Program: 159161
Project: 159161
Buggy source:
public boolean isMatchTableStillValid(){
  if (!table.isTournament()) {
    int humanPlayers=0;
    int aiPlayers=0;
    int validHumanPlayers=0;
    if (match == null && !(table.getState().equals(TableState.WAITING) || table.getState().equals(TableState.STARTING) || table.getState().equals(TableState.READY_TO_START))) {
      logger.debug("String_Node_Str");
      logger.debug("String_Node_Str" + match.getId() + "String_Node_Str"+ match.getName()+ "String_Node_Str");
    }
    if (match.isDoneSideboarding()) {
      if (match.getGame() == null) {
        logger.debug("String_Node_Str");
        logger.debug("String_Node_Str" + match.getId() + "String_Node_Str"+ match.getName()+ "String_Node_Str");
      }
    }
    for (    Map.Entry<UUID,UUID> userPlayerEntry : userPlayerMap.entrySet()) {
      MatchPlayer matchPlayer=match.getPlayer(userPlayerEntry.getValue());
      if (matchPlayer == null) {
        logger.debug("String_Node_Str");
        logger.debug("String_Node_Str" + match.getId());
        logger.debug("String_Node_Str" + userPlayerEntry.getKey());
        logger.debug("String_Node_Str" + userPlayerEntry.getValue());
        continue;
      }
      if (matchPlayer.getPlayer().isHuman()) {
        humanPlayers++;
        if (!matchPlayer.hasQuit()) {
          User user=UserManager.getInstance().getUser(userPlayerEntry.getKey());
          if (user == null) {
            logger.debug("String_Node_Str" + matchPlayer.getName());
            logger.debug("String_Node_Str" + match.getId());
            logger.debug("String_Node_Str" + userPlayerEntry.getKey());
            logger.debug("String_Node_Str" + userPlayerEntry.getValue());
            return false;
          }
          validHumanPlayers++;
        }
      }
 else {
        aiPlayers++;
      }
    }
    return validHumanPlayers >= 2 || validHumanPlayers == humanPlayers || aiPlayers > 1;
  }
  return true;
}

Fixed version (ground truth):
public boolean isMatchTableStillValid(){
  if (!table.isTournament()) {
    int humanPlayers=0;
    int aiPlayers=0;
    int validHumanPlayers=0;
    if (!(table.getState().equals(TableState.WAITING) || table.getState().equals(TableState.STARTING) || table.getState().equals(TableState.READY_TO_START))) {
      if (match == null) {
        logger.debug("String_Node_Str");
        logger.debug("String_Node_Str" + match.getId() + "String_Node_Str"+ match.getName()+ "String_Node_Str");
      }
 else {
        if (match.isDoneSideboarding() && match.getGame() == null) {
          logger.debug("String_Node_Str");
          logger.debug("String_Node_Str" + match.getId() + "String_Node_Str"+ match.getName()+ "String_Node_Str");
        }
      }
    }
    for (    Map.Entry<UUID,UUID> userPlayerEntry : userPlayerMap.entrySet()) {
      MatchPlayer matchPlayer=match.getPlayer(userPlayerEntry.getValue());
      if (matchPlayer == null) {
        logger.debug("String_Node_Str");
        logger.debug("String_Node_Str" + match.getId());
        logger.debug("String_Node_Str" + userPlayerEntry.getKey());
        logger.debug("String_Node_Str" + userPlayerEntry.getValue());
        continue;
      }
      if (matchPlayer.getPlayer().isHuman()) {
        humanPlayers++;
        if (!matchPlayer.hasQuit()) {
          User user=UserManager.getInstance().getUser(userPlayerEntry.getKey());
          if (user == null) {
            logger.debug("String_Node_Str" + matchPlayer.getName());
            logger.debug("String_Node_Str" + match.getId());
            logger.debug("String_Node_Str" + userPlayerEntry.getKey());
            logger.debug("String_Node_Str" + userPlayerEntry.getValue());
            return false;
          }
          validHumanPlayers++;
        }
      }
 else {
        aiPlayers++;
      }
    }
    return validHumanPlayers >= 2 || validHumanPlayers == humanPlayers || aiPlayers > 1;
  }
  return true;
}