Ivy_ManShow( p, 0 );
-//            Ivy_ManShow( p->pHaig, 1 );
-//        }
-        Ivy_ManHaigCreateChoice( p, pObjOld, pObjNew );
-    }
-    // if the new object is complemented or already used, add the buffer
-    if ( Ivy_IsComplement(pObjNew) || Ivy_ObjIsLatch(pObjNew) || Ivy_ObjRefs(pObjNew) > 0 || Ivy_ObjIsPi(pObjNew) || Ivy_ObjIsConst1(pObjNew) )
-        pObjNew = Ivy_ObjCreate( p, Ivy_ObjCreateGhost(p, pObjNew, NULL, IVY_BUF, IVY_INIT_NONE) );
-    assert( !Ivy_IsComplement(pObjNew) );
-    if ( fUpdateLevel )
-    {
-//clk = clock();
-        // if the new node's arrival time is different, recursively update arrival time of the fanouts
-        if ( p->fFanout && !Ivy_ObjIsBuf(pObjNew) && pObjOld->Level != pObjNew->Level )
-        {
-            assert( Ivy_ObjIsNode(pObjOld) );
-            pObjOld->Level = pObjNew->Level;
-            Ivy_ObjUpdateLevel_rec( p, pObjOld );
-        }
-//p->time1 += clock() - clk;
-        // if the new node's required time has changed, recursively update required time of the fanins
-//clk = clock();
-        if ( p->vRequired )
-        {
-            int ReqNew = Vec_IntEntry(p->vRequired, pObjOld->Id);
-            if ( ReqNew < Vec_IntEntry(p->vRequired, pObjNew->Id) )
-            {
-                Vec_IntWriteEntry( p->vRequired, pObjNew->Id, ReqNew );
-                Ivy_ObjUpdateLevelR_rec( p, pObjNew, ReqNew );
-            }
-        }
-//p->time2 += clock() - clk;
-    }
-    // delete the old object
-    if ( fDeleteOld )
-        Ivy_ObjDelete_rec( p, pObjOld, fFreeTop );
-    // make sure object is not pointing to itself
-    assert( Ivy_ObjFanin0(pObjNew) == NULL || pObjOld != Ivy_ObjFanin0(pObjNew) );
-    assert( Ivy_ObjFanin1(pObjNew) == NULL || pObjOld != Ivy_ObjFanin1(pObjNew) );
-    // make sure the old node has no fanin fanout pointers
-    if ( p->fFanout )
-    {
-        assert( pObjOld->pFanout != NULL );
-        assert( pObjNew->pFanout == NULL );
-        pObjNew->pFanout = pObjOld->pFanout;
-    }
-    // transfer the old object
-    assert( Ivy_ObjRefs(pObjNew) == 0 );
-    nRefsOld = pObjOld->nRefs;  
-    Ivy_ObjOverwrite( pObjOld, pObjNew );
-    pObjOld->nRefs = nRefsOld;
-    // patch the fanout of the fanins 
-    if ( p->fFanout )
-    {
-        Ivy_ObjPatchFanout( p, Ivy_ObjFanin0(pObjOld), pObjNew, pObjOld );
-        if ( Ivy_ObjFanin1(pObjOld) )
-        Ivy_ObjPatchFanout( p, Ivy_ObjFanin1(pObjOld), pObjNew, pObjOld );
-    }
-    // update the hash table
-    Ivy_TableUpdate( p, pObjNew, pObjOld->Id );
-    // recycle the object that was taken over by pObjOld
-    Vec_PtrWriteEntry( p->vObjs, pObjNew->Id, NULL );
-    Ivy_ManRecycleMemory( p, pObjNew );
-    // if the new node is the buffer propagate it
-    if ( p->fFanout && Ivy_ObjIsBuf(pObjOld) )
-        Vec_PtrPush( p->vBufs, pObjOld );
-//    Ivy_ManCheckFanouts( p );
-//    printf( "\n" );
-/*
-    if ( p->pHaig )
-    {
-        int x;
-        Ivy_ManShow( p, 0, NULL );
-        Ivy_ManShow( p->pHaig, 1, NULL );
-        x = 0;
-    }
-*/
-//    if ( Ivy_ManCheckFanoutNums(p) )
-//    {
-//        int x = 0;
-//    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Fixes buffer fanins.]
-
-  Description [This situation happens because NodeReplace is a lazy
-  procedure, which does not propagate the change to the fanouts but
-  instead records the change in the form of a buf/inv node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_NodeFixBufferFanins( Ivy_Man_t * p, Ivy_Obj_t * pNode, int fUpdateLevel )
-{
-    Ivy_Obj_t * pFanReal0, * pFanReal1, * pResult;
-    if ( Ivy_ObjIsPo(pNode) )
-    {
-        if ( !Ivy_ObjIsBuf(Ivy_ObjFanin0(pNode)) )
-            return;
-        pFanReal0 = Ivy_ObjReal( Ivy_ObjChild0(pNode) );
-        Ivy_ObjPatchFanin0( p, pNode, pFanReal0 );
-//        Ivy_ManCheckFanouts( p );
-        return;
-    }
-    if ( !Ivy_ObjIsBuf(Ivy_ObjFanin0(pNode)) && !Ivy_ObjIsBuf(Ivy_ObjFanin1(pNode)) )
-        return;
-    // get the real fanins
-    pFanReal0 = Ivy_ObjReal( Ivy_ObjChild0(pNode) );
-    pFanReal1 = Ivy_ObjReal( Ivy_ObjChild1(pNode) );
-    // get the new node
-    if ( Ivy_ObjIsNode(pNode) )
-        pResult = Ivy_Oper( p, pFanReal0, pFanReal1, Ivy_ObjType(pNode) );
-    else if ( Ivy_ObjIsLatch(pNode) )
-        pResult = Ivy_Latch( p, pFanReal0, Ivy_ObjInit(pNode) );
-    else 
-        assert( 0 );
-
-//printf( "===== Replacing %d by %d.\n", pNode->Id, pResult->Id );
-//Ivy_ObjPrintVerbose( p, pNode, 0 );   printf( "\n" );
-//Ivy_ObjPrintVerbose( p, pResult, 0 ); printf( "\n" );
-
-    // perform the replacement
-    Ivy_ObjReplace( p, pNode, pResult, 1, 0, fUpdateLevel ); 
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyOper.c b/src/aig/ivy/ivyOper.c
deleted file mode 100644
index 8115ce4f..00000000
--- a/src/aig/ivy/ivyOper.c
+++ /dev/null
@@ -1,293 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyOper.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [AIG operations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyOper.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// procedure to detect an EXOR gate
-static inline int Ivy_ObjIsExorType( Ivy_Obj_t * p0, Ivy_Obj_t * p1, Ivy_Obj_t ** ppFan0, Ivy_Obj_t ** ppFan1 )
-{
-    if ( !Ivy_IsComplement(p0) || !Ivy_IsComplement(p1) )
-        return 0;
-    p0 = Ivy_Regular(p0);
-    p1 = Ivy_Regular(p1);
-    if ( !Ivy_ObjIsAnd(p0) || !Ivy_ObjIsAnd(p1) )
-        return 0;
-    if ( Ivy_ObjFanin0(p0) != Ivy_ObjFanin0(p1) || Ivy_ObjFanin1(p0) != Ivy_ObjFanin1(p1) )
-        return 0;
-    if ( Ivy_ObjFaninC0(p0) == Ivy_ObjFaninC0(p1) || Ivy_ObjFaninC1(p0) == Ivy_ObjFaninC1(p1) )
-        return 0;
-    *ppFan0 = Ivy_ObjChild0(p0);
-    *ppFan1 = Ivy_ObjChild1(p0);
-    return 1;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Perform one operation.]
-
-  Description [The argument nodes can be complemented.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Oper( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1, Ivy_Type_t Type )
-{
-    if ( Type == IVY_AND )
-        return Ivy_And( p, p0, p1 );
-    if ( Type == IVY_EXOR )
-        return Ivy_Exor( p, p0, p1 );
-    assert( 0 );
-    return NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs canonicization step.]
-
-  Description [The argument nodes can be complemented.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_And( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 )
-{
-//    Ivy_Obj_t * pFan0, * pFan1;
-    // check trivial cases
-    if ( p0 == p1 )
-        return p0;
-    if ( p0 == Ivy_Not(p1) )
-        return Ivy_Not(p->pConst1);
-    if ( Ivy_Regular(p0) == p->pConst1 )
-        return p0 == p->pConst1 ? p1 : Ivy_Not(p->pConst1);
-    if ( Ivy_Regular(p1) == p->pConst1 )
-        return p1 == p->pConst1 ? p0 : Ivy_Not(p->pConst1);
-    // check if it can be an EXOR gate
-//    if ( Ivy_ObjIsExorType( p0, p1, &pFan0, &pFan1 ) )
-//        return Ivy_CanonExor( pFan0, pFan1 );
-    return Ivy_CanonAnd( p, p0, p1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs canonicization step.]
-
-  Description [The argument nodes can be complemented.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Exor( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 )
-{
-/*
-    // check trivial cases
-    if ( p0 == p1 )
-        return Ivy_Not(p->pConst1);
-    if ( p0 == Ivy_Not(p1) )
-        return p->pConst1;
-    if ( Ivy_Regular(p0) == p->pConst1 )
-        return Ivy_NotCond( p1, p0 == p->pConst1 );
-    if ( Ivy_Regular(p1) == p->pConst1 )
-        return Ivy_NotCond( p0, p1 == p->pConst1 );
-    // check the table
-    return Ivy_CanonExor( p, p0, p1 );
-*/
-    return Ivy_Or( p, Ivy_And(p, p0, Ivy_Not(p1)), Ivy_And(p, Ivy_Not(p0), p1) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements Boolean OR.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Or( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 )
-{
-    return Ivy_Not( Ivy_And( p, Ivy_Not(p0), Ivy_Not(p1) ) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements ITE operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Mux( Ivy_Man_t * p, Ivy_Obj_t * pC, Ivy_Obj_t * p1, Ivy_Obj_t * p0 )
-{
-    Ivy_Obj_t * pTempA1, * pTempA2, * pTempB1, * pTempB2, * pTemp;
-    int Count0, Count1;
-    // consider trivial cases
-    if ( p0 == Ivy_Not(p1) )
-        return Ivy_Exor( p, pC, p0 );
-    // other cases can be added
-    // implement the first MUX (F = C * x1 + C' * x0)
-    pTempA1 = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, pC,          p1, IVY_AND, IVY_INIT_NONE) );
-    pTempA2 = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, Ivy_Not(pC), p0, IVY_AND, IVY_INIT_NONE) );
-    if ( pTempA1 && pTempA2 )
-    {
-        pTemp = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, Ivy_Not(pTempA1), Ivy_Not(pTempA2), IVY_AND, IVY_INIT_NONE) );
-        if ( pTemp ) return Ivy_Not(pTemp);
-    }
-    Count0 = (pTempA1 != NULL) + (pTempA2 != NULL);
-    // implement the second MUX (F' = C * x1' + C' * x0')
-    pTempB1 = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, pC,          Ivy_Not(p1), IVY_AND, IVY_INIT_NONE) );
-    pTempB2 = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, Ivy_Not(pC), Ivy_Not(p0), IVY_AND, IVY_INIT_NONE) );
-    if ( pTempB1 && pTempB2 )
-    {
-        pTemp = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, Ivy_Not(pTempB1), Ivy_Not(pTempB2), IVY_AND, IVY_INIT_NONE) );
-        if ( pTemp ) return pTemp;
-    }
-    Count1 = (pTempB1 != NULL) + (pTempB2 != NULL);
-    // compare and decide which one to implement
-    if ( Count0 >= Count1 )
-    {
-        pTempA1 = pTempA1? pTempA1 : Ivy_And(p, pC,          p1);
-        pTempA2 = pTempA2? pTempA2 : Ivy_And(p, Ivy_Not(pC), p0);
-        return Ivy_Or( p, pTempA1, pTempA2 );
-    }
-    pTempB1 = pTempB1? pTempB1 : Ivy_And(p, pC,          Ivy_Not(p1));
-    pTempB2 = pTempB2? pTempB2 : Ivy_And(p, Ivy_Not(pC), Ivy_Not(p0));
-    return Ivy_Not( Ivy_Or( p, pTempB1, pTempB2 ) );
-
-//    return Ivy_Or( Ivy_And(pC, p1), Ivy_And(Ivy_Not(pC), p0) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements ITE operation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Maj( Ivy_Man_t * p, Ivy_Obj_t * pA, Ivy_Obj_t * pB, Ivy_Obj_t * pC )
-{
-    return Ivy_Or( p, Ivy_Or(p, Ivy_And(p, pA, pB), Ivy_And(p, pA, pC)), Ivy_And(p, pB, pC) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Constructs the well-balanced tree of gates.]
-
-  Description [Disregards levels and possible logic sharing.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Multi_rec( Ivy_Man_t * p, Ivy_Obj_t ** ppObjs, int nObjs, Ivy_Type_t Type )
-{
-    Ivy_Obj_t * pObj1, * pObj2;
-    if ( nObjs == 1 )
-        return ppObjs[0];
-    pObj1 = Ivy_Multi_rec( p, ppObjs,           nObjs/2,         Type );
-    pObj2 = Ivy_Multi_rec( p, ppObjs + nObjs/2, nObjs - nObjs/2, Type );
-    return Ivy_Oper( p, pObj1, pObj2, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Old code.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Multi( Ivy_Man_t * p, Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type )
-{
-    assert( Type == IVY_AND || Type == IVY_EXOR );
-    assert( nArgs > 0 );
-    return Ivy_Multi_rec( p, pArgs, nArgs, Type );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Implements the miter.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Miter( Ivy_Man_t * p, Vec_Ptr_t * vPairs )
-{
-    int i;
-    assert( vPairs->nSize > 0 );
-    assert( vPairs->nSize % 2 == 0 );
-    // go through the cubes of the node's SOP
-    for ( i = 0; i < vPairs->nSize; i += 2 )
-        vPairs->pArray[i/2] = Ivy_Not( Ivy_Exor( p, vPairs->pArray[i], vPairs->pArray[i+1] ) );
-    vPairs->nSize = vPairs->nSize/2;
-    return Ivy_Not( Ivy_Multi_rec( p, (Ivy_Obj_t **)vPairs->pArray, vPairs->nSize, IVY_AND ) );
-}
- 
-/**Function*************************************************************
-
-  Synopsis    [Performs canonicization step.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_Latch( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Init_t Init )
-{
-    return Ivy_CanonLatch( p, pObj, Init );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyResyn.c b/src/aig/ivy/ivyResyn.c
deleted file mode 100644
index f42d7464..00000000
--- a/src/aig/ivy/ivyResyn.c
+++ /dev/null
@@ -1,196 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyResyn.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [AIG rewriting script.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyResyn.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Performs several passes of rewriting on the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_ManResyn0( Ivy_Man_t * pMan, int fUpdateLevel, int fVerbose )
-{
-    int clk;
-    Ivy_Man_t * pTemp;
-
-if ( fVerbose ) { printf( "Original:\n" ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-clk = clock();
-    pMan = Ivy_ManBalance( pMan, fUpdateLevel );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Balance", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-//    Ivy_ManRewriteAlg( pMan, fUpdateLevel, 0 );
-clk = clock();
-    Ivy_ManRewritePre( pMan, fUpdateLevel, 0, 0 );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Rewrite", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-clk = clock();
-    pMan = Ivy_ManBalance( pTemp = pMan, fUpdateLevel );
-    Ivy_ManStop( pTemp );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Balance", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-    return pMan;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs several passes of rewriting on the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_ManResyn( Ivy_Man_t * pMan, int fUpdateLevel, int fVerbose )
-{
-    int clk;
-    Ivy_Man_t * pTemp;
-
-if ( fVerbose ) { printf( "Original:\n" ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-clk = clock();
-    pMan = Ivy_ManBalance( pMan, fUpdateLevel );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Balance", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-//    Ivy_ManRewriteAlg( pMan, fUpdateLevel, 0 );
-clk = clock();
-    Ivy_ManRewritePre( pMan, fUpdateLevel, 0, 0 );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Rewrite", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-clk = clock();
-    pMan = Ivy_ManBalance( pTemp = pMan, fUpdateLevel );
-    Ivy_ManStop( pTemp );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Balance", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-//    Ivy_ManRewriteAlg( pMan, fUpdateLevel, 1 );
-clk = clock();
-    Ivy_ManRewritePre( pMan, fUpdateLevel, 1, 0 );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Rewrite", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-clk = clock();
-    pMan = Ivy_ManBalance( pTemp = pMan, fUpdateLevel );
-    Ivy_ManStop( pTemp );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Balance", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-//    Ivy_ManRewriteAlg( pMan, fUpdateLevel, 1 );
-clk = clock();
-    Ivy_ManRewritePre( pMan, fUpdateLevel, 1, 0 );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Rewrite", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-clk = clock();
-    pMan = Ivy_ManBalance( pTemp = pMan, fUpdateLevel );
-    Ivy_ManStop( pTemp );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Balance", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-    return pMan;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs several passes of rewriting on the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Man_t * Ivy_ManRwsat( Ivy_Man_t * pMan, int fVerbose )
-{
-    int clk;
-    Ivy_Man_t * pTemp;
-
-if ( fVerbose ) { printf( "Original:\n" ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-clk = clock();
-    Ivy_ManRewritePre( pMan, 0, 0, 0 );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Rewrite", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-clk = clock();
-    pMan = Ivy_ManBalance( pTemp = pMan, 0 );
-//    pMan = Ivy_ManDup( pTemp = pMan );
-    Ivy_ManStop( pTemp );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Balance", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-/*
-clk = clock();
-    Ivy_ManRewritePre( pMan, 0, 0, 0 );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Rewrite", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-
-clk = clock();
-    pMan = Ivy_ManBalance( pTemp = pMan, 0 );
-    Ivy_ManStop( pTemp );
-if ( fVerbose ) { printf( "\n" ); }
-if ( fVerbose ) { PRT( "Balance", clock() - clk ); }
-if ( fVerbose ) Ivy_ManPrintStats( pMan );
-*/
-    return pMan;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyRwr.c b/src/aig/ivy/ivyRwr.c
deleted file mode 100644
index 3f8720ba..00000000
--- a/src/aig/ivy/ivyRwr.c
+++ /dev/null
@@ -1,609 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyRwt.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Rewriting based on precomputation.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyRwt.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-#include "deco.h"
-#include "rwt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static unsigned Ivy_NodeGetTruth( Ivy_Obj_t * pObj, int * pNums, int nNums );
-static int Ivy_NodeRewrite( Ivy_Man_t * pMan, Rwt_Man_t * p, Ivy_Obj_t * pNode, int fUpdateLevel, int fUseZeroCost );
-static Dec_Graph_t * Rwt_CutEvaluate( Ivy_Man_t * pMan, Rwt_Man_t * p, Ivy_Obj_t * pRoot, 
-    Vec_Ptr_t * vFaninsCur, int nNodesSaved, int LevelMax, int * pGainBest, unsigned uTruth );
-
-static int Ivy_GraphToNetworkCount( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Dec_Graph_t * pGraph, int NodeMax, int LevelMax );
-static void Ivy_GraphUpdateNetwork( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Dec_Graph_t * pGraph, int fUpdateLevel, int nGain );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Performs incremental rewriting of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManRewritePre( Ivy_Man_t * p, int fUpdateLevel, int fUseZeroCost, int fVerbose )
-{
-    Rwt_Man_t * pManRwt;
-    Ivy_Obj_t * pNode;
-    int i, nNodes, nGain;
-    int clk, clkStart = clock();
-    // start the rewriting manager
-    pManRwt = Rwt_ManStart( 0 );
-    p->pData = pManRwt;
-    if ( pManRwt == NULL )
-        return 0; 
-    // create fanouts
-    if ( fUpdateLevel && p->fFanout == 0 )
-        Ivy_ManStartFanout( p );
-    // compute the reverse levels if level update is requested
-    if ( fUpdateLevel )
-        Ivy_ManRequiredLevels( p );
-    // set the number of levels
-//    p->nLevelMax = Ivy_ManLevels( p );
-    // resynthesize each node once
-    nNodes = Ivy_ManObjIdMax(p);
-    Ivy_ManForEachNode( p, pNode, i )
-    {
-        // fix the fanin buffer problem
-        Ivy_NodeFixBufferFanins( p, pNode, 1 );
-        if ( Ivy_ObjIsBuf(pNode) )
-            continue;
-        // stop if all nodes have been tried once
-        if ( i > nNodes )
-            break;
-        // for each cut, try to resynthesize it
-        nGain = Ivy_NodeRewrite( p, pManRwt, pNode, fUpdateLevel, fUseZeroCost );
-        if ( nGain > 0 || nGain == 0 && fUseZeroCost )
-        {
-            Dec_Graph_t * pGraph = Rwt_ManReadDecs(pManRwt);
-            int fCompl           = Rwt_ManReadCompl(pManRwt);
-/*
-            {
-                Ivy_Obj_t * pObj;
-                int i;
-                printf( "USING: (" );
-                Vec_PtrForEachEntry( Rwt_ManReadLeaves(pManRwt), pObj, i )
-                    printf( "%d ", Ivy_ObjFanoutNum(Ivy_Regular(pObj)) );
-                printf( ")   Gain = %d.\n", nGain );
-            }
-            if ( nGain > 0 )
-            { // print stats on the MFFC
-                extern void Ivy_NodeMffsConeSuppPrint( Ivy_Obj_t * pNode );
-                printf( "Node %6d : Gain = %4d  ", pNode->Id, nGain );
-                Ivy_NodeMffsConeSuppPrint( pNode );
-            }
-*/
-            // complement the FF if needed
-clk = clock();
-            if ( fCompl ) Dec_GraphComplement( pGraph );
-            Ivy_GraphUpdateNetwork( p, pNode, pGraph, fUpdateLevel, nGain );
-            if ( fCompl ) Dec_GraphComplement( pGraph );
-Rwt_ManAddTimeUpdate( pManRwt, clock() - clk );
-        }
-    }
-Rwt_ManAddTimeTotal( pManRwt, clock() - clkStart );
-    // print stats
-    if ( fVerbose )
-        Rwt_ManPrintStats( pManRwt );
-    // delete the managers
-    Rwt_ManStop( pManRwt );
-    p->pData = NULL;
-    // fix the levels
-    if ( fUpdateLevel )
-        Vec_IntFree( p->vRequired ), p->vRequired = NULL;
-    else
-        Ivy_ManResetLevels( p );
-    // check
-    if ( i = Ivy_ManCleanup(p) )
-        printf( "Cleanup after rewriting removed %d dangling nodes.\n", i );
-    if ( !Ivy_ManCheck(p) )
-        printf( "Ivy_ManRewritePre(): The check has failed.\n" );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs rewriting for one node.]
-
-  Description [This procedure considers all the cuts computed for the node
-  and tries to rewrite each of them using the "forest" of different AIG
-  structures precomputed and stored in the RWR manager. 
-  Determines the best rewriting and computes the gain in the number of AIG
-  nodes in the final network. In the end, p->vFanins contains information 
-  about the best cut that can be used for rewriting, while p->pGraph gives 
-  the decomposition dag (represented using decomposition graph data structure).
-  Returns gain in the number of nodes or -1 if node cannot be rewritten.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeRewrite( Ivy_Man_t * pMan, Rwt_Man_t * p, Ivy_Obj_t * pNode, int fUpdateLevel, int fUseZeroCost )
-{
-    int fVeryVerbose = 0;
-    Dec_Graph_t * pGraph;
-    Ivy_Store_t * pStore;
-    Ivy_Cut_t * pCut;
-    Ivy_Obj_t * pFanin;
-    unsigned uPhase, uTruthBest, uTruth;
-    char * pPerm;
-    int Required, nNodesSaved, nNodesSaveCur;
-    int i, c, GainCur, GainBest = -1;
-    int clk, clk2;
-
-    p->nNodesConsidered++;
-    // get the required times
-    Required = fUpdateLevel? Vec_IntEntry( pMan->vRequired, pNode->Id ) : 1000000;
-    // get the node's cuts
-clk = clock();
-    pStore = Ivy_NodeFindCutsAll( pMan, pNode, 5 );
-p->timeCut += clock() - clk;
-
-    // go through the cuts
-clk = clock();
-    for ( c = 1; c < pStore->nCuts; c++ )
-    {
-        pCut = pStore->pCuts + c;
-        // consider only 4-input cuts
-        if ( pCut->nSize != 4 )
-            continue;
-        // skip the cuts with buffers
-        for ( i = 0; i < (int)pCut->nSize; i++ )
-            if ( Ivy_ObjIsBuf( Ivy_ManObj(pMan, pCut->pArray[i]) ) )
-                break;
-        if ( i != pCut->nSize )
-        {
-            p->nCutsBad++;
-            continue;
-        }
-        p->nCutsGood++;
-        // get the fanin permutation
-clk2 = clock();
-        uTruth = 0xFFFF & Ivy_NodeGetTruth( pNode, pCut->pArray, pCut->nSize );  // truth table
-p->timeTruth += clock() - clk2;
-        pPerm = p->pPerms4[ p->pPerms[uTruth] ];
-        uPhase = p->pPhases[uTruth];
-        // collect fanins with the corresponding permutation/phase
-        Vec_PtrClear( p->vFaninsCur );
-        Vec_PtrFill( p->vFaninsCur, (int)pCut->nSize, 0 );
-        for ( i = 0; i < (int)pCut->nSize; i++ )
-        {
-            pFanin = Ivy_ManObj( pMan, pCut->pArray[pPerm[i]] );
-            assert( Ivy_ObjIsNode(pFanin) || Ivy_ObjIsCi(pFanin) );
-            pFanin = Ivy_NotCond(pFanin, ((uPhase & (1<<i)) > 0) );
-            Vec_PtrWriteEntry( p->vFaninsCur, i, pFanin );
-        }
-clk2 = clock();
-/*
-        printf( "Considering: (" );
-        Vec_PtrForEachEntry( p->vFaninsCur, pFanin, i )
-            printf( "%d ", Ivy_ObjFanoutNum(Ivy_Regular(pFanin)) );
-        printf( ")\n" );
-*/
-        // mark the fanin boundary 
-        Vec_PtrForEachEntry( p->vFaninsCur, pFanin, i )
-            Ivy_ObjRefsInc( Ivy_Regular(pFanin) );
-        // label MFFC with current ID
-        Ivy_ManIncrementTravId( pMan );
-        nNodesSaved = Ivy_ObjMffcLabel( pMan, pNode );
-        // unmark the fanin boundary
-        Vec_PtrForEachEntry( p->vFaninsCur, pFanin, i )
-            Ivy_ObjRefsDec( Ivy_Regular(pFanin) );
-p->timeMffc += clock() - clk2;
-
-        // evaluate the cut
-clk2 = clock();
-        pGraph = Rwt_CutEvaluate( pMan, p, pNode, p->vFaninsCur, nNodesSaved, Required, &GainCur, uTruth );
-p->timeEval += clock() - clk2;
-
-        // check if the cut is better than the current best one
-        if ( pGraph != NULL && GainBest < GainCur )
-        {
-            // save this form
-            nNodesSaveCur = nNodesSaved;
-            GainBest  = GainCur;
-            p->pGraph  = pGraph;
-            p->fCompl = ((uPhase & (1<<4)) > 0);
-            uTruthBest = uTruth;
-            // collect fanins in the
-            Vec_PtrClear( p->vFanins );
-            Vec_PtrForEachEntry( p->vFaninsCur, pFanin, i )
-                Vec_PtrPush( p->vFanins, pFanin );
-        }
-    }
-p->timeRes += clock() - clk;
-
-    if ( GainBest == -1 )
-        return -1;
-
-//    printf( "%d", nNodesSaveCur - GainBest );
-/*
-    if ( GainBest > 0 )
-    {
-        if ( Rwt_CutIsintean( pNode, p->vFanins ) )
-            printf( "b" );
-        else
-        {
-            printf( "Node %d : ", pNode->Id );
-            Vec_PtrForEachEntry( p->vFanins, pFanin, i )
-                printf( "%d ", Ivy_Regular(pFanin)->Id );
-            printf( "a" );
-        }
-    }
-*/
-/*
-    if ( GainBest > 0 )
-        if ( p->fCompl )
-            printf( "c" );
-        else
-            printf( "." );
-*/
-
-    // copy the leaves
-    Vec_PtrForEachEntry( p->vFanins, pFanin, i )
-        Dec_GraphNode(p->pGraph, i)->pFunc = pFanin;
-
-    p->nScores[p->pMap[uTruthBest]]++;
-    p->nNodesGained += GainBest;
-    if ( fUseZeroCost || GainBest > 0 )
-        p->nNodesRewritten++;
-
-    // report the progress
-    if ( fVeryVerbose && GainBest > 0 )
-    {
-        printf( "Node %6d :   ", Ivy_ObjId(pNode) );
-        printf( "Fanins = %d. ", p->vFanins->nSize );
-        printf( "Save = %d.  ", nNodesSaveCur );
-        printf( "Add = %d.  ",  nNodesSaveCur-GainBest );
-        printf( "GAIN = %d.  ", GainBest );
-        printf( "Cone = %d.  ", p->pGraph? Dec_GraphNodeNum(p->pGraph) : 0 );
-        printf( "Class = %d.  ", p->pMap[uTruthBest] );
-        printf( "\n" );
-    }
-    return GainBest;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Ivy_NodeGetTruth_rec( Ivy_Obj_t * pObj, int * pNums, int nNums )
-{
-    static unsigned uMasks[5] = { 0xAAAAAAAA, 0xCCCCCCCC, 0xF0F0F0F0, 0xFF00FF00, 0xFFFF0000 };
-    unsigned uTruth0, uTruth1;
-    int i;
-    for ( i = 0; i < nNums; i++ )
-        if ( pObj->Id == pNums[i] )
-            return uMasks[i];
-    assert( Ivy_ObjIsNode(pObj) || Ivy_ObjIsBuf(pObj) );
-    uTruth0 = Ivy_NodeGetTruth_rec( Ivy_ObjFanin0(pObj), pNums, nNums );
-    if ( Ivy_ObjFaninC0(pObj) )
-        uTruth0 = ~uTruth0;
-    if ( Ivy_ObjIsBuf(pObj) )
-        return uTruth0;
-    uTruth1 = Ivy_NodeGetTruth_rec( Ivy_ObjFanin1(pObj), pNums, nNums );
-    if ( Ivy_ObjFaninC1(pObj) )
-        uTruth1 = ~uTruth1;
-    return uTruth0 & uTruth1;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Ivy_NodeGetTruth( Ivy_Obj_t * pObj, int * pNums, int nNums )
-{
-    assert( nNums < 6 );
-    return Ivy_NodeGetTruth_rec( pObj, pNums, nNums );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Evaluates the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dec_Graph_t * Rwt_CutEvaluate( Ivy_Man_t * pMan, Rwt_Man_t * p, Ivy_Obj_t * pRoot, Vec_Ptr_t * vFaninsCur, int nNodesSaved, int LevelMax, int * pGainBest, unsigned uTruth )
-{
-    Vec_Ptr_t * vSubgraphs;
-    Dec_Graph_t * pGraphBest, * pGraphCur;
-    Rwt_Node_t * pNode, * pFanin;
-    int nNodesAdded, GainBest, i, k;
-    // find the matching class of subgraphs
-    vSubgraphs = Vec_VecEntry( p->vClasses, p->pMap[uTruth] );
-    p->nSubgraphs += vSubgraphs->nSize;
-    // determine the best subgraph
-    GainBest = -1;
-    Vec_PtrForEachEntry( vSubgraphs, pNode, i )
-    {
-        // get the current graph
-        pGraphCur = (Dec_Graph_t *)pNode->pNext;
-        // copy the leaves
-        Vec_PtrForEachEntry( vFaninsCur, pFanin, k )
-            Dec_GraphNode(pGraphCur, k)->pFunc = pFanin;
-        // detect how many unlabeled nodes will be reused
-        nNodesAdded = Ivy_GraphToNetworkCount( pMan, pRoot, pGraphCur, nNodesSaved, LevelMax );
-        if ( nNodesAdded == -1 )
-            continue;
-        assert( nNodesSaved >= nNodesAdded );
-        // count the gain at this node
-        if ( GainBest < nNodesSaved - nNodesAdded )
-        {
-            GainBest   = nNodesSaved - nNodesAdded;
-            pGraphBest = pGraphCur;
-        }
-    }
-    if ( GainBest == -1 )
-        return NULL;
-    *pGainBest = GainBest;
-    return pGraphBest;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of new nodes added when using this graph.]
-
-  Description [AIG nodes for the fanins should be assigned to pNode->pFunc 
-  of the leaves of the graph before calling this procedure. 
-  Returns -1 if the number of nodes and levels exceeded the given limit or 
-  the number of levels exceeded the maximum allowed level.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_GraphToNetworkCount( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Dec_Graph_t * pGraph, int NodeMax, int LevelMax )
-{
-    Dec_Node_t * pNode, * pNode0, * pNode1;
-    Ivy_Obj_t * pAnd, * pAnd0, * pAnd1;
-    int i, Counter, LevelNew, LevelOld;
-    // check for constant function or a literal
-    if ( Dec_GraphIsConst(pGraph) || Dec_GraphIsVar(pGraph) )
-        return 0;
-    // set the levels of the leaves
-    Dec_GraphForEachLeaf( pGraph, pNode, i )
-        pNode->Level = Ivy_Regular(pNode->pFunc)->Level;
-    // compute the AIG size after adding the internal nodes
-    Counter = 0;
-    Dec_GraphForEachNode( pGraph, pNode, i )
-    {
-        // get the children of this node
-        pNode0 = Dec_GraphNode( pGraph, pNode->eEdge0.Node );
-        pNode1 = Dec_GraphNode( pGraph, pNode->eEdge1.Node );
-        // get the AIG nodes corresponding to the children 
-        pAnd0 = pNode0->pFunc; 
-        pAnd1 = pNode1->pFunc; 
-        if ( pAnd0 && pAnd1 )
-        {
-            // if they are both present, find the resulting node
-            pAnd0 = Ivy_NotCond( pAnd0, pNode->eEdge0.fCompl );
-            pAnd1 = Ivy_NotCond( pAnd1, pNode->eEdge1.fCompl );
-            pAnd  = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, pAnd0, pAnd1, IVY_AND, IVY_INIT_NONE) );
-            // return -1 if the node is the same as the original root
-            if ( Ivy_Regular(pAnd) == pRoot )
-                return -1;
-        }
-        else
-            pAnd = NULL;
-        // count the number of added nodes
-        if ( pAnd == NULL || Ivy_ObjIsTravIdCurrent(p, Ivy_Regular(pAnd)) )
-        {
-            if ( ++Counter > NodeMax )
-                return -1;
-        }
-        // count the number of new levels
-        LevelNew = 1 + RWT_MAX( pNode0->Level, pNode1->Level );
-        if ( pAnd )
-        {
-            if ( Ivy_Regular(pAnd) == p->pConst1 )
-                LevelNew = 0;
-            else if ( Ivy_Regular(pAnd) == Ivy_Regular(pAnd0) )
-                LevelNew = (int)Ivy_Regular(pAnd0)->Level;
-            else if ( Ivy_Regular(pAnd) == Ivy_Regular(pAnd1) )
-                LevelNew = (int)Ivy_Regular(pAnd1)->Level;
-            LevelOld = (int)Ivy_Regular(pAnd)->Level;
-//            assert( LevelNew == LevelOld );
-        }
-        if ( LevelNew > LevelMax )
-            return -1;
-        pNode->pFunc = pAnd;
-        pNode->Level = LevelNew;
-    }
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Transforms the decomposition graph into the AIG.]
-
-  Description [AIG nodes for the fanins should be assigned to pNode->pFunc
-  of the leaves of the graph before calling this procedure.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_GraphToNetwork( Ivy_Man_t * p, Dec_Graph_t * pGraph )
-{
-    Ivy_Obj_t * pAnd0, * pAnd1;
-    Dec_Node_t * pNode;
-    int i;
-    // check for constant function
-    if ( Dec_GraphIsConst(pGraph) )
-        return Ivy_NotCond( Ivy_ManConst1(p), Dec_GraphIsComplement(pGraph) );
-    // check for a literal
-    if ( Dec_GraphIsVar(pGraph) )
-        return Ivy_NotCond( Dec_GraphVar(pGraph)->pFunc, Dec_GraphIsComplement(pGraph) );
-    // build the AIG nodes corresponding to the AND gates of the graph
-    Dec_GraphForEachNode( pGraph, pNode, i )
-    {
-        pAnd0 = Ivy_NotCond( Dec_GraphNode(pGraph, pNode->eEdge0.Node)->pFunc, pNode->eEdge0.fCompl ); 
-        pAnd1 = Ivy_NotCond( Dec_GraphNode(pGraph, pNode->eEdge1.Node)->pFunc, pNode->eEdge1.fCompl ); 
-        pNode->pFunc = Ivy_And( p, pAnd0, pAnd1 );
-    }
-    // complement the result if necessary
-    return Ivy_NotCond( pNode->pFunc, Dec_GraphIsComplement(pGraph) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Replaces MFFC of the node by the new factored form.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_GraphUpdateNetwork( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Dec_Graph_t * pGraph, int fUpdateLevel, int nGain )
-{
-    Ivy_Obj_t * pRootNew;
-    int nNodesNew, nNodesOld, Required;
-    Required = fUpdateLevel? Vec_IntEntry( p->vRequired, pRoot->Id ) : 1000000;
-    nNodesOld = Ivy_ManNodeNum(p);
-    // create the new structure of nodes
-    pRootNew = Ivy_GraphToNetwork( p, pGraph );
-    assert( (int)Ivy_Regular(pRootNew)->Level <= Required );
-//    if ( Ivy_Regular(pRootNew)->Level == Required )
-//        printf( "Difference %d.\n", Ivy_Regular(pRootNew)->Level - Required );
-    // remove the old nodes
-//    Ivy_AigReplace( pMan->pManFunc, pRoot, pRootNew, fUpdateLevel );
-/*
-    if ( Ivy_IsComplement(pRootNew) )
-        printf( "c" );
-    else
-        printf( "d" );
-    if ( Ivy_ObjRefs(Ivy_Regular(pRootNew)) > 0 )
-        printf( "%d", Ivy_ObjRefs(Ivy_Regular(pRootNew)) );
-    printf( " " );
-*/
-    Ivy_ObjReplace( p, pRoot, pRootNew, 1, 0, 1 );
-    // compare the gains
-    nNodesNew = Ivy_ManNodeNum(p);
-    assert( nGain <= nNodesOld - nNodesNew );
-    // propagate the buffer
-    Ivy_ManPropagateBuffers( p, 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Replaces MFFC of the node by the new factored form.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_GraphUpdateNetwork3( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Dec_Graph_t * pGraph, int fUpdateLevel, int nGain )
-{
-    Ivy_Obj_t * pRootNew, * pFanin;
-    int nNodesNew, nNodesOld, i, nRefsOld;
-    nNodesOld = Ivy_ManNodeNum(p);
-
-//printf( "Before = %d. ", Ivy_ManNodeNum(p) );
-    // mark the cut
-    Vec_PtrForEachEntry( ((Rwt_Man_t *)p->pData)->vFanins, pFanin, i )
-        Ivy_ObjRefsInc( Ivy_Regular(pFanin) );
-    // deref the old cone
-    nRefsOld = pRoot->nRefs;  
-    pRoot->nRefs = 0;
-    Ivy_ObjDelete_rec( p, pRoot, 0 );
-    pRoot->nRefs = nRefsOld;
-    // unmark the cut
-    Vec_PtrForEachEntry( ((Rwt_Man_t *)p->pData)->vFanins, pFanin, i )
-        Ivy_ObjRefsDec( Ivy_Regular(pFanin) );
-//printf( "Deref = %d. ", Ivy_ManNodeNum(p) );
- 
-    // create the new structure of nodes
-    pRootNew = Ivy_GraphToNetwork( p, pGraph );
-//printf( "Create = %d. ", Ivy_ManNodeNum(p) );
-    // remove the old nodes
-//    Ivy_AigReplace( pMan->pManFunc, pRoot, pRootNew, fUpdateLevel );
-/*
-    if ( Ivy_IsComplement(pRootNew) )
-        printf( "c" );
-    else
-        printf( "d" );
-    if ( Ivy_ObjRefs(Ivy_Regular(pRootNew)) > 0 )
-        printf( "%d", Ivy_ObjRefs(Ivy_Regular(pRootNew)) );
-    printf( " " );
-*/
-    Ivy_ObjReplace( p, pRoot, pRootNew, 0, 0, 1 );
-//printf( "Replace = %d. ", Ivy_ManNodeNum(p) );
-
-    // delete remaining dangling nodes
-    Vec_PtrForEachEntry( ((Rwt_Man_t *)p->pData)->vFanins, pFanin, i )
-    {
-        pFanin = Ivy_Regular(pFanin);
-        if ( !Ivy_ObjIsNone(pFanin) && Ivy_ObjRefs(pFanin) == 0 )
-            Ivy_ObjDelete_rec( p, pFanin, 1 );
-    }
-//printf( "Deref = %d. ", Ivy_ManNodeNum(p) );
-//printf( "\n" );
-
-    // compare the gains
-    nNodesNew = Ivy_ManNodeNum(p);
-    assert( nGain <= nNodesOld - nNodesNew );
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyRwrAlg.c b/src/aig/ivy/ivyRwrAlg.c
deleted file mode 100644
index fc48deb0..00000000
--- a/src/aig/ivy/ivyRwrAlg.c
+++ /dev/null
@@ -1,408 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyRwrAlg.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Algebraic AIG rewriting.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyRwrAlg.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static int Ivy_ManFindAlgCut( Ivy_Obj_t * pRoot, Vec_Ptr_t * vFront, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vCone );
-static Ivy_Obj_t * Ivy_NodeRewriteAlg( Ivy_Obj_t * pObj, Vec_Ptr_t * vFront, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vCone, Vec_Ptr_t * vSols, int LevelR, int fUseZeroCost );
-static int Ivy_NodeCountMffc( Ivy_Obj_t * pNode );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Algebraic AIG rewriting.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManRewriteAlg( Ivy_Man_t * p, int fUpdateLevel, int fUseZeroCost )
-{
-    Vec_Int_t * vRequired;
-    Vec_Ptr_t * vFront, * vLeaves, * vCone, * vSol;
-    Ivy_Obj_t * pObj, * pResult;
-    int i, RetValue, LevelR, nNodesOld;
-    int CountUsed, CountUndo;
-    vRequired = fUpdateLevel? Ivy_ManRequiredLevels( p ) : NULL;
-    vFront    = Vec_PtrAlloc( 100 );
-    vLeaves   = Vec_PtrAlloc( 100 );
-    vCone     = Vec_PtrAlloc( 100 );
-    vSol      = Vec_PtrAlloc( 100 );
-    // go through the nodes in the topological order
-    CountUsed = CountUndo = 0;
-    nNodesOld = Ivy_ManObjIdNext(p);
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        assert( !Ivy_ObjIsBuf(pObj) );
-        if ( i >= nNodesOld )
-            break;
-        // skip no-nodes and MUX roots
-        if ( !Ivy_ObjIsNode(pObj) || Ivy_ObjIsExor(pObj) || Ivy_ObjIsMuxType(pObj) )
-            continue;
-//        if ( pObj->Id > 297 ) // 296 --- 297 
-//            break;
-        if ( pObj->Id == 297 )
-        {
-            int x = 0;
-        }
-        // get the largest algebraic cut
-        RetValue = Ivy_ManFindAlgCut( pObj, vFront, vLeaves, vCone );
-        // the case of a trivial tree cut
-        if ( RetValue == 1 )
-            continue;
-        // the case of constant 0 cone
-        if ( RetValue == -1 )
-        {
-            Ivy_ObjReplace( pObj, Ivy_ManConst0(p), 1, 0, 1 ); 
-            continue;
-        }
-        assert( Vec_PtrSize(vLeaves) > 2 );
-        // get the required level for this node
-        LevelR = vRequired? Vec_IntEntry(vRequired, pObj->Id) : 1000000;
-        // create a new cone
-        pResult = Ivy_NodeRewriteAlg( pObj, vFront, vLeaves, vCone, vSol, LevelR, fUseZeroCost );
-        if ( pResult == NULL || pResult == pObj )
-            continue;
-        assert( Vec_PtrSize(vSol) == 1 || !Ivy_IsComplement(pResult) );
-        if ( Ivy_ObjLevel(Ivy_Regular(pResult)) > LevelR && Ivy_ObjRefs(Ivy_Regular(pResult)) == 0 )
-            Ivy_ObjDelete_rec(Ivy_Regular(pResult), 1), CountUndo++;
-        else
-            Ivy_ObjReplace( pObj, pResult, 1, 0, 1 ), CountUsed++; 
-    }
-    printf( "Used = %d. Undo = %d.\n", CountUsed, CountUndo );
-    Vec_PtrFree( vFront );
-    Vec_PtrFree( vCone );
-    Vec_PtrFree( vSol );
-    if ( vRequired ) Vec_IntFree( vRequired );
-    if ( i = Ivy_ManCleanup(p) )
-        printf( "Cleanup after rewriting removed %d dangling nodes.\n", i );
-    if ( !Ivy_ManCheck(p) )
-        printf( "Ivy_ManRewriteAlg(): The check has failed.\n" );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Analizes one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_NodeRewriteAlg( Ivy_Obj_t * pObj, Vec_Ptr_t * vFront, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vCone, Vec_Ptr_t * vSols, int LevelR, int fUseZeroCost )
-{
-    int fVerbose = 0;
-    Ivy_Obj_t * pTemp;
-    int k, Counter, nMffc, RetValue;
-
-    if ( fVerbose )
-    {
-        if ( Ivy_ObjIsExor(pObj) )
-            printf( "x " );
-        else
-            printf( "  " );
-    }
-
-/*       
-    printf( "%d ", Vec_PtrSize(vFront) );
-    printf( "( " );
-    Vec_PtrForEachEntry( vFront, pTemp, k )
-        printf( "%d ", Ivy_ObjRefs(Ivy_Regular(pTemp)) );
-    printf( ")\n" );
-*/
-    // collect nodes in the cone
-    if ( Ivy_ObjIsExor(pObj) )
-        Ivy_ManCollectCone( pObj, vFront, vCone );
-    else
-        Ivy_ManCollectCone( pObj, vLeaves, vCone );
-
-    // deref nodes in the cone
-    Vec_PtrForEachEntry( vCone, pTemp, k )
-    {
-        Ivy_ObjRefsDec( Ivy_ObjFanin0(pTemp) );
-        Ivy_ObjRefsDec( Ivy_ObjFanin1(pTemp) );
-        pTemp->fMarkB = 1;
-    }
-
-    // count the MFFC size
-    Vec_PtrForEachEntry( vFront, pTemp, k )
-        Ivy_Regular(pTemp)->fMarkA = 1;
-    nMffc = Ivy_NodeCountMffc( pObj );
-    Vec_PtrForEachEntry( vFront, pTemp, k )
-        Ivy_Regular(pTemp)->fMarkA = 0;
-
-    if ( fVerbose )
-    {
-    Counter = 0;
-    Vec_PtrForEachEntry( vCone, pTemp, k )
-        Counter += (Ivy_ObjRefs(pTemp) > 0);
-    printf( "%5d : Leaves = %2d. Cone = %2d. ConeRef = %2d.   Mffc = %d.   Lev = %d.  LevR = %d.\n", 
-        pObj->Id, Vec_PtrSize(vFront), Vec_PtrSize(vCone), Counter-1, nMffc, Ivy_ObjLevel(pObj), LevelR );
-    }
-/*
-    printf( "Leaves:" );
-    Vec_PtrForEachEntry( vLeaves, pTemp, k )
-        printf( " %d%s", Ivy_Regular(pTemp)->Id, Ivy_IsComplement(pTemp)? "\'" : "" );
-    printf( "\n" );
-    printf( "Cone:\n" );
-    Vec_PtrForEachEntry( vCone, pTemp, k )
-        printf( " %5d = %d%s %d%s\n", pTemp->Id,
-            Ivy_ObjFaninId0(pTemp), Ivy_ObjFaninC0(pTemp)? "\'" : "",
-            Ivy_ObjFaninId1(pTemp), Ivy_ObjFaninC1(pTemp)? "\'" : "" );
-*/
-
-    RetValue = Ivy_MultiPlus( vLeaves, vCone, Ivy_ObjType(pObj), nMffc + fUseZeroCost, vSols );
-
-    // ref nodes in the cone
-    Vec_PtrForEachEntry( vCone, pTemp, k )
-    {
-        Ivy_ObjRefsInc( Ivy_ObjFanin0(pTemp) );
-        Ivy_ObjRefsInc( Ivy_ObjFanin1(pTemp) );
-        pTemp->fMarkA = 0;
-        pTemp->fMarkB = 0;
-    }
-
-    if ( !RetValue )
-        return NULL;
-
-    if ( Vec_PtrSize( vSols ) == 1 )
-        return Vec_PtrEntry( vSols, 0 );
-    return Ivy_NodeBalanceBuildSuper( vSols, Ivy_ObjType(pObj), 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Comparison for node pointers.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeCountMffc_rec( Ivy_Obj_t * pNode )
-{
-    if ( Ivy_ObjRefs(pNode) > 0 || Ivy_ObjIsCi(pNode) || pNode->fMarkA )
-        return 0;
-    assert( pNode->fMarkB );
-    pNode->fMarkA = 1;
-//    printf( "%d ", pNode->Id );
-    if ( Ivy_ObjIsBuf(pNode) )
-        return Ivy_NodeCountMffc_rec( Ivy_ObjFanin0(pNode) );
-    return 1 + Ivy_NodeCountMffc_rec( Ivy_ObjFanin0(pNode) ) + Ivy_NodeCountMffc_rec( Ivy_ObjFanin1(pNode) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Comparison for node pointers.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeCountMffc( Ivy_Obj_t * pNode )
-{
-    assert( pNode->fMarkB );
-    return 1 + Ivy_NodeCountMffc_rec( Ivy_ObjFanin0(pNode) ) + Ivy_NodeCountMffc_rec( Ivy_ObjFanin1(pNode) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Comparison for node pointers.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManFindAlgCutCompare( Ivy_Obj_t ** pp1, Ivy_Obj_t ** pp2 )
-{
-    if ( *pp1 < *pp2 )
-        return -1;
-    if ( *pp1 > *pp2 )
-        return 1;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computing one algebraic cut.]
-
-  Description [Returns 1 if the tree-leaves of this node where traversed 
-  and found to have no external references (and have not been collected). 
-  Returns 0 if the tree-leaves have external references and are collected.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManFindAlgCut_rec( Ivy_Obj_t * pObj, Ivy_Type_t Type, Vec_Ptr_t * vFront, Vec_Ptr_t * vCone )
-{
-    int RetValue0, RetValue1;
-    Ivy_Obj_t * pObjR = Ivy_Regular(pObj);
-    assert( !Ivy_ObjIsBuf(pObjR) );
-    assert( Type != IVY_EXOR || !Ivy_IsComplement(pObj) );
-
-    // make sure the node is not visited twice in different polarities
-    if ( Ivy_IsComplement(pObj) )
-    { // if complemented, mark B
-        if ( pObjR->fMarkA )
-            return -1;
-        pObjR->fMarkB = 1;
-    }
-    else
-    { // if non-complicated, mark A
-        if ( pObjR->fMarkB )
-            return -1;
-        pObjR->fMarkA = 1;
-    }
-    Vec_PtrPush( vCone, pObjR );
-
-    // if the node is the end of the tree, return
-    if ( Ivy_IsComplement(pObj) || Ivy_ObjType(pObj) != Type )
-    {
-        if ( Ivy_ObjRefs(pObjR) == 1 )
-            return 1;
-        assert( Ivy_ObjRefs(pObjR) > 1 );
-        Vec_PtrPush( vFront, pObj );
-        return 0;
-    }
-
-    // branch on the node
-    assert( !Ivy_IsComplement(pObj) );
-    assert( Ivy_ObjIsNode(pObj) );
-    // what if buffer has more than one fanout???
-    RetValue0 = Ivy_ManFindAlgCut_rec( Ivy_ObjReal( Ivy_ObjChild0(pObj) ), Type, vFront, vCone );
-    RetValue1 = Ivy_ManFindAlgCut_rec( Ivy_ObjReal( Ivy_ObjChild1(pObj) ), Type, vFront, vCone );
-    if ( RetValue0 == -1 || RetValue1 == -1 )
-        return -1;
-
-    // the case when both have no external references
-    if ( RetValue0 && RetValue1 )
-    {
-        if ( Ivy_ObjRefs(pObj) == 1 )
-            return 1;
-        assert( Ivy_ObjRefs(pObj) > 1 );
-        Vec_PtrPush( vFront, pObj );
-        return 0;
-    }
-    // the case when one of them has external references
-    if ( RetValue0 )
-        Vec_PtrPush( vFront, Ivy_ObjReal( Ivy_ObjChild0(pObj) ) );
-    if ( RetValue1 )
-        Vec_PtrPush( vFront, Ivy_ObjReal( Ivy_ObjChild1(pObj) ) );
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computing one algebraic cut.]
-
-  Description [Algebraic cut stops when we hit (a) CI, (b) complemented edge,
-  (c) boundary of different gates. Returns 1 if this is a pure tree.
-  Returns -1 if the contant 0 is detected. Return 0 if the array can be used.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManFindAlgCut( Ivy_Obj_t * pRoot, Vec_Ptr_t * vFront, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vCone )
-{
-    Ivy_Obj_t * pObj, * pPrev;
-    int RetValue, i;
-    assert( !Ivy_IsComplement(pRoot) );
-    assert( Ivy_ObjIsNode(pRoot) );
-    // clear the frontier and collect the nodes
-    Vec_PtrClear( vCone );
-    Vec_PtrClear( vFront );
-    Vec_PtrClear( vLeaves );
-    RetValue = Ivy_ManFindAlgCut_rec( pRoot, Ivy_ObjType(pRoot), vFront, vCone );
-    // clean the marks
-    Vec_PtrForEachEntry( vCone, pObj, i )
-        pObj->fMarkA = pObj->fMarkB = 0;
-    // quit if the same node is found in both polarities
-    if ( RetValue == -1 )
-        return -1;
-    // return if the node is the root of a tree
-    if ( RetValue == 1 )
-        return 1;
-    // return if the cut is composed of two nodes
-    if ( Vec_PtrSize(vFront) <= 2 )
-        return 1;
-    // sort the entries in increasing order
-    Vec_PtrSort( vFront, Ivy_ManFindAlgCutCompare );
-    // remove duplicates from vFront and save the nodes in vLeaves
-    pPrev = Vec_PtrEntry(vFront, 0);
-    Vec_PtrPush( vLeaves, pPrev );
-    Vec_PtrForEachEntryStart( vFront, pObj, i, 1 )
-    {
-        // compare current entry and the previous entry
-        if ( pObj == pPrev )
-        {
-            if ( Ivy_ObjIsExor(pRoot) ) // A <+> A = 0
-            {
-                // vLeaves are no longer structural support of pRoot!!!
-                Vec_PtrPop(vLeaves);  
-                pPrev = Vec_PtrSize(vLeaves) == 0 ? NULL : Vec_PtrEntryLast(vLeaves);
-            }
-            continue;
-        }
-        if ( pObj == Ivy_Not(pPrev) )
-        {
-            assert( Ivy_ObjIsAnd(pRoot) );
-            return -1;
-        }
-        pPrev = pObj;
-        Vec_PtrPush( vLeaves, pObj );
-    }
-    if ( Vec_PtrSize(vLeaves) == 0 )
-        return -1;
-    if ( Vec_PtrSize(vLeaves) <= 2 )
-        return 1;
-    return 0;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivySeq.c b/src/aig/ivy/ivySeq.c
deleted file mode 100644
index 0ee29fee..00000000
--- a/src/aig/ivy/ivySeq.c
+++ /dev/null
@@ -1,1134 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivySeq.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
- 
-  Revision    [$Id: ivySeq.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-#include "deco.h"
-#include "rwt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static int Ivy_NodeRewriteSeq( Ivy_Man_t * pMan, Rwt_Man_t * p, Ivy_Obj_t * pNode, int fUseZeroCost );
-static void Ivy_GraphPrepare( Dec_Graph_t * pGraph, Ivy_Cut_t * pCut, Vec_Ptr_t * vFanins, char * pPerm );
-static unsigned Ivy_CutGetTruth( Ivy_Man_t * p, Ivy_Obj_t * pObj, int * pNums, int nNums );
-static Dec_Graph_t * Rwt_CutEvaluateSeq( Ivy_Man_t * pMan, Rwt_Man_t * p, Ivy_Obj_t * pRoot, Ivy_Cut_t * pCut, char * pPerm, Vec_Ptr_t * vFaninsCur, int nNodesSaved, int * pGainBest, unsigned uTruth );
-static int Ivy_GraphToNetworkSeqCountSeq( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Dec_Graph_t * pGraph, int NodeMax );
-static Ivy_Obj_t * Ivy_GraphToNetworkSeq( Ivy_Man_t * p, Dec_Graph_t * pGraph );
-static void Ivy_GraphUpdateNetworkSeq( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Dec_Graph_t * pGraph, int nGain );
-static Ivy_Store_t * Ivy_CutComputeForNode( Ivy_Man_t * p, Ivy_Obj_t * pObj, int nLeaves );
-
-static inline int Ivy_CutHashValue( int NodeId )  { return 1 << (NodeId % 31); }
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-//int nMoves;
-//int nMovesS;
-//int nClauses;
-//int timeInv;
-
-/**Function*************************************************************
-
-  Synopsis    [Performs incremental rewriting of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManRewriteSeq( Ivy_Man_t * p, int fUseZeroCost, int fVerbose )
-{ 
-    Rwt_Man_t * pManRwt;
-    Ivy_Obj_t * pNode;
-    int i, nNodes, nGain;
-    int clk, clkStart = clock();
-
-    // set the DC latch values
-    Ivy_ManForEachLatch( p, pNode, i )
-        pNode->Init = IVY_INIT_DC;
-    // start the rewriting manager
-    pManRwt = Rwt_ManStart( 0 );
-    p->pData = pManRwt;
-    if ( pManRwt == NULL )
-        return 0; 
-    // create fanouts
-    if ( p->fFanout == 0 )
-        Ivy_ManStartFanout( p );
-    // resynthesize each node once
-    nNodes = Ivy_ManObjIdMax(p);
-    Ivy_ManForEachNode( p, pNode, i )
-    {
-        assert( !Ivy_ObjIsBuf(pNode) );
-        assert( !Ivy_ObjIsBuf(Ivy_ObjFanin0(pNode)) );
-        assert( !Ivy_ObjIsBuf(Ivy_ObjFanin1(pNode)) );
-        // fix the fanin buffer problem
-//        Ivy_NodeFixBufferFanins( p, pNode );
-//        if ( Ivy_ObjIsBuf(pNode) )
-//            continue;
-        // stop if all nodes have been tried once
-        if ( i > nNodes ) 
-            break;
-        // for each cut, try to resynthesize it
-        nGain = Ivy_NodeRewriteSeq( p, pManRwt, pNode, fUseZeroCost );
-        if ( nGain > 0 || nGain == 0 && fUseZeroCost )
-        {
-            Dec_Graph_t * pGraph = Rwt_ManReadDecs(pManRwt);
-            int fCompl           = Rwt_ManReadCompl(pManRwt);
-            // complement the FF if needed
-clk = clock();
-            if ( fCompl ) Dec_GraphComplement( pGraph );
-            Ivy_GraphUpdateNetworkSeq( p, pNode, pGraph, nGain );
-            if ( fCompl ) Dec_GraphComplement( pGraph );
-Rwt_ManAddTimeUpdate( pManRwt, clock() - clk );
-        }
-    }
-Rwt_ManAddTimeTotal( pManRwt, clock() - clkStart );
-    // print stats
-    if ( fVerbose )
-        Rwt_ManPrintStats( pManRwt );
-    // delete the managers
-    Rwt_ManStop( pManRwt );
-    p->pData = NULL;
-    // fix the levels
-    Ivy_ManResetLevels( p );
-//    if ( Ivy_ManCheckFanoutNums(p) )
-//        printf( "Ivy_ManRewritePre(): The check has failed.\n" );
-    // check
-    if ( !Ivy_ManCheck(p) )
-        printf( "Ivy_ManRewritePre(): The check has failed.\n" );
-    return 1;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Performs rewriting for one node.]
-
-  Description [This procedure considers all the cuts computed for the node
-  and tries to rewrite each of them using the "forest" of different AIG
-  structures precomputed and stored in the RWR manager. 
-  Determines the best rewriting and computes the gain in the number of AIG
-  nodes in the final network. In the end, p->vFanins contains information 
-  about the best cut that can be used for rewriting, while p->pGraph gives 
-  the decomposition dag (represented using decomposition graph data structure).
-  Returns gain in the number of nodes or -1 if node cannot be rewritten.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_NodeRewriteSeq( Ivy_Man_t * pMan, Rwt_Man_t * p, Ivy_Obj_t * pNode, int fUseZeroCost )
-{
-    int fVeryVerbose = 0;
-    Dec_Graph_t * pGraph;
-    Ivy_Store_t * pStore;
-    Ivy_Cut_t * pCut;
-    Ivy_Obj_t * pFanin;//, * pFanout;
-    Vec_Ptr_t * vFanout;
-    unsigned uPhase, uTruthBest, uTruth;//, nNewClauses;
-    char * pPerm;
-    int nNodesSaved, nNodesSaveCur;
-    int i, c, GainCur, GainBest = -1;
-    int clk, clk2;//, clk3;
-
-    p->nNodesConsidered++;
-    // get the node's cuts
-clk = clock();
-    pStore = Ivy_CutComputeForNode( pMan, pNode, 5 );
-p->timeCut += clock() - clk;
-
-    // go through the cuts
-clk = clock();
-    vFanout = Vec_PtrAlloc( 100 );
-    for ( c = 1; c < pStore->nCuts; c++ )
-    {
-        pCut = pStore->pCuts + c;
-        // consider only 4-input cuts
-        if ( pCut->nSize != 4 )
-            continue;
-        // skip the cuts with buffers
-        for ( i = 0; i < (int)pCut->nSize; i++ )
-            if ( Ivy_ObjIsBuf( Ivy_ManObj(pMan, Ivy_LeafId(pCut->pArray[i])) ) )
-                break;
-        if ( i != pCut->nSize )
-        {
-            p->nCutsBad++;
-            continue;
-        }
-        p->nCutsGood++;
-        // get the fanin permutation
-clk2 = clock();
-        uTruth = 0xFFFF & Ivy_CutGetTruth( pMan, pNode, pCut->pArray, pCut->nSize );  // truth table
-p->timeTruth += clock() - clk2;
-        pPerm = p->pPerms4[ p->pPerms[uTruth] ];
-        uPhase = p->pPhases[uTruth];
-        // collect fanins with the corresponding permutation/phase
-        Vec_PtrClear( p->vFaninsCur );
-        Vec_PtrFill( p->vFaninsCur, (int)pCut->nSize, 0 );
-        for ( i = 0; i < (int)pCut->nSize; i++ )
-        {
-            pFanin = Ivy_ManObj( pMan, Ivy_LeafId( pCut->pArray[pPerm[i]] ) );
-            assert( Ivy_ObjIsNode(pFanin) || Ivy_ObjIsCi(pFanin) || Ivy_ObjIsConst1(pFanin) );
-            pFanin = Ivy_NotCond(pFanin, ((uPhase & (1<<i)) > 0) );
-            Vec_PtrWriteEntry( p->vFaninsCur, i, pFanin );
-        }
-clk2 = clock();
-        // mark the fanin boundary 
-        Vec_PtrForEachEntry( p->vFaninsCur, pFanin, i )
-            Ivy_ObjRefsInc( Ivy_Regular(pFanin) );
-        // label MFFC with current ID
-        Ivy_ManIncrementTravId( pMan );
-        nNodesSaved = Ivy_ObjMffcLabel( pMan, pNode );
-        // label fanouts with the current ID
-//        Ivy_ObjForEachFanout( pMan, pNode, vFanout, pFanout, i )
-//            Ivy_ObjSetTravIdCurrent( pMan, pFanout );
-        // unmark the fanin boundary
-        Vec_PtrForEachEntry( p->vFaninsCur, pFanin, i )
-            Ivy_ObjRefsDec( Ivy_Regular(pFanin) );
-p->timeMffc += clock() - clk2;
-
-        // evaluate the cut
-clk2 = clock();
-        pGraph = Rwt_CutEvaluateSeq( pMan, p, pNode, pCut, pPerm, p->vFaninsCur, nNodesSaved, &GainCur, uTruth );
-p->timeEval += clock() - clk2;
-
-
-        // check if the cut is better than the current best one
-        if ( pGraph != NULL && GainBest < GainCur )
-        {
-            // save this form
-            nNodesSaveCur = nNodesSaved;
-            GainBest   = GainCur;
-            p->pGraph  = pGraph;
-            p->pCut    = pCut;
-            p->pPerm   = pPerm;
-            p->fCompl  = ((uPhase & (1<<4)) > 0);
-            uTruthBest = uTruth;
-            // collect fanins in the
-            Vec_PtrClear( p->vFanins );
-            Vec_PtrForEachEntry( p->vFaninsCur, pFanin, i )
-                Vec_PtrPush( p->vFanins, pFanin );
-        }
-    }
-    Vec_PtrFree( vFanout );
-p->timeRes += clock() - clk;
-
-    if ( GainBest == -1 )
-        return -1;
-/*
-    {
-    Ivy_Cut_t * pCut = p->pCut;
-    printf( "Node %5d. Using cut : {", Ivy_ObjId(pNode) );
-    for ( i = 0; i < pCut->nSize; i++ )
-        printf( " %d(%d)", Ivy_LeafId(pCut->pArray[i]), Ivy_LeafLat(pCut->pArray[i]) );
-    printf( " }\n" );
-    }
-*/
-
-//clk3 = clock();
-//nNewClauses = Ivy_CutTruthPrint( pMan, p->pCut, uTruth );
-//timeInv += clock() - clk;
-
-//    nClauses += nNewClauses;
-//    nMoves++;
-//    if ( nNewClauses > 0 )
-//        nMovesS++;
-
-    // copy the leaves
-    Ivy_GraphPrepare( p->pGraph, p->pCut, p->vFanins, p->pPerm );
-
-    p->nScores[p->pMap[uTruthBest]]++;
-    p->nNodesGained += GainBest;
-    if ( fUseZeroCost || GainBest > 0 )
-        p->nNodesRewritten++;
-
-/*
-    if ( GainBest > 0 )
-    {
-        Ivy_Cut_t * pCut = p->pCut;
-        printf( "Node %5d. Using cut : {", Ivy_ObjId(pNode) );
-        for ( i = 0; i < pCut->nSize; i++ )
-            printf( " %5d(%2d)", Ivy_LeafId(pCut->pArray[i]), Ivy_LeafLat(pCut->pArray[i]) );
-        printf( " }\n" );
-    }
-*/
-
-    // report the progress
-    if ( fVeryVerbose && GainBest > 0 )
-    {
-        printf( "Node %6d :   ", Ivy_ObjId(pNode) );
-        printf( "Fanins = %d. ", p->vFanins->nSize );
-        printf( "Save = %d.  ", nNodesSaveCur );
-        printf( "Add = %d.  ",  nNodesSaveCur-GainBest );
-        printf( "GAIN = %d.  ", GainBest );
-        printf( "Cone = %d.  ", p->pGraph? Dec_GraphNodeNum(p->pGraph) : 0 );
-        printf( "Class = %d.  ", p->pMap[uTruthBest] );
-        printf( "\n" );
-    }
-    return GainBest;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Evaluates the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dec_Graph_t * Rwt_CutEvaluateSeq( Ivy_Man_t * pMan, Rwt_Man_t * p, Ivy_Obj_t * pRoot, Ivy_Cut_t * pCut, char * pPerm, Vec_Ptr_t * vFaninsCur, int nNodesSaved, int * pGainBest, unsigned uTruth )
-{
-    Vec_Ptr_t * vSubgraphs;
-    Dec_Graph_t * pGraphBest, * pGraphCur;
-    Rwt_Node_t * pNode;
-    int nNodesAdded, GainBest, i;
-    // find the matching class of subgraphs
-    vSubgraphs = Vec_VecEntry( p->vClasses, p->pMap[uTruth] );
-    p->nSubgraphs += vSubgraphs->nSize;
-    // determine the best subgraph
-    GainBest = -1;
-    Vec_PtrForEachEntry( vSubgraphs, pNode, i )
-    {
-        // get the current graph
-        pGraphCur = (Dec_Graph_t *)pNode->pNext;
-
-//        if ( pRoot->Id == 8648 )
-//        Dec_GraphPrint( stdout, pGraphCur, NULL, NULL );
-        // copy the leaves
-//        Vec_PtrForEachEntry( vFaninsCur, pFanin, k )
-//            Dec_GraphNode(pGraphCur, k)->pFunc = pFanin;
-        Ivy_GraphPrepare( pGraphCur, pCut, vFaninsCur, pPerm );
-
-        // detect how many unlabeled nodes will be reused
-        nNodesAdded = Ivy_GraphToNetworkSeqCountSeq( pMan, pRoot, pGraphCur, nNodesSaved );
-        if ( nNodesAdded == -1 )
-            continue;
-        assert( nNodesSaved >= nNodesAdded );
-        // count the gain at this node
-        if ( GainBest < nNodesSaved - nNodesAdded )
-        {
-            GainBest   = nNodesSaved - nNodesAdded;
-            pGraphBest = pGraphCur;
-        }
-    }
-    if ( GainBest == -1 )
-        return NULL;
-    *pGainBest = GainBest;
-    return pGraphBest;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_GraphPrepare( Dec_Graph_t * pGraph, Ivy_Cut_t * pCut, Vec_Ptr_t * vFanins, char * pPerm )
-{
-    Dec_Node_t * pNode, * pNode0, * pNode1;
-    int i;
-    assert( Dec_GraphLeaveNum(pGraph) == pCut->nSize );
-    assert( Vec_PtrSize(vFanins) == pCut->nSize );
-    // label the leaves with latch numbers
-    Dec_GraphForEachLeaf( pGraph, pNode, i )
-    {
-        pNode->pFunc = Vec_PtrEntry( vFanins, i );
-        pNode->nLat2 = Ivy_LeafLat( pCut->pArray[pPerm[i]] );
-    }
-    // propagate latches through the nodes
-    Dec_GraphForEachNode( pGraph, pNode, i )
-    {
-        // get the children of this node
-        pNode0 = Dec_GraphNode( pGraph, pNode->eEdge0.Node );
-        pNode1 = Dec_GraphNode( pGraph, pNode->eEdge1.Node );
-        // distribute the latches
-        pNode->nLat2 = IVY_MIN( pNode0->nLat2, pNode1->nLat2 );
-        pNode->nLat0 = pNode0->nLat2 - pNode->nLat2;
-        pNode->nLat1 = pNode1->nLat2 - pNode->nLat2;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of new nodes added when using this graph.]
-
-  Description [AIG nodes for the fanins should be assigned to pNode->pFunc 
-  of the leaves of the graph before calling this procedure. 
-  Returns -1 if the number of nodes and levels exceeded the given limit or 
-  the number of levels exceeded the maximum allowed level.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_GraphToNetworkSeqCountSeq( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Dec_Graph_t * pGraph, int NodeMax )
-{
-    Dec_Node_t * pNode, * pNode0, * pNode1;
-    Ivy_Obj_t * pAnd, * pAnd0, * pAnd1;
-    int i, k, Counter, fCompl;
-    // check for constant function or a literal
-    if ( Dec_GraphIsConst(pGraph) || Dec_GraphIsVar(pGraph) )
-        return 0;
-    // compute the AIG size after adding the internal nodes
-    Counter = 0;
-    Dec_GraphForEachNode( pGraph, pNode, i )
-    {
-        // get the children of this node
-        pNode0 = Dec_GraphNode( pGraph, pNode->eEdge0.Node );
-        pNode1 = Dec_GraphNode( pGraph, pNode->eEdge1.Node );
-        // get the AIG nodes corresponding to the children 
-        pAnd0 = pNode0->pFunc; 
-        pAnd1 = pNode1->pFunc; 
-        // skip the latches
-        for ( k = 0; pAnd0 && k < (int)pNode->nLat0; k++ )
-        {
-            fCompl = Ivy_IsComplement(pAnd0);
-            pAnd0 = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, Ivy_Regular(pAnd0), NULL, IVY_LATCH, IVY_INIT_DC) );
-            if ( pAnd0 )
-                pAnd0 = Ivy_NotCond( pAnd0, fCompl );
-        }
-        for ( k = 0; pAnd1 && k < (int)pNode->nLat1; k++ )
-        {
-            fCompl = Ivy_IsComplement(pAnd1);
-            pAnd1 = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, Ivy_Regular(pAnd1), NULL, IVY_LATCH, IVY_INIT_DC) );
-            if ( pAnd1 )
-                pAnd1 = Ivy_NotCond( pAnd1, fCompl );
-        }
-        // get the new node
-        if ( pAnd0 && pAnd1 )
-        {
-            // if they are both present, find the resulting node
-            pAnd0 = Ivy_NotCond( pAnd0, pNode->eEdge0.fCompl );
-            pAnd1 = Ivy_NotCond( pAnd1, pNode->eEdge1.fCompl );
-            assert( !Ivy_ObjIsLatch(Ivy_Regular(pAnd0)) || !Ivy_ObjIsLatch(Ivy_Regular(pAnd1)) );
-            if ( Ivy_Regular(pAnd0) == Ivy_Regular(pAnd1) || Ivy_ObjIsConst1(Ivy_Regular(pAnd0)) || Ivy_ObjIsConst1(Ivy_Regular(pAnd1)) )
-                pAnd = Ivy_And( p, pAnd0, pAnd1 );
-            else
-                pAnd = Ivy_TableLookup( p, Ivy_ObjCreateGhost(p, pAnd0, pAnd1, IVY_AND, IVY_INIT_NONE) );
-            // return -1 if the node is the same as the original root
-            if ( Ivy_Regular(pAnd) == pRoot )
-                return -1;
-        }
-        else
-            pAnd = NULL;
-        // count the number of added nodes
-        if ( pAnd == NULL || Ivy_ObjIsTravIdCurrent(p, Ivy_Regular(pAnd)) )
-        {
-            if ( ++Counter > NodeMax )
-                return -1;
-        }
-        pNode->pFunc = pAnd;
-    }
-    return Counter;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Transforms the decomposition graph into the AIG.]
-
-  Description [AIG nodes for the fanins should be assigned to pNode->pFunc
-  of the leaves of the graph before calling this procedure.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_GraphToNetworkSeq( Ivy_Man_t * p, Dec_Graph_t * pGraph )
-{
-    Ivy_Obj_t * pAnd0, * pAnd1;
-    Dec_Node_t * pNode;
-    int i, k;
-    // check for constant function
-    if ( Dec_GraphIsConst(pGraph) )
-        return Ivy_NotCond( Ivy_ManConst1(p), Dec_GraphIsComplement(pGraph) );
-    // check for a literal
-    if ( Dec_GraphIsVar(pGraph) )
-    {
-        // get the variable node
-        pNode = Dec_GraphVar(pGraph);
-        // add the remaining latches
-        for ( k = 0; k < (int)pNode->nLat2; k++ )
-            pNode->pFunc = Ivy_Latch( p, pNode->pFunc, IVY_INIT_DC );
-        return Ivy_NotCond( pNode->pFunc, Dec_GraphIsComplement(pGraph) );
-    }
-    // build the AIG nodes corresponding to the AND gates of the graph
-    Dec_GraphForEachNode( pGraph, pNode, i )
-    {
-        pAnd0 = Ivy_NotCond( Dec_GraphNode(pGraph, pNode->eEdge0.Node)->pFunc, pNode->eEdge0.fCompl ); 
-        pAnd1 = Ivy_NotCond( Dec_GraphNode(pGraph, pNode->eEdge1.Node)->pFunc, pNode->eEdge1.fCompl ); 
-        // add the latches
-        for ( k = 0; k < (int)pNode->nLat0; k++ )
-            pAnd0 = Ivy_Latch( p, pAnd0, IVY_INIT_DC );
-        for ( k = 0; k < (int)pNode->nLat1; k++ )
-            pAnd1 = Ivy_Latch( p, pAnd1, IVY_INIT_DC );
-        // create the node
-        pNode->pFunc = Ivy_And( p, pAnd0, pAnd1 );
-    }
-    // add the remaining latches
-    for ( k = 0; k < (int)pNode->nLat2; k++ )
-        pNode->pFunc = Ivy_Latch( p, pNode->pFunc, IVY_INIT_DC );
-    // complement the result if necessary
-    return Ivy_NotCond( pNode->pFunc, Dec_GraphIsComplement(pGraph) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Replaces MFFC of the node by the new factored form.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_GraphUpdateNetworkSeq( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Dec_Graph_t * pGraph, int nGain )
-{
-    Ivy_Obj_t * pRootNew;
-    int nNodesNew, nNodesOld;
-    nNodesOld = Ivy_ManNodeNum(p);
-    // create the new structure of nodes
-    pRootNew = Ivy_GraphToNetworkSeq( p, pGraph );
-    Ivy_ObjReplace( p, pRoot, pRootNew, 1, 0, 0 );
-    // compare the gains
-    nNodesNew = Ivy_ManNodeNum(p);
-    assert( nGain <= nNodesOld - nNodesNew );
-    // propagate the buffer
-    Ivy_ManPropagateBuffers( p, 0 );
-}
-
-
-
-
-
-
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Ivy_CutGetTruth_rec( Ivy_Man_t * p, int Leaf, int * pNums, int nNums )
-{
-    static unsigned uMasks[5] = { 0xAAAAAAAA, 0xCCCCCCCC, 0xF0F0F0F0, 0xFF00FF00, 0xFFFF0000 };
-    unsigned uTruth0, uTruth1;
-    Ivy_Obj_t * pObj;
-    int i;
-    for ( i = 0; i < nNums; i++ )
-        if ( Leaf == pNums[i] )
-            return uMasks[i];
-    pObj = Ivy_ManObj( p, Ivy_LeafId(Leaf) );
-    if ( Ivy_ObjIsLatch(pObj) )
-    {
-        assert( !Ivy_ObjFaninC0(pObj) );
-        Leaf = Ivy_LeafCreate( Ivy_ObjFaninId0(pObj), Ivy_LeafLat(Leaf) + 1 );
-        return Ivy_CutGetTruth_rec( p, Leaf, pNums, nNums );
-    }
-    assert( Ivy_ObjIsNode(pObj) || Ivy_ObjIsBuf(pObj) );
-    Leaf = Ivy_LeafCreate( Ivy_ObjFaninId0(pObj), Ivy_LeafLat(Leaf) );
-    uTruth0 = Ivy_CutGetTruth_rec( p, Leaf, pNums, nNums );
-    if ( Ivy_ObjFaninC0(pObj) )
-        uTruth0 = ~uTruth0;
-    if ( Ivy_ObjIsBuf(pObj) )
-        return uTruth0;
-    Leaf = Ivy_LeafCreate( Ivy_ObjFaninId1(pObj), Ivy_LeafLat(Leaf) );
-    uTruth1 = Ivy_CutGetTruth_rec( p, Leaf, pNums, nNums );
-    if ( Ivy_ObjFaninC1(pObj) )
-        uTruth1 = ~uTruth1;
-    return uTruth0 & uTruth1;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Ivy_CutGetTruth( Ivy_Man_t * p, Ivy_Obj_t * pObj, int * pNums, int nNums )
-{
-    assert( Ivy_ObjIsNode(pObj) );
-    assert( nNums < 6 );
-    return Ivy_CutGetTruth_rec( p, Ivy_LeafCreate(pObj->Id, 0), pNums, nNums );
-}
-
-
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the cut can be constructed; 0 otherwise.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_CutPrescreen( Ivy_Cut_t * pCut, int Id0, int Id1 )
-{
-    int i;
-    if ( pCut->nSize < pCut->nSizeMax )
-        return 1;
-    for ( i = 0; i < pCut->nSize; i++ )
-        if ( pCut->pArray[i] == Id0 || pCut->pArray[i] == Id1 )
-            return 1;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives new cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_CutDeriveNew2( Ivy_Cut_t * pCut, Ivy_Cut_t * pCutNew, int IdOld, int IdNew0, int IdNew1 )
-{
-    unsigned uHash = 0;
-    int i, k;
-    assert( pCut->nSize > 0 );
-    assert( IdNew0 < IdNew1 );
-    for ( i = k = 0; i < pCut->nSize; i++ )
-    {
-        if ( pCut->pArray[i] == IdOld )
-            continue;
-        if ( IdNew0 >= 0 )
-        {
-            if ( IdNew0 <= pCut->pArray[i] )
-            {
-                if ( IdNew0 < pCut->pArray[i] )
-                {
-                    if ( k == pCut->nSizeMax )
-                        return 0;
-                    pCutNew->pArray[ k++ ] = IdNew0;
-                    uHash |= Ivy_CutHashValue( IdNew0 );
-                }
-                IdNew0 = -1;
-            }
-        }
-        if ( IdNew1 >= 0 )
-        {
-            if ( IdNew1 <= pCut->pArray[i] )
-            {
-                if ( IdNew1 < pCut->pArray[i] )
-                {
-                    if ( k == pCut->nSizeMax )
-                        return 0;
-                    pCutNew->pArray[ k++ ] = IdNew1;
-                    uHash |= Ivy_CutHashValue( IdNew1 );
-                }
-                IdNew1 = -1;
-            }
-        }
-        if ( k == pCut->nSizeMax )
-            return 0;
-        pCutNew->pArray[ k++ ] = pCut->pArray[i];
-        uHash |= Ivy_CutHashValue( pCut->pArray[i] );
-    }
-    if ( IdNew0 >= 0 )
-    {
-        if ( k == pCut->nSizeMax )
-            return 0;
-        pCutNew->pArray[ k++ ] = IdNew0;
-        uHash |= Ivy_CutHashValue( IdNew0 );
-    }
-    if ( IdNew1 >= 0 )
-    {
-        if ( k == pCut->nSizeMax )
-            return 0;
-        pCutNew->pArray[ k++ ] = IdNew1;
-        uHash |= Ivy_CutHashValue( IdNew1 );
-    }
-    pCutNew->nSize = k;
-    pCutNew->uHash = uHash;
-    assert( pCutNew->nSize <= pCut->nSizeMax );
-    for ( i = 1; i < pCutNew->nSize; i++ )
-        assert( pCutNew->pArray[i-1] < pCutNew->pArray[i] );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives new cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_CutDeriveNew( Ivy_Cut_t * pCut, Ivy_Cut_t * pCutNew, int IdOld, int IdNew0, int IdNew1 )
-{
-    unsigned uHash = 0;
-    int i, k; 
-    assert( pCut->nSize > 0 );
-    assert( IdNew0 < IdNew1 );
-    for ( i = k = 0; i < pCut->nSize; i++ )
-    {
-        if ( pCut->pArray[i] == IdOld )
-            continue;
-        if ( IdNew0 <= pCut->pArray[i] )
-        {
-            if ( IdNew0 < pCut->pArray[i] )
-            {
-                pCutNew->pArray[ k++ ] = IdNew0;
-                uHash |= Ivy_CutHashValue( IdNew0 );
-            }
-            IdNew0 = 0x7FFFFFFF;
-        }
-        if ( IdNew1 <= pCut->pArray[i] )
-        {
-            if ( IdNew1 < pCut->pArray[i] )
-            {
-                pCutNew->pArray[ k++ ] = IdNew1;
-                uHash |= Ivy_CutHashValue( IdNew1 );
-            }
-            IdNew1 = 0x7FFFFFFF;
-        }
-        pCutNew->pArray[ k++ ] = pCut->pArray[i];
-        uHash |= Ivy_CutHashValue( pCut->pArray[i] );
-    }
-    if ( IdNew0 < 0x7FFFFFFF )
-    {
-        pCutNew->pArray[ k++ ] = IdNew0;
-        uHash |= Ivy_CutHashValue( IdNew0 );
-    }
-    if ( IdNew1 < 0x7FFFFFFF )
-    {
-        pCutNew->pArray[ k++ ] = IdNew1;
-        uHash |= Ivy_CutHashValue( IdNew1 );
-    }
-    pCutNew->nSize = k;
-    pCutNew->uHash = uHash;
-    assert( pCutNew->nSize <= pCut->nSizeMax );
-//    for ( i = 1; i < pCutNew->nSize; i++ )
-//        assert( pCutNew->pArray[i-1] < pCutNew->pArray[i] );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Find the hash value of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Ivy_NodeCutHash( Ivy_Cut_t * pCut )
-{
-    int i;
-    pCut->uHash = 0;
-    for ( i = 0; i < pCut->nSize; i++ )
-        pCut->uHash |= (1 << (pCut->pArray[i] % 31));
-    return pCut->uHash;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives new cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_CutDeriveNew3( Ivy_Cut_t * pCut, Ivy_Cut_t * pCutNew, int IdOld, int IdNew0, int IdNew1 )
-{
-    int i, k; 
-    assert( pCut->nSize > 0 );
-    assert( IdNew0 < IdNew1 );
-    for ( i = k = 0; i < pCut->nSize; i++ )
-    {
-        if ( pCut->pArray[i] == IdOld )
-            continue;
-        if ( IdNew0 <= pCut->pArray[i] )
-        {
-            if ( IdNew0 < pCut->pArray[i] )
-                pCutNew->pArray[ k++ ] = IdNew0;
-            IdNew0 = 0x7FFFFFFF;
-        }
-        if ( IdNew1 <= pCut->pArray[i] )
-        {
-            if ( IdNew1 < pCut->pArray[i] )
-                pCutNew->pArray[ k++ ] = IdNew1;
-            IdNew1 = 0x7FFFFFFF;
-        }
-        pCutNew->pArray[ k++ ] = pCut->pArray[i];
-    }
-    if ( IdNew0 < 0x7FFFFFFF )
-        pCutNew->pArray[ k++ ] = IdNew0;
-    if ( IdNew1 < 0x7FFFFFFF )
-        pCutNew->pArray[ k++ ] = IdNew1;
-    pCutNew->nSize = k;
-    assert( pCutNew->nSize <= pCut->nSizeMax );
-    Ivy_NodeCutHash( pCutNew );
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if pDom is contained in pCut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline int Ivy_CutCheckDominance( Ivy_Cut_t * pDom, Ivy_Cut_t * pCut )
-{
-    int i, k;
-    for ( i = 0; i < pDom->nSize; i++ )
-    {
-        assert( i==0 || pDom->pArray[i-1] < pDom->pArray[i] );
-        for ( k = 0; k < pCut->nSize; k++ )
-            if ( pDom->pArray[i] == pCut->pArray[k] )
-                break;
-        if ( k == pCut->nSize ) // node i in pDom is not contained in pCut
-            return 0;
-    }
-    // every node in pDom is contained in pCut
-    return 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Check if the cut exists.]
-
-  Description [Returns 1 if the cut exists.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_CutFindOrAddFilter( Ivy_Store_t * pCutStore, Ivy_Cut_t * pCutNew )
-{
-    Ivy_Cut_t * pCut;
-    int i, k;
-    assert( pCutNew->uHash );
-    // try to find the cut
-    for ( i = 0; i < pCutStore->nCuts; i++ )
-    {
-        pCut = pCutStore->pCuts + i;
-        if ( pCut->nSize == 0 )
-            continue;
-        if ( pCut->nSize == pCutNew->nSize )
-        {
-            if ( pCut->uHash == pCutNew->uHash )
-            {
-                for ( k = 0; k < pCutNew->nSize; k++ )
-                    if ( pCut->pArray[k] != pCutNew->pArray[k] )
-                        break;
-                if ( k == pCutNew->nSize )
-                    return 1;
-            }
-            continue;
-        }
-        if ( pCut->nSize < pCutNew->nSize )
-        {
-            // skip the non-contained cuts
-            if ( (pCut->uHash & pCutNew->uHash) != pCut->uHash )
-                continue;
-            // check containment seriously
-            if ( Ivy_CutCheckDominance( pCut, pCutNew ) )
-                return 1;
-            continue;
-        }
-        // check potential containment of other cut
-
-        // skip the non-contained cuts
-        if ( (pCut->uHash & pCutNew->uHash) != pCutNew->uHash )
-            continue;
-        // check containment seriously
-        if ( Ivy_CutCheckDominance( pCutNew, pCut ) )
-        {
-            // remove the current cut
-            pCut->nSize = 0;
-        }
-    }
-    assert( pCutStore->nCuts < pCutStore->nCutsMax );
-    // add the cut
-    pCut = pCutStore->pCuts + pCutStore->nCuts++;
-    *pCut = *pCutNew;
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compresses the cut representation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_CutCompactAll( Ivy_Store_t * pCutStore )
-{
-    Ivy_Cut_t * pCut;
-    int i, k;
-    pCutStore->nCutsM = 0;
-    for ( i = k = 0; i < pCutStore->nCuts; i++ )
-    {
-        pCut = pCutStore->pCuts + i;
-        if ( pCut->nSize == 0 )
-            continue;
-        if ( pCut->nSize < pCut->nSizeMax )
-            pCutStore->nCutsM++;
-        pCutStore->pCuts[k++] = *pCut;
-    }
-    pCutStore->nCuts = k;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Print the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_CutPrintForNode( Ivy_Cut_t * pCut )
-{
-    int i;
-    assert( pCut->nSize > 0 );
-    printf( "%d : {", pCut->nSize );
-    for ( i = 0; i < pCut->nSize; i++ )
-        printf( " %d", pCut->pArray[i] );
-    printf( " }\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_CutPrintForNodes( Ivy_Store_t * pCutStore )
-{
-    int i;
-    printf( "Node %d\n", pCutStore->pCuts[0].pArray[0] );
-    for ( i = 0; i < pCutStore->nCuts; i++ )
-        Ivy_CutPrintForNode( pCutStore->pCuts + i );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     [] 
-
-***********************************************************************/
-static inline int Ivy_CutReadLeaf( Ivy_Obj_t * pFanin )
-{
-    int nLats, iLeaf;
-    assert( !Ivy_IsComplement(pFanin) );
-    if ( !Ivy_ObjIsLatch(pFanin) )
-        return Ivy_LeafCreate( pFanin->Id, 0 );
-    iLeaf = Ivy_CutReadLeaf(Ivy_ObjFanin0(pFanin));
-    nLats = Ivy_LeafLat(iLeaf);
-    assert( nLats < IVY_LEAF_MASK );
-    return 1 + iLeaf;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Store_t * Ivy_CutComputeForNode( Ivy_Man_t * p, Ivy_Obj_t * pObj, int nLeaves )
-{
-    static Ivy_Store_t CutStore, * pCutStore = &CutStore;
-    Ivy_Cut_t CutNew, * pCutNew = &CutNew, * pCut;
-    Ivy_Man_t * pMan = p;
-    Ivy_Obj_t * pLeaf;
-    int i, k, Temp, nLats, iLeaf0, iLeaf1;
-
-    assert( nLeaves <= IVY_CUT_INPUT );
-
-    // start the structure
-    pCutStore->nCuts = 0;
-    pCutStore->nCutsMax = IVY_CUT_LIMIT;
-    // start the trivial cut
-    pCutNew->uHash = 0;
-    pCutNew->nSize = 1;
-    pCutNew->nSizeMax = nLeaves;
-    pCutNew->pArray[0] = Ivy_LeafCreate( pObj->Id, 0 );
-    pCutNew->uHash = Ivy_CutHashValue( pCutNew->pArray[0] );
-    // add the trivial cut
-    pCutStore->pCuts[pCutStore->nCuts++] = *pCutNew;
-    assert( pCutStore->nCuts == 1 );
-
-    // explore the cuts
-    for ( i = 0; i < pCutStore->nCuts; i++ )
-    {
-        // expand this cut
-        pCut = pCutStore->pCuts + i;
-        if ( pCut->nSize == 0 )
-            continue;
-        for ( k = 0; k < pCut->nSize; k++ )
-        {
-            pLeaf = Ivy_ManObj( p, Ivy_LeafId(pCut->pArray[k]) );
-            if ( Ivy_ObjIsCi(pLeaf) || Ivy_ObjIsConst1(pLeaf) )
-                continue;
-            assert( Ivy_ObjIsNode(pLeaf) );
-            nLats = Ivy_LeafLat(pCut->pArray[k]);
-
-            // get the fanins fanins
-            iLeaf0 = Ivy_CutReadLeaf( Ivy_ObjFanin0(pLeaf) );
-            iLeaf1 = Ivy_CutReadLeaf( Ivy_ObjFanin1(pLeaf) );
-            assert( nLats + Ivy_LeafLat(iLeaf0) < IVY_LEAF_MASK && nLats + Ivy_LeafLat(iLeaf1) < IVY_LEAF_MASK );
-            iLeaf0 = nLats + iLeaf0;
-            iLeaf1 = nLats + iLeaf1;
-            if ( !Ivy_CutPrescreen( pCut, iLeaf0, iLeaf1 ) )
-                continue;
-            // the given cut exist
-            if ( iLeaf0 > iLeaf1 )
-                Temp = iLeaf0, iLeaf0 = iLeaf1, iLeaf1 = Temp;
-            // create the new cut
-            if ( !Ivy_CutDeriveNew( pCut, pCutNew, pCut->pArray[k], iLeaf0, iLeaf1 ) )
-                continue;
-            // add the cut
-            Ivy_CutFindOrAddFilter( pCutStore, pCutNew );
-            if ( pCutStore->nCuts == IVY_CUT_LIMIT )
-                break;
-        }
-        if ( pCutStore->nCuts == IVY_CUT_LIMIT )
-            break;
-    }
-    if ( pCutStore->nCuts == IVY_CUT_LIMIT )
-        pCutStore->fSatur = 1;
-    else
-        pCutStore->fSatur = 0;
-//    printf( "%d ", pCutStore->nCuts );
-    Ivy_CutCompactAll( pCutStore );
-//    printf( "%d \n", pCutStore->nCuts );
-//    Ivy_CutPrintForNodes( pCutStore );
-    return pCutStore;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_CutComputeAll( Ivy_Man_t * p, int nInputs )
-{
-    Ivy_Store_t * pStore;
-    Ivy_Obj_t * pObj;
-    int i, nCutsTotal, nCutsTotalM, nNodeTotal, nNodeOver;
-    int clk = clock();
-    if ( nInputs > IVY_CUT_INPUT )
-    {
-        printf( "Cannot compute cuts for more than %d inputs.\n", IVY_CUT_INPUT );
-        return;
-    }
-    nNodeTotal = nNodeOver = 0;
-    nCutsTotal = nCutsTotalM = -Ivy_ManNodeNum(p);
-    Ivy_ManForEachObj( p, pObj, i )
-    {
-        if ( !Ivy_ObjIsNode(pObj) )
-            continue;
-        pStore = Ivy_CutComputeForNode( p, pObj, nInputs );
-        nCutsTotal  += pStore->nCuts;
-        nCutsTotalM += pStore->nCutsM;
-        nNodeOver   += pStore->fSatur;
-        nNodeTotal++;
-    }
-    printf( "All = %6d. Minus = %6d. Triv = %6d.   Node = %6d. Satur = %6d.  ", 
-        nCutsTotal, nCutsTotalM, Ivy_ManPiNum(p) + Ivy_ManNodeNum(p), nNodeTotal, nNodeOver );
-    PRT( "Time", clock() - clk );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyShow.c b/src/aig/ivy/ivyShow.c
deleted file mode 100644
index cd726e43..00000000
--- a/src/aig/ivy/ivyShow.c
+++ /dev/null
@@ -1,338 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyShow.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Visualization of HAIG.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyShow.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static void Ivy_WriteDotAig( Ivy_Man_t * pMan, char * pFileName, int fHaig, Vec_Ptr_t * vBold );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManShow( Ivy_Man_t * pMan, int fHaig, Vec_Ptr_t * vBold )
-{
-    extern void Abc_ShowFile( char * FileNameDot );
-    static Counter = 0;
-    char FileNameDot[200];
-    FILE * pFile;
-    // create the file name
-//    Ivy_ShowGetFileName( pMan->pName, FileNameDot );
-    sprintf( FileNameDot, "temp%02d.dot", Counter++ );
-    // check that the file can be opened
-    if ( (pFile = fopen( FileNameDot, "w" )) == NULL )
-    {
-        fprintf( stdout, "Cannot open the intermediate file \"%s\".\n", FileNameDot );
-        return;
-    }
-    fclose( pFile );
-    // generate the file
-    Ivy_WriteDotAig( pMan, FileNameDot, fHaig, vBold );
-    // visualize the file 
-    Abc_ShowFile( FileNameDot );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Writes the graph structure of AIG for DOT.]
-
-  Description [Useful for graph visualization using tools such as GraphViz: 
-  http://www.graphviz.org/]
-  
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_WriteDotAig( Ivy_Man_t * pMan, char * pFileName, int fHaig, Vec_Ptr_t * vBold )
-{
-    FILE * pFile;
-    Ivy_Obj_t * pNode, * pTemp, * pPrev;
-    int LevelMax, Level, i;
-
-    if ( Ivy_ManNodeNum(pMan) > 200 )
-    {
-        fprintf( stdout, "Cannot visualize AIG with more than 200 nodes.\n" );
-        return;
-    }
-    if ( (pFile = fopen( pFileName, "w" )) == NULL )
-    {
-        fprintf( stdout, "Cannot open the intermediate file \"%s\".\n", pFileName );
-        return;
-    }
-
-    // mark the nodes
-    if ( vBold )
-        Vec_PtrForEachEntry( vBold, pNode, i )
-            pNode->fMarkB = 1;
-
-    // compute levels
-    LevelMax = 1 + Ivy_ManSetLevels( pMan, fHaig );
-
-    // write the DOT header
-    fprintf( pFile, "# %s\n",  "AIG structure generated by IVY package" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "digraph AIG {\n" );
-    fprintf( pFile, "size = \"7.5,10\";\n" );
-//  fprintf( pFile, "ranksep = 0.5;\n" );
-//  fprintf( pFile, "nodesep = 0.5;\n" );
-    fprintf( pFile, "center = true;\n" );
-//  fprintf( pFile, "orientation = landscape;\n" );
-//  fprintf( pFile, "edge [fontsize = 10];\n" );
-//  fprintf( pFile, "edge [dir = none];\n" );
-    fprintf( pFile, "edge [dir = back];\n" );
-    fprintf( pFile, "\n" );
-
-    // labels on the left of the picture
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  node [shape = plaintext];\n" );
-    fprintf( pFile, "  edge [style = invis];\n" );
-    fprintf( pFile, "  LevelTitle1 [label=\"\"];\n" );
-    fprintf( pFile, "  LevelTitle2 [label=\"\"];\n" );
-    // generate node names with labels
-    for ( Level = LevelMax; Level >= 0; Level-- )
-    {
-        // the visible node name
-        fprintf( pFile, "  Level%d", Level );
-        fprintf( pFile, " [label = " );
-        // label name
-        fprintf( pFile, "\"" );
-        fprintf( pFile, "\"" );
-        fprintf( pFile, "];\n" );
-    }
-
-    // genetate the sequence of visible/invisible nodes to mark levels
-    fprintf( pFile, "  LevelTitle1 ->  LevelTitle2 ->" );
-    for ( Level = LevelMax; Level >= 0; Level-- )
-    {
-        // the visible node name
-        fprintf( pFile, "  Level%d",  Level );
-        // the connector
-        if ( Level != 0 )
-            fprintf( pFile, " ->" );
-        else
-            fprintf( pFile, ";" );
-    }
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate title box on top
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  rank = same;\n" );
-    fprintf( pFile, "  LevelTitle1;\n" );
-    fprintf( pFile, "  title1 [shape=plaintext,\n" );
-    fprintf( pFile, "          fontsize=20,\n" );
-    fprintf( pFile, "          fontname = \"Times-Roman\",\n" );
-    fprintf( pFile, "          label=\"" );
-    fprintf( pFile, "%s", "AIG structure visualized by ABC" );
-    fprintf( pFile, "\\n" );
-    fprintf( pFile, "Benchmark \\\"%s\\\". ", "aig" );
-    fprintf( pFile, "Time was %s. ",  Extra_TimeStamp() );
-    fprintf( pFile, "\"\n" );
-    fprintf( pFile, "         ];\n" );
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate statistics box
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  rank = same;\n" );
-    fprintf( pFile, "  LevelTitle2;\n" );
-    fprintf( pFile, "  title2 [shape=plaintext,\n" );
-    fprintf( pFile, "          fontsize=18,\n" );
-    fprintf( pFile, "          fontname = \"Times-Roman\",\n" );
-    fprintf( pFile, "          label=\"" );
-    fprintf( pFile, "The set contains %d logic nodes and spans %d levels.", Ivy_ManNodeNum(pMan), LevelMax );
-    fprintf( pFile, "\\n" );
-    fprintf( pFile, "\"\n" );
-    fprintf( pFile, "         ];\n" );
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate the COs
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  rank = same;\n" );
-    // the labeling node of this level
-    fprintf( pFile, "  Level%d;\n",  LevelMax );
-    // generate the CO nodes
-    Ivy_ManForEachCo( pMan, pNode, i )
-    {
-        if ( fHaig || pNode->pEquiv == NULL )
-            fprintf( pFile, "  Node%d%s [label = \"%d%s\"", pNode->Id, 
-                (Ivy_ObjIsLatch(pNode)? "_in":""), pNode->Id, (Ivy_ObjIsLatch(pNode)? "_in":"") );
-        else
-            fprintf( pFile, "  Node%d%s [label = \"%d%s(%d%s)\"", pNode->Id, 
-                (Ivy_ObjIsLatch(pNode)? "_in":""), pNode->Id, (Ivy_ObjIsLatch(pNode)? "_in":""), 
-                    Ivy_Regular(pNode->pEquiv)->Id, Ivy_IsComplement(pNode->pEquiv)? "\'":"" );
-        fprintf( pFile, ", shape = %s", (Ivy_ObjIsLatch(pNode)? "box":"invtriangle") );
-        fprintf( pFile, ", color = coral, fillcolor = coral" );
-        fprintf( pFile, "];\n" );
-    }
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate nodes of each rank
-    for ( Level = LevelMax - 1; Level > 0; Level-- )
-    {
-        fprintf( pFile, "{\n" );
-        fprintf( pFile, "  rank = same;\n" );
-        // the labeling node of this level
-        fprintf( pFile, "  Level%d;\n",  Level );
-        Ivy_ManForEachObj( pMan, pNode, i )
-        {
-            if ( (int)pNode->Level != Level )
-                continue;
-            if ( fHaig || pNode->pEquiv == NULL )
-                fprintf( pFile, "  Node%d [label = \"%d\"", pNode->Id, pNode->Id );
-            else 
-                fprintf( pFile, "  Node%d [label = \"%d(%d%s)\"", pNode->Id, pNode->Id, 
-                    Ivy_Regular(pNode->pEquiv)->Id, Ivy_IsComplement(pNode->pEquiv)? "\'":"" );
-            fprintf( pFile, ", shape = ellipse" );
-            if ( vBold && pNode->fMarkB )
-                fprintf( pFile, ", style = filled" );
-            fprintf( pFile, "];\n" );
-        }
-        fprintf( pFile, "}" );
-        fprintf( pFile, "\n" );
-        fprintf( pFile, "\n" );
-    }
-
-    // generate the CI nodes
-    fprintf( pFile, "{\n" );
-    fprintf( pFile, "  rank = same;\n" );
-    // the labeling node of this level
-    fprintf( pFile, "  Level%d;\n",  0 );
-    // generate constant node
-    if ( Ivy_ObjRefs(Ivy_ManConst1(pMan)) > 0 )
-    {
-        pNode = Ivy_ManConst1(pMan);
-        // check if the costant node is present
-        fprintf( pFile, "  Node%d [label = \"Const1\"", pNode->Id );
-        fprintf( pFile, ", shape = ellipse" );
-        fprintf( pFile, ", color = coral, fillcolor = coral" );
-        fprintf( pFile, "];\n" );
-    }
-    // generate the CI nodes
-    Ivy_ManForEachCi( pMan, pNode, i )
-    {
-        if ( fHaig || pNode->pEquiv == NULL )
-            fprintf( pFile, "  Node%d%s [label = \"%d%s\"", pNode->Id, 
-                (Ivy_ObjIsLatch(pNode)? "_out":""), pNode->Id, (Ivy_ObjIsLatch(pNode)? "_out":"") );
-        else
-            fprintf( pFile, "  Node%d%s [label = \"%d%s(%d%s)\"", pNode->Id, 
-                (Ivy_ObjIsLatch(pNode)? "_out":""), pNode->Id, (Ivy_ObjIsLatch(pNode)? "_out":""), 
-                    Ivy_Regular(pNode->pEquiv)->Id, Ivy_IsComplement(pNode->pEquiv)? "\'":"" );
-        fprintf( pFile, ", shape = %s", (Ivy_ObjIsLatch(pNode)? "box":"triangle") );
-        fprintf( pFile, ", color = coral, fillcolor = coral" );
-        fprintf( pFile, "];\n" );
-    }
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-
-    // generate invisible edges from the square down
-    fprintf( pFile, "title1 -> title2 [style = invis];\n" );
-    Ivy_ManForEachCo( pMan, pNode, i )
-        fprintf( pFile, "title2 -> Node%d%s [style = invis];\n", pNode->Id, (Ivy_ObjIsLatch(pNode)? "_in":"") );
-
-    // generate edges
-    Ivy_ManForEachObj( pMan, pNode, i )
-    {
-        if ( !Ivy_ObjIsNode(pNode) && !Ivy_ObjIsCo(pNode) && !Ivy_ObjIsBuf(pNode) )
-            continue;
-        // generate the edge from this node to the next
-        fprintf( pFile, "Node%d%s",  pNode->Id, (Ivy_ObjIsLatch(pNode)? "_in":"") );
-        fprintf( pFile, " -> " );
-        fprintf( pFile, "Node%d%s",  Ivy_ObjFaninId0(pNode), (Ivy_ObjIsLatch(Ivy_ObjFanin0(pNode))? "_out":"") );
-        fprintf( pFile, " [" );
-        fprintf( pFile, "style = %s", Ivy_ObjFaninC0(pNode)? "dotted" : "bold" );
-//        if ( Ivy_NtkIsSeq(pNode->pMan) && Seq_ObjFaninL0(pNode) > 0 )
-//        fprintf( pFile, ", label = \"%s\"", Seq_ObjFaninGetInitPrintable(pNode,0) );
-        fprintf( pFile, "]" );
-        fprintf( pFile, ";\n" );
-        if ( !Ivy_ObjIsNode(pNode) )
-            continue;
-        // generate the edge from this node to the next
-        fprintf( pFile, "Node%d",  pNode->Id );
-        fprintf( pFile, " -> " );
-        fprintf( pFile, "Node%d%s",  Ivy_ObjFaninId1(pNode), (Ivy_ObjIsLatch(Ivy_ObjFanin1(pNode))? "_out":"") );
-        fprintf( pFile, " [" );
-        fprintf( pFile, "style = %s", Ivy_ObjFaninC1(pNode)? "dotted" : "bold" );
-//        if ( Ivy_NtkIsSeq(pNode->pMan) && Seq_ObjFaninL1(pNode) > 0 )
-//        fprintf( pFile, ", label = \"%s\"", Seq_ObjFaninGetInitPrintable(pNode,1) );
-        fprintf( pFile, "]" );
-        fprintf( pFile, ";\n" );
-        // generate the edges between the equivalent nodes
-        if ( fHaig && pNode->pEquiv && Ivy_ObjRefs(pNode) > 0 )
-        {
-            pPrev = pNode;
-            for ( pTemp = pNode->pEquiv; pTemp != pNode; pTemp = Ivy_Regular(pTemp->pEquiv) )
-            {
-                fprintf( pFile, "Node%d",  pPrev->Id );
-                fprintf( pFile, " -> " );
-                fprintf( pFile, "Node%d",  pTemp->Id );
-                fprintf( pFile, " [style = %s]", Ivy_IsComplement(pTemp->pEquiv)? "dotted" : "bold" );
-                fprintf( pFile, ";\n" );
-                pPrev = pTemp;
-            }
-            // connect the last node with the first
-            fprintf( pFile, "Node%d",  pPrev->Id );
-            fprintf( pFile, " -> " );
-            fprintf( pFile, "Node%d",  pNode->Id );
-            fprintf( pFile, " [style = %s]", Ivy_IsComplement(pPrev->pEquiv)? "dotted" : "bold" );
-            fprintf( pFile, ";\n" );
-        }
-    }
-
-    fprintf( pFile, "}" );
-    fprintf( pFile, "\n" );
-    fprintf( pFile, "\n" );
-    fclose( pFile );
-
-    // unmark nodes
-    if ( vBold )
-        Vec_PtrForEachEntry( vBold, pNode, i )
-            pNode->fMarkB = 0;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyTable.c b/src/aig/ivy/ivyTable.c
deleted file mode 100644
index 2ac0ae49..00000000
--- a/src/aig/ivy/ivyTable.c
+++ /dev/null
@@ -1,301 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyTable.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Structural hashing table.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006. ]
-
-  Revision    [$Id: ivyTable.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// hashing the node
-static unsigned Ivy_Hash( Ivy_Obj_t * pObj, int TableSize ) 
-{
-    unsigned Key = Ivy_ObjIsExor(pObj) * 1699;
-    Key ^= Ivy_ObjFaninId0(pObj) * 7937;
-    Key ^= Ivy_ObjFaninId1(pObj) * 2971;
-    Key ^= Ivy_ObjFaninC0(pObj) * 911;
-    Key ^= Ivy_ObjFaninC1(pObj) * 353;
-    Key ^= Ivy_ObjInit(pObj) * 911;
-    return Key % TableSize;
-}
-
-// returns the place where this node is stored (or should be stored)
-static int * Ivy_TableFind( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    int i;
-    assert( Ivy_ObjIsHash(pObj) );
-    for ( i = Ivy_Hash(pObj, p->nTableSize); p->pTable[i]; i = (i+1) % p->nTableSize )
-        if ( p->pTable[i] == pObj->Id )
-            break;
-    return p->pTable + i;
-}
-
-static void         Ivy_TableResize( Ivy_Man_t * p );
-static unsigned int Cudd_PrimeAig( unsigned int  p );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
- 
-/**Function*************************************************************
-
-  Synopsis    [Checks if node with the given attributes is in the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_TableLookup( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pEntry;
-    int i;
-    assert( !Ivy_IsComplement(pObj) );
-    if ( !Ivy_ObjIsHash(pObj) )
-        return NULL;
-    assert( Ivy_ObjIsLatch(pObj) || Ivy_ObjFaninId0(pObj) > 0 );
-    assert( Ivy_ObjFaninId1(pObj) == 0 || Ivy_ObjFaninId0(pObj) < Ivy_ObjFaninId1(pObj) );
-    if ( Ivy_ObjFanin0(pObj)->nRefs == 0 || (Ivy_ObjChild1(pObj) && Ivy_ObjFanin1(pObj)->nRefs == 0) )
-        return NULL;
-    for ( i = Ivy_Hash(pObj, p->nTableSize); p->pTable[i]; i = (i+1) % p->nTableSize )
-    {
-        pEntry = Ivy_ManObj( p, p->pTable[i] );
-        if ( Ivy_ObjChild0(pEntry) == Ivy_ObjChild0(pObj) && 
-             Ivy_ObjChild1(pEntry) == Ivy_ObjChild1(pObj) && 
-             Ivy_ObjInit(pEntry) == Ivy_ObjInit(pObj) && 
-             Ivy_ObjType(pEntry) == Ivy_ObjType(pObj) )
-            return pEntry;
-    }
-    return NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds the node to the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TableInsert( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    int * pPlace;
-    assert( !Ivy_IsComplement(pObj) );
-    if ( !Ivy_ObjIsHash(pObj) )
-        return;
-    if ( (pObj->Id & 63) == 0 )
-    {
-        if ( p->nTableSize < 2 * Ivy_ManHashObjNum(p) )
-            Ivy_TableResize( p );
-    }
-    pPlace = Ivy_TableFind( p, pObj );
-    assert( *pPlace == 0 );
-    *pPlace = pObj->Id;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deletes the node from the hash table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TableDelete( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pEntry;
-    int i, * pPlace;
-    assert( !Ivy_IsComplement(pObj) );
-    if ( !Ivy_ObjIsHash(pObj) )
-        return;
-    pPlace = Ivy_TableFind( p, pObj );
-    assert( *pPlace == pObj->Id ); // node should be in the table
-    *pPlace = 0;
-    // rehash the adjacent entries
-    i = pPlace - p->pTable;
-    for ( i = (i+1) % p->nTableSize; p->pTable[i]; i = (i+1) % p->nTableSize )
-    {
-        pEntry = Ivy_ManObj( p, p->pTable[i] );
-        p->pTable[i] = 0;
-        Ivy_TableInsert( p, pEntry );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Updates the table to point to the new node.]
-
-  Description [If the old node (pObj) is in the table, updates the table
-  to point to an object with different ID (ObjIdNew). The table should
-  not contain an object with ObjIdNew (this is currently not checked).]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TableUpdate( Ivy_Man_t * p, Ivy_Obj_t * pObj, int ObjIdNew )
-{
-    int * pPlace;
-    assert( !Ivy_IsComplement(pObj) );
-    if ( !Ivy_ObjIsHash(pObj) )
-        return;
-    pPlace = Ivy_TableFind( p, pObj );
-    assert( *pPlace == pObj->Id ); // node should be in the table
-    *pPlace = ObjIdNew; 
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Count the number of nodes in the table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_TableCountEntries( Ivy_Man_t * p )
-{
-    int i, Counter = 0;
-    for ( i = 0; i < p->nTableSize; i++ )
-        Counter += (p->pTable[i] != 0);
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Resizes the table.]
-
-  Description [Typically this procedure should not be called.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_TableResize( Ivy_Man_t * p )
-{
-    int * pTableOld, * pPlace;
-    int nTableSizeOld, Counter, nEntries, e, clk;
-clk = clock();
-    // save the old table
-    pTableOld = p->pTable;
-    nTableSizeOld = p->nTableSize;
-    // get the new table
-    p->nTableSize = Cudd_PrimeAig( 5 * Ivy_ManHashObjNum(p) ); 
-    p->pTable = ALLOC( int, p->nTableSize );
-    memset( p->pTable, 0, sizeof(int) * p->nTableSize );
-    // rehash the entries from the old table
-    Counter = 0;
-    for ( e = 0; e < nTableSizeOld; e++ )
-    {
-        if ( pTableOld[e] == 0 )
-            continue;
-        Counter++;
-        // get the place where this entry goes in the table table
-        pPlace = Ivy_TableFind( p, Ivy_ManObj(p, pTableOld[e]) );
-        assert( *pPlace == 0 ); // should not be in the table
-        *pPlace = pTableOld[e];
-    }
-    nEntries = Ivy_ManHashObjNum(p);
-//    assert( Counter == nEntries );
-//    printf( "Increasing the structural table size from %6d to %6d. ", nTableSizeOld, p->nTableSize );
-//    PRT( "Time", clock() - clk );
-    // replace the table and the parameters
-    free( pTableOld );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Profiles the hash table.]
-
-  Description []
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Ivy_TableProfile( Ivy_Man_t * p )
-{
-    int i, Counter = 0;
-    for ( i = 0; i < p->nTableSize; i++ )
-    {
-        if ( p->pTable[i] )
-            Counter++;
-        else if ( Counter )
-        {
-            printf( "%d ", Counter );
-            Counter = 0;
-        }
-    }
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Returns the next prime &gt;= p.]
-
-  Description [Copied from CUDD, for stand-aloneness.]
-
-  SideEffects [None]
-
-  SeeAlso     []
-
-******************************************************************************/
-unsigned int Cudd_PrimeAig( unsigned int  p)
-{
-    int i,pn;
-
-    p--;
-    do {
-        p++;
-        if (p&1) {
-        pn = 1;
-        i = 3;
-        while ((unsigned) (i * i) <= p) {
-        if (p % i == 0) {
-            pn = 0;
-            break;
-        }
-        i += 2;
-        }
-    } else {
-        pn = 0;
-    }
-    } while (!pn);
-    return(p);
-
-} /* end of Cudd_Prime */
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivyUtil.c b/src/aig/ivy/ivyUtil.c
deleted file mode 100644
index ab62a276..00000000
--- a/src/aig/ivy/ivyUtil.c
+++ /dev/null
@@ -1,818 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivyUtil.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    [Various procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivyUtil.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Increments the current traversal ID of the network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManIncrementTravId( Ivy_Man_t * p )
-{
-    if ( p->nTravIds >= (1<<30)-1 - 1000 )
-        Ivy_ManCleanTravId( p );
-    p->nTravIds++;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sets the DFS ordering of the nodes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManCleanTravId( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    p->nTravIds = 1;
-    Ivy_ManForEachObj( p, pObj, i )
-        pObj->TravId = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManCollectCut_rec( Ivy_Man_t * p, Ivy_Obj_t * pNode, Vec_Int_t * vNodes )
-{
-    if ( pNode->fMarkA )
-        return;
-    pNode->fMarkA = 1;
-    assert( Ivy_ObjIsAnd(pNode) || Ivy_ObjIsExor(pNode) );
-    Ivy_ManCollectCut_rec( p, Ivy_ObjFanin0(pNode), vNodes );
-    Ivy_ManCollectCut_rec( p, Ivy_ObjFanin1(pNode), vNodes );
-    Vec_IntPush( vNodes, pNode->Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description [Does not modify the array of leaves. Uses array vTruth to store 
-  temporary truth tables. The returned pointer should be used immediately.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManCollectCut( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Vec_Int_t * vLeaves, Vec_Int_t * vNodes )
-{
-    int i, Leaf;
-    // collect and mark the leaves
-    Vec_IntClear( vNodes );
-    Vec_IntForEachEntry( vLeaves, Leaf, i )
-    {
-        Vec_IntPush( vNodes, Leaf );
-        Ivy_ManObj(p, Leaf)->fMarkA = 1;
-    }
-    // collect and mark the nodes
-    Ivy_ManCollectCut_rec( p, pRoot, vNodes );
-    // clean the nodes
-    Vec_IntForEachEntry( vNodes, Leaf, i )
-        Ivy_ManObj(p, Leaf)->fMarkA = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the pointer to the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Ivy_ObjGetTruthStore( int ObjNum, Vec_Int_t * vTruth )
-{
-   return ((unsigned *)Vec_IntArray(vTruth)) + 8 * ObjNum;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManCutTruthOne( Ivy_Man_t * p, Ivy_Obj_t * pNode, Vec_Int_t * vTruth, int nWords )
-{
-    unsigned * pTruth, * pTruth0, * pTruth1;
-    int i;
-    pTruth  = Ivy_ObjGetTruthStore( pNode->TravId, vTruth );
-    pTruth0 = Ivy_ObjGetTruthStore( Ivy_ObjFanin0(pNode)->TravId, vTruth );
-    pTruth1 = Ivy_ObjGetTruthStore( Ivy_ObjFanin1(pNode)->TravId, vTruth );
-    if ( Ivy_ObjIsExor(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = pTruth0[i] ^ pTruth1[i];
-    else if ( !Ivy_ObjFaninC0(pNode) && !Ivy_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = pTruth0[i] & pTruth1[i];
-    else if ( !Ivy_ObjFaninC0(pNode) && Ivy_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = pTruth0[i] & ~pTruth1[i];
-    else if ( Ivy_ObjFaninC0(pNode) && !Ivy_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ~pTruth0[i] & pTruth1[i];
-    else // if ( Ivy_ObjFaninC0(pNode) && Ivy_ObjFaninC1(pNode) )
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ~pTruth0[i] & ~pTruth1[i];
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes truth table of the cut.]
-
-  Description [Does not modify the array of leaves. Uses array vTruth to store 
-  temporary truth tables. The returned pointer should be used immediately.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Ivy_ManCutTruth( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Vec_Int_t * vLeaves, Vec_Int_t * vNodes, Vec_Int_t * vTruth )
-{
-    static unsigned uTruths[8][8] = { // elementary truth tables
-        { 0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA,0xAAAAAAAA },
-        { 0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC,0xCCCCCCCC },
-        { 0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0,0xF0F0F0F0 },
-        { 0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00,0xFF00FF00 },
-        { 0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000,0xFFFF0000 }, 
-        { 0x00000000,0xFFFFFFFF,0x00000000,0xFFFFFFFF,0x00000000,0xFFFFFFFF,0x00000000,0xFFFFFFFF }, 
-        { 0x00000000,0x00000000,0xFFFFFFFF,0xFFFFFFFF,0x00000000,0x00000000,0xFFFFFFFF,0xFFFFFFFF }, 
-        { 0x00000000,0x00000000,0x00000000,0x00000000,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF } 
-    };
-    int i, Leaf;
-    // collect the cut
-    Ivy_ManCollectCut( p, pRoot, vLeaves, vNodes );
-    // set the node numbers
-    Vec_IntForEachEntry( vNodes, Leaf, i )
-        Ivy_ManObj(p, Leaf)->TravId = i;
-    // alloc enough memory
-    Vec_IntClear( vTruth );
-    Vec_IntGrow( vTruth, 8 * Vec_IntSize(vNodes) );
-    // set the elementary truth tables
-    Vec_IntForEachEntry( vLeaves, Leaf, i )
-        memcpy( Ivy_ObjGetTruthStore(i, vTruth), uTruths[i], 8 * sizeof(unsigned) );
-    // compute truths for other nodes
-    Vec_IntForEachEntryStart( vNodes, Leaf, i, Vec_IntSize(vLeaves) )
-        Ivy_ManCutTruthOne( p, Ivy_ManObj(p, Leaf), vTruth, 8 );
-    return Ivy_ObjGetTruthStore( pRoot->TravId, vTruth );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collect the latches.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Int_t * Ivy_ManLatches( Ivy_Man_t * p )
-{
-    Vec_Int_t * vLatches;
-    Ivy_Obj_t * pObj;
-    int i;
-    vLatches = Vec_IntAlloc( Ivy_ManLatchNum(p) );
-    Ivy_ManForEachLatch( p, pObj, i )
-        Vec_IntPush( vLatches, pObj->Id );
-    return vLatches;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collect the latches.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManLevels( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i, LevelMax = 0;
-    Ivy_ManForEachPo( p, pObj, i )
-        LevelMax = IVY_MAX( LevelMax, (int)Ivy_ObjFanin0(pObj)->Level );
-    return LevelMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collect the latches.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ManResetLevels_rec( Ivy_Obj_t * pObj )
-{
-    if ( pObj->Level || Ivy_ObjIsCi(pObj) || Ivy_ObjIsConst1(pObj) )
-        return pObj->Level;
-    if ( Ivy_ObjIsBuf(pObj) )
-        return pObj->Level = Ivy_ManResetLevels_rec( Ivy_ObjFanin0(pObj) );
-    assert( Ivy_ObjIsNode(pObj) );
-    Ivy_ManResetLevels_rec( Ivy_ObjFanin0(pObj) );
-    Ivy_ManResetLevels_rec( Ivy_ObjFanin1(pObj) );
-    return pObj->Level = Ivy_ObjLevelNew( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Collect the latches.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManResetLevels( Ivy_Man_t * p )
-{
-    Ivy_Obj_t * pObj;
-    int i;
-    Ivy_ManForEachObj( p, pObj, i )
-        pObj->Level = 0;
-    Ivy_ManForEachCo( p, pObj, i )
-        Ivy_ManResetLevels_rec( Ivy_ObjFanin0(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [References/references the node and returns MFFC size.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ObjRefDeref( Ivy_Man_t * p, Ivy_Obj_t * pNode, int fReference, int fLabel )
-{
-    Ivy_Obj_t * pNode0, * pNode1;
-    int Counter;
-    // label visited nodes
-    if ( fLabel )
-        Ivy_ObjSetTravIdCurrent( p, pNode );
-    // skip the CI
-    if ( Ivy_ObjIsPi(pNode) )
-        return 0;
-    assert( Ivy_ObjIsNode(pNode) || Ivy_ObjIsBuf(pNode) || Ivy_ObjIsLatch(pNode) );
-    // process the internal node
-    pNode0 = Ivy_ObjFanin0(pNode);
-    pNode1 = Ivy_ObjFanin1(pNode);
-    Counter = Ivy_ObjIsNode(pNode);
-    if ( fReference )
-    {
-        if ( pNode0->nRefs++ == 0 )
-            Counter += Ivy_ObjRefDeref( p, pNode0, fReference, fLabel );
-        if ( pNode1 && pNode1->nRefs++ == 0 )
-            Counter += Ivy_ObjRefDeref( p, pNode1, fReference, fLabel );
-    }
-    else
-    {
-        assert( pNode0->nRefs > 0 );
-        assert( pNode1 == NULL || pNode1->nRefs > 0 );
-        if ( --pNode0->nRefs == 0 )
-            Counter += Ivy_ObjRefDeref( p, pNode0, fReference, fLabel );
-        if ( pNode1 && --pNode1->nRefs == 0 )
-            Counter += Ivy_ObjRefDeref( p, pNode1, fReference, fLabel );
-    }
-    return Counter;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Labels MFFC with the current label.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ObjMffcLabel( Ivy_Man_t * p, Ivy_Obj_t * pNode )
-{
-    int nConeSize1, nConeSize2;
-    assert( !Ivy_IsComplement( pNode ) );
-    assert( Ivy_ObjIsNode( pNode ) );
-    nConeSize1 = Ivy_ObjRefDeref( p, pNode, 0, 1 ); // dereference
-    nConeSize2 = Ivy_ObjRefDeref( p, pNode, 1, 0 ); // reference
-    assert( nConeSize1 == nConeSize2 );
-    assert( nConeSize1 > 0 );
-    return nConeSize1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recursively updates fanout levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjUpdateLevel_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pFanout;
-    Vec_Ptr_t * vFanouts;
-    int i, LevelNew;
-    assert( p->fFanout );
-    assert( Ivy_ObjIsNode(pObj) );
-    vFanouts = Vec_PtrAlloc( 10 );
-    Ivy_ObjForEachFanout( p, pObj, vFanouts, pFanout, i )
-    {
-        if ( Ivy_ObjIsCo(pFanout) )
-        {
-//            assert( (int)Ivy_ObjFanin0(pFanout)->Level <= p->nLevelMax );
-            continue;
-        }
-        LevelNew = Ivy_ObjLevelNew( pFanout );
-        if ( (int)pFanout->Level == LevelNew )
-            continue;
-        pFanout->Level = LevelNew;
-        Ivy_ObjUpdateLevel_rec( p, pFanout );
-    }
-    Vec_PtrFree( vFanouts );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compute the new required level.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ObjLevelRNew( Ivy_Man_t * p, Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pFanout;
-    Vec_Ptr_t * vFanouts;
-    int i, Required, LevelNew = 1000000;
-    assert( p->fFanout && p->vRequired );
-    vFanouts = Vec_PtrAlloc( 10 );
-    Ivy_ObjForEachFanout( p, pObj, vFanouts, pFanout, i )
-    {
-        Required = Vec_IntEntry(p->vRequired, pFanout->Id);
-        LevelNew = IVY_MIN( LevelNew, Required );
-    }
-    Vec_PtrFree( vFanouts );
-    return LevelNew - 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recursively updates fanout levels.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjUpdateLevelR_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj, int ReqNew )
-{
-    Ivy_Obj_t * pFanin;
-    if ( Ivy_ObjIsConst1(pObj) || Ivy_ObjIsCi(pObj) )
-        return;
-    assert( Ivy_ObjIsNode(pObj) || Ivy_ObjIsBuf(pObj) );
-    // process the first fanin
-    pFanin = Ivy_ObjFanin0(pObj);
-    if ( Vec_IntEntry(p->vRequired, pFanin->Id) > ReqNew - 1 )
-    {
-        Vec_IntWriteEntry( p->vRequired, pFanin->Id, ReqNew - 1 );
-        Ivy_ObjUpdateLevelR_rec( p, pFanin, ReqNew - 1 );
-    }
-    if ( Ivy_ObjIsBuf(pObj) )
-        return;
-    // process the second fanin
-    pFanin = Ivy_ObjFanin1(pObj);
-    if ( Vec_IntEntry(p->vRequired, pFanin->Id) > ReqNew - 1 )
-    {
-        Vec_IntWriteEntry( p->vRequired, pFanin->Id, ReqNew - 1 );
-        Ivy_ObjUpdateLevelR_rec( p, pFanin, ReqNew - 1 );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the node is the root of MUX or EXOR/NEXOR.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_ObjIsMuxType( Ivy_Obj_t * pNode )
-{
-    Ivy_Obj_t * pNode0, * pNode1;
-    // check that the node is regular
-    assert( !Ivy_IsComplement(pNode) );
-    // if the node is not AND, this is not MUX
-    if ( !Ivy_ObjIsAnd(pNode) )
-        return 0;
-    // if the children are not complemented, this is not MUX
-    if ( !Ivy_ObjFaninC0(pNode) || !Ivy_ObjFaninC1(pNode) )
-        return 0;
-    // get children
-    pNode0 = Ivy_ObjFanin0(pNode);
-    pNode1 = Ivy_ObjFanin1(pNode);
-    // if the children are not ANDs, this is not MUX
-    if ( !Ivy_ObjIsAnd(pNode0) || !Ivy_ObjIsAnd(pNode1) )
-        return 0;
-    // otherwise the node is MUX iff it has a pair of equal grandchildren
-    return (Ivy_ObjFaninId0(pNode0) == Ivy_ObjFaninId0(pNode1) && (Ivy_ObjFaninC0(pNode0) ^ Ivy_ObjFaninC0(pNode1))) || 
-           (Ivy_ObjFaninId0(pNode0) == Ivy_ObjFaninId1(pNode1) && (Ivy_ObjFaninC0(pNode0) ^ Ivy_ObjFaninC1(pNode1))) ||
-           (Ivy_ObjFaninId1(pNode0) == Ivy_ObjFaninId0(pNode1) && (Ivy_ObjFaninC1(pNode0) ^ Ivy_ObjFaninC0(pNode1))) ||
-           (Ivy_ObjFaninId1(pNode0) == Ivy_ObjFaninId1(pNode1) && (Ivy_ObjFaninC1(pNode0) ^ Ivy_ObjFaninC1(pNode1)));
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recognizes what nodes are control and data inputs of a MUX.]
-
-  Description [If the node is a MUX, returns the control variable C.
-  Assigns nodes T and E to be the then and else variables of the MUX. 
-  Node C is never complemented. Nodes T and E can be complemented.
