Improving printouts of critical path.

src/base/abci/abcTiming.c

@@ -932,15 +932,15 @@ float Abc_NtkDelayTrace( Abc_Ntk_t * pNtk, Abc_Obj_t * pOut, Abc_Obj_t * pIn, in
                     printf( "I/O time: (" );
                     Abc_ObjForEachFanin( pNode, pFanin, k )
                         printf( "%s%.1f", (k? ", ":""), Abc_NodeReadArrival(pFanin)->Worst );
-                    if ( Abc_NodeReadRequired(pNode)->Worst == -ABC_INFINITY )
-                        printf( " -> ?)" );
-                    else
-                        printf( " -> %.1f)", Abc_NodeReadRequired(pNode)->Worst );
+                    printf( " -> %.1f)", Abc_NodeReadArrival(pNode)->Worst + Slack );
                 }
                 printf( "\n" );
             }
             printf( "Level %3d : ", Abc_ObjLevel(Abc_ObjFanin0(pOut)) + 1 );
             printf( "Primary output \"%s\".   ", Abc_ObjName(pOut) );
+            if ( Abc_NodeRequired(pOut)->Worst == 0.0 )
+                printf( "Required time = %6.1f.  ", Abc_NodeReadArrival(Abc_ObjFanin0(pOut))->Worst );
+            else
                 printf( "Required time = %6.1f.  ", Abc_NodeRequired(pOut)->Worst );
             printf( "Path slack = %6.1f.\n", Slack );
         }

src/map/mapper/mapperTime.c

@@ -253,7 +253,7 @@ void Map_TimeComputeRequired( Map_Man_t * p, float fRequired )
         ptTimeA =  Map_Regular(p->pOutputs[i])->tArrival + fPhase;
 
         // if external required time can be achieved, use it
-        if ( p->pOutputRequireds && p->pOutputRequireds[i].Worst > 0 && ptTimeA->Worst <= p->pOutputRequireds[i].Worst && p->pOutputRequireds[i].Worst <= fRequired )
+        if ( p->pOutputRequireds && p->pOutputRequireds[i].Worst > 0 && ptTimeA->Worst <= p->pOutputRequireds[i].Worst )//&& p->pOutputRequireds[i].Worst <= fRequired )
             ptTime->Rise = ptTime->Fall = ptTime->Worst = p->pOutputRequireds[i].Worst;
         // if external required cannot be achieved, set the earliest possible arrival time
         else if ( p->pOutputRequireds && p->pOutputRequireds[i].Worst > 0 && ptTimeA->Worst > p->pOutputRequireds[i].Worst )