Add more statistics

This adds the following statistics: the number of state variables before
and after preprocessing, the number of ground actions before and after
preprocessing, and the maximum size of a strongly connected component.

main.c

@@ -35,6 +35,14 @@
 #include <omp.h>
 #endif
 
+int numberOfGroundActionsAfterParsing = -1;
+int numberOfStateVariablesAfterParsing = -1;
+
+int numberOfGroundActionsAfterSimplification = -1;
+int numberOfStateVariablesAfterSimplification = -1;
+
+int maxSizeOfStronglyConnectedComponents = -1;
+
 char state_for_random[256];
 char dump_for_random[256];
 
@@ -211,6 +219,18 @@ void printStatistics()
 
   printf("maxLearnedClauseLength: %i\n",stats_longest_learned);
 
+  if (numberOfGroundActionsAfterParsing > -1)
+    printf("groundActions:\n  afterParsing: %i\n",numberOfGroundActionsAfterParsing);
+  if (numberOfGroundActionsAfterSimplification > -1)
+    printf("  afterPreprocessing: %i\n",numberOfGroundActionsAfterSimplification);
+  if (numberOfStateVariablesAfterParsing > -1)
+    printf("stateVariables:\n  afterParsing: %i\n",numberOfStateVariablesAfterParsing);
+  if (numberOfStateVariablesAfterSimplification > -1)
+    printf("  afterPreprocessing: %i\n",numberOfStateVariablesAfterSimplification);
+
+  if (maxSizeOfStronglyConnectedComponents > -1)
+    printf("stronglyConnectedComponents:\n  maxSize: %i\n",maxSizeOfStronglyConnectedComponents);
+
   int solutionIndex = -1;
 
   for (int i = 0; seqs[i].sati; i++)
@@ -718,6 +738,9 @@ int main(int argc,char **argv) {
 
    NEWgroundoperators();
   
+   numberOfGroundActionsAfterParsing = nOfActions;
+   numberOfStateVariablesAfterParsing = nOfAtoms;
+
    printf("Parser: %i ground actions and %i state variables\n",nOfActions,nOfAtoms);
 
    if(flagShowInput) {
@@ -754,6 +777,9 @@ int main(int argc,char **argv) {
 
   if(flagEliminateConverses) mergecontras();
 
+  numberOfGroundActionsAfterSimplification = nOfActions;
+  numberOfStateVariablesAfterSimplification = nOfAtoms;
+
   printf("Simplified: %i ground actions and %i state variables\n",nOfActions,nOfAtoms);
 
   sortactions();
@@ -786,6 +812,7 @@ int main(int argc,char **argv) {
     int maxsize;
     TIMEdisabling = time10ms();
     maxsize = scc(nOfActions);
+    maxSizeOfStronglyConnectedComponents = maxsize;
     printf(" %.2f secs (max SCC size %i)\n",time2real(time10ms() - TIMEdisabling),maxsize);
   }