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Diffstat (limited to 'src/aig/ssw/sswSim.c')
| -rw-r--r-- | src/aig/ssw/sswSim.c | 1405 |
1 files changed, 0 insertions, 1405 deletions
diff --git a/src/aig/ssw/sswSim.c b/src/aig/ssw/sswSim.c deleted file mode 100644 index daee24ec..00000000 --- a/src/aig/ssw/sswSim.c +++ /dev/null @@ -1,1405 +0,0 @@ -/**CFile**************************************************************** - - FileName [sswSim.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Inductive prover with constraints.] - - Synopsis [Sequential simulator used by the inductive prover.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - September 1, 2008.] - - Revision [$Id: sswSim.c,v 1.00 2008/09/01 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "sswInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -// simulation manager -struct Ssw_Sml_t_ -{ - Aig_Man_t * pAig; // the original AIG manager - int nPref; // the number of timeframes in the prefix - int nFrames; // the number of timeframes - int nWordsFrame; // the number of words in each timeframe - 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 -}; - -static inline unsigned * Ssw_ObjSim( Ssw_Sml_t * p, int Id ) { return p->pData + p->nWordsTotal * Id; } -static inline unsigned Ssw_ObjRandomSim() { return Aig_ManRandom(0); } - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Computes hash value of the node using its simulation info.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -unsigned Ssw_SmlObjHashWord( Ssw_Sml_t * p, Aig_Obj_t * pObj ) -{ - static int s_SPrimes[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->nWordsTotal <= 128 ); - uHash = 0; - pSims = Ssw_ObjSim(p, pObj->Id); - for ( i = p->nWordsPref; i < p->nWordsTotal; i++ ) - uHash ^= pSims[i] * s_SPrimes[i & 0x7F]; - return uHash; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if simulation info is composed of all zeros.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlObjIsConstWord( Ssw_Sml_t * p, Aig_Obj_t * pObj ) -{ - unsigned * pSims; - int i; - pSims = Ssw_ObjSim(p, pObj->Id); - for ( i = p->nWordsPref; i < p->nWordsTotal; i++ ) - if ( pSims[i] ) - return 0; - return 1; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if simulation infos are equal.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlObjsAreEqualWord( Ssw_Sml_t * p, Aig_Obj_t * pObj0, Aig_Obj_t * pObj1 ) -{ - unsigned * pSims0, * pSims1; - int i; - pSims0 = Ssw_ObjSim(p, pObj0->Id); - pSims1 = Ssw_ObjSim(p, pObj1->Id); - for ( i = p->nWordsPref; i < p->nWordsTotal; i++ ) - if ( pSims0[i] != pSims1[i] ) - return 0; - return 1; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the node appears to be constant 1 candidate.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlObjIsConstBit( void * p, Aig_Obj_t * pObj ) -{ - return pObj->fPhase == pObj->fMarkB; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the nodes appear equal.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlObjsAreEqualBit( void * p, Aig_Obj_t * pObj0, Aig_Obj_t * pObj1 ) -{ - return (pObj0->fPhase == pObj1->fPhase) == (pObj0->fMarkB == pObj1->fMarkB); -} - - -/**Function************************************************************* - - Synopsis [Counts the number of 1s in the XOR of simulation data.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlNodeNotEquWeight( Ssw_Sml_t * p, int Left, int Right ) -{ - unsigned * pSimL, * pSimR; - int k, Counter = 0; - pSimL = Ssw_ObjSim( p, Left ); - pSimR = Ssw_ObjSim( p, Right ); - for ( k = p->nWordsPref; k < p->nWordsTotal; k++ ) - Counter += Aig_WordCountOnes( pSimL[k] ^ pSimR[k] ); - return Counter; -} - -/**Function************************************************************* - - Synopsis [Checks implication.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlCheckXorImplication( Ssw_Sml_t * p, Aig_Obj_t * pObjLi, Aig_Obj_t * pObjLo, Aig_Obj_t * pCand ) -{ - unsigned * pSimLi, * pSimLo, * pSimCand; - int k; - assert( pObjLo->fPhase == 0 ); - // pObjLi->fPhase may be 1, but the LI simulation data is not complemented! - pSimCand = Ssw_ObjSim( p, Aig_Regular(pCand)->Id ); - pSimLi = Ssw_ObjSim( p, pObjLi->Id ); - pSimLo = Ssw_ObjSim( p, pObjLo->Id ); - if ( Aig_Regular(pCand)->fPhase ^ Aig_IsComplement(pCand) ) - { - for ( k = p->nWordsPref; k < p->nWordsTotal; k++ ) - if ( ~pSimCand[k] & (pSimLi[k] ^ pSimLo[k]) ) - return 0; - } - else - { - for ( k = p->nWordsPref; k < p->nWordsTotal; k++ ) - if ( pSimCand[k] & (pSimLi[k] ^ pSimLo[k]) ) - return 0; - } - return 1; -} - -/**Function************************************************************* - - Synopsis [Counts the number of 1s in the implication.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlCountXorImplication( Ssw_Sml_t * p, Aig_Obj_t * pObjLi, Aig_Obj_t * pObjLo, Aig_Obj_t * pCand ) -{ - unsigned * pSimLi, * pSimLo, * pSimCand; - int k, Counter = 0; - assert( pObjLo->fPhase == 0 ); - // pObjLi->fPhase may be 1, but the LI simulation data is not complemented! - pSimCand = Ssw_ObjSim( p, Aig_Regular(pCand)->Id ); - pSimLi = Ssw_ObjSim( p, pObjLi->Id ); - pSimLo = Ssw_ObjSim( p, pObjLo->Id ); - if ( Aig_Regular(pCand)->fPhase ^ Aig_IsComplement(pCand) ) - { - for ( k = p->nWordsPref; k < p->nWordsTotal; k++ ) - Counter += Aig_WordCountOnes(~pSimCand[k] & ~(pSimLi[k] ^ pSimLo[k])); - } - else - { - for ( k = p->nWordsPref; k < p->nWordsTotal; k++ ) - Counter += Aig_WordCountOnes(pSimCand[k] & ~(pSimLi[k] ^ pSimLo[k])); - } - return Counter; -} - -/**Function************************************************************* - - Synopsis [Counts the number of 1s in the implication.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlCountEqual( Ssw_Sml_t * p, Aig_Obj_t * pObjLi, Aig_Obj_t * pObjLo ) -{ - unsigned * pSimLi, * pSimLo; - int k, Counter = 0; - assert( pObjLo->fPhase == 0 ); - // pObjLi->fPhase may be 1, but the LI simulation data is not complemented! - pSimLi = Ssw_ObjSim( p, pObjLi->Id ); - pSimLo = Ssw_ObjSim( p, pObjLo->Id ); - for ( k = p->nWordsPref; k < p->nWordsTotal; k++ ) - Counter += Aig_WordCountOnes( ~(pSimLi[k] ^ pSimLo[k]) ); - return Counter; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if simulation info is composed of all zeros.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlNodeIsZero( Ssw_Sml_t * p, Aig_Obj_t * pObj ) -{ - unsigned * pSims; - int i; - pSims = Ssw_ObjSim(p, pObj->Id); - for ( i = p->nWordsPref; i < p->nWordsTotal; i++ ) - if ( pSims[i] ) - return 0; - return 1; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if simulation info is composed of all zeros.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlNodeIsZeroFrame( Ssw_Sml_t * p, Aig_Obj_t * pObj, int f ) -{ - unsigned * pSims = Ssw_ObjSim(p, pObj->Id); - return pSims[f] == 0; -} - -/**Function************************************************************* - - Synopsis [Counts the number of one's in the patten the object.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlNodeCountOnesReal( Ssw_Sml_t * p, Aig_Obj_t * pObj ) -{ - unsigned * pSims; - int i, Counter = 0; - pSims = Ssw_ObjSim(p, Aig_Regular(pObj)->Id); - if ( Aig_Regular(pObj)->fPhase ^ Aig_IsComplement(pObj) ) - { - for ( i = 0; i < p->nWordsTotal; i++ ) - Counter += Aig_WordCountOnes( ~pSims[i] ); - } - else - { - for ( i = 0; i < p->nWordsTotal; i++ ) - Counter += Aig_WordCountOnes( pSims[i] ); - } - return Counter; -} - -/**Function************************************************************* - - Synopsis [Counts the number of one's in the patten the object.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlNodeCountOnesRealVec( Ssw_Sml_t * p, Vec_Ptr_t * vObjs ) -{ - Aig_Obj_t * pObj; - unsigned * pSims, uWord; - int i, k, Counter = 0; - if ( Vec_PtrSize(vObjs) == 0 ) - return 0; - for ( i = 0; i < p->nWordsTotal; i++ ) - { - uWord = 0; - Vec_PtrForEachEntry( Aig_Obj_t *, vObjs, pObj, k ) - { - pSims = Ssw_ObjSim(p, Aig_Regular(pObj)->Id); - if ( Aig_Regular(pObj)->fPhase ^ Aig_IsComplement(pObj) ) - uWord |= ~pSims[i]; - else - uWord |= pSims[i]; - } - Counter += Aig_WordCountOnes( uWord ); - } - return Counter; -} - - - -/**Function************************************************************* - - Synopsis [Generated const 0 pattern.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlSavePattern0( Ssw_Man_t * p, int fInit ) -{ - memset( p->pPatWords, 0, sizeof(unsigned) * p->nPatWords ); -} - -/**Function************************************************************* - - Synopsis [[Generated const 1 pattern.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlSavePattern1( Ssw_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 = Saig_ManPiNum(p->pAig); - k = 0; - Saig_ManForEachLo( p->pAig, pObj, i ) - Aig_InfoXorBit( p->pPatWords, nTruePis * p->nFrames + k++ ); -} - - -/**Function************************************************************* - - Synopsis [Creates the counter-example from the successful pattern.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int * Ssw_SmlCheckOutputSavePattern( Ssw_Sml_t * p, Aig_Obj_t * pObjPo ) -{ - Aig_Obj_t * pFanin, * pObjPi; - unsigned * pSims; - int i, k, BestPat, * pModel; - // find the word of the pattern - pFanin = Aig_ObjFanin0(pObjPo); - pSims = Ssw_ObjSim(p, pFanin->Id); - for ( i = 0; i < p->nWordsTotal; i++ ) - if ( pSims[i] ) - break; - assert( i < p->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 = ABC_ALLOC( int, Aig_ManPiNum(p->pAig)+1 ); - Aig_ManForEachPi( p->pAig, pObjPi, i ) - { - pModel[i] = Aig_InfoHasBit(Ssw_ObjSim(p, pObjPi->Id), BestPat); -// printf( "%d", pModel[i] ); - } - pModel[Aig_ManPiNum(p->pAig)] = pObjPo->Id; -// printf( "\n" ); - return pModel; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the one of the output is already non-constant 0.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int * Ssw_SmlCheckOutput( Ssw_Sml_t * p ) -{ - Aig_Obj_t * pObj; - int i; - // make sure the reference simulation pattern does not detect the bug - pObj = Aig_ManPo( p->pAig, 0 ); - assert( Aig_ObjFanin0(pObj)->fPhase == (unsigned)Aig_ObjFaninC0(pObj) ); - Aig_ManForEachPo( p->pAig, pObj, i ) - { - if ( !Ssw_SmlObjIsConstWord( p, Aig_ObjFanin0(pObj) ) ) - { - // create the counter-example from this pattern - return Ssw_SmlCheckOutputSavePattern( p, pObj ); - } - } - return NULL; -} - - - -/**Function************************************************************* - - Synopsis [Assigns random patterns to the PI node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlAssignRandom( Ssw_Sml_t * p, Aig_Obj_t * pObj ) -{ - unsigned * pSims; - int i, f; - assert( Aig_ObjIsPi(pObj) ); - pSims = Ssw_ObjSim( p, pObj->Id ); - for ( i = 0; i < p->nWordsTotal; i++ ) - pSims[i] = Ssw_ObjRandomSim(); - // set the first bit 0 in each frame - assert( p->nWordsFrame * p->nFrames == p->nWordsTotal ); - for ( f = 0; f < p->nFrames; f++ ) - pSims[p->nWordsFrame*f] <<= 1; -} - -/**Function************************************************************* - - Synopsis [Assigns random patterns to