Program: 173530
Project: 173530
Buggy source:
public boolean process(PossibleAction action){
  boolean result=true;
  DisplayBuffer.clear();
  guiHints.clearVisibilityHints();
  if (action instanceof NullAction && ((NullAction)action).getMode() == NullAction.START_GAME) {
    result=true;
  }
 else   if (action != null) {
    action.setActed();
    result=false;
    String actionPlayerName=action.getPlayerName();
    String currentPlayerName=getCurrentPlayer().getId();
    if (!actionPlayerName.equals(currentPlayerName)) {
      DisplayBuffer.add(LocalText.getText("String_Node_Str",actionPlayerName,currentPlayerName));
      return false;
    }
    if (!possibleActions.validate(action)) {
      DisplayBuffer.add(LocalText.getText("String_Node_Str",action.toString()));
      return false;
    }
    for (; ; ) {
      if (action instanceof GameAction) {
        GameAction gameAction=(GameAction)action;
        result=processGameActions(gameAction);
        if (result)         break;
      }
      result=processCorrectionActions(action) || getCurrentRound().process(action);
      break;
    }
    if (result && !(action instanceof GameAction) && action.hasActed()) {
      executedActions.add(action);
    }
  }
  possibleActions.clear();
  getCurrentRound().setPossibleActions();
  if (!isGameOver() && possibleActions.containsOnlyPass()) {
    result=process(possibleActions.getList().get(0));
  }
  if (!isGameOver())   setCorrectionActions();
  for (  PossibleAction pa : possibleActions.getList()) {
    log.debug(((Player)currentPlayer.value()).getId() + "String_Node_Str" + pa.toString());
  }
  return result;
}

Fixed version (ground truth):
public boolean process(PossibleAction action){
  boolean result=true;
  DisplayBuffer.clear();
  guiHints.clearVisibilityHints();
  if (action instanceof NullAction && ((NullAction)action).getMode() == NullAction.START_GAME) {
    result=true;
  }
 else   if (action != null) {
    action.setActed();
    result=false;
    String actionPlayerName=action.getPlayerName();
    String currentPlayerName=getCurrentPlayer().getId();
    if (!actionPlayerName.equals(currentPlayerName)) {
      DisplayBuffer.add(LocalText.getText("String_Node_Str",actionPlayerName,currentPlayerName));
      return false;
    }
    if (!possibleActions.validate(action)) {
      DisplayBuffer.add(LocalText.getText("String_Node_Str",action.toString()));
      return false;
    }
    for (; ; ) {
      if (action instanceof GameAction) {
        GameAction gameAction=(GameAction)action;
        result=processGameActions(gameAction);
        if (result)         break;
      }
      result=processCorrectionActions(action) || getCurrentRound().process(action);
      break;
    }
    if (result && !(action instanceof GameAction) && action.hasActed()) {
      executedActions.add(action);
    }
  }
  possibleActions.clear();
  getCurrentRound().setPossibleActions();
  if (!isGameOver() && possibleActions.containsOnlyPass()) {
    result=process(possibleActions.getList().get(0));
  }
  if (!isGameOver())   setCorrectionActions();
  ChangeStack changeStack=getRoot().getChangeStack();
  if (action != null) {
    if (result && !(action instanceof GameAction) && action.hasActed()) {
      if (changeStack.isOpen())       changeStack.close();
      recoverySave();
    }
 else {
      if (changeStack.isOpen())       changeStack.cancel();
    }
  }
  for (  PossibleAction pa : possibleActions.getList()) {
    log.debug(((Player)currentPlayer.value()).getId() + "String_Node_Str" + pa.toString());
  }
  return result;
}