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%pdra: now checks if cex is real before refinement

This commit is contained in:
Yen-Sheng Ho 2017-03-01 12:12:42 -08:00
parent b71d2ab2ba
commit da0f4ef33b
1 changed files with 44 additions and 0 deletions
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44
src/base/wlc/wlcAbs.c
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@ -302,6 +302,40 @@ Wlc_Ntk_t * Wlc_NtkIntroduceChoices( Wlc_Ntk_t * pNtk, Vec_Int_t * vBlacks )
return pNew;
}
static int Wlc_NtkCexIsReal( Wlc_Ntk_t * pOrig, Abc_Cex_t * pCex )
{
Gia_Man_t * pGiaOrig = Wlc_NtkBitBlast( pOrig, NULL, -1, 0, 0, 0, 0 );
int f, i;
Gia_Obj_t * pObj, * pObjRi;
Gia_ManConst0(pGiaOrig)->Value = 0;
Gia_ManForEachRi( pGiaOrig, pObj, i )
pObj->Value = 0;
for ( f = 0; f <= pCex->iFrame; f++ )
{
for( i = 0; i < Gia_ManPiNum( pGiaOrig ); i++ )
Gia_ManPi(pGiaOrig, i)->Value = Abc_InfoHasBit(pCex->pData, pCex->nRegs+pCex->nPis*f + i);
Gia_ManForEachRiRo( pGiaOrig, pObjRi, pObj, i )
pObj->Value = pObjRi->Value;
Gia_ManForEachAnd( pGiaOrig, pObj, i )
pObj->Value = Gia_ObjFanin0Copy(pObj) & Gia_ObjFanin1Copy(pObj);
Gia_ManForEachCo( pGiaOrig, pObj, i )
pObj->Value = Gia_ObjFanin0Copy(pObj);
Gia_ManForEachPo( pGiaOrig, pObj, i )
{
if (pObj->Value==1) {
Abc_Print( 1, "CEX is real on the original model.\n" );
Gia_ManStop(pGiaOrig);
return 1;
}
}
}
// Abc_Print( 1, "CEX is spurious.\n" );
Gia_ManStop(pGiaOrig);
return 0;
}
static Wlc_Ntk_t * Wlc_NtkAbs2( Wlc_Ntk_t * pNtk, Vec_Int_t * vBlacks, Vec_Int_t ** pvFlops )
{
Vec_Int_t * vFlops = Vec_IntAlloc( 100 );
@ -1107,6 +1141,16 @@ int Wlc_NtkPdrAbs( Wlc_Ntk_t * p, Wlc_Par_t * pPars )
break;
}
// verify CEX
if ( Wlc_NtkCexIsReal( p, pCex ) )
{
vRefine = NULL;
Abc_CexFree( pCex ); // return CEX in the future
Pdr_ManStop( pPdr );
Aig_ManStop( pAig );
break;
}
// perform refinement
if ( pPars->fHybrid || !pPars->fProofRefine )
{