Program: 160242
Project: 160242
Buggy source:
@Override public MockResponse dispatch(RecordedRequest request) throws InterruptedException {
  for (  String pathRegex : queueMap.keySet()) {
    if (regexMatches(pathRegex,request.getPath())) {
      recordRequest(pathRegex,request);
      BlockingQueue<SmartMockResponse> responseQueue=queueMap.get(pathRegex);
      if (responseQueue == null) {
        String msg=String.format(Locale.ENGLISH,"String_Node_Str",pathRegex);
        throw new RuntimeException(msg);
      }
      if (!responseQueue.isEmpty()) {
        SmartMockResponse smartMockResponse=null;
synchronized (lockResponseQueue) {
          smartMockResponse=responseQueue.take();
          if (smartMockResponse.isSticky()) {
            responseQueue.put(smartMockResponse);
          }
        }
        if (smartMockResponse.delayMs() > 0) {
          long delay=smartMockResponse.delayMs();
          while (delay > 0 && !shutdown) {
            Thread.sleep(100);
            delay-=100;
          }
        }
        MockResponse mockResponse=smartMockResponse.generateMockResponse(request);
        addHeaders(mockResponse);
        recordedReponseMap.put(request,mockResponse);
        return mockResponse;
      }
 else {
        MockResponse mockResponse=new MockResponse();
        mockResponse.setStatus("String_Node_Str");
        recordedReponseMap.put(request,mockResponse);
        return mockResponse;
      }
    }
  }
  MockResponse mockResponse=new MockResponse();
  mockResponse.setStatus("String_Node_Str");
  recordedReponseMap.put(request,mockResponse);
  return mockResponse;
}

Fixed version (ground truth):
@Override public MockResponse dispatch(RecordedRequest request) throws InterruptedException {
  for (  String pathRegex : queueMap.keySet()) {
    if (regexMatches(pathRegex,request.getPath())) {
      recordRequest(pathRegex,request);
      BlockingQueue<SmartMockResponse> responseQueue=queueMap.get(pathRegex);
      if (responseQueue == null) {
        String msg=String.format(Locale.ENGLISH,"String_Node_Str",pathRegex);
        throw new RuntimeException(msg);
      }
      if (!isResponseQueueEmpty(responseQueue)) {
        SmartMockResponse smartMockResponse=null;
synchronized (lockResponseQueue) {
          smartMockResponse=responseQueue.take();
          if (smartMockResponse.isSticky()) {
            responseQueue.put(smartMockResponse);
          }
        }
        if (smartMockResponse.delayMs() > 0) {
          long delay=smartMockResponse.delayMs();
          while (delay > 0 && !shutdown) {
            Thread.sleep(100);
            delay-=100;
          }
        }
        MockResponse mockResponse=smartMockResponse.generateMockResponse(request);
        addHeaders(mockResponse);
        recordedReponseMap.put(request,mockResponse);
        return mockResponse;
      }
 else {
        MockResponse mockResponse=new MockResponse();
        mockResponse.setStatus("String_Node_Str");
        recordedReponseMap.put(request,mockResponse);
        return mockResponse;
      }
    }
  }
  MockResponse mockResponse=new MockResponse();
  mockResponse.setStatus("String_Node_Str");
  recordedReponseMap.put(request,mockResponse);
  return mockResponse;
}