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Diffstat (limited to 'src/proof/llb/llb1Constr.c')
| -rw-r--r-- | src/proof/llb/llb1Constr.c | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/src/proof/llb/llb1Constr.c b/src/proof/llb/llb1Constr.c deleted file mode 100644 index 1ef4ce14..00000000 --- a/src/proof/llb/llb1Constr.c +++ /dev/null @@ -1,313 +0,0 @@ -/**CFile**************************************************************** - - FileName [llb1Constr.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [BDD based reachability.] - - Synopsis [Computing inductive constraints.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - June 20, 2005.] - - Revision [$Id: llb1Constr.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "llbInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Returns the array of constraint candidates.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Llb_ManCountEntries( Vec_Int_t * vCands ) -{ - int i, Entry, Counter = 0; - Vec_IntForEachEntry( vCands, Entry, i ) - Counter += ((Entry == 0) || (Entry == 1)); - return Counter; -} - -/**Function************************************************************* - - Synopsis [Returns the array of constraint candidates.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Llb_ManPrintEntries( Aig_Man_t * p, Vec_Int_t * vCands ) -{ - int i, Entry; - if ( vCands == NULL ) - { - printf( "There is no hints.\n" ); - return; - } - Entry = Llb_ManCountEntries(vCands); - printf( "\n*** Using %d hint%s:\n", Entry, (Entry != 1 ? "s":"") ); - Vec_IntForEachEntry( vCands, Entry, i ) - { - if ( Entry != 0 && Entry != 1 ) - continue; - printf( "%c", Entry ? '+' : '-' ); - printf( "%-6d : ", i ); - Aig_ObjPrint( p, Aig_ManObj(p, i) ); - printf( "\n" ); - } -} - -/**Function************************************************************* - - Synopsis [Dereference BDD nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Llb_ManDerefenceBdds( Aig_Man_t * p, DdManager * dd ) -{ - Aig_Obj_t * pObj; - int i; - Aig_ManForEachObj( p, pObj, i ) - Cudd_RecursiveDeref( dd, (DdNode *)pObj->pData ); -} - -/**Function************************************************************* - - Synopsis [Returns the array of constraint candidates.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -DdNode * Llb_ManComputeIndCase_rec( Aig_Man_t * p, Aig_Obj_t * pObj, DdManager * dd, Vec_Ptr_t * vBdds ) -{ - DdNode * bBdd0, * bBdd1; - DdNode * bFunc = (DdNode *)Vec_PtrEntry( vBdds, Aig_ObjId(pObj) ); - if ( bFunc != NULL ) - return bFunc; - assert( Aig_ObjIsNode(pObj) ); - bBdd0 = Llb_ManComputeIndCase_rec( p, Aig_ObjFanin0(pObj), dd, vBdds ); - bBdd1 = Llb_ManComputeIndCase_rec( p, Aig_ObjFanin1(pObj), dd, vBdds ); - bBdd0 = Cudd_NotCond( bBdd0, Aig_ObjFaninC0(pObj) ); - bBdd1 = Cudd_NotCond( bBdd1, Aig_ObjFaninC1(pObj) ); - bFunc = Cudd_bddAnd( dd, bBdd0, bBdd1 ); Cudd_Ref( bFunc ); - Vec_PtrWriteEntry( vBdds, Aig_ObjId(pObj), bFunc ); - return bFunc; -} - -/**Function************************************************************* - - Synopsis [Returns the array of constraint candidates.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Llb_ManComputeIndCase( Aig_Man_t * p, DdManager * dd, Vec_Int_t * vNodes ) -{ - Vec_Ptr_t * vBdds; - Aig_Obj_t * pObj; - DdNode * bFunc; - int i, Entry; - vBdds = Vec_PtrStart( Aig_ManObjNumMax(p) ); - bFunc = Cudd_ReadOne(dd); Cudd_Ref( bFunc ); - Vec_PtrWriteEntry( vBdds, Aig_ObjId(Aig_ManConst1(p)), bFunc ); - Saig_ManForEachPi( p, pObj, i ) - { - bFunc = Cudd_bddIthVar( dd, Aig_ManCiNum(p) + i ); Cudd_Ref( bFunc ); - Vec_PtrWriteEntry( vBdds, Aig_ObjId(pObj), bFunc ); - } - Saig_ManForEachLi( p, pObj, i ) - { - bFunc = (DdNode *)pObj->pData; Cudd_Ref( bFunc ); - Vec_PtrWriteEntry( vBdds, Aig_ObjId(Saig_ObjLiToLo(p, pObj)), bFunc ); - } - Vec_IntForEachEntry( vNodes, Entry, i ) - { - if ( Entry != 0 && Entry != 1 ) - continue; - pObj = Aig_ManObj( p, i ); - bFunc = Llb_ManComputeIndCase_rec( p, pObj, dd, vBdds ); - if ( Entry == 0 ) - { -// Extra_bddPrint( dd, Cudd_Not(pObj->pData) ); printf( "\n" ); -// Extra_bddPrint( dd, Cudd_Not(bFunc) ); printf( "\n" ); - if ( !Cudd_bddLeq( dd, Cudd_Not(pObj->pData), Cudd_Not(bFunc) ) ) - Vec_IntWriteEntry( vNodes, i, -1 ); - } - else if ( Entry == 1 ) - { -// Extra_bddPrint( dd, pObj->pData ); printf( "\n" ); -// Extra_bddPrint( dd, bFunc ); printf( "\n" ); - if ( !Cudd_bddLeq( dd, (DdNode *)pObj->pData, bFunc ) ) - Vec_IntWriteEntry( vNodes, i, -1 ); - } - } - Vec_PtrForEachEntry( DdNode *, vBdds, bFunc, i ) - if ( bFunc ) - Cudd_RecursiveDeref( dd, bFunc ); - Vec_PtrFree( vBdds ); -} - -/**Function************************************************************* - - Synopsis [Returns the array of constraint candidates.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Int_t * Llb_ManComputeBaseCase( Aig_Man_t * p, DdManager * dd ) -{ - Vec_Int_t * vNodes; - Aig_Obj_t * pObj, * pRoot; - int i; - pRoot = Aig_ManCo( p, 0 ); - vNodes = Vec_IntStartFull( Aig_ManObjNumMax(p) ); - Aig_ManForEachObj( p, pObj, i ) - { - if ( !Aig_ObjIsNode(pObj) && !Aig_ObjIsCi(pObj) ) - continue; - if ( Cudd_bddLeq( dd, (DdNode *)pObj->pData, Cudd_Not(pRoot->pData) ) ) - Vec_IntWriteEntry( vNodes, i, 1 ); - else if ( Cudd_bddLeq( dd, Cudd_Not((DdNode *)pObj->pData), Cudd_Not(pRoot->pData) ) ) - Vec_IntWriteEntry( vNodes, i, 0 ); - } - return vNodes; -} - -/**Function************************************************************* - - Synopsis [Constructs global BDDs for each object in the AIG manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -DdManager * Llb_ManConstructGlobalBdds( Aig_Man_t * p ) -{ - DdManager * dd; - DdNode * bBdd0, * bBdd1; - Aig_Obj_t * pObj; - int i; - dd = Cudd_Init( Aig_ManCiNum(p), 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 ); - Cudd_AutodynEnable( dd, CUDD_REORDER_SYMM_SIFT ); - pObj = Aig_ManConst1(p); - pObj->pData = Cudd_ReadOne(dd); Cudd_Ref( (DdNode *)pObj->pData ); - Aig_ManForEachCi( p, pObj, i ) - { - pObj->pData = Cudd_bddIthVar(dd, i); Cudd_Ref( (DdNode *)pObj->pData ); - } - Aig_ManForEachNode( p, pObj, i ) - { - bBdd0 = Cudd_NotCond( (DdNode *)Aig_ObjFanin0(pObj)->pData, Aig_ObjFaninC0(pObj) ); - bBdd1 = Cudd_NotCond( (DdNode *)Aig_ObjFanin1(pObj)->pData, Aig_ObjFaninC1(pObj) ); - pObj->pData = Cudd_bddAnd( dd, bBdd0, bBdd1 ); Cudd_Ref( (DdNode *)pObj->pData ); - } - Aig_ManForEachCo( p, pObj, i ) - { - pObj->pData = Cudd_NotCond( (DdNode *)Aig_ObjFanin0(pObj)->pData, Aig_ObjFaninC0(pObj) ); Cudd_Ref( (DdNode *)pObj->pData ); - } - return dd; -} - -/**Function************************************************************* - - Synopsis [Derives inductive constraints.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Int_t * Llb_ManDeriveConstraints( Aig_Man_t * p ) -{ - DdManager * dd; - Vec_Int_t * vNodes; - if ( Saig_ManPoNum(p) != 1 ) - { - printf( "The AIG has %d property outputs.\n", Saig_ManPoNum(p) ); - return NULL; - } - assert( Saig_ManPoNum(p) == 1 ); - dd = Llb_ManConstructGlobalBdds( p ); - vNodes = Llb_ManComputeBaseCase( p, dd ); - if ( Llb_ManCountEntries(vNodes) > 0 ) - Llb_ManComputeIndCase( p, dd, vNodes ); - if ( Llb_ManCountEntries(vNodes) == 0 ) - Vec_IntFreeP( &vNodes ); - Llb_ManDerefenceBdds( p, dd ); - Extra_StopManager( dd ); - return vNodes; -} - -/**Function************************************************************* - - Synopsis [Tests derived constraints.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Llb_ManConstrTest( Aig_Man_t * p ) -{ - Vec_Int_t * vNodes; - vNodes = Llb_ManDeriveConstraints( p ); - Llb_ManPrintEntries( p, vNodes ); - Vec_IntFreeP( &vNodes ); -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - |