Program: 90565
Project: 90565
Buggy source:
/** 
 * Tear down the configuration.
 */
@Override public void stop(){
  this.setStopping();
  LOGGER.trace("String_Node_Str",this);
  for (  final LoggerConfig loggerConfig : loggerConfigs.values()) {
    loggerConfig.getReliabilityStrategy().beforeStopConfiguration(this);
  }
  final String cls=getClass().getSimpleName();
  LOGGER.trace("String_Node_Str",cls,loggerConfigs.size());
  LOGGER.trace("String_Node_Str",cls,loggerConfigs.size());
  for (  final LoggerConfig logger : loggerConfigs.values()) {
    logger.stop();
  }
  if (!root.isStopped()) {
    root.stop();
  }
  if (hasAsyncLoggers()) {
    LOGGER.trace("String_Node_Str",cls);
    asyncLoggerConfigDisruptor.stop();
  }
  LOGGER.trace("String_Node_Str",cls);
  final Appender[] array=appenders.values().toArray(new Appender[appenders.size()]);
  int asyncAppenderCount=0;
  for (int i=array.length - 1; i >= 0; --i) {
    if (array[i] instanceof AsyncAppender) {
      array[i].stop();
      asyncAppenderCount++;
    }
  }
  LOGGER.trace("String_Node_Str",cls,asyncAppenderCount);
  LOGGER.trace("String_Node_Str",cls);
  for (  final LoggerConfig loggerConfig : loggerConfigs.values()) {
    loggerConfig.getReliabilityStrategy().beforeStopAppenders();
  }
  LOGGER.trace("String_Node_Str",cls);
  int appenderCount=0;
  for (int i=array.length - 1; i >= 0; --i) {
    if (array[i].isStarted()) {
      array[i].stop();
      appenderCount++;
    }
  }
  LOGGER.trace("String_Node_Str",cls,appenderCount);
  LOGGER.trace("String_Node_Str",cls,loggerConfigs.size());
  for (  final LoggerConfig loggerConfig : loggerConfigs.values()) {
    loggerConfig.clearAppenders();
  }
  if (watchManager.isStarted()) {
    watchManager.stop();
  }
  if (executorService != null) {
    LOGGER.trace("String_Node_Str",cls);
    executorService.shutdown();
  }
  super.stop();
  if (advertiser != null && advertisement != null) {
    advertiser.unadvertise(advertisement);
  }
  LOGGER.debug("String_Node_Str",this);
}

Fixed version (ground truth):
/** 
 * Tear down the configuration.
 */
@Override public void stop(){
  this.setStopping();
  LOGGER.trace("String_Node_Str",this);
  for (  final LoggerConfig loggerConfig : loggerConfigs.values()) {
    loggerConfig.getReliabilityStrategy().beforeStopConfiguration(this);
  }
  root.getReliabilityStrategy().beforeStopConfiguration(this);
  final String cls=getClass().getSimpleName();
  LOGGER.trace("String_Node_Str",cls,loggerConfigs.size() + 1);
  if (!loggerConfigs.isEmpty()) {
    LOGGER.trace("String_Node_Str",cls,loggerConfigs.size());
    for (    final LoggerConfig logger : loggerConfigs.values()) {
      logger.stop();
    }
  }
  LOGGER.trace("String_Node_Str",cls);
  if (!root.isStopped()) {
    root.stop();
  }
  if (hasAsyncLoggers()) {
    LOGGER.trace("String_Node_Str",cls);
    asyncLoggerConfigDisruptor.stop();
  }
  final Appender[] array=appenders.values().toArray(new Appender[appenders.size()]);
  final List<Appender> async=getAsyncAppenders(array);
  if (!async.isEmpty()) {
    LOGGER.trace("String_Node_Str",cls,async.size());
    for (    Appender appender : async) {
      appender.stop();
    }
  }
  LOGGER.trace("String_Node_Str",cls);
  for (  final LoggerConfig loggerConfig : loggerConfigs.values()) {
    loggerConfig.getReliabilityStrategy().beforeStopAppenders();
  }
  root.getReliabilityStrategy().beforeStopAppenders();
  LOGGER.trace("String_Node_Str",cls);
  int appenderCount=0;
  for (int i=array.length - 1; i >= 0; --i) {
    if (array[i].isStarted()) {
      array[i].stop();
      appenderCount++;
    }
  }
  LOGGER.trace("String_Node_Str",cls,appenderCount);
  LOGGER.trace("String_Node_Str",cls,loggerConfigs.size() + 1);
  for (  final LoggerConfig loggerConfig : loggerConfigs.values()) {
    loggerConfig.clearAppenders();
  }
  root.clearAppenders();
  if (watchManager.isStarted()) {
    watchManager.stop();
  }
  if (executorService != null) {
    LOGGER.trace("String_Node_Str",cls);
    executorService.shutdown();
  }
  super.stop();
  if (advertiser != null && advertisement != null) {
    advertiser.unadvertise(advertisement);
  }
  LOGGER.debug("String_Node_Str",this);
}