Program: 50206
Project: 50206
Buggy source:
@Override public Evaluation evaluate(Path arg0){
  Node tn=arg0.endNode();
  if (visited.contains(tn.getId())) {
    return Evaluation.EXCLUDE_AND_PRUNE;
  }
  visited.add(tn.getId());
  TLongArrayList ttm=new TLongArrayList((long[])tn.getProperty("String_Node_Str"));
  BitSet tm=new BitSet((int)ttm.max());
  for (int i=0; i < ttm.size(); i++) {
    tm.set((int)ttm.getQuick(i));
  }
  boolean taxnode=false;
  BitSet to=null;
  TLongArrayList tto=null;
  if (tn.hasProperty("String_Node_Str") == false) {
    taxnode=true;
  }
 else {
    tto=new TLongArrayList((long[])tn.getProperty("String_Node_Str"));
    to=new BitSet((int)tto.max());
    for (int i=0; i < tto.size(); i++) {
      to.set((int)tto.getQuick(i));
    }
  }
  if (taxnode == false) {
    if (tm.intersects(outIdBS) == false) {
      if (to.intersects(inIdBS) == false) {
        if (tm.intersects(inIdBS) == true) {
          boolean tmt=false;
          boolean checkParents=false;
          BitSet inIdBS2=(BitSet)inIdBS.clone();
          inIdBS2.andNot(tm);
          for (int i=0; i < inIdBS2.length(); i++) {
            if (inIdBS2.get(i) == true) {
              ttm.add(i);
              tmt=true;
            }
          }
          if (tmt) {
            ttm.sort();
            tn.setProperty("String_Node_Str",ttm.toArray());
            checkParents=true;
          }
          tmt=false;
          BitSet outIdBS2=(BitSet)outIdBS.clone();
          outIdBS2.andNot(to);
          for (int i=0; i < outIdBS2.length(); i++) {
            if (outIdBS2.get(i) == true) {
              tto.add(i);
              tmt=true;
            }
          }
          if (tmt) {
            tto.sort();
            tn.setProperty("String_Node_Str",tto.toArray());
            checkParents=true;
          }
          if (checkParents) {
            for (            Node pNode : Traversal.description().breadthFirst().evaluator(new MRCAValidatingEvaluator(ttm,tto)).relationships(RelType.STREECHILDOF,Direction.OUTGOING).traverse(tn).nodes()) {
              System.out.println("String_Node_Str" + pNode + "String_Node_Str");
              pNode.setProperty("String_Node_Str",ttm.toArray());
              pNode.setProperty("String_Node_Str",tto.toArray());
            }
          }
          return Evaluation.INCLUDE_AND_PRUNE;
        }
      }
    }
  }
 else {
    if (outIdBS.intersects(tm) == false) {
      tm.and(inIdBS);
      if (inIdBS.cardinality() == tm.cardinality()) {
        return Evaluation.INCLUDE_AND_PRUNE;
      }
    }
  }
  return Evaluation.EXCLUDE_AND_CONTINUE;
}

Fixed version (ground truth):
@Override public Evaluation evaluate(Path arg0){
  Node tn=arg0.endNode();
  if (visited.contains(tn.getId())) {
    return Evaluation.EXCLUDE_AND_PRUNE;
  }
  visited.add(tn.getId());
  TLongArrayList ttm=new TLongArrayList((long[])tn.getProperty("String_Node_Str"));
  BitSet tm=new BitSet((int)ttm.max());
  for (int i=0; i < ttm.size(); i++) {
    tm.set((int)ttm.getQuick(i));
  }
  boolean taxnode=false;
  BitSet to=null;
  TLongArrayList tto=null;
  if (tn.hasProperty("String_Node_Str") == false) {
    taxnode=true;
  }
 else {
    tto=new TLongArrayList((long[])tn.getProperty("String_Node_Str"));
    to=new BitSet((int)tto.max());
    for (int i=0; i < tto.size(); i++) {
      to.set((int)tto.getQuick(i));
    }
  }
  if (taxnode == false) {
    if (tm.intersects(outIdBS) == false) {
      if (to.intersects(inIdBS) == false) {
        if (tm.intersects(inIdBS) == true) {
          boolean tmt=false;
          boolean checkParents=false;
          BitSet inIdBS2=(BitSet)inIdBS.clone();
          inIdBS2.andNot(tm);
          for (int i=0; i < inIdBS2.length(); i++) {
            if (inIdBS2.get(i) == true) {
              ttm.add(i);
              tmt=true;
            }
          }
          if (tmt) {
            ttm.sort();
            tn.setProperty("String_Node_Str",ttm.toArray());
            checkParents=true;
          }
          tmt=false;
          BitSet outIdBS2=(BitSet)outIdBS.clone();
          outIdBS2.andNot(to);
          for (int i=0; i < outIdBS2.length(); i++) {
            if (outIdBS2.get(i) == true) {
              tto.add(i);
              tmt=true;
            }
          }
          if (tmt) {
            tto.sort();
            tn.setProperty("String_Node_Str",tto.toArray());
            checkParents=true;
          }
          if (checkParents) {
            for (            Node pNode : Traversal.description().breadthFirst().evaluator(new MRCAValidatingEvaluator(ttm,tto)).relationships(RelType.STREECHILDOF,Direction.OUTGOING).traverse(tn).nodes()) {
              System.out.println("String_Node_Str" + pNode + "String_Node_Str");
              pNode.setProperty("String_Node_Str",ttm.toArray());
              TLongArrayList ingroupIds=new TLongArrayList();
              for (              Relationship childRel : pNode.getRelationships(RelType.STREECHILDOF,Direction.INCOMING)) {
                ingroupIds.addAll((long[])childRel.getStartNode().getProperty("String_Node_Str"));
              }
              tto.removeAll(ingroupIds);
              pNode.setProperty("String_Node_Str",tto.toArray());
            }
          }
          return Evaluation.INCLUDE_AND_PRUNE;
        }
      }
    }
  }
 else {
    if (outIdBS.intersects(tm) == false) {
      tm.and(inIdBS);
      if (inIdBS.cardinality() == tm.cardinality()) {
        return Evaluation.INCLUDE_AND_PRUNE;
      }
    }
  }
  return Evaluation.EXCLUDE_AND_CONTINUE;
}