the PI node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlAssignRandomFrame( Ssw_Sml_t * p, Aig_Obj_t * pObj, int iFrame ) -{ - unsigned * pSims; - int i; - assert( iFrame < p->nFrames ); - assert( Aig_ObjIsPi(pObj) ); - pSims = Ssw_ObjSim( p, pObj->Id ) + p->nWordsFrame * iFrame; - for ( i = 0; i < p->nWordsFrame; i++ ) - pSims[i] = Ssw_ObjRandomSim(); -} - -/**Function************************************************************* - - Synopsis [Assigns constant patterns to the PI node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlObjAssignConst( Ssw_Sml_t * p, Aig_Obj_t * pObj, int fConst1, int iFrame ) -{ - unsigned * pSims; - int i; - assert( iFrame < p->nFrames ); - assert( Aig_ObjIsPi(pObj) ); - pSims = Ssw_ObjSim( p, pObj->Id ) + p->nWordsFrame * iFrame; - for ( i = 0; i < p->nWordsFrame; i++ ) - pSims[i] = fConst1? ~(unsigned)0 : 0; -} - -/**Function************************************************************* - - Synopsis [Assigns constant patterns to the PI node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlObjAssignConstWord( Ssw_Sml_t * p, Aig_Obj_t * pObj, int fConst1, int iFrame, int iWord ) -{ - unsigned * pSims; - assert( iFrame < p->nFrames ); - assert( iWord < p->nWordsFrame ); - assert( Aig_ObjIsPi(pObj) ); - pSims = Ssw_ObjSim( p, pObj->Id ) + p->nWordsFrame * iFrame; - pSims[iWord] = fConst1? ~(unsigned)0 : 0; -} - -/**Function************************************************************* - - Synopsis [Assigns constant patterns to the PI node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlObjSetWord( Ssw_Sml_t * p, Aig_Obj_t * pObj, unsigned Word, int iWord, int iFrame ) -{ - unsigned * pSims; - assert( iFrame < p->nFrames ); - assert( Aig_ObjIsPi(pObj) ); - pSims = Ssw_ObjSim( p, pObj->Id ) + p->nWordsFrame * iFrame; - pSims[iWord] = Word; -} - -/**Function************************************************************* - - Synopsis [Assings distance-1 simulation info for the PIs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlAssignDist1( Ssw_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 ) - Ssw_SmlObjAssignConst( p, pObj, Aig_InfoHasBit(pPat, i), 0 ); - // flip one bit - Limit = ABC_MIN( Aig_ManPiNum(p->pAig), p->nWordsTotal * 32 - 1 ); - for ( i = 0; i < Limit; i++ ) - Aig_InfoXorBit( Ssw_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++ ) - Saig_ManForEachPi( p->pAig, pObj, i ) - Ssw_SmlObjAssignConst( p, pObj, Aig_InfoHasBit(pPat, nTruePis * f + i), f ); - // copy the latch info - k = 0; - Saig_ManForEachLo( p->pAig, pObj, i ) - Ssw_SmlObjAssignConst( p, pObj, Aig_InfoHasBit(pPat, nTruePis * p->nFrames + k++), 0 ); -// assert( p->pFrames == NULL || nTruePis * p->nFrames + k == Aig_ManPiNum(p->pFrames) ); - - // flip one bit of the last frame - if ( fUseDist1 ) //&& p->nFrames == 2 ) - { - Limit = ABC_MIN( nTruePis, p->nWordsFrame * 32 - 1 ); - for ( i = 0; i < Limit; i++ ) - Aig_InfoXorBit( Ssw_ObjSim( p, Aig_ManPi(p->pAig, i)->Id ) + p->nWordsFrame*(p->nFrames-1), i+1 ); - } - } -} - -/**Function************************************************************* - - Synopsis [Assings distance-1 simulation info for the PIs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlAssignDist1Plus( Ssw_Sml_t * p, unsigned * pPat ) -{ - Aig_Obj_t * pObj; - int f, i, Limit; - assert( p->nFrames > 0 ); - - // copy the pattern into the primary inputs - Aig_ManForEachPi( p->pAig, pObj, i ) - Ssw_SmlObjAssignConst( p, pObj, Aig_InfoHasBit(pPat, i), 0 ); - - // set distance one PIs for the first frame - Limit = ABC_MIN( Saig_ManPiNum(p->pAig), p->nWordsFrame * 32 - 1 ); - for ( i = 0; i < Limit; i++ ) - Aig_InfoXorBit( Ssw_ObjSim( p, Aig_ManPi(p->pAig, i)->Id ), i+1 ); - - // create random info for the remaining timeframes - for ( f = 1; f < p->nFrames; f++ ) - Saig_ManForEachPi( p->pAig, pObj, i ) - Ssw_SmlAssignRandomFrame( p, pObj, f ); -} - -/**Function************************************************************* - - Synopsis [Simulates one node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlNodeSimulate( Ssw_Sml_t * p, Aig_Obj_t * pObj, int iFrame ) -{ - unsigned * pSims, * pSims0, * pSims1; - int fCompl, fCompl0, fCompl1, i; - assert( iFrame < p->nFrames ); - assert( !Aig_IsComplement(pObj) ); - assert( Aig_ObjIsNode(pObj) ); - assert( iFrame == 0 || p->nWordsFrame < p->nWordsTotal ); - // get hold of the simulation information - pSims = Ssw_ObjSim(p, pObj->Id) + p->nWordsFrame * iFrame; - pSims0 = Ssw_ObjSim(p, Aig_ObjFanin0(pObj)->Id) + p->nWordsFrame * iFrame; - pSims1 = Ssw_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 [] - -***********************************************************************/ -int Ssw_SmlNodesCompareInFrame( Ssw_Sml_t * p, Aig_Obj_t * pObj0, Aig_Obj_t * pObj1, int iFrame0, int iFrame1 ) -{ - unsigned * pSims0, * pSims1; - int i; - assert( iFrame0 < p->nFrames ); - assert( iFrame1 < p->nFrames ); - assert( !Aig_IsComplement(pObj0) ); - assert( !Aig_IsComplement(pObj1) ); - assert( iFrame0 == 0 || p->nWordsFrame < p->nWordsTotal ); - assert( iFrame1 == 0 || p->nWordsFrame < p->nWordsTotal ); - // get hold of the simulation information - pSims0 = Ssw_ObjSim(p, pObj0->Id) + p->nWordsFrame * iFrame0; - pSims1 = Ssw_ObjSim(p, pObj1->Id) + p->nWordsFrame * iFrame1; - // compare - for ( i = 0; i < p->nWordsFrame; i++ ) - if ( pSims0[i] != pSims1[i] ) - return 0; - return 1; -} - -/**Function************************************************************* - - Synopsis [Simulates one node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlNodeCopyFanin( Ssw_Sml_t * p, Aig_Obj_t * pObj, int iFrame ) -{ - unsigned * pSims, * pSims0; - int fCompl, fCompl0, i; - assert( iFrame < p->nFrames ); - assert( !Aig_IsComplement(pObj) ); - assert( Aig_ObjIsPo(pObj) ); - assert( iFrame == 0 || p->nWordsFrame < p->nWordsTotal ); - // get hold of the simulation information - pSims = Ssw_ObjSim(p, pObj->Id) + p->nWordsFrame * iFrame; - pSims0 = Ssw_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 Ssw_SmlNodeTransferNext( Ssw_Sml_t * p, Aig_Obj_t * pOut, Aig_Obj_t * pIn, int iFrame ) -{ - unsigned * pSims0, * pSims1; - int i; - assert( iFrame < p->nFrames ); - 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 = Ssw_ObjSim(p, pOut->Id) + p->nWordsFrame * iFrame; - pSims1 = Ssw_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 [Simulates one node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlNodeTransferFirst( Ssw_Sml_t * p, Aig_Obj_t * pOut, Aig_Obj_t * pIn ) -{ - unsigned * pSims0, * pSims1; - int i; - assert( !Aig_IsComplement(pOut) ); - assert( !Aig_IsComplement(pIn) ); - assert( Aig_ObjIsPo(pOut) ); - assert( Aig_ObjIsPi(pIn) ); - assert( p->nWordsFrame < p->nWordsTotal ); - // get hold of the simulation information - pSims0 = Ssw_ObjSim(p, pOut->Id) + p->nWordsFrame * (p->nFrames-1); - pSims1 = Ssw_ObjSim(p, pIn->Id); - // copy information as it is - for ( i = 0; i < p->nWordsFrame; i++ ) - pSims1[i] = pSims0[i]; -} - - -/**Function************************************************************* - - Synopsis [Assings random simulation info for the PIs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlInitialize( Ssw_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 - Saig_ManForEachPi( p->pAig, pObj, i ) - Ssw_SmlAssignRandom( p, pObj ); - // assign the initial state for the latches - Saig_ManForEachLo( p->pAig, pObj, i ) - Ssw_SmlObjAssignConst( p, pObj, 0, 0 ); - } - else - { - Aig_ManForEachPi( p->pAig, pObj, i ) - Ssw_SmlAssignRandom( p, pObj ); - } -} - -/**Function************************************************************* - - Synopsis [Assings random simulation info for the PIs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlInitializeSpecial( Ssw_Sml_t * p, Vec_Int_t * vInit ) -{ - Aig_Obj_t * pObj; - int Entry, i, nRegs; - nRegs = Aig_ManRegNum(p->pAig); - assert( nRegs > 0 ); - assert( nRegs <= Aig_ManPiNum(p->pAig) ); - assert( Vec_IntSize(vInit) == nRegs * p->nWordsFrame ); - // assign random info for primary inputs - Saig_ManForEachPi( p->pAig, pObj, i ) - Ssw_SmlAssignRandom( p, pObj ); - // assign the initial state for the latches - Vec_IntForEachEntry( vInit, Entry, i ) - Ssw_SmlObjAssignConstWord( p, Saig_ManLo(p->pAig, i % nRegs), Entry, 0, i / nRegs ); -} - -/**Function************************************************************* - - Synopsis [Assings random simulation info for the PIs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlReinitialize( Ssw_Sml_t * p ) -{ - Aig_Obj_t * pObj, * pObjLi, * pObjLo; - int i; - assert( Aig_ManRegNum(p->pAig) > 0 ); - assert( Aig_ManRegNum(p->pAig) < Aig_ManPiNum(p->pAig) ); - // assign random info for primary inputs - Saig_ManForEachPi( p->pAig, pObj, i ) - Ssw_SmlAssignRandom( p, pObj ); - // copy simulation info into the inputs - Saig_ManForEachLiLo( p->pAig, pObjLi, pObjLo, i ) - Ssw_SmlNodeTransferFirst( p, pObjLi, pObjLo ); -} - -/**Function************************************************************* - - Synopsis [Check if any of the POs becomes non-constant.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlCheckNonConstOutputs( Ssw_Sml_t * p ) -{ - Aig_Obj_t * pObj; - int i; - Saig_ManForEachPo( p->pAig, pObj, i ) - { - if ( p->pAig->nConstrs && i >= Saig_ManPoNum(p->pAig) - p->pAig->nConstrs ) - return 0; - if ( !Ssw_SmlNodeIsZero(p, pObj) ) - return 1; - } - return 0; -} - -/**Function************************************************************* - - Synopsis [Simulates AIG manager.] - - Description [Assumes that the PI simulation info is attached.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlSimulateOne( Ssw_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 ) - Ssw_SmlNodeSimulate( p, pObj, f ); - // copy simulation info into outputs - Saig_ManForEachPo( p->pAig, pObj, i ) - Ssw_SmlNodeCopyFanin( p, pObj, f ); - // copy simulation info into outputs - Saig_ManForEachLi( p->pAig, pObj, i ) - Ssw_SmlNodeCopyFanin( p, pObj, f ); - // quit if this is the last timeframe - if ( f == p->nFrames - 1 ) - break; - // copy simulation info into the inputs - Saig_ManForEachLiLo( p->pAig, pObjLi, pObjLo, i ) - Ssw_SmlNodeTransferNext( p, pObjLi, pObjLo, f ); - } -p->timeSim += clock() - clk; -p->nSimRounds++; -} - -/**Function************************************************************* - - Synopsis [Converts simulation information to be not normallized.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlUnnormalize( Ssw_Sml_t * p ) -{ - Aig_Obj_t * pObj; - unsigned * pSims; - int i, k; - // convert constant 1 - pSims = Ssw_ObjSim( p, 0 ); - for ( i = 0; i < p->nWordsFrame; i++ ) - pSims[i] = ~pSims[i]; - // convert internal nodes - Aig_ManForEachNode( p->pAig, pObj, k ) - { - if ( pObj->fPhase == 0 ) - continue; - pSims = Ssw_ObjSim( p, pObj->Id ); - for ( i = 0; i < p->nWordsFrame; i++ ) - pSims[i] = ~pSims[i]; - } - // PIs/POs are always stored in their natural state -} - -/**Function************************************************************* - - Synopsis [Simulates AIG manager.] - - Description [Assumes that the PI simulation info is attached.