-  This function also recognizes EXOR/NEXOR gates as MUXes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_ObjRecognizeMux( Ivy_Obj_t * pNode, Ivy_Obj_t ** ppNodeT, Ivy_Obj_t ** ppNodeE )
-{
-    Ivy_Obj_t * pNode0, * pNode1;
-    assert( !Ivy_IsComplement(pNode) );
-    assert( Ivy_ObjIsMuxType(pNode) );
-    // get children
-    pNode0 = Ivy_ObjFanin0(pNode);
-    pNode1 = Ivy_ObjFanin1(pNode);
-    // find the control variable
-//    if ( pNode1->p1 == Fraig_Not(pNode2->p1) )
-    if ( Ivy_ObjFaninId0(pNode0) == Ivy_ObjFaninId0(pNode1) && (Ivy_ObjFaninC0(pNode0) ^ Ivy_ObjFaninC0(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p1) )
-        if ( Ivy_ObjFaninC0(pNode0) )
-        { // pNode2->p1 is positive phase of C
-            *ppNodeT = Ivy_Not(Ivy_ObjChild1(pNode1));//pNode2->p2);
-            *ppNodeE = Ivy_Not(Ivy_ObjChild1(pNode0));//pNode1->p2);
-            return Ivy_ObjChild0(pNode1);//pNode2->p1;
-        }
-        else
-        { // pNode1->p1 is positive phase of C
-            *ppNodeT = Ivy_Not(Ivy_ObjChild1(pNode0));//pNode1->p2);
-            *ppNodeE = Ivy_Not(Ivy_ObjChild1(pNode1));//pNode2->p2);
-            return Ivy_ObjChild0(pNode0);//pNode1->p1;
-        }
-    }
-//    else if ( pNode1->p1 == Fraig_Not(pNode2->p2) )
-    else if ( Ivy_ObjFaninId0(pNode0) == Ivy_ObjFaninId1(pNode1) && (Ivy_ObjFaninC0(pNode0) ^ Ivy_ObjFaninC1(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p1) )
-        if ( Ivy_ObjFaninC0(pNode0) )
-        { // pNode2->p2 is positive phase of C
-            *ppNodeT = Ivy_Not(Ivy_ObjChild0(pNode1));//pNode2->p1);
-            *ppNodeE = Ivy_Not(Ivy_ObjChild1(pNode0));//pNode1->p2);
-            return Ivy_ObjChild1(pNode1);//pNode2->p2;
-        }
-        else
-        { // pNode1->p1 is positive phase of C
-            *ppNodeT = Ivy_Not(Ivy_ObjChild1(pNode0));//pNode1->p2);
-            *ppNodeE = Ivy_Not(Ivy_ObjChild0(pNode1));//pNode2->p1);
-            return Ivy_ObjChild0(pNode0);//pNode1->p1;
-        }
-    }
-//    else if ( pNode1->p2 == Fraig_Not(pNode2->p1) )
-    else if ( Ivy_ObjFaninId1(pNode0) == Ivy_ObjFaninId0(pNode1) && (Ivy_ObjFaninC1(pNode0) ^ Ivy_ObjFaninC0(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p2) )
-        if ( Ivy_ObjFaninC1(pNode0) )
-        { // pNode2->p1 is positive phase of C
-            *ppNodeT = Ivy_Not(Ivy_ObjChild1(pNode1));//pNode2->p2);
-            *ppNodeE = Ivy_Not(Ivy_ObjChild0(pNode0));//pNode1->p1);
-            return Ivy_ObjChild0(pNode1);//pNode2->p1;
-        }
-        else
-        { // pNode1->p2 is positive phase of C
-            *ppNodeT = Ivy_Not(Ivy_ObjChild0(pNode0));//pNode1->p1);
-            *ppNodeE = Ivy_Not(Ivy_ObjChild1(pNode1));//pNode2->p2);
-            return Ivy_ObjChild1(pNode0);//pNode1->p2;
-        }
-    }
-//    else if ( pNode1->p2 == Fraig_Not(pNode2->p2) )
-    else if ( Ivy_ObjFaninId1(pNode0) == Ivy_ObjFaninId1(pNode1) && (Ivy_ObjFaninC1(pNode0) ^ Ivy_ObjFaninC1(pNode1)) )
-    {
-//        if ( Fraig_IsComplement(pNode1->p2) )
-        if ( Ivy_ObjFaninC1(pNode0) )
-        { // pNode2->p2 is positive phase of C
-            *ppNodeT = Ivy_Not(Ivy_ObjChild0(pNode1));//pNode2->p1);
-            *ppNodeE = Ivy_Not(Ivy_ObjChild0(pNode0));//pNode1->p1);
-            return Ivy_ObjChild1(pNode1);//pNode2->p2;
-        }
-        else
-        { // pNode1->p2 is positive phase of C
-            *ppNodeT = Ivy_Not(Ivy_ObjChild0(pNode0));//pNode1->p1);
-            *ppNodeE = Ivy_Not(Ivy_ObjChild0(pNode1));//pNode2->p1);
-            return Ivy_ObjChild1(pNode0);//pNode1->p2;
-        }
-    }
-    assert( 0 ); // this is not MUX
-    return NULL;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the real fanin.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Ivy_Obj_t * Ivy_ObjReal( Ivy_Obj_t * pObj )
-{
-    Ivy_Obj_t * pFanin;
-    if ( pObj == NULL || !Ivy_ObjIsBuf( Ivy_Regular(pObj) ) )
-        return pObj;
-    pFanin = Ivy_ObjReal( Ivy_ObjChild0(Ivy_Regular(pObj)) );
-    return Ivy_NotCond( pFanin, Ivy_IsComplement(pObj) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints node in HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ObjPrintVerbose( Ivy_Man_t * p, Ivy_Obj_t * pObj, int fHaig )
-{
-    Ivy_Obj_t * pTemp;
-    int fShowFanouts = 0;
-    assert( !Ivy_IsComplement(pObj) );
-    printf( "Node %5d : ", Ivy_ObjId(pObj) );
-    if ( Ivy_ObjIsConst1(pObj) )
-        printf( "constant 1" );
-    else if ( Ivy_ObjIsPi(pObj) )
-        printf( "PI" );
-    else if ( Ivy_ObjIsPo(pObj) )
-        printf( "PO" );
-    else if ( Ivy_ObjIsLatch(pObj) )
-        printf( "latch (%d%s)", Ivy_ObjFanin0(pObj)->Id, (Ivy_ObjFaninC0(pObj)? "\'" : " ") );
-    else if ( Ivy_ObjIsBuf(pObj) )
-        printf( "buffer (%d%s)", Ivy_ObjFanin0(pObj)->Id, (Ivy_ObjFaninC0(pObj)? "\'" : " ") );
-    else
-        printf( "AND( %5d%s, %5d%s )", 
-            Ivy_ObjFanin0(pObj)->Id, (Ivy_ObjFaninC0(pObj)? "\'" : " "), 
-            Ivy_ObjFanin1(pObj)->Id, (Ivy_ObjFaninC1(pObj)? "\'" : " ") );
-    printf( " (refs = %3d)", Ivy_ObjRefs(pObj) );
-    if ( fShowFanouts )
-    {
-        Vec_Ptr_t * vFanouts;
-        Ivy_Obj_t * pFanout;
-        int i;
-        vFanouts = Vec_PtrAlloc( 10 );
-        printf( "\nFanouts:\n" );
-        Ivy_ObjForEachFanout( p, pObj, vFanouts, pFanout, i )
-        {
-            printf( "    " );
-            printf( "Node %5d : ", Ivy_ObjId(pFanout) );
-            if ( Ivy_ObjIsPo(pFanout) )
-                printf( "PO" );
-            else if ( Ivy_ObjIsLatch(pFanout) )
-                printf( "latch (%d%s)", Ivy_ObjFanin0(pFanout)->Id, (Ivy_ObjFaninC0(pFanout)? "\'" : " ") );
-            else if ( Ivy_ObjIsBuf(pFanout) )
-                printf( "buffer (%d%s)", Ivy_ObjFanin0(pFanout)->Id, (Ivy_ObjFaninC0(pFanout)? "\'" : " ") );
-            else
-                printf( "AND( %5d%s, %5d%s )", 
-                    Ivy_ObjFanin0(pFanout)->Id, (Ivy_ObjFaninC0(pFanout)? "\'" : " "), 
-                    Ivy_ObjFanin1(pFanout)->Id, (Ivy_ObjFaninC1(pFanout)? "\'" : " ") );
-            printf( "\n" );
-        }
-        Vec_PtrFree( vFanouts );
-        return;
-    }
-    if ( !fHaig )
-    {
-        if ( pObj->pEquiv == NULL )
-            printf( " HAIG node not given" );
-        else
-            printf( " HAIG node = %d%s", Ivy_Regular(pObj->pEquiv)->Id, (Ivy_IsComplement(pObj->pEquiv)? "\'" : " ") );
-        return;
-    }
-    if ( pObj->pEquiv == NULL )
-        return;
-    // there are choices
-    if ( Ivy_ObjRefs(pObj) > 0 )
-    {
-        // print equivalence class
-        printf( "  { %5d ", pObj->Id );
-        assert( !Ivy_IsComplement(pObj->pEquiv) );
-        for ( pTemp = pObj->pEquiv; pTemp != pObj; pTemp = Ivy_Regular(pTemp->pEquiv) )
-            printf( " %5d%s", pTemp->Id, (Ivy_IsComplement(pTemp->pEquiv)? "\'" : " ") );
-        printf( " }" );
-        return;
-    }
-    // this is a secondary node
-    for ( pTemp = Ivy_Regular(pObj->pEquiv); Ivy_ObjRefs(pTemp) == 0; pTemp = Ivy_Regular(pTemp->pEquiv) );
-    assert( Ivy_ObjRefs(pTemp) > 0 );
-    printf( "  class of %d", pTemp->Id );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints node in HAIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Ivy_ManPrintVerbose( Ivy_Man_t * p, int fHaig )
-{
-    Vec_Int_t * vNodes;
-    Ivy_Obj_t * pObj;
-    int i;
-    printf( "PIs: " );
-    Ivy_ManForEachPi( p, pObj, i )
-        printf( " %d", pObj->Id );
-    printf( "\n" );
-    printf( "POs: " );
-    Ivy_ManForEachPo( p, pObj, i )
-        printf( " %d", pObj->Id );
-    printf( "\n" );
-    printf( "Latches: " );
-    Ivy_ManForEachLatch( p, pObj, i )
-        printf( " %d=%d%s", pObj->Id, Ivy_ObjFanin0(pObj)->Id, (Ivy_ObjFaninC0(pObj)? "\'" : " ") );
-    printf( "\n" );
-    vNodes = Ivy_ManDfsSeq( p, NULL );
-    Ivy_ManForEachNodeVec( p, vNodes, pObj, i )
-        Ivy_ObjPrintVerbose( p, pObj, fHaig ), printf( "\n" );
-    printf( "\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs incremental rewriting of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_CutTruthPrint2( Ivy_Man_t * p, Ivy_Cut_t * pCut, unsigned uTruth )
-{
-    int i;
-    printf( "Trying cut : {" );
-    for ( i = 0; i < pCut->nSize; i++ )
-        printf( " %6d(%d)", Ivy_LeafId(pCut->pArray[i]), Ivy_LeafLat(pCut->pArray[i]) );
-    printf( " }   " );
-    Extra_PrintBinary( stdout, &uTruth, 16 );  printf( "\n" );
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs incremental rewriting of the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Ivy_CutTruthPrint( Ivy_Man_t * p, Ivy_Cut_t * pCut, unsigned uTruth )
-{
-    Vec_Ptr_t * vArray;
-    Ivy_Obj_t * pObj, * pFanout;
-    int nLatches = 0;
-    int nPresent = 0;
-    int i, k;
-    int fVerbose = 0;
-
-    if ( fVerbose )
-        printf( "Trying cut : {" );
-    for ( i = 0; i < pCut->nSize; i++ )
-    {
-        if ( fVerbose )
-            printf( " %6d(%d)", Ivy_LeafId(pCut->pArray[i]), Ivy_LeafLat(pCut->pArray[i]) );
-        nLatches += Ivy_LeafLat(pCut->pArray[i]);
-    }
-    if ( fVerbose )
-        printf( " }   " );
-    if ( fVerbose )
-        printf( "Latches = %d. ", nLatches );
-
-    // check if there are latches on the fanout edges
-    vArray = Vec_PtrAlloc( 100 );
-    for ( i = 0; i < pCut->nSize; i++ )
-    {
-        pObj = Ivy_ManObj( p, Ivy_LeafId(pCut->pArray[i]) );
-        Ivy_ObjForEachFanout( p, pObj, vArray, pFanout, k )
-        {
-            if ( Ivy_ObjIsLatch(pFanout) )
-            {
-                nPresent++;
-                break;
-            }
-        }
-    }
-    Vec_PtrSize( vArray );
-    if ( fVerbose )
-    {
-        printf( "Present = %d. ", nPresent );
-        if ( nLatches > nPresent )
-            printf( "Clauses = %d. ", 2*(nLatches - nPresent) );
-        printf( "\n" );
-    }
-    return ( nLatches > nPresent ) ? 2*(nLatches - nPresent) : 0;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/ivy_.c b/src/aig/ivy/ivy_.c
deleted file mode 100644
index 65689689..00000000
--- a/src/aig/ivy/ivy_.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [ivy_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [And-Inverter Graph package.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - May 11, 2006.]
-
-  Revision    [$Id: ivy_.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "ivy.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/ivy/module.make b/src/aig/ivy/module.make
deleted file mode 100644
index daef43df..00000000
--- a/src/aig/ivy/module.make
+++ /dev/null
@@ -1,22 +0,0 @@
-SRC +=    src/aig/ivy/ivyBalance.c \
-    src/aig/ivy/ivyCanon.c \
-    src/aig/ivy/ivyCheck.c \
-    src/aig/ivy/ivyCut.c \
-    src/aig/ivy/ivyCutTrav.c \
-    src/aig/ivy/ivyDfs.c \
-    src/aig/ivy/ivyDsd.c \
-    src/aig/ivy/ivyFanout.c \
-    src/aig/ivy/ivyFastMap.c \
-    src/aig/ivy/ivyFraig.c \
-    src/aig/ivy/ivyHaig.c \
-    src/aig/ivy/ivyMan.c \
-    src/aig/ivy/ivyMem.c \
-    src/aig/ivy/ivyMulti.c \
-    src/aig/ivy/ivyObj.c \
-    src/aig/ivy/ivyOper.c \
-    src/aig/ivy/ivyResyn.c \
-    src/aig/ivy/ivyRwr.c \
-    src/aig/ivy/ivySeq.c \
-    src/aig/ivy/ivyShow.c \
-    src/aig/ivy/ivyTable.c \
-    src/aig/ivy/ivyUtil.c
diff --git a/src/aig/kit/cloud.c b/src/aig/kit/cloud.c
deleted file mode 100644
index 6e6691f0..00000000
--- a/src/aig/kit/cloud.c
+++ /dev/null
@@ -1,987 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cloudCore.c]
-
-  PackageName [Fast application-specific BDD package.]
-
-  Synopsis    [The package core.]
-
-  Author      [Alan Mishchenko <alanmi@ece.pdx.edu>]
-  
-  Affiliation [ECE Department. Portland State University, Portland, Oregon.]
-
-  Date        [Ver. 1.0. Started - June 10, 2002.]
-
-  Revision    [$Id: cloudCore.c,v 1.0 2002/06/10 03:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "cloud.h"
-
-// the number of operators using cache
-static int CacheOperNum = 4;
-
-// the ratio of cache size to the unique table size for each operator
-static int CacheLogRatioDefault[4] = {
-    2, // CLOUD_OPER_AND, 
-    8, // CLOUD_OPER_XOR, 
-    8, // CLOUD_OPER_BDIFF, 
-    8  // CLOUD_OPER_LEQ 
-};
-
-// the ratio of cache size to the unique table size for each operator
-static int CacheSize[4] = {
-    2, // CLOUD_OPER_AND, 
-    2, // CLOUD_OPER_XOR, 
-    2, // CLOUD_OPER_BDIFF, 
-    2  // CLOUD_OPER_LEQ 
-};
-
-////////////////////////////////////////////////////////////////////////
-///                       FUNCTION DECLARATIONS                      ///
-////////////////////////////////////////////////////////////////////////
-
-// static functions
-static CloudNode * cloudMakeNode( CloudManager * dd, CloudVar v, CloudNode * t, CloudNode * e );
-static void        cloudCacheAllocate( CloudManager * dd, CloudOper oper );
-
-////////////////////////////////////////////////////////////////////////
-///                       FUNCTION DEFINITIONS                       ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function********************************************************************
-
-  Synopsis    [Starts the cloud manager.]
-
-  Description [The first arguments is the number of elementary variables used.
-  The second arguments is the number of bits of the unsigned integer used to 
-  represent nodes in the unique table. If the second argument is 0, the package 
-  assumes 23 to represent nodes, which is equivalent to 2^23 = 8,388,608 nodes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudManager * Cloud_Init( int nVars, int nBits )
-{
-    CloudManager * dd;
-    int i;
-    int clk1, clk2;
-
-    assert( nVars <= 100000 );
-    assert( nBits < 32 );
-
-    // assign the defaults
-    if ( nBits == 0 )
-        nBits = CLOUD_NODE_BITS;
-
-    // start the manager
-    dd = CALLOC( CloudManager, 1 );
-    dd->nMemUsed          += sizeof(CloudManager);
-
-    // variables
-    dd->nVars             = nVars;              // the number of variables allocated
-    // bits
-    dd->bitsNode          = nBits;              // the number of bits used for the node
-    for ( i = 0; i < CacheOperNum; i++ )
-        dd->bitsCache[i]  = nBits - CacheLogRatioDefault[i];
-    // shifts
-    dd->shiftUnique       = 8*sizeof(unsigned) - (nBits + 1); // gets node index in the hash table
-    for ( i = 0; i < CacheOperNum; i++ )
-        dd->shiftCache[i] = 8*sizeof(unsigned) - dd->bitsCache[i];
-    // nodes
-    dd->nNodesAlloc       = (1 << (nBits + 1)); // 2 ^ (nBits + 1)
-    dd->nNodesLimit       = (1 << nBits);       // 2 ^  nBits
-
-    // unique table
-clk1 = clock();
-    dd->tUnique           = CALLOC( CloudNode, dd->nNodesAlloc );
-    dd->nMemUsed         += sizeof(CloudNode) * dd->nNodesAlloc;
-clk2 = clock();
-//PRT( "calloc() time", clk2 - clk1 ); 
-
-    // set up the constant node (the only node that is not in the hash table)
-    dd->nSignCur          = 1;
-    dd->tUnique[0].s      = dd->nSignCur;
-    dd->tUnique[0].v      = CLOUD_CONST_INDEX;
-    dd->tUnique[0].e      = CLOUD_VOID;
-    dd->tUnique[0].t      = CLOUD_VOID;
-    dd->one               = dd->tUnique;
-    dd->zero              = Cloud_Not(dd->one);
-    dd->nNodesCur         = 1;
-
-    // special nodes
-    dd->pNodeStart        = dd->tUnique + 1;
-    dd->pNodeEnd          = dd->tUnique + dd->nNodesAlloc;
-
-    // set up the elementary variables
-    dd->vars              = ALLOC( CloudNode *, dd->nVars );
-    dd->nMemUsed         += sizeof(CloudNode *) * dd->nVars;
-    for ( i = 0; i < dd->nVars; i++ )
-        dd->vars[i]   = cloudMakeNode( dd, i, dd->one, dd->zero );
-
-    return dd;
-};
-
-/**Function********************************************************************
-
-  Synopsis    [Stops the cloud manager.]
-
-  Description [The first arguments tells show many elementary variables are used.
-  The second arguments tells how many bits of the unsigned integer are used
-  to represent regular nodes in the unique table.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Cloud_Quit( CloudManager * dd )
-{
-    int i;
-    FREE( dd->ppNodes );
-    free( dd->tUnique ); 
-    free( dd->vars ); 
-    for ( i = 0; i < 4; i++ )
-        FREE( dd->tCaches[i] );
-    free( dd ); 
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Prepares the manager for another run.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Cloud_Restart( CloudManager * dd )
-{
-    int i;
-    assert( dd->one->s == dd->nSignCur );
-    dd->nSignCur++;
-    dd->one->s++;
-    for ( i = 0; i < dd->nVars; i++ )
-        dd->vars[i]->s++;
-    dd->nNodesCur = 1 + dd->nVars;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [This optional function allocates operation cache of the given size.]
-
-  Description [Cache for each operation is allocated independently when the first 
-  operation of the given type is performed. The user can allocate cache of his/her 
-  preferred size by calling Cloud_CacheAllocate before the first operation of the 
-  given type is performed, but this call is optional. Argument "logratio" gives
-  the binary logarithm of the ratio of the size of the unique table to that of cache.
-  For example, if "logratio" is equal to 3, and the unique table will be 2^3=8 times
-  larger than cache; so, if unique table is 2^23 = 8,388,608 nodes, the cache size 
-  will be 2^3=8 times smaller and equal to 2^20 = 1,048,576 entries.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Cloud_CacheAllocate( CloudManager * dd, CloudOper oper, int logratio )
-{
-    assert( logratio > 0 );            // cache cannot be larger than the unique table 
-    assert( logratio < dd->bitsNode ); // cache cannot be smaller than 2 entries
-
-    if ( logratio )
-    {
-        dd->bitsCache[oper]  = dd->bitsNode - logratio;
-        dd->shiftCache[oper] = 8*sizeof(unsigned) - dd->bitsCache[oper];
-    }
-    cloudCacheAllocate( dd, oper );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Internal cache allocation.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void cloudCacheAllocate( CloudManager * dd, CloudOper oper )
-{
-    int nCacheEntries = (1 << dd->bitsCache[oper]);
-
-    if ( CacheSize[oper] == 1 )
-    {
-        dd->tCaches[oper] = (CloudCacheEntry2 *)CALLOC( CloudCacheEntry1, nCacheEntries );
-        dd->nMemUsed     += sizeof(CloudCacheEntry1) * nCacheEntries;
-    }
-    else if ( CacheSize[oper] == 2 )
-    {
-        dd->tCaches[oper] = (CloudCacheEntry2 *)CALLOC( CloudCacheEntry2, nCacheEntries );
-        dd->nMemUsed     += sizeof(CloudCacheEntry2) * nCacheEntries;
-    }
-    else if ( CacheSize[oper] == 3 )
-    {
-        dd->tCaches[oper] = (CloudCacheEntry2 *)CALLOC( CloudCacheEntry3, nCacheEntries );
-        dd->nMemUsed     += sizeof(CloudCacheEntry3) * nCacheEntries;
-    }
-}
-
-
-
-/**Function********************************************************************
-
-  Synopsis    [Returns or creates a new node]
-
-  Description [Checks the unique table for the existance of the node. If the node is 
-  present, returns the node. If the node is absent, creates a new node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudNode * Cloud_MakeNode( CloudManager * dd, CloudVar v, CloudNode * t, CloudNode * e )
-{
-    CloudNode * pRes;
-    CLOUD_ASSERT(t); 
-    CLOUD_ASSERT(e);
-    assert( v < Cloud_V(t) && v < Cloud_V(e) );       // variable should be above in the order
-    if ( Cloud_IsComplement(t) )
-    {
-        pRes = cloudMakeNode( dd, v, Cloud_Not(t), Cloud_Not(e) );
-        if ( pRes != CLOUD_VOID )
-            pRes = Cloud_Not(pRes);            
-    }
-    else
-        pRes = cloudMakeNode( dd, v, t, e );
-    return pRes;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Returns or creates a new node]
-
-  Description [Checks the unique table for the existance of the node. If the node is 
-  present, returns the node. If the node is absent, creates a new node.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudNode * cloudMakeNode( CloudManager * dd, CloudVar v, CloudNode * t, CloudNode * e )
-{
-    CloudNode * entryUnique;
-
-    CLOUD_ASSERT(t); 
-    CLOUD_ASSERT(e);
-
-    assert( ((int)v) >= 0 && ((int)v) < dd->nVars );  // the variable must be in the range
-    assert( v < Cloud_V(t) && v < Cloud_V(e) );       // variable should be above in the order
-    assert( !Cloud_IsComplement(t) );                 // the THEN edge must not be complemented
-
-    // make sure we are not searching for the constant node
-    assert( t && e );
-
-    // get the unique entry
-    entryUnique = dd->tUnique + cloudHashCudd3(v, t, e, dd->shiftUnique);
-    while ( entryUnique->s == dd->nSignCur )
-    {
-        // compare the node
-        if ( entryUnique->v == v && entryUnique->t == t && entryUnique->e == e )
-        { // the node is found
-            dd->nUniqueHits++;
-            return entryUnique;  // returns the node
-        }
-        // increment the hash value modulus the hash table size
-        if ( ++entryUnique - dd->tUnique == dd->nNodesAlloc )
-            entryUnique = dd->tUnique + 1;
-        // increment the number of steps through the table
-        dd->nUniqueSteps++;
-    }
-    dd->nUniqueMisses++;
-
-    // check if the new node can be created
-    if ( ++dd->nNodesCur == dd->nNodesLimit ) 
-    { // initiate the restart
-        printf( "Cloud needs restart!\n" );
-//        fflush( stdout );
-//        exit(1);
-        return CLOUD_VOID;
-    }
-    // create the node
-    entryUnique->s   = dd->nSignCur;
-    entryUnique->v   = v;
-    entryUnique->t   = t;
-    entryUnique->e   = e;
-    return entryUnique;  // returns the node
-}
-
-
-/**Function********************************************************************
-
-  Synopsis    [Performs the AND or two BDDs]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudNode * cloudBddAnd( CloudManager * dd, CloudNode * f, CloudNode * g )
-{
-    CloudNode * F, * G, * r;
-    CloudCacheEntry2 * cacheEntry;
-    CloudNode * fv, * fnv, * gv, * gnv, * t, * e;
-    CloudVar  var;
-
-    assert( f <= g );
-
-    // terminal cases
-    F = Cloud_Regular(f);
-    G = Cloud_Regular(g);
-    if ( F == G )
-    {
-        if ( f == g )
-            return f;
-        else
-            return dd->zero;
-    }
-    if ( F == dd->one )
-    {
-        if ( f == dd->one )
-            return g;
-        else
-            return f;
-    }
-
-    // check cache
-    cacheEntry = dd->tCaches[CLOUD_OPER_AND] + cloudHashCudd2(f, g, dd->shiftCache[CLOUD_OPER_AND]);
-//    cacheEntry = dd->tCaches[CLOUD_OPER_AND] + cloudHashBuddy2(f, g, dd->shiftCache[CLOUD_OPER_AND]);
-    r = cloudCacheLookup2( cacheEntry, dd->nSignCur, f, g );
-    if ( r != CLOUD_VOID )
-    {
-        dd->nCacheHits++;
-        return r;
-    }
-    dd->nCacheMisses++;
-
-
-    // compute cofactors
-    if ( cloudV(F) <= cloudV(G) )
-    {
-        var = cloudV(F);
-        if ( Cloud_IsComplement(f) )
-        {
-            fnv = Cloud_Not(cloudE(F));
-            fv  = Cloud_Not(cloudT(F));
-        }
-        else
-        {
-            fnv = cloudE(F);
-            fv  = cloudT(F);
-        }
-    }
-    else
-    {
-        var = cloudV(G);
-        fv  = fnv = f;
-    }
-
-    if ( cloudV(G) <= cloudV(F) )
-    {
-        if ( Cloud_IsComplement(g) )
-        {
-            gnv = Cloud_Not(cloudE(G));
-            gv  = Cloud_Not(cloudT(G));
-        }
-        else
-        {
-            gnv = cloudE(G);
-            gv  = cloudT(G);
-        }
-    }
-    else
-    {
-        gv = gnv = g;
-    }
-
-    if ( fv <= gv )
-        t = cloudBddAnd( dd, fv, gv );
-    else
-        t = cloudBddAnd( dd, gv, fv );
-
-    if ( t == CLOUD_VOID )
-        return CLOUD_VOID;
-
-    if ( fnv <= gnv )
-        e = cloudBddAnd( dd, fnv, gnv );
-    else
-        e = cloudBddAnd( dd, gnv, fnv );
-
-    if ( e == CLOUD_VOID )
-        return CLOUD_VOID;
-
-    if ( t == e )
-        r = t;
-    else
-    {
-        if ( Cloud_IsComplement(t) )
-        {
-            r = cloudMakeNode( dd, var, Cloud_Not(t), Cloud_Not(e) );
-            if ( r == CLOUD_VOID )
-                return CLOUD_VOID;
-            r = Cloud_Not(r);
-        }
-        else
-        {
-            r = cloudMakeNode( dd, var, t, e );
-            if ( r == CLOUD_VOID )
-                return CLOUD_VOID;
-        }
-    }
-    cloudCacheInsert2( cacheEntry, dd->nSignCur, f, g, r );
-    return r;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Performs the AND or two BDDs]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-static inline CloudNode * cloudBddAnd_gate( CloudManager * dd, CloudNode * f, CloudNode * g )
-{
-    if ( f <= g )
-        return cloudBddAnd(dd,f,g);
-    else
-        return cloudBddAnd(dd,g,f);
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Performs the AND or two BDDs]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudNode * Cloud_bddAnd( CloudManager * dd, CloudNode * f, CloudNode * g )
-{
-    if ( Cloud_Regular(f) == CLOUD_VOID || Cloud_Regular(g) == CLOUD_VOID )
-        return CLOUD_VOID;
-    CLOUD_ASSERT(f);
-    CLOUD_ASSERT(g);
-    if ( dd->tCaches[CLOUD_OPER_AND] == NULL )
-        cloudCacheAllocate( dd, CLOUD_OPER_AND );
-    return cloudBddAnd_gate( dd, f, g );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Performs the OR or two BDDs]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudNode * Cloud_bddOr( CloudManager * dd, CloudNode * f, CloudNode * g )
-{
-    CloudNode * res;
-    if ( Cloud_Regular(f) == CLOUD_VOID || Cloud_Regular(g) == CLOUD_VOID )
-        return CLOUD_VOID;
-    CLOUD_ASSERT(f);
-    CLOUD_ASSERT(g);
-    if ( dd->tCaches[CLOUD_OPER_AND] == NULL )
-        cloudCacheAllocate( dd, CLOUD_OPER_AND );
-    res = cloudBddAnd_gate( dd, Cloud_Not(f), Cloud_Not(g) );
-    res = Cloud_NotCond( res, res != CLOUD_VOID );
-    return res;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Performs the XOR or two BDDs]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudNode * Cloud_bddXor( CloudManager * dd, CloudNode * f, CloudNode * g )
-{
-    CloudNode * t0, * t1, * r;
-    if ( Cloud_Regular(f) == CLOUD_VOID || Cloud_Regular(g) == CLOUD_VOID )
-        return CLOUD_VOID;
-    CLOUD_ASSERT(f);
-    CLOUD_ASSERT(g);
-    if ( dd->tCaches[CLOUD_OPER_AND] == NULL )
-        cloudCacheAllocate( dd, CLOUD_OPER_AND );
-    t0 = cloudBddAnd_gate( dd, f, Cloud_Not(g) );
-    if ( t0 == CLOUD_VOID )
-        return CLOUD_VOID;
-    t1 = cloudBddAnd_gate( dd, Cloud_Not(f), g );
-    if ( t1 == CLOUD_VOID )
-        return CLOUD_VOID;
-    r  = Cloud_bddOr( dd, t0, t1 );
-    return r;
-}
-
-
-
-/**Function********************************************************************
-
-  Synopsis    [Performs a DFS from f, clearing the LSB of the next
-  pointers.]
-
-  Description []
-
-  SideEffects [None]
-
-  SeeAlso     [cloudSupport cloudDagSize]
-
-******************************************************************************/
-static void cloudClearMark( CloudManager * dd, CloudNode * n )
-{
-    if ( !cloudNodeIsMarked(n) )
-        return;
-    // clear visited flag
-    cloudNodeUnmark(n);
-    if ( cloudIsConstant(n) )
-        return;
-    cloudClearMark( dd, cloudT(n) );
-    cloudClearMark( dd, Cloud_Regular(cloudE(n)) );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Performs the recursive step of Cloud_Support.]
-
-  Description [Performs the recursive step of Cloud_Support. Performs a
-  DFS from f. The support is accumulated in supp as a side effect. Uses
-  the LSB of the then pointer as visited flag.]
-
-  SideEffects [None]
-
-  SeeAlso     []
-
-******************************************************************************/
-static void cloudSupport( CloudManager * dd, CloudNode * n, int * support )
-{
-    if ( cloudIsConstant(n) || cloudNodeIsMarked(n) )
-        return;
-    // set visited flag
-    cloudNodeMark(n);
-    support[cloudV(n)] = 1;
-    cloudSupport( dd, cloudT(n), support );
-    cloudSupport( dd, Cloud_Regular(cloudE(n)), support );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Finds the variables on which a DD depends.]
-
-  Description [Finds the variables on which a DD depends.
-  Returns a BDD consisting of the product of the variables if
-  successful; NULL otherwise.]
-
-  SideEffects [None]
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudNode * Cloud_Support( CloudManager * dd, CloudNode * n )
-{
-    CloudNode * res;
-    int * support, i;
-
-    CLOUD_ASSERT(n);
-
-    // allocate and initialize support array for cloudSupport
-    support = CALLOC( int, dd->nVars );
-
-    // compute support and clean up markers
-    cloudSupport( dd, Cloud_Regular(n), support );
-    cloudClearMark( dd, Cloud_Regular(n) );
-
-    // transform support from array to cube
-    res = dd->one;
-    for ( i = dd->nVars - 1; i >= 0; i-- ) // for each level bottom-up 
-        if ( support[i] == 1 )
-        {
-            res = Cloud_bddAnd( dd, res, dd->vars[i] );
-            if ( res == CLOUD_VOID )
-                break;
-        }
-    FREE( support );
-    return res;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Counts the variables on which a DD depends.]
-
-  Description [Counts the variables on which a DD depends.
-  Returns the number of the variables if successful; Cloud_OUT_OF_MEM
-  otherwise.]
-
-  SideEffects [None]
-
-  SeeAlso     []
-
-******************************************************************************/
-int Cloud_SupportSize( CloudManager * dd, CloudNode * n )
-{
-    int * support, i, count;
-
-    CLOUD_ASSERT(n);
-
-    // allocate and initialize support array for cloudSupport
-    support = CALLOC( int, dd->nVars );
-
-    // compute support and clean up markers
-    cloudSupport( dd, Cloud_Regular(n), support );
-    cloudClearMark( dd, Cloud_Regular(n) );
-
-    // count support variables
-    count = 0;
-    for ( i = 0; i < dd->nVars; i++ )
-    {
-        if ( support[i] == 1 )
-            count++;
-    }
-
-    FREE( support );
-    return count;
-}
-
-
-/**Function********************************************************************
-
-  Synopsis    [Performs the recursive step of Cloud_DagSize.]
-
-  Description [Performs the recursive step of Cloud_DagSize. Returns the
-  number of nodes in the graph rooted at n.]
-
-  SideEffects [None]
-
-******************************************************************************/
-static int cloudDagSize( CloudManager * dd, CloudNode * n )
-{
-    int tval, eval;
-    if ( cloudNodeIsMarked(n) )
-        return 0;
-    // set visited flag
-    cloudNodeMark(n);
-    if ( cloudIsConstant(n) )
-        return 1;
-    tval = cloudDagSize( dd, cloudT(n) );
-    eval = cloudDagSize( dd, Cloud_Regular(cloudE(n)) );
-    return tval + eval + 1;
-
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Counts the number of nodes in a DD.]
-
-  Description [Counts the number of nodes in a DD. Returns the number
-  of nodes in the graph rooted at node.]
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-int Cloud_DagSize( CloudManager * dd, CloudNode * n )
-{
-    int res;
-    res = cloudDagSize( dd, Cloud_Regular( n ) );
-    cloudClearMark( dd, Cloud_Regular( n ) );
-    return res;
-
-}
-
-
-/**Function********************************************************************
-
-  Synopsis    [Performs the recursive step of Cloud_DagSize.]
-
-  Description [Performs the recursive step of Cloud_DagSize. Returns the
-  number of nodes in the graph rooted at n.]
-
-  SideEffects [None]
-
-******************************************************************************/
-static int Cloud_DagCollect_rec( CloudManager * dd, CloudNode * n, int * pCounter )
-{
-    int tval, eval;
-    if ( cloudNodeIsMarked(n) )
-        return 0;
-    // set visited flag
-    cloudNodeMark(n);
-    if ( cloudIsConstant(n) )
-    {
-        dd->ppNodes[(*pCounter)++] = n;
-        return 1;
-    }
-    tval = Cloud_DagCollect_rec( dd, cloudT(n), pCounter );
-    eval = Cloud_DagCollect_rec( dd, Cloud_Regular(cloudE(n)), pCounter );
-    dd->ppNodes[(*pCounter)++] = n;
-    return tval + eval + 1;
-
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Counts the number of nodes in a DD.]
-
-  Description [Counts the number of nodes in a DD. Returns the number
-  of nodes in the graph rooted at node.]
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-int Cloud_DagCollect( CloudManager * dd, CloudNode * n )
-{
-    int res, Counter = 0;
-    if ( dd->ppNodes == NULL )
-        dd->ppNodes = ALLOC( CloudNode *, dd->nNodesLimit );
-    res = Cloud_DagCollect_rec( dd, Cloud_Regular( n ), &Counter );
-    cloudClearMark( dd, Cloud_Regular( n ) );
-    assert( res == Counter );
-    return res;
-
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Counts the number of nodes in an array of DDs.]
-
-  Description [Counts the number of nodes in a DD. Returns the number
-  of nodes in the graph rooted at node.]
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-int Cloud_SharingSize( CloudManager * dd, CloudNode ** pn, int nn )
-{
-    int res, i;
-    res = 0;
-    for ( i = 0; i < nn; i++ )
-        res += cloudDagSize( dd, Cloud_Regular( pn[i] ) );
-    for ( i = 0; i < nn; i++ )
-        cloudClearMark( dd, Cloud_Regular( pn[i] ) );
-    return res;
-}
-
-
-/**Function********************************************************************
-
-  Synopsis    [Returns one cube contained in the given BDD.]
-
-  Description []
-
-  SideEffects []
-
-******************************************************************************/
-CloudNode * Cloud_GetOneCube( CloudManager * dd, CloudNode * bFunc )
-{
-    CloudNode * bFunc0, * bFunc1, * res;
-
-    if ( Cloud_IsConstant(bFunc) )
-        return bFunc;
-
-    // cofactor
-    if ( Cloud_IsComplement(bFunc) )
-    {
-        bFunc0 = Cloud_Not( cloudE(bFunc) );
-        bFunc1 = Cloud_Not( cloudT(bFunc) );
-    }
-    else
-    {
-        bFunc0 = cloudE(bFunc);
-        bFunc1 = cloudT(bFunc);
-    }
-
-    // try to find the cube with the negative literal
-    res = Cloud_GetOneCube( dd, bFunc0 );
-    if ( res == CLOUD_VOID )
-        return CLOUD_VOID;
-
-    if ( res != dd->zero )
-    {
-        res = Cloud_bddAnd( dd, res, Cloud_Not(dd->vars[Cloud_V(bFunc)]) );
-    }
-    else
-    {
-        // try to find the cube with the positive literal
-        res = Cloud_GetOneCube( dd, bFunc1 );
-        if ( res == CLOUD_VOID )
-            return CLOUD_VOID;
-        assert( res != dd->zero );
-        res = Cloud_bddAnd( dd, res, dd->vars[Cloud_V(bFunc)] );
-    }
-    return res;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Prints the BDD as a set of disjoint cubes to the standard output.]
-
-  Description []
-
-  SideEffects []
-
-******************************************************************************/
-void Cloud_bddPrint( CloudManager * dd, CloudNode * Func )
-{
-    CloudNode * Cube;
-    int fFirst = 1;
-
-    if ( Func == dd->zero )
-        printf( "Constant 0." );
-    else if ( Func == dd->one )
-        printf( "Constant 1." );
-    else
-    {
-        while ( 1 )
-        {
-            Cube = Cloud_GetOneCube( dd, Func );
-            if ( Cube == CLOUD_VOID || Cube == dd->zero )
-                break;
-            if ( fFirst )       fFirst = 0;
-            else                printf( " + " );
-            Cloud_bddPrintCube( dd, Cube );
-            Func = Cloud_bddAnd( dd, Func, Cloud_Not(Cube) );
-        } 
-    }
-    printf( "\n" );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Prints one cube.]
-
-  Description []
-
-  SideEffects []
-
-******************************************************************************/
-void Cloud_bddPrintCube( CloudManager * dd, CloudNode * bCube )
-{
-    CloudNode * bCube0, * bCube1;
-
-    assert( !Cloud_IsConstant(bCube) );
-    while ( 1 )
-    {
-        // get the node structure
-        if ( Cloud_IsConstant(bCube) )
-            break;
-
-        // cofactor the cube
-        if ( Cloud_IsComplement(bCube) )
-        {
-            bCube0 = Cloud_Not( cloudE(bCube) );
-            bCube1 = Cloud_Not( cloudT(bCube) );
-        }
-        else
-        {
-            bCube0 = cloudE(bCube);
-            bCube1 = cloudT(bCube);
-        }
-
-        if ( bCube0 != dd->zero )
-        {
-            assert( bCube1 == dd->zero );
-            printf( "[%d]'", cloudV(bCube) );
-            bCube = bCube0;
-        }
-        else
-        {
-            assert( bCube1 != dd->zero );
-            printf( "[%d]", cloudV(bCube) );
-            bCube = bCube1;
-        }
-    }
-}
-
-
-/**Function********************************************************************
-
-  Synopsis    [Prints info.]
-
-  Description []
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Cloud_PrintInfo( CloudManager * dd )
-{
-    if ( dd == NULL ) return;
-    printf( "The number of unique table nodes allocated = %12d.\n", dd->nNodesAlloc );
-    printf( "The number of unique table nodes present   = %12d.\n", dd->nNodesCur );
-    printf( "The number of unique table hits            = %12d.\n", dd->nUniqueHits );
-    printf( "The number of unique table misses          = %12d.\n", dd->nUniqueMisses );
-    printf( "The number of unique table steps           = %12d.\n", dd->nUniqueSteps );
-    printf( "The number of cache hits                   = %12d.\n", dd->nCacheHits );
-    printf( "The number of cache misses                 = %12d.\n", dd->nCacheMisses );
-    printf( "The current signature                      = %12d.\n", dd->nSignCur );
-    printf( "The total memory in use                    = %12d.\n", dd->nMemUsed );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Prints the state of the hash table.]
-
-  Description []
-
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Cloud_PrintHashTable( CloudManager * dd )
-{
-    int i;
-
-    for ( i = 0; i < dd->nNodesAlloc; i++ )
-        if ( dd->tUnique[i].v == CLOUD_CONST_INDEX )
-            printf( "-" );
-        else
-            printf( "+" );
-    printf( "\n" );
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/kit/cloud.h b/src/aig/kit/cloud.h
deleted file mode 100644
index ac9d45f4..00000000
--- a/src/aig/kit/cloud.h
+++ /dev/null
@@ -1,269 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [cloud.h]
-
-  PackageName [Fast application-specific BDD package.]
-
-  Synopsis    [Interface of the package.]
-
-  Author      [Alan Mishchenko <alanmi@ece.pdx.edu>]
-  
-  Affiliation [ECE Department. Portland State University, Portland, Oregon.]
-
-  Date        [Ver. 1.0. Started - June 10, 2002.]
-
-  Revision    [$Id: cloud.h,v 1.0 2002/06/10 03:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __CLOUD_H__
-#define __CLOUD_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <time.h>
-
-#ifdef _WIN32
-#define inline __inline // compatible with MS VS 6.0
-#endif
-
-////////////////////////////////////////////////////////////////////////
-//  n |  2^n ||  n |    2^n ||  n |        2^n ||  n |           2^n  //
-//====================================================================//
-//  1 |    2 ||  9 |    512 || 17 |    131,072 || 25 |    33,554,432  //
-//  2 |    4 || 10 |  1,024 || 18 |    262,144 || 26 |    67,108,864  // 
-//  3 |    8 || 11 |  2,048 || 19 |    524,288 || 27 |   134,217,728  //
-//  4 |   16 || 12 |  4,096 || 20 |  1,048,576 || 28 |   268,435,456  //
-//  5 |   32 || 13 |  8,192 || 21 |  2,097,152 || 29 |   536,870,912  //
-//  6 |   64 || 14 | 16,384 || 22 |  4,194,304 || 30 | 1,073,741,824  //
-//  7 |  128 || 15 | 32,768 || 23 |  8,388,608 || 31 | 2,147,483,648  //
-//  8 |  256 || 16 | 65,536 || 24 | 16,777,216 || 32 | 4,294,967,296  //
-////////////////////////////////////////////////////////////////////////
-
-// data structure typedefs
-typedef struct cloudManager       CloudManager;
-typedef unsigned                  CloudVar;
-typedef unsigned                  CloudSign;
-typedef struct cloudNode          CloudNode;
-typedef struct cloudCacheEntry1   CloudCacheEntry1;
-typedef struct cloudCacheEntry2   CloudCacheEntry2;
-typedef struct cloudCacheEntry3   CloudCacheEntry3;
-
-// operation codes used to set up the cache
-typedef enum { 
-    CLOUD_OPER_AND, 
-    CLOUD_OPER_XOR, 
-    CLOUD_OPER_BDIFF, 
-    CLOUD_OPER_LEQ 
-} CloudOper;
-
-/*
-// the number of operators using cache
-static int CacheOperNum = 4;
-
-// the ratio of cache size to the unique table size for each operator
-static int CacheLogRatioDefault[4] = {
-    4, // CLOUD_OPER_AND, 
-    8, // CLOUD_OPER_XOR, 
-    8, // CLOUD_OPER_BDIFF, 
-    8  // CLOUD_OPER_LEQ 
-};
-
-// the ratio of cache size to the unique table size for each operator
-static int CacheSize[4] = {
-    2, // CLOUD_OPER_AND, 
-    2, // CLOUD_OPER_XOR, 
-    2, // CLOUD_OPER_BDIFF, 
-    2  // CLOUD_OPER_LEQ 
-};
-*/
-
-// data structure definitions
-struct cloudManager            // the fast bdd manager     
-{
-    // variables
-    int nVars;                 // the number of variables allocated
-    // bits
-    int bitsNode;              // the number of bits used for the node
-    int bitsCache[4];          // default: bitsNode - CacheSizeRatio[i]
-    // shifts
-    int shiftUnique;           // 8*sizeof(unsigned) - (bitsNode + 1)
-    int shiftCache[4];         // 8*sizeof(unsigned) -  bitsCache[i]
-    // nodes 
-    int nNodesAlloc;           // 2 ^ (bitsNode + 1)
-    int nNodesLimit;           // 2 ^  bitsNode
-    int nNodesCur;             // the current number of nodes (including const1 and vars)
-    // signature
-    CloudSign nSignCur;
-
-    // statistics
-    int nMemUsed;              // memory usage in bytes
-    // cache stats
-    int nUniqueHits;           // hits in the unique table
-    int nUniqueMisses;         // misses in the unique table
-    int nCacheHits;            // hits in the caches
-    int nCacheMisses;          // misses in the caches
-    // the number of steps through the hash table
-    int nUniqueSteps;
-
-    // tables
-    CloudNode * tUnique;       // the unique table to store BDD nodes
-
-    // special nodes
-    CloudNode * pNodeStart;    // the pointer to the first node
-    CloudNode * pNodeEnd;      // the pointer to the first node out of the table
-
-    // constants and variables
-    CloudNode *  one;          // the one function
-    CloudNode *  zero;         // the zero function
-    CloudNode ** vars;         // the elementary variables
-
-    // temporary storage for nodes
-    CloudNode ** ppNodes;
-
-    // caches
-    CloudCacheEntry2 * tCaches[20];    // caches
-};
-
-struct cloudNode   // representation of the node in the unique table
-{
-    CloudSign   s;         // signature
-    CloudVar    v;         // variable
-    CloudNode * e;         // negative cofactor
-    CloudNode * t;         // positive cofactor
-};
-struct cloudCacheEntry1  // one-argument cache
-{
-    CloudSign   s;         // signature
-    CloudNode * a;         // argument 1
-    CloudNode * r;         // result
-};
-struct cloudCacheEntry2  // the two-argument cache
-{
-    CloudSign   s;         // signature
-    CloudNode * a;
-    CloudNode * b;
-    CloudNode * r;
-};
-struct cloudCacheEntry3  // the three-argument cache
-{
-    CloudSign   s;         // signature
-    CloudNode * a;
-    CloudNode * b;
-    CloudNode * c;
-    CloudNode * r;
-};
-
-
-// parameters
-#define CLOUD_NODE_BITS              23
-#define CLOUD_ONE                    ((unsigned)0x00000001)
-#define CLOUD_NOT_ONE                ((unsigned)0xfffffffe)
-#define CLOUD_VOID                   ((unsigned)0x00000000)
-
-#define CLOUD_CONST_INDEX            ((unsigned)0x0fffffff)
-#define CLOUD_MARK_ON                ((unsigned)0x10000000)
-#define CLOUD_MARK_OFF               ((unsigned)0xefffffff)
-
-// hash functions a la Buddy
-#define cloudHashBuddy2(x,y,s)       ((((x)+(y))*((x)+(y)+1)/2) & ((1<<(32-(s)))-1))
-#define cloudHashBuddy3(x,y,z,s)     (cloudHashBuddy2((cloudHashBuddy2((x),(y),(s))),(z),(s)) & ((1<<(32-(s)))-1))
-// hash functions a la Cudd
-#define DD_P1                           12582917
-#define DD_P2                         4256249
-#define DD_P3                         741457
-#define DD_P4                         1618033999
-#define cloudHashCudd2(f,g,s)        ((((unsigned)(f) * DD_P1 + (unsigned)(g)) * DD_P2) >> (s))
-#define cloudHashCudd3(f,g,h,s)      (((((unsigned)(f) * DD_P1 + (unsigned)(g)) * DD_P2 + (unsigned)(h)) * DD_P3) >> (s))
-
-// node complementation (using node)
-#define Cloud_Regular(p)             ((CloudNode*)(((unsigned)(p)) & CLOUD_NOT_ONE)) // get the regular node (w/o bubble)
-#define Cloud_Not(p)                 ((CloudNode*)(((unsigned)(p)) ^ CLOUD_ONE))     // complement the node
-#define Cloud_NotCond(p,c)           (((int)(c))? Cloud_Not(p):(p))                  // complement the node conditionally
-#define Cloud_IsComplement(p)        ((int)(((unsigned)(p)) & CLOUD_ONE))            // check if complemented
-// checking constants (using node)
-#define Cloud_IsConstant(p)          (((Cloud_Regular(p))->v & CLOUD_MARK_OFF) == CLOUD_CONST_INDEX)
-#define cloudIsConstant(p)           (((p)->v & CLOUD_MARK_OFF) == CLOUD_CONST_INDEX)
-
-// retrieving values from the node (using node structure)
-#define Cloud_V(p)                   ((Cloud_Regular(p))->v)
-#define Cloud_E(p)                   ((Cloud_Regular(p))->e)
-#define Cloud_T(p)                   ((Cloud_Regular(p))->t)
-// retrieving values from the regular node (using node structure)
-#define cloudV(p)                    ((p)->v)
-#define cloudE(p)                    ((p)->e)
-#define cloudT(p)                    ((p)->t)
-// marking/unmarking (using node structure)
-#define cloudNodeMark(p)             ((p)->v       |= CLOUD_MARK_ON)
-#define cloudNodeUnmark(p)           ((p)->v       &= CLOUD_MARK_OFF)
-#define cloudNodeIsMarked(p)         ((int)((p)->v &  CLOUD_MARK_ON))
-
-// cache lookups and inserts (using node)
-#define cloudCacheLookup1(p,sign,f)     (((p)->s == (sign) && (p)->a == (f))? ((p)->r): (CLOUD_VOID))
-#define cloudCacheLookup2(p,sign,f,g)   (((p)->s == (sign) && (p)->a == (f) && (p)->b == (g))? ((p)->r): (CLOUD_VOID))
-#define cloudCacheLookup3(p,sign,f,g,h) (((p)->s == (sign) && (p)->a == (f) && (p)->b == (g) && (p)->c == (h))? ((p)->r): (CLOUD_VOID))
-// cache inserts
-#define cloudCacheInsert1(p,sign,f,r)     (((p)->s = (sign)), ((p)->a = (f)), ((p)->r = (r)))
-#define cloudCacheInsert2(p,sign,f,g,r)   (((p)->s = (sign)), ((p)->a = (f)), ((p)->b = (g)), ((p)->r = (r)))
-#define cloudCacheInsert3(p,sign,f,g,h,r) (((p)->s = (sign)), ((p)->a = (f)), ((p)->b = (g)), ((p)->c = (h)), ((p)->r = (r)))
-
-//#define CLOUD_ASSERT(p)              (assert((p) >= (dd->pNodeStart-1) && (p) < dd->pNodeEnd))
-#define CLOUD_ASSERT(p)            assert((p) >= dd->tUnique && (p) < dd->tUnique+dd->nNodesAlloc)
-
-// utility macros
-#ifndef ALLOC
-#define ALLOC(type, num)           ((type *) malloc(sizeof(type) * (num)))
-#endif
-
-#ifndef CALLOC
-#define CALLOC(type, num)           ((type *) calloc((num), sizeof(type)))
-#endif
-
-#ifndef FREE
-#define FREE(obj)                   ((obj) ? (free((char *) (obj)), (obj) = 0) : 0)
-#endif
-
-#ifndef PRT
-#define PRT(a,t)                   fprintf( stdout, "%s = ", (a)); printf( "%.2f sec\n", (float)(t)/(float)(CLOCKS_PER_SEC) )
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       FUNCTION DECLARATIONS                      ///
-////////////////////////////////////////////////////////////////////////
-// starting/stopping 
-extern CloudManager * Cloud_Init( int nVars, int nBits );
-extern void           Cloud_Quit( CloudManager * dd );
-extern void           Cloud_Restart( CloudManager * dd );
-extern void           Cloud_CacheAllocate( CloudManager * dd, CloudOper oper, int size );
-extern CloudNode *    Cloud_MakeNode( CloudManager * dd, CloudVar v, CloudNode * t, CloudNode * e );
-// support and node count
-extern CloudNode *    Cloud_Support( CloudManager * dd, CloudNode * n );
-extern int            Cloud_SupportSize( CloudManager * dd, CloudNode * n );
-extern int            Cloud_DagSize( CloudManager * dd, CloudNode * n );
-extern int            Cloud_DagCollect( CloudManager * dd, CloudNode * n );
-extern int            Cloud_SharingSize( CloudManager * dd, CloudNode * * pn, int nn );
-// cubes
-extern CloudNode *    Cloud_GetOneCube( CloudManager * dd, CloudNode * n );
-extern void           Cloud_bddPrint( CloudManager * dd, CloudNode * Func );
-extern void           Cloud_bddPrintCube( CloudManager * dd, CloudNode * Cube );
-// operations
-extern CloudNode *    Cloud_bddAnd( CloudManager * dd, CloudNode * f, CloudNode * g );
-extern CloudNode *    Cloud_bddOr( CloudManager * dd, CloudNode * f, CloudNode * g );
-// stats 
-extern void           Cloud_PrintInfo( CloudManager * dd );
-extern void           Cloud_PrintHashTable( CloudManager * dd );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                            END OF FILE                           ///
-////////////////////////////////////////////////////////////////////////
diff --git a/src/aig/kit/kit.h b/src/aig/kit/kit.h
deleted file mode 100644
index 06a93cf0..00000000
--- a/src/aig/kit/kit.h
+++ /dev/null
@@ -1,594 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kit.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kit.h,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __KIT_H__
-#define __KIT_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-#include "vec.h"
-#include "extra.h"
-#include "cloud.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Kit_Sop_t_ Kit_Sop_t;
-struct Kit_Sop_t_
-{
-    int               nCubes;         // the number of cubes
-    unsigned *        pCubes;         // the storage for cubes
-};
-
-typedef struct Kit_Edge_t_ Kit_Edge_t;
-struct Kit_Edge_t_
-{
-    unsigned          fCompl   :  1;   // the complemented bit
-    unsigned          Node     : 30;   // the decomposition node pointed by the edge
-};
-
-typedef struct Kit_Node_t_ Kit_Node_t;
-struct Kit_Node_t_
-{
-    Kit_Edge_t        eEdge0;          // the left child of the node
-    Kit_Edge_t        eEdge1;          // the right child of the node
-    // other info
-    void *            pFunc;           // the function of the node (BDD or AIG)
-    unsigned          Level    : 14;   // the level of this node in the global AIG
-    // printing info 
-    unsigned          fNodeOr  :  1;   // marks the original OR node
-    unsigned          fCompl0  :  1;   // marks the original complemented edge
-    unsigned          fCompl1  :  1;   // marks the original complemented edge
-    // latch info
-    unsigned          nLat0    :  5;   // the number of latches on the first edge
-    unsigned          nLat1    :  5;   // the number of latches on the second edge
-    unsigned          nLat2    :  5;   // the number of latches on the output edge
-};
-
-typedef struct Kit_Graph_t_ Kit_Graph_t;
-struct Kit_Graph_t_
-{
-    int               fConst;          // marks the constant 1 graph
-    int               nLeaves;         // the number of leaves
-    int               nSize;           // the number of nodes (including the leaves) 
-    int               nCap;            // the number of allocated nodes
-    Kit_Node_t *      pNodes;          // the array of leaves and internal nodes
-    Kit_Edge_t        eRoot;           // the pointer to the topmost node
-};
-
-
-// DSD node types
-typedef enum { 
-    KIT_DSD_NONE  = 0,  // 0: unknown
-    KIT_DSD_CONST1,     // 1: constant 1
-    KIT_DSD_VAR,        // 2: elementary variable
-    KIT_DSD_AND,        // 3: multi-input AND
-    KIT_DSD_XOR,        // 4: multi-input XOR
-    KIT_DSD_PRIME       // 5: arbitrary function of 3+ variables
-} Kit_Dsd_t;
-
-// DSD node
-typedef struct Kit_DsdObj_t_ Kit_DsdObj_t;
-struct Kit_DsdObj_t_
-{ 
-    unsigned       Id         : 6;  // the number of this node
-    unsigned       Type       : 3;  // none, const, var, AND, XOR, MUX, PRIME
-    unsigned       fMark      : 1;  // finished checking output
-    unsigned       Offset     : 8;  // offset to the truth table
-    unsigned       nRefs      : 8;  // offset to the truth table
-    unsigned       nFans      : 6;  // the number of fanins of this node
-    unsigned char  pFans[0];        // the fanin literals
-};
-
-// DSD network
-typedef struct Kit_DsdNtk_t_ Kit_DsdNtk_t;
-struct Kit_DsdNtk_t_
-{
-    unsigned char  nVars;           // at most 16 (perhaps 18?)
-    unsigned char  nNodesAlloc;     // the number of allocated nodes (at most nVars)
-    unsigned char  nNodes;          // the number of nodes
-    unsigned char  Root;            // the root of the tree
-    unsigned *     pMem;            // memory for the truth tables (memory manager?)
-    unsigned *     pSupps;          // supports of the nodes
-    Kit_DsdObj_t** pNodes;          // the nodes
-};
-
-// DSD manager
-typedef struct Kit_DsdMan_t_ Kit_DsdMan_t;
-struct Kit_DsdMan_t_
-{
-    int            nVars;           // the maximum number of variables
-    int            nWords;          // the number of words in TTs
-    Vec_Ptr_t *    vTtElems;        // elementary truth tables
-    Vec_Ptr_t *    vTtNodes;        // the node truth tables
-    // BDD representation
-    CloudManager * dd;              // BDD package
-    Vec_Ptr_t *    vTtBdds;         // the node truth tables
-    Vec_Int_t *    vNodes;          // temporary array for BDD nodes
-};
-
-static inline int             Kit_DsdVar2Lit( int Var, int fCompl )  { return Var + Var + fCompl; }
-static inline int             Kit_DsdLit2Var( int Lit )              { return Lit >> 1;           }
-static inline int             Kit_DsdLitIsCompl( int Lit )           { return Lit & 1;            }
-static inline int             Kit_DsdLitNot( int Lit )               { return Lit ^ 1;            }
-static inline int             Kit_DsdLitNotCond( int Lit, int c )    { return Lit ^ (int)(c > 0); }
-static inline int             Kit_DsdLitRegular( int Lit )           { return Lit & 0xfe;         }
- 
-static inline unsigned        Kit_DsdObjOffset( int nFans )          { return (nFans >> 2) + ((nFans & 3) > 0);                    }
-static inline unsigned *      Kit_DsdObjTruth( Kit_DsdObj_t * pObj ) { return pObj->Type == KIT_DSD_PRIME ? (unsigned *)pObj->pFans + pObj->Offset: NULL; }
-static inline int             Kit_DsdNtkObjNum( Kit_DsdNtk_t * pNtk ){ return pNtk->nVars + pNtk->nNodes; }
-static inline Kit_DsdObj_t *  Kit_DsdNtkObj( Kit_DsdNtk_t * pNtk, int Id )      { assert( Id >= 0 && Id < pNtk->nVars + pNtk->nNodes ); return Id < pNtk->nVars ? NULL : pNtk->pNodes[Id - pNtk->nVars]; }
-static inline Kit_DsdObj_t *  Kit_DsdNtkRoot( Kit_DsdNtk_t * pNtk )             { return Kit_DsdNtkObj( pNtk, Kit_DsdLit2Var(pNtk->Root) );                      }
-static inline int             Kit_DsdLitIsLeaf( Kit_DsdNtk_t * pNtk, int Lit )   { int Id = Kit_DsdLit2Var(Lit); assert( Id >= 0 && Id < pNtk->nVars + pNtk->nNodes ); return Id < pNtk->nVars; }
-static inline unsigned        Kit_DsdLitSupport( Kit_DsdNtk_t * pNtk, int Lit )  { int Id = Kit_DsdLit2Var(Lit); assert( Id >= 0 && Id < pNtk->nVars + pNtk->nNodes ); return pNtk->pSupps? (Id < pNtk->nVars? (1 << Id) : pNtk->pSupps[Id - pNtk->nVars]) : 0; }
-
-#define Kit_DsdNtkForEachObj( pNtk, pObj, i )                                      \
-    for ( i = 0; (i < (pNtk)->nNodes) && ((pObj) = (pNtk)->pNodes[i]); i++ )
-#define Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )                              \
-    for ( i = 0; (i < (pObj)->nFans) && ((iLit) = (pObj)->pFans[i], 1); i++ )
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-#define KIT_MIN(a,b)       (((a) < (b))? (a) : (b))
-#define KIT_MAX(a,b)       (((a) > (b))? (a) : (b))
-#define KIT_INFINITY       (100000000)
-
-#ifndef ALLOC
-#define ALLOC(type, num)     ((type *) malloc(sizeof(type) * (num)))
-#endif
-
-#ifndef FREE
-#define FREE(obj)             ((obj) ? (free((char *) (obj)), (obj) = 0) : 0)
-#endif
-
-#ifndef REALLOC
-#define REALLOC(type, obj, num)    \
-        ((obj) ? ((type *) realloc((char *)(obj), sizeof(type) * (num))) : \
-         ((type *) malloc(sizeof(type) * (num))))
-#endif
-
-static inline int          Kit_CubeHasLit( unsigned uCube, int i )                        { return(uCube &  (unsigned)(1<<i)) > 0;  }
-static inline unsigned     Kit_CubeSetLit( unsigned uCube, int i )                        { return uCube |  (unsigned)(1<<i);       }
-static inline unsigned     Kit_CubeXorLit( unsigned uCube, int i )                        { return uCube ^  (unsigned)(1<<i);       }
-static inline unsigned     Kit_CubeRemLit( unsigned uCube, int i )                        { return uCube & ~(unsigned)(1<<i);       }
-
-static inline int          Kit_CubeContains( unsigned uLarge, unsigned uSmall )           { return (uLarge & uSmall) == uSmall;     }
-static inline unsigned     Kit_CubeSharp( unsigned uCube, unsigned uMask )                { return uCube & ~uMask;                  }
-static inline unsigned     Kit_CubeMask( int nVar )                                       { return (~(unsigned)0) >> (32-nVar);     }
-
-static inline int          Kit_CubeIsMarked( unsigned uCube )                             { return Kit_CubeHasLit( uCube, 31 );     }
-static inline unsigned     Kit_CubeMark( unsigned uCube )                                 { return Kit_CubeSetLit( uCube, 31 );     }
-static inline unsigned     Kit_CubeUnmark( unsigned uCube )                               { return Kit_CubeRemLit( uCube, 31 );     }
-
-static inline int          Kit_SopCubeNum( Kit_Sop_t * cSop )                             { return cSop->nCubes;                    }
-static inline unsigned     Kit_SopCube( Kit_Sop_t * cSop, int i )                         { return cSop->pCubes[i];                 }
-static inline void         Kit_SopShrink( Kit_Sop_t * cSop, int nCubesNew )               { cSop->nCubes = nCubesNew;               }
-static inline void         Kit_SopPushCube( Kit_Sop_t * cSop, unsigned uCube )            { cSop->pCubes[cSop->nCubes++] = uCube;   }
-static inline void         Kit_SopWriteCube( Kit_Sop_t * cSop, unsigned uCube, int i )    { cSop->pCubes[i] = uCube;                }
-
-static inline Kit_Edge_t   Kit_EdgeCreate( int Node, int fCompl )                         { Kit_Edge_t eEdge = { fCompl, Node }; return eEdge;  }
-static inline unsigned     Kit_EdgeToInt( Kit_Edge_t eEdge )                              { return (eEdge.Node << 1) | eEdge.fCompl;            }
-static inline Kit_Edge_t   Kit_IntToEdge( unsigned Edge )                                 { return Kit_EdgeCreate( Edge >> 1, Edge & 1 );       }
-static inline unsigned     Kit_EdgeToInt_( Kit_Edge_t eEdge )                             { return *(unsigned *)&eEdge;                         }
-static inline Kit_Edge_t   Kit_IntToEdge_( unsigned Edge )                                { return *(Kit_Edge_t *)&Edge;                        }
-
-static inline int          Kit_GraphIsConst( Kit_Graph_t * pGraph )                       { return pGraph->fConst;                              }
-static inline int          Kit_GraphIsConst0( Kit_Graph_t * pGraph )                      { return pGraph->fConst && pGraph->eRoot.fCompl;      }
-static inline int          Kit_GraphIsConst1( Kit_Graph_t * pGraph )                      { return pGraph->fConst && !pGraph->eRoot.fCompl;     }
-static inline int          Kit_GraphIsComplement( Kit_Graph_t * pGraph )                  { return pGraph->eRoot.fCompl;                        }
-static inline int          Kit_GraphIsVar( Kit_Graph_t * pGraph )                         { return pGraph->eRoot.Node < (unsigned)pGraph->nLeaves; }
-static inline void         Kit_GraphComplement( Kit_Graph_t * pGraph )                    { pGraph->eRoot.fCompl ^= 1;                          }
-static inline void         Kit_GraphSetRoot( Kit_Graph_t * pGraph, Kit_Edge_t eRoot )     { pGraph->eRoot = eRoot;                              }
-static inline int          Kit_GraphLeaveNum( Kit_Graph_t * pGraph )                      { return pGraph->nLeaves;                             }
-static inline int          Kit_GraphNodeNum( Kit_Graph_t * pGraph )                       { return pGraph->nSize - pGraph->nLeaves;             }
-static inline Kit_Node_t * Kit_GraphNode( Kit_Graph_t * pGraph, int i )                   { return pGraph->pNodes + i;                          }
-static inline Kit_Node_t * Kit_GraphNodeLast( Kit_Graph_t * pGraph )                      { return pGraph->pNodes + pGraph->nSize - 1;          }
-static inline int          Kit_GraphNodeInt( Kit_Graph_t * pGraph, Kit_Node_t * pNode )   { return pNode - pGraph->pNodes;                      }
-static inline int          Kit_GraphNodeIsVar( Kit_Graph_t * pGraph, Kit_Node_t * pNode ) { return Kit_GraphNodeInt(pGraph,pNode) < pGraph->nLeaves; }
-static inline Kit_Node_t * Kit_GraphVar( Kit_Graph_t * pGraph )                           { assert( Kit_GraphIsVar( pGraph ) );    return Kit_GraphNode( pGraph, pGraph->eRoot.Node );      }
-static inline int          Kit_GraphVarInt( Kit_Graph_t * pGraph )                        { assert( Kit_GraphIsVar( pGraph ) );    return Kit_GraphNodeInt( pGraph, Kit_GraphVar(pGraph) ); }
-static inline Kit_Node_t * Kit_GraphNodeFanin0( Kit_Graph_t * pGraph, Kit_Node_t * pNode ){ return Kit_GraphNodeIsVar(pGraph, pNode)? NULL : Kit_GraphNode(pGraph, pNode->eEdge0.Node);     }
-static inline Kit_Node_t * Kit_GraphNodeFanin1( Kit_Graph_t * pGraph, Kit_Node_t * pNode ){ return Kit_GraphNodeIsVar(pGraph, pNode)? NULL : Kit_GraphNode(pGraph, pNode->eEdge1.Node);     }
-static inline int          Kit_GraphRootLevel( Kit_Graph_t * pGraph )                     { return Kit_GraphNode(pGraph, pGraph->eRoot.Node)->Level;                                        }
-
-static inline int          Kit_Float2Int( float Val )     { return *((int *)&Val);               }
-static inline float        Kit_Int2Float( int Num )       { return *((float *)&Num);             }
-static inline int          Kit_BitWordNum( int nBits )    { return nBits/(8*sizeof(unsigned)) + ((nBits%(8*sizeof(unsigned))) > 0); }
-static inline int          Kit_TruthWordNum( int nVars )  { return nVars <= 5 ? 1 : (1 << (nVars - 5));                             }
-static inline unsigned     Kit_BitMask( int nBits )       { assert( nBits <= 32 ); return ~((~(unsigned)0) << nBits);               }
-
-static inline void         Kit_TruthSetBit( unsigned * p, int Bit )   { p[Bit>>5] |= (1<<(Bit & 31));               }
-static inline void         Kit_TruthXorBit( unsigned * p, int Bit )   { p[Bit>>5] ^= (1<<(Bit & 31));               }
-static inline int          Kit_TruthHasBit( unsigned * p, int Bit )   { return (p[Bit>>5] & (1<<(Bit & 31))) > 0;   }
-
-static inline int Kit_WordFindFirstBit( unsigned uWord )
-{
-    int i;
-    for ( i = 0; i < 32; i++ )
-        if ( uWord & (1 << i) )
-            return i;
-    return -1;
-}
-static inline int Kit_WordHasOneBit( unsigned uWord )
-{
-    return (uWord & (uWord - 1)) == 0;
-}
-static inline int Kit_WordCountOnes( unsigned uWord )
-{
-    uWord = (uWord & 0x55555555) + ((uWord>>1) & 0x55555555);
-    uWord = (uWord & 0x33333333) + ((uWord>>2) & 0x33333333);
-    uWord = (uWord & 0x0F0F0F0F) + ((uWord>>4) & 0x0F0F0F0F);
-    uWord = (uWord & 0x00FF00FF) + ((uWord>>8) & 0x00FF00FF);
-    return  (uWord & 0x0000FFFF) + (uWord>>16);
-}
-static inline int Kit_TruthCountOnes( unsigned * pIn, int nVars )
-{
-    int w, Counter = 0;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        Counter += Kit_WordCountOnes(pIn[w]);
-    return Counter;
-}
-static inline int Kit_TruthFindFirstBit( unsigned * pIn, int nVars )
-{
-    int w;
-    for ( w = 0; w < Kit_TruthWordNum(nVars); w++ )
-        if ( pIn[w] )
-            return 32*w + Kit_WordFindFirstBit(pIn[w]);
-    return -1;
-}
-static inline int Kit_TruthFindFirstZero( unsigned * pIn, int nVars )
-{
-    int w;
-    for ( w = 0; w < Kit_TruthWordNum(nVars); w++ )
-        if ( ~pIn[w] )
-            return 32*w + Kit_WordFindFirstBit(~pIn[w]);
-    return -1;
-}
-static inline int Kit_TruthIsEqual( unsigned * pIn0, unsigned * pIn1, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        if ( pIn0[w] != pIn1[w] )
-            return 0;
-    return 1;
-}
-static inline int Kit_TruthIsOpposite( unsigned * pIn0, unsigned * pIn1, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        if ( pIn0[w] != ~pIn1[w] )
-            return 0;
-    return 1;
-}
-static inline int Kit_TruthIsEqualWithPhase( unsigned * pIn0, unsigned * pIn1, int nVars )
-{
-    int w;
-    if ( (pIn0[0] & 1) == (pIn1[0] & 1) )
-    {
-        for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-            if ( pIn0[w] != pIn1[w] )
-                return 0;
-    }
-    else
-    {
-        for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-            if ( pIn0[w] != ~pIn1[w] )
-                return 0;
-    }
-    return 1;
-}
-static inline int Kit_TruthIsConst0( unsigned * pIn, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        if ( pIn[w] )
-            return 0;
-    return 1;
-}
-static inline int Kit_TruthIsConst1( unsigned * pIn, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        if ( pIn[w] != ~(unsigned)0 )
-            return 0;
-    return 1;
-}
-static inline int Kit_TruthIsImply( unsigned * pIn1, unsigned * pIn2, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        if ( pIn1[w] & ~pIn2[w] )
-            return 0;
-    return 1;
-}
-static inline int Kit_TruthIsDisjoint( unsigned * pIn1, unsigned * pIn2, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        if ( pIn1[w] & pIn2[w] )
-            return 0;
-    return 1;
-}
-static inline int Kit_TruthIsDisjoint3( unsigned * pIn1, unsigned * pIn2, unsigned * pIn3, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        if ( pIn1[w] & pIn2[w] & pIn3[w] )
-            return 0;
-    return 1;
-}
-static inline void Kit_TruthCopy( unsigned * pOut, unsigned * pIn, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = pIn[w];
-}
-static inline void Kit_TruthClear( unsigned * pOut, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = 0;
-}
-static inline void Kit_TruthFill( unsigned * pOut, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = ~(unsigned)0;
-}
-static inline void Kit_TruthNot( unsigned * pOut, unsigned * pIn, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = ~pIn[w];
-}
-static inline void Kit_TruthAnd( unsigned * pOut, unsigned * pIn0, unsigned * pIn1, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = pIn0[w] & pIn1[w];
-}
-static inline void Kit_TruthOr( unsigned * pOut, unsigned * pIn0, unsigned * pIn1, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = pIn0[w] | pIn1[w];
-}
-static inline void Kit_TruthXor( unsigned * pOut, unsigned * pIn0, unsigned * pIn1, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = pIn0[w] ^ pIn1[w];
-}
-static inline void Kit_TruthSharp( unsigned * pOut, unsigned * pIn0, unsigned * pIn1, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = pIn0[w] & ~pIn1[w];
-}
-static inline void Kit_TruthNand( unsigned * pOut, unsigned * pIn0, unsigned * pIn1, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = ~(pIn0[w] & pIn1[w]);
-}
-static inline void Kit_TruthAndPhase( unsigned * pOut, unsigned * pIn0, unsigned * pIn1, int nVars, int fCompl0, int fCompl1 )
-{
-    int w;
-    if ( fCompl0 && fCompl1 )
-    {
-        for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-            pOut[w] = ~(pIn0[w] | pIn1[w]);
-    }
-    else if ( fCompl0 && !fCompl1 )
-    {
-        for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-            pOut[w] = ~pIn0[w] & pIn1[w];
-    }
-    else if ( !fCompl0 && fCompl1 )
-    {
-        for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-            pOut[w] = pIn0[w] & ~pIn1[w];
-    }
-    else // if ( !fCompl0 && !fCompl1 )
-    {
-        for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-            pOut[w] = pIn0[w] & pIn1[w];
-    }
-}
-static inline void Kit_TruthMux( unsigned * pOut, unsigned * pIn0, unsigned * pIn1, unsigned * pCtrl, int nVars )
-{
-    int w;
-    for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-        pOut[w] = (pIn0[w] & ~pCtrl[w]) | (pIn1[w] & pCtrl[w]);
-}
-static inline void Kit_TruthMuxPhase( unsigned * pOut, unsigned * pIn0, unsigned * pIn1, unsigned * pCtrl, int nVars, int fComp0 )
-{
-    int w;
-    if ( fComp0 )
-        for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-            pOut[w] = (~pIn0[w] & ~pCtrl[w]) | (pIn1[w] & pCtrl[w]);
-    else
-        for ( w = Kit_TruthWordNum(nVars)-1; w >= 0; w-- )
-            pOut[w] = (pIn0[w] & ~pCtrl[w]) | (pIn1[w] & pCtrl[w]);
-}
-static inline void Kit_TruthIthVar( unsigned * pTruth, int nVars, int iVar )
-{
-    unsigned Masks[5] = { 0xAAAAAAAA, 0xCCCCCCCC, 0xF0F0F0F0, 0xFF00FF00, 0xFFFF0000 };
-    int k, nWords = (nVars <= 5 ? 1 : (1 << (nVars - 5)));
-    if ( iVar < 5 )
-    {
-        for ( k = 0; k < nWords; k++ )
-            pTruth[k] = Masks[iVar];
-    }
-    else
-    {
-        for ( k = 0; k < nWords; k++ )
-            if ( k & (1 << (iVar-5)) )
-                pTruth[k] = ~(unsigned)0;
-            else
-                pTruth[k] = 0;
-    }
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                           ITERATORS                              ///
-////////////////////////////////////////////////////////////////////////
-
-#define Kit_SopForEachCube( cSop, uCube, i )                                      \
-    for ( i = 0; (i < Kit_SopCubeNum(cSop)) && ((uCube) = Kit_SopCube(cSop, i)); i++ )
-#define Kit_CubeForEachLiteral( uCube, Lit, nLits, i )                            \
-    for ( i = 0; (i < (nLits)) && ((Lit) = Kit_CubeHasLit(uCube, i)); i++ )
-
-#define Kit_GraphForEachLeaf( pGraph, pLeaf, i )                                              \
-    for ( i = 0; (i < (pGraph)->nLeaves) && (((pLeaf) = Kit_GraphNode(pGraph, i)), 1); i++ )
-#define Kit_GraphForEachNode( pGraph, pAnd, i )                                               \
-    for ( i = (pGraph)->nLeaves; (i < (pGraph)->nSize) && (((pAnd) = Kit_GraphNode(pGraph, i)), 1); i++ )
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== kitBdd.c ==========================================================*/
-extern DdNode *        Kit_SopToBdd( DdManager * dd, Kit_Sop_t * cSop, int nVars );
-extern DdNode *        Kit_GraphToBdd( DdManager * dd, Kit_Graph_t * pGraph );
-extern DdNode *        Kit_TruthToBdd( DdManager * dd, unsigned * pTruth, int nVars, int fMSBonTop );
-/*=== kitCloud.c ==========================================================*/
-extern CloudNode *     Kit_TruthToCloud( CloudManager * dd, unsigned * pTruth, int nVars );
-extern unsigned *      Kit_CloudToTruth( Vec_Int_t * vNodes, int nVars, Vec_Ptr_t * vStore, int fInv );
-extern int             Kit_CreateCloud( CloudManager * dd, CloudNode * pFunc, Vec_Int_t * vNodes );
-extern int             Kit_CreateCloudFromTruth( CloudManager * dd, unsigned * pTruth, int nVars, Vec_Int_t * vNodes );
-extern unsigned *      Kit_TruthCompose( CloudManager * dd, unsigned * pTruth, int nVars, unsigned ** pInputs, int nVarsAll, Vec_Ptr_t * vStore, Vec_Int_t * vNodes );
-extern void            Kit_TruthCofSupports( Vec_Int_t * vBddDir, Vec_Int_t * vBddInv, int nVars, Vec_Int_t * vMemory, unsigned * puSupps );
-/*=== kitDsd.c ==========================================================*/
-extern Kit_DsdMan_t *  Kit_DsdManAlloc( int nVars, int nNodes );
-extern void            Kit_DsdManFree( Kit_DsdMan_t * p );
-extern Kit_DsdNtk_t *  Kit_DsdDeriveNtk( unsigned * pTruth, int nVars, int nLutSize );
-extern unsigned *      Kit_DsdTruthCompute( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk );
-extern void            Kit_DsdTruth( Kit_DsdNtk_t * pNtk, unsigned * pTruthRes );
-extern void            Kit_DsdTruthPartial( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk, unsigned * pTruthRes, unsigned uSupp );
-extern void            Kit_DsdTruthPartialTwo( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk, unsigned uSupp, int iVar, unsigned * pTruthCo, unsigned * pTruthDec );
-extern void            Kit_DsdPrint( FILE * pFile, Kit_DsdNtk_t * pNtk );
-extern void            Kit_DsdPrintExpanded( Kit_DsdNtk_t * pNtk );
-extern void            Kit_DsdPrintFromTruth( unsigned * pTruth, int nVars );
-extern Kit_DsdNtk_t *  Kit_DsdDecompose( unsigned * pTruth, int nVars );
-extern Kit_DsdNtk_t *  Kit_DsdDecomposeExpand( unsigned * pTruth, int nVars );
-extern Kit_DsdNtk_t *  Kit_DsdDecomposeMux( unsigned * pTruth, int nVars, int nDecMux );
-extern void            Kit_DsdVerify( Kit_DsdNtk_t * pNtk, unsigned * pTruth, int nVars );
-extern void            Kit_DsdNtkFree( Kit_DsdNtk_t * pNtk );
-extern int             Kit_DsdNonDsdSizeMax( Kit_DsdNtk_t * pNtk );
-extern unsigned        Kit_DsdNonDsdSupports( Kit_DsdNtk_t * pNtk );
-extern unsigned        Kit_DsdGetSupports( Kit_DsdNtk_t * p );
-extern Kit_DsdNtk_t *  Kit_DsdExpand( Kit_DsdNtk_t * p );
-extern Kit_DsdNtk_t *  Kit_DsdShrink( Kit_DsdNtk_t * p, int pPrios[] );
-extern void            Kit_DsdRotate( Kit_DsdNtk_t * p, int pFreqs[] );
-extern int             Kit_DsdCofactoring( unsigned * pTruth, int nVars, int * pCofVars, int nLimit, int fVerbose );
-/*=== kitFactor.c ==========================================================*/
-extern Kit_Graph_t *   Kit_SopFactor( Vec_Int_t * vCover, int fCompl, int nVars, Vec_Int_t * vMemory );
-/*=== kitGraph.c ==========================================================*/
-extern Kit_Graph_t *   Kit_GraphCreate( int nLeaves );   
-extern Kit_Graph_t *   Kit_GraphCreateConst0();   
-extern Kit_Graph_t *   Kit_GraphCreateConst1();   
-extern Kit_Graph_t *   Kit_GraphCreateLeaf( int iLeaf, int nLeaves, int fCompl );   
-extern void            Kit_GraphFree( Kit_Graph_t * pGraph );   
-extern Kit_Node_t *    Kit_GraphAppendNode( Kit_Graph_t * pGraph );   
-extern Kit_Edge_t      Kit_GraphAddNodeAnd( Kit_Graph_t * pGraph, Kit_Edge_t eEdge0, Kit_Edge_t eEdge1 );
-extern Kit_Edge_t      Kit_GraphAddNodeOr( Kit_Graph_t * pGraph, Kit_Edge_t eEdge0, Kit_Edge_t eEdge1 );
-extern Kit_Edge_t      Kit_GraphAddNodeXor( Kit_Graph_t * pGraph, Kit_Edge_t eEdge0, Kit_Edge_t eEdge1, int Type );
-extern Kit_Edge_t      Kit_GraphAddNodeMux( Kit_Graph_t * pGraph, Kit_Edge_t eEdgeC, Kit_Edge_t eEdgeT, Kit_Edge_t eEdgeE, int Type );
-extern unsigned        Kit_GraphToTruth( Kit_Graph_t * pGraph );
-extern Kit_Graph_t *   Kit_TruthToGraph( unsigned * pTruth, int nVars, Vec_Int_t * vMemory );
-extern int             Kit_GraphLeafDepth_rec( Kit_Graph_t * pGraph, Kit_Node_t * pNode, Kit_Node_t * pLeaf );
-/*=== kitHop.c ==========================================================*/
-//extern Hop_Obj_t *     Kit_GraphToHop( Hop_Man_t * pMan, Kit_Graph_t * pGraph );
-//extern Hop_Obj_t *     Kit_TruthToHop( Hop_Man_t * pMan, unsigned * pTruth, int nVars, Vec_Int_t * vMemory );
-//extern Hop_Obj_t *     Kit_CoverToHop( Hop_Man_t * pMan, Vec_Int_t * vCover, int nVars, Vec_Int_t * vMemory );
-/*=== kitIsop.c ==========================================================*/
-extern int             Kit_TruthIsop( unsigned * puTruth, int nVars, Vec_Int_t * vMemory, int fTryBoth );
-/*=== kitSop.c ==========================================================*/
-extern void            Kit_SopCreate( Kit_Sop_t * cResult, Vec_Int_t * vInput, int nVars, Vec_Int_t * vMemory );
-extern void            Kit_SopCreateInverse( Kit_Sop_t * cResult, Vec_Int_t * vInput, int nVars, Vec_Int_t * vMemory );
-extern void            Kit_SopDup( Kit_Sop_t * cResult, Kit_Sop_t * cSop, Vec_Int_t * vMemory );
-extern void            Kit_SopDivideByLiteralQuo( Kit_Sop_t * cSop, int iLit );
-extern void            Kit_SopDivideByCube( Kit_Sop_t * cSop, Kit_Sop_t * cDiv, Kit_Sop_t * vQuo, Kit_Sop_t * vRem, Vec_Int_t * vMemory );
-extern void            Kit_SopDivideInternal( Kit_Sop_t * cSop, Kit_Sop_t * cDiv, Kit_Sop_t * vQuo, Kit_Sop_t * vRem, Vec_Int_t * vMemory );
-extern void            Kit_SopMakeCubeFree( Kit_Sop_t * cSop );
-extern int             Kit_SopIsCubeFree( Kit_Sop_t * cSop );
-extern void            Kit_SopCommonCubeCover( Kit_Sop_t * cResult, Kit_Sop_t * cSop, Vec_Int_t * vMemory );
-extern int             Kit_SopAnyLiteral( Kit_Sop_t * cSop, int nLits );
-extern int             Kit_SopDivisor( Kit_Sop_t * cResult, Kit_Sop_t * cSop, int nLits, Vec_Int_t * vMemory );
-extern void            Kit_SopBestLiteralCover( Kit_Sop_t * cResult, Kit_Sop_t * cSop, unsigned uCube, int nLits, Vec_Int_t * vMemory );
-/*=== kitTruth.c ==========================================================*/
-extern void            Kit_TruthSwapAdjacentVars( unsigned * pOut, unsigned * pIn, int nVars, int Start );
-extern void            Kit_TruthStretch( unsigned * pOut, unsigned * pIn, int nVars, int nVarsAll, unsigned Phase, int fReturnIn );
-extern void            Kit_TruthShrink( unsigned * pOut, unsigned * pIn, int nVars, int nVarsAll, unsigned Phase, int fReturnIn );
-extern int             Kit_TruthVarInSupport( unsigned * pTruth, int nVars, int iVar );
-extern int             Kit_TruthSupportSize( unsigned * pTruth, int nVars );
-extern unsigned        Kit_TruthSupport( unsigned * pTruth, int nVars );
-extern void            Kit_TruthCofactor0( unsigned * pTruth, int nVars, int iVar );
-extern void            Kit_TruthCofactor1( unsigned * pTruth, int nVars, int iVar );
-extern void            Kit_TruthCofactor0New( unsigned * pOut, unsigned * pIn, int nVars, int iVar );
-extern void            Kit_TruthCofactor1New( unsigned * pOut, unsigned * pIn, int nVars, int iVar );
-extern void            Kit_TruthExist( unsigned * pTruth, int nVars, int iVar );
-extern void            Kit_TruthExistNew( unsigned * pRes, unsigned * pTruth, int nVars, int iVar );
-extern void            Kit_TruthExistSet( unsigned * pRes, unsigned * pTruth, int nVars, unsigned uMask );
-extern void            Kit_TruthForall( unsigned * pTruth, int nVars, int iVar );
-extern void            Kit_TruthForallNew( unsigned * pRes, unsigned * pTruth, int nVars, int iVar );
-extern void            Kit_TruthForallSet( unsigned * pRes, unsigned * pTruth, int nVars, unsigned uMask );
-extern void            Kit_TruthUniqueNew( unsigned * pRes, unsigned * pTruth, int nVars, int iVar );
-extern void            Kit_TruthMuxVar( unsigned * pOut, unsigned * pCof0, unsigned * pCof1, int nVars, int iVar );
-extern void            Kit_TruthMuxVarPhase( unsigned * pOut, unsigned * pCof0, unsigned * pCof1, int nVars, int iVar, int fCompl0 );
-extern void            Kit_TruthChangePhase( unsigned * pTruth, int nVars, int iVar );
-extern int             Kit_TruthMinCofSuppOverlap( unsigned * pTruth, int nVars, int * pVarMin );
-extern int             Kit_TruthBestCofVar( unsigned * pTruth, int nVars, unsigned * pCof0, unsigned * pCof1 );
-extern void            Kit_TruthCountOnesInCofs( unsigned * pTruth, int nVars, short * pStore );
-extern void            Kit_TruthCountOnesInCofsSlow( unsigned * pTruth, int nVars, short * pStore, unsigned * pAux );
-extern unsigned        Kit_TruthHash( unsigned * pIn, int nWords );
-extern unsigned        Kit_TruthSemiCanonicize( unsigned * pInOut, unsigned * pAux, int nVars, char * pCanonPerm, short * pStore );
-extern char *          Kit_TruthDumpToFile( unsigned * pTruth, int nVars, int nFile );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/kit/kitAig.c b/src/aig/kit/kitAig.c
deleted file mode 100644
index 0d5c1686..00000000
--- a/src/aig/kit/kitAig.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitAig.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [Procedures involving AIGs.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitAig.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-#include "aig.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Transforms the decomposition graph into the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Kit_GraphToAigInternal( Aig_Man_t * pMan, Kit_Graph_t * pGraph )
-{
-    Kit_Node_t * pNode;
-    Aig_Obj_t * pAnd0, * pAnd1;
-    int i;
-    // check for constant function
-    if ( Kit_GraphIsConst(pGraph) )
-        return Aig_NotCond( Aig_ManConst1(pMan), Kit_GraphIsComplement(pGraph) );
-    // check for a literal
-    if ( Kit_GraphIsVar(pGraph) )
-        return Aig_NotCond( Kit_GraphVar(pGraph)->pFunc, Kit_GraphIsComplement(pGraph) );
-    // build the AIG nodes corresponding to the AND gates of the graph
-    Kit_GraphForEachNode( pGraph, pNode, i )
-    {
-        pAnd0 = Aig_NotCond( Kit_GraphNode(pGraph, pNode->eEdge0.Node)->pFunc, pNode->eEdge0.fCompl ); 
-        pAnd1 = Aig_NotCond( Kit_GraphNode(pGraph, pNode->eEdge1.Node)->pFunc, pNode->eEdge1.fCompl ); 
-        pNode->pFunc = Aig_And( pMan, pAnd0, pAnd1 );
-    }
-    // complement the result if necessary
-    return Aig_NotCond( pNode->pFunc, Kit_GraphIsComplement(pGraph) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Strashes one logic node using its SOP.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Kit_GraphToAig( Aig_Man_t * pMan, Aig_Obj_t ** pFanins, Kit_Graph_t * pGraph )
-{
-    Kit_Node_t * pNode;
-    int i;
-    // collect the fanins
-    Kit_GraphForEachLeaf( pGraph, pNode, i )
-        pNode->pFunc = pFanins[i];
-    // perform strashing
-    return Kit_GraphToAigInternal( pMan, pGraph );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Strashed onen logic nodes using its truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Aig_Obj_t * Kit_TruthToAig( Aig_Man_t * pMan, Aig_Obj_t ** pFanins, unsigned * pTruth, int nVars, Vec_Int_t * vMemory )
-{
-    Aig_Obj_t * pObj;
-    Kit_Graph_t * pGraph;
-    // transform truth table into the decomposition tree
-    if ( vMemory == NULL )
-    {
-        vMemory = Vec_IntAlloc( 0 );
-        pGraph = Kit_TruthToGraph( pTruth, nVars, vMemory );
-        Vec_IntFree( vMemory );
-    }
-    else
-        pGraph = Kit_TruthToGraph( pTruth, nVars, vMemory );
-    // derive the AIG for the decomposition tree
-    pObj = Kit_GraphToAig( pMan, pFanins, pGraph );
-    Kit_GraphFree( pGraph );
-    return pObj;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/kitBdd.c b/src/aig/kit/kitBdd.c
deleted file mode 100644
index 9c8d4f7a..00000000
--- a/src/aig/kit/kitBdd.c
+++ /dev/null
@@ -1,231 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitBdd.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [Procedures involving BDDs.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitBdd.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-#include "extra.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the BDD for the given SOP.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-DdNode * Kit_SopToBdd( DdManager * dd, Kit_Sop_t * cSop, int nVars )
-{
-    DdNode * bSum, * bCube, * bTemp, * bVar;
-    unsigned uCube;
-    int Value, i, v;
-    assert( nVars < 16 );
-    // start the cover
-    bSum = Cudd_ReadLogicZero(dd);   Cudd_Ref( bSum );
-   // check the logic function of the node
-    Kit_SopForEachCube( cSop, uCube, i )
-    {
-        bCube = Cudd_ReadOne(dd);   Cudd_Ref( bCube );
-        for ( v = 0; v < nVars; v++ )
-        {
-            Value = ((uCube >> 2*v) & 3);
-            if ( Value == 1 )
-                bVar = Cudd_Not( Cudd_bddIthVar( dd, v ) );
-            else if ( Value == 2 )
-                bVar = Cudd_bddIthVar( dd, v );
-            else
-                continue;
-            bCube  = Cudd_bddAnd( dd, bTemp = bCube, bVar );   Cudd_Ref( bCube );
-            Cudd_RecursiveDeref( dd, bTemp );
-        }
-        bSum = Cudd_bddOr( dd, bTemp = bSum, bCube );   
-        Cudd_Ref( bSum );
-        Cudd_RecursiveDeref( dd, bTemp );
-        Cudd_RecursiveDeref( dd, bCube );
-    }
-    // complement the result if necessary
-    Cudd_Deref( bSum );
-    return bSum;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Converts graph to BDD.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-DdNode * Kit_GraphToBdd( DdManager * dd, Kit_Graph_t * pGraph )
-{
-    DdNode * bFunc, * bFunc0, * bFunc1;
-    Kit_Node_t * pNode;
-    int i;
-
-    // sanity checks
-    assert( Kit_GraphLeaveNum(pGraph) >= 0 );
-    assert( Kit_GraphLeaveNum(pGraph) <= pGraph->nSize );
-
-    // check for constant function
-    if ( Kit_GraphIsConst(pGraph) )
-        return Cudd_NotCond( b1, Kit_GraphIsComplement(pGraph) );
-    // check for a literal
-    if ( Kit_GraphIsVar(pGraph) )
-        return Cudd_NotCond( Cudd_bddIthVar(dd, Kit_GraphVarInt(pGraph)), Kit_GraphIsComplement(pGraph) );
-
-    // assign the elementary variables
-    Kit_GraphForEachLeaf( pGraph, pNode, i )
-        pNode->pFunc = Cudd_bddIthVar( dd, i );
-
-    // compute the function for each internal node
-    Kit_GraphForEachNode( pGraph, pNode, i )
-    {
-        bFunc0 = Cudd_NotCond( Kit_GraphNode(pGraph, pNode->eEdge0.Node)->pFunc, pNode->eEdge0.fCompl ); 
-        bFunc1 = Cudd_NotCond( Kit_GraphNode(pGraph, pNode->eEdge1.Node)->pFunc, pNode->eEdge1.fCompl ); 
-        pNode->pFunc = Cudd_bddAnd( dd, bFunc0, bFunc1 );   Cudd_Ref( pNode->pFunc );
-    }
-
-    // deref the intermediate results
-    bFunc = pNode->pFunc;   Cudd_Ref( bFunc );
-    Kit_GraphForEachNode( pGraph, pNode, i )
-        Cudd_RecursiveDeref( dd, pNode->pFunc );
-    Cudd_Deref( bFunc );
-
-    // complement the result if necessary
-    return Cudd_NotCond( bFunc, Kit_GraphIsComplement(pGraph) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-DdNode * Kit_TruthToBdd_rec( DdManager * dd, unsigned * pTruth, int iBit, int nVars, int nVarsTotal, int fMSBonTop )
-{
-    DdNode * bF0, * bF1, * bF;
-    int Var;
-    if ( nVars <= 5 )
-    {
-        unsigned uTruth, uMask;
-        uMask = ((~(unsigned)0) >> (32 - (1<<nVars)));
-        uTruth = (pTruth[iBit>>5] >> (iBit&31)) & uMask;
-        if ( uTruth == 0 )
-            return b0;
-        if ( uTruth == uMask )
-            return b1;        
-    }
-    // find the variable to use
-    Var = fMSBonTop? nVarsTotal-nVars : nVars-1;
-    // other special cases can be added
-    bF0 = Kit_TruthToBdd_rec( dd, pTruth, iBit,                nVars-1, nVarsTotal, fMSBonTop );  Cudd_Ref( bF0 );
-    bF1 = Kit_TruthToBdd_rec( dd, pTruth, iBit+(1<<(nVars-1)), nVars-1, nVarsTotal, fMSBonTop );  Cudd_Ref( bF1 );
-    bF  = Cudd_bddIte( dd, dd->vars[Var], bF1, bF0 );                     Cudd_Ref( bF );
-    Cudd_RecursiveDeref( dd, bF0 );
-    Cudd_RecursiveDeref( dd, bF1 );
-    Cudd_Deref( bF );
-    return bF;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compute BDD corresponding to the truth table.]
-
-  Description [If truth table has N vars, the BDD depends on N topmost
-  variables of the BDD manager. The most significant variable of the table
-  is encoded by the topmost variable of the manager. BDD construction is 
-  efficient in this case because BDD is constructed one node at a time, 
-  by simply adding BDD nodes on top of existent BDD nodes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-DdNode * Kit_TruthToBdd( DdManager * dd, unsigned * pTruth, int nVars, int fMSBonTop )
-{
-    return Kit_TruthToBdd_rec( dd, pTruth, 0, nVars, nVars, fMSBonTop );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Verifies that the factoring is correct.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_SopFactorVerify( Vec_Int_t * vCover, Kit_Graph_t * pFForm, int nVars )
-{
-    static DdManager * dd = NULL;
-    Kit_Sop_t Sop, * cSop = &Sop;
-    DdNode * bFunc1, * bFunc2;
-    Vec_Int_t * vMemory;
-    int RetValue;
-    // get the manager
-    if ( dd == NULL )
-        dd = Cudd_Init( 16, 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 );
-    // derive SOP
-    vMemory = Vec_IntAlloc( Vec_IntSize(vCover) );
-    Kit_SopCreate( cSop, vCover, nVars, vMemory );
-    // get the functions
-    bFunc1 = Kit_SopToBdd( dd, cSop, nVars );      Cudd_Ref( bFunc1 );
-    bFunc2 = Kit_GraphToBdd( dd, pFForm );         Cudd_Ref( bFunc2 );
-//Extra_bddPrint( dd, bFunc1 ); printf("\n");
-//Extra_bddPrint( dd, bFunc2 ); printf("\n");
-    RetValue = (bFunc1 == bFunc2);
-    if ( bFunc1 != bFunc2 )
-    {
-        int s;
-        Extra_bddPrint( dd, bFunc1 ); printf("\n");
-        Extra_bddPrint( dd, bFunc2 ); printf("\n");
-        s  = 0;
-    }
-    Cudd_RecursiveDeref( dd, bFunc1 );
-    Cudd_RecursiveDeref( dd, bFunc2 );
-    Vec_IntFree( vMemory );
-    return RetValue;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/kitCloud.c b/src/aig/kit/kitCloud.c
deleted file mode 100644
index 7b160fea..00000000
--- a/src/aig/kit/kitCloud.c
+++ /dev/null
@@ -1,368 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitCloud.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [Procedures using BDD package CLOUD.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitCloud.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// internal representation of the function to be decomposed
-typedef struct Kit_Mux_t_ Kit_Mux_t;
-struct Kit_Mux_t_
-{
-    unsigned      v  :  5;          // variable 
-    unsigned      t  : 12;          // then edge
-    unsigned      e  : 12;          // else edge
-    unsigned      c  :  1;          // complemented attr of else edge
-    unsigned      i  :  1;          // complemented attr of top node
-};
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Derive BDD from the truth table for 5 variable functions.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-CloudNode * Kit_TruthToCloud5_rec( CloudManager * dd, unsigned uTruth, int nVars, int nVarsAll )
-{
-    static unsigned uVars[5] = { 0xAAAAAAAA, 0xCCCCCCCC, 0xF0F0F0F0, 0xFF00FF00, 0xFFFF0000 };
-    CloudNode * pCof0, * pCof1;
-    unsigned uCof0, uCof1;
-    assert( nVars <= 5 );
-    if ( uTruth == 0 )
-        return dd->zero;
-    if ( uTruth == ~0 )
-        return dd->one;
-    if ( nVars == 1 )
-    {
-        if ( uTruth == uVars[0] )
-            return dd->vars[nVarsAll-1];
-        if ( uTruth == ~uVars[0] )
-            return Cloud_Not(dd->vars[nVarsAll-1]);
-        assert( 0 );
-    }
-//    Count++;
-    assert( nVars > 1 );
-    uCof0 = uTruth & ~uVars[nVars-1];
-    uCof1 = uTruth &  uVars[nVars-1];
-    uCof0 |= uCof0 << (1<<(nVars-1));
-    uCof1 |= uCof1 >> (1<<(nVars-1));
-    if ( uCof0 == uCof1 )
-        return Kit_TruthToCloud5_rec( dd, uCof0, nVars - 1, nVarsAll );
-    if ( uCof0 == ~uCof1 )
-    {
-        pCof0 = Kit_TruthToCloud5_rec( dd, uCof0, nVars - 1, nVarsAll );
-        pCof1 = Cloud_Not( pCof0 );
-    }
-    else
-    {
-        pCof0 = Kit_TruthToCloud5_rec( dd, uCof0, nVars - 1, nVarsAll );
-        pCof1 = Kit_TruthToCloud5_rec( dd, uCof1, nVars - 1, nVarsAll );
-    }
-    return Cloud_MakeNode( dd, nVarsAll - nVars, pCof1, pCof0 );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Compute BDD for the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudNode * Kit_TruthToCloud_rec( CloudManager * dd, unsigned * pTruth, int nVars, int nVarsAll )
-{
-    CloudNode * pCof0, * pCof1;
-    unsigned * pTruth0, * pTruth1;
-    if ( nVars <= 5 )
-        return Kit_TruthToCloud5_rec( dd, pTruth[0], nVars, nVarsAll );
-    if ( Kit_TruthIsConst0(pTruth, nVars) )
-        return dd->zero;
-    if ( Kit_TruthIsConst1(pTruth, nVars) )
-        return dd->one;
-//    Count++;
-    pTruth0 = pTruth;
-    pTruth1 = pTruth + Kit_TruthWordNum(nVars-1);
-    if ( Kit_TruthIsEqual( pTruth0, pTruth1, nVars - 1 ) )
-        return Kit_TruthToCloud_rec( dd, pTruth0, nVars - 1, nVarsAll );
-    if ( Kit_TruthIsOpposite( pTruth0, pTruth1, nVars - 1 ) )
-    {
-        pCof0 = Kit_TruthToCloud_rec( dd, pTruth0, nVars - 1, nVarsAll );
-        pCof1 = Cloud_Not( pCof0 );
-    }
-    else
-    {
-        pCof0 = Kit_TruthToCloud_rec( dd, pTruth0, nVars - 1, nVarsAll );
-        pCof1 = Kit_TruthToCloud_rec( dd, pTruth1, nVars - 1, nVarsAll );
-    }
-    return Cloud_MakeNode( dd, nVarsAll - nVars, pCof1, pCof0 );
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Compute BDD for the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-CloudNode * Kit_TruthToCloud( CloudManager * dd, unsigned * pTruth, int nVars )
-{
-    CloudNode * pRes;
-    pRes = Kit_TruthToCloud_rec( dd, pTruth, nVars, nVars );
-//    printf( "%d/%d  ", Count, Cloud_DagSize(dd, pRes) );
-    return pRes;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Transforms the array of BDDs into the integer array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-int Kit_CreateCloud( CloudManager * dd, CloudNode * pFunc, Vec_Int_t * vNodes )
-{
-    Kit_Mux_t Mux;
-    int nNodes, i;
-    // collect BDD nodes
-    nNodes = Cloud_DagCollect( dd, pFunc );
-    if ( nNodes >= (1<<12) ) // because in Kit_Mux_t edge is 12 bit
-        return 0;
-    assert( nNodes == Cloud_DagSize( dd, pFunc ) );
-    assert( nNodes < dd->nNodesLimit );
-    Vec_IntClear( vNodes );
-    Vec_IntPush( vNodes, 0 ); // const1 node
-    dd->ppNodes[0]->s = 0;
-    for ( i = 1; i < nNodes; i++ )
-    {
-        dd->ppNodes[i]->s = i;
-        Mux.v = dd->ppNodes[i]->v;
-        Mux.t = dd->ppNodes[i]->t->s;
-        Mux.e = Cloud_Regular(dd->ppNodes[i]->e)->s;
-        Mux.c = Cloud_IsComplement(dd->ppNodes[i]->e); 
-        Mux.i = (i == nNodes - 1)? Cloud_IsComplement(pFunc) : 0;
-        // put the MUX into the array
-        Vec_IntPush( vNodes, *((int *)&Mux) );
-    }
-    assert( Vec_IntSize(vNodes) == nNodes );
-    // reset signatures
-    for ( i = 0; i < nNodes; i++ )
-        dd->ppNodes[i]->s = dd->nSignCur;
-    return 1;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Transforms the array of BDDs into the integer array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-int Kit_CreateCloudFromTruth( CloudManager * dd, unsigned * pTruth, int nVars, Vec_Int_t * vNodes )
-{
-    CloudNode * pFunc;
-    Cloud_Restart( dd );
-    pFunc = Kit_TruthToCloud( dd, pTruth, nVars );
-    Vec_IntClear( vNodes );
-    return Kit_CreateCloud( dd, pFunc, vNodes );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes composition of truth tables.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Kit_CloudToTruth( Vec_Int_t * vNodes, int nVars, Vec_Ptr_t * vStore, int fInv )
-{
-    unsigned * pThis, * pFan0, * pFan1;
-    Kit_Mux_t Mux;
-    int i, Entry;
-    assert( Vec_IntSize(vNodes) <= Vec_PtrSize(vStore) );
-    pThis = Vec_PtrEntry( vStore, 0 );
-    Kit_TruthFill( pThis, nVars );
-    Vec_IntForEachEntryStart( vNodes, Entry, i, 1 )
-    {
-        Mux = *((Kit_Mux_t *)&Entry);
-        assert( (int)Mux.e < i && (int)Mux.t < i && (int)Mux.v < nVars );          
-        pFan0 = Vec_PtrEntry( vStore, Mux.e );
-        pFan1 = Vec_PtrEntry( vStore, Mux.t );
-        pThis = Vec_PtrEntry( vStore, i );
-        Kit_TruthMuxVarPhase( pThis, pFan0, pFan1, nVars, fInv? Mux.v : nVars-1-Mux.v, Mux.c );
-    } 
-    // complement the result
-    if ( Mux.i )
-        Kit_TruthNot( pThis, pThis, nVars );
-    return pThis;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes composition of truth tables.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Kit_TruthCompose( CloudManager * dd, unsigned * pTruth, int nVars, 
-    unsigned ** pInputs, int nVarsAll, Vec_Ptr_t * vStore, Vec_Int_t * vNodes )
-{
-    CloudNode * pFunc;
-    unsigned * pThis, * pFan0, * pFan1;
-    Kit_Mux_t Mux;
-    int i, Entry, RetValue;
-    // derive BDD from truth table
-    Cloud_Restart( dd );
-    pFunc = Kit_TruthToCloud( dd, pTruth, nVars );
-    // convert it into nodes
-    RetValue = Kit_CreateCloud( dd, pFunc, vNodes );
-    if ( RetValue == 0 )
-        printf( "Kit_TruthCompose(): Internal failure!!!\n" );
-    // verify the result
-//    pFan0 = Kit_CloudToTruth( vNodes, nVars, vStore, 0 );
-//    if ( !Kit_TruthIsEqual( pTruth, pFan0, nVars ) )
-//        printf( "Failed!\n" );
-    // compute truth table from the BDD
-    assert( Vec_IntSize(vNodes) <= Vec_PtrSize(vStore) );
-    pThis = Vec_PtrEntry( vStore, 0 );
-    Kit_TruthFill( pThis, nVarsAll );
-    Vec_IntForEachEntryStart( vNodes, Entry, i, 1 )
-    {
-        Mux = *((Kit_Mux_t *)&Entry);
-        pFan0 = Vec_PtrEntry( vStore, Mux.e );
-        pFan1 = Vec_PtrEntry( vStore, Mux.t );
-        pThis = Vec_PtrEntry( vStore, i );
-        Kit_TruthMuxPhase( pThis, pFan0, pFan1, pInputs[nVars-1-Mux.v], nVarsAll, Mux.c );
-    }
-    // complement the result
-    if ( Mux.i )
-        Kit_TruthNot( pThis, pThis, nVarsAll );
-    return pThis;
-}
-
-/**Function********************************************************************
-
-  Synopsis    [Compute BDD for the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-******************************************************************************/
-void Kit_TruthCofSupports( Vec_Int_t * vBddDir, Vec_Int_t * vBddInv, int nVars, Vec_Int_t * vMemory, unsigned * puSupps )
-{
-    Kit_Mux_t Mux;
-    unsigned * puSuppAll, * pThis, * pFan0, * pFan1;
-    int i, v, Var, Entry, nSupps;
-    nSupps = 2 * nVars;
-
-    // extend storage
-    if ( Vec_IntSize( vMemory ) < nSupps * Vec_IntSize(vBddDir) )
-        Vec_IntGrow( vMemory, nSupps * Vec_IntSize(vBddDir) );
-    puSuppAll = Vec_IntArray( vMemory );
-    // clear storage for the const node
-    memset( puSuppAll, 0, sizeof(unsigned) * nSupps );
-    // compute supports from nodes
-    Vec_IntForEachEntryStart( vBddDir, Entry, i, 1 )
-    {
-        Mux = *((Kit_Mux_t *)&Entry);
-        Var = nVars - 1 - Mux.v;
-        pFan0 = puSuppAll + nSupps * Mux.e;
-        pFan1 = puSuppAll + nSupps * Mux.t;
-        pThis = puSuppAll + nSupps * i;
-        for ( v = 0; v < nSupps; v++ )
-            pThis[v] = pFan0[v] | pFan1[v] | (1<<Var);
-        assert( pFan0[2*Var + 0] == pFan0[2*Var + 1] );
-        assert( pFan1[2*Var + 0] == pFan1[2*Var + 1] );
-        pThis[2*Var + 0] = pFan0[2*Var + 0];// | pFan0[2*Var + 1];
-        pThis[2*Var + 1] = pFan1[2*Var + 0];// | pFan1[2*Var + 1];
-    }
-    // copy the result
-    memcpy( puSupps, pThis, sizeof(unsigned) * nSupps );
-    // compute the inverse
-
-    // extend storage
-    if ( Vec_IntSize( vMemory ) < nSupps * Vec_IntSize(vBddInv) )
-        Vec_IntGrow( vMemory, nSupps * Vec_IntSize(vBddInv) );
-    puSuppAll = Vec_IntArray( vMemory );
-    // clear storage for the const node
-    memset( puSuppAll, 0, sizeof(unsigned) * nSupps );
-    // compute supports from nodes
-    Vec_IntForEachEntryStart( vBddInv, Entry, i, 1 )
-    {
-        Mux = *((Kit_Mux_t *)&Entry);
-//        Var = nVars - 1 - Mux.v;
-        Var = Mux.v;
-        pFan0 = puSuppAll + nSupps * Mux.e;
-        pFan1 = puSuppAll + nSupps * Mux.t;
-        pThis = puSuppAll + nSupps * i;
-        for ( v = 0; v < nSupps; v++ )
-            pThis[v] = pFan0[v] | pFan1[v] | (1<<Var);
-        assert( pFan0[2*Var + 0] == pFan0[2*Var + 1] );
-        assert( pFan1[2*Var + 0] == pFan1[2*Var + 1] );
-        pThis[2*Var + 0] = pFan0[2*Var + 0];// | pFan0[2*Var + 1];
-        pThis[2*Var + 1] = pFan1[2*Var + 0];// | pFan1[2*Var + 1];
-    }
-
-    // merge supports
-    for ( Var = 0; Var < nSupps; Var++ )
-        puSupps[Var] = (puSupps[Var] & Kit_BitMask(Var/2)) | (pThis[Var] & ~Kit_BitMask(Var/2));
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/kitDsd.c b/src/aig/kit/kitDsd.c
deleted file mode 100644
index e24a9964..00000000
--- a/src/aig/kit/kitDsd.c
+++ /dev/null
@@ -1,2621 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitDsd.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [Performs disjoint-support decomposition based on truth tables.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitDsd.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates the DSD manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_DsdMan_t * Kit_DsdManAlloc( int nVars, int nNodes )
-{
-    Kit_DsdMan_t * p;
-    p = ALLOC( Kit_DsdMan_t, 1 );
-    memset( p, 0, sizeof(Kit_DsdMan_t) );
-    p->nVars    = nVars;
-    p->nWords   = Kit_TruthWordNum( p->nVars );
-    p->vTtElems = Vec_PtrAllocTruthTables( p->nVars );
-    p->vTtNodes = Vec_PtrAllocSimInfo( nNodes, p->nWords );
-    p->dd       = Cloud_Init( 16, 14 );
-    p->vTtBdds  = Vec_PtrAllocSimInfo( (1<<12), p->nWords );
-    p->vNodes   = Vec_IntAlloc( 512 );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deallocates the DSD manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdManFree( Kit_DsdMan_t * p )
-{
-    Cloud_Quit( p->dd );
-    Vec_IntFree( p->vNodes );
-    Vec_PtrFree( p->vTtBdds );
-    Vec_PtrFree( p->vTtElems );
-    Vec_PtrFree( p->vTtNodes );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates the DSD node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_DsdObj_t * Kit_DsdObjAlloc( Kit_DsdNtk_t * pNtk, Kit_Dsd_t Type, int nFans )
-{
-    Kit_DsdObj_t * pObj;
-    int nSize = sizeof(Kit_DsdObj_t) + sizeof(unsigned) * (Kit_DsdObjOffset(nFans) + (Type == KIT_DSD_PRIME) * Kit_TruthWordNum(nFans));
-    pObj = (Kit_DsdObj_t *)ALLOC( char, nSize );
-    memset( pObj, 0, nSize );
-    pObj->Id = pNtk->nVars + pNtk->nNodes;
-    pObj->Type = Type;
-    pObj->nFans = nFans;
-    pObj->Offset = Kit_DsdObjOffset( nFans );
-    // add the object
-    if ( pNtk->nNodes == pNtk->nNodesAlloc )
-    {
-        pNtk->nNodesAlloc *= 2;
-        pNtk->pNodes = REALLOC( Kit_DsdObj_t *, pNtk->pNodes, pNtk->nNodesAlloc ); 
-    }
-    assert( pNtk->nNodes < pNtk->nNodesAlloc );
-    pNtk->pNodes[pNtk->nNodes++] = pObj;
-    return pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deallocates the DSD node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdObjFree( Kit_DsdNtk_t * p, Kit_DsdObj_t * pObj )
-{
-    free( pObj );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates the DSD network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_DsdNtk_t * Kit_DsdNtkAlloc( int nVars )
-{
-    Kit_DsdNtk_t * pNtk;
-    pNtk = ALLOC( Kit_DsdNtk_t, 1 );
-    memset( pNtk, 0, sizeof(Kit_DsdNtk_t) );
-    pNtk->pNodes = ALLOC( Kit_DsdObj_t *, nVars );
-    pNtk->nVars = nVars;
-    pNtk->nNodesAlloc = nVars;
-    pNtk->pMem = ALLOC( unsigned, 6 * Kit_TruthWordNum(nVars) );
-    return pNtk;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Deallocate the DSD network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdNtkFree( Kit_DsdNtk_t * pNtk )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned i;
-    Kit_DsdNtkForEachObj( pNtk, pObj, i )
-        free( pObj );
-    FREE( pNtk->pSupps );
-    free( pNtk->pNodes );
-    free( pNtk->pMem );
-    free( pNtk );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints the hex unsigned into a file.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdPrintHex( FILE * pFile, unsigned * pTruth, int nFans )
-{
-    int nDigits, Digit, k;
-    nDigits = (1 << nFans) / 4;
-    for ( k = nDigits - 1; k >= 0; k-- )
-    {
-        Digit = ((pTruth[k/8] >> ((k%8) * 4)) & 15);
-        if ( Digit < 10 )
-            fprintf( pFile, "%d", Digit );
-        else
-            fprintf( pFile, "%c", 'A' + Digit-10 );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recursively print the DSD formula.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdPrint_rec( FILE * pFile, Kit_DsdNtk_t * pNtk, int Id )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned iLit, i;
-    char Symbol;
-
-    pObj = Kit_DsdNtkObj( pNtk, Id );
-    if ( pObj == NULL )
-    {
-        assert( Id < pNtk->nVars );
-        fprintf( pFile, "%c", 'a' + Id );
-        return;
-    }
-
-    if ( pObj->Type == KIT_DSD_CONST1 )
-    {
-        assert( pObj->nFans == 0 );
-        fprintf( pFile, "Const1" );
-        return;
-    }
-
-    if ( pObj->Type == KIT_DSD_VAR )
-        assert( pObj->nFans == 1 );
-
-    if ( pObj->Type == KIT_DSD_AND )
-        Symbol = '*';
-    else if ( pObj->Type == KIT_DSD_XOR )
-        Symbol = '+';
-    else 
-        Symbol = ',';
-
-    if ( pObj->Type == KIT_DSD_PRIME )
-        Kit_DsdPrintHex( stdout, Kit_DsdObjTruth(pObj), pObj->nFans );
-
-    fprintf( pFile, "(" );
-    Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-    {
-        if ( Kit_DsdLitIsCompl(iLit) ) 
-            fprintf( pFile, "!" );
-        Kit_DsdPrint_rec( pFile, pNtk, Kit_DsdLit2Var(iLit) );
-        if ( i < pObj->nFans - 1 )
-            fprintf( pFile, "%c", Symbol );
-    }
-    fprintf( pFile, ")" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Print the DSD formula.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdPrint( FILE * pFile, Kit_DsdNtk_t * pNtk )
-{
-    fprintf( pFile, "F = " );
-    if ( Kit_DsdLitIsCompl(pNtk->Root) )
-        fprintf( pFile, "!" );
-    Kit_DsdPrint_rec( pFile, pNtk, Kit_DsdLit2Var(pNtk->Root) );
-    fprintf( pFile, "\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Print the DSD formula.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdPrintExpanded( Kit_DsdNtk_t * pNtk )
-{
-    Kit_DsdNtk_t * pTemp;
-    pTemp = Kit_DsdExpand( pNtk );
-    Kit_DsdPrint( stdout, pTemp );
-    Kit_DsdNtkFree( pTemp );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Print the DSD formula.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdPrintFromTruth( unsigned * pTruth, int nVars )
-{
-    Kit_DsdNtk_t * pTemp;
-    pTemp = Kit_DsdDecomposeMux( pTruth, nVars, 5 );
-    Kit_DsdVerify( pTemp, pTruth, nVars ); 
-    Kit_DsdPrintExpanded( pTemp );
-    Kit_DsdNtkFree( pTemp );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table of the DSD node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Kit_DsdTruthComputeNode_rec( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk, int Id )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned * pTruthRes, * pTruthFans[16], * pTruthTemp;
-    unsigned i, iLit, fCompl;
-//    unsigned m, nMints, * pTruthPrime, * pTruthMint; 
-
-    // get the node with this ID
-    pObj = Kit_DsdNtkObj( pNtk, Id );
-    pTruthRes = Vec_PtrEntry( p->vTtNodes, Id );
-
-    // special case: literal of an internal node
-    if ( pObj == NULL )
-    {
-        assert( Id < pNtk->nVars );
-        return pTruthRes;
-    }
-
-    // constant node
-    if ( pObj->Type == KIT_DSD_CONST1 )
-    {
-        assert( pObj->nFans == 0 );
-        Kit_TruthFill( pTruthRes, pNtk->nVars );
-        return pTruthRes;
-    }
-
-    // elementary variable node
-    if ( pObj->Type == KIT_DSD_VAR )
-    {
-        assert( pObj->nFans == 1 );
-        iLit = pObj->pFans[0];
-        pTruthFans[0] = Kit_DsdTruthComputeNode_rec( p, pNtk, Kit_DsdLit2Var(iLit) );
-        if ( Kit_DsdLitIsCompl(iLit) )
-            Kit_TruthNot( pTruthRes, pTruthFans[0], pNtk->nVars );
-        else
-            Kit_TruthCopy( pTruthRes, pTruthFans[0], pNtk->nVars );
-        return pTruthRes;
-    }
-
-    // collect the truth tables of the fanins
-    Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-        pTruthFans[i] = Kit_DsdTruthComputeNode_rec( p, pNtk, Kit_DsdLit2Var(iLit) );
-    // create the truth table
-
-    // simple gates
-    if ( pObj->Type == KIT_DSD_AND )
-    {
-        Kit_TruthFill( pTruthRes, pNtk->nVars );
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            Kit_TruthAndPhase( pTruthRes, pTruthRes, pTruthFans[i], pNtk->nVars, 0, Kit_DsdLitIsCompl(iLit) );
-        return pTruthRes;
-    }
-    if ( pObj->Type == KIT_DSD_XOR )
-    {
-        Kit_TruthClear( pTruthRes, pNtk->nVars );
-        fCompl = 0;
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-        {
-            Kit_TruthXor( pTruthRes, pTruthRes, pTruthFans[i], pNtk->nVars );
-            fCompl ^= Kit_DsdLitIsCompl(iLit);
-        }
-        if ( fCompl )
-            Kit_TruthNot( pTruthRes, pTruthRes, pNtk->nVars );
-        return pTruthRes;
-    }
-    assert( pObj->Type == KIT_DSD_PRIME );
-/*
-    // get the truth table of the prime node
-    pTruthPrime = Kit_DsdObjTruth( pObj );
-    // get storage for the temporary minterm
-    pTruthMint = Vec_PtrEntry(p->vTtNodes, pNtk->nVars + pNtk->nNodes);
-
-    // go through the minterms
-    nMints = (1 << pObj->nFans);
-    Kit_TruthClear( pTruthRes, pNtk->nVars );
-    for ( m = 0; m < nMints; m++ )
-    {
-        if ( !Kit_TruthHasBit(pTruthPrime, m) )
-            continue;
-        Kit_TruthFill( pTruthMint, pNtk->nVars );
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            Kit_TruthAndPhase( pTruthMint, pTruthMint, pTruthFans[i], pNtk->nVars, 0, ((m & (1<<i)) == 0) ^ Kit_DsdLitIsCompl(iLit) );
-        Kit_TruthOr( pTruthRes, pTruthRes, pTruthMint, pNtk->nVars );
-    }
-*/
-    pTruthTemp = Kit_TruthCompose( p->dd, Kit_DsdObjTruth(pObj), pObj->nFans, pTruthFans, pNtk->nVars, p->vTtBdds, p->vNodes );
-    Kit_TruthCopy( pTruthRes, pTruthTemp, pNtk->nVars );
-    return pTruthRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table of the DSD network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Kit_DsdTruthCompute( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk )
-{
-    unsigned * pTruthRes;
-    int i;
-    // assign elementary truth ables
-    assert( pNtk->nVars <= p->nVars );
-    for ( i = 0; i < (int)pNtk->nVars; i++ )
-        Kit_TruthCopy( Vec_PtrEntry(p->vTtNodes, i), Vec_PtrEntry(p->vTtElems, i), p->nVars );
-    // compute truth table for each node
-    pTruthRes = Kit_DsdTruthComputeNode_rec( p, pNtk, Kit_DsdLit2Var(pNtk->Root) );
-    // complement the truth table if needed
-    if ( Kit_DsdLitIsCompl(pNtk->Root) )
-        Kit_TruthNot( pTruthRes, pTruthRes, pNtk->nVars );
-    return pTruthRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table of the DSD node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Kit_DsdTruthComputeNodeOne_rec( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk, int Id, unsigned uSupp )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned * pTruthRes, * pTruthFans[16], * pTruthTemp;
-    unsigned i, iLit, fCompl, nPartial = 0;
-//    unsigned m, nMints, * pTruthPrime, * pTruthMint; 
-
-    // get the node with this ID
-    pObj = Kit_DsdNtkObj( pNtk, Id );
-    pTruthRes = Vec_PtrEntry( p->vTtNodes, Id );
-
-    // special case: literal of an internal node
-    if ( pObj == NULL )
-    {
-        assert( Id < pNtk->nVars );
-        assert( !uSupp || uSupp != (uSupp & ~(1<<Id)) );
-        return pTruthRes;
-    }
-
-    // constant node
-    if ( pObj->Type == KIT_DSD_CONST1 )
-    {
-        assert( pObj->nFans == 0 );
-        Kit_TruthFill( pTruthRes, pNtk->nVars );
-        return pTruthRes;
-    }
-
-    // elementary variable node
-    if ( pObj->Type == KIT_DSD_VAR )
-    {
-        assert( pObj->nFans == 1 );
-        iLit = pObj->pFans[0];
-        assert( Kit_DsdLitIsLeaf( pNtk, iLit ) );
-        pTruthFans[0] = Kit_DsdTruthComputeNodeOne_rec( p, pNtk, Kit_DsdLit2Var(iLit), uSupp );
-        if ( Kit_DsdLitIsCompl(iLit) )
-            Kit_TruthNot( pTruthRes, pTruthFans[0], pNtk->nVars );
-        else
-            Kit_TruthCopy( pTruthRes, pTruthFans[0], pNtk->nVars );
-        return pTruthRes;
-    }
-
-    // collect the truth tables of the fanins
-    if ( uSupp )
-    {
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            if ( uSupp != (uSupp & ~Kit_DsdLitSupport(pNtk, iLit)) )
-                pTruthFans[i] = Kit_DsdTruthComputeNodeOne_rec( p, pNtk, Kit_DsdLit2Var(iLit), uSupp );
-            else
-            {
-                pTruthFans[i] = NULL;
-                nPartial = 1;
-            }
-    }
-    else
-    {
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            pTruthFans[i] = Kit_DsdTruthComputeNodeOne_rec( p, pNtk, Kit_DsdLit2Var(iLit), uSupp );
-    }
-    // create the truth table
-
-    // simple gates
-    if ( pObj->Type == KIT_DSD_AND )
-    {
-        Kit_TruthFill( pTruthRes, pNtk->nVars );
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            if ( pTruthFans[i] )
-                Kit_TruthAndPhase( pTruthRes, pTruthRes, pTruthFans[i], pNtk->nVars, 0, Kit_DsdLitIsCompl(iLit) );
-        return pTruthRes;
-    }
-    if ( pObj->Type == KIT_DSD_XOR )
-    {
-        Kit_TruthClear( pTruthRes, pNtk->nVars );
-        fCompl = 0;
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-        {
-            if ( pTruthFans[i] )
-            {
-                Kit_TruthXor( pTruthRes, pTruthRes, pTruthFans[i], pNtk->nVars );
-                fCompl ^= Kit_DsdLitIsCompl(iLit);
-            }
-        }
-        if ( fCompl )
-            Kit_TruthNot( pTruthRes, pTruthRes, pNtk->nVars );
-        return pTruthRes;
-    }
-    assert( pObj->Type == KIT_DSD_PRIME );
-
-    if ( uSupp && nPartial )
-    {
-        // find the only non-empty component
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            if ( pTruthFans[i] )
-                break;
-        assert( i < pObj->nFans );
-        return pTruthFans[i];
-    }
-/*
-    // get the truth table of the prime node
-    pTruthPrime = Kit_DsdObjTruth( pObj );
-    // get storage for the temporary minterm
-    pTruthMint = Vec_PtrEntry(p->vTtNodes, pNtk->nVars + pNtk->nNodes);
-
-    // go through the minterms
-    nMints = (1 << pObj->nFans);
-    Kit_TruthClear( pTruthRes, pNtk->nVars );
-    for ( m = 0; m < nMints; m++ )
-    {
-        if ( !Kit_TruthHasBit(pTruthPrime, m) )
-            continue;
-        Kit_TruthFill( pTruthMint, pNtk->nVars );
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            Kit_TruthAndPhase( pTruthMint, pTruthMint, pTruthFans[i], pNtk->nVars, 0, ((m & (1<<i)) == 0) ^ Kit_DsdLitIsCompl(iLit) );
-        Kit_TruthOr( pTruthRes, pTruthRes, pTruthMint, pNtk->nVars );
-    }
-*/
-    pTruthTemp = Kit_TruthCompose( p->dd, Kit_DsdObjTruth(pObj), pObj->nFans, pTruthFans, pNtk->nVars, p->vTtBdds, p->vNodes );
-    Kit_TruthCopy( pTruthRes, pTruthTemp, pNtk->nVars );
-    return pTruthRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table of the DSD network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Kit_DsdTruthComputeOne( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk, unsigned uSupp )
-{
-    unsigned * pTruthRes;
-    int i;
-    // if support is specified, request that supports are available
-    if ( uSupp )
-        Kit_DsdGetSupports( pNtk );
-    // assign elementary truth tables
-    assert( pNtk->nVars <= p->nVars );
-    for ( i = 0; i < (int)pNtk->nVars; i++ )
-        Kit_TruthCopy( Vec_PtrEntry(p->vTtNodes, i), Vec_PtrEntry(p->vTtElems, i), p->nVars );
-    // compute truth table for each node
-    pTruthRes = Kit_DsdTruthComputeNodeOne_rec( p, pNtk, Kit_DsdLit2Var(pNtk->Root), uSupp );
-    // complement the truth table if needed
-    if ( Kit_DsdLitIsCompl(pNtk->Root) )
-        Kit_TruthNot( pTruthRes, pTruthRes, pNtk->nVars );
-    return pTruthRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table of the DSD node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Kit_DsdTruthComputeNodeTwo_rec( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk, int Id, unsigned uSupp, int iVar, unsigned * pTruthDec )
-{
-    Kit_DsdObj_t * pObj;
-    int pfBoundSet[16];
-    unsigned * pTruthRes, * pTruthFans[16], * pTruthTemp;
-    unsigned i, iLit, fCompl, nPartial, uSuppFan, uSuppCur;
-//    unsigned m, nMints, * pTruthPrime, * pTruthMint; 
-    assert( uSupp > 0 );
-
-    // get the node with this ID
-    pObj = Kit_DsdNtkObj( pNtk, Id );
-    pTruthRes = Vec_PtrEntry( p->vTtNodes, Id );
-    if ( pObj == NULL )
-    {
-        assert( Id < pNtk->nVars );
-        return pTruthRes;
-    }
-    assert( pObj->Type != KIT_DSD_CONST1 );
-    assert( pObj->Type != KIT_DSD_VAR );
-
-    // count the number of intersecting fanins 
-    // collect the total support of the intersecting fanins
-    nPartial = 0;
-    uSuppFan = 0;
-    Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-    {
-        uSuppCur = Kit_DsdLitSupport(pNtk, iLit);
-        if ( uSupp & uSuppCur )
-        {
-            nPartial++;
-            uSuppFan |= uSuppCur;
-        }
-    }
-
-    // if there is no intersection, or full intersection, use simple procedure
-    if ( nPartial == 0 || nPartial == pObj->nFans )
-        return Kit_DsdTruthComputeNodeOne_rec( p, pNtk, Id, 0 );
-
-    // if support of the component includes some other variables
-    // we need to continue constructing it as usual by the two-function procedure
-    if ( uSuppFan != (uSuppFan & uSupp) )
-    {
-        assert( nPartial == 1 );
-//        return Kit_DsdTruthComputeNodeTwo_rec( p, pNtk, Id, uSupp, iVar, pTruthDec );
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-        {
-            if ( uSupp & Kit_DsdLitSupport(pNtk, iLit) )
-                pTruthFans[i] = Kit_DsdTruthComputeNodeTwo_rec( p, pNtk, Kit_DsdLit2Var(iLit), uSupp, iVar, pTruthDec );
-            else
-                pTruthFans[i] = Kit_DsdTruthComputeNodeOne_rec( p, pNtk, Kit_DsdLit2Var(iLit), 0 );
-        }
-
-        // create composition/decomposition functions
-        if ( pObj->Type == KIT_DSD_AND )
-        {
-            Kit_TruthFill( pTruthRes, pNtk->nVars );
-            Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-                Kit_TruthAndPhase( pTruthRes, pTruthRes, pTruthFans[i], pNtk->nVars, 0, Kit_DsdLitIsCompl(iLit) );
-            return pTruthRes;
-        }
-        if ( pObj->Type == KIT_DSD_XOR )
-        {
-            Kit_TruthClear( pTruthRes, pNtk->nVars );
-            fCompl = 0;
-            Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            {
-                fCompl ^= Kit_DsdLitIsCompl(iLit);
-                Kit_TruthXor( pTruthRes, pTruthRes, pTruthFans[i], pNtk->nVars );
-            }
-            if ( fCompl )
-                Kit_TruthNot( pTruthRes, pTruthRes, pNtk->nVars );
-            return pTruthRes;
-        }
-        assert( pObj->Type == KIT_DSD_PRIME );
-    }
-    else
-    {
-        assert( uSuppFan == (uSuppFan & uSupp) );
-        assert( nPartial < pObj->nFans );
-        // the support of the insecting component(s) is contained in the bound-set
-        // and yet there are components that are not contained in the bound set
-
-        // solve the fanins and collect info, which components belong to the bound set
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-        {
-            pTruthFans[i] = Kit_DsdTruthComputeNodeOne_rec( p, pNtk, Kit_DsdLit2Var(iLit), 0 );
-            pfBoundSet[i] = (int)((uSupp & Kit_DsdLitSupport(pNtk, iLit)) > 0);
-        }
-
-        // create composition/decomposition functions
-        if ( pObj->Type == KIT_DSD_AND )
-        {
-            Kit_TruthIthVar( pTruthRes, pNtk->nVars, iVar );
-            Kit_TruthFill( pTruthDec, pNtk->nVars );
-            Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-                if ( pfBoundSet[i] )
-                    Kit_TruthAndPhase( pTruthDec, pTruthDec, pTruthFans[i], pNtk->nVars, 0, Kit_DsdLitIsCompl(iLit) );
-                else
-                    Kit_TruthAndPhase( pTruthRes, pTruthRes, pTruthFans[i], pNtk->nVars, 0, Kit_DsdLitIsCompl(iLit) );
-            return pTruthRes;
-        }
-        if ( pObj->Type == KIT_DSD_XOR )
-        {
-            Kit_TruthIthVar( pTruthRes, pNtk->nVars, iVar );
-            Kit_TruthClear( pTruthDec, pNtk->nVars );
-            fCompl = 0;
-            Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            {
-                fCompl ^= Kit_DsdLitIsCompl(iLit);
-                if ( pfBoundSet[i] )
-                    Kit_TruthXor( pTruthDec, pTruthDec, pTruthFans[i], pNtk->nVars );
-                else
-                    Kit_TruthXor( pTruthRes, pTruthRes, pTruthFans[i], pNtk->nVars );
-            }
-            if ( fCompl )
-                Kit_TruthNot( pTruthRes, pTruthRes, pNtk->nVars );
-            return pTruthRes;
-        }
-        assert( pObj->Type == KIT_DSD_PRIME );
-        assert( nPartial == 1 );
-
-        // find the only non-empty component
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            if ( pfBoundSet[i] )
-                break;
-        assert( i < pObj->nFans );
-
-        // save this component as the decomposed function
-        Kit_TruthCopy( pTruthDec, pTruthFans[i], pNtk->nVars );
-        // set the corresponding component to be the new variable
-        Kit_TruthIthVar( pTruthFans[i], pNtk->nVars, iVar );
-    }
-/*
-    // get the truth table of the prime node
-    pTruthPrime = Kit_DsdObjTruth( pObj );
-    // get storage for the temporary minterm
-    pTruthMint = Vec_PtrEntry(p->vTtNodes, pNtk->nVars + pNtk->nNodes);
-
-    // go through the minterms
-    nMints = (1 << pObj->nFans);
-    Kit_TruthClear( pTruthRes, pNtk->nVars );
-    for ( m = 0; m < nMints; m++ )
-    {
-        if ( !Kit_TruthHasBit(pTruthPrime, m) )
-            continue;
-        Kit_TruthFill( pTruthMint, pNtk->nVars );
-        Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-            Kit_TruthAndPhase( pTruthMint, pTruthMint, pTruthFans[i], pNtk->nVars, 0, ((m & (1<<i)) == 0) ^ Kit_DsdLitIsCompl(iLit) );
-        Kit_TruthOr( pTruthRes, pTruthRes, pTruthMint, pNtk->nVars );
-    }
-*/
-    Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-        assert( !Kit_DsdLitIsCompl(iLit) );
-    pTruthTemp = Kit_TruthCompose( p->dd, Kit_DsdObjTruth(pObj), pObj->nFans, pTruthFans, pNtk->nVars, p->vTtBdds, p->vNodes );
-    Kit_TruthCopy( pTruthRes, pTruthTemp, pNtk->nVars );
-    return pTruthRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table of the DSD network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Kit_DsdTruthComputeTwo( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk, unsigned uSupp, int iVar, unsigned * pTruthDec )
-{
-    unsigned * pTruthRes, uSuppAll;
-    int i;
-    assert( uSupp > 0 );
-    assert( pNtk->nVars <= p->nVars );
-    // compute support of all nodes
-    uSuppAll = Kit_DsdGetSupports( pNtk );
-    // consider special case - there is no overlap
-    if ( (uSupp & uSuppAll) == 0 )
-    {
-        Kit_TruthClear( pTruthDec, pNtk->nVars );
-        return Kit_DsdTruthCompute( p, pNtk );
-    }
-    // consider special case - support is fully contained
-    if ( (uSupp & uSuppAll) == uSuppAll )
-    {
-        pTruthRes = Kit_DsdTruthCompute( p, pNtk );
-        Kit_TruthCopy( pTruthDec, pTruthRes, pNtk->nVars );
-        Kit_TruthIthVar( pTruthRes, pNtk->nVars, iVar );
-        return pTruthRes;
-    }
-    // assign elementary truth tables
-    for ( i = 0; i < (int)pNtk->nVars; i++ )
-        Kit_TruthCopy( Vec_PtrEntry(p->vTtNodes, i), Vec_PtrEntry(p->vTtElems, i), p->nVars );
-    // compute truth table for each node
-    pTruthRes = Kit_DsdTruthComputeNodeTwo_rec( p, pNtk, Kit_DsdLit2Var(pNtk->Root), uSupp, iVar, pTruthDec );
-    // complement the truth table if needed
-    if ( Kit_DsdLitIsCompl(pNtk->Root) )
-        Kit_TruthNot( pTruthRes, pTruthRes, pNtk->nVars );
-    return pTruthRes;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table of the DSD network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdTruth( Kit_DsdNtk_t * pNtk, unsigned * pTruthRes )
-{
-    Kit_DsdMan_t * p;
-    unsigned * pTruth;
-    p = Kit_DsdManAlloc( pNtk->nVars, Kit_DsdNtkObjNum(pNtk) );
-    pTruth = Kit_DsdTruthCompute( p, pNtk );
-    Kit_TruthCopy( pTruthRes, pTruth, pNtk->nVars );
-    Kit_DsdManFree( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table of the DSD network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdTruthPartialTwo( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk, unsigned uSupp, int iVar, unsigned * pTruthCo, unsigned * pTruthDec )
-{
-    unsigned * pTruth = Kit_DsdTruthComputeTwo( p, pNtk, uSupp, iVar, pTruthDec );
-    if ( pTruthCo )
-        Kit_TruthCopy( pTruthCo, pTruth, pNtk->nVars );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table of the DSD network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdTruthPartial( Kit_DsdMan_t * p, Kit_DsdNtk_t * pNtk, unsigned * pTruthRes, unsigned uSupp )
-{
-    unsigned * pTruth = Kit_DsdTruthComputeOne( p, pNtk, uSupp );
-    Kit_TruthCopy( pTruthRes, pTruth, pNtk->nVars );
-/*
-    // verification
-    {
-        // compute the same function using different procedure
-        unsigned * pTruthTemp = Vec_PtrEntry(p->vTtNodes, pNtk->nVars + pNtk->nNodes + 1);
-        pNtk->pSupps = NULL;
-        Kit_DsdTruthComputeTwo( p, pNtk, uSupp, -1, pTruthTemp );
-//        if ( !Kit_TruthIsEqual( pTruthTemp, pTruthRes, pNtk->nVars ) )
-        if ( !Kit_TruthIsEqualWithPhase( pTruthTemp, pTruthRes, pNtk->nVars ) )
-        {
-            printf( "Verification FAILED!\n" );
-            Kit_DsdPrint( stdout, pNtk );
-            Kit_DsdPrintFromTruth( pTruthRes, pNtk->nVars );
-            Kit_DsdPrintFromTruth( pTruthTemp, pNtk->nVars );
-        }
-//        else
-//            printf( "Verification successful.\n" );
-    }
-*/
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of blocks of the given number of inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdCountLuts_rec( Kit_DsdNtk_t * pNtk, int nLutSize, int Id, int * pCounter )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned iLit, i, Res0, Res1;
-    pObj = Kit_DsdNtkObj( pNtk, Id );
-    if ( pObj == NULL )
-        return 0;
-    if ( pObj->Type == KIT_DSD_AND || pObj->Type == KIT_DSD_XOR )
-    {
-        assert( pObj->nFans == 2 );
-        Res0 = Kit_DsdCountLuts_rec( pNtk, nLutSize, Kit_DsdLit2Var(pObj->pFans[0]), pCounter );
-        Res1 = Kit_DsdCountLuts_rec( pNtk, nLutSize, Kit_DsdLit2Var(pObj->pFans[1]), pCounter );
-        if ( Res0 == 0 && Res1 > 0 )
-            return Res1 - 1;
-        if ( Res0 > 0 && Res1 == 0 )
-            return Res0 - 1;
-        (*pCounter)++;
-        return nLutSize - 2;
-    }
-    assert( pObj->Type == KIT_DSD_PRIME );
-    if ( (int)pObj->nFans > nLutSize ) //+ 1 )
-    {
-        *pCounter = 1000;
-        return 0;
-    }
-    Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-        Kit_DsdCountLuts_rec( pNtk, nLutSize, Kit_DsdLit2Var(iLit), pCounter );
-    (*pCounter)++;
-//    if ( (int)pObj->nFans == nLutSize + 1 )
-//        (*pCounter)++;
-    return nLutSize - pObj->nFans;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of blocks of the given number of inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdCountLuts( Kit_DsdNtk_t * pNtk, int nLutSize )
-{
-    int Counter = 0;
-    if ( Kit_DsdNtkRoot(pNtk)->Type == KIT_DSD_CONST1 )
-        return 0;
-    if ( Kit_DsdNtkRoot(pNtk)->Type == KIT_DSD_VAR )
-        return 0;
-    Kit_DsdCountLuts_rec( pNtk, nLutSize, Kit_DsdLit2Var(pNtk->Root), &Counter );
-    if ( Counter >= 1000 )
-        return -1;
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of blocks of the given number of inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdNonDsdSizeMax( Kit_DsdNtk_t * pNtk )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned i, nSizeMax = 0;
-    Kit_DsdNtkForEachObj( pNtk, pObj, i )
-    {
-        if ( pObj->Type != KIT_DSD_PRIME )
-            continue;
-        if ( nSizeMax < pObj->nFans )
-            nSizeMax = pObj->nFans;
-    }
-    return nSizeMax;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Finds the union of supports of the non-DSD blocks.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Kit_DsdNonDsdSupports( Kit_DsdNtk_t * pNtk )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned i, uSupport = 0;
-//    FREE( pNtk->pSupps );
-    Kit_DsdGetSupports( pNtk );
-    Kit_DsdNtkForEachObj( pNtk, pObj, i )
-    {
-        if ( pObj->Type != KIT_DSD_PRIME )
-            continue;
-        uSupport |= Kit_DsdLitSupport( pNtk, Kit_DsdVar2Lit(pObj->Id,0) );
-    }
-    return uSupport;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Expands the node.]
-
-  Description [Returns the new literal.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdExpandCollectAnd_rec( Kit_DsdNtk_t * p, int iLit, int * piLitsNew, int * nLitsNew )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned i, iLitFanin;
-    // check the end of the supergate
-    pObj = Kit_DsdNtkObj( p, Kit_DsdLit2Var(iLit) );
-    if ( Kit_DsdLitIsCompl(iLit) || Kit_DsdLit2Var(iLit) < p->nVars || pObj->Type != KIT_DSD_AND )
-    {
-        piLitsNew[(*nLitsNew)++] = iLit;
-        return;
-    }
-    // iterate through the fanins
-    Kit_DsdObjForEachFanin( p, pObj, iLitFanin, i )
-        Kit_DsdExpandCollectAnd_rec( p, iLitFanin, piLitsNew, nLitsNew );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Expands the node.]
-
-  Description [Returns the new literal.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdExpandCollectXor_rec( Kit_DsdNtk_t * p, int iLit, int * piLitsNew, int * nLitsNew )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned i, iLitFanin;
-    // check the end of the supergate
-    pObj = Kit_DsdNtkObj( p, Kit_DsdLit2Var(iLit) );
-    if ( Kit_DsdLit2Var(iLit) < p->nVars || pObj->Type != KIT_DSD_XOR )
-    {
-        piLitsNew[(*nLitsNew)++] = iLit;
-        return;
-    }
-    // iterate through the fanins
-    pObj = Kit_DsdNtkObj( p, Kit_DsdLit2Var(iLit) );
-    Kit_DsdObjForEachFanin( p, pObj, iLitFanin, i )
-        Kit_DsdExpandCollectXor_rec( p, iLitFanin, piLitsNew, nLitsNew );
-    // if the literal was complemented, pass the complemented attribute somewhere
-    if ( Kit_DsdLitIsCompl(iLit) )
-        piLitsNew[0] = Kit_DsdLitNot( piLitsNew[0] );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Expands the node.]
-
-  Description [Returns the new literal.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdExpandNode_rec( Kit_DsdNtk_t * pNew, Kit_DsdNtk_t * p, int iLit )
-{
-    unsigned * pTruth, * pTruthNew;
-    unsigned i, iLitFanin, piLitsNew[16], nLitsNew = 0;
-    Kit_DsdObj_t * pObj, * pObjNew;
-
-    // consider the case of simple gate
-    pObj = Kit_DsdNtkObj( p, Kit_DsdLit2Var(iLit) );
-    if ( pObj == NULL )
-        return iLit;
-    if ( pObj->Type == KIT_DSD_AND )
-    {
-        Kit_DsdExpandCollectAnd_rec( p, Kit_DsdLitRegular(iLit), piLitsNew, &nLitsNew );
-        pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_AND, nLitsNew );
-        for ( i = 0; i < pObjNew->nFans; i++ )
-            pObjNew->pFans[i] = Kit_DsdExpandNode_rec( pNew, p, piLitsNew[i] );
-        return Kit_DsdVar2Lit( pObjNew->Id, Kit_DsdLitIsCompl(iLit) );
-    }
-    if ( pObj->Type == KIT_DSD_XOR )
-    {
-        int fCompl = Kit_DsdLitIsCompl(iLit);
-        Kit_DsdExpandCollectXor_rec( p, Kit_DsdLitRegular(iLit), piLitsNew, &nLitsNew );
-        pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_XOR, nLitsNew );
-        for ( i = 0; i < pObjNew->nFans; i++ )
-        {
-            pObjNew->pFans[i] = Kit_DsdExpandNode_rec( pNew, p, Kit_DsdLitRegular(piLitsNew[i]) );
-            fCompl ^= Kit_DsdLitIsCompl(piLitsNew[i]);
-        }
-        return Kit_DsdVar2Lit( pObjNew->Id, fCompl );
-    }
-    assert( pObj->Type == KIT_DSD_PRIME );
-
-    // create new PRIME node
-    pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_PRIME, pObj->nFans );
-    // copy the truth table
-    pTruth = Kit_DsdObjTruth( pObj );
-    pTruthNew = Kit_DsdObjTruth( pObjNew );
-    Kit_TruthCopy( pTruthNew, pTruth, pObj->nFans );
-    // create fanins
-    Kit_DsdObjForEachFanin( pNtk, pObj, iLitFanin, i )
-    {
-        pObjNew->pFans[i] = Kit_DsdExpandNode_rec( pNew, p, iLitFanin );
-        // complement the corresponding inputs of the truth table
-        if ( Kit_DsdLitIsCompl(pObjNew->pFans[i]) )
-        {
-            pObjNew->pFans[i] = Kit_DsdLitRegular(pObjNew->pFans[i]);
-            Kit_TruthChangePhase( pTruthNew, pObjNew->nFans, i );
-        }
-    }
-    // if the incoming phase is complemented, absorb it into the prime node
-    if ( Kit_DsdLitIsCompl(iLit) )
-        Kit_TruthNot( pTruthNew, pTruthNew, pObj->nFans );
-    return Kit_DsdVar2Lit( pObjNew->Id, 0 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Expands the network.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_DsdNtk_t * Kit_DsdExpand( Kit_DsdNtk_t * p )
-{
-    Kit_DsdNtk_t * pNew;
-    Kit_DsdObj_t * pObjNew;
-    assert( p->nVars <= 16 );
-    // create a new network
-    pNew = Kit_DsdNtkAlloc( p->nVars );
-    // consider simple special cases
-    if ( Kit_DsdNtkRoot(p)->Type == KIT_DSD_CONST1 )
-    {
-        pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_CONST1, 0 );
-        pNew->Root = Kit_DsdVar2Lit( pObjNew->Id, Kit_DsdLitIsCompl(p->Root) );
-        return pNew;
-    }
-    if ( Kit_DsdNtkRoot(p)->Type == KIT_DSD_VAR )
-    {
-        pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_VAR, 1 );
-        pObjNew->pFans[0] = Kit_DsdNtkRoot(p)->pFans[0];
-        pNew->Root = Kit_DsdVar2Lit( pObjNew->Id, Kit_DsdLitIsCompl(p->Root) );
-        return pNew;
-    }
-    // convert the root node
-    pNew->Root = Kit_DsdExpandNode_rec( pNew, p, p->Root );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Sorts the literals by their support.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdCompSort( int pPrios[], unsigned uSupps[], unsigned char * piLits, int nVars, int piLitsRes[] )
-{
-    int nSuppSizes[16], Priority[16], pOrder[16];
-    int i, k, iVarBest, SuppMax, PrioMax;
-    // compute support sizes and priorities of the components
-    for ( i = 0; i < nVars; i++ )
-    {
-        assert( uSupps[i] );
-        pOrder[i] = i;
-        Priority[i] = KIT_INFINITY;
-        for ( k = 0; k < 16; k++ )
-            if ( uSupps[i] & (1 << k) )
-                Priority[i] = KIT_MIN( Priority[i], pPrios[k] );
-        assert( Priority[i] != 16 );
-        nSuppSizes[i] = Kit_WordCountOnes(uSupps[i]);
-    }
-    // sort the components by pririty
-    Extra_BubbleSort( pOrder, Priority, nVars, 0 );
-    // find the component by with largest size and lowest priority
-    iVarBest = -1;
-    SuppMax  = 0;
-    PrioMax  = 0;
-    for ( i = 0; i < nVars; i++ )
-    {
-        if ( SuppMax < nSuppSizes[i] || (SuppMax == nSuppSizes[i] && PrioMax < Priority[i]) )
-        {
-            SuppMax  = nSuppSizes[i];
-            PrioMax  = Priority[i];
-            iVarBest = i;
-        }
-    }
-    assert( iVarBest != -1 );
-    // copy the resulting literals
-    k = 0;
-    piLitsRes[k++] = piLits[iVarBest];
-    for ( i = 0; i < nVars; i++ )
-    {
-        if ( pOrder[i] == iVarBest )
-            continue;
-        piLitsRes[k++] = piLits[pOrder[i]];
-    }
-    assert( k == nVars );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Shrinks multi-input nodes.]
-
-  Description [Takes the array of variable priorities pPrios.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdShrink_rec( Kit_DsdNtk_t * pNew, Kit_DsdNtk_t * p, int iLit, int pPrios[] )
-{
-    Kit_DsdObj_t * pObj, * pObjNew;
-    unsigned * pTruth, * pTruthNew;
-    unsigned i, piLitsNew[16], uSupps[16];
-    int iLitFanin, iLitNew;
-
-    // consider the case of simple gate
-    pObj = Kit_DsdNtkObj( p, Kit_DsdLit2Var(iLit) );
-    if ( pObj == NULL )
-        return iLit;
-    if ( pObj->Type == KIT_DSD_AND )
-    {
-        // get the supports
-        Kit_DsdObjForEachFanin( p, pObj, iLitFanin, i )
-            uSupps[i] = Kit_DsdLitSupport( p, iLitFanin );
-        // put the largest component last
-        // sort other components in the decreasing order of priority of their vars
-        Kit_DsdCompSort( pPrios, uSupps, pObj->pFans, pObj->nFans, piLitsNew );
-        // construct the two-input node network
-        iLitNew = Kit_DsdShrink_rec( pNew, p, piLitsNew[0], pPrios );
-        for ( i = 1; i < pObj->nFans; i++ )
-        {
-            pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_AND, 2 );
-            pObjNew->pFans[0] = Kit_DsdShrink_rec( pNew, p, piLitsNew[i], pPrios );
-            pObjNew->pFans[1] = iLitNew;
-            iLitNew = Kit_DsdVar2Lit( pObjNew->Id, 0 );
-        }
-        return Kit_DsdVar2Lit( pObjNew->Id, Kit_DsdLitIsCompl(iLit) );
-    }
-    if ( pObj->Type == KIT_DSD_XOR )
-    {
-        // get the supports
-        Kit_DsdObjForEachFanin( p, pObj, iLitFanin, i )
-        {
-            assert( !Kit_DsdLitIsCompl(iLitFanin) );
-            uSupps[i] = Kit_DsdLitSupport( p, iLitFanin );
-        }
-        // put the largest component last
-        // sort other components in the decreasing order of priority of their vars
-        Kit_DsdCompSort( pPrios, uSupps, pObj->pFans, pObj->nFans, piLitsNew );
-        // construct the two-input node network
-        iLitNew = Kit_DsdShrink_rec( pNew, p, piLitsNew[0], pPrios );
-        for ( i = 1; i < pObj->nFans; i++ )
-        {
-            pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_XOR, 2 );
-            pObjNew->pFans[0] = Kit_DsdShrink_rec( pNew, p, piLitsNew[i], pPrios );
-            pObjNew->pFans[1] = iLitNew;
-            iLitNew = Kit_DsdVar2Lit( pObjNew->Id, 0 );
-        }
-        return Kit_DsdVar2Lit( pObjNew->Id, Kit_DsdLitIsCompl(iLit) );
-    }
-    assert( pObj->Type == KIT_DSD_PRIME );
-
-    // create new PRIME node
-    pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_PRIME, pObj->nFans );
-    // copy the truth table
-    pTruth = Kit_DsdObjTruth( pObj );
-    pTruthNew = Kit_DsdObjTruth( pObjNew );
-    Kit_TruthCopy( pTruthNew, pTruth, pObj->nFans );
-    // create fanins
-    Kit_DsdObjForEachFanin( pNtk, pObj, iLitFanin, i )
-    {
-        pObjNew->pFans[i] = Kit_DsdShrink_rec( pNew, p, iLitFanin, pPrios );
-        // complement the corresponding inputs of the truth table
-        if ( Kit_DsdLitIsCompl(pObjNew->pFans[i]) )
-        {
-            pObjNew->pFans[i] = Kit_DsdLitRegular(pObjNew->pFans[i]);
-            Kit_TruthChangePhase( pTruthNew, pObjNew->nFans, i );
-        }
-    }
-    // if the incoming phase is complemented, absorb it into the prime node
-    if ( Kit_DsdLitIsCompl(iLit) )
-        Kit_TruthNot( pTruthNew, pTruthNew, pObj->nFans );
-    return Kit_DsdVar2Lit( pObjNew->Id, 0 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Shrinks the network.]
-
-  Description [Transforms the network to have two-input nodes so that the
-  higher-ordered nodes were decomposed out first.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_DsdNtk_t * Kit_DsdShrink( Kit_DsdNtk_t * p, int pPrios[] )
-{
-    Kit_DsdNtk_t * pNew;
-    Kit_DsdObj_t * pObjNew;
-    assert( p->nVars <= 16 );
-    // create a new network
-    pNew = Kit_DsdNtkAlloc( p->nVars );
-    // consider simple special cases
-    if ( Kit_DsdNtkRoot(p)->Type == KIT_DSD_CONST1 )
-    {
-        pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_CONST1, 0 );
-        pNew->Root = Kit_DsdVar2Lit( pObjNew->Id, Kit_DsdLitIsCompl(p->Root) );
-        return pNew;
-    }
-    if ( Kit_DsdNtkRoot(p)->Type == KIT_DSD_VAR )
-    {
-        pObjNew = Kit_DsdObjAlloc( pNew, KIT_DSD_VAR, 1 );
-        pObjNew->pFans[0] = Kit_DsdNtkRoot(p)->pFans[0];
-        pNew->Root = Kit_DsdVar2Lit( pObjNew->Id, Kit_DsdLitIsCompl(p->Root) );
-        return pNew;
-    }
-    // convert the root node
-    pNew->Root = Kit_DsdShrink_rec( pNew, p, p->Root, pPrios );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Rotates the network.]
-
-  Description [Transforms prime nodes to have the fanin with the
-  highest frequency of supports go first.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdRotate( Kit_DsdNtk_t * p, int pFreqs[] )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned * pIn, * pOut, * pTemp, k;
-    int i, v, Temp, uSuppFanin, iFaninLit, WeightMax, FaninMax, nSwaps;
-    int Weights[16];
-    // go through the prime nodes
-    Kit_DsdNtkForEachObj( p, pObj, i )
-    {
-        if ( pObj->Type != KIT_DSD_PRIME )
-            continue;
-        // count the fanin frequencies
-        Kit_DsdObjForEachFanin( p, pObj, iFaninLit, k )
-        {
-            uSuppFanin = Kit_DsdLitSupport( p, iFaninLit );
-            Weights[k] = 0;
-            for ( v = 0; v < 16; v++ )
-                if ( uSuppFanin & (1 << v) )
-                    Weights[k] += pFreqs[v] - 1;
-        }
-        // find the most frequent fanin
-        WeightMax = 0; 
-        FaninMax = -1;
-        for ( k = 0; k < pObj->nFans; k++ )
-            if ( WeightMax < Weights[k] )
-            {
-                WeightMax = Weights[k];
-                FaninMax = k;
-            }
-        // no need to reorder if there are no frequent fanins
-        if ( FaninMax == -1 )
-            continue;
-        // move the fanins number k to the first place
-        nSwaps = 0;
-        pIn = Kit_DsdObjTruth(pObj);
-        pOut = p->pMem;
-//        for ( v = FaninMax; v < ((int)pObj->nFans)-1; v++ )
-        for ( v = FaninMax-1; v >= 0; v-- )
-        {
-            // swap the fanins
-            Temp = pObj->pFans[v];
-            pObj->pFans[v] = pObj->pFans[v+1];
-            pObj->pFans[v+1] = Temp;
-            // swap the truth table variables
-            Kit_TruthSwapAdjacentVars( pOut, pIn, pObj->nFans, v );
-            pTemp = pIn; pIn = pOut; pOut = pTemp;
-            nSwaps++;
-        }
-        if ( nSwaps & 1 )
-            Kit_TruthCopy( pOut, pIn, pObj->nFans );
-    }    
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compute the support.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Kit_DsdGetSupports_rec( Kit_DsdNtk_t * p, int iLit )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned uSupport, k;
-    int iFaninLit;
-    pObj = Kit_DsdNtkObj( p, Kit_DsdLit2Var(iLit) );
-    if ( pObj == NULL )
-        return Kit_DsdLitSupport( p, iLit );
-    uSupport = 0;
-    Kit_DsdObjForEachFanin( p, pObj, iFaninLit, k )
-        uSupport |= Kit_DsdGetSupports_rec( p, iFaninLit );
-    p->pSupps[pObj->Id - p->nVars] = uSupport;
-    assert( uSupport <= 0xFFFF );
-    return uSupport;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Compute the support.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Kit_DsdGetSupports( Kit_DsdNtk_t * p )
-{
-    Kit_DsdObj_t * pRoot;
-    unsigned uSupport;
-    assert( p->pSupps == NULL );
-    p->pSupps = ALLOC( unsigned, p->nNodes );
-    // consider simple special cases
-    pRoot = Kit_DsdNtkRoot(p);
-    if ( pRoot->Type == KIT_DSD_CONST1 )
-    {
-        assert( p->nNodes == 1 );
-        uSupport = p->pSupps[0] = 0;
-    }
-    if ( pRoot->Type == KIT_DSD_VAR )
-    {
-        assert( p->nNodes == 1 );
-        uSupport = p->pSupps[0] = Kit_DsdLitSupport( p, pRoot->pFans[0] );
-    }
-    else
-        uSupport = Kit_DsdGetSupports_rec( p, p->Root );
-    assert( uSupport <= 0xFFFF );
-    return uSupport;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if there is a component with more than 3 inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdFindLargeBox_rec( Kit_DsdNtk_t * pNtk, int Id, int Size )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned iLit, i, RetValue;
-    pObj = Kit_DsdNtkObj( pNtk, Id );
-    if ( pObj == NULL )
-        return 0;
-    if ( pObj->Type == KIT_DSD_PRIME && (int)pObj->nFans > Size )
-        return 1;
-    RetValue = 0;
-    Kit_DsdObjForEachFanin( pNtk, pObj, iLit, i )
-        RetValue |= Kit_DsdFindLargeBox_rec( pNtk, Kit_DsdLit2Var(iLit), Size );
-    return RetValue;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if there is a component with more than 3 inputs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdFindLargeBox( Kit_DsdNtk_t * pNtk, int Size )
-{
-    return Kit_DsdFindLargeBox_rec( pNtk, Kit_DsdLit2Var(pNtk->Root), Size );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the non-DSD 4-var func is implementable with two 3-LUTs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdRootNodeHasCommonVars( Kit_DsdObj_t * pObj0, Kit_DsdObj_t * pObj1 )
-{
-    unsigned i, k;
-    for ( i = 0; i < pObj0->nFans; i++ )
-    {
-        if ( Kit_DsdLit2Var(pObj0->pFans[i]) >= 4 )
-            continue;
-        for ( k = 0; k < pObj1->nFans; k++ )
-            if ( Kit_DsdLit2Var(pObj0->pFans[i]) == Kit_DsdLit2Var(pObj1->pFans[k]) )
-                return 1;
-    }
-    return 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if the non-DSD 4-var func is implementable with two 3-LUTs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdCheckVar4Dec2( Kit_DsdNtk_t * pNtk0, Kit_DsdNtk_t * pNtk1 )
-{
-    assert( pNtk0->nVars == 4 );
-    assert( pNtk1->nVars == 4 );
-    if ( Kit_DsdFindLargeBox(pNtk0, 2) )
-        return 0;
-    if ( Kit_DsdFindLargeBox(pNtk1, 2) )
-        return 0;
-    return Kit_DsdRootNodeHasCommonVars( Kit_DsdNtkRoot(pNtk0), Kit_DsdNtkRoot(pNtk1) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdDecompose_rec( Kit_DsdNtk_t * pNtk, Kit_DsdObj_t * pObj, unsigned uSupp, unsigned char * pPar, int nDecMux )
-{
-    Kit_DsdObj_t * pRes, * pRes0, * pRes1;
-    int nWords = Kit_TruthWordNum(pObj->nFans);
-    unsigned * pTruth = Kit_DsdObjTruth(pObj);
-    unsigned * pCofs2[2] = { pNtk->pMem, pNtk->pMem + nWords };
-    unsigned * pCofs4[2][2] = { {pNtk->pMem + 2 * nWords, pNtk->pMem + 3 * nWords}, {pNtk->pMem + 4 * nWords, pNtk->pMem + 5 * nWords} };
-    int i, iLit0, iLit1, nFans0, nFans1, nPairs;
-    int fEquals[2][2], fOppos, fPairs[4][4];
-    unsigned j, k, nFansNew, uSupp0, uSupp1;
-
-    assert( pObj->nFans > 0 );
-    assert( pObj->Type == KIT_DSD_PRIME );
-    assert( uSupp == (uSupp0 = (unsigned)Kit_TruthSupport(pTruth, pObj->nFans)) );
-
-    // compress the truth table
-    if ( uSupp != Kit_BitMask(pObj->nFans) )
-    {
-        nFansNew = Kit_WordCountOnes(uSupp);
-        Kit_TruthShrink( pNtk->pMem, pTruth, nFansNew, pObj->nFans, uSupp, 1 );
-        for ( j = k = 0; j < pObj->nFans; j++ )
-            if ( uSupp & (1 << j) )
-                pObj->pFans[k++] = pObj->pFans[j];
-        assert( k == nFansNew );
-        pObj->nFans = k;
-        uSupp = Kit_BitMask(pObj->nFans);
-    }
-
-    // consider the single variable case
-    if ( pObj->nFans == 1 )
-    {
-        pObj->Type = KIT_DSD_NONE;
-        if ( pTruth[0] == 0x55555555 )
-            pObj->pFans[0] = Kit_DsdLitNot(pObj->pFans[0]);
-        else
-            assert( pTruth[0] == 0xAAAAAAAA );
-        // update the parent pointer
-        *pPar = Kit_DsdLitNotCond( pObj->pFans[0], Kit_DsdLitIsCompl(*pPar) );
-        return;
-    }
-
-    // decompose the output
-    if ( !pObj->fMark )
-    for ( i = pObj->nFans - 1; i >= 0; i-- )
-    {
-        // get the two-variable cofactors
-        Kit_TruthCofactor0New( pCofs2[0], pTruth, pObj->nFans, i );
-        Kit_TruthCofactor1New( pCofs2[1], pTruth, pObj->nFans, i );
-//        assert( !Kit_TruthVarInSupport( pCofs2[0], pObj->nFans, i) );
-//        assert( !Kit_TruthVarInSupport( pCofs2[1], pObj->nFans, i) );
-        // get the constant cofs
-        fEquals[0][0] = Kit_TruthIsConst0( pCofs2[0], pObj->nFans );
-        fEquals[0][1] = Kit_TruthIsConst0( pCofs2[1], pObj->nFans );
-        fEquals[1][0] = Kit_TruthIsConst1( pCofs2[0], pObj->nFans );
-        fEquals[1][1] = Kit_TruthIsConst1( pCofs2[1], pObj->nFans );
-        fOppos        = Kit_TruthIsOpposite( pCofs2[0], pCofs2[1], pObj->nFans );
-        assert( !Kit_TruthIsEqual(pCofs2[0], pCofs2[1], pObj->nFans) );
-        if ( fEquals[0][0] + fEquals[0][1] + fEquals[1][0] + fEquals[1][1] + fOppos == 0 )
-        {
-            // check the MUX decomposition
-            uSupp0 = Kit_TruthSupport( pCofs2[0], pObj->nFans );
-            uSupp1 = Kit_TruthSupport( pCofs2[1], pObj->nFans );
-            assert( uSupp == (uSupp0 | uSupp1 | (1<<i)) );
-            if ( uSupp0 & uSupp1 )
-                continue;
-            // perform MUX decomposition
-            pRes0 = Kit_DsdObjAlloc( pNtk, KIT_DSD_PRIME, pObj->nFans );
-            pRes1 = Kit_DsdObjAlloc( pNtk, KIT_DSD_PRIME, pObj->nFans );
-            for ( k = 0; k < pObj->nFans; k++ )
-            {
-                pRes0->pFans[k] = (uSupp0 & (1 << k))? pObj->pFans[k] : 127;
-                pRes1->pFans[k] = (uSupp1 & (1 << k))? pObj->pFans[k] : 127;
-            }
-            Kit_TruthCopy( Kit_DsdObjTruth(pRes0), pCofs2[0], pObj->nFans );        
-            Kit_TruthCopy( Kit_DsdObjTruth(pRes1), pCofs2[1], pObj->nFans ); 
-            // update the current one
-            assert( pObj->Type == KIT_DSD_PRIME );
-            pTruth[0] = 0xCACACACA;
-            pObj->nFans = 3;
-            pObj->pFans[2] = pObj->pFans[i];
-            pObj->pFans[0] = 2*pRes0->Id; pRes0->nRefs++;
-            pObj->pFans[1] = 2*pRes1->Id; pRes1->nRefs++;
-            // call recursively
-            Kit_DsdDecompose_rec( pNtk, pRes0, uSupp0, pObj->pFans + 0, nDecMux );
-            Kit_DsdDecompose_rec( pNtk, pRes1, uSupp1, pObj->pFans + 1, nDecMux );
-            return;
-        }
-
-        // create the new node
-        pRes = Kit_DsdObjAlloc( pNtk, KIT_DSD_AND, 2 );
-        pRes->nRefs++;
-        pRes->nFans = 2;
-        pRes->pFans[0] = pObj->pFans[i];  pObj->pFans[i] = 127;  uSupp &= ~(1 << i);
-        pRes->pFans[1] = 2*pObj->Id;
-        // update the parent pointer
-        *pPar = Kit_DsdLitNotCond( 2 * pRes->Id, Kit_DsdLitIsCompl(*pPar) );
-        // consider different decompositions
-        if ( fEquals[0][0] )
-        {
-            Kit_TruthCopy( pTruth, pCofs2[1], pObj->nFans );
-        }
-        else if ( fEquals[0][1] )
-        {
-            pRes->pFans[0] = Kit_DsdLitNot(pRes->pFans[0]);
-            Kit_TruthCopy( pTruth, pCofs2[0], pObj->nFans );
-        }
-        else if ( fEquals[1][0] )
-        {
-            *pPar = Kit_DsdLitNot(*pPar);
-            pRes->pFans[1] = Kit_DsdLitNot(pRes->pFans[1]);
-            Kit_TruthCopy( pTruth, pCofs2[1], pObj->nFans );
-        }
-        else if ( fEquals[1][1] )
-        {
-            *pPar = Kit_DsdLitNot(*pPar);
-            pRes->pFans[0] = Kit_DsdLitNot(pRes->pFans[0]);  
-            pRes->pFans[1] = Kit_DsdLitNot(pRes->pFans[1]);
-            Kit_TruthCopy( pTruth, pCofs2[0], pObj->nFans );
-        }
-        else if ( fOppos )
-        {
-            pRes->Type = KIT_DSD_XOR;
-            Kit_TruthCopy( pTruth, pCofs2[0], pObj->nFans );
-        }
-        else
-            assert( 0 );
-        // decompose the remainder
-        assert( Kit_DsdObjTruth(pObj) == pTruth );
-        Kit_DsdDecompose_rec( pNtk, pObj, uSupp, pRes->pFans + 1, nDecMux );
-        return;
-    }
-    pObj->fMark = 1;
-
-    // decompose the input
-    for ( i = pObj->nFans - 1; i >= 0; i-- )
-    {
-        assert( Kit_TruthVarInSupport( pTruth, pObj->nFans, i ) );
-        // get the single variale cofactors
-        Kit_TruthCofactor0New( pCofs2[0], pTruth, pObj->nFans, i );
-        Kit_TruthCofactor1New( pCofs2[1], pTruth, pObj->nFans, i );
-        // check the existence of MUX decomposition
-        uSupp0 = Kit_TruthSupport( pCofs2[0], pObj->nFans );
-        uSupp1 = Kit_TruthSupport( pCofs2[1], pObj->nFans );
-        assert( uSupp == (uSupp0 | uSupp1 | (1<<i)) );
-        // if one of the cofs is a constant, it is time to check the output again
-        if ( uSupp0 == 0 || uSupp1 == 0 )
-        {
-            pObj->fMark = 0;
-            Kit_DsdDecompose_rec( pNtk, pObj, uSupp, pPar, nDecMux );
-            return;
-        }
-        assert( uSupp0 && uSupp1 );
-        // get the number of unique variables
-        nFans0 = Kit_WordCountOnes( uSupp0 & ~uSupp1 );
-        nFans1 = Kit_WordCountOnes( uSupp1 & ~uSupp0 );
-        if ( nFans0 == 1 && nFans1 == 1 )
-        {
-            // get the cofactors w.r.t. the unique variables
-            iLit0 = Kit_WordFindFirstBit( uSupp0 & ~uSupp1 );
-            iLit1 = Kit_WordFindFirstBit( uSupp1 & ~uSupp0 );
-            // get four cofactors                                        
-            Kit_TruthCofactor0New( pCofs4[0][0], pCofs2[0], pObj->nFans, iLit0 );
-            Kit_TruthCofactor1New( pCofs4[0][1], pCofs2[0], pObj->nFans, iLit0 );
-            Kit_TruthCofactor0New( pCofs4[1][0], pCofs2[1], pObj->nFans, iLit1 );
-            Kit_TruthCofactor1New( pCofs4[1][1], pCofs2[1], pObj->nFans, iLit1 );
-            // check existence conditions
-            fEquals[0][0] = Kit_TruthIsEqual( pCofs4[0][0], pCofs4[1][0], pObj->nFans );
-            fEquals[0][1] = Kit_TruthIsEqual( pCofs4[0][1], pCofs4[1][1], pObj->nFans );
-            fEquals[1][0] = Kit_TruthIsEqual( pCofs4[0][0], pCofs4[1][1], pObj->nFans );
-            fEquals[1][1] = Kit_TruthIsEqual( pCofs4[0][1], pCofs4[1][0], pObj->nFans );
-            if ( (fEquals[0][0] && fEquals[0][1]) || (fEquals[1][0] && fEquals[1][1]) )
-            {
-                // construct the MUX
-                pRes = Kit_DsdObjAlloc( pNtk, KIT_DSD_PRIME, 3 );
-                Kit_DsdObjTruth(pRes)[0] = 0xCACACACA;
-                pRes->nRefs++;
-                pRes->nFans = 3;
-                pRes->pFans[0] = pObj->pFans[iLit0]; pObj->pFans[iLit0] = 127;  uSupp &= ~(1 << iLit0);
-                pRes->pFans[1] = pObj->pFans[iLit1]; pObj->pFans[iLit1] = 127;  uSupp &= ~(1 << iLit1);
-                pRes->pFans[2] = pObj->pFans[i];     pObj->pFans[i] = 2 * pRes->Id; // remains in support
-                // update the node
-//                if ( fEquals[0][0] && fEquals[0][1] )
-//                    Kit_TruthMuxVar( pTruth, pCofs4[0][0], pCofs4[0][1], pObj->nFans, i );
-//                else
-//                    Kit_TruthMuxVar( pTruth, pCofs4[0][1], pCofs4[0][0], pObj->nFans, i );
-                Kit_TruthMuxVar( pTruth, pCofs4[1][0], pCofs4[1][1], pObj->nFans, i );
-                if ( fEquals[1][0] && fEquals[1][1] )
-                    pRes->pFans[0] = Kit_DsdLitNot(pRes->pFans[0]);
-                // decompose the remainder
-                Kit_DsdDecompose_rec( pNtk, pObj, uSupp, pPar, nDecMux );
-                return;
-            }
-        }
-
-        // try other inputs
-        for ( k = i+1; k < pObj->nFans; k++ )
-        {
-            // get four cofactors                                                ik
-            Kit_TruthCofactor0New( pCofs4[0][0], pCofs2[0], pObj->nFans, k ); // 00 
-            Kit_TruthCofactor1New( pCofs4[0][1], pCofs2[0], pObj->nFans, k ); // 01 
-            Kit_TruthCofactor0New( pCofs4[1][0], pCofs2[1], pObj->nFans, k ); // 10 
-            Kit_TruthCofactor1New( pCofs4[1][1], pCofs2[1], pObj->nFans, k ); // 11 
-            // compare equal pairs
-            fPairs[0][1] = fPairs[1][0] = Kit_TruthIsEqual( pCofs4[0][0], pCofs4[0][1], pObj->nFans );
-            fPairs[0][2] = fPairs[2][0] = Kit_TruthIsEqual( pCofs4[0][0], pCofs4[1][0], pObj->nFans );
-            fPairs[0][3] = fPairs[3][0] = Kit_TruthIsEqual( pCofs4[0][0], pCofs4[1][1], pObj->nFans );
-            fPairs[1][2] = fPairs[2][1] = Kit_TruthIsEqual( pCofs4[0][1], pCofs4[1][0], pObj->nFans );
-            fPairs[1][3] = fPairs[3][1] = Kit_TruthIsEqual( pCofs4[0][1], pCofs4[1][1], pObj->nFans );
-            fPairs[2][3] = fPairs[3][2] = Kit_TruthIsEqual( pCofs4[1][0], pCofs4[1][1], pObj->nFans );
-            nPairs = fPairs[0][1] + fPairs[0][2] + fPairs[0][3] + fPairs[1][2] + fPairs[1][3] + fPairs[2][3];
-            if ( nPairs != 3 && nPairs != 2 )
-                continue;
-
-            // decomposition exists
-            pRes = Kit_DsdObjAlloc( pNtk, KIT_DSD_AND, 2 );
-            pRes->nRefs++;
-            pRes->nFans = 2;
-            pRes->pFans[0] = pObj->pFans[k]; pObj->pFans[k] = 2 * pRes->Id;  // remains in support
-            pRes->pFans[1] = pObj->pFans[i]; pObj->pFans[i] = 127;       uSupp &= ~(1 << i);
-            if ( !fPairs[0][1] && !fPairs[0][2] && !fPairs[0][3] ) // 00
-            {
-                pRes->pFans[0] = Kit_DsdLitNot(pRes->pFans[0]);  
-                pRes->pFans[1] = Kit_DsdLitNot(pRes->pFans[1]);
-                Kit_TruthMuxVar( pTruth, pCofs4[1][1], pCofs4[0][0], pObj->nFans, k );
-            }
-            else if ( !fPairs[1][0] && !fPairs[1][2] && !fPairs[1][3] ) // 01
-            {
-                pRes->pFans[1] = Kit_DsdLitNot(pRes->pFans[1]);  
-                Kit_TruthMuxVar( pTruth, pCofs4[0][0], pCofs4[0][1], pObj->nFans, k );
-            }
-            else if ( !fPairs[2][0] && !fPairs[2][1] && !fPairs[2][3] ) // 10
-            {
-                pRes->pFans[0] = Kit_DsdLitNot(pRes->pFans[0]);  
-                Kit_TruthMuxVar( pTruth, pCofs4[0][0], pCofs4[1][0], pObj->nFans, k );
-            }
-            else if ( !fPairs[3][0] && !fPairs[3][1] && !fPairs[3][2] ) // 11
-            {
-//                unsigned uSupp0 = Kit_TruthSupport(pCofs4[0][0], pObj->nFans);
-//                unsigned uSupp1 = Kit_TruthSupport(pCofs4[1][1], pObj->nFans);
-//                unsigned uSupp;
-//                Extra_PrintBinary( stdout, &uSupp0, pObj->nFans ); printf( "\n" );
-//                Extra_PrintBinary( stdout, &uSupp1, pObj->nFans ); printf( "\n" );
-                Kit_TruthMuxVar( pTruth, pCofs4[0][0], pCofs4[1][1], pObj->nFans, k );
-//                uSupp = Kit_TruthSupport(pTruth, pObj->nFans);
-//                Extra_PrintBinary( stdout, &uSupp, pObj->nFans ); printf( "\n" ); printf( "\n" );
-            }
-            else
-            {
-                assert( fPairs[0][3] && fPairs[1][2] );
-                pRes->Type = KIT_DSD_XOR;;
-                Kit_TruthMuxVar( pTruth, pCofs4[0][0], pCofs4[0][1], pObj->nFans, k );
-            }
-            // decompose the remainder
-            Kit_DsdDecompose_rec( pNtk, pObj, uSupp, pPar, nDecMux );
-            return;
-        }
-    }
-/*
-    // if all decomposition methods failed and we are still above the limit, perform MUX-decomposition
-    if ( nDecMux > 0 && (int)pObj->nFans > nDecMux )
-    {
-        int iBestVar = Kit_TruthBestCofVar( pTruth, pObj->nFans, pCofs2[0], pCofs2[1] );
-        uSupp0 = Kit_TruthSupport( pCofs2[0], pObj->nFans );
-        uSupp1 = Kit_TruthSupport( pCofs2[1], pObj->nFans );
-        // perform MUX decomposition
-        pRes0 = Kit_DsdObjAlloc( pNtk, KIT_DSD_PRIME, pObj->nFans );
-        pRes1 = Kit_DsdObjAlloc( pNtk, KIT_DSD_PRIME, pObj->nFans );
-        for ( k = 0; k < pObj->nFans; k++ )
-            pRes0->pFans[k] = pRes1->pFans[k] = pObj->pFans[k];
-        Kit_TruthCopy( Kit_DsdObjTruth(pRes0), pCofs2[0], pObj->nFans );        
-        Kit_TruthCopy( Kit_DsdObjTruth(pRes1), pCofs2[1], pObj->nFans ); 
-        // update the current one
-        assert( pObj->Type == KIT_DSD_PRIME );
-        pTruth[0] = 0xCACACACA;
-        pObj->nFans = 3;
-        pObj->pFans[0] = 2*pRes0->Id; pRes0->nRefs++;
-        pObj->pFans[1] = 2*pRes1->Id; pRes1->nRefs++;
-        pObj->pFans[2] = pObj->pFans[iBestVar];
-        // call recursively
-        Kit_DsdDecompose_rec( pNtk, pRes0, uSupp0, pObj->pFans + 0, nDecMux );
-        Kit_DsdDecompose_rec( pNtk, pRes1, uSupp1, pObj->pFans + 1, nDecMux );
-    }
-*/
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_DsdNtk_t * Kit_DsdDecomposeInt( unsigned * pTruth, int nVars, int nDecMux )
-{
-    Kit_DsdNtk_t * pNtk;
-    Kit_DsdObj_t * pObj;
-    unsigned uSupp;
-    int i, nVarsReal;
-    assert( nVars <= 16 );
-    pNtk = Kit_DsdNtkAlloc( nVars );
-    pNtk->Root = Kit_DsdVar2Lit( pNtk->nVars, 0 );
-    // create the first node
-    pObj = Kit_DsdObjAlloc( pNtk, KIT_DSD_PRIME, nVars );
-    assert( pNtk->pNodes[0] == pObj );
-    for ( i = 0; i < nVars; i++ )
-       pObj->pFans[i] = Kit_DsdVar2Lit( i, 0 );
-    Kit_TruthCopy( Kit_DsdObjTruth(pObj), pTruth, nVars );
-    uSupp = Kit_TruthSupport( pTruth, nVars );
-    // consider special cases
-    nVarsReal = Kit_WordCountOnes( uSupp );
-    if ( nVarsReal == 0 )
-    {
-        pObj->Type = KIT_DSD_CONST1;
-        pObj->nFans = 0;
-        if ( pTruth[0] == 0 )
-             pNtk->Root = Kit_DsdLitNot(pNtk->Root);
-        return pNtk;
-    }
-    if ( nVarsReal == 1 )
-    {
-        pObj->Type = KIT_DSD_VAR;
-        pObj->nFans = 1;
-        pObj->pFans[0] = Kit_DsdVar2Lit( Kit_WordFindFirstBit(uSupp), (pTruth[0] & 1) );
-        return pNtk;
-    }
-    Kit_DsdDecompose_rec( pNtk, pNtk->pNodes[0], uSupp, &pNtk->Root, nDecMux );
-    return pNtk;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_DsdNtk_t * Kit_DsdDecompose( unsigned * pTruth, int nVars )
-{
-    return Kit_DsdDecomposeInt( pTruth, nVars, 0 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_DsdNtk_t * Kit_DsdDecomposeExpand( unsigned * pTruth, int nVars )
-{
-    Kit_DsdNtk_t * pNtk, * pTemp;
-    pNtk = Kit_DsdDecomposeInt( pTruth, nVars, 0 );
-    pNtk = Kit_DsdExpand( pTemp = pNtk );      
-    Kit_DsdNtkFree( pTemp );
-    return pNtk;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the truth table.]
-
-  Description [Uses MUXes to break-down large prime nodes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_DsdNtk_t *  Kit_DsdDecomposeMux( unsigned * pTruth, int nVars, int nDecMux )
-{
-    return Kit_DsdDecomposeInt( pTruth, nVars, nDecMux );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdTestCofs( Kit_DsdNtk_t * pNtk, unsigned * pTruthInit )
-{
-    Kit_DsdNtk_t * pNtk0, * pNtk1, * pTemp;
-//    Kit_DsdObj_t * pRoot;
-    unsigned * pCofs2[2] = { pNtk->pMem, pNtk->pMem + Kit_TruthWordNum(pNtk->nVars) };
-    unsigned i, * pTruth;
-    int fVerbose = 1;
-    int RetValue = 0;
-
-    pTruth = pTruthInit;
-//    pRoot = Kit_DsdNtkRoot(pNtk);
-//    pTruth = Kit_DsdObjTruth(pRoot);
-//    assert( pRoot->nFans == pNtk->nVars );
-
-    if ( fVerbose )
-    {
-        printf( "Function: " );
-//        Extra_PrintBinary( stdout, pTruth, (1 << pNtk->nVars) ); 
-        Extra_PrintHexadecimal( stdout, pTruth, pNtk->nVars ); 
-        printf( "\n" );
-        Kit_DsdPrint( stdout, pNtk );
-    }
-    for ( i = 0; i < pNtk->nVars; i++ )
-    {
-        Kit_TruthCofactor0New( pCofs2[0], pTruth, pNtk->nVars, i );
-        pNtk0 = Kit_DsdDecompose( pCofs2[0], pNtk->nVars );
-        pNtk0 = Kit_DsdExpand( pTemp = pNtk0 );
-        Kit_DsdNtkFree( pTemp );
-
-        if ( fVerbose )
-        {
-            printf( "Cof%d0: ", i );
-            Kit_DsdPrint( stdout, pNtk0 );
-        }
-
-        Kit_TruthCofactor1New( pCofs2[1], pTruth, pNtk->nVars, i );
-        pNtk1 = Kit_DsdDecompose( pCofs2[1], pNtk->nVars );
-        pNtk1 = Kit_DsdExpand( pTemp = pNtk1 );
-        Kit_DsdNtkFree( pTemp );
-
-        if ( fVerbose )
-        {
-            printf( "Cof%d1: ", i );
-            Kit_DsdPrint( stdout, pNtk1 );
-        }
-
-//        if ( Kit_DsdCheckVar4Dec2( pNtk0, pNtk1 ) )
-//            RetValue = 1;
-
-        Kit_DsdNtkFree( pNtk0 );
-        Kit_DsdNtkFree( pNtk1 );
-    }
-    if ( fVerbose )
-        printf( "\n" );
-
-    return RetValue;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdEval( unsigned * pTruth, int nVars, int nLutSize )
-{
-    Kit_DsdMan_t * p;
-    Kit_DsdNtk_t * pNtk;
-    unsigned * pTruthC;
-    int Result;
-
-    // decompose the function
-    pNtk = Kit_DsdDecompose( pTruth, nVars );
-    Result = Kit_DsdCountLuts( pNtk, nLutSize );
-//    printf( "\n" );
-//    Kit_DsdPrint( stdout, pNtk );
-//    printf( "Eval = %d.\n", Result );
-
-    // recompute the truth table
-    p = Kit_DsdManAlloc( nVars, Kit_DsdNtkObjNum(pNtk) );
-    pTruthC = Kit_DsdTruthCompute( p, pNtk );
-    if ( !Kit_TruthIsEqual( pTruth, pTruthC, nVars ) )
-        printf( "Verification failed.\n" );
-    Kit_DsdManFree( p );
-
-    Kit_DsdNtkFree( pNtk );
-    return Result;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdVerify( Kit_DsdNtk_t * pNtk, unsigned * pTruth, int nVars )
-{
-    Kit_DsdMan_t * p;
-    unsigned * pTruthC;
-    p = Kit_DsdManAlloc( nVars, Kit_DsdNtkObjNum(pNtk)+2 );
-    pTruthC = Kit_DsdTruthCompute( p, pNtk );
-    if ( !Extra_TruthIsEqual( pTruth, pTruthC, nVars ) )
-        printf( "Verification failed.\n" );
-    Kit_DsdManFree( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdTest( unsigned * pTruth, int nVars )
-{
-    Kit_DsdMan_t * p;
-    unsigned * pTruthC;
-    Kit_DsdNtk_t * pNtk, * pTemp;
-    pNtk = Kit_DsdDecompose( pTruth, nVars );
-
-//    if ( Kit_DsdFindLargeBox(pNtk, Kit_DsdLit2Var(pNtk->Root)) )
-//        Kit_DsdPrint( stdout, pNtk );
-
-//    if ( Kit_DsdNtkRoot(pNtk)->nFans == (unsigned)nVars && nVars == 6 )
-
-    printf( "\n" );
-    Kit_DsdPrint( stdout, pNtk );
-
-    pNtk = Kit_DsdExpand( pTemp = pNtk );
-    Kit_DsdNtkFree( pTemp );
-
-    Kit_DsdPrint( stdout, pNtk );
-
-//    if ( Kit_DsdFindLargeBox(pNtk, Kit_DsdLit2Var(pNtk->Root)) )
-//        Kit_DsdTestCofs( pNtk, pTruth );
-
-    // recompute the truth table
-    p = Kit_DsdManAlloc( nVars, Kit_DsdNtkObjNum(pNtk) );
-    pTruthC = Kit_DsdTruthCompute( p, pNtk );
-//    Extra_PrintBinary( stdout, pTruth, 1 << nVars ); printf( "\n" );
-//    Extra_PrintBinary( stdout, pTruthC, 1 << nVars ); printf( "\n" );
-    if ( Extra_TruthIsEqual( pTruth, pTruthC, nVars ) )
-    {
-//        printf( "Verification is okay.\n" );
-    }
-    else
-        printf( "Verification failed.\n" );
-    Kit_DsdManFree( p );
-
-
-    Kit_DsdNtkFree( pNtk );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Performs decomposition of the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdPrecompute4Vars()
-{
-    Kit_DsdMan_t * p;
-    Kit_DsdNtk_t * pNtk, * pTemp;
-    FILE * pFile;
-    unsigned uTruth;
-    unsigned * pTruthC;
-    char Buffer[256];
-    int i, RetValue;
-    int Counter1 = 0, Counter2 = 0;
-
-    pFile = fopen( "5npn/npn4.txt", "r" );
-    for ( i = 0; fgets( Buffer, 100, pFile ); i++ )
-    {
-        Buffer[6] = 0;
-        Extra_ReadHexadecimal( &uTruth, Buffer+2, 4 );
-        uTruth = ((uTruth & 0xffff) << 16) | (uTruth & 0xffff);
-        pNtk = Kit_DsdDecompose( &uTruth, 4 );
-
-        pNtk = Kit_DsdExpand( pTemp = pNtk );
-        Kit_DsdNtkFree( pTemp );
-
-
-        if ( Kit_DsdFindLargeBox(pNtk, 3) )
-        {
-//            RetValue = 0;
-            RetValue = Kit_DsdTestCofs( pNtk, &uTruth );
-            printf( "\n" );
-            printf( "%3d : Non-DSD function  %s  %s\n", i, Buffer + 2, RetValue? "implementable" : "" );
-            Kit_DsdPrint( stdout, pNtk );
-
-            Counter1++;
-            Counter2 += RetValue;
-        }
-
-/*
-        printf( "%3d : Function  %s   ", i, Buffer + 2 );
-        if ( !Kit_DsdFindLargeBox(pNtk, 3) )
-            Kit_DsdPrint( stdout, pNtk );
-        else
-            printf( "\n" );
-*/
-
-        p = Kit_DsdManAlloc( 4, Kit_DsdNtkObjNum(pNtk) );
-        pTruthC = Kit_DsdTruthCompute( p, pNtk );
-        if ( !Extra_TruthIsEqual( &uTruth, pTruthC, 4 ) )
-            printf( "Verification failed.\n" );
-        Kit_DsdManFree( p );
-
-        Kit_DsdNtkFree( pNtk );
-    }
-    fclose( pFile );
-    printf( "non-DSD = %d   implementable = %d\n", Counter1, Counter2 );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the set of cofactoring variables.]
-
-  Description [If there is no DSD components returns 0.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdCofactoringGetVars( Kit_DsdNtk_t ** ppNtk, int nSize, int * pVars )
-{
-    Kit_DsdObj_t * pObj;
-    unsigned m;
-    int i, k, v, Var, nVars, iFaninLit;
-    // go through all the networks
-    nVars = 0;
-    for ( i = 0; i < nSize; i++ )
-    {
-        // go through the prime objects of each networks
-        Kit_DsdNtkForEachObj( ppNtk[i], pObj, k )     
-        {
-            if ( pObj->Type != KIT_DSD_PRIME )
-                continue;
-            if ( pObj->nFans == 3 )
-                continue;
-            // collect direct fanin variables
-            Kit_DsdObjForEachFanin( ppNtk[i], pObj, iFaninLit, m )
-            {
-                if ( !Kit_DsdLitIsLeaf(ppNtk[i], iFaninLit) )
-                    continue;
-                // add it to the array
-                Var = Kit_DsdLit2Var( iFaninLit );
-                for ( v = 0; v < nVars; v++ )
-                    if ( pVars[v] == Var )
-                        break;
-                if ( v == nVars )
-                    pVars[nVars++] = Var;
-            }
-        }
-    }
-    return nVars;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Canonical decomposition into completely DSD-structure.]
-
-  Description [Returns the number of cofactoring steps. Also returns
-  the cofactoring variables in pVars.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_DsdCofactoring( unsigned * pTruth, int nVars, int * pCofVars, int nLimit, int fVerbose )
-{
-    Kit_DsdNtk_t * ppNtks[5][16] = {0}, * pTemp;
-    unsigned * ppCofs[5][16];
-    int pTryVars[16], nTryVars;
-    int nPrimeSizeMin, nPrimeSizeMax, nPrimeSizeCur;
-    int nSuppSizeMin, nSuppSizeMax, iVarBest;
-    int i, k, v, nStep, nSize, nMemSize;
-    assert( nLimit < 5 );
-
-    // allocate storage for cofactors
-    nMemSize = Kit_TruthWordNum(nVars);
-    ppCofs[0][0] = ALLOC( unsigned, 80 * nMemSize );
-    nSize = 0;
-    for ( i = 0; i <  5; i++ )
-    for ( k = 0; k < 16; k++ )
-        ppCofs[i][k] = ppCofs[0][0] + nMemSize * nSize++;
-    assert( nSize == 80 );
-
-    // copy the function
-    Kit_TruthCopy( ppCofs[0][0], pTruth, nVars );
-    ppNtks[0][0] = Kit_DsdDecompose( ppCofs[0][0], nVars );
-
-    if ( fVerbose )
-        printf( "\nProcessing prime function with %d support variables:\n", nVars );
-
-    // perform recursive cofactoring
-    for ( nStep = 0; nStep < nLimit; nStep++ )
-    {
-        nSize = (1 << nStep);
-        // find the variables to use in the cofactoring step
-        nTryVars = Kit_DsdCofactoringGetVars( ppNtks[nStep], nSize, pTryVars );
-        if ( nTryVars == 0 )
-            break;
-        // cofactor w.r.t. the above variables
-        iVarBest = -1;
-        nPrimeSizeMin = 10000;
-        nSuppSizeMin  = 10000;
-        for ( v = 0; v < nTryVars; v++ )
-        {
-            nPrimeSizeMax = 0;
-            nSuppSizeMax = 0;
-            for ( i = 0; i < nSize; i++ )
-            {
-                // cofactor and decompose cofactors          
-                Kit_TruthCofactor0New( ppCofs[nStep+1][2*i+0], ppCofs[nStep][i], nVars, pTryVars[v] );
-                Kit_TruthCofactor1New( ppCofs[nStep+1][2*i+1], ppCofs[nStep][i], nVars, pTryVars[v] );
-                ppNtks[nStep+1][2*i+0] = Kit_DsdDecompose( ppCofs[nStep+1][2*i+0], nVars );
-                ppNtks[nStep+1][2*i+1] = Kit_DsdDecompose( ppCofs[nStep+1][2*i+1], nVars );
-                // compute the largest non-decomp block
-                nPrimeSizeCur  = Kit_DsdNonDsdSizeMax(ppNtks[nStep+1][2*i+0]);
-                nPrimeSizeMax  = KIT_MAX( nPrimeSizeMax, nPrimeSizeCur );
-                nPrimeSizeCur  = Kit_DsdNonDsdSizeMax(ppNtks[nStep+1][2*i+1]);
-                nPrimeSizeMax  = KIT_MAX( nPrimeSizeMax, nPrimeSizeCur );
-                // compute the sum total of supports
-                nSuppSizeMax += Kit_TruthSupportSize( ppCofs[nStep+1][2*i+0], nVars );
-                nSuppSizeMax += Kit_TruthSupportSize( ppCofs[nStep+1][2*i+1], nVars );
-                // free the networks
-                Kit_DsdNtkFree( ppNtks[nStep+1][2*i+0] );
-                Kit_DsdNtkFree( ppNtks[nStep+1][2*i+1] );
-            }
-            // find the min max support size of the prime component
-            if ( nPrimeSizeMin > nPrimeSizeMax || (nPrimeSizeMin == nPrimeSizeMax && nSuppSizeMin > nSuppSizeMax) )
-            {
-                nPrimeSizeMin = nPrimeSizeMax;
-                nSuppSizeMin  = nSuppSizeMax;
-                iVarBest      = pTryVars[v];
-            }
-        }
-        assert( iVarBest != -1 );
-        // save the variable
-        if ( pCofVars )
-            pCofVars[nStep] = iVarBest;
-        // cofactor w.r.t. the best
-        for ( i = 0; i < nSize; i++ )
-        {
-            Kit_TruthCofactor0New( ppCofs[nStep+1][2*i+0], ppCofs[nStep][i], nVars, iVarBest );
-            Kit_TruthCofactor1New( ppCofs[nStep+1][2*i+1], ppCofs[nStep][i], nVars, iVarBest );
-            ppNtks[nStep+1][2*i+0] = Kit_DsdDecompose( ppCofs[nStep+1][2*i+0], nVars );
-            ppNtks[nStep+1][2*i+1] = Kit_DsdDecompose( ppCofs[nStep+1][2*i+1], nVars );
-            if ( fVerbose )
-            {
-                ppNtks[nStep+1][2*i+0] = Kit_DsdExpand( pTemp = ppNtks[nStep+1][2*i+0] );
-                Kit_DsdNtkFree( pTemp );
-                ppNtks[nStep+1][2*i+1] = Kit_DsdExpand( pTemp = ppNtks[nStep+1][2*i+1] );
-                Kit_DsdNtkFree( pTemp );
-
-                printf( "Cof%d%d: ", nStep+1, 2*i+0 );
-                Kit_DsdPrint( stdout, ppNtks[nStep+1][2*i+0] );
-                printf( "Cof%d%d: ", nStep+1, 2*i+1 );
-                Kit_DsdPrint( stdout, ppNtks[nStep+1][2*i+1] );
-            }
-        }
-    }
-
-    // free the networks
-    for ( i = 0; i <  5; i++ )
-    for ( k = 0; k < 16; k++ )
-        if ( ppNtks[i][k] )
-            Kit_DsdNtkFree( ppNtks[i][k] );
-    free( ppCofs[0][0] );
-
-    assert( nStep <= nLimit );
-    return nStep;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Canonical decomposition into completely DSD-structure.]
-
-  Description [Returns the number of cofactoring steps. Also returns
-  the cofactoring variables in pVars.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_DsdPrintCofactors( unsigned * pTruth, int nVars, int nCofLevel, int fVerbose )
-{
-    Kit_DsdNtk_t * ppNtks[32] = {0}, * pTemp;
-    unsigned * ppCofs[5][16];
-    int piCofVar[5];
-    int nPrimeSizeMax, nPrimeSizeCur, nSuppSizeMax;
-    int i, k, v1, v2, v3, v4, s, nSteps, nSize, nMemSize;
-    assert( nCofLevel < 5 );
-
-    // print the function
-    ppNtks[0] = Kit_DsdDecompose( pTruth, nVars );
-    ppNtks[0] = Kit_DsdExpand( pTemp = ppNtks[0] );
-    Kit_DsdNtkFree( pTemp );
-    if ( fVerbose )
-        Kit_DsdPrint( stdout, ppNtks[0] );
-    Kit_DsdNtkFree( ppNtks[0] );
-
-    // allocate storage for cofactors
-    nMemSize = Kit_TruthWordNum(nVars);
-    ppCofs[0][0] = ALLOC( unsigned, 80 * nMemSize );
-    nSize = 0;
-    for ( i = 0; i <  5; i++ )
-    for ( k = 0; k < 16; k++ )
-        ppCofs[i][k] = ppCofs[0][0] + nMemSize * nSize++;
-    assert( nSize == 80 );
-
-    // copy the function
-    Kit_TruthCopy( ppCofs[0][0], pTruth, nVars );
-
-    if ( nCofLevel == 1 )
-    for ( v1 = 0; v1 < nVars; v1++ )
-    {
-        nSteps = 0;
-        piCofVar[nSteps++] = v1;
-
-        printf( "    Variables { " );
-        for ( i = 0; i < nSteps; i++ )
-            printf( "%c ", 'a' + piCofVar[i] );
-        printf( "}\n" );
-
-        // single cofactors
-        for ( s = 1; s <= nSteps; s++ )
-        {
-            for ( k = 0; k < s; k++ )
-            {
-                nSize = (1 << k);
-                for ( i = 0; i < nSize; i++ )
-                {
-                    Kit_TruthCofactor0New( ppCofs[k+1][2*i+0], ppCofs[k][i], nVars, piCofVar[k] );
-                    Kit_TruthCofactor1New( ppCofs[k+1][2*i+1], ppCofs[k][i], nVars, piCofVar[k] );
-                }
-            }
-        }
-        // compute DSD networks
-        nSize = (1 << nSteps);
-        nPrimeSizeMax = 0;
-        nSuppSizeMax = 0;
-        for ( i = 0; i < nSize; i++ )
-        {
-            ppNtks[i] = Kit_DsdDecompose( ppCofs[nSteps][i], nVars );
-            ppNtks[i] = Kit_DsdExpand( pTemp = ppNtks[i] );
-            Kit_DsdNtkFree( pTemp );
-            if ( fVerbose )
-            {
-                printf( "Cof%d%d: ", nSteps, i );
-                Kit_DsdPrint( stdout, ppNtks[i] );
-            }
-            // compute the largest non-decomp block
-            nPrimeSizeCur  = Kit_DsdNonDsdSizeMax(ppNtks[i]);
-            nPrimeSizeMax  = KIT_MAX( nPrimeSizeMax, nPrimeSizeCur );
-            Kit_DsdNtkFree( ppNtks[i] );
-            nSuppSizeMax += Kit_TruthSupportSize( ppCofs[nSteps][i], nVars );
-        }
-        printf( "Max = %2d. Supps = %2d.\n", nPrimeSizeMax, nSuppSizeMax );
-    }
-
-    if ( nCofLevel == 2 )
-    for ( v1 = 0; v1 < nVars; v1++ )
-    for ( v2 = v1+1; v2 < nVars; v2++ )
-    {
-        nSteps = 0;
-        piCofVar[nSteps++] = v1;
-        piCofVar[nSteps++] = v2;
-
-        printf( "    Variables { " );
-        for ( i = 0; i < nSteps; i++ )
-            printf( "%c ", 'a' + piCofVar[i] );
-        printf( "}\n" );
-
-        // single cofactors
-        for ( s = 1; s <= nSteps; s++ )
-        {
-            for ( k = 0; k < s; k++ )
-            {
-                nSize = (1 << k);
-                for ( i = 0; i < nSize; i++ )
-                {
-                    Kit_TruthCofactor0New( ppCofs[k+1][2*i+0], ppCofs[k][i], nVars, piCofVar[k] );
-                    Kit_TruthCofactor1New( ppCofs[k+1][2*i+1], ppCofs[k][i], nVars, piCofVar[k] );
-                }
-            }
-        }
-        // compute DSD networks
-        nSize = (1 << nSteps);
-        nPrimeSizeMax = 0;
-        nSuppSizeMax = 0;
-        for ( i = 0; i < nSize; i++ )
-        {
-            ppNtks[i] = Kit_DsdDecompose( ppCofs[nSteps][i], nVars );
-            ppNtks[i] = Kit_DsdExpand( pTemp = ppNtks[i] );
-            Kit_DsdNtkFree( pTemp );
-            if ( fVerbose )
-            {
-                printf( "Cof%d%d: ", nSteps, i );
-                Kit_DsdPrint( stdout, ppNtks[i] );
-            }
-            // compute the largest non-decomp block
-            nPrimeSizeCur  = Kit_DsdNonDsdSizeMax(ppNtks[i]);
-            nPrimeSizeMax  = KIT_MAX( nPrimeSizeMax, nPrimeSizeCur );
-            Kit_DsdNtkFree( ppNtks[i] );
-            nSuppSizeMax += Kit_TruthSupportSize( ppCofs[nSteps][i], nVars );
-        }
-        printf( "Max = %2d. Supps = %2d.\n", nPrimeSizeMax, nSuppSizeMax );
-    }
-
-    if ( nCofLevel == 3 )
-    for ( v1 = 0; v1 < nVars; v1++ )
-    for ( v2 = v1+1; v2 < nVars; v2++ )
-    for ( v3 = v2+1; v3 < nVars; v3++ )
-    {
-        nSteps = 0;
-        piCofVar[nSteps++] = v1;
-        piCofVar[nSteps++] = v2;
-        piCofVar[nSteps++] = v3;
-
-        printf( "    Variables { " );
-        for ( i = 0; i < nSteps; i++ )
-            printf( "%c ", 'a' + piCofVar[i] );
-        printf( "}\n" );
-
-        // single cofactors
-        for ( s = 1; s <= nSteps; s++ )
-        {
-            for ( k = 0; k < s; k++ )
-            {
-                nSize = (1 << k);
-                for ( i = 0; i < nSize; i++ )
-                {
-                    Kit_TruthCofactor0New( ppCofs[k+1][2*i+0], ppCofs[k][i], nVars, piCofVar[k] );
-                    Kit_TruthCofactor1New( ppCofs[k+1][2*i+1], ppCofs[k][i], nVars, piCofVar[k] );
-                }
-            }
-        }
-        // compute DSD networks
-        nSize = (1 << nSteps);
-        nPrimeSizeMax = 0;
-        nSuppSizeMax = 0;
-        for ( i = 0; i < nSize; i++ )
-        {
-            ppNtks[i] = Kit_DsdDecompose( ppCofs[nSteps][i], nVars );
-            ppNtks[i] = Kit_DsdExpand( pTemp = ppNtks[i] );
-            Kit_DsdNtkFree( pTemp );
-            if ( fVerbose )
-            {
-                printf( "Cof%d%d: ", nSteps, i );
-                Kit_DsdPrint( stdout, ppNtks[i] );
-            }
-            // compute the largest non-decomp block
-            nPrimeSizeCur  = Kit_DsdNonDsdSizeMax(ppNtks[i]);
-            nPrimeSizeMax  = KIT_MAX( nPrimeSizeMax, nPrimeSizeCur );
-            Kit_DsdNtkFree( ppNtks[i] );
-            nSuppSizeMax += Kit_TruthSupportSize( ppCofs[nSteps][i], nVars );
-        }
-        printf( "Max = %2d. Supps = %2d.\n", nPrimeSizeMax, nSuppSizeMax );
-    }
-
-    if ( nCofLevel == 4 )
-    for ( v1 = 0; v1 < nVars; v1++ )
-    for ( v2 = v1+1; v2 < nVars; v2++ )
-    for ( v3 = v2+1; v3 < nVars; v3++ )
-    for ( v4 = v3+1; v4 < nVars; v4++ )
-    {
-        nSteps = 0;
-        piCofVar[nSteps++] = v1;
-        piCofVar[nSteps++] = v2;
-        piCofVar[nSteps++] = v3;
-        piCofVar[nSteps++] = v4;
-
-        printf( "    Variables { " );
-        for ( i = 0; i < nSteps; i++ )
-            printf( "%c ", 'a' + piCofVar[i] );
-        printf( "}\n" );
-
-        // single cofactors
-        for ( s = 1; s <= nSteps; s++ )
-        {
-            for ( k = 0; k < s; k++ )
-            {
-                nSize = (1 << k);
-                for ( i = 0; i < nSize; i++ )
-                {
-                    Kit_TruthCofactor0New( ppCofs[k+1][2*i+0], ppCofs[k][i], nVars, piCofVar[k] );
-                    Kit_TruthCofactor1New( ppCofs[k+1][2*i+1], ppCofs[k][i], nVars, piCofVar[k] );
-                }
-            }
-        }
-        // compute DSD networks
-        nSize = (1 << nSteps);
-        nPrimeSizeMax = 0;
-        nSuppSizeMax = 0;
-        for ( i = 0; i < nSize; i++ )
-        {
-            ppNtks[i] = Kit_DsdDecompose( ppCofs[nSteps][i], nVars );
-            ppNtks[i] = Kit_DsdExpand( pTemp = ppNtks[i] );
-            Kit_DsdNtkFree( pTemp );
-            if ( fVerbose )
-            {
-                printf( "Cof%d%d: ", nSteps, i );
-                Kit_DsdPrint( stdout, ppNtks[i] );
-            }
-            // compute the largest non-decomp block
-            nPrimeSizeCur  = Kit_DsdNonDsdSizeMax(ppNtks[i]);
-            nPrimeSizeMax  = KIT_MAX( nPrimeSizeMax, nPrimeSizeCur );
-            Kit_DsdNtkFree( ppNtks[i] );
-            nSuppSizeMax += Kit_TruthSupportSize( ppCofs[nSteps][i], nVars );
-        }
-        printf( "Max = %2d. Supps = %2d.\n", nPrimeSizeMax, nSuppSizeMax );
-    }
-
-
-    free( ppCofs[0][0] );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/kitFactor.c b/src/aig/kit/kitFactor.c
deleted file mode 100644
index 4ef3fd94..00000000
--- a/src/aig/kit/kitFactor.c
+++ /dev/null
@@ -1,338 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitFactor.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [Algebraic factoring.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitFactor.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// factoring fails if intermediate memory usage exceed this limit
-#define KIT_FACTOR_MEM_LIMIT  (1<<16)
-
-static Kit_Edge_t  Kit_SopFactor_rec( Kit_Graph_t * pFForm, Kit_Sop_t * cSop, int nLits, Vec_Int_t * vMemory );
-static Kit_Edge_t  Kit_SopFactorLF_rec( Kit_Graph_t * pFForm, Kit_Sop_t * cSop, Kit_Sop_t * cSimple, int nLits, Vec_Int_t * vMemory );
-static Kit_Edge_t  Kit_SopFactorTrivial( Kit_Graph_t * pFForm, Kit_Sop_t * cSop, int nLits );
-static Kit_Edge_t  Kit_SopFactorTrivialCube( Kit_Graph_t * pFForm, unsigned uCube, int nLits );
-
-extern int         Kit_SopFactorVerify( Vec_Int_t * cSop, Kit_Graph_t * pFForm, int nVars );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Factors the cover.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Graph_t * Kit_SopFactor( Vec_Int_t * vCover, int fCompl, int nVars, Vec_Int_t * vMemory )
-{
-    Kit_Sop_t Sop, Res;
-    Kit_Sop_t * cSop = &Sop, * cRes = &Res;
-    Kit_Graph_t * pFForm;
-    Kit_Edge_t eRoot;
-    int nCubes = Vec_IntSize(vCover);
-
-    // works for up to 15 variables because divisin procedure
-    // used the last bit for marking the cubes going to the remainder
-    assert( nVars < 16 );
-
-    // check for trivial functions
-    if ( Vec_IntSize(vCover) == 0 )
-        return Kit_GraphCreateConst0();
-    if ( Vec_IntSize(vCover) == 1 && Vec_IntEntry(vCover, 0) == 0 ) //(int)Kit_CubeMask(2 * nVars) )
-        return Kit_GraphCreateConst1();
-
-    // prepare memory manager
-//    Vec_IntClear( vMemory );
-    Vec_IntGrow( vMemory, KIT_FACTOR_MEM_LIMIT );
-
-    // perform CST
-    Kit_SopCreateInverse( cSop, vCover, 2 * nVars, vMemory ); // CST
-
-    // start the factored form
-    pFForm = Kit_GraphCreate( nVars );
-    // factor the cover
-    eRoot = Kit_SopFactor_rec( pFForm, cSop, 2 * nVars, vMemory );
-    // finalize the factored form
-    Kit_GraphSetRoot( pFForm, eRoot );
-    if ( fCompl )
-        Kit_GraphComplement( pFForm );
-
-    // verify the factored form
-//    Vec_IntShrink( vCover, nCubes );
-//    if ( !Kit_SopFactorVerify( vCover, pFForm, nVars ) )
-//        printf( "Verification has failed.\n" );
-    return pFForm;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Recursive factoring procedure.]
-
-  Description [For the pseudo-code, see Hachtel/Somenzi, 
-  Logic synthesis and verification algorithms, Kluwer, 1996, p. 432.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_SopFactor_rec( Kit_Graph_t * pFForm, Kit_Sop_t * cSop, int nLits, Vec_Int_t * vMemory )
-{
-    Kit_Sop_t Div, Quo, Rem, Com;
-    Kit_Sop_t * cDiv = &Div, * cQuo = &Quo, * cRem = &Rem, * cCom = &Com;
-    Kit_Edge_t eNodeDiv, eNodeQuo, eNodeRem, eNodeAnd;
-
-    // make sure the cover contains some cubes
-    assert( Kit_SopCubeNum(cSop) > 0 );
-
-    // get the divisor
-    if ( !Kit_SopDivisor(cDiv, cSop, nLits, vMemory) )
-        return Kit_SopFactorTrivial( pFForm, cSop, nLits );
-
-    // divide the cover by the divisor
-    Kit_SopDivideInternal( cSop, cDiv, cQuo, cRem, vMemory );
-
-    // check the trivial case
-    assert( Kit_SopCubeNum(cQuo) > 0 );
-    if ( Kit_SopCubeNum(cQuo) == 1 )
-        return Kit_SopFactorLF_rec( pFForm, cSop, cQuo, nLits, vMemory );
-
-    // make the quotient cube free
-    Kit_SopMakeCubeFree( cQuo );
-
-    // divide the cover by the quotient
-    Kit_SopDivideInternal( cSop, cQuo, cDiv, cRem, vMemory );
-
-    // check the trivial case
-    if ( Kit_SopIsCubeFree( cDiv ) )
-    {
-        eNodeDiv = Kit_SopFactor_rec( pFForm, cDiv, nLits, vMemory );
-        eNodeQuo = Kit_SopFactor_rec( pFForm, cQuo, nLits, vMemory );
-        eNodeAnd = Kit_GraphAddNodeAnd( pFForm, eNodeDiv, eNodeQuo );
-        if ( Kit_SopCubeNum(cRem) == 0 )
-            return eNodeAnd;
-        eNodeRem = Kit_SopFactor_rec( pFForm, cRem, nLits, vMemory );
-        return Kit_GraphAddNodeOr( pFForm, eNodeAnd, eNodeRem );
-    }
-
-    // get the common cube
-    Kit_SopCommonCubeCover( cCom, cDiv, vMemory );
-
-    // solve the simple problem
-    return Kit_SopFactorLF_rec( pFForm, cSop, cCom, nLits, vMemory );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Internal recursive factoring procedure for the leaf case.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_SopFactorLF_rec( Kit_Graph_t * pFForm, Kit_Sop_t * cSop, Kit_Sop_t * cSimple, int nLits, Vec_Int_t * vMemory )
-{
-    Kit_Sop_t Div, Quo, Rem;
-    Kit_Sop_t * cDiv = &Div, * cQuo = &Quo, * cRem = &Rem;
-    Kit_Edge_t eNodeDiv, eNodeQuo, eNodeRem, eNodeAnd;
-    assert( Kit_SopCubeNum(cSimple) == 1 );
-    // get the most often occurring literal
-    Kit_SopBestLiteralCover( cDiv, cSop, Kit_SopCube(cSimple, 0), nLits, vMemory );
-    // divide the cover by the literal
-    Kit_SopDivideByCube( cSop, cDiv, cQuo, cRem, vMemory );
-    // get the node pointer for the literal
-    eNodeDiv = Kit_SopFactorTrivialCube( pFForm, Kit_SopCube(cDiv, 0), nLits );
-    // factor the quotient and remainder
-    eNodeQuo = Kit_SopFactor_rec( pFForm, cQuo, nLits, vMemory );
-    eNodeAnd = Kit_GraphAddNodeAnd( pFForm, eNodeDiv, eNodeQuo );
-    if ( Kit_SopCubeNum(cRem) == 0 )
-        return eNodeAnd;
-    eNodeRem = Kit_SopFactor_rec( pFForm, cRem, nLits, vMemory );
-    return Kit_GraphAddNodeOr( pFForm, eNodeAnd, eNodeRem );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Factoring cube.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_SopFactorTrivialCube_rec( Kit_Graph_t * pFForm, unsigned uCube, int nStart, int nFinish )
-{
-    Kit_Edge_t eNode1, eNode2;
-    int i, iLit, nLits, nLits1, nLits2;
-    assert( uCube );
-    // count the number of literals in this interval
-    nLits = 0;
-    for ( i = nStart; i < nFinish; i++ )
-        if ( Kit_CubeHasLit(uCube, i) )
-        {
-            iLit = i;
-            nLits++;
-        }
-    // quit if there is only one literal        
-    if ( nLits == 1 )
-        return Kit_EdgeCreate( iLit/2, iLit%2 ); // CST
-    // split the literals into two parts
-    nLits1 = nLits/2;
-    nLits2 = nLits - nLits1;
-//    nLits2 = nLits/2;
-//    nLits1 = nLits - nLits2;
-    // find the splitting point
-    nLits = 0;
-    for ( i = nStart; i < nFinish; i++ )
-        if ( Kit_CubeHasLit(uCube, i) )
-        {
-            if ( nLits == nLits1 )
-                break;
-            nLits++;
-        }
-    // recursively construct the tree for the parts
-    eNode1 = Kit_SopFactorTrivialCube_rec( pFForm, uCube, nStart, i  );
-    eNode2 = Kit_SopFactorTrivialCube_rec( pFForm, uCube, i, nFinish );
-    return Kit_GraphAddNodeAnd( pFForm, eNode1, eNode2 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Factoring cube.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_SopFactorTrivialCube( Kit_Graph_t * pFForm, unsigned uCube, int nLits )
-{
-    return Kit_SopFactorTrivialCube_rec( pFForm, uCube, 0, nLits );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Factoring SOP.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_SopFactorTrivial_rec( Kit_Graph_t * pFForm, unsigned * pCubes, int nCubes, int nLits )
-{
-    Kit_Edge_t eNode1, eNode2;
-    int nCubes1, nCubes2;
-    if ( nCubes == 1 )
-        return Kit_SopFactorTrivialCube_rec( pFForm, pCubes[0], 0, nLits );
-    // split the cubes into two parts
-    nCubes1 = nCubes/2;
-    nCubes2 = nCubes - nCubes1;
-//    nCubes2 = nCubes/2;
-//    nCubes1 = nCubes - nCubes2;
-    // recursively construct the tree for the parts
-    eNode1 = Kit_SopFactorTrivial_rec( pFForm, pCubes,           nCubes1, nLits );
-    eNode2 = Kit_SopFactorTrivial_rec( pFForm, pCubes + nCubes1, nCubes2, nLits );
-    return Kit_GraphAddNodeOr( pFForm, eNode1, eNode2 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Factoring the cover, which has no algebraic divisors.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_SopFactorTrivial( Kit_Graph_t * pFForm, Kit_Sop_t * cSop, int nLits )
-{
-    return Kit_SopFactorTrivial_rec( pFForm, cSop->pCubes, cSop->nCubes, nLits );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Testing procedure for the factoring code.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_FactorTest( unsigned * pTruth, int nVars )
-{
-    Vec_Int_t * vCover, * vMemory;
-    Kit_Graph_t * pGraph;
-//    unsigned uTruthRes;
-    int RetValue;
-
-    // derive SOP
-    vCover = Vec_IntAlloc( 0 );
-    RetValue = Kit_TruthIsop( pTruth, nVars, vCover, 0 );
-    assert( RetValue == 0 );
-
-    // derive factored form
-    vMemory = Vec_IntAlloc( 0 );
-    pGraph = Kit_SopFactor( vCover, 0, nVars, vMemory );
-/*
-    // derive truth table
-    assert( nVars <= 5 );
-    uTruthRes = Kit_GraphToTruth( pGraph );
-    if ( uTruthRes != pTruth[0] )
-        printf( "Verification failed!" );
-*/
-    printf( "Vars = %2d. Cubes = %3d. FFNodes = %3d. FF_memory = %3d.\n",
-        nVars, Vec_IntSize(vCover), Kit_GraphNodeNum(pGraph), Vec_IntSize(vMemory) );
-
-    Vec_IntFree( vMemory );
-    Vec_IntFree( vCover );
-    Kit_GraphFree( pGraph );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/kitGraph.c b/src/aig/kit/kitGraph.c
deleted file mode 100644
index 8bc7ca91..00000000
--- a/src/aig/kit/kitGraph.c
+++ /dev/null
@@ -1,397 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitGraph.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [Decomposition graph representation.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitGraph.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Creates a graph with the given number of leaves.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Graph_t * Kit_GraphCreate( int nLeaves )   
-{
-    Kit_Graph_t * pGraph;
-    pGraph = ALLOC( Kit_Graph_t, 1 );
-    memset( pGraph, 0, sizeof(Kit_Graph_t) );
-    pGraph->nLeaves = nLeaves;
-    pGraph->nSize = nLeaves;
-    pGraph->nCap = 2 * nLeaves + 50;
-    pGraph->pNodes = ALLOC( Kit_Node_t, pGraph->nCap );
-    memset( pGraph->pNodes, 0, sizeof(Kit_Node_t) * pGraph->nSize );
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates constant 0 graph.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Graph_t * Kit_GraphCreateConst0()   
-{
-    Kit_Graph_t * pGraph;
-    pGraph = ALLOC( Kit_Graph_t, 1 );
-    memset( pGraph, 0, sizeof(Kit_Graph_t) );
-    pGraph->fConst = 1;
-    pGraph->eRoot.fCompl = 1;
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates constant 1 graph.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Graph_t * Kit_GraphCreateConst1()   
-{
-    Kit_Graph_t * pGraph;
-    pGraph = ALLOC( Kit_Graph_t, 1 );
-    memset( pGraph, 0, sizeof(Kit_Graph_t) );
-    pGraph->fConst = 1;
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the literal graph.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Graph_t * Kit_GraphCreateLeaf( int iLeaf, int nLeaves, int fCompl )   
-{
-    Kit_Graph_t * pGraph;
-    assert( 0 <= iLeaf && iLeaf < nLeaves );
-    pGraph = Kit_GraphCreate( nLeaves );
-    pGraph->eRoot.Node   = iLeaf;
-    pGraph->eRoot.fCompl = fCompl;
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates a graph with the given number of leaves.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_GraphFree( Kit_Graph_t * pGraph )   
-{
-    FREE( pGraph->pNodes );
-    free( pGraph );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Appends a new node to the graph.]
-
-  Description [This procedure is meant for internal use.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Node_t * Kit_GraphAppendNode( Kit_Graph_t * pGraph )   
-{
-    Kit_Node_t * pNode;
-    if ( pGraph->nSize == pGraph->nCap )
-    {
-        pGraph->pNodes = REALLOC( Kit_Node_t, pGraph->pNodes, 2 * pGraph->nCap ); 
-        pGraph->nCap   = 2 * pGraph->nCap;
-    }
-    pNode = pGraph->pNodes + pGraph->nSize++;
-    memset( pNode, 0, sizeof(Kit_Node_t) );
-    return pNode;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates an AND node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_GraphAddNodeAnd( Kit_Graph_t * pGraph, Kit_Edge_t eEdge0, Kit_Edge_t eEdge1 )
-{
-    Kit_Node_t * pNode;
-    // get the new node
-    pNode = Kit_GraphAppendNode( pGraph );
-    // set the inputs and other info
-    pNode->eEdge0 = eEdge0;
-    pNode->eEdge1 = eEdge1;
-    pNode->fCompl0 = eEdge0.fCompl;
-    pNode->fCompl1 = eEdge1.fCompl;
-    return Kit_EdgeCreate( pGraph->nSize - 1, 0 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates an OR node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_GraphAddNodeOr( Kit_Graph_t * pGraph, Kit_Edge_t eEdge0, Kit_Edge_t eEdge1 )
-{
-    Kit_Node_t * pNode;
-    // get the new node
-    pNode = Kit_GraphAppendNode( pGraph );
-    // set the inputs and other info
-    pNode->eEdge0 = eEdge0;
-    pNode->eEdge1 = eEdge1;
-    pNode->fCompl0 = eEdge0.fCompl;
-    pNode->fCompl1 = eEdge1.fCompl;
-    // make adjustments for the OR gate
-    pNode->fNodeOr = 1;
-    pNode->eEdge0.fCompl = !pNode->eEdge0.fCompl;
-    pNode->eEdge1.fCompl = !pNode->eEdge1.fCompl;
-    return Kit_EdgeCreate( pGraph->nSize - 1, 1 );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates an XOR node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_GraphAddNodeXor( Kit_Graph_t * pGraph, Kit_Edge_t eEdge0, Kit_Edge_t eEdge1, int Type )
-{
-    Kit_Edge_t eNode0, eNode1, eNode;
-    if ( Type == 0 )
-    {
-        // derive the first AND
-        eEdge0.fCompl ^= 1;
-        eNode0 = Kit_GraphAddNodeAnd( pGraph, eEdge0, eEdge1 );
-        eEdge0.fCompl ^= 1;
-        // derive the second AND
-        eEdge1.fCompl ^= 1;
-        eNode1 = Kit_GraphAddNodeAnd( pGraph, eEdge0, eEdge1 );
-        // derive the final OR
-        eNode = Kit_GraphAddNodeOr( pGraph, eNode0, eNode1 );
-    }
-    else
-    {
-        // derive the first AND
-        eNode0 = Kit_GraphAddNodeAnd( pGraph, eEdge0, eEdge1 );
-        // derive the second AND
-        eEdge0.fCompl ^= 1;
-        eEdge1.fCompl ^= 1;
-        eNode1 = Kit_GraphAddNodeAnd( pGraph, eEdge0, eEdge1 );
-        // derive the final OR
-        eNode = Kit_GraphAddNodeOr( pGraph, eNode0, eNode1 );
-        eNode.fCompl ^= 1;
-    }
-    return eNode;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates an XOR node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Edge_t Kit_GraphAddNodeMux( Kit_Graph_t * pGraph, Kit_Edge_t eEdgeC, Kit_Edge_t eEdgeT, Kit_Edge_t eEdgeE, int Type )
-{
-    Kit_Edge_t eNode0, eNode1, eNode;
-    if ( Type == 0 )
-    {
-        // derive the first AND
-        eNode0 = Kit_GraphAddNodeAnd( pGraph, eEdgeC, eEdgeT );
-        // derive the second AND
-        eEdgeC.fCompl ^= 1;
-        eNode1 = Kit_GraphAddNodeAnd( pGraph, eEdgeC, eEdgeE );
-        // derive the final OR
-        eNode = Kit_GraphAddNodeOr( pGraph, eNode0, eNode1 );
-    }
-    else
-    {
-        // complement the arguments
-        eEdgeT.fCompl ^= 1;
-        eEdgeE.fCompl ^= 1;
-        // derive the first AND
-        eNode0 = Kit_GraphAddNodeAnd( pGraph, eEdgeC, eEdgeT );
-        // derive the second AND
-        eEdgeC.fCompl ^= 1;
-        eNode1 = Kit_GraphAddNodeAnd( pGraph, eEdgeC, eEdgeE );
-        // derive the final OR
-        eNode = Kit_GraphAddNodeOr( pGraph, eNode0, eNode1 );
-        eNode.fCompl ^= 1;
-    }
-    return eNode;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Kit_GraphToTruth( Kit_Graph_t * pGraph )
-{
-    unsigned uTruths[5] = { 0xAAAAAAAA, 0xCCCCCCCC, 0xF0F0F0F0, 0xFF00FF00, 0xFFFF0000 };
-    unsigned uTruth, uTruth0, uTruth1;
-    Kit_Node_t * pNode;
-    int i;
-
-    // sanity checks
-    assert( Kit_GraphLeaveNum(pGraph) >= 0 );
-    assert( Kit_GraphLeaveNum(pGraph) <= pGraph->nSize );
-    assert( Kit_GraphLeaveNum(pGraph) <= 5 );
-
-    // check for constant function
-    if ( Kit_GraphIsConst(pGraph) )
-        return Kit_GraphIsComplement(pGraph)? 0 : ~((unsigned)0);
-    // check for a literal
-    if ( Kit_GraphIsVar(pGraph) )
-        return Kit_GraphIsComplement(pGraph)? ~uTruths[Kit_GraphVarInt(pGraph)] : uTruths[Kit_GraphVarInt(pGraph)];
-
-    // assign the elementary variables
-    Kit_GraphForEachLeaf( pGraph, pNode, i )
-        pNode->pFunc = (void *)uTruths[i];
-
-    // compute the function for each internal node
-    Kit_GraphForEachNode( pGraph, pNode, i )
-    {
-        uTruth0 = (unsigned)Kit_GraphNode(pGraph, pNode->eEdge0.Node)->pFunc;
-        uTruth1 = (unsigned)Kit_GraphNode(pGraph, pNode->eEdge1.Node)->pFunc;
-        uTruth0 = pNode->eEdge0.fCompl? ~uTruth0 : uTruth0;
-        uTruth1 = pNode->eEdge1.fCompl? ~uTruth1 : uTruth1;
-        uTruth = uTruth0 & uTruth1;
-        pNode->pFunc = (void *)uTruth;
-    }
-
-    // complement the result if necessary
-    return Kit_GraphIsComplement(pGraph)? ~uTruth : uTruth;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the factored form from the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Kit_Graph_t * Kit_TruthToGraph( unsigned * pTruth, int nVars, Vec_Int_t * vMemory )
-{
-    Kit_Graph_t * pGraph;
-    int RetValue;
-    // derive SOP
-    RetValue = Kit_TruthIsop( pTruth, nVars, vMemory, 1 ); // tried 1 and found not useful in "renode"
-    if ( RetValue == -1 )
-        return NULL;
-    if ( Vec_IntSize(vMemory) > 128 )
-        return NULL;
-//    printf( "Isop size = %d.\n", Vec_IntSize(vMemory) );
-    assert( RetValue == 0 || RetValue == 1 );
-    // derive factored form
-    pGraph = Kit_SopFactor( vMemory, RetValue, nVars, vMemory );
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the maximum depth from the leaf to the root.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_GraphLeafDepth_rec( Kit_Graph_t * pGraph, Kit_Node_t * pNode, Kit_Node_t * pLeaf )
-{
-    int Depth0, Depth1, Depth;
-    if ( pNode == pLeaf )
-        return 0;
-    if ( Kit_GraphNodeIsVar(pGraph, pNode) )
-        return -100;
-    Depth0 = Kit_GraphLeafDepth_rec( pGraph, Kit_GraphNodeFanin0(pGraph, pNode), pLeaf );
-    Depth1 = Kit_GraphLeafDepth_rec( pGraph, Kit_GraphNodeFanin1(pGraph, pNode), pLeaf );
-    Depth = KIT_MAX( Depth0, Depth1 );
-    Depth = (Depth == -100) ? -100 : Depth + 1;
-    return Depth;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/kit/kitHop.c b/src/aig/kit/kitHop.c
deleted file mode 100644
index f914fbab..00000000
--- a/src/aig/kit/kitHop.c
+++ /dev/null
@@ -1,144 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitHop.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [Procedures involving AIGs.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitHop.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-#include "hop.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Transforms the decomposition graph into the AIG.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Kit_GraphToHopInternal( Hop_Man_t * pMan, Kit_Graph_t * pGraph )
-{
-    Kit_Node_t * pNode;
-    Hop_Obj_t * pAnd0, * pAnd1;
-    int i;
-    // check for constant function
-    if ( Kit_GraphIsConst(pGraph) )
-        return Hop_NotCond( Hop_ManConst1(pMan), Kit_GraphIsComplement(pGraph) );
-    // check for a literal
-    if ( Kit_GraphIsVar(pGraph) )
-        return Hop_NotCond( Kit_GraphVar(pGraph)->pFunc, Kit_GraphIsComplement(pGraph) );
-    // build the AIG nodes corresponding to the AND gates of the graph
-    Kit_GraphForEachNode( pGraph, pNode, i )
-    {
-        pAnd0 = Hop_NotCond( Kit_GraphNode(pGraph, pNode->eEdge0.Node)->pFunc, pNode->eEdge0.fCompl ); 
-        pAnd1 = Hop_NotCond( Kit_GraphNode(pGraph, pNode->eEdge1.Node)->pFunc, pNode->eEdge1.fCompl ); 
-        pNode->pFunc = Hop_And( pMan, pAnd0, pAnd1 );
-    }
-    // complement the result if necessary
-    return Hop_NotCond( pNode->pFunc, Kit_GraphIsComplement(pGraph) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Strashes one logic node using its SOP.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Kit_GraphToHop( Hop_Man_t * pMan, Kit_Graph_t * pGraph )
-{
-    Kit_Node_t * pNode;
-    int i;
-    // collect the fanins
-    Kit_GraphForEachLeaf( pGraph, pNode, i )
-        pNode->pFunc = Hop_IthVar( pMan, i );
-    // perform strashing
-    return Kit_GraphToHopInternal( pMan, pGraph );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Strashed onen logic nodes using its truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Kit_TruthToHop( Hop_Man_t * pMan, unsigned * pTruth, int nVars, Vec_Int_t * vMemory )
-{
-    Hop_Obj_t * pObj;
-    Kit_Graph_t * pGraph;
-    // transform truth table into the decomposition tree
-    if ( vMemory == NULL )
-    {
-        vMemory = Vec_IntAlloc( 0 );
-        pGraph = Kit_TruthToGraph( pTruth, nVars, vMemory );
-        Vec_IntFree( vMemory );
-    }
-    else
-        pGraph = Kit_TruthToGraph( pTruth, nVars, vMemory );
-    // derive the AIG for the decomposition tree
-    pObj = Kit_GraphToHop( pMan, pGraph );
-    Kit_GraphFree( pGraph );
-    return pObj;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Strashes one logic node using its SOP.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Hop_Obj_t * Kit_CoverToHop( Hop_Man_t * pMan, Vec_Int_t * vCover, int nVars, Vec_Int_t * vMemory )
-{
-    Kit_Graph_t * pGraph;
-    Hop_Obj_t * pFunc;
-    // perform factoring
-    pGraph = Kit_SopFactor( vCover, 0, nVars, vMemory );
-    // convert graph to the AIG
-    pFunc = Kit_GraphToHop( pMan, pGraph );
-    Kit_GraphFree( pGraph );
-    return pFunc;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/kitIsop.c b/src/aig/kit/kitIsop.c
deleted file mode 100644
index 42fae2ea..00000000
--- a/src/aig/kit/kitIsop.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitIsop.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [ISOP computation based on Morreale's algorithm.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitIsop.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// ISOP computation fails if intermediate memory usage exceed this limit
-#define KIT_ISOP_MEM_LIMIT  (1<<16)
-
-// static procedures to compute ISOP
-static unsigned * Kit_TruthIsop_rec( unsigned * puOn, unsigned * puOnDc, int nVars, Kit_Sop_t * pcRes, Vec_Int_t * vStore );
-static unsigned   Kit_TruthIsop5_rec( unsigned uOn, unsigned uOnDc, int nVars, Kit_Sop_t * pcRes, Vec_Int_t * vStore );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Computes ISOP from TT.]
-
-  Description [Returns the cover in vMemory. Uses the rest of array in vMemory
-  as an intermediate memory storage. Returns the cover with -1 cubes, if the
-  the computation exceeded the memory limit (KIT_ISOP_MEM_LIMIT words of
-  intermediate data).]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_TruthIsop( unsigned * puTruth, int nVars, Vec_Int_t * vMemory, int fTryBoth )
-{
-    Kit_Sop_t cRes, * pcRes = &cRes;
-    Kit_Sop_t cRes2, * pcRes2 = &cRes2;
-    unsigned * pResult;
-    int RetValue = 0;
-    assert( nVars >= 0 && nVars < 16 );
-    // if nVars < 5, make sure it does not depend on those vars
-//    for ( i = nVars; i < 5; i++ )
-//        assert( !Kit_TruthVarInSupport(puTruth, 5, i) );
-    // prepare memory manager
-    Vec_IntClear( vMemory );
-    Vec_IntGrow( vMemory, KIT_ISOP_MEM_LIMIT );
-    // compute ISOP for the direct polarity
-    pResult = Kit_TruthIsop_rec( puTruth, puTruth, nVars, pcRes, vMemory );
-    if ( pcRes->nCubes == -1 )
-    {
-        vMemory->nSize = -1;
-        return -1;
-    }
-    assert( Kit_TruthIsEqual( puTruth, pResult, nVars ) );
-    if ( pcRes->nCubes == 0 || (pcRes->nCubes == 1 && pcRes->pCubes[0] == 0) )
-    {
-        vMemory->pArray[0] = 0;
-        Vec_IntShrink( vMemory, pcRes->nCubes );
-        return 0;
-    }
-    if ( fTryBoth )
-    {
-        // compute ISOP for the complemented polarity
-        Kit_TruthNot( puTruth, puTruth, nVars );
-        pResult = Kit_TruthIsop_rec( puTruth, puTruth, nVars, pcRes2, vMemory );
-        if ( pcRes2->nCubes >= 0 )
-        {
-            assert( Kit_TruthIsEqual( puTruth, pResult, nVars ) );
-            if ( pcRes->nCubes > pcRes2->nCubes )
-            {
-                RetValue = 1;
-                pcRes = pcRes2;
-            }
-        }
-        Kit_TruthNot( puTruth, puTruth, nVars );
-    }
-//    printf( "%d ", vMemory->nSize );
-    // move the cover representation to the beginning of the memory buffer
-    memmove( vMemory->pArray, pcRes->pCubes, pcRes->nCubes * sizeof(unsigned) );
-    Vec_IntShrink( vMemory, pcRes->nCubes );
-    return RetValue;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes ISOP 6 variables or more.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned * Kit_TruthIsop_rec( unsigned * puOn, unsigned * puOnDc, int nVars, Kit_Sop_t * pcRes, Vec_Int_t * vStore )
-{
-    Kit_Sop_t cRes0, cRes1, cRes2;
-    Kit_Sop_t * pcRes0 = &cRes0, * pcRes1 = &cRes1, * pcRes2 = &cRes2;
-    unsigned * puRes0, * puRes1, * puRes2;
-    unsigned * puOn0, * puOn1, * puOnDc0, * puOnDc1, * pTemp, * pTemp0, * pTemp1;
-    int i, k, Var, nWords, nWordsAll;
-//    assert( Kit_TruthIsImply( puOn, puOnDc, nVars ) );
-    // allocate room for the resulting truth table
-    nWordsAll = Kit_TruthWordNum( nVars );
-    pTemp = Vec_IntFetch( vStore, nWordsAll );
-    if ( pTemp == NULL )
-    {
-        pcRes->nCubes = -1;
-        return NULL;
-    }
-    // check for constants
-    if ( Kit_TruthIsConst0( puOn, nVars ) )
-    {
-        pcRes->nCubes = 0;
-        pcRes->pCubes = NULL;
-        Kit_TruthClear( pTemp, nVars );
-        return pTemp;
-    }
-    if ( Kit_TruthIsConst1( puOnDc, nVars ) )
-    {
-        pcRes->nCubes = 1;
-        pcRes->pCubes = Vec_IntFetch( vStore, 1 );
-        if ( pcRes->pCubes == NULL )
-        {
-            pcRes->nCubes = -1;
-            return NULL;
-        }
-        pcRes->pCubes[0] = 0;
-        Kit_TruthFill( pTemp, nVars );
-        return pTemp;
-    }
-    assert( nVars > 0 );
-    // find the topmost var
-    for ( Var = nVars-1; Var >= 0; Var-- )
-        if ( Kit_TruthVarInSupport( puOn, nVars, Var ) || 
-             Kit_TruthVarInSupport( puOnDc, nVars, Var ) )
-             break;
-    assert( Var >= 0 );
-    // consider a simple case when one-word computation can be used
-    if ( Var < 5 )
-    {
-        unsigned uRes = Kit_TruthIsop5_rec( puOn[0], puOnDc[0], Var+1, pcRes, vStore );
-        for ( i = 0; i < nWordsAll; i++ )
-            pTemp[i] = uRes;
-        return pTemp;
-    }
-    assert( Var >= 5 );
-    nWords = Kit_TruthWordNum( Var );
-    // cofactor
-    puOn0   = puOn;    puOn1   = puOn + nWords;
-    puOnDc0 = puOnDc;  puOnDc1 = puOnDc + nWords;
-    pTemp0  = pTemp;   pTemp1  = pTemp + nWords;
-    // solve for cofactors
-    Kit_TruthSharp( pTemp0, puOn0, puOnDc1, Var );
-    puRes0 = Kit_TruthIsop_rec( pTemp0, puOnDc0, Var, pcRes0, vStore );
-    if ( pcRes0->nCubes == -1 )
-    {
-        pcRes->nCubes = -1;
-        return NULL;
-    }
-    Kit_TruthSharp( pTemp1, puOn1, puOnDc0, Var );
-    puRes1 = Kit_TruthIsop_rec( pTemp1, puOnDc1, Var, pcRes1, vStore );
-    if ( pcRes1->nCubes == -1 )
-    {
-        pcRes->nCubes = -1;
-        return NULL;
-    }
-    Kit_TruthSharp( pTemp0, puOn0, puRes0, Var );
-    Kit_TruthSharp( pTemp1, puOn1, puRes1, Var );
-    Kit_TruthOr( pTemp0, pTemp0, pTemp1, Var );
-    Kit_TruthAnd( pTemp1, puOnDc0, puOnDc1, Var );
-    puRes2 = Kit_TruthIsop_rec( pTemp0, pTemp1, Var, pcRes2, vStore );
-    if ( pcRes2->nCubes == -1 )
-    {
-        pcRes->nCubes = -1;
-        return NULL;
-    }
-    // create the resulting cover
-    pcRes->nCubes = pcRes0->nCubes + pcRes1->nCubes + pcRes2->nCubes;
-    pcRes->pCubes = Vec_IntFetch( vStore, pcRes->nCubes );
-    if ( pcRes->pCubes == NULL )
-    {
-        pcRes->nCubes = -1;
-        return NULL;
-    }
-    k = 0;
-    for ( i = 0; i < pcRes0->nCubes; i++ )
-        pcRes->pCubes[k++] = pcRes0->pCubes[i] | (1 << ((Var<<1)+0));
-    for ( i = 0; i < pcRes1->nCubes; i++ )
-        pcRes->pCubes[k++] = pcRes1->pCubes[i] | (1 << ((Var<<1)+1));
-    for ( i = 0; i < pcRes2->nCubes; i++ )
-        pcRes->pCubes[k++] = pcRes2->pCubes[i];
-    assert( k == pcRes->nCubes );
-    // create the resulting truth table
-    Kit_TruthOr( pTemp0, puRes0, puRes2, Var );
-    Kit_TruthOr( pTemp1, puRes1, puRes2, Var );
-    // copy the table if needed
-    nWords <<= 1;
-    for ( i = 1; i < nWordsAll/nWords; i++ )
-        for ( k = 0; k < nWords; k++ )
-            pTemp[i*nWords + k] = pTemp[k];
-    // verify in the end
-//    assert( Kit_TruthIsImply( puOn, pTemp, nVars ) );
-//    assert( Kit_TruthIsImply( pTemp, puOnDc, nVars ) );
-    return pTemp;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes ISOP for 5 variables or less.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Kit_TruthIsop5_rec( unsigned uOn, unsigned uOnDc, int nVars, Kit_Sop_t * pcRes, Vec_Int_t * vStore )
-{
-    unsigned uMasks[5] = { 0xAAAAAAAA, 0xCCCCCCCC, 0xF0F0F0F0, 0xFF00FF00, 0xFFFF0000 };
-    Kit_Sop_t cRes0, cRes1, cRes2;
-    Kit_Sop_t * pcRes0 = &cRes0, * pcRes1 = &cRes1, * pcRes2 = &cRes2;
-    unsigned uOn0, uOn1, uOnDc0, uOnDc1, uRes0, uRes1, uRes2;
-    int i, k, Var;
-    assert( nVars <= 5 );
-    assert( (uOn & ~uOnDc) == 0 );
-    if ( uOn == 0 )
-    {
-        pcRes->nCubes = 0;
-        pcRes->pCubes = NULL;
-        return 0;
-    }
-    if ( uOnDc == 0xFFFFFFFF )
-    {
-        pcRes->nCubes = 1;
-        pcRes->pCubes = Vec_IntFetch( vStore, 1 );
-        if ( pcRes->pCubes == NULL )
-        {
-            pcRes->nCubes = -1;
-            return 0;
-        }
-        pcRes->pCubes[0] = 0;
-        return 0xFFFFFFFF;
-    }
-    assert( nVars > 0 );
-    // find the topmost var
-    for ( Var = nVars-1; Var >= 0; Var-- )
-        if ( Kit_TruthVarInSupport( &uOn, 5, Var ) || 
-             Kit_TruthVarInSupport( &uOnDc, 5, Var ) )
-             break;
-    assert( Var >= 0 );
-    // cofactor
-    uOn0   = uOn1   = uOn;
-    uOnDc0 = uOnDc1 = uOnDc;
-    Kit_TruthCofactor0( &uOn0, Var + 1, Var );
-    Kit_TruthCofactor1( &uOn1, Var + 1, Var );
-    Kit_TruthCofactor0( &uOnDc0, Var + 1, Var );
-    Kit_TruthCofactor1( &uOnDc1, Var + 1, Var );
-    // solve for cofactors
-    uRes0 = Kit_TruthIsop5_rec( uOn0 & ~uOnDc1, uOnDc0, Var, pcRes0, vStore );
-    if ( pcRes0->nCubes == -1 )
-    {
-        pcRes->nCubes = -1;
-        return 0;
-    }
-    uRes1 = Kit_TruthIsop5_rec( uOn1 & ~uOnDc0, uOnDc1, Var, pcRes1, vStore );
-    if ( pcRes1->nCubes == -1 )
-    {
-        pcRes->nCubes = -1;
-        return 0;
-    }
-    uRes2 = Kit_TruthIsop5_rec( (uOn0 & ~uRes0) | (uOn1 & ~uRes1), uOnDc0 & uOnDc1, Var, pcRes2, vStore );
-    if ( pcRes2->nCubes == -1 )
-    {
-        pcRes->nCubes = -1;
-        return 0;
-    }
-    // create the resulting cover
-    pcRes->nCubes = pcRes0->nCubes + pcRes1->nCubes + pcRes2->nCubes;
-    pcRes->pCubes = Vec_IntFetch( vStore, pcRes->nCubes );
-    if ( pcRes->pCubes == NULL )
-    {
-        pcRes->nCubes = -1;
-        return 0;
-    }
-    k = 0;
-    for ( i = 0; i < pcRes0->nCubes; i++ )
-        pcRes->pCubes[k++] = pcRes0->pCubes[i] | (1 << ((Var<<1)+0));
-    for ( i = 0; i < pcRes1->nCubes; i++ )
-        pcRes->pCubes[k++] = pcRes1->pCubes[i] | (1 << ((Var<<1)+1));
-    for ( i = 0; i < pcRes2->nCubes; i++ )
-        pcRes->pCubes[k++] = pcRes2->pCubes[i];
-    assert( k == pcRes->nCubes );
-    // derive the final truth table
-    uRes2 |= (uRes0 & ~uMasks[Var]) | (uRes1 & uMasks[Var]);
-//    assert( (uOn & ~uRes2) == 0 );
-//    assert( (uRes2 & ~uOnDc) == 0 );
-    return uRes2;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/kitSop.c b/src/aig/kit/kitSop.c
deleted file mode 100644
index 3fa81351..00000000
--- a/src/aig/kit/kitSop.c
+++ /dev/null
@@ -1,570 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitSop.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [Procedures involving SOPs.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitSop.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Creates SOP from the cube array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopCreate( Kit_Sop_t * cResult, Vec_Int_t * vInput, int nVars, Vec_Int_t * vMemory )
-{
-    unsigned uCube;
-    int i;
-    // start the cover
-    cResult->nCubes = 0;
-    cResult->pCubes = Vec_IntFetch( vMemory, Vec_IntSize(vInput) );
-    // add the cubes
-    Vec_IntForEachEntry( vInput, uCube, i )
-        Kit_SopPushCube( cResult, uCube );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates SOP from the cube array.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopCreateInverse( Kit_Sop_t * cResult, Vec_Int_t * vInput, int nLits, Vec_Int_t * vMemory )
-{
-    unsigned uCube, uMask = 0;
-    int i, nCubes = Vec_IntSize(vInput);
-    // start the cover
-    cResult->nCubes = 0;
-    cResult->pCubes = Vec_IntFetch( vMemory, nCubes );
-    // add the cubes
-//    Vec_IntForEachEntry( vInput, uCube, i )
-    for ( i = 0; i < nCubes; i++ )
-    {
-        uCube = Vec_IntEntry( vInput, i );
-        uMask = ((uCube | (uCube >> 1)) & 0x55555555);
-        uMask |= (uMask << 1);
-        Kit_SopPushCube( cResult, uCube ^ uMask );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Duplicates SOP.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopDup( Kit_Sop_t * cResult, Kit_Sop_t * cSop, Vec_Int_t * vMemory )
-{
-    unsigned uCube;
-    int i;
-    // start the cover
-    cResult->nCubes = 0;
-    cResult->pCubes = Vec_IntFetch( vMemory, Kit_SopCubeNum(cSop) );
-    // add the cubes
-    Kit_SopForEachCube( cSop, uCube, i )
-        Kit_SopPushCube( cResult, uCube );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Derives the quotient of division by literal.]
-
-  Description [Reduces the cover to be equal to the result of
-  division of the given cover by the literal.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopDivideByLiteralQuo( Kit_Sop_t * cSop, int iLit )
-{
-    unsigned uCube;
-    int i, k = 0;
-    Kit_SopForEachCube( cSop, uCube, i )
-    {
-        if ( Kit_CubeHasLit(uCube, iLit) )
-            Kit_SopWriteCube( cSop, Kit_CubeRemLit(uCube, iLit), k++ );
-    }
-    Kit_SopShrink( cSop, k );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Divides cover by one cube.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopDivideByCube( Kit_Sop_t * cSop, Kit_Sop_t * cDiv, Kit_Sop_t * vQuo, Kit_Sop_t * vRem, Vec_Int_t * vMemory )
-{
-    unsigned uCube, uDiv;
-    int i;
-    // get the only cube
-    assert( Kit_SopCubeNum(cDiv) == 1 );
-    uDiv = Kit_SopCube(cDiv, 0);
-    // allocate covers
-    vQuo->nCubes = 0;
-    vQuo->pCubes = Vec_IntFetch( vMemory, Kit_SopCubeNum(cSop) );
-    vRem->nCubes = 0;
-    vRem->pCubes = Vec_IntFetch( vMemory, Kit_SopCubeNum(cSop) );
-    // sort the cubes
-    Kit_SopForEachCube( cSop, uCube, i )
-    {
-        if ( Kit_CubeContains( uCube, uDiv ) )
-            Kit_SopPushCube( vQuo, Kit_CubeSharp(uCube, uDiv) );
-        else
-            Kit_SopPushCube( vRem, uCube );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Divides cover by one cube.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopDivideInternal( Kit_Sop_t * cSop, Kit_Sop_t * cDiv, Kit_Sop_t * vQuo, Kit_Sop_t * vRem, Vec_Int_t * vMemory )
-{
-    unsigned uCube, uDiv, uCube2, uDiv2, uQuo;
-    int i, i2, k, k2, nCubesRem;
-    assert( Kit_SopCubeNum(cSop) >= Kit_SopCubeNum(cDiv) );
-    // consider special case
-    if ( Kit_SopCubeNum(cDiv) == 1 )
-    {
-        Kit_SopDivideByCube( cSop, cDiv, vQuo, vRem, vMemory );
-        return;
-    }
-    // allocate quotient
-    vQuo->nCubes = 0;
-    vQuo->pCubes = Vec_IntFetch( vMemory, Kit_SopCubeNum(cSop) / Kit_SopCubeNum(cDiv) );
-    // for each cube of the cover
-    // it either belongs to the quotient or to the remainder
-    Kit_SopForEachCube( cSop, uCube, i )
-    {
-        // skip taken cubes
-        if ( Kit_CubeIsMarked(uCube) )
-            continue;
-        // find a matching cube in the divisor
-        Kit_SopForEachCube( cDiv, uDiv, k )
-            if ( Kit_CubeContains( uCube, uDiv ) )
-                break;
-        // the cube is not found 
-        if ( k == Kit_SopCubeNum(cDiv) )
-            continue;
-        // the quotient cube exists
-        uQuo = Kit_CubeSharp( uCube, uDiv );
-        // find corresponding cubes for other cubes of the divisor
-        Kit_SopForEachCube( cDiv, uDiv2, k2 )
-        {
-            if ( k2 == k )
-                continue;
-            // find a matching cube
-            Kit_SopForEachCube( cSop, uCube2, i2 )
-            {
-                // skip taken cubes
-                if ( Kit_CubeIsMarked(uCube2) )
-                    continue;
-                // check if the cube can be used
-                if ( Kit_CubeContains( uCube2, uDiv2 ) && uQuo == Kit_CubeSharp( uCube2, uDiv2 ) )
-                    break;
-            }
-            // the case when the cube is not found
-            if ( i2 == Kit_SopCubeNum(cSop) )
-                break;
-        }
-        // we did not find some cubes - continue looking at other cubes
-        if ( k2 != Kit_SopCubeNum(cDiv) )
-            continue;
-        // we found all cubes - add the quotient cube
-        Kit_SopPushCube( vQuo, uQuo );
-
-        // mark the first cube
-        Kit_SopWriteCube( cSop, Kit_CubeMark(uCube), i );
-        // mark other cubes that have this quotient
-        Kit_SopForEachCube( cDiv, uDiv2, k2 )
-        {
-            if ( k2 == k )
-                continue;
-            // find a matching cube
-            Kit_SopForEachCube( cSop, uCube2, i2 )
-            {
-                // skip taken cubes
-                if ( Kit_CubeIsMarked(uCube2) )
-                    continue;
-                // check if the cube can be used
-                if ( Kit_CubeContains( uCube2, uDiv2 ) && uQuo == Kit_CubeSharp( uCube2, uDiv2 ) )
-                    break;
-            }
-            assert( i2 < Kit_SopCubeNum(cSop) );
-            // the cube is found, mark it 
-            // (later we will add all unmarked cubes to the remainder)
-            Kit_SopWriteCube( cSop, Kit_CubeMark(uCube2), i2 );
-        }
-    }
-    // determine the number of cubes in the remainder
-    nCubesRem = Kit_SopCubeNum(cSop) - Kit_SopCubeNum(vQuo) * Kit_SopCubeNum(cDiv);
-    // allocate remainder
-    vRem->nCubes = 0;
-    vRem->pCubes = Vec_IntFetch( vMemory, nCubesRem );
-    // finally add the remaining unmarked cubes to the remainder 
-    // and clean the marked cubes in the cover
-    Kit_SopForEachCube( cSop, uCube, i )
-    {
-        if ( !Kit_CubeIsMarked(uCube) )
-        {
-            Kit_SopPushCube( vRem, uCube );
-            continue;
-        }
-        Kit_SopWriteCube( cSop, Kit_CubeUnmark(uCube), i );
-    }
-    assert( nCubesRem == Kit_SopCubeNum(vRem) );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the common cube.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-static inline unsigned Kit_SopCommonCube( Kit_Sop_t * cSop )
-{
-    unsigned uMask, uCube;
-    int i;
-    uMask = ~(unsigned)0;
-    Kit_SopForEachCube( cSop, uCube, i )
-        uMask &= uCube;
-    return uMask;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Makes the cover cube-free.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopMakeCubeFree( Kit_Sop_t * cSop )
-{
-    unsigned uMask, uCube;
-    int i;
-    uMask = Kit_SopCommonCube( cSop );
-    if ( uMask == 0 )
-        return;
-    // remove the common cube
-    Kit_SopForEachCube( cSop, uCube, i )
-        Kit_SopWriteCube( cSop, Kit_CubeSharp(uCube, uMask), i );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks if the cover is cube-free.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_SopIsCubeFree( Kit_Sop_t * cSop )
-{
-    return Kit_SopCommonCube( cSop ) == 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates SOP composes of the common cube of the given SOP.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopCommonCubeCover( Kit_Sop_t * cResult, Kit_Sop_t * cSop, Vec_Int_t * vMemory )
-{
-    assert( Kit_SopCubeNum(cSop) > 0 );
-    cResult->nCubes = 0;
-    cResult->pCubes = Vec_IntFetch( vMemory, 1 );
-    Kit_SopPushCube( cResult, Kit_SopCommonCube(cSop) );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Find any literal that occurs more than once.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_SopAnyLiteral( Kit_Sop_t * cSop, int nLits )
-{
-    unsigned uCube;
-    int i, k, nLitsCur;
-    // go through each literal
-    for ( i = 0; i < nLits; i++ )
-    {
-        // go through all the cubes
-        nLitsCur = 0;
-        Kit_SopForEachCube( cSop, uCube, k )
-            if ( Kit_CubeHasLit(uCube, i) )
-                nLitsCur++;
-        if ( nLitsCur > 1 )
-            return i;
-    }
-    return -1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Find the least often occurring literal.]
-
-  Description [Find the least often occurring literal among those
-  that occur more than once.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_SopWorstLiteral( Kit_Sop_t * cSop, int nLits )
-{
-    unsigned uCube;
-    int i, k, iMin, nLitsMin, nLitsCur;
-    int fUseFirst = 1;
-
-    // go through each literal
-    iMin = -1;
-    nLitsMin = 1000000;
-    for ( i = 0; i < nLits; i++ )
-    {
-        // go through all the cubes
-        nLitsCur = 0;
-        Kit_SopForEachCube( cSop, uCube, k )
-            if ( Kit_CubeHasLit(uCube, i) )
-                nLitsCur++;
-        // skip the literal that does not occur or occurs once
-        if ( nLitsCur < 2 )
-            continue;
-        // check if this is the best literal
-        if ( fUseFirst )
-        {
-            if ( nLitsMin > nLitsCur )
-            {
-                nLitsMin = nLitsCur;
-                iMin = i;
-            }
-        }
-        else
-        {
-            if ( nLitsMin >= nLitsCur )
-            {
-                nLitsMin = nLitsCur;
-                iMin = i;
-            }
-        }
-    }
-    if ( nLitsMin < 1000000 )
-        return iMin;
-    return -1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Find the least often occurring literal.]
-
-  Description [Find the least often occurring literal among those
-  that occur more than once.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_SopBestLiteral( Kit_Sop_t * cSop, int nLits, unsigned uMask )
-{
-    unsigned uCube;
-    int i, k, iMax, nLitsMax, nLitsCur;
-    int fUseFirst = 1;
-
-    // go through each literal
-    iMax = -1;
-    nLitsMax = -1;
-    for ( i = 0; i < nLits; i++ )
-    {
-        if ( !Kit_CubeHasLit(uMask, i) )
-            continue;
-        // go through all the cubes
-        nLitsCur = 0;
-        Kit_SopForEachCube( cSop, uCube, k )
-            if ( Kit_CubeHasLit(uCube, i) )
-                nLitsCur++;
-        // skip the literal that does not occur or occurs once
-        if ( nLitsCur < 2 )
-            continue;
-        // check if this is the best literal
-        if ( fUseFirst )
-        {
-            if ( nLitsMax < nLitsCur )
-            {
-                nLitsMax = nLitsCur;
-                iMax = i;
-            }
-        }
-        else
-        {
-            if ( nLitsMax <= nLitsCur )
-            {
-                nLitsMax = nLitsCur;
-                iMax = i;
-            }
-        }
-    }
-    if ( nLitsMax >= 0 )
-        return iMax;
-    return -1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes a level-zero kernel.]
-
-  Description [Modifies the cover to contain one level-zero kernel.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopDivisorZeroKernel_rec( Kit_Sop_t * cSop, int nLits )
-{
-    int iLit;
-    // find any literal that occurs at least two times
-    iLit = Kit_SopWorstLiteral( cSop, nLits );
-    if ( iLit == -1 )
-        return;
-    // derive the cube-free quotient
-    Kit_SopDivideByLiteralQuo( cSop, iLit ); // the same cover
-    Kit_SopMakeCubeFree( cSop );             // the same cover
-    // call recursively
-    Kit_SopDivisorZeroKernel_rec( cSop, nLits );    // the same cover
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes the quick divisor of the cover.]
