Print plan statistics only if plan found

main.c

@@ -222,6 +222,14 @@ void printStatistics()
     break;
   }
 
+  printf("plan:\n  found: ");
+
+  if (solutionIndex < 0)
+    printf("false\n");
+  else
+  {
+    printf("true\n");
+
     const auto planLength = seqs[solutionIndex].sati->nOfTPoints - 1;
 
     int numberOfActions = 0;
@@ -233,7 +241,8 @@ void printStatistics()
         if (vartruep(sati,TACT(i,t)))
           numberOfActions++;
 
-  printf("plan:\n  length: %i\n  actions: %i\n", planLength, numberOfActions);
+    printf("  length: %i\n  actions: %i\n", planLength, numberOfActions);
+  }
 
   if(flagOutputDIMACS == 0) {
     printf("iterations:\n");