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlSimulateOneDyn_rec( Ssw_Sml_t * p, Aig_Obj_t * pObj, int f, int * pVisited, int nVisCounter ) -{ -// if ( Aig_ObjIsTravIdCurrent(p->pAig, pObj) ) -// return; -// Aig_ObjSetTravIdCurrent(p->pAig, pObj); - if ( pVisited[p->nFrames*pObj->Id+f] == nVisCounter ) - return; - pVisited[p->nFrames*pObj->Id+f] = nVisCounter; - if ( Saig_ObjIsPi( p->pAig, pObj ) || Aig_ObjIsConst1(pObj) ) - return; - if ( Saig_ObjIsLo( p->pAig, pObj ) ) - { - if ( f == 0 ) - return; - Ssw_SmlSimulateOneDyn_rec( p, Saig_ObjLoToLi(p->pAig, pObj), f-1, pVisited, nVisCounter ); - Ssw_SmlNodeTransferNext( p, Saig_ObjLoToLi(p->pAig, pObj), pObj, f-1 ); - return; - } - if ( Saig_ObjIsLi( p->pAig, pObj ) ) - { - Ssw_SmlSimulateOneDyn_rec( p, Aig_ObjFanin0(pObj), f, pVisited, nVisCounter ); - Ssw_SmlNodeCopyFanin( p, pObj, f ); - return; - } - assert( Aig_ObjIsNode(pObj) ); - Ssw_SmlSimulateOneDyn_rec( p, Aig_ObjFanin0(pObj), f, pVisited, nVisCounter ); - Ssw_SmlSimulateOneDyn_rec( p, Aig_ObjFanin1(pObj), f, pVisited, nVisCounter ); - Ssw_SmlNodeSimulate( p, pObj, f ); -} - -/**Function************************************************************* - - Synopsis [Simulates AIG manager.] - - Description [Assumes that the PI simulation info is attached.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlSimulateOneFrame( Ssw_Sml_t * p ) -{ - Aig_Obj_t * pObj, * pObjLi, * pObjLo; - int i, clk; -clk = clock(); - // simulate the nodes - Aig_ManForEachNode( p->pAig, pObj, i ) - Ssw_SmlNodeSimulate( p, pObj, 0 ); - // copy simulation info into outputs - Saig_ManForEachLi( p->pAig, pObj, i ) - Ssw_SmlNodeCopyFanin( p, pObj, 0 ); - // copy simulation info into the inputs - Saig_ManForEachLiLo( p->pAig, pObjLi, pObjLo, i ) - Ssw_SmlNodeTransferNext( p, pObjLi, pObjLo, 0 ); -p->timeSim += clock() - clk; -p->nSimRounds++; -} - - -/**Function************************************************************* - - Synopsis [Allocates simulation manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Ssw_Sml_t * Ssw_SmlStart( Aig_Man_t * pAig, int nPref, int nFrames, int nWordsFrame ) -{ - Ssw_Sml_t * p; - p = (Ssw_Sml_t *)ABC_ALLOC( char, sizeof(Ssw_Sml_t) + sizeof(unsigned) * Aig_ManObjNumMax(pAig) * (nPref + nFrames) * nWordsFrame ); - memset( p, 0, sizeof(Ssw_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 [Allocates simulation manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlClean( Ssw_Sml_t * p ) -{ - memset( p->pData, 0, sizeof(unsigned) * Aig_ManObjNumMax(p->pAig) * p->nWordsTotal ); -} - -/**Function************************************************************* - - Synopsis [Get simulation data.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Ptr_t * Ssw_SmlSimDataPointers( Ssw_Sml_t * p ) -{ - Vec_Ptr_t * vSimInfo; - Aig_Obj_t * pObj; - int i; - vSimInfo = Vec_PtrStart( Aig_ManObjNumMax(p->pAig) ); - Aig_ManForEachObj( p->pAig, pObj, i ) - Vec_PtrWriteEntry( vSimInfo, i, Ssw_ObjSim(p, i) ); - return vSimInfo; -} - -/**Function************************************************************* - - Synopsis [Deallocates simulation manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlStop( Ssw_Sml_t * p ) -{ - ABC_FREE( p ); -} - - -/**Function************************************************************* - - Synopsis [Performs simulation of the uninitialized circuit.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Ssw_Sml_t * Ssw_SmlSimulateComb( Aig_Man_t * pAig, int nWords ) -{ - Ssw_Sml_t * p; - p = Ssw_SmlStart( pAig, 0, 1, nWords ); - Ssw_SmlInitialize( p, 0 ); - Ssw_SmlSimulateOne( p ); - return p; -} - -/**Function************************************************************* - - Synopsis [Performs simulation of the initialized circuit.