Program: 62485
Project: 62485
Buggy source:
protected String invokeAndParse(String command,String payLoad,WebTarget target){
  logger.debug("String_Node_Str",command);
  if (vehicle.id != null) {
    Response response;
    if (payLoad != null) {
      if (command != null) {
        response=target.resolveTemplate("String_Node_Str",command).resolveTemplate("String_Node_Str",vehicle.id).request().header("String_Node_Str","String_Node_Str" + logonToken.access_token).post(Entity.entity(payLoad,MediaType.APPLICATION_JSON_TYPE));
      }
 else {
        response=target.resolveTemplate("String_Node_Str",vehicle.id).request().header("String_Node_Str","String_Node_Str" + logonToken.access_token).post(Entity.entity(payLoad,MediaType.APPLICATION_JSON_TYPE));
      }
    }
 else {
      if (command != null) {
        response=target.resolveTemplate("String_Node_Str",command).resolveTemplate("String_Node_Str",vehicle.id).request(MediaType.APPLICATION_JSON_TYPE).header("String_Node_Str","String_Node_Str" + logonToken.access_token).get();
      }
 else {
        response=target.resolveTemplate("String_Node_Str",vehicle.id).request(MediaType.APPLICATION_JSON_TYPE).header("String_Node_Str","String_Node_Str" + logonToken.access_token).get();
      }
    }
    JsonParser parser=new JsonParser();
    if (response != null && response.getStatus() == 200) {
      try {
        JsonObject jsonObject=parser.parse(response.readEntity(String.class)).getAsJsonObject();
        logger.trace("String_Node_Str",new Object[]{command,payLoad,target.toString(),jsonObject.get("String_Node_Str").toString()});
        return jsonObject.get("String_Node_Str").toString();
      }
 catch (      Exception e) {
        logger.error("String_Node_Str",e.getMessage());
      }
    }
 else {
      logger.error("String_Node_Str",new Object[]{command,(response != null) ? response.getStatus() : "String_Node_Str",(response != null) ? response.getStatusInfo() : "String_Node_Str"});
      if (intervalErrors == 0 && response != null && response.getStatus() == 401) {
        authenticate();
      }
      intervalErrors++;
      if (intervalErrors >= MAXIMUM_ERRORS_IN_INTERVAL) {
        logger.warn("String_Node_Str",MAXIMUM_ERRORS_IN_INTERVAL,ERROR_INTERVAL_SECONDS);
        updateStatus(ThingStatus.OFFLINE,ThingStatusDetail.COMMUNICATION_ERROR);
        eventClient.close();
        return null;
      }
      if ((System.currentTimeMillis() - intervalTimestamp) > 1000 * ERROR_INTERVAL_SECONDS) {
        logger.trace("String_Node_Str",intervalErrors);
        intervalTimestamp=System.currentTimeMillis();
        intervalErrors=0;
      }
    }
  }
  return null;
}

Fixed version (ground truth):
protected String invokeAndParse(String command,String payLoad,WebTarget target){
  logger.debug("String_Node_Str",command);
  if (vehicle.id != null) {
    Response response;
    if (payLoad != null) {
      if (command != null) {
        response=target.resolveTemplate("String_Node_Str",command).resolveTemplate("String_Node_Str",vehicle.id).request().header("String_Node_Str","String_Node_Str" + logonToken.access_token).post(Entity.entity(payLoad,MediaType.APPLICATION_JSON_TYPE));
      }
 else {
        response=target.resolveTemplate("String_Node_Str",vehicle.id).request().header("String_Node_Str","String_Node_Str" + logonToken.access_token).post(Entity.entity(payLoad,MediaType.APPLICATION_JSON_TYPE));
      }
    }
 else {
      if (command != null) {
        response=target.resolveTemplate("String_Node_Str",command).resolveTemplate("String_Node_Str",vehicle.id).request(MediaType.APPLICATION_JSON_TYPE).header("String_Node_Str","String_Node_Str" + logonToken.access_token).get();
      }
 else {
        response=target.resolveTemplate("String_Node_Str",vehicle.id).request(MediaType.APPLICATION_JSON_TYPE).header("String_Node_Str","String_Node_Str" + logonToken.access_token).get();
      }
    }
    JsonParser parser=new JsonParser();
    if (response != null && response.getStatus() == 200) {
      try {
        JsonObject jsonObject=parser.parse(response.readEntity(String.class)).getAsJsonObject();
        logger.trace("String_Node_Str",new Object[]{command,payLoad,target.toString(),jsonObject.get("String_Node_Str").toString()});
        return jsonObject.get("String_Node_Str").toString();
      }
 catch (      Exception e) {
        logger.error("String_Node_Str",e.getMessage());
      }
    }
 else {
      logger.error("String_Node_Str",new Object[]{command,(response != null) ? response.getStatus() : "String_Node_Str",(response != null) ? response.getStatusInfo() : "String_Node_Str"});
      if (apiIntervalErrors == 0 && response != null && response.getStatus() == 401) {
        authenticate();
      }
      apiIntervalErrors++;
      if (apiIntervalErrors >= API_MAXIMUM_ERRORS_IN_INTERVAL) {
        logger.warn("String_Node_Str",API_MAXIMUM_ERRORS_IN_INTERVAL,API_ERROR_INTERVAL_SECONDS);
        updateStatus(ThingStatus.OFFLINE,ThingStatusDetail.COMMUNICATION_ERROR);
        eventClient.close();
        return null;
      }
      if ((System.currentTimeMillis() - apiIntervalTimestamp) > 1000 * API_ERROR_INTERVAL_SECONDS) {
        logger.trace("String_Node_Str",apiIntervalErrors);
        apiIntervalTimestamp=System.currentTimeMillis();
        apiIntervalErrors=0;
      }
    }
  }
  return null;
}