-
-  Description [Returns 0, if there is no divisor other than trivial.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_SopDivisor( Kit_Sop_t * cResult, Kit_Sop_t * cSop, int nLits, Vec_Int_t * vMemory )
-{
-    if ( Kit_SopCubeNum(cSop) <= 1 )
-        return 0;
-    if ( Kit_SopAnyLiteral( cSop, nLits ) == -1 )
-        return 0;
-    // duplicate the cover
-    Kit_SopDup( cResult, cSop, vMemory );
-    // perform the kerneling
-    Kit_SopDivisorZeroKernel_rec( cResult, nLits );
-    assert( Kit_SopCubeNum(cResult) > 0 );
-    return 1;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Create the one-literal cover with the best literal from cSop.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_SopBestLiteralCover( Kit_Sop_t * cResult, Kit_Sop_t * cSop, unsigned uCube, int nLits, Vec_Int_t * vMemory )
-{
-    int iLitBest;
-    // get the best literal
-    iLitBest = Kit_SopBestLiteral( cSop, nLits, uCube );
-    // start the cover
-    cResult->nCubes = 0;
-    cResult->pCubes = Vec_IntFetch( vMemory, 1 );
-    // set the cube
-    Kit_SopPushCube( cResult, Kit_CubeSetLit(0, iLitBest) );
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/kitTruth.c b/src/aig/kit/kitTruth.c
deleted file mode 100644
index 5360ad7f..00000000
--- a/src/aig/kit/kitTruth.c
+++ /dev/null
@@ -1,1729 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kitTruth.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    [Procedures involving truth tables.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kitTruth.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static unsigned s_VarMasks[5][2] = {
-    { 0x33333333, 0xAAAAAAAA },
-    { 0x55555555, 0xCCCCCCCC },
-    { 0x0F0F0F0F, 0xF0F0F0F0 },
-    { 0x00FF00FF, 0xFF00FF00 },
-    { 0x0000FFFF, 0xFFFF0000 }
-};
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Swaps two adjacent variables in the truth table.]
-
-  Description [Swaps var number Start and var number Start+1 (0-based numbers).
-  The input truth table is pIn. The output truth table is pOut.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthSwapAdjacentVars( unsigned * pOut, unsigned * pIn, int nVars, int iVar )
-{
-    static unsigned PMasks[4][3] = {
-        { 0x99999999, 0x22222222, 0x44444444 },
-        { 0xC3C3C3C3, 0x0C0C0C0C, 0x30303030 },
-        { 0xF00FF00F, 0x00F000F0, 0x0F000F00 },
-        { 0xFF0000FF, 0x0000FF00, 0x00FF0000 }
-    };
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step, Shift;
-
-    assert( iVar < nVars - 1 );
-    if ( iVar < 4 )
-    {
-        Shift = (1 << iVar);
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & PMasks[iVar][0]) | ((pIn[i] & PMasks[iVar][1]) << Shift) | ((pIn[i] & PMasks[iVar][2]) >> Shift);
-    }
-    else if ( iVar > 4 )
-    {
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 4*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-                pOut[i] = pIn[i];
-            for ( i = 0; i < Step; i++ )
-                pOut[Step+i] = pIn[2*Step+i];
-            for ( i = 0; i < Step; i++ )
-                pOut[2*Step+i] = pIn[Step+i];
-            for ( i = 0; i < Step; i++ )
-                pOut[3*Step+i] = pIn[3*Step+i];
-            pIn  += 4*Step;
-            pOut += 4*Step;
-        }
-    }
-    else // if ( iVar == 4 )
-    {
-        for ( i = 0; i < nWords; i += 2 )
-        {
-            pOut[i]   = (pIn[i]   & 0x0000FFFF) | ((pIn[i+1] & 0x0000FFFF) << 16);
-            pOut[i+1] = (pIn[i+1] & 0xFFFF0000) | ((pIn[i]   & 0xFFFF0000) >> 16);
-        }
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Swaps two adjacent variables in the truth table.]
-
-  Description [Swaps var number Start and var number Start+1 (0-based numbers).
-  The input truth table is pIn. The output truth table is pOut.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthSwapAdjacentVars2( unsigned * pIn, unsigned * pOut, int nVars, int Start )
-{
-    int nWords = (nVars <= 5)? 1 : (1 << (nVars-5));
-    int i, k, Step;
-
-    assert( Start < nVars - 1 );
-    switch ( Start )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0x99999999) | ((pIn[i] & 0x22222222) << 1) | ((pIn[i] & 0x44444444) >> 1);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0xC3C3C3C3) | ((pIn[i] & 0x0C0C0C0C) << 2) | ((pIn[i] & 0x30303030) >> 2);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0xF00FF00F) | ((pIn[i] & 0x00F000F0) << 4) | ((pIn[i] & 0x0F000F00) >> 4);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0xFF0000FF) | ((pIn[i] & 0x0000FF00) << 8) | ((pIn[i] & 0x00FF0000) >> 8);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i += 2 )
-        {
-            pOut[i]   = (pIn[i]   & 0x0000FFFF) | ((pIn[i+1] & 0x0000FFFF) << 16);
-            pOut[i+1] = (pIn[i+1] & 0xFFFF0000) | ((pIn[i]   & 0xFFFF0000) >> 16);
-        }
-        return;
-    default:
-        Step = (1 << (Start - 5));
-        for ( k = 0; k < nWords; k += 4*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-                pOut[i] = pIn[i];
-            for ( i = 0; i < Step; i++ )
-                pOut[Step+i] = pIn[2*Step+i];
-            for ( i = 0; i < Step; i++ )
-                pOut[2*Step+i] = pIn[Step+i];
-            for ( i = 0; i < Step; i++ )
-                pOut[3*Step+i] = pIn[3*Step+i];
-            pIn  += 4*Step;
-            pOut += 4*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Expands the truth table according to the phase.]
-
-  Description [The input and output truth tables are in pIn/pOut. The current number
-  of variables is nVars. The total number of variables in nVarsAll. The last argument
-  (Phase) contains shows where the variables should go.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthStretch( unsigned * pOut, unsigned * pIn, int nVars, int nVarsAll, unsigned Phase, int fReturnIn )
-{
-    unsigned * pTemp;
-    int i, k, Var = nVars - 1, Counter = 0;
-    for ( i = nVarsAll - 1; i >= 0; i-- )
-        if ( Phase & (1 << i) )
-        {
-            for ( k = Var; k < i; k++ )
-            {
-                Kit_TruthSwapAdjacentVars( pOut, pIn, nVarsAll, k );
-                pTemp = pIn; pIn = pOut; pOut = pTemp;
-                Counter++;
-            }
-            Var--;
-        }
-    assert( Var == -1 );
-    // swap if it was moved an even number of times
-    if ( fReturnIn ^ !(Counter & 1) )
-        Kit_TruthCopy( pOut, pIn, nVarsAll );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Shrinks the truth table according to the phase.]
-
-  Description [The input and output truth tables are in pIn/pOut. The current number
-  of variables is nVars. The total number of variables in nVarsAll. The last argument
-  (Phase) contains shows what variables should remain.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthShrink( unsigned * pOut, unsigned * pIn, int nVars, int nVarsAll, unsigned Phase, int fReturnIn )
-{
-    unsigned * pTemp;
-    int i, k, Var = 0, Counter = 0;
-    for ( i = 0; i < nVarsAll; i++ )
-        if ( Phase & (1 << i) )
-        {
-            for ( k = i-1; k >= Var; k-- )
-            {
-                Kit_TruthSwapAdjacentVars( pOut, pIn, nVarsAll, k );
-                pTemp = pIn; pIn = pOut; pOut = pTemp;
-                Counter++;
-            }
-            Var++;
-        }
-    assert( Var == nVars );
-    // swap if it was moved an even number of times
-    if ( fReturnIn ^ !(Counter & 1) )
-        Kit_TruthCopy( pOut, pIn, nVarsAll );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Returns 1 if TT depends on the given variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_TruthVarInSupport( unsigned * pTruth, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            if ( (pTruth[i] & 0x55555555) != ((pTruth[i] & 0xAAAAAAAA) >> 1) )
-                return 1;
-        return 0;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            if ( (pTruth[i] & 0x33333333) != ((pTruth[i] & 0xCCCCCCCC) >> 2) )
-                return 1;
-        return 0;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            if ( (pTruth[i] & 0x0F0F0F0F) != ((pTruth[i] & 0xF0F0F0F0) >> 4) )
-                return 1;
-        return 0;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            if ( (pTruth[i] & 0x00FF00FF) != ((pTruth[i] & 0xFF00FF00) >> 8) )
-                return 1;
-        return 0;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            if ( (pTruth[i] & 0x0000FFFF) != ((pTruth[i] & 0xFFFF0000) >> 16) )
-                return 1;
-        return 0;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-                if ( pTruth[i] != pTruth[Step+i] )
-                    return 1;
-            pTruth += 2*Step;
-        }
-        return 0;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns the number of support vars.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_TruthSupportSize( unsigned * pTruth, int nVars )
-{
-    int i, Counter = 0;
-    for ( i = 0; i < nVars; i++ )
-        Counter += Kit_TruthVarInSupport( pTruth, nVars, i );
-    return Counter;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Returns support of the function.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Kit_TruthSupport( unsigned * pTruth, int nVars )
-{
-    int i, Support = 0;
-    for ( i = 0; i < nVars; i++ )
-        if ( Kit_TruthVarInSupport( pTruth, nVars, i ) )
-            Support |= (1 << i);
-    return Support;
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Computes negative cofactor of the function.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthCofactor0( unsigned * pTruth, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0x55555555) | ((pTruth[i] & 0x55555555) << 1);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0x33333333) | ((pTruth[i] & 0x33333333) << 2);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0x0F0F0F0F) | ((pTruth[i] & 0x0F0F0F0F) << 4);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0x00FF00FF) | ((pTruth[i] & 0x00FF00FF) << 8);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0x0000FFFF) | ((pTruth[i] & 0x0000FFFF) << 16);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-                pTruth[Step+i] = pTruth[i];
-            pTruth += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes positive cofactor of the function.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthCofactor1( unsigned * pTruth, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0xAAAAAAAA) | ((pTruth[i] & 0xAAAAAAAA) >> 1);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0xCCCCCCCC) | ((pTruth[i] & 0xCCCCCCCC) >> 2);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0xF0F0F0F0) | ((pTruth[i] & 0xF0F0F0F0) >> 4);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0xFF00FF00) | ((pTruth[i] & 0xFF00FF00) >> 8);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = (pTruth[i] & 0xFFFF0000) | ((pTruth[i] & 0xFFFF0000) >> 16);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-                pTruth[i] = pTruth[Step+i];
-            pTruth += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes positive cofactor of the function.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthCofactor0New( unsigned * pOut, unsigned * pIn, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0x55555555) | ((pIn[i] & 0x55555555) << 1);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0x33333333) | ((pIn[i] & 0x33333333) << 2);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0x0F0F0F0F) | ((pIn[i] & 0x0F0F0F0F) << 4);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0x00FF00FF) | ((pIn[i] & 0x00FF00FF) << 8);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0x0000FFFF) | ((pIn[i] & 0x0000FFFF) << 16);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-                pOut[i] = pOut[Step+i] = pIn[i];
-            pIn += 2*Step;
-            pOut += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes positive cofactor of the function.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthCofactor1New( unsigned * pOut, unsigned * pIn, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0xAAAAAAAA) | ((pIn[i] & 0xAAAAAAAA) >> 1);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0xCCCCCCCC) | ((pIn[i] & 0xCCCCCCCC) >> 2);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0xF0F0F0F0) | ((pIn[i] & 0xF0F0F0F0) >> 4);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0xFF00FF00) | ((pIn[i] & 0xFF00FF00) >> 8);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pIn[i] & 0xFFFF0000) | ((pIn[i] & 0xFFFF0000) >> 16);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-                pOut[i] = pOut[Step+i] = pIn[Step+i];
-            pIn += 2*Step;
-            pOut += 2*Step;
-        }
-        return;
-    }
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Existentially quantifies the variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthExist( unsigned * pTruth, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] |=  ((pTruth[i] & 0xAAAAAAAA) >> 1) | ((pTruth[i] & 0x55555555) << 1);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] |=  ((pTruth[i] & 0xCCCCCCCC) >> 2) | ((pTruth[i] & 0x33333333) << 2);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] |=  ((pTruth[i] & 0xF0F0F0F0) >> 4) | ((pTruth[i] & 0x0F0F0F0F) << 4);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] |=  ((pTruth[i] & 0xFF00FF00) >> 8) | ((pTruth[i] & 0x00FF00FF) << 8);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] |=  ((pTruth[i] & 0xFFFF0000) >> 16) | ((pTruth[i] & 0x0000FFFF) << 16);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-            {
-                pTruth[i]     |= pTruth[Step+i];
-                pTruth[Step+i] = pTruth[i];
-            }
-            pTruth += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Existentially quantifies the variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthExistNew( unsigned * pRes, unsigned * pTruth, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] | ((pTruth[i] & 0xAAAAAAAA) >> 1) | ((pTruth[i] & 0x55555555) << 1);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] | ((pTruth[i] & 0xCCCCCCCC) >> 2) | ((pTruth[i] & 0x33333333) << 2);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] | ((pTruth[i] & 0xF0F0F0F0) >> 4) | ((pTruth[i] & 0x0F0F0F0F) << 4);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] | ((pTruth[i] & 0xFF00FF00) >> 8) | ((pTruth[i] & 0x00FF00FF) << 8);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] | ((pTruth[i] & 0xFFFF0000) >> 16) | ((pTruth[i] & 0x0000FFFF) << 16);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-            {
-                pRes[i]      = pTruth[i] | pTruth[Step+i];
-                pRes[Step+i] = pRes[i];
-            }
-            pRes += 2*Step;
-            pTruth += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Existantially quantifies the set of variables.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthExistSet( unsigned * pRes, unsigned * pTruth, int nVars, unsigned uMask )
-{
-    int v;
-    Kit_TruthCopy( pRes, pTruth, nVars );
-    for ( v = 0; v < nVars; v++ )
-        if ( uMask & (1 << v) )
-            Kit_TruthExist( pRes, nVars, v );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Unversally quantifies the variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthForall( unsigned * pTruth, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] &=  ((pTruth[i] & 0xAAAAAAAA) >> 1) | ((pTruth[i] & 0x55555555) << 1);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] &=  ((pTruth[i] & 0xCCCCCCCC) >> 2) | ((pTruth[i] & 0x33333333) << 2);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] &=  ((pTruth[i] & 0xF0F0F0F0) >> 4) | ((pTruth[i] & 0x0F0F0F0F) << 4);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] &=  ((pTruth[i] & 0xFF00FF00) >> 8) | ((pTruth[i] & 0x00FF00FF) << 8);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] &=  ((pTruth[i] & 0xFFFF0000) >> 16) | ((pTruth[i] & 0x0000FFFF) << 16);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-            {
-                pTruth[i]     &= pTruth[Step+i];
-                pTruth[Step+i] = pTruth[i];
-            }
-            pTruth += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Universally quantifies the variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthForallNew( unsigned * pRes, unsigned * pTruth, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] & (((pTruth[i] & 0xAAAAAAAA) >> 1) | ((pTruth[i] & 0x55555555) << 1));
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] & (((pTruth[i] & 0xCCCCCCCC) >> 2) | ((pTruth[i] & 0x33333333) << 2));
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] & (((pTruth[i] & 0xF0F0F0F0) >> 4) | ((pTruth[i] & 0x0F0F0F0F) << 4));
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] & (((pTruth[i] & 0xFF00FF00) >> 8) | ((pTruth[i] & 0x00FF00FF) << 8));
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] & (((pTruth[i] & 0xFFFF0000) >> 16) | ((pTruth[i] & 0x0000FFFF) << 16));
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-            {
-                pRes[i]      = pTruth[i] & pTruth[Step+i];
-                pRes[Step+i] = pRes[i];
-            }
-            pRes += 2*Step;
-            pTruth += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Universally quantifies the variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthUniqueNew( unsigned * pRes, unsigned * pTruth, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] ^ (((pTruth[i] & 0xAAAAAAAA) >> 1) | ((pTruth[i] & 0x55555555) << 1));
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] ^ (((pTruth[i] & 0xCCCCCCCC) >> 2) | ((pTruth[i] & 0x33333333) << 2));
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] ^ (((pTruth[i] & 0xF0F0F0F0) >> 4) | ((pTruth[i] & 0x0F0F0F0F) << 4));
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] ^ (((pTruth[i] & 0xFF00FF00) >> 8) | ((pTruth[i] & 0x00FF00FF) << 8));
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pRes[i] =  pTruth[i] ^ (((pTruth[i] & 0xFFFF0000) >> 16) | ((pTruth[i] & 0x0000FFFF) << 16));
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-            {
-                pRes[i]      = pTruth[i] ^ pTruth[Step+i];
-                pRes[Step+i] = pRes[i];
-            }
-            pRes += 2*Step;
-            pTruth += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Universally quantifies the set of variables.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthForallSet( unsigned * pRes, unsigned * pTruth, int nVars, unsigned uMask )
-{
-    int v;
-    Kit_TruthCopy( pRes, pTruth, nVars );
-    for ( v = 0; v < nVars; v++ )
-        if ( uMask & (1 << v) )
-            Kit_TruthForall( pRes, nVars, v );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Multiplexes two functions with the given variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthMuxVar( unsigned * pOut, unsigned * pCof0, unsigned * pCof1, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pCof0[i] & 0x55555555) | (pCof1[i] & 0xAAAAAAAA);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pCof0[i] & 0x33333333) | (pCof1[i] & 0xCCCCCCCC);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pCof0[i] & 0x0F0F0F0F) | (pCof1[i] & 0xF0F0F0F0);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pCof0[i] & 0x00FF00FF) | (pCof1[i] & 0xFF00FF00);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (pCof0[i] & 0x0000FFFF) | (pCof1[i] & 0xFFFF0000);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-            {
-                pOut[i]      = pCof0[i];
-                pOut[Step+i] = pCof1[Step+i];
-            }
-            pOut += 2*Step;
-            pCof0 += 2*Step;
-            pCof1 += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Multiplexes two functions with the given variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthMuxVarPhase( unsigned * pOut, unsigned * pCof0, unsigned * pCof1, int nVars, int iVar, int fCompl0 )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-
-    if ( fCompl0 == 0 )
-    {
-        Kit_TruthMuxVar( pOut, pCof0, pCof1, nVars, iVar );
-        return;
-    }
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (~pCof0[i] & 0x55555555) | (pCof1[i] & 0xAAAAAAAA);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (~pCof0[i] & 0x33333333) | (pCof1[i] & 0xCCCCCCCC);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (~pCof0[i] & 0x0F0F0F0F) | (pCof1[i] & 0xF0F0F0F0);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (~pCof0[i] & 0x00FF00FF) | (pCof1[i] & 0xFF00FF00);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pOut[i] = (~pCof0[i] & 0x0000FFFF) | (pCof1[i] & 0xFFFF0000);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-            {
-                pOut[i]      = ~pCof0[i];
-                pOut[Step+i] = pCof1[Step+i];
-            }
-            pOut += 2*Step;
-            pCof0 += 2*Step;
-            pCof1 += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks symmetry of two variables.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_TruthVarsSymm( unsigned * pTruth, int nVars, int iVar0, int iVar1 )
-{
-    static unsigned uTemp0[16], uTemp1[16];
-    assert( nVars <= 9 );
-    // compute Cof01
-    Kit_TruthCopy( uTemp0, pTruth, nVars );
-    Kit_TruthCofactor0( uTemp0, nVars, iVar0 );
-    Kit_TruthCofactor1( uTemp0, nVars, iVar1 );
-    // compute Cof10
-    Kit_TruthCopy( uTemp1, pTruth, nVars );
-    Kit_TruthCofactor1( uTemp1, nVars, iVar0 );
-    Kit_TruthCofactor0( uTemp1, nVars, iVar1 );
-    // compare
-    return Kit_TruthIsEqual( uTemp0, uTemp1, nVars );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Checks antisymmetry of two variables.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_TruthVarsAntiSymm( unsigned * pTruth, int nVars, int iVar0, int iVar1 )
-{
-    static unsigned uTemp0[16], uTemp1[16];
-    assert( nVars <= 9 );
-    // compute Cof00
-    Kit_TruthCopy( uTemp0, pTruth, nVars );
-    Kit_TruthCofactor0( uTemp0, nVars, iVar0 );
-    Kit_TruthCofactor0( uTemp0, nVars, iVar1 );
-    // compute Cof11
-    Kit_TruthCopy( uTemp1, pTruth, nVars );
-    Kit_TruthCofactor1( uTemp1, nVars, iVar0 );
-    Kit_TruthCofactor1( uTemp1, nVars, iVar1 );
-    // compare
-    return Kit_TruthIsEqual( uTemp0, uTemp1, nVars );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Changes phase of the function w.r.t. one variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthChangePhase( unsigned * pTruth, int nVars, int iVar )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Step;
-    unsigned Temp;
-
-    assert( iVar < nVars );
-    switch ( iVar )
-    {
-    case 0:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ((pTruth[i] & 0x55555555) << 1) | ((pTruth[i] & 0xAAAAAAAA) >> 1);
-        return;
-    case 1:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ((pTruth[i] & 0x33333333) << 2) | ((pTruth[i] & 0xCCCCCCCC) >> 2);
-        return;
-    case 2:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ((pTruth[i] & 0x0F0F0F0F) << 4) | ((pTruth[i] & 0xF0F0F0F0) >> 4);
-        return;
-    case 3:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ((pTruth[i] & 0x00FF00FF) << 8) | ((pTruth[i] & 0xFF00FF00) >> 8);
-        return;
-    case 4:
-        for ( i = 0; i < nWords; i++ )
-            pTruth[i] = ((pTruth[i] & 0x0000FFFF) << 16) | ((pTruth[i] & 0xFFFF0000) >> 16);
-        return;
-    default:
-        Step = (1 << (iVar - 5));
-        for ( k = 0; k < nWords; k += 2*Step )
-        {
-            for ( i = 0; i < Step; i++ )
-            {
-                Temp = pTruth[i];
-                pTruth[i] = pTruth[Step+i];
-                pTruth[Step+i] = Temp;
-            }
-            pTruth += 2*Step;
-        }
-        return;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Computes minimum overlap in supports of cofactors.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_TruthMinCofSuppOverlap( unsigned * pTruth, int nVars, int * pVarMin )
-{
-    static unsigned uCofactor[16];
-    int i, ValueCur, ValueMin, VarMin;
-    unsigned uSupp0, uSupp1;
-    int nVars0, nVars1;
-    assert( nVars <= 9 );
-    ValueMin = 32;
-    VarMin   = -1;
-    for ( i = 0; i < nVars; i++ )
-    {
-        // get negative cofactor
-        Kit_TruthCopy( uCofactor, pTruth, nVars );
-        Kit_TruthCofactor0( uCofactor, nVars, i );
-        uSupp0 = Kit_TruthSupport( uCofactor, nVars );
-        nVars0 = Kit_WordCountOnes( uSupp0 );
-//Kit_PrintBinary( stdout, &uSupp0, 8 ); printf( "\n" );
-        // get positive cofactor
-        Kit_TruthCopy( uCofactor, pTruth, nVars );
-        Kit_TruthCofactor1( uCofactor, nVars, i );
-        uSupp1 = Kit_TruthSupport( uCofactor, nVars );
-        nVars1 = Kit_WordCountOnes( uSupp1 );
-//Kit_PrintBinary( stdout, &uSupp1, 8 ); printf( "\n" );
-        // get the number of common vars
-        ValueCur = Kit_WordCountOnes( uSupp0 & uSupp1 );
-        if ( ValueMin > ValueCur && nVars0 <= 5 && nVars1 <= 5 )
-        {
-            ValueMin = ValueCur;
-            VarMin = i;
-        }
-        if ( ValueMin == 0 )
-            break;
-    }
-    if ( pVarMin )
-        *pVarMin = VarMin;
-    return ValueMin;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Find the best cofactoring variable.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_TruthBestCofVar( unsigned * pTruth, int nVars, unsigned * pCof0, unsigned * pCof1 )
-{
-    int i, iBestVar, nSuppSizeCur0, nSuppSizeCur1, nSuppSizeCur, nSuppSizeMin;
-    if ( Kit_TruthIsConst0(pTruth, nVars) || Kit_TruthIsConst1(pTruth, nVars) )
-        return -1;
-    // iterate through variables
-    iBestVar = -1;
-    nSuppSizeMin = KIT_INFINITY;
-    for ( i = 0; i < nVars; i++ )
-    {
-        // cofactor the functiona and get support sizes
-        Kit_TruthCofactor0New( pCof0, pTruth, nVars, i );
-        Kit_TruthCofactor1New( pCof1, pTruth, nVars, i );
-        nSuppSizeCur0 = Kit_TruthSupportSize( pCof0, nVars );
-        nSuppSizeCur1 = Kit_TruthSupportSize( pCof1, nVars );
-        nSuppSizeCur  = nSuppSizeCur0 + nSuppSizeCur1;
-        // compare this variable with other variables
-        if ( nSuppSizeMin > nSuppSizeCur ) 
-        {
-            nSuppSizeMin = nSuppSizeCur;
-            iBestVar = i;
-        }
-    }
-    assert( iBestVar != -1 );
-    // cofactor w.r.t. this variable
-    Kit_TruthCofactor0New( pCof0, pTruth, nVars, iBestVar );
-    Kit_TruthCofactor1New( pCof1, pTruth, nVars, iBestVar );
-    return iBestVar;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of 1's in each cofactor.]
-
-  Description [The resulting numbers are stored in the array of shorts, 
-  whose length is 2*nVars. The number of 1's is counted in a different
-  space than the original function. For example, if the function depends 
-  on k variables, the cofactors are assumed to depend on k-1 variables.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthCountOnesInCofs( unsigned * pTruth, int nVars, short * pStore )
-{
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, k, Counter;
-    memset( pStore, 0, sizeof(short) * 2 * nVars );
-    if ( nVars <= 5 )
-    {
-        if ( nVars > 0 )
-        {
-            pStore[2*0+0] = Kit_WordCountOnes( pTruth[0] & 0x55555555 );
-            pStore[2*0+1] = Kit_WordCountOnes( pTruth[0] & 0xAAAAAAAA );
-        }
-        if ( nVars > 1 )
-        {
-            pStore[2*1+0] = Kit_WordCountOnes( pTruth[0] & 0x33333333 );
-            pStore[2*1+1] = Kit_WordCountOnes( pTruth[0] & 0xCCCCCCCC );
-        }
-        if ( nVars > 2 )
-        {
-            pStore[2*2+0] = Kit_WordCountOnes( pTruth[0] & 0x0F0F0F0F );
-            pStore[2*2+1] = Kit_WordCountOnes( pTruth[0] & 0xF0F0F0F0 );
-        }
-        if ( nVars > 3 )
-        {
-            pStore[2*3+0] = Kit_WordCountOnes( pTruth[0] & 0x00FF00FF );
-            pStore[2*3+1] = Kit_WordCountOnes( pTruth[0] & 0xFF00FF00 );
-        }
-        if ( nVars > 4 )
-        {
-            pStore[2*4+0] = Kit_WordCountOnes( pTruth[0] & 0x0000FFFF );
-            pStore[2*4+1] = Kit_WordCountOnes( pTruth[0] & 0xFFFF0000 );
-        }
-        return;
-    }
-    // nVars >= 6
-    // count 1's for all other variables
-    for ( k = 0; k < nWords; k++ )
-    {
-        Counter = Kit_WordCountOnes( pTruth[k] );
-        for ( i = 5; i < nVars; i++ )
-            if ( k & (1 << (i-5)) )
-                pStore[2*i+1] += Counter;
-            else
-                pStore[2*i+0] += Counter;
-    }
-    // count 1's for the first five variables
-    for ( k = 0; k < nWords/2; k++ )
-    {
-        pStore[2*0+0] += Kit_WordCountOnes( (pTruth[0] & 0x55555555) | ((pTruth[1] & 0x55555555) <<  1) );
-        pStore[2*0+1] += Kit_WordCountOnes( (pTruth[0] & 0xAAAAAAAA) | ((pTruth[1] & 0xAAAAAAAA) >>  1) );
-        pStore[2*1+0] += Kit_WordCountOnes( (pTruth[0] & 0x33333333) | ((pTruth[1] & 0x33333333) <<  2) );
-        pStore[2*1+1] += Kit_WordCountOnes( (pTruth[0] & 0xCCCCCCCC) | ((pTruth[1] & 0xCCCCCCCC) >>  2) );
-        pStore[2*2+0] += Kit_WordCountOnes( (pTruth[0] & 0x0F0F0F0F) | ((pTruth[1] & 0x0F0F0F0F) <<  4) );
-        pStore[2*2+1] += Kit_WordCountOnes( (pTruth[0] & 0xF0F0F0F0) | ((pTruth[1] & 0xF0F0F0F0) >>  4) );
-        pStore[2*3+0] += Kit_WordCountOnes( (pTruth[0] & 0x00FF00FF) | ((pTruth[1] & 0x00FF00FF) <<  8) );
-        pStore[2*3+1] += Kit_WordCountOnes( (pTruth[0] & 0xFF00FF00) | ((pTruth[1] & 0xFF00FF00) >>  8) );
-        pStore[2*4+0] += Kit_WordCountOnes( (pTruth[0] & 0x0000FFFF) | ((pTruth[1] & 0x0000FFFF) << 16) );
-        pStore[2*4+1] += Kit_WordCountOnes( (pTruth[0] & 0xFFFF0000) | ((pTruth[1] & 0xFFFF0000) >> 16) );
-        pTruth += 2;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Counts the number of 1's in each cofactor.]
-
-  Description [Verifies the above procedure.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthCountOnesInCofsSlow( unsigned * pTruth, int nVars, short * pStore, unsigned * pAux )
-{
-    int i;
-    for ( i = 0; i < nVars; i++ )
-    {
-        Kit_TruthCofactor0New( pAux, pTruth, nVars, i );
-        pStore[2*i+0] = Kit_TruthCountOnes( pAux, nVars ) / 2;
-        Kit_TruthCofactor1New( pAux, pTruth, nVars, i );
-        pStore[2*i+1] = Kit_TruthCountOnes( pAux, nVars ) / 2;
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Canonicize the truth table.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Kit_TruthHash( unsigned * pIn, int nWords )
-{
-    // The 1,024 smallest prime numbers used to compute the hash value
-    // http://www.math.utah.edu/~alfeld/math/primelist.html
-    static int HashPrimes[1024] = { 2, 3, 5, 
-    7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 
-    101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 
-    193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 
-    293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 
-    409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 
-    521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 
-    641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 
-    757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 
-    881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997, 
-    1009, 1013, 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061, 1063, 1069, 1087, 1091, 
-    1093, 1097, 1103, 1109, 1117, 1123, 1129, 1151, 1153, 1163, 1171, 1181, 1187, 1193, 
-    1201, 1213, 1217, 1223, 1229, 1231, 1237, 1249, 1259, 1277, 1279, 1283, 1289, 1291, 
-    1297, 1301, 1303, 1307, 1319, 1321, 1327, 1361, 1367, 1373, 1381, 1399, 1409, 1423, 
-    1427, 1429, 1433, 1439, 1447, 1451, 1453, 1459, 1471, 1481, 1483, 1487, 1489, 1493, 
-    1499, 1511, 1523, 1531, 1543, 1549, 1553, 1559, 1567, 1571, 1579, 1583, 1597, 1601, 
-    1607, 1609, 1613, 1619, 1621, 1627, 1637, 1657, 1663, 1667, 1669, 1693, 1697, 1699, 
-    1709, 1721, 1723, 1733, 1741, 1747, 1753, 1759, 1777, 1783, 1787, 1789, 1801, 1811, 
-    1823, 1831, 1847, 1861, 1867, 1871, 1873, 1877, 1879, 1889, 1901, 1907, 1913, 1931, 
-    1933, 1949, 1951, 1973, 1979, 1987, 1993, 1997, 1999, 2003, 2011, 2017, 2027, 2029, 
-    2039, 2053, 2063, 2069, 2081, 2083, 2087, 2089, 2099, 2111, 2113, 2129, 2131, 2137, 
-    2141, 2143, 2153, 2161, 2179, 2203, 2207, 2213, 2221, 2237, 2239, 2243, 2251, 2267, 
-    2269, 2273, 2281, 2287, 2293, 2297, 2309, 2311, 2333, 2339, 2341, 2347, 2351, 2357, 
-    2371, 2377, 2381, 2383, 2389, 2393, 2399, 2411, 2417, 2423, 2437, 2441, 2447, 2459, 
-    2467, 2473, 2477, 2503, 2521, 2531, 2539, 2543, 2549, 2551, 2557, 2579, 2591, 2593, 
-    2609, 2617, 2621, 2633, 2647, 2657, 2659, 2663, 2671, 2677, 2683, 2687, 2689, 2693, 
-    2699, 2707, 2711, 2713, 2719, 2729, 2731, 2741, 2749, 2753, 2767, 2777, 2789, 2791, 
-    2797, 2801, 2803, 2819, 2833, 2837, 2843, 2851, 2857, 2861, 2879, 2887, 2897, 2903, 
-    2909, 2917, 2927, 2939, 2953, 2957, 2963, 2969, 2971, 2999, 3001, 3011, 3019, 3023, 
-    3037, 3041, 3049, 3061, 3067, 3079, 3083, 3089, 3109, 3119, 3121, 3137, 3163, 3167, 
-    3169, 3181, 3187, 3191, 3203, 3209, 3217, 3221, 3229, 3251, 3253, 3257, 3259, 3271, 
-    3299, 3301, 3307, 3313, 3319, 3323, 3329, 3331, 3343, 3347, 3359, 3361, 3371, 3373, 
-    3389, 3391, 3407, 3413, 3433, 3449, 3457, 3461, 3463, 3467, 3469, 3491, 3499, 3511, 
-    3517, 3527, 3529, 3533, 3539, 3541, 3547, 3557, 3559, 3571, 3581, 3583, 3593, 3607, 
-    3613, 3617, 3623, 3631, 3637, 3643, 3659, 3671, 3673, 3677, 3691, 3697, 3701, 3709, 
-    3719, 3727, 3733, 3739, 3761, 3767, 3769, 3779, 3793, 3797, 3803, 3821, 3823, 3833, 
-    3847, 3851, 3853, 3863, 3877, 3881, 3889, 3907, 3911, 3917, 3919, 3923, 3929, 3931, 
-    3943, 3947, 3967, 3989, 4001, 4003, 4007, 4013, 4019, 4021, 4027, 4049, 4051, 4057, 
-    4073, 4079, 4091, 4093, 4099, 4111, 4127, 4129, 4133, 4139, 4153, 4157, 4159, 4177, 
-    4201, 4211, 4217, 4219, 4229, 4231, 4241, 4243, 4253, 4259, 4261, 4271, 4273, 4283, 
-    4289, 4297, 4327, 4337, 4339, 4349, 4357, 4363, 4373, 4391, 4397, 4409, 4421, 4423, 
-    4441, 4447, 4451, 4457, 4463, 4481, 4483, 4493, 4507, 4513, 4517, 4519, 4523, 4547, 
-    4549, 4561, 4567, 4583, 4591, 4597, 4603, 4621, 4637, 4639, 4643, 4649, 4651, 4657, 
-    4663, 4673, 4679, 4691, 4703, 4721, 4723, 4729, 4733, 4751, 4759, 4783, 4787, 4789, 
-    4793, 4799, 4801, 4813, 4817, 4831, 4861, 4871, 4877, 4889, 4903, 4909, 4919, 4931, 
-    4933, 4937, 4943, 4951, 4957, 4967, 4969, 4973, 4987, 4993, 4999, 5003, 5009, 5011, 
-    5021, 5023, 5039, 5051, 5059, 5077, 5081, 5087, 5099, 5101, 5107, 5113, 5119, 5147, 
-    5153, 5167, 5171, 5179, 5189, 5197, 5209, 5227, 5231, 5233, 5237, 5261, 5273, 5279, 
-    5281, 5297, 5303, 5309, 5323, 5333, 5347, 5351, 5381, 5387, 5393, 5399, 5407, 5413, 
-    5417, 5419, 5431, 5437, 5441, 5443, 5449, 5471, 5477, 5479, 5483, 5501, 5503, 5507, 
-    5519, 5521, 5527, 5531, 5557, 5563, 5569, 5573, 5581, 5591, 5623, 5639, 5641, 5647, 
-    5651, 5653, 5657, 5659, 5669, 5683, 5689, 5693, 5701, 5711, 5717, 5737, 5741, 5743, 
-    5749, 5779, 5783, 5791, 5801, 5807, 5813, 5821, 5827, 5839, 5843, 5849, 5851, 5857, 
-    5861, 5867, 5869, 5879, 5881, 5897, 5903, 5923, 5927, 5939, 5953, 5981, 5987, 6007, 
-    6011, 6029, 6037, 6043, 6047, 6053, 6067, 6073, 6079, 6089, 6091, 6101, 6113, 6121, 
-    6131, 6133, 6143, 6151, 6163, 6173, 6197, 6199, 6203, 6211, 6217, 6221, 6229, 6247, 
-    6257, 6263, 6269, 6271, 6277, 6287, 6299, 6301, 6311, 6317, 6323, 6329, 6337, 6343, 
-    6353, 6359, 6361, 6367, 6373, 6379, 6389, 6397, 6421, 6427, 6449, 6451, 6469, 6473, 
-    6481, 6491, 6521, 6529, 6547, 6551, 6553, 6563, 6569, 6571, 6577, 6581, 6599, 6607, 
-    6619, 6637, 6653, 6659, 6661, 6673, 6679, 6689, 6691, 6701, 6703, 6709, 6719, 6733, 
-    6737, 6761, 6763, 6779, 6781, 6791, 6793, 6803, 6823, 6827, 6829, 6833, 6841, 6857, 
-    6863, 6869, 6871, 6883, 6899, 6907, 6911, 6917, 6947, 6949, 6959, 6961, 6967, 6971, 
-    6977, 6983, 6991, 6997, 7001, 7013, 7019, 7027, 7039, 7043, 7057, 7069, 7079, 7103, 
-    7109, 7121, 7127, 7129, 7151, 7159, 7177, 7187, 7193, 7207, 7211, 7213, 7219, 7229, 
-    7237, 7243, 7247, 7253, 7283, 7297, 7307, 7309, 7321, 7331, 7333, 7349, 7351, 7369, 
-    7393, 7411, 7417, 7433, 7451, 7457, 7459, 7477, 7481, 7487, 7489, 7499, 7507, 7517, 
-    7523, 7529, 7537, 7541, 7547, 7549, 7559, 7561, 7573, 7577, 7583, 7589, 7591, 7603, 
-    7607, 7621, 7639, 7643, 7649, 7669, 7673, 7681, 7687, 7691, 7699, 7703, 7717, 7723, 
-    7727, 7741, 7753, 7757, 7759, 7789, 7793, 7817, 7823, 7829, 7841, 7853, 7867, 7873, 
-    7877, 7879, 7883, 7901, 7907, 7919, 7927, 7933, 7937, 7949, 7951, 7963, 7993, 8009, 
-    8011, 8017, 8039, 8053, 8059, 8069, 8081, 8087, 8089, 8093, 8101, 8111, 8117, 8123, 
-    8147, 8161 };
-    int i;
-    unsigned uHashKey;
-    assert( nWords <= 1024 );
-    uHashKey = 0;
-    for ( i = 0; i < nWords; i++ )
-        uHashKey ^= HashPrimes[i] * pIn[i];
-    return uHashKey;
-}
-
- 
-/**Function*************************************************************
-
-  Synopsis    [Canonicize the truth table.]
-
-  Description [Returns the phase. ]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-unsigned Kit_TruthSemiCanonicize( unsigned * pInOut, unsigned * pAux, int nVars, char * pCanonPerm, short * pStore )
-{
-//    short pStore2[32];
-    unsigned * pIn = pInOut, * pOut = pAux, * pTemp;
-    int nWords = Kit_TruthWordNum( nVars );
-    int i, Temp, fChange, Counter;//, nOnes;//, k, j, w, Limit;
-    unsigned uCanonPhase;
-
-    // canonicize output
-    uCanonPhase = 0;
-/*
-    nOnes = Kit_TruthCountOnes(pIn, nVars);
-    if ( (nOnes > nWords * 16) )//|| ((nOnes == nWords * 16) && (pIn[0] & 1)) )
-    {
-        uCanonPhase |= (1 << nVars);
-        Kit_TruthNot( pIn, pIn, nVars );
-    }
-*/
-    // collect the minterm counts
-    Kit_TruthCountOnesInCofs( pIn, nVars, pStore );
-//    Kit_TruthCountOnesInCofsSlow( pIn, nVars, pStore2, pAux );
-//    for ( i = 0; i < 2*nVars; i++ )
-//    {
-//        assert( pStore[i] == pStore2[i] );
-//    }
-
-    // canonicize phase
-    for ( i = 0; i < nVars; i++ )
-    {
-        if ( pStore[2*i+0] >= pStore[2*i+1] )
-            continue;
-        uCanonPhase |= (1 << i);
-        Temp = pStore[2*i+0];
-        pStore[2*i+0] = pStore[2*i+1];
-        pStore[2*i+1] = Temp;
-        Kit_TruthChangePhase( pIn, nVars, i );
-    }
-
-//    Kit_PrintHexadecimal( stdout, pIn, nVars );
-//    printf( "\n" );
-
-    // permute
-    Counter = 0;
-    do {
-        fChange = 0;
-        for ( i = 0; i < nVars-1; i++ )
-        {
-            if ( pStore[2*i] >= pStore[2*(i+1)] )
-                continue;
-            Counter++;
-            fChange = 1;
-
-            Temp = pCanonPerm[i];
-            pCanonPerm[i] = pCanonPerm[i+1];
-            pCanonPerm[i+1] = Temp;
-
-            Temp = pStore[2*i];
-            pStore[2*i] = pStore[2*(i+1)];
-            pStore[2*(i+1)] = Temp;
-
-            Temp = pStore[2*i+1];
-            pStore[2*i+1] = pStore[2*(i+1)+1];
-            pStore[2*(i+1)+1] = Temp;
-
-            // if the polarity of variables is different, swap them
-            if ( ((uCanonPhase & (1 << i)) > 0) != ((uCanonPhase & (1 << (i+1))) > 0) )
-            {
-                uCanonPhase ^= (1 << i);
-                uCanonPhase ^= (1 << (i+1));
-            }
-
-            Kit_TruthSwapAdjacentVars( pOut, pIn, nVars, i );
-            pTemp = pIn; pIn = pOut; pOut = pTemp;
-        }
-    } while ( fChange );
-
-/*
-    Extra_PrintBinary( stdout, &uCanonPhase, nVars+1 ); printf( " : " );
-    for ( i = 0; i < nVars; i++ )
-        printf( "%d=%d/%d  ", pCanonPerm[i], pStore[2*i], pStore[2*i+1] );
-    printf( "  C = %d\n", Counter );
-    Extra_PrintHexadecimal( stdout, pIn, nVars );
-    printf( "\n" );
-*/
-
-/*
-    // process symmetric variable groups
-    uSymms = 0;
-    for ( i = 0; i < nVars-1; i++ )
-    {
-        if ( pStore[2*i] != pStore[2*(i+1)] ) // i and i+1 cannot be symmetric
-            continue;
-        if ( pStore[2*i] != pStore[2*i+1] )
-            continue;
-        if ( Kit_TruthVarsSymm( pIn, nVars, i, i+1 ) )
-            continue;
-        if ( Kit_TruthVarsAntiSymm( pIn, nVars, i, i+1 ) )
-            Kit_TruthChangePhase( pIn, nVars, i+1 );
-    }
-*/
-
-/*
-    // process symmetric variable groups
-    uSymms = 0;
-    for ( i = 0; i < nVars-1; i++ )
-    {
-        if ( pStore[2*i] != pStore[2*(i+1)] ) // i and i+1 cannot be symmetric
-            continue;
-        // i and i+1 can be symmetric
-        // find the end of this group
-        for ( k = i+1; k < nVars; k++ )
-            if ( pStore[2*i] != pStore[2*k] ) 
-                break;
-        Limit = k;
-        assert( i < Limit-1 );
-        // go through the variables in this group
-        for ( j = i + 1; j < Limit; j++ )
-        {
-            // check symmetry
-            if ( Kit_TruthVarsSymm( pIn, nVars, i, j ) )
-            {
-                uSymms |= (1 << j);
-                continue;
-            }
-            // they are phase-unknown
-            if ( pStore[2*i] == pStore[2*i+1] ) 
-            {
-                if ( Kit_TruthVarsAntiSymm( pIn, nVars, i, j ) )
-                {
-                    Kit_TruthChangePhase( pIn, nVars, j );
-                    uCanonPhase ^= (1 << j);
-                    uSymms |= (1 << j);
-                    continue;
-                }
-            }
-
-            // they are not symmetric - move j as far as it goes in the group
-            for ( k = j; k < Limit-1; k++ )
-            {
-                Counter++;
-
-                Temp = pCanonPerm[k];
-                pCanonPerm[k] = pCanonPerm[k+1];
-                pCanonPerm[k+1] = Temp;
-
-                assert( pStore[2*k] == pStore[2*(k+1)] );
-                Kit_TruthSwapAdjacentVars( pOut, pIn, nVars, k );
-                pTemp = pIn; pIn = pOut; pOut = pTemp;
-            }
-            Limit--;
-            j--;
-        }
-        i = Limit - 1;
-    }
-*/
-
-    // swap if it was moved an even number of times
-    if ( Counter & 1 )
-        Kit_TruthCopy( pOut, pIn, nVars );
-    return uCanonPhase;
-}
-
- 
-/**Function*************************************************************
-
-  Synopsis    [Fast counting minterms in the cofactors of a function.]
-
-  Description [Returns the total number of minterms in the function.
-  The resulting array (pRes) contains the number of minterms in 0-cofactor
-  w.r.t. each variables. The additional array (pBytes) is used for internal 
-  storage. It should have the size equal to the number of truth table bytes.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Kit_TruthCountMinterms( unsigned * pTruth, int nVars, int * pRes, int * pBytes )
-{
-    // the number of 1s if every byte as well as in the 0-cofactors w.r.t. three variables
-    static unsigned Table[256] = {
-        0x00000000, 0x01010101, 0x01010001, 0x02020102, 0x01000101, 0x02010202, 0x02010102, 0x03020203,
-        0x01000001, 0x02010102, 0x02010002, 0x03020103, 0x02000102, 0x03010203, 0x03010103, 0x04020204,
-        0x00010101, 0x01020202, 0x01020102, 0x02030203, 0x01010202, 0x02020303, 0x02020203, 0x03030304,
-        0x01010102, 0x02020203, 0x02020103, 0x03030204, 0x02010203, 0x03020304, 0x03020204, 0x04030305,
-        0x00010001, 0x01020102, 0x01020002, 0x02030103, 0x01010102, 0x02020203, 0x02020103, 0x03030204,
-        0x01010002, 0x02020103, 0x02020003, 0x03030104, 0x02010103, 0x03020204, 0x03020104, 0x04030205,
-        0x00020102, 0x01030203, 0x01030103, 0x02040204, 0x01020203, 0x02030304, 0x02030204, 0x03040305,
-        0x01020103, 0x02030204, 0x02030104, 0x03040205, 0x02020204, 0x03030305, 0x03030205, 0x04040306,
-        0x00000101, 0x01010202, 0x01010102, 0x02020203, 0x01000202, 0x02010303, 0x02010203, 0x03020304,
-        0x01000102, 0x02010203, 0x02010103, 0x03020204, 0x02000203, 0x03010304, 0x03010204, 0x04020305,
-        0x00010202, 0x01020303, 0x01020203, 0x02030304, 0x01010303, 0x02020404, 0x02020304, 0x03030405,
-        0x01010203, 0x02020304, 0x02020204, 0x03030305, 0x02010304, 0x03020405, 0x03020305, 0x04030406,
-        0x00010102, 0x01020203, 0x01020103, 0x02030204, 0x01010203, 0x02020304, 0x02020204, 0x03030305,
-        0x01010103, 0x02020204, 0x02020104, 0x03030205, 0x02010204, 0x03020305, 0x03020205, 0x04030306,
-        0x00020203, 0x01030304, 0x01030204, 0x02040305, 0x01020304, 0x02030405, 0x02030305, 0x03040406,
-        0x01020204, 0x02030305, 0x02030205, 0x03040306, 0x02020305, 0x03030406, 0x03030306, 0x04040407,
-        0x00000001, 0x01010102, 0x01010002, 0x02020103, 0x01000102, 0x02010203, 0x02010103, 0x03020204,
-        0x01000002, 0x02010103, 0x02010003, 0x03020104, 0x02000103, 0x03010204, 0x03010104, 0x04020205,
-        0x00010102, 0x01020203, 0x01020103, 0x02030204, 0x01010203, 0x02020304, 0x02020204, 0x03030305,
-        0x01010103, 0x02020204, 0x02020104, 0x03030205, 0x02010204, 0x03020305, 0x03020205, 0x04030306,
-        0x00010002, 0x01020103, 0x01020003, 0x02030104, 0x01010103, 0x02020204, 0x02020104, 0x03030205,
-        0x01010003, 0x02020104, 0x02020004, 0x03030105, 0x02010104, 0x03020205, 0x03020105, 0x04030206,
-        0x00020103, 0x01030204, 0x01030104, 0x02040205, 0x01020204, 0x02030305, 0x02030205, 0x03040306,
-        0x01020104, 0x02030205, 0x02030105, 0x03040206, 0x02020205, 0x03030306, 0x03030206, 0x04040307,
-        0x00000102, 0x01010203, 0x01010103, 0x02020204, 0x01000203, 0x02010304, 0x02010204, 0x03020305,
-        0x01000103, 0x02010204, 0x02010104, 0x03020205, 0x02000204, 0x03010305, 0x03010205, 0x04020306,
-        0x00010203, 0x01020304, 0x01020204, 0x02030305, 0x01010304, 0x02020405, 0x02020305, 0x03030406,
-        0x01010204, 0x02020305, 0x02020205, 0x03030306, 0x02010305, 0x03020406, 0x03020306, 0x04030407,
-        0x00010103, 0x01020204, 0x01020104, 0x02030205, 0x01010204, 0x02020305, 0x02020205, 0x03030306,
-        0x01010104, 0x02020205, 0x02020105, 0x03030206, 0x02010205, 0x03020306, 0x03020206, 0x04030307,
-        0x00020204, 0x01030305, 0x01030205, 0x02040306, 0x01020305, 0x02030406, 0x02030306, 0x03040407,
-        0x01020205, 0x02030306, 0x02030206, 0x03040307, 0x02020306, 0x03030407, 0x03030307, 0x04040408
-    };
-    unsigned uSum;
-    unsigned char * pTruthC, * pLimit;
-    int i, iVar, Step, nWords, nBytes, nTotal;
-
-    assert( nVars <= 20 );
-
-    // clear storage
-    memset( pRes, 0, sizeof(int) * nVars );
-
-    // count the number of one's in 0-cofactors of the first three variables
-    nTotal = uSum = 0;
-    nWords = Kit_TruthWordNum( nVars );
-    nBytes = nWords * 4;
-    pTruthC = (unsigned char *)pTruth;
-    pLimit = pTruthC + nBytes;
-    for ( ; pTruthC < pLimit; pTruthC++ )
-    {
-        uSum += Table[*pTruthC];
-        *pBytes++ = (Table[*pTruthC] & 0xff);
-        if ( (uSum & 0xff) > 246 )
-        {
-            nTotal += (uSum & 0xff);
-            pRes[0] += ((uSum >>  8) & 0xff);
-            pRes[2] += ((uSum >> 16) & 0xff);
-            pRes[3] += ((uSum >> 24) & 0xff);
-            uSum = 0;
-        }
-    }
-    if ( uSum )
-    {
-        nTotal += (uSum & 0xff);
-        pRes[0] += ((uSum >>  8) & 0xff);
-        pRes[1] += ((uSum >> 16) & 0xff);
-        pRes[2] += ((uSum >> 24) & 0xff);
-    }
-
-    // count all other variables
-    for ( iVar = 3, Step = 1; Step < nBytes; Step *= 2, iVar++ )
-        for ( i = 0; i < nBytes; i += Step + Step )
-        {
-            pRes[iVar] += pBytes[i];
-            pBytes[i] += pBytes[i+Step];
-        }
-    assert( pBytes[0] == nTotal );
-    assert( iVar == nVars );
-    return nTotal;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Prints the hex unsigned into a file.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_PrintHexadecimal( FILE * pFile, unsigned Sign[], int nVars )
-{
-    int nDigits, Digit, k;
-    // write the number into the file
-    nDigits = (1 << nVars) / 4;
-    for ( k = nDigits - 1; k >= 0; k-- )
-    {
-        Digit = ((Sign[k/8] >> ((k%8) * 4)) & 15);
-        if ( Digit < 10 )
-            fprintf( pFile, "%d", Digit );
-        else
-            fprintf( pFile, "%c", 'a' + Digit-10 );
-    }
-//    fprintf( pFile, "\n" );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Fast counting minterms for the functions.]
-
-  Description [Returns 0 if the function is a constant.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Kit_TruthCountMintermsPrecomp()
-{
-    int bit_count[256] = {
-      0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,
-      1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
-      1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
-      2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
-      1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
-      2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
-      2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
-      3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,4,5,5,6,5,6,6,7,5,6,6,7,6,7,7,8
-    };
-    unsigned i, uWord;
-    for ( i = 0; i < 256; i++ )
-    {
-        if ( i % 8 == 0 )
-            printf( "\n" );
-        uWord  =  bit_count[i];
-        uWord |= (bit_count[i & 0x55] <<  8);
-        uWord |= (bit_count[i & 0x33] << 16);
-        uWord |= (bit_count[i & 0x0f] << 24);
-        printf( "0x" );
-        Kit_PrintHexadecimal( stdout, &uWord, 5 );
-        printf( ", " );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Dumps truth table into a file.]
-
-  Description [Generates script file for reading into ABC.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Kit_TruthDumpToFile( unsigned * pTruth, int nVars, int nFile )
-{
-    static char pFileName[100];
-    FILE * pFile;
-    sprintf( pFileName, "tt\\s%04d", nFile );
-    pFile = fopen( pFileName, "w" );
-    fprintf( pFile, "rt " );
-    Extra_PrintHexadecimal( pFile, pTruth, nVars );
-    fprintf( pFile, "; bdd; sop; ps\n" );
-    fclose( pFile );
-    return pFileName;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/kit_.c b/src/aig/kit/kit_.c
deleted file mode 100644
index 5c68ee3c..00000000
--- a/src/aig/kit/kit_.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [kit_.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Computation kit.]
-
-  Synopsis    []
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - Dec 6, 2006.]
-
-  Revision    [$Id: kit_.c,v 1.00 2006/12/06 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "kit.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/kit/module.make b/src/aig/kit/module.make
deleted file mode 100644
index ea62381b..00000000
--- a/src/aig/kit/module.make
+++ /dev/null
@@ -1,10 +0,0 @@
-SRC +=  src/aig/kit/kitAig.c \
-    src/aig/kit/kitBdd.c \
-    src/aig/kit/kitCloud.c src/aig/kit/cloud.c \
-    src/aig/kit/kitDsd.c \
-    src/aig/kit/kitFactor.c \
-    src/aig/kit/kitGraph.c \
-    src/aig/kit/kitHop.c \
-    src/aig/kit/kitIsop.c \
-    src/aig/kit/kitSop.c \
-    src/aig/kit/kitTruth.c
diff --git a/src/aig/mem/mem.c b/src/aig/mem/mem.c
deleted file mode 100644
index f5bfbfd8..00000000
--- a/src/aig/mem/mem.c
+++ /dev/null
@@ -1,604 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [esopMem.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Cover manipulation package.]
-
-  Synopsis    [Memory managers.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: esopMem.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include "mem.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-struct Mem_Fixed_t_
-{
-    // information about individual entries
-    int           nEntrySize;    // the size of one entry
-    int           nEntriesAlloc; // the total number of entries allocated
-    int           nEntriesUsed;  // the number of entries in use
-    int           nEntriesMax;   // the max number of entries in use
-    char *        pEntriesFree;  // the linked list of free entries
-
-    // this is where the memory is stored
-    int           nChunkSize;    // the size of one chunk
-    int           nChunksAlloc;  // the maximum number of memory chunks 
-    int           nChunks;       // the current number of memory chunks 
-    char **       pChunks;       // the allocated memory
-
-    // statistics
-    int           nMemoryUsed;   // memory used in the allocated entries
-    int           nMemoryAlloc;  // memory allocated
-};
-
-struct Mem_Flex_t_
-{
-    // information about individual entries
-    int           nEntriesUsed;  // the number of entries allocated
-    char *        pCurrent;      // the current pointer to free memory
-    char *        pEnd;          // the first entry outside the free memory
-
-    // this is where the memory is stored
-    int           nChunkSize;    // the size of one chunk
-    int           nChunksAlloc;  // the maximum number of memory chunks 
-    int           nChunks;       // the current number of memory chunks 
-    char **       pChunks;       // the allocated memory
-
-    // statistics
-    int           nMemoryUsed;   // memory used in the allocated entries
-    int           nMemoryAlloc;  // memory allocated
-};
-
-struct Mem_Step_t_
-{
-    int             nMems;    // the number of fixed memory managers employed
-    Mem_Fixed_t **  pMems;    // memory managers: 2^1 words, 2^2 words, etc
-    int             nMapSize; // the size of the memory array
-    Mem_Fixed_t **  pMap;     // maps the number of bytes into its memory manager
-};
-
-#define ALLOC(type, num)     ((type *) malloc(sizeof(type) * (num)))
-#define FREE(obj)             ((obj) ? (free((char *) (obj)), (obj) = 0) : 0)
-#define REALLOC(type, obj, num)    \
-        ((obj) ? ((type *) realloc((char *)(obj), sizeof(type) * (num))) : \
-         ((type *) malloc(sizeof(type) * (num))))
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates memory pieces of fixed size.]
-
-  Description [The size of the chunk is computed as the minimum of
-  1024 entries and 64K. Can only work with entry size at least 4 byte long.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Mem_Fixed_t * Mem_FixedStart( int nEntrySize )
-{
-    Mem_Fixed_t * p;
-
-    p = ALLOC( Mem_Fixed_t, 1 );
-    memset( p, 0, sizeof(Mem_Fixed_t) );
-
-    p->nEntrySize    = nEntrySize;
-    p->nEntriesAlloc = 0;
-    p->nEntriesUsed  = 0;
-    p->pEntriesFree  = NULL;
-
-    if ( nEntrySize * (1 << 10) < (1<<16) )
-        p->nChunkSize = (1 << 10);
-    else
-        p->nChunkSize = (1<<16) / nEntrySize;
-    if ( p->nChunkSize < 8 )
-        p->nChunkSize = 8;
-
-    p->nChunksAlloc  = 64;
-    p->nChunks       = 0;
-    p->pChunks       = ALLOC( char *, p->nChunksAlloc );
-
-    p->nMemoryUsed   = 0;
-    p->nMemoryAlloc  = 0;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Mem_FixedStop( Mem_Fixed_t * p, int fVerbose )
-{
-    int i;
-    if ( p == NULL )
-        return;
-    if ( fVerbose )
-    {
-        printf( "Fixed memory manager: Entry = %5d. Chunk = %5d. Chunks used = %5d.\n",
-            p->nEntrySize, p->nChunkSize, p->nChunks );
-        printf( "   Entries used = %8d. Entries peak = %8d. Memory used = %8d. Memory alloc = %8d.\n",
-            p->nEntriesUsed, p->nEntriesMax, p->nEntrySize * p->nEntriesUsed, p->nMemoryAlloc );
-    }
-    for ( i = 0; i < p->nChunks; i++ )
-        free( p->pChunks[i] );
-    free( p->pChunks );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Mem_FixedEntryFetch( Mem_Fixed_t * p )
-{
-    char * pTemp;
-    int i;
-
-    // check if there are still free entries
-    if ( p->nEntriesUsed == p->nEntriesAlloc )
-    { // need to allocate more entries
-        assert( p->pEntriesFree == NULL );
-        if ( p->nChunks == p->nChunksAlloc )
-        {
-            p->nChunksAlloc *= 2;
-            p->pChunks = REALLOC( char *, p->pChunks, p->nChunksAlloc ); 
-        }
-        p->pEntriesFree = ALLOC( char, p->nEntrySize * p->nChunkSize );
-        p->nMemoryAlloc += p->nEntrySize * p->nChunkSize;
-        // transform these entries into a linked list
-        pTemp = p->pEntriesFree;
-        for ( i = 1; i < p->nChunkSize; i++ )
-        {
-            *((char **)pTemp) = pTemp + p->nEntrySize;
-            pTemp += p->nEntrySize;
-        }
-        // set the last link
-        *((char **)pTemp) = NULL;
-        // add the chunk to the chunk storage
-        p->pChunks[ p->nChunks++ ] = p->pEntriesFree;
-        // add to the number of entries allocated
-        p->nEntriesAlloc += p->nChunkSize;
-    }
-    // incrememt the counter of used entries
-    p->nEntriesUsed++;
-    if ( p->nEntriesMax < p->nEntriesUsed )
-        p->nEntriesMax = p->nEntriesUsed;
-    // return the first entry in the free entry list
-    pTemp = p->pEntriesFree;
-    p->pEntriesFree = *((char **)pTemp);
-    return pTemp;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Mem_FixedEntryRecycle( Mem_Fixed_t * p, char * pEntry )
-{
-    // decrement the counter of used entries
-    p->nEntriesUsed--;
-    // add the entry to the linked list of free entries
-    *((char **)pEntry) = p->pEntriesFree;
-    p->pEntriesFree = pEntry;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description [Relocates all the memory except the first chunk.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Mem_FixedRestart( Mem_Fixed_t * p )
-{
-    int i;
-    char * pTemp;
-
-    // deallocate all chunks except the first one
-    for ( i = 1; i < p->nChunks; i++ )
-        free( p->pChunks[i] );
-    p->nChunks = 1;
-    // transform these entries into a linked list
-    pTemp = p->pChunks[0];
-    for ( i = 1; i < p->nChunkSize; i++ )
-    {
-        *((char **)pTemp) = pTemp + p->nEntrySize;
-        pTemp += p->nEntrySize;
-    }
-    // set the last link
-    *((char **)pTemp) = NULL;
-    // set the free entry list
-    p->pEntriesFree  = p->pChunks[0];
-    // set the correct statistics
-    p->nMemoryAlloc  = p->nEntrySize * p->nChunkSize;
-    p->nMemoryUsed   = 0;
-    p->nEntriesAlloc = p->nChunkSize;
-    p->nEntriesUsed  = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Mem_FixedReadMemUsage( Mem_Fixed_t * p )
-{
-    return p->nMemoryAlloc;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Mem_FixedReadMaxEntriesUsed( Mem_Fixed_t * p )
-{
-    return p->nEntriesMax;
-}
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Allocates entries of flexible size.]
-
-  Description [Can only work with entry size at least 4 byte long.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Mem_Flex_t * Mem_FlexStart()
-{
-    Mem_Flex_t * p;
-
-    p = ALLOC( Mem_Flex_t, 1 );
-    memset( p, 0, sizeof(Mem_Flex_t) );
-
-    p->nEntriesUsed  = 0;
-    p->pCurrent      = NULL;
-    p->pEnd          = NULL;
-
-    p->nChunkSize    = (1 << 14);
-    p->nChunksAlloc  = 64;
-    p->nChunks       = 0;
-    p->pChunks       = ALLOC( char *, p->nChunksAlloc );
-
-    p->nMemoryUsed   = 0;
-    p->nMemoryAlloc  = 0;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Mem_FlexStop( Mem_Flex_t * p, int fVerbose )
-{
-    int i;
-    if ( p == NULL )
-        return;
-    if ( fVerbose )
-    {
-        printf( "Flexible memory manager: Chunk size = %d. Chunks used = %d.\n",
-            p->nChunkSize, p->nChunks );
-        printf( "   Entries used = %d. Memory used = %d. Memory alloc = %d.\n",
-            p->nEntriesUsed, p->nMemoryUsed, p->nMemoryAlloc );
-    }
-    for ( i = 0; i < p->nChunks; i++ )
-        free( p->pChunks[i] );
-    free( p->pChunks );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Mem_FlexEntryFetch( Mem_Flex_t * p, int nBytes )
-{
-    char * pTemp;
-    // check if there are still free entries
-    if ( p->pCurrent == NULL || p->pCurrent + nBytes > p->pEnd )
-    { // need to allocate more entries
-        if ( p->nChunks == p->nChunksAlloc )
-        {
-            p->nChunksAlloc *= 2;
-            p->pChunks = REALLOC( char *, p->pChunks, p->nChunksAlloc ); 
-        }
-        if ( nBytes > p->nChunkSize )
-        {
-            // resize the chunk size if more memory is requested than it can give
-            // (ideally, this should never happen)
-            p->nChunkSize = 2 * nBytes;
-        }
-        p->pCurrent = ALLOC( char, p->nChunkSize );
-        p->pEnd     = p->pCurrent + p->nChunkSize;
-        p->nMemoryAlloc += p->nChunkSize;
-        // add the chunk to the chunk storage
-        p->pChunks[ p->nChunks++ ] = p->pCurrent;
-    }
-    assert( p->pCurrent + nBytes <= p->pEnd );
-    // increment the counter of used entries
-    p->nEntriesUsed++;
-    // keep track of the memory used
-    p->nMemoryUsed += nBytes;
-    // return the next entry
-    pTemp = p->pCurrent;
-    p->pCurrent += nBytes;
-    return pTemp;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description [Relocates all the memory except the first chunk.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Mem_FlexRestart( Mem_Flex_t * p )
-{
-    int i;
-    if ( p->nChunks == 0 )
-        return;
-    // deallocate all chunks except the first one
-    for ( i = 1; i < p->nChunks; i++ )
-        free( p->pChunks[i] );
-    p->nChunks  = 1;
-    p->nMemoryAlloc = p->nChunkSize;
-    // transform these entries into a linked list
-    p->pCurrent = p->pChunks[0];
-    p->pEnd     = p->pCurrent + p->nChunkSize;
-    p->nEntriesUsed = 0;
-    p->nMemoryUsed = 0;
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Mem_FlexReadMemUsage( Mem_Flex_t * p )
-{
-    return p->nMemoryUsed;
-}
-
-
-
-
-
-/**Function*************************************************************
-
-  Synopsis    [Starts the hierarchical memory manager.]
