Making report about the number of correcty covered frames consistent across the engines.

src/aig/saig/saigBmc2.c

@@ -833,7 +833,7 @@ int Saig_BmcPerform( Aig_Man_t * pAig, int nStart, int nFramesMax, int nNodesMax
                 p->iOutputFail, p->pAig->pName, p->iFrameFail );
         Status = 0;
         if ( piFrames )
-            *piFrames = p->iFrameFail;
+            *piFrames = p->iFrameFail - 1;
     }
     else // if ( RetValue == l_False || RetValue == l_Undef )
     {
@@ -842,9 +842,9 @@ int Saig_BmcPerform( Aig_Man_t * pAig, int nStart, int nFramesMax, int nNodesMax
         if ( piFrames )
         {
             if ( p->iOutputLast > 0 )
-                *piFrames = p->iFramePrev - 1;
+                *piFrames = p->iFramePrev - 2;
             else
-                *piFrames = p->iFramePrev;
+                *piFrames = p->iFramePrev - 1;
         }
     }
     if ( !fSilent )

src/aig/saig/saigBmc3.c

@@ -1551,7 +1551,7 @@ clkOther += clock() - clk2;
     if ( nJumpFrame && pPars->nStart == 0 )
         pPars->iFrame = nJumpFrame - pPars->nFramesJump;
     else if ( RetValue == -1 && pPars->nStart == 0 )
-        pPars->iFrame = f;
+        pPars->iFrame = f-1;
 //ABC_PRT( "CNF generation runtime", clkOther );
     if ( pPars->fVerbose )
     {

src/proof/int/intCore.c

@@ -97,7 +97,7 @@ int Inter_ManPerformInterpolation( Aig_Man_t * pAig, Inter_ManParams_t * pPars,
 
     if ( Inter_ManCheckInitialState(pAig) )
     {
-        *piFrame = 0;
+        *piFrame = -1;
         printf( "Property trivially fails in the initial state.\n" );
         return 0;
     }
@@ -223,7 +223,7 @@ p->timeEqu += clock() - clk;
                 ABC_PRT( "Time", clock() - clk );
             }
             // remember the number of timeframes completed
-            pPars->iFrameMax = i + 1 + p->nFrames;
+            pPars->iFrameMax = i - 1 + p->nFrames;
             if ( RetValue == 0 ) // found a (spurious?) counter-example
             {
                 if ( i == 0 ) // real counterexample

src/proof/pdr/pdrCore.c

@@ -709,6 +709,7 @@ int Pdr_ManSolve_( Aig_Man_t * pAig, Pdr_Par_t * pPars, Vec_Int_t ** pvPrioInit,
         p->vPrio = NULL;
     }
     Pdr_ManStop( p );
+    pPars->iFrame--;
     return RetValue;
 }