Changes to enable smarter simulation.

src/aig/ssw/sswRarity.c

@@ -833,7 +833,12 @@ static Vec_Int_t * Ssw_RarFindStartingState( Aig_Man_t * pAig, Abc_Cex_t * pCex
     // record the new pattern
     vInit = Vec_IntAlloc( Saig_ManRegNum(pAig) );
     Saig_ManForEachLo( pAig, pObj, i )
+    {
+//printf( "%d", pObj->fMarkB );
         Vec_IntPush( vInit, pObj->fMarkB );
+    }
+//printf( "\n" );
+    Aig_ManCleanMarkB( pAig );
     return vInit;
 }
 
@@ -975,7 +980,10 @@ int Ssw_RarSignalFilter( Aig_Man_t * pAig, int nFrames, int nWords, int nBinSize
     // compute starting state if needed
     assert( p->vInits == NULL );
     if ( pCex )
+    {
         p->vInits = Ssw_RarFindStartingState( pAig, pCex );
+        printf( "Beginning simulation from the state derived using the counter-example.\n" );
+    }
     else
         p->vInits = Vec_IntStart( Aig_ManRegNum(pAig) );
     // duplicate the array

src/base/abci/abc.c

@@ -25438,6 +25438,11 @@ int Abc_CommandAbc9Equiv3( Abc_Frame_t * pAbc, int argc, char ** argv )
     }
     if ( fUseCex )
     {
+        if ( pAbc->pCex == NULL )
+        {
+            Abc_Print( 0, "Abc_CommandAbc9Equiv3(): Counter-example is not available.\n" );
+            return 0;
+        }
         if ( pAbc->pCex->nPis != Gia_ManPiNum(pAbc->pGia) )
         {
             Abc_Print( -1, "Abc_CommandAbc9Equiv3(): The number of PIs differs in cex (%d) and in AIG (%d).\n", 
@@ -25450,7 +25455,8 @@ int Abc_CommandAbc9Equiv3( Abc_Frame_t * pAbc, int argc, char ** argv )
 //    else
 //        pAbc->Status = Ssw_RarSignalFilterGia2( pAbc->pGia, nFrames, nWords, nBinSize, nRounds, TimeOut, fUseCex? pAbc->pCex: NULL, fLatchOnly, fVerbose );
 //    pAbc->nFrames = pAbc->pGia->pCexSeq->iFrame;
-    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
+    if ( pAbc->pGia->pCexSeq )
+        Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
     return 0;
 
 usage: