Program: 63198
Project: 63198
Buggy source:
/** 
 * Based on scenario list, it will perform transfer packet or receive packet, then it will report the test result.
 * @param listScenario list of packet scenario
 * @return test result(counts of succeed and failure)
 */
private ScenarioExecutionResult execute(final List<ScenarioUnit> listScenario) throws SuspendExecution {
  ReportHandler reportHandler=new ReportHandler();
  int succeedCount=0;
  int failureCount=0;
  List<Integer> previousLoopStartIdx=new ArrayList<>();
  List<Integer> loopCountList=new ArrayList<>();
  int loopDepth=-1;
  ScenarioExecutionResult result=new ScenarioExecutionResult();
  Instant requestTime=Instant.now();
  Instant responseTime;
  String originalJson;
  if (Config.obj().getCustomScenarioAPI().isUse()) {
    ApiLoader.obj().initialize(PacketClassPool.obj(),listCommunication,runtimeVar,userId);
  }
  try {
    for (int scenarioIdx=0; scenarioIdx < listScenario.size(); scenarioIdx++) {
      ScenarioUnit scenario=listScenario.get(scenarioIdx);
      if (logger.isDebugEnabled()) {
        logger.debug("String_Node_Str" + "String_Node_Str" + scenario.type + "String_Node_Str"+ scenario.name+ "String_Node_Str"+ "String_Node_Str"+ scenario.dest+ "String_Node_Str"+ scenario.subId+ "String_Node_Str"+ "String_Node_Str"+ scenario.json);
      }
      if (scenario.type.equals(ScenarioUnitType.SetCardDeck)) {
        JMXClient.obj().setCardDeck(scenario.json);
        logger.info("String_Node_Str");
        logger.info("String_Node_Str");
        logger.info("String_Node_Str");
        logger.debug("String_Node_Str",scenario.json);
        continue;
      }
      if (scenario.type.equals(ScenarioUnitType.SetQaCommand)) {
        JMXClient.obj().setQaCommand(scenario.json);
        logger.info("String_Node_Str");
        logger.info("String_Node_Str");
        logger.info("String_Node_Str");
        logger.debug("String_Node_Str",scenario.json);
        continue;
      }
      if (scenario.loopType == LoopType.LoopStart) {
        if (scenario.loopDepth != loopDepth) {
          loopDepth=scenario.loopDepth;
          previousLoopStartIdx.add(scenarioIdx);
          loopCountList.add(scenario.loopCount);
          logger.debug("String_Node_Str");
        }
        continue;
      }
      if (scenario.loopType == LoopType.LoopEnd) {
        int currentLoopCount=loopCountList.get(loopDepth) - 1;
        if (currentLoopCount < 1) {
          loopCountList.remove(loopDepth);
          previousLoopStartIdx.remove(loopDepth);
          loopDepth--;
          logger.debug("String_Node_Str");
        }
 else {
          loopCountList.set(loopDepth,currentLoopCount);
          scenarioIdx=previousLoopStartIdx.get(scenario.loopDepth);
          if (logger.isDebugEnabled())           logger.debug("String_Node_Str" + currentLoopCount + "String_Node_Str"+ scenarioIdx);
        }
        continue;
      }
      if (scenario.type.equals(ScenarioUnitType.Sleep)) {
        if (logger.isDebugEnabled())         logger.debug("String_Node_Str",scenario.sleepPeriod);
        Strand.sleep(scenario.sleepPeriod);
        continue;
      }
      if (scenario.type.equals(ScenarioUnitType.Print)) {
        logger.info("String_Node_Str",scenario.reservedField);
        continue;
      }
      if (scenario.type.equals(ScenarioUnitType.ExtraFunctionCall)) {
        if (ApiLoader.obj().executeExtraFunction(result,userId,scenario).equals(Boolean.FALSE)) {
          if (loopDepth >= 0) {
            int currentLoopCount=loopCountList.get(loopDepth) - 1;
            logger.warn("String_Node_Str",currentLoopCount,loopDepth);
            if (currentLoopCount >= 0) {
              int tmpScenarioIdx=scenarioIdx + 1;
              while (true) {
                ScenarioUnit tmpScenario=listScenario.get(tmpScenarioIdx);
                if (tmpScenario.loopType == LoopType.LoopEnd && tmpScenario.loopDepth == loopDepth) {
                  scenarioIdx=tmpScenarioIdx - 1;
                  break;
                }
                tmpScenarioIdx++;
              }
            }
            if (loopDepth > 0) {
              logger.warn("String_Node_Str");
            }
 else {
              logger.warn("String_Node_Str");
            }
          }
        }
        continue;
      }
      if (scenario.json.contains(UsingVariableDelimiter)) {
        originalJson=scenario.json;
        scenario.json=applyVariable(runtimeVar,scenario.json);
      }
 else {
        originalJson=EmptyString;
      }
      for (      IBaseCommunication communication : listCommunication) {
        if (communication.isRegisteredScenarioType(scenario.type)) {
switch (scenario.communicationMethod) {
case CommunicationMethod.Request:
            requestTime=Instant.now();
          communication.execute(scenario);
        break;
case CommunicationMethod.Response:
      Boolean isSucceed=communication.compareWithRealResponse(scenario);
    if (isSucceed) {
      if (scenario.type.equals(ScenarioUnitType.Response)) {
        responseTime=Instant.now();
        result.listResponseTime.add(Duration.between(requestTime,responseTime));
      }
      succeedCount++;
    }
 else     failureCount++;
  break;
default :
logger.error("String_Node_Str" + scenario.type);
break;
}
}
}
if (!originalJson.equals(EmptyString)) {
scenario.json=originalJson;
}
}
StatisticsResult statisticsResult=null;
result.succeedCount+=succeedCount;
result.failureCount+=failureCount;
reportHandler.writeLogForFinalResult(result.succeedCount,result.failureCount);
statisticsResult=reportHandler.writeLogForStatisticsResult(result.listResponseTime);
result.statisticsResult=statisticsResult;
}
 catch (Exception e) {
logger.error(ExceptionUtils.getStackTrace(e));
}
return result;
}

Fixed version (ground truth):
/** 
 * Based on scenario list, it will perform transfer packet or receive packet, then it will report the test result.
 * @param listScenario list of packet scenario
 * @return test result(counts of succeed and failure)
 */
private ScenarioExecutionResult execute(final List<ScenarioUnit> listScenario) throws SuspendExecution {
  ReportHandler reportHandler=new ReportHandler();
  int succeedCount=0;
  int failureCount=0;
  List<Integer> previousLoopStartIdx=new ArrayList<>();
  List<Integer> loopCountList=new ArrayList<>();
  int loopDepth=-1;
  ScenarioExecutionResult result=new ScenarioExecutionResult();
  Instant requestTime=Instant.now();
  Instant responseTime;
  String originalJson;
  if (Config.obj().getCustomScenarioAPI().isUse()) {
    ApiLoader.obj().initialize(PacketClassPool.obj(),listCommunication,runtimeVar,userId);
  }
  try {
    for (int scenarioIdx=0; scenarioIdx < listScenario.size(); scenarioIdx++) {
      ScenarioUnit scenario=listScenario.get(scenarioIdx);
      if (logger.isDebugEnabled()) {
        logger.debug("String_Node_Str" + "String_Node_Str" + scenario.type + "String_Node_Str"+ scenario.name+ "String_Node_Str"+ "String_Node_Str"+ scenario.dest+ "String_Node_Str"+ scenario.subId+ "String_Node_Str"+ "String_Node_Str"+ scenario.json);
      }
      if (scenario.type.equals(ScenarioUnitType.SetCardDeck)) {
        JMXClient.obj().setCardDeck(scenario.json);
        logger.info("String_Node_Str");
        logger.info("String_Node_Str");
        logger.info("String_Node_Str");
        logger.debug("String_Node_Str",scenario.json);
        continue;
      }
      if (scenario.type.equals(ScenarioUnitType.SetQaCommand)) {
        JMXClient.obj().setQaCommand(scenario.json);
        logger.info("String_Node_Str");
        logger.info("String_Node_Str");
        logger.info("String_Node_Str");
        logger.debug("String_Node_Str",scenario.json);
        continue;
      }
      if (scenario.loopType == LoopType.LoopStart) {
        if (scenario.loopDepth != loopDepth) {
          loopDepth=scenario.loopDepth;
          previousLoopStartIdx.add(scenarioIdx);
          loopCountList.add(scenario.loopCount);
          logger.debug("String_Node_Str");
        }
        continue;
      }
      if (scenario.loopType == LoopType.LoopEnd) {
        int currentLoopCount=loopCountList.get(loopDepth) - 1;
        if (currentLoopCount < 1) {
          loopCountList.remove(loopDepth);
          previousLoopStartIdx.remove(loopDepth);
          loopDepth--;
          logger.debug("String_Node_Str");
        }
 else {
          loopCountList.set(loopDepth,currentLoopCount);
          scenarioIdx=previousLoopStartIdx.get(scenario.loopDepth);
          if (logger.isDebugEnabled())           logger.debug("String_Node_Str" + currentLoopCount + "String_Node_Str"+ scenarioIdx);
        }
        continue;
      }
      if (scenario.type.equals(ScenarioUnitType.Sleep)) {
        if (logger.isDebugEnabled())         logger.debug("String_Node_Str",scenario.sleepPeriod);
        Strand.sleep(scenario.sleepPeriod);
        continue;
      }
      if (scenario.type.equals(ScenarioUnitType.Print)) {
        logger.info("String_Node_Str",scenario.reservedField);
        continue;
      }
      if (scenario.type.equals(ScenarioUnitType.ExtraFunctionCall)) {
        if (ApiLoader.obj().executeExtraFunction(result,userId,scenario).equals(Boolean.FALSE)) {
          if (loopDepth >= 0) {
            int currentLoopCount=loopCountList.get(loopDepth) - 1;
            logger.warn("String_Node_Str",currentLoopCount,loopDepth);
            if (currentLoopCount >= 0) {
              int tmpScenarioIdx=scenarioIdx + 1;
              while (true) {
                ScenarioUnit tmpScenario=listScenario.get(tmpScenarioIdx);
                if (tmpScenario.loopType == LoopType.LoopEnd && tmpScenario.loopDepth == loopDepth) {
                  scenarioIdx=tmpScenarioIdx - 1;
                  break;
                }
                tmpScenarioIdx++;
              }
            }
            if (loopDepth > 0) {
              logger.warn("String_Node_Str");
            }
 else {
              logger.warn("String_Node_Str");
            }
          }
        }
        continue;
      }
      if (scenario.json.contains(UsingVariableDelimiter)) {
        originalJson=scenario.json;
        scenario.json=applyVariable(runtimeVar,scenario.json);
      }
 else {
        originalJson=EmptyString;
      }
      for (      IBaseCommunication communication : listCommunication) {
        if (communication.isRegisteredScenarioType(scenario.type)) {
switch (scenario.communicationMethod) {
case CommunicationMethod.Request:
            requestTime=Instant.now();
          communication.execute(scenario);
        break;
case CommunicationMethod.Response:
      Boolean isSucceed=communication.compareWithRealResponse(scenario);
    if (isSucceed) {
      responseTime=Instant.now();
      result.listResponseTime.add(Duration.between(requestTime,responseTime));
      succeedCount++;
    }
 else     failureCount++;
  break;
default :
logger.error("String_Node_Str" + scenario.type);
break;
}
}
}
if (!originalJson.equals(EmptyString)) {
scenario.json=originalJson;
}
}
StatisticsResult statisticsResult=null;
result.succeedCount+=succeedCount;
result.failureCount+=failureCount;
reportHandler.writeLogForFinalResult(result.succeedCount,result.failureCount);
statisticsResult=reportHandler.writeLogForStatisticsResult(result.listResponseTime);
result.statisticsResult=statisticsResult;
}
 catch (Exception e) {
logger.error(ExceptionUtils.getStackTrace(e));
}
return result;
}