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Ssw_Sml_t * Ssw_SmlSimulateSeq( Aig_Man_t * pAig, int nPref, int nFrames, int nWords ) -{ - Ssw_Sml_t * p; - p = Ssw_SmlStart( pAig, nPref, nFrames, nWords ); - Ssw_SmlInitialize( p, 1 ); - Ssw_SmlSimulateOne( p ); - p->fNonConstOut = Ssw_SmlCheckNonConstOutputs( p ); - return p; -} - -/**Function************************************************************* - - Synopsis [Performs next round of sequential simulation.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ssw_SmlResimulateSeq( Ssw_Sml_t * p ) -{ - Ssw_SmlReinitialize( p ); - Ssw_SmlSimulateOne( p ); - p->fNonConstOut = Ssw_SmlCheckNonConstOutputs( p ); -} - - -/**Function************************************************************* - - Synopsis [Returns the number of frames simulated in the manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlNumFrames( Ssw_Sml_t * p ) -{ - return p->nFrames; -} - -/**Function************************************************************* - - Synopsis [Returns the total number of simulation words.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ssw_SmlNumWordsTotal( Ssw_Sml_t * p ) -{ - return p->nWordsTotal; -} - -/**Function************************************************************* - - Synopsis [Returns the pointer to the simulation info of the node.] - - Description [The simulation info is normalized unless procedure - Ssw_SmlUnnormalize() is called in advance.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -unsigned * Ssw_SmlSimInfo( Ssw_Sml_t * p, Aig_Obj_t * pObj ) -{ - assert( !Aig_IsComplement(pObj) ); - return Ssw_ObjSim( p, pObj->Id ); -} - -/**Function************************************************************* - - Synopsis [Creates sequential counter-example from the simulation info.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Abc_Cex_t * Ssw_SmlGetCounterExample( Ssw_Sml_t * p ) -{ - Abc_Cex_t * pCex; - Aig_Obj_t * pObj; - unsigned * pSims; - int iPo, iFrame, iBit, i, k; - - // make sure the simulation manager has it - assert( p->fNonConstOut ); - - // find the first output that failed - iPo = -1; - iBit = -1; - iFrame = -1; - Saig_ManForEachPo( p->pAig, pObj, iPo ) - { - if ( Ssw_SmlNodeIsZero(p, pObj) ) - continue; - pSims = Ssw_ObjSim( p, pObj->Id ); - for ( i = p->nWordsPref; i < p->nWordsTotal; i++ ) - if ( pSims[i] ) - { - iFrame = i / p->nWordsFrame; - iBit = 32 * (i % p->nWordsFrame) + Aig_WordFindFirstBit( pSims[i] ); - break; - } - break; - } - assert( iPo < Aig_ManPoNum(p->pAig)-Aig_ManRegNum(p->pAig) ); - assert( iFrame < p->nFrames ); - assert( iBit < 32 * p->nWordsFrame ); - - // allocate the counter example - pCex = Abc_CexAlloc( Aig_ManRegNum(p->pAig), Aig_ManPiNum(p->pAig) - Aig_ManRegNum(p->pAig), iFrame + 1 ); - pCex->iPo = iPo; - pCex->iFrame = iFrame; - - // copy the bit data - Saig_ManForEachLo( p->pAig, pObj, k ) - { - pSims = Ssw_ObjSim( p, pObj->Id ); - if ( Aig_InfoHasBit( pSims, iBit ) ) - Aig_InfoSetBit( pCex->pData, k ); - } - for ( i = 0; i <= iFrame; i++ ) - { - Saig_ManForEachPi( p->pAig, pObj, k ) - { - pSims = Ssw_ObjSim( p, pObj->Id ); - if ( Aig_InfoHasBit( pSims, 32 * p->nWordsFrame * i + iBit ) ) - Aig_InfoSetBit( pCex->pData, pCex->nRegs + pCex->nPis * i + k ); - } - } - // verify the counter example - if ( !Saig_ManVerifyCex( p->pAig, pCex ) ) - { - printf( "Ssw_SmlGetCounterExample(): Counter-example is invalid.\n" ); - Abc_CexFree( pCex ); - pCex = NULL; - } - return pCex; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - |