Program: 24466
Project: 24466
Buggy source:
/** 
 * Converts a Giraph Scenario (giraphScenarioWrapper object) to JSON (JSONObject)
 * @param giraphScenarioWrapper Giraph Scenario object.
 * @return scenario data stored as json.
 */
public static JSONObject scenarioToJSON(GiraphVertexScenarioWrapper giraphScenarioWrapper) throws JSONException {
  VertexContextWrapper contextWrapper=giraphScenarioWrapper.getContextWrapper();
  JSONObject scenarioObj=new JSONObject();
  scenarioObj.put("String_Node_Str",contextWrapper.getVertexIdWrapper());
  scenarioObj.put("String_Node_Str",contextWrapper.getVertexValueAfterWrapper());
  JSONObject outgoingMessagesObj=new JSONObject();
  JSONArray neighborsList=new JSONArray();
  for (  Object outgoingMessage : contextWrapper.getOutgoingMessageWrappers()) {
    OutgoingMessageWrapper outgoingMessageWrapper=(OutgoingMessageWrapper)outgoingMessage;
    outgoingMessagesObj.put(outgoingMessageWrapper.destinationId.toString(),outgoingMessageWrapper.message.toString());
  }
  ArrayList<String> incomingMessagesList=new ArrayList<String>();
  for (  Object incomingMessage : contextWrapper.getIncomingMessageWrappers()) {
    incomingMessagesList.add(incomingMessage.toString());
  }
  for (  Object neighbor : contextWrapper.getNeighborWrappers()) {
    JSONObject neighborObject=new JSONObject();
    NeighborWrapper neighborWrapper=(NeighborWrapper)neighbor;
    neighborObject.put("String_Node_Str",neighborWrapper.getNbrId());
    neighborObject.put("String_Node_Str",neighborWrapper.getEdgeValue());
    neighborsList.put(neighborObject);
  }
  scenarioObj.put("String_Node_Str",outgoingMessagesObj);
  scenarioObj.put("String_Node_Str",incomingMessagesList);
  scenarioObj.put("String_Node_Str",neighborsList);
  if (giraphScenarioWrapper.hasExceptionWrapper()) {
    JSONObject exceptionObj=new JSONObject();
    ExceptionWrapper exceptionWrapper=giraphScenarioWrapper.getExceptionWrapper();
    exceptionObj.put("String_Node_Str",exceptionWrapper.getErrorMessage());
    exceptionObj.put("String_Node_Str",exceptionWrapper.getStackTrace());
    scenarioObj.put("String_Node_Str",exceptionObj);
  }
  JSONObject aggregateObj=new JSONObject();
  for (  Object aggregatedValue : contextWrapper.getCommonVertexMasterContextWrapper().getPreviousAggregatedValues()) {
    AggregatedValueWrapper aggregatedValueWrapper=(AggregatedValueWrapper)aggregatedValue;
    aggregateObj.put(aggregatedValueWrapper.getKey(),aggregatedValueWrapper.getValue());
  }
  scenarioObj.put("String_Node_Str",aggregateObj);
  return scenarioObj;
}

Fixed version (ground truth):
/** 
 * Converts a Giraph Scenario (giraphScenarioWrapper object) to JSON (JSONObject)
 * @param giraphScenarioWrapper Giraph Scenario object.
 * @return scenario data stored as json.
 */
public static JSONObject scenarioToJSON(GiraphVertexScenarioWrapper giraphScenarioWrapper) throws JSONException {
  VertexContextWrapper contextWrapper=giraphScenarioWrapper.getContextWrapper();
  JSONObject scenarioObj=new JSONObject();
  scenarioObj.put("String_Node_Str",contextWrapper.getVertexIdWrapper());
  scenarioObj.put("String_Node_Str",contextWrapper.getVertexValueAfterWrapper());
  JSONObject outgoingMessagesObj=new JSONObject();
  JSONArray neighborsList=new JSONArray();
  for (  Object outgoingMessage : contextWrapper.getOutgoingMessageWrappers()) {
    OutgoingMessageWrapper outgoingMessageWrapper=(OutgoingMessageWrapper)outgoingMessage;
    outgoingMessagesObj.put(outgoingMessageWrapper.getDestinationId().toString(),outgoingMessageWrapper.getMessage().toString());
  }
  ArrayList<String> incomingMessagesList=new ArrayList<String>();
  for (  Object incomingMessage : contextWrapper.getIncomingMessageWrappers()) {
    incomingMessagesList.add(incomingMessage.toString());
  }
  for (  Object neighbor : contextWrapper.getNeighborWrappers()) {
    JSONObject neighborObject=new JSONObject();
    NeighborWrapper neighborWrapper=(NeighborWrapper)neighbor;
    neighborObject.put("String_Node_Str",neighborWrapper.getNbrId());
    neighborObject.put("String_Node_Str",neighborWrapper.getEdgeValue());
    neighborsList.put(neighborObject);
  }
  scenarioObj.put("String_Node_Str",outgoingMessagesObj);
  scenarioObj.put("String_Node_Str",incomingMessagesList);
  scenarioObj.put("String_Node_Str",neighborsList);
  if (giraphScenarioWrapper.hasExceptionWrapper()) {
    JSONObject exceptionObj=new JSONObject();
    ExceptionWrapper exceptionWrapper=giraphScenarioWrapper.getExceptionWrapper();
    exceptionObj.put("String_Node_Str",exceptionWrapper.getErrorMessage());
    exceptionObj.put("String_Node_Str",exceptionWrapper.getStackTrace());
    scenarioObj.put("String_Node_Str",exceptionObj);
  }
  JSONObject aggregateObj=new JSONObject();
  for (  Object aggregatedValue : contextWrapper.getCommonVertexMasterContextWrapper().getPreviousAggregatedValues()) {
    AggregatedValueWrapper aggregatedValueWrapper=(AggregatedValueWrapper)aggregatedValue;
    aggregateObj.put(aggregatedValueWrapper.getKey(),aggregatedValueWrapper.getValue());
  }
  scenarioObj.put("String_Node_Str",aggregateObj);
  return scenarioObj;
}