-
-  Description [This manager can allocate entries of any size.
-  Iternally they are mapped into the entries with the number of bytes
-  equal to the power of 2. The smallest entry size is 8 bytes. The
-  next one is 16 bytes etc. So, if the user requests 6 bytes, he gets 
-  8 byte entry. If we asks for 25 bytes, he gets 32 byte entry etc.
-  The input parameters "nSteps" says how many fixed memory managers
-  are employed internally. Calling this procedure with nSteps equal
-  to 10 results in 10 hierarchically arranged internal memory managers, 
-  which can allocate up to 4096 (1Kb) entries. Requests for larger 
-  entries are handed over to malloc() and then free()ed.]
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Mem_Step_t * Mem_StepStart( int nSteps )
-{
-    Mem_Step_t * p;
-    int i, k;
-    p = ALLOC( Mem_Step_t, 1 );
-    memset( p, 0, sizeof(Mem_Step_t) );
-    p->nMems = nSteps;
-    // start the fixed memory managers
-    p->pMems = ALLOC( Mem_Fixed_t *, p->nMems );
-    for ( i = 0; i < p->nMems; i++ )
-        p->pMems[i] = Mem_FixedStart( (8<<i) );
-    // set up the mapping of the required memory size into the corresponding manager
-    p->nMapSize = (4<<p->nMems);
-    p->pMap = ALLOC( Mem_Fixed_t *, p->nMapSize+1 );
-    p->pMap[0] = NULL;
-    for ( k = 1; k <= 4; k++ )
-        p->pMap[k] = p->pMems[0];
-    for ( i = 0; i < p->nMems; i++ )
-        for ( k = (4<<i)+1; k <= (8<<i); k++ )
-            p->pMap[k] = p->pMems[i];
-//for ( i = 1; i < 100; i ++ )
-//printf( "%10d: size = %10d\n", i, p->pMap[i]->nEntrySize );
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the memory manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Mem_StepStop( Mem_Step_t * p, int fVerbose )
-{
-    int i;
-    for ( i = 0; i < p->nMems; i++ )
-        Mem_FixedStop( p->pMems[i], fVerbose );
-//    if ( p->pLargeChunks ) 
-//    {
-//      for ( i = 0; i < p->nLargeChunks; i++ )
-//          free( p->pLargeChunks[i] );
-//      free( p->pLargeChunks );
-//    }
-    free( p->pMems );
-    free( p->pMap );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Creates the entry.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Mem_StepEntryFetch( Mem_Step_t * p, int nBytes )
-{
-    if ( nBytes == 0 )
-        return NULL;
-    if ( nBytes > p->nMapSize )
-    {
-//        printf( "Allocating %d bytes.\n", nBytes );
-/*
-        if ( p->nLargeChunks == p->nLargeChunksAlloc )
-        {
-            if ( p->nLargeChunksAlloc == 0 )
-                p->nLargeChunksAlloc = 5;
-            p->nLargeChunksAlloc *= 2;
-            p->pLargeChunks = REALLOC( char *, p->pLargeChunks, p->nLargeChunksAlloc ); 
-        }
-        p->pLargeChunks[ p->nLargeChunks++ ] = ALLOC( char, nBytes );
-        return p->pLargeChunks[ p->nLargeChunks - 1 ];
-*/
-        return ALLOC( char, nBytes );
-    }
-    return Mem_FixedEntryFetch( p->pMap[nBytes] );
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Recycles the entry.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Mem_StepEntryRecycle( Mem_Step_t * p, char * pEntry, int nBytes )
-{
-    if ( nBytes == 0 )
-        return;
-    if ( nBytes > p->nMapSize )
-    {
-        free( pEntry );
-        return;
-    }
-    Mem_FixedEntryRecycle( p->pMap[nBytes], pEntry );
-}
-
-/**Function*************************************************************
-
-  Synopsis    []
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Mem_StepReadMemUsage( Mem_Step_t * p )
-{
-    int i, nMemTotal = 0;
-    for ( i = 0; i < p->nMems; i++ )
-        nMemTotal += p->pMems[i]->nMemoryAlloc;
-    return nMemTotal;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
diff --git a/src/aig/mem/mem.h b/src/aig/mem/mem.h
deleted file mode 100644
index d43e5fc3..00000000
--- a/src/aig/mem/mem.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [mem.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [Memory management.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: mem.h,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __MEM_H__
-#define __MEM_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Mem_Fixed_t_    Mem_Fixed_t;    
-typedef struct Mem_Flex_t_     Mem_Flex_t;     
-typedef struct Mem_Step_t_     Mem_Step_t;     
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
- 
-/*=== mem.c ===========================================================*/
-// fixed-size-block memory manager
-extern Mem_Fixed_t * Mem_FixedStart( int nEntrySize );
-extern void          Mem_FixedStop( Mem_Fixed_t * p, int fVerbose );
-extern char *        Mem_FixedEntryFetch( Mem_Fixed_t * p );
-extern void          Mem_FixedEntryRecycle( Mem_Fixed_t * p, char * pEntry );
-extern void          Mem_FixedRestart( Mem_Fixed_t * p );
-extern int           Mem_FixedReadMemUsage( Mem_Fixed_t * p );
-extern int           Mem_FixedReadMaxEntriesUsed( Mem_Fixed_t * p );
-// flexible-size-block memory manager
-extern Mem_Flex_t *  Mem_FlexStart();
-extern void          Mem_FlexStop( Mem_Flex_t * p, int fVerbose );
-extern char *        Mem_FlexEntryFetch( Mem_Flex_t * p, int nBytes );
-extern void          Mem_FlexRestart( Mem_Flex_t * p );
-extern int           Mem_FlexReadMemUsage( Mem_Flex_t * p );
-// hierarchical memory manager
-extern Mem_Step_t *  Mem_StepStart( int nSteps );
-extern void          Mem_StepStop( Mem_Step_t * p, int fVerbose );
-extern char *        Mem_StepEntryFetch( Mem_Step_t * p, int nBytes );
-extern void          Mem_StepEntryRecycle( Mem_Step_t * p, char * pEntry, int nBytes );
-extern int           Mem_StepReadMemUsage( Mem_Step_t * p );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/mem/module.make b/src/aig/mem/module.make
deleted file mode 100644
index ae6fcbe4..00000000
--- a/src/aig/mem/module.make
+++ /dev/null
@@ -1 +0,0 @@
-SRC +=    src/aig/mem/mem.c 
diff --git a/src/aig/rwt/module.make b/src/aig/rwt/module.make
deleted file mode 100644
index 439d576f..00000000
--- a/src/aig/rwt/module.make
+++ /dev/null
@@ -1,3 +0,0 @@
-SRC +=  src/aig/rwt/rwtDec.c \
-    src/aig/rwt/rwtMan.c \
-    src/aig/rwt/rwtUtil.c
diff --git a/src/aig/rwt/rwt.h b/src/aig/rwt/rwt.h
deleted file mode 100644
index 9199ff2a..00000000
--- a/src/aig/rwt/rwt.h
+++ /dev/null
@@ -1,156 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [rwt.h]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting package.]
-
-  Synopsis    [External declarations.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: rwt.h,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
-
-***********************************************************************/
- 
-#ifndef __RWT_H__
-#define __RWT_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                          INCLUDES                                ///
-////////////////////////////////////////////////////////////////////////
-
-#include "mem.h"
-#include "extra.h"
-#include "vec.h"
-
-////////////////////////////////////////////////////////////////////////
-///                         PARAMETERS                               ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                         BASIC TYPES                              ///
-////////////////////////////////////////////////////////////////////////
- 
-#define RWT_LIMIT  1048576/4  // ((1 << 20) 
-#define RWT_MIN(a,b)      (((a) < (b))? (a) : (b))
-#define RWT_MAX(a,b)      (((a) > (b))? (a) : (b))
-
-typedef struct Rwt_Man_t_   Rwt_Man_t;
-typedef struct Rwt_Node_t_  Rwt_Node_t;
-
-struct Rwt_Man_t_
-{
-    // internal lookups
-    int                nFuncs;           // number of four var functions
-    unsigned short *   puCanons;         // canonical forms
-    char *             pPhases;          // canonical phases
-    char *             pPerms;           // canonical permutations
-    unsigned char *    pMap;             // mapping of functions into class numbers
-    unsigned short *   pMapInv;          // mapping of classes into functions
-    char *             pPractical;       // practical NPN classes
-    char **            pPerms4;          // four-var permutations
-    // node space
-    Vec_Ptr_t *        vForest;          // all the nodes
-    Rwt_Node_t **      pTable;           // the hash table of nodes by their canonical form
-    Vec_Vec_t *        vClasses;         // the nodes of the equivalence classes
-    Mem_Fixed_t *      pMmNode;          // memory for nodes and cuts
-    // statistical variables
-    int                nTravIds;         // the counter of traversal IDs
-    int                nConsidered;      // the number of nodes considered
-    int                nAdded;           // the number of nodes added to lists
-    int                nClasses;         // the number of NN classes
-    // the result of resynthesis
-    int                fCompl;           // indicates if the output of FF should be complemented
-    void *             pCut;             // the decomposition tree (temporary)
-    void *             pGraph;           // the decomposition tree (temporary)
-    char *             pPerm;            // permutation used for the best cut
-    Vec_Ptr_t *        vFanins;          // the fanins array (temporary)
-    Vec_Ptr_t *        vFaninsCur;       // the fanins array (temporary)
-    Vec_Int_t *        vLevNums;         // the array of levels (temporary)
-    Vec_Ptr_t *        vNodesTemp;       // the nodes in MFFC (temporary)
-    // node statistics
-    int                nNodesConsidered;
-    int                nNodesRewritten;
-    int                nNodesGained;
-    int                nScores[222];
-    int                nCutsGood;
-    int                nCutsBad;
-    int                nSubgraphs;
-    // runtime statistics
-    int                timeStart;
-    int                timeTruth;
-    int                timeCut;
-    int                timeRes;
-    int                timeEval;
-    int                timeMffc;
-    int                timeUpdate;
-    int                timeTotal;
-};
-
-struct Rwt_Node_t_ // 24 bytes
-{
-    int                Id;               // ID 
-    int                TravId;           // traversal ID
-    unsigned           uTruth : 16;      // truth table
-    unsigned           Volume :  8;      // volume
-    unsigned           Level  :  6;      // level
-    unsigned           fUsed  :  1;      // mark
-    unsigned           fExor  :  1;      // mark
-    Rwt_Node_t *       p0;               // first child
-    Rwt_Node_t *       p1;               // second child
-    Rwt_Node_t *       pNext;            // next in the table
-};
-
-// manipulation of complemented attributes
-static inline int          Rwt_IsComplement( Rwt_Node_t * p )    { return (int)(((unsigned long)p) & 01);            }
-static inline Rwt_Node_t * Rwt_Regular( Rwt_Node_t * p )         { return (Rwt_Node_t *)((unsigned long)(p) & ~01);  }
-static inline Rwt_Node_t * Rwt_Not( Rwt_Node_t * p )             { return (Rwt_Node_t *)((unsigned long)(p) ^  01);  }
-static inline Rwt_Node_t * Rwt_NotCond( Rwt_Node_t * p, int c )  { return (Rwt_Node_t *)((unsigned long)(p) ^ (c));  }
-
-////////////////////////////////////////////////////////////////////////
-///                      MACRO DEFINITIONS                           ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-///                    FUNCTION DECLARATIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== rwrDec.c ========================================================*/
-extern void              Rwt_ManPreprocess( Rwt_Man_t * p );
-/*=== rwrMan.c ========================================================*/
-extern Rwt_Man_t *       Rwt_ManStart( int fPrecompute );
-extern void              Rwt_ManStop( Rwt_Man_t * p );
-extern void              Rwt_ManPrintStats( Rwt_Man_t * p );
-extern void              Rwt_ManPrintStatsFile( Rwt_Man_t * p );
-extern void *            Rwt_ManReadDecs( Rwt_Man_t * p );
-extern Vec_Ptr_t *       Rwt_ManReadLeaves( Rwt_Man_t * p );
-extern int               Rwt_ManReadCompl( Rwt_Man_t * p );
-extern void              Rwt_ManAddTimeCuts( Rwt_Man_t * p, int Time );
-extern void              Rwt_ManAddTimeUpdate( Rwt_Man_t * p, int Time );
-extern void              Rwt_ManAddTimeTotal( Rwt_Man_t * p, int Time );
-/*=== rwrUtil.c ========================================================*/
-extern void              Rwt_ManLoadFromArray( Rwt_Man_t * p, int fVerbose );
-extern char *            Rwt_ManGetPractical( Rwt_Man_t * p );
-extern Rwt_Node_t *      Rwt_ManAddVar( Rwt_Man_t * p, unsigned uTruth, int fPrecompute );
-extern void              Rwt_ManIncTravId( Rwt_Man_t * p );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
diff --git a/src/aig/rwt/rwtDec.c b/src/aig/rwt/rwtDec.c
deleted file mode 100644
index 98019629..00000000
--- a/src/aig/rwt/rwtDec.c
+++ /dev/null
@@ -1,150 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [rwtDec.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting package.]
-
-  Synopsis    [Evaluation and decomposition procedures.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: rwtDec.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "rwt.h"
-#include "deco.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static Dec_Graph_t * Rwt_NodePreprocess( Rwt_Man_t * p, Rwt_Node_t * pNode );
-static Dec_Edge_t    Rwt_TravCollect_rec( Rwt_Man_t * p, Rwt_Node_t * pNode, Dec_Graph_t * pGraph );
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Preprocesses computed library of subgraphs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManPreprocess( Rwt_Man_t * p )
-{
-    Dec_Graph_t * pGraph;
-    Rwt_Node_t * pNode;
-    int i, k;
-    // put the nodes into the structure
-    p->pMapInv  = ALLOC( unsigned short, 222 );
-    memset( p->pMapInv, 0, sizeof(unsigned short) * 222 );
-    p->vClasses = Vec_VecStart( 222 );
-    for ( i = 0; i < p->nFuncs; i++ )
-    {
-        if ( p->pTable[i] == NULL )
-            continue;
-        // consider all implementations of this function
-        for ( pNode = p->pTable[i]; pNode; pNode = pNode->pNext )
-        {
-            assert( pNode->uTruth == p->pTable[i]->uTruth );
-            assert( p->pMap[pNode->uTruth] >= 0 && p->pMap[pNode->uTruth] < 222 );
-            Vec_VecPush( p->vClasses, p->pMap[pNode->uTruth], pNode );
-            p->pMapInv[ p->pMap[pNode->uTruth] ] = p->puCanons[pNode->uTruth];
-        }
-    }
-    // compute decomposition forms for each node and verify them
-    Vec_VecForEachEntry( p->vClasses, pNode, i, k )
-    {
-        pGraph = Rwt_NodePreprocess( p, pNode );
-        pNode->pNext = (Rwt_Node_t *)pGraph;
-//        assert( pNode->uTruth == (Dec_GraphDeriveTruth(pGraph) & 0xFFFF) );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Preprocesses subgraphs rooted at this node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dec_Graph_t * Rwt_NodePreprocess( Rwt_Man_t * p, Rwt_Node_t * pNode )
-{
-    Dec_Graph_t * pGraph;
-    Dec_Edge_t eRoot;
-    assert( !Rwt_IsComplement(pNode) );
-    // consider constant
-    if ( pNode->uTruth == 0 )
-        return Dec_GraphCreateConst0();
-    // consider the case of elementary var
-    if ( pNode->uTruth == 0x00FF )
-        return Dec_GraphCreateLeaf( 3, 4, 1 );
-    // start the subgraphs
-    pGraph = Dec_GraphCreate( 4 );
-    // collect the nodes
-    Rwt_ManIncTravId( p );
-    eRoot = Rwt_TravCollect_rec( p, pNode, pGraph );
-    Dec_GraphSetRoot( pGraph, eRoot );
-    return pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Dec_Edge_t Rwt_TravCollect_rec( Rwt_Man_t * p, Rwt_Node_t * pNode, Dec_Graph_t * pGraph )
-{
-    Dec_Edge_t eNode0, eNode1, eNode;
-    // elementary variable
-    if ( pNode->fUsed )
-        return Dec_EdgeCreate( pNode->Id - 1, 0 );
-    // previously visited node
-    if ( pNode->TravId == p->nTravIds )
-        return Dec_IntToEdge( pNode->Volume );
-    pNode->TravId = p->nTravIds;
-    // solve for children
-    eNode0 = Rwt_TravCollect_rec( p, Rwt_Regular(pNode->p0), pGraph );
-    if ( Rwt_IsComplement(pNode->p0) )    
-        eNode0.fCompl = !eNode0.fCompl;
-    eNode1 = Rwt_TravCollect_rec( p, Rwt_Regular(pNode->p1), pGraph );
-    if ( Rwt_IsComplement(pNode->p1) )    
-        eNode1.fCompl = !eNode1.fCompl;
-    // create the decomposition node(s)
-    if ( pNode->fExor )
-        eNode = Dec_GraphAddNodeXor( pGraph, eNode0, eNode1, 0 );
-    else
-        eNode = Dec_GraphAddNodeAnd( pGraph, eNode0, eNode1 );
-    // save the result
-    pNode->Volume = Dec_EdgeToInt( eNode );
-    return eNode;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/rwt/rwtMan.c b/src/aig/rwt/rwtMan.c
deleted file mode 100644
index 869043a4..00000000
--- a/src/aig/rwt/rwtMan.c
+++ /dev/null
@@ -1,358 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [rwtMan.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting package.]
-
-  Synopsis    [Rewriting manager.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: rwtMan.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "rwt.h"
-#include "deco.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-static unsigned short * s_puCanons = NULL; 
-static char *           s_pPhases = NULL; 
-static char *           s_pPerms = NULL; 
-static unsigned char *  s_pMap = NULL;
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Starts residual rewriting manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManGlobalStart()
-{ 
-    if ( s_puCanons == NULL )
-        Extra_Truth4VarNPN( &s_puCanons, &s_pPhases, &s_pPerms, &s_pMap );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Starts residual rewriting manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManGlobalStop()
-{ 
-    FREE( s_puCanons );
-    FREE( s_pPhases );
-    FREE( s_pPerms );
-    FREE( s_pMap );
-} 
-
-/**Function*************************************************************
-
-  Synopsis    [Starts rewriting manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Rwt_Man_t * Rwt_ManStart( int fPrecompute )
-{
-    Rwt_Man_t * p;
-    int clk = clock();
-clk = clock();
-    p = ALLOC( Rwt_Man_t, 1 );
-    memset( p, 0, sizeof(Rwt_Man_t) );
-    p->nFuncs = (1<<16);
-    // copy the global tables
-    Rwt_ManGlobalStart();
-    p->puCanons = s_puCanons; 
-    p->pPhases  = s_pPhases; 
-    p->pPerms   = s_pPerms; 
-    p->pMap     = s_pMap; 
-    // initialize practical NPN classes
-    p->pPractical  = Rwt_ManGetPractical( p );
-    // create the table
-    p->pTable = ALLOC( Rwt_Node_t *, p->nFuncs );
-    memset( p->pTable, 0, sizeof(Rwt_Node_t *) * p->nFuncs );
-    // create the elementary nodes
-    p->pMmNode  = Mem_FixedStart( sizeof(Rwt_Node_t) );
-    p->vForest  = Vec_PtrAlloc( 100 );
-    Rwt_ManAddVar( p, 0x0000, fPrecompute ); // constant 0
-    Rwt_ManAddVar( p, 0xAAAA, fPrecompute ); // var A
-    Rwt_ManAddVar( p, 0xCCCC, fPrecompute ); // var B
-    Rwt_ManAddVar( p, 0xF0F0, fPrecompute ); // var C
-    Rwt_ManAddVar( p, 0xFF00, fPrecompute ); // var D
-    p->nClasses = 5;
-    // other stuff
-    p->nTravIds   = 1;
-    p->pPerms4    = Extra_Permutations( 4 );
-    p->vLevNums   = Vec_IntAlloc( 50 );
-    p->vFanins    = Vec_PtrAlloc( 50 );
-    p->vFaninsCur = Vec_PtrAlloc( 50 );
-    p->vNodesTemp = Vec_PtrAlloc( 50 );
-    if ( fPrecompute )
-    {   // precompute subgraphs
-//        Rwt_ManPrecompute( p );
-//        Rwt_ManPrint( p );
-//        Rwt_ManWriteToArray( p );
-    }
-    else
-    {   // load saved subgraphs
-        Rwt_ManLoadFromArray( p, 0 );
-//        Rwt_ManPrint( p );
-        Rwt_ManPreprocess( p );
-    }
-p->timeStart = clock() - clk;
-    return p;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops rewriting manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManStop( Rwt_Man_t * p )
-{
-    if ( p->vClasses )
-    {
-        Rwt_Node_t * pNode;
-        int i, k;
-        Vec_VecForEachEntry( p->vClasses, pNode, i, k )
-            Dec_GraphFree( (Dec_Graph_t *)pNode->pNext );
-    }
-    if ( p->vClasses )  Vec_VecFree( p->vClasses );
-    Vec_PtrFree( p->vNodesTemp );
-    Vec_PtrFree( p->vForest );
-    Vec_IntFree( p->vLevNums );
-    Vec_PtrFree( p->vFanins );
-    Vec_PtrFree( p->vFaninsCur );
-    Mem_FixedStop( p->pMmNode, 0 );
-    FREE( p->pMapInv );
-    free( p->pTable );
-    free( p->pPractical );
-    free( p->pPerms4 );
-    free( p );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManPrintStats( Rwt_Man_t * p )
-{
-    int i, Counter = 0;
-    for ( i = 0; i < 222; i++ )
-        Counter += (p->nScores[i] > 0);
-
-    printf( "Rewriting statistics:\n" );
-    printf( "Total cuts tries  = %8d.\n", p->nCutsGood );
-    printf( "Bad cuts found    = %8d.\n", p->nCutsBad );
-    printf( "Total subgraphs   = %8d.\n", p->nSubgraphs );
-    printf( "Used NPN classes  = %8d.\n", Counter );
-    printf( "Nodes considered  = %8d.\n", p->nNodesConsidered );
-    printf( "Nodes rewritten   = %8d.\n", p->nNodesRewritten );
-    printf( "Calculated gain   = %8d.\n", p->nNodesGained     );
-    PRT( "Start       ", p->timeStart );
-    PRT( "Cuts        ", p->timeCut );
-    PRT( "Truth       ", p->timeTruth );
-    PRT( "Resynthesis ", p->timeRes );
-    PRT( "    Mffc    ", p->timeMffc );
-    PRT( "    Eval    ", p->timeEval );
-    PRT( "Update      ", p->timeUpdate );
-    PRT( "TOTAL       ", p->timeTotal );
-
-/*
-    printf( "The scores are:\n" );
-    for ( i = 0; i < 222; i++ )
-        if ( p->nScores[i] > 0 )
-        {
-            extern void Ivy_TruthDsdComputePrint( unsigned uTruth );
-            printf( "%3d = %8d  canon = %5d  ", i, p->nScores[i], p->pMapInv[i] );
-            Ivy_TruthDsdComputePrint( (unsigned)p->pMapInv[i] | ((unsigned)p->pMapInv[i] << 16) );
-        }
-    printf( "\n" );
-*/
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManPrintStatsFile( Rwt_Man_t * p )
-{
-    FILE * pTable;
-    pTable = fopen( "stats.txt", "a+" );
-    fprintf( pTable, "%d ", p->nCutsGood );
-    fprintf( pTable, "%d ", p->nSubgraphs );
-    fprintf( pTable, "%d ", p->nNodesRewritten );
-    fprintf( pTable, "%d", p->nNodesGained );
-    fprintf( pTable, "\n" );
-    fclose( pTable );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void * Rwt_ManReadDecs( Rwt_Man_t * p )
-{
-    return p->pGraph;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Vec_Ptr_t * Rwt_ManReadLeaves( Rwt_Man_t * p )
-{
-    return p->vFanins;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Rwt_ManReadCompl( Rwt_Man_t * p )
-{
-    return p->fCompl;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManAddTimeCuts( Rwt_Man_t * p, int Time )
-{
-    p->timeCut += Time;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManAddTimeUpdate( Rwt_Man_t * p, int Time )
-{
-    p->timeUpdate += Time;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Stops the resynthesis manager.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManAddTimeTotal( Rwt_Man_t * p, int Time )
-{
-    p->timeTotal += Time;
-}
-
-
-/**Function*************************************************************
-
-  Synopsis    [Precomputes AIG subgraphs.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_Precompute()
-{
-    Rwt_Man_t * p;
-    p = Rwt_ManStart( 1 );
-    Rwt_ManStop( p );
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-
diff --git a/src/aig/rwt/rwtUtil.c b/src/aig/rwt/rwtUtil.c
deleted file mode 100644
index af3e1893..00000000
--- a/src/aig/rwt/rwtUtil.c
+++ /dev/null
@@ -1,665 +0,0 @@
-/**CFile****************************************************************
-
-  FileName    [rwtUtil.c]
-
-  SystemName  [ABC: Logic synthesis and verification system.]
-
-  PackageName [DAG-aware AIG rewriting package.]
-
-  Synopsis    [Various utilities.]
-
-  Author      [Alan Mishchenko]
-  
-  Affiliation [UC Berkeley]
-
-  Date        [Ver. 1.0. Started - June 20, 2005.]
-
-  Revision    [$Id: rwtUtil.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "rwt.h"
-
-////////////////////////////////////////////////////////////////////////
-///                        DECLARATIONS                              ///
-////////////////////////////////////////////////////////////////////////
-
-// precomputed data
-#ifdef _WIN32
-unsigned short s_RwtPracticalClasses[];
-unsigned short s_RwtAigSubgraphs[];
-#else
-static unsigned short s_RwtPracticalClasses[];
-static unsigned short s_RwtAigSubgraphs[];
-#endif
-
-////////////////////////////////////////////////////////////////////////
-///                     FUNCTION DEFINITIONS                         ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
-  Synopsis    [Adds the node to the end of the list.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ListAddToTail( Rwt_Node_t ** ppList, Rwt_Node_t * pNode )
-{
-    Rwt_Node_t * pTemp;
-    // find the last one
-    for ( pTemp = *ppList; pTemp; pTemp = pTemp->pNext )
-        ppList = &pTemp->pNext;
-    // attach at the end
-    *ppList = pNode;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Rwt_Node_t * Rwt_ManAddVar( Rwt_Man_t * p, unsigned uTruth, int fPrecompute )
-{
-    Rwt_Node_t * pNew;
-    pNew = (Rwt_Node_t *)Mem_FixedEntryFetch( p->pMmNode );
-    pNew->Id     = p->vForest->nSize;
-    pNew->TravId = 0;
-    pNew->uTruth = uTruth;
-    pNew->Level  = 0;
-    pNew->Volume = 0;
-    pNew->fUsed  = 1;
-    pNew->fExor  = 0;
-    pNew->p0     = NULL;
-    pNew->p1     = NULL;    
-    pNew->pNext  = NULL;
-    Vec_PtrPush( p->vForest, pNew );
-    if ( fPrecompute )
-        Rwt_ListAddToTail( p->pTable + uTruth, pNew );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-Rwt_Node_t * Rwt_ManAddNode( Rwt_Man_t * p, Rwt_Node_t * p0, Rwt_Node_t * p1, int fExor, int Level, int Volume )
-{
-    Rwt_Node_t * pNew;
-    unsigned uTruth;
-    // compute truth table, leve, volume
-    p->nConsidered++;
-    if ( fExor )
-        uTruth = (p0->uTruth ^ p1->uTruth);
-    else
-        uTruth = (Rwt_IsComplement(p0)? ~Rwt_Regular(p0)->uTruth : Rwt_Regular(p0)->uTruth) & 
-                 (Rwt_IsComplement(p1)? ~Rwt_Regular(p1)->uTruth : Rwt_Regular(p1)->uTruth) & 0xFFFF;
-    // create the new node
-    pNew = (Rwt_Node_t *)Mem_FixedEntryFetch( p->pMmNode );
-    pNew->Id     = p->vForest->nSize;
-    pNew->TravId = 0;
-    pNew->uTruth = uTruth;
-    pNew->Level  = Level;
-    pNew->Volume = Volume;
-    pNew->fUsed  = 0;
-    pNew->fExor  = fExor;
-    pNew->p0     = p0;
-    pNew->p1     = p1;
-    pNew->pNext  = NULL;
-    Vec_PtrPush( p->vForest, pNew );
-    // do not add if the node is not essential
-    if ( uTruth != p->puCanons[uTruth] )
-        return pNew;
-
-    // add to the list
-    p->nAdded++;
-    if ( p->pTable[uTruth] == NULL )
-        p->nClasses++;
-    Rwt_ListAddToTail( p->pTable + uTruth, pNew );
-    return pNew;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_Trav_rec( Rwt_Man_t * p, Rwt_Node_t * pNode, int * pVolume )
-{
-    if ( pNode->fUsed || pNode->TravId == p->nTravIds )
-        return;
-    pNode->TravId = p->nTravIds;
-    (*pVolume)++;
-    if ( pNode->fExor )
-        (*pVolume)++;
-    Rwt_Trav_rec( p, Rwt_Regular(pNode->p0), pVolume );
-    Rwt_Trav_rec( p, Rwt_Regular(pNode->p1), pVolume );
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManIncTravId( Rwt_Man_t * p )
-{
-    Rwt_Node_t * pNode;
-    int i;
-    if ( p->nTravIds++ < 0x8FFFFFFF )
-        return;
-    Vec_PtrForEachEntry( p->vForest, pNode, i )
-        pNode->TravId = 0;
-    p->nTravIds = 1;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Adds one node.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-int Rwt_ManNodeVolume( Rwt_Man_t * p, Rwt_Node_t * p0, Rwt_Node_t * p1 )
-{
-    int Volume = 0;
-    Rwt_ManIncTravId( p );
-    Rwt_Trav_rec( p, p0, &Volume );
-    Rwt_Trav_rec( p, p1, &Volume );
-    return Volume;
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Loads data.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-void Rwt_ManLoadFromArray( Rwt_Man_t * p, int fVerbose )
-{
-    unsigned short * pArray = s_RwtAigSubgraphs;
-    Rwt_Node_t * p0, * p1;
-    unsigned Entry0, Entry1;
-    int Level, Volume, nEntries, fExor;
-    int i, clk = clock();
-
-    // reconstruct the forest
-    for ( i = 0; ; i++ )
-    {
-        Entry0 = pArray[2*i + 0];
-        Entry1 = pArray[2*i + 1];
-        if ( Entry0 == 0 && Entry1 == 0 )
-            break;
-        // get EXOR flag
-        fExor = (Entry0 & 1);
-        Entry0 >>= 1;
-        // get the nodes
-        p0 = p->vForest->pArray[Entry0 >> 1];
-        p1 = p->vForest->pArray[Entry1 >> 1];
-        // compute the level and volume of the new nodes
-        Level  = 1 + RWT_MAX( p0->Level, p1->Level );
-        Volume = 1 + Rwt_ManNodeVolume( p, p0, p1 );
-        // set the complemented attributes
-        p0 = Rwt_NotCond( p0, (Entry0 & 1) );
-        p1 = Rwt_NotCond( p1, (Entry1 & 1) );
-        // add the node
-//        Rwt_ManTryNode( p, p0, p1, Level, Volume );
-        Rwt_ManAddNode( p, p0, p1, fExor, Level, Volume + fExor );
-    }
-    nEntries = i - 1;
-    if ( fVerbose )
-    {
-        printf( "The number of classes = %d. Canonical nodes = %d.\n", p->nClasses, p->nAdded );
-        printf( "The number of nodes loaded = %d.  ", nEntries );  PRT( "Loading", clock() - clk );
-    }
-}
-
-/**Function*************************************************************
-
-  Synopsis    [Create practical classes.]
-
-  Description []
-               
-  SideEffects []
-
-  SeeAlso     []
-
-***********************************************************************/
-char * Rwt_ManGetPractical( Rwt_Man_t * p )
-{
-    char * pPractical;
-    int i;
-    pPractical = ALLOC( char, p->nFuncs );
-    memset( pPractical, 0, sizeof(char) * p->nFuncs );
-    pPractical[0] = 1;
-    for ( i = 1; ; i++ )
-    {
-        if ( s_RwtPracticalClasses[i] == 0 )
-            break;
-        pPractical[ s_RwtPracticalClasses[i] ] = 1;
-    }
-    return pPractical;
-}
-
-////////////////////////////////////////////////////////////////////////
-///                       END OF FILE                                ///
-////////////////////////////////////////////////////////////////////////
-
-// the following 135 practical NPN classes of 4-variable functions were computed
-// by considering all 4-input cuts appearing in IWLS, MCNC, and ISCAS benchmarks
-static unsigned short s_RwtPracticalClasses[] = 
-{
-    0x0000, 0x0001, 0x0003, 0x0006, 0x0007, 0x000f, 0x0016, 0x0017, 0x0018, 0x0019, 0x001b, 
-    0x001e, 0x001f, 0x003c, 0x003d, 0x003f, 0x0069, 0x006b, 0x006f, 0x007e, 0x007f, 0x00ff, 
-    0x0116, 0x0118, 0x0119, 0x011a, 0x011b, 0x011e, 0x011f, 0x012c, 0x012d, 0x012f, 0x013c, 
-    0x013d, 0x013e, 0x013f, 0x0168, 0x0169, 0x016f, 0x017f, 0x0180, 0x0181, 0x0182, 0x0183, 
-    0x0186, 0x0189, 0x018b, 0x018f, 0x0198, 0x0199, 0x019b, 0x01a8, 0x01a9, 0x01aa, 0x01ab, 
-    0x01ac, 0x01ad, 0x01ae, 0x01af, 0x01bf, 0x01e9, 0x01ea, 0x01eb, 0x01ee, 0x01ef, 0x01fe, 
-    0x033c, 0x033d, 0x033f, 0x0356, 0x0357, 0x0358, 0x0359, 0x035a, 0x035b, 0x035f, 0x0368, 
-    0x0369, 0x036c, 0x036e, 0x037d, 0x03c0, 0x03c1, 0x03c3, 0x03c7, 0x03cf, 0x03d4, 0x03d5, 
-    0x03d7, 0x03d8, 0x03d9, 0x03dc, 0x03dd, 0x03de, 0x03fc, 0x0660, 0x0661, 0x0666, 0x0669, 
-    0x066f, 0x0676, 0x067e, 0x0690, 0x0696, 0x0697, 0x069f, 0x06b1, 0x06b6, 0x06f0, 0x06f2, 
-    0x06f6, 0x06f9, 0x0776, 0x0778, 0x07b0, 0x07b1, 0x07b4, 0x07bc, 0x07f0, 0x07f2, 0x07f8, 
-    0x0ff0, 0x1683, 0x1696, 0x1698, 0x169e, 0x16e9, 0x178e, 0x17e8, 0x18e7, 0x19e6, 0x1be4, 
-    0x1ee1, 0x3cc3, 0x6996, 0x0000
-};
-
-static unsigned short s_RwtAigSubgraphs[] = 
-{
-    0x0008,0x0002, 0x000a,0x0002, 0x0008,0x0003, 0x000a,0x0003, 0x0009,0x0002, 
-    0x000c,0x0002, 0x000e,0x0002, 0x000c,0x0003, 0x000e,0x0003, 0x000d,0x0002, 
-    0x000c,0x0004, 0x000e,0x0004, 0x000c,0x0005, 0x000e,0x0005, 0x000d,0x0004, 
-    0x0010,0x0002, 0x0012,0x0002, 0x0010,0x0003, 0x0012,0x0003, 0x0011,0x0002, 
-    0x0010,0x0004, 0x0012,0x0004, 0x0010,0x0005, 0x0012,0x0005, 0x0011,0x0004, 
-    0x0010,0x0006, 0x0012,0x0006, 0x0010,0x0007, 0x0012,0x0007, 0x0011,0x0006, 
-    0x0016,0x0005, 0x0014,0x0006, 0x0016,0x0006, 0x0014,0x0007, 0x0016,0x0007, 
-    0x0015,0x0006, 0x0014,0x0008, 0x0016,0x0008, 0x0014,0x0009, 0x0016,0x0009, 
-    0x0015,0x0008, 0x0018,0x0006, 0x001a,0x0006, 0x0018,0x0007, 0x001a,0x0007, 
-    0x0019,0x0006, 0x0018,0x0009, 0x001a,0x0009, 0x0019,0x0008, 0x001e,0x0005, 
-    0x001c,0x0006, 0x001e,0x0006, 0x001c,0x0007, 0x001e,0x0007, 0x001d,0x0006, 
-    0x001c,0x0008, 0x001e,0x0008, 0x001c,0x0009, 0x001e,0x0009, 0x001d,0x0008, 
-    0x0020,0x0006, 0x0022,0x0006, 0x0020,0x0007, 0x0022,0x0007, 0x0021,0x0006, 
-    0x0020,0x0008, 0x0022,0x0008, 0x0020,0x0009, 0x0022,0x0009, 0x0021,0x0008, 
-    0x0024,0x0006, 0x0026,0x0006, 0x0024,0x0007, 0x0026,0x0007, 0x0025,0x0006, 
-    0x0026,0x0008, 0x0024,0x0009, 0x0026,0x0009, 0x0025,0x0008, 0x0028,0x0004, 
-    0x002a,0x0004, 0x0028,0x0005, 0x002a,0x0007, 0x0028,0x0008, 0x002a,0x0009, 
-    0x0029,0x0008, 0x002a,0x000b, 0x0029,0x000a, 0x002a,0x000f, 0x0029,0x000e, 
-    0x002a,0x0011, 0x002a,0x0013, 0x002c,0x0004, 0x002e,0x0004, 0x002c,0x0005, 
-    0x002c,0x0009, 0x002e,0x0009, 0x002d,0x0008, 0x002d,0x000c, 0x002e,0x000f, 
-    0x002e,0x0011, 0x002e,0x0012, 0x0030,0x0004, 0x0032,0x0007, 0x0032,0x0009, 
-    0x0031,0x0008, 0x0032,0x000b, 0x0032,0x000d, 0x0032,0x000f, 0x0031,0x000e, 
-    0x0032,0x0013, 0x0034,0x0004, 0x0036,0x0004, 0x0034,0x0005, 0x0036,0x0005, 
-    0x0035,0x0004, 0x0036,0x0008, 0x0034,0x0009, 0x0036,0x0009, 0x0035,0x0008, 
-    0x0036,0x000b, 0x0036,0x000d, 0x0036,0x0011, 0x0035,0x0010, 0x0036,0x0013, 
-    0x0038,0x0004, 0x0039,0x0004, 0x0038,0x0009, 0x003a,0x0009, 0x0039,0x0008, 
-    0x0038,0x000b, 0x003a,0x000b, 0x003a,0x000d, 0x003a,0x0011, 0x003a,0x0012, 
-    0x0038,0x0013, 0x003a,0x0013, 0x003c,0x0002, 0x003e,0x0002, 0x003c,0x0003, 
-    0x003e,0x0005, 0x003e,0x0007, 0x003c,0x0008, 0x003e,0x0008, 0x003c,0x0009, 
-    0x003e,0x0009, 0x003d,0x0008, 0x003e,0x000d, 0x003e,0x0011, 0x003e,0x0013, 
-    0x003e,0x0017, 0x003e,0x001b, 0x003e,0x001d, 0x0040,0x0002, 0x0042,0x0002, 
-    0x0042,0x0005, 0x0041,0x0006, 0x0042,0x0008, 0x0041,0x0008, 0x0042,0x000d, 
-    0x0042,0x0011, 0x0042,0x0015, 0x0042,0x0019, 0x0042,0x001b, 0x0042,0x001c, 
-    0x0041,0x001c, 0x0044,0x0002, 0x0046,0x0003, 0x0045,0x0004, 0x0046,0x0007, 
-    0x0045,0x0008, 0x0046,0x000b, 0x0046,0x000f, 0x0046,0x0013, 0x0045,0x0012, 
-    0x0046,0x0017, 0x0046,0x001b, 0x0046,0x0021, 0x0048,0x0002, 0x004a,0x0002, 
-    0x0048,0x0003, 0x004a,0x0003, 0x0049,0x0002, 0x0048,0x0008, 0x004a,0x0008, 
-    0x0048,0x0009, 0x004a,0x0009, 0x0049,0x0008, 0x004a,0x000b, 0x004a,0x000f, 
-    0x004a,0x0011, 0x004a,0x0012, 0x004a,0x0013, 0x004a,0x0015, 0x004a,0x0019, 
-    0x004a,0x001b, 0x004a,0x001d, 0x004c,0x0002, 0x004c,0x0003, 0x004d,0x0002, 
-    0x004c,0x0008, 0x004e,0x0008, 0x004c,0x0009, 0x004e,0x0009, 0x004d,0x0008, 
-    0x004c,0x000b, 0x004e,0x000b, 0x004c,0x000f, 0x004e,0x000f, 0x004e,0x0011, 
-    0x004c,0x0012, 0x004c,0x0013, 0x004e,0x0013, 0x004e,0x0015, 0x004c,0x0017, 
-    0x004e,0x0019, 0x004c,0x001b, 0x004e,0x001b, 0x004c,0x001c, 0x004c,0x001d, 
-    0x004e,0x001d, 0x0050,0x0004, 0x0052,0x0004, 0x0050,0x0006, 0x0052,0x0009, 
-    0x0052,0x000d, 0x0052,0x000f, 0x0052,0x0013, 0x0052,0x0017, 0x0052,0x0019, 
-    0x0052,0x001d, 0x0052,0x001f, 0x0052,0x0021, 0x0052,0x0023, 0x0052,0x0024, 
-    0x0052,0x0025, 0x0051,0x0024, 0x0052,0x0027, 0x0054,0x0004, 0x0056,0x0004, 
-    0x0054,0x0005, 0x0056,0x0006, 0x0054,0x0007, 0x0056,0x0011, 0x0056,0x001b, 
-    0x0056,0x001e, 0x0054,0x001f, 0x0056,0x001f, 0x0056,0x0020, 0x0054,0x0021, 
-    0x0055,0x0020, 0x0056,0x0024, 0x0054,0x0025, 0x0056,0x0025, 0x0055,0x0024, 
-    0x0054,0x0027, 0x0056,0x0027, 0x0055,0x0026, 0x005a,0x0007, 0x005a,0x0009, 
-    0x005a,0x000b, 0x005a,0x0015, 0x005a,0x001f, 0x0059,0x0020, 0x0058,0x0024, 
-    0x005a,0x0024, 0x005a,0x0027, 0x0059,0x0026, 0x005c,0x0004, 0x005e,0x0004, 
-    0x005c,0x0005, 0x005e,0x0006, 0x005c,0x0007, 0x005d,0x0006, 0x005e,0x000d, 
-    0x005e,0x0013, 0x005e,0x0017, 0x005c,0x001f, 0x005d,0x001e, 0x005e,0x0020, 
-    0x005e,0x0021, 0x005e,0x0022, 0x005e,0x0023, 0x005c,0x0024, 0x005e,0x0024, 
-    0x005c,0x0025, 0x005e,0x0025, 0x005d,0x0024, 0x005e,0x0026, 0x005e,0x0027, 
-    0x0062,0x0004, 0x0061,0x0004, 0x0062,0x0006, 0x0061,0x0006, 0x0060,0x000f, 
-    0x0060,0x0013, 0x0062,0x0013, 0x0060,0x0019, 0x0062,0x001c, 0x0060,0x001d, 
-    0x0062,0x001d, 0x0062,0x001f, 0x0060,0x0021, 0x0060,0x0023, 0x0062,0x0024, 
-    0x0060,0x0027, 0x0061,0x0026, 0x0064,0x0002, 0x0066,0x0002, 0x0064,0x0006, 
-    0x0066,0x0007, 0x0066,0x0009, 0x0066,0x000d, 0x0066,0x0013, 0x0066,0x0015, 
-    0x0066,0x0017, 0x0066,0x0019, 0x0066,0x001a, 0x0065,0x001a, 0x0066,0x001f, 
-    0x0066,0x0023, 0x0066,0x0027, 0x0066,0x002f, 0x0066,0x0030, 0x006a,0x0002, 
-    0x0068,0x0003, 0x0068,0x0006, 0x006a,0x0006, 0x006a,0x0011, 0x0068,0x0016, 
-    0x0068,0x0017, 0x006a,0x0017, 0x006a,0x001a, 0x006a,0x001b, 0x006a,0x0025, 
-    0x006a,0x002d, 0x006e,0x0003, 0x006e,0x0007, 0x006e,0x0009, 0x006e,0x000b, 
-    0x006e,0x0015, 0x006e,0x0016, 0x006e,0x0017, 0x006c,0x001a, 0x006e,0x001a, 
-    0x006e,0x001f, 0x006e,0x002b, 0x006e,0x0035, 0x0070,0x0002, 0x0070,0x0003, 
-    0x0072,0x0006, 0x0070,0x0007, 0x0071,0x0006, 0x0072,0x000b, 0x0072,0x000f, 
-    0x0072,0x0013, 0x0070,0x0015, 0x0071,0x0014, 0x0072,0x0017, 0x0072,0x0018, 
-    0x0070,0x0019, 0x0072,0x0019, 0x0070,0x001a, 0x0070,0x001b, 0x0072,0x001b, 
-    0x0071,0x001a, 0x0072,0x0021, 0x0072,0x0029, 0x0076,0x0002, 0x0076,0x0003, 
-    0x0075,0x0002, 0x0076,0x0006, 0x0074,0x0007, 0x0076,0x0007, 0x0075,0x0006, 
-    0x0076,0x000d, 0x0076,0x0011, 0x0076,0x0013, 0x0075,0x0014, 0x0076,0x0019, 
-    0x0076,0x001a, 0x0076,0x001b, 0x0075,0x001c, 0x0074,0x0023, 0x0075,0x0022, 
-    0x0074,0x0026, 0x0076,0x0026, 0x0074,0x0027, 0x0076,0x002b, 0x0076,0x002f, 
-    0x0078,0x0002, 0x0078,0x0004, 0x007a,0x0004, 0x007a,0x0005, 0x0079,0x0004, 
-    0x007a,0x0009, 0x007a,0x000a, 0x007a,0x000b, 0x007a,0x000d, 0x007a,0x000f, 
-    0x007a,0x0010, 0x007a,0x0011, 0x007a,0x0012, 0x007a,0x0013, 0x007a,0x0017, 
-    0x007a,0x001b, 0x007a,0x0021, 0x007a,0x0027, 0x007a,0x002b, 0x007a,0x002f, 
-    0x007a,0x0030, 0x0079,0x0034, 0x007a,0x0039, 0x007a,0x003a, 0x007e,0x0002, 
-    0x007c,0x0004, 0x007e,0x0004, 0x007e,0x000c, 0x007c,0x000d, 0x007e,0x0011, 
-    0x007e,0x0013, 0x007e,0x001b, 0x007e,0x0025, 0x007e,0x002d, 0x007e,0x0037, 
-    0x0082,0x0003, 0x0082,0x0005, 0x0082,0x0009, 0x0082,0x000b, 0x0080,0x0010, 
-    0x0082,0x0010, 0x0082,0x0012, 0x0082,0x0015, 0x0082,0x001f, 0x0082,0x002b, 
-    0x0082,0x0035, 0x0082,0x0039, 0x0082,0x003f, 0x0084,0x0002, 0x0086,0x0002, 
-    0x0084,0x0003, 0x0086,0x0003, 0x0085,0x0002, 0x0086,0x0004, 0x0084,0x0005, 
-    0x0085,0x0004, 0x0086,0x000a, 0x0084,0x000b, 0x0085,0x000a, 0x0086,0x000d, 
-    0x0086,0x000e, 0x0086,0x000f, 0x0084,0x0010, 0x0084,0x0011, 0x0086,0x0011, 
-    0x0085,0x0010, 0x0084,0x0012, 0x0084,0x0013, 0x0086,0x0013, 0x0085,0x0012, 
-    0x0086,0x0019, 0x0086,0x0023, 0x0086,0x0029, 0x0086,0x0033, 0x0086,0x0039, 
-    0x008a,0x0003, 0x0089,0x0002, 0x0088,0x0004, 0x008a,0x0004, 0x0088,0x0005, 
-    0x0089,0x0004, 0x008a,0x000b, 0x008a,0x0010, 0x0088,0x0011, 0x008a,0x0011, 
-    0x0089,0x0010, 0x0088,0x0012, 0x008a,0x0012, 0x0089,0x0012, 0x008a,0x0017, 
-    0x008a,0x001b, 0x0089,0x0020, 0x008a,0x0025, 0x0088,0x0027, 0x008a,0x002b, 
-    0x008a,0x002f, 0x008a,0x0039, 0x0088,0x003a, 0x008d,0x0044, 0x0092,0x0009, 
-    0x0092,0x0025, 0x0092,0x0029, 0x0092,0x002d, 0x0092,0x0033, 0x0092,0x0037, 
-    0x0092,0x003d, 0x0092,0x0041, 0x0095,0x0002, 0x0095,0x0004, 0x0095,0x0010, 
-    0x0095,0x0012, 0x0096,0x0021, 0x0096,0x0029, 0x0095,0x002e, 0x0096,0x0030, 
-    0x0096,0x0033, 0x0096,0x003a, 0x0096,0x0043, 0x009a,0x0008, 0x009a,0x0009, 
-    0x0099,0x0008, 0x009a,0x0011, 0x009a,0x0023, 0x009a,0x0033, 0x009a,0x003d, 
-    0x009a,0x0044, 0x009a,0x0045, 0x0099,0x0044, 0x009d,0x0002, 0x009e,0x0008, 
-    0x009c,0x0009, 0x009e,0x0009, 0x009d,0x0008, 0x009e,0x0011, 0x009d,0x0010, 
-    0x009e,0x001f, 0x009e,0x003f, 0x00a0,0x0009, 0x00a0,0x0011, 0x00a2,0x0030, 
-    0x00a2,0x0033, 0x00a6,0x0006, 0x00a6,0x0007, 0x00a6,0x0011, 0x00a6,0x0044, 
-    0x00a6,0x004b, 0x00aa,0x0007, 0x00aa,0x0015, 0x00ae,0x0006, 0x00ae,0x0011, 
-    0x00ae,0x001b, 0x00ae,0x0025, 0x00ae,0x003d, 0x00ae,0x0041, 0x00ae,0x0043, 
-    0x00ae,0x0045, 0x00b2,0x0006, 0x00b0,0x0007, 0x00b1,0x0006, 0x00b2,0x0017, 
-    0x00b1,0x0016, 0x00b0,0x0019, 0x00b2,0x0021, 0x00b2,0x003d, 0x00b5,0x004a, 
-    0x00ba,0x0009, 0x00ba,0x000f, 0x00bc,0x0009, 0x00be,0x0009, 0x00be,0x000f, 
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-    0x064c,0x02b3, 0x0651,0x0062, 0x0650,0x0217, 0x0651,0x02ac, 0x0650,0x02d6, 
-    0x0655,0x0042, 0x065d,0x0042, 0x0664,0x02b1, 0x0664,0x02ce, 0x0669,0x0238, 
-    0x066d,0x002a, 0x066c,0x0039, 0x066d,0x01f6, 0x066c,0x0213, 0x066c,0x022e, 
-    0x066d,0x02a2, 0x066c,0x02e1, 0x0671,0x002a, 0x0670,0x0030, 0x0670,0x0067, 
-    0x0670,0x00c9, 0x0670,0x01eb, 0x0670,0x01ef, 0x0670,0x02c3, 0x0675,0x0020, 
-    0x0678,0x0133, 0x0678,0x0148, 0x067c,0x0027, 0x0681,0x023a, 0x0684,0x0021, 
-    0x0684,0x00bf, 0x0684,0x00d0, 0x0689,0x01fc, 0x068e,0x0162, 0x068e,0x0183, 
-    0x0691,0x0200, 0x0696,0x0023, 0x0696,0x00e0, 0x0696,0x00fb, 0x0696,0x0268, 
-    0x069a,0x0282, 0x069d,0x007e, 0x06a2,0x004b, 0x06a2,0x023e, 0x06a2,0x02dc, 
-    0x06a6,0x0097, 0x06aa,0x02b1, 0x06aa,0x02ce, 0x06ae,0x0039, 0x06ae,0x0213, 
-    0x06ae,0x022e, 0x06ae,0x02e1, 0x06b2,0x0162, 0x06b2,0x0183, 0x06b6,0x0023, 
-    0x06b6,0x00e0, 0x06b6,0x00fb, 0x06ba,0x008f, 0x06ba,0x01e4, 0x06be,0x034b, 
-    0x06c1,0x0086, 0x06c1,0x009a, 0x06c1,0x00ec, 0x06c1,0x0172, 0x06c6,0x01da, 
-    0x06c6,0x0280, 0x06c6,0x0351, 0x06ce,0x008f, 0x06d2,0x01e3, 0x06d2,0x0287, 
-    0x06d2,0x0353, 0x06d6,0x027a, 0x06d6,0x029b, 0x06da,0x0033, 0x06da,0x01ce, 
-    0x06da,0x01f1, 0x06de,0x0133, 0x06de,0x0148, 0x06e2,0x0021, 0x06e2,0x00bf, 
-    0x06e2,0x00d0, 0x06e5,0x023a, 0x06e9,0x0004, 0x06ee,0x028c, 0x06ee,0x0338, 
-    0x06f2,0x0328, 0x06f2,0x0330, 0x06f4,0x0005, 0x06f9,0x01e0, 0x06fe,0x0328, 
-    0x06fe,0x0330, 0x0702,0x003d, 0x0702,0x00f3, 0x0702,0x0330, 0x0704,0x0003, 
-    0x070a,0x003d, 0x070a,0x00f3, 0x070a,0x01d4, 0x070a,0x01f3, 0x070a,0x0330, 
-    0x0711,0x032a, 0x0711,0x032e, 0x0716,0x003d, 0x0718,0x0205, 0x0718,0x0282, 
-    0x071e,0x00f3, 0x0720,0x01dc, 0x0720,0x02a5, 0x0726,0x0324, 0x072a,0x028a, 
-    0x072a,0x02a7, 0x0729,0x031c, 0x0729,0x032a, 0x072e,0x003d, 0x072e,0x00f9, 
-    0x072e,0x022d, 0x072e,0x0248, 0x072e,0x02e4, 0x0730,0x003d, 0x0730,0x0247, 
-    0x0730,0x02e3, 0x0730,0x0324, 0x0732,0x0324, 0x0739,0x032e, 0x073e,0x003d, 
-    0x0740,0x003d, 0x0744,0x027a, 0x0744,0x029b, 0x0748,0x0033, 0x0748,0x01ce, 
-    0x0748,0x01f1, 0x074c,0x0162, 0x074c,0x0183, 0x0750,0x0023, 0x0750,0x00e0, 
-    0x0750,0x00fb, 0x0755,0x0246, 0x075a,0x0095, 0x075a,0x0397, 0x075d,0x0004, 
-    0x076a,0x03b3, 0x076d,0x0002, 0x0772,0x02fb, 0x0772,0x0301, 0x0772,0x0315, 
-    0x0772,0x0397, 0x0776,0x008f, 0x077e,0x0027, 0x078a,0x00a1, 0x0792,0x009d, 
-    0x0792,0x00c3, 0x0792,0x02fb, 0x0792,0x0301, 0x0792,0x0315, 0x0792,0x03bd, 
-    0x0796,0x0027, 0x0796,0x024f, 0x079e,0x009d, 0x07a6,0x009d, 0x07a6,0x02fb, 
-    0x07a6,0x0301, 0x07a6,0x0315, 0x07a6,0x03bd, 0x07aa,0x0027, 0x07aa,0x024f, 
-    0x07ae,0x009d, 0x07b9,0x004e, 0x07b8,0x0087, 0x07b8,0x00ed, 0x07b8,0x0173, 
-    0x07b8,0x0197, 0x07b9,0x021a, 0x07b9,0x02b8, 0x07b9,0x0364, 0x07be,0x0029, 
-    0x07be,0x0030, 0x07c0,0x017b, 0x07c6,0x017b, 0x07c8,0x00f3, 0x07ce,0x00f3, 
-    0x07d0,0x008f, 0x07d6,0x008f, 0x07d9,0x01e8, 0x07dd,0x0292, 0x07e2,0x0053, 
-    0x07e6,0x008f, 0x07e6,0x00f3, 0x07e6,0x017b, 0x07e8,0x0029, 0x07e8,0x0030, 
-    0x07ec,0x0021, 0x07ec,0x02ad, 0x07f2,0x0181, 0x07f2,0x0315, 0x07f4,0x0021, 
-    0x07f8,0x020f, 0x07fd,0x002e, 0x0800,0x008f, 0x0805,0x0006, 0x0809,0x03c2, 
-    0x080d,0x0084, 0x0812,0x0009, 0x0811,0x0008, 0x0812,0x00f3, 0x0812,0x00f9, 
-    0x0812,0x017b, 0x0812,0x0181, 0x0814,0x0033, 0x0818,0x0023, 0x081c,0x0285, 
-    0x0826,0x03bd, 0x082c,0x008f, 0x082c,0x017b, 0x0832,0x0043, 0x0832,0x011b, 
-    0x0832,0x01b3, 0x0832,0x01c3, 0x0835,0x032a, 0x0838,0x0085, 0x0839,0x032a, 
-    0x083e,0x0049, 0x083d,0x0084, 0x083e,0x02fb, 0x083e,0x0301, 0x083e,0x0315, 
-    0x083e,0x0397, 0x0842,0x0009, 0x0841,0x0008, 0x0844,0x0009, 0x0846,0x008f, 
-    0x084a,0x0033, 0x084e,0x0285, 0x0851,0x009a, 0x0856,0x00a1, 0x0859,0x031c, 
-    0x085d,0x00b2, 0x0861,0x0012, 0x0861,0x02cc, 0x0865,0x0058, 0x0865,0x007e, 
-    0x0869,0x004a, 0x0871,0x0010, 0x0876,0x003d, 0x0879,0x032c, 0x087e,0x0089, 
-    0x0882,0x0229, 0x0882,0x022d, 0x0882,0x02c7, 0x0882,0x02cb, 0x0886,0x0021, 
-    0x0886,0x02ad, 0x0885,0x0356, 0x088a,0x0017, 0x088a,0x020f, 0x0889,0x0354, 
-    0x088d,0x009c, 0x0892,0x0089, 0x0895,0x0246, 0x089a,0x03bd, 0x089e,0x008f, 
-    0x089e,0x02f9, 0x089e,0x0313, 0x08a1,0x032a, 0x08a6,0x0053, 0x08a6,0x0095, 
-    0x08a6,0x0397, 0x08a8,0x017b, 0x08ad,0x031a, 0x08b2,0x017b, 0x08b4,0x00f3, 
-    0x08b5,0x02a0, 0x08b8,0x0089, 0x08c1,0x0024, 0x08c4,0x00f3, 0x08c9,0x007e, 
-    0x08cd,0x007c, 0x08cd,0x0222, 0x08cd,0x0294, 0x08d1,0x003a, 0x08d6,0x0009, 
-    0x08d9,0x003a, 0x08dc,0x001f, 0x08e0,0x008f, 0x08e0,0x017b, 0x08e4,0x0009, 
-    0x08e8,0x01ed, 0x08ed,0x031c, 0x08f2,0x003d, 0x08f6,0x008f, 0x08f6,0x017b, 
-    0x08fa,0x0009, 0x08fe,0x003d, 0x0902,0x01e9, 0x0904,0x01e9, 0x0904,0x0381, 
-    0x090a,0x03b1, 0x090d,0x031a, 0x0910,0x0299, 0x0914,0x034b, 0x0919,0x0008, 
-    0x091c,0x0033, 0x091c,0x003d, 0x0920,0x0027, 0x0924,0x0027, 0x0924,0x01fb, 
-    0x092a,0x01ce, 0x092a,0x01f1, 0x092d,0x031c, 0x0930,0x001f, 0x0936,0x00c5, 
-    0x0938,0x00c5, 0x0938,0x0381, 0x093c,0x001b, 0x0942,0x017d, 0x094a,0x0027, 
-    0x094e,0x0027, 0x094e,0x01fb, 0x0952,0x03b1, 0x095a,0x0029, 0x095a,0x0030, 
-    0x095d,0x0030, 0x0961,0x0030, 0x0966,0x02f9, 0x0966,0x0313, 0x0968,0x02eb, 
-    0x096d,0x0008, 0x0970,0x017b, 0x0974,0x0033, 0x0979,0x0150, 0x097d,0x009a, 
-    0x0982,0x0293, 0x0984,0x0293, 0x0984,0x0379, 0x098a,0x02eb, 0x098e,0x0009, 
-    0x0992,0x003d, 0x0996,0x003d, 0x0999,0x0062, 0x099e,0x003d, 0x09a0,0x0027, 
-    0x09a5,0x0144, 0x09a8,0x02b5, 0x09ae,0x008f, 0x09ae,0x009d, 0x09b2,0x004d, 
-    0x09b2,0x0053, 0x09b2,0x00c3, 0x09b2,0x013d, 0x09b2,0x01c5, 0x09b2,0x0271, 
-    0x09b4,0x0025, 0x09ba,0x0033, 0x09ba,0x0079, 0x09bc,0x0015, 0x09c2,0x013f, 
-    0x09c4,0x013f, 0x09c4,0x0379, 0x09ca,0x02b5, 0x09cd,0x0006, 0x09da,0x0009, 
-    0x09d9,0x0008, 0x09dc,0x000b, 0x09dc,0x004f, 0x09dd,0x0086, 0x09e0,0x0009, 
-    0x09e6,0x00a1, 0x09e8,0x0009, 0x09ed,0x0086, 0x09f2,0x001f, 0x09f2,0x002f, 
-    0x09f2,0x0049, 0x09f2,0x006f, 0x09f2,0x0085, 0x09f2,0x0091, 0x09f2,0x00a9, 
-    0x09f2,0x00d3, 0x09f2,0x00d7, 0x09f2,0x011d, 0x09f2,0x0121, 0x09f2,0x0235, 
-    0x09f2,0x0393, 0x09f6,0x0324, 0x09f8,0x0049, 0x09f8,0x00a9, 0x09f8,0x011d, 
-    0x09fe,0x001f, 0x09fe,0x0029, 0x09fe,0x0033, 0x09fe,0x003d, 0x09fe,0x0085, 
-    0x09fe,0x008f, 0x09fe,0x00d3, 0x0a00,0x003d, 0x0a06,0x012d, 0x0a0e,0x00b3, 
-    0x0a10,0x000b, 0x0a10,0x0387, 0x0a16,0x0059, 0x0a18,0x0009, 0x0a1e,0x0043, 
-    0x0a24,0x0085, 0x0a2a,0x0009, 0x0a2d,0x0008, 0x0a32,0x028a, 0x0a32,0x02a7, 
-    0x0a31,0x031c, 0x0a35,0x032e, 0x0a39,0x0006, 0x0a3a,0x0105, 0x0a3a,0x024f, 
-    0x0a3c,0x0299, 0x0a42,0x01ed, 0x0a46,0x0299, 0x0a48,0x01ed, 0x0a4c,0x0059, 
-    0x0a52,0x000b, 0x0a52,0x0387, 0x0a56,0x000b, 0x0a5e,0x0009, 0x0a60,0x003d, 
-    0x0a66,0x0105, 0x0a6a,0x0195, 0x0a6c,0x000b, 0x0a76,0x0053, 0x0a78,0x0009, 
-    0x0a7a,0x008f, 0x0a82,0x0299, 0x0a86,0x01ed, 0x0a8a,0x0027, 0x0a8e,0x004b, 
-    0x0a92,0x003d, 0x0a95,0x0322, 0x0a99,0x0038, 0x0a99,0x0090, 0x0a9c,0x0061, 
-    0x0a9c,0x00c7, 0x0a9c,0x012d, 0x0a9c,0x016f, 0x0a9c,0x017d, 0x0a9c,0x02c9, 
-    0x0a9c,0x0383, 0x0aa1,0x0010, 0x0aa4,0x00b3, 0x0aa8,0x002f, 0x0aac,0x0027, 
-    0x0ab0,0x004b, 0x0ab4,0x0043, 0x0ab9,0x0090, 0x0abd,0x0010, 0x0ac4,0x0019, 
-    0x0acc,0x00f5, 0x0acc,0x022b, 0x0acc,0x037b, 0x0ad2,0x008f, 0x0ad2,0x01f1, 
-    0x0ad6,0x0324, 0x0ad9,0x0330, 0x0ade,0x008f, 0x0ade,0x01f1, 0x0ae0,0x017b, 
-    0x0ae4,0x008f, 0x0ae9,0x004e, 0x0aee,0x0027, 0x0af2,0x028a, 0x0af2,0x02a7, 
-    0x0af1,0x031c, 0x0af6,0x0027, 0x0af9,0x031c, 0x0afe,0x00e9, 0x0afe,0x02bb, 
-    0x0b02,0x000b, 0x0b06,0x00f5, 0x0b06,0x022b, 0x0b06,0x037b, 0x0b0a,0x003d, 
-    0x0000,0x0000 
-};
-
-