Program: 173532
Project: 173532
Buggy source:
public boolean layBaseToken(LayBaseToken action){
  String errMsg=null;
  int cost=0;
  SpecialTokenLay stl=null;
  boolean extra=false;
  MapHex hex=action.getChosenHex();
  int station=action.getChosenStation();
  String companyName=operatingCompany.value().getId();
  while (true) {
    if (getStep() != GameDef.OrStep.LAY_TOKEN && action.getType() != LayBaseToken.HOME_CITY && action.getType() != LayBaseToken.SPECIAL_PROPERTY) {
      errMsg=LocalText.getText("String_Node_Str");
      break;
    }
    if (operatingCompany.value().getNumberOfFreeBaseTokens() == 0) {
      errMsg=LocalText.getText("String_Node_Str",companyName);
      break;
    }
    if (!isTokenLayAllowed(operatingCompany.value(),hex,station)) {
      errMsg=LocalText.getText("String_Node_Str");
      break;
    }
    if (!hex.hasTokenSlotsLeft(station)) {
      errMsg=LocalText.getText("String_Node_Str");
      break;
    }
    if (hex.hasTokenOfCompany(operatingCompany.value())) {
      errMsg=LocalText.getText("String_Node_Str",hex.getId(),companyName);
      break;
    }
    if (action != null) {
      List<MapHex> locations=action.getLocations();
      if (locations != null && locations.size() > 0 && !locations.contains(hex) && !locations.contains(null)) {
        errMsg=LocalText.getText("String_Node_Str",hex.getId(),action.getLocationNameString());
        break;
      }
      stl=action.getSpecialProperty();
      if (stl != null)       extra=stl.isExtra();
    }
    cost=operatingCompany.value().getBaseTokenLayCost(hex);
    if (stl != null && stl.isFree())     cost=0;
    if (cost > operatingCompany.value().getCash()) {
      errMsg=LocalText.getText("String_Node_Str",companyName,Bank.format(operatingCompany.value().getCash()),Bank.format(cost));
      break;
    }
    break;
  }
  if (errMsg != null) {
    DisplayBuffer.add(LocalText.getText("String_Node_Str",companyName,hex.getId(),Bank.format(cost),errMsg));
    return false;
  }
  if (hex.layBaseToken(operatingCompany.value(),station)) {
    operatingCompany.value().layBaseToken(hex,cost);
    if (action.getType() == LayBaseToken.HOME_CITY) {
      return true;
    }
    if (cost > 0) {
      MoneyModel.cashMove(operatingCompany.value(),bank,cost);
      ReportBuffer.add(LocalText.getText("String_Node_Str",companyName,hex.getId(),Bank.format(cost)));
    }
 else {
      ReportBuffer.add(LocalText.getText("String_Node_Str",companyName,hex.getId()));
    }
    if (stl != null) {
      stl.setExercised();
      currentSpecialTokenLays.remove(action);
      log.debug("String_Node_Str" + (extra ? "String_Node_Str" : "String_Node_Str") + "String_Node_Str");
    }
    if (getStep() != GameDef.OrStep.LAY_TOKEN)     return true;
    if (!extra) {
      currentNormalTokenLays.clear();
      log.debug("String_Node_Str");
    }
    if (currentNormalTokenLays.isEmpty()) {
      log.debug("String_Node_Str");
    }
 else     if (operatingCompany.value().getNumberOfFreeBaseTokens() == 0) {
      log.debug("String_Node_Str");
      currentNormalTokenLays.clear();
    }
 else {
      log.debug("String_Node_Str");
    }
    setSpecialTokenLays();
    log.debug("String_Node_Str" + currentSpecialTokenLays.size() + "String_Node_Str");
    if (currentNormalTokenLays.isEmpty() && currentSpecialTokenLays.isEmpty()) {
      nextStep();
    }
  }
  return true;
}

Fixed version (ground truth):
public boolean layBaseToken(LayBaseToken action){
  String errMsg=null;
  int cost=0;
  SpecialTokenLay stl=null;
  boolean extra=false;
  MapHex hex=action.getChosenHex();
  int station=action.getChosenStation();
  String companyName=operatingCompany.value().getId();
  while (true) {
    if (getStep() != GameDef.OrStep.LAY_TOKEN && action.getType() != LayBaseToken.HOME_CITY && action.getType() != LayBaseToken.SPECIAL_PROPERTY) {
      errMsg=LocalText.getText("String_Node_Str");
      break;
    }
    if (operatingCompany.value().getNumberOfFreeBaseTokens() == 0) {
      errMsg=LocalText.getText("String_Node_Str",companyName);
      break;
    }
    if (!isTokenLayAllowed(operatingCompany.value(),hex,station)) {
      errMsg=LocalText.getText("String_Node_Str");
      break;
    }
    if (!hex.hasTokenSlotsLeft(station)) {
      errMsg=LocalText.getText("String_Node_Str");
      break;
    }
    if (hex.hasTokenOfCompany(operatingCompany.value())) {
      errMsg=LocalText.getText("String_Node_Str",hex.getId(),companyName);
      break;
    }
    if (action != null) {
      List<MapHex> locations=action.getLocations();
      if (locations != null && locations.size() > 0 && !locations.contains(hex) && !locations.contains(null)) {
        errMsg=LocalText.getText("String_Node_Str",hex.getId(),action.getLocationNameString());
        break;
      }
      stl=action.getSpecialProperty();
      if (stl != null)       extra=stl.isExtra();
    }
    cost=operatingCompany.value().getBaseTokenLayCost(hex);
    if (stl != null && stl.isFree())     cost=0;
    if (cost > operatingCompany.value().getCash()) {
      errMsg=LocalText.getText("String_Node_Str",companyName,Bank.format(operatingCompany.value().getCash()),Bank.format(cost));
      break;
    }
    break;
  }
  if (errMsg != null) {
    DisplayBuffer.add(LocalText.getText("String_Node_Str",companyName,hex.getId(),Bank.format(cost),errMsg));
    return false;
  }
  getRoot().getChangeStack().newChangeSet(action);
  if (hex.layBaseToken(operatingCompany.value(),station)) {
    operatingCompany.value().layBaseToken(hex,cost);
    if (action.getType() == LayBaseToken.HOME_CITY) {
      return true;
    }
    if (cost > 0) {
      MoneyModel.cashMove(operatingCompany.value(),bank,cost);
      ReportBuffer.add(LocalText.getText("String_Node_Str",companyName,hex.getId(),Bank.format(cost)));
    }
 else {
      ReportBuffer.add(LocalText.getText("String_Node_Str",companyName,hex.getId()));
    }
    if (stl != null) {
      stl.setExercised();
      currentSpecialTokenLays.remove(action);
      log.debug("String_Node_Str" + (extra ? "String_Node_Str" : "String_Node_Str") + "String_Node_Str");
    }
    if (getStep() != GameDef.OrStep.LAY_TOKEN)     return true;
    if (!extra) {
      currentNormalTokenLays.clear();
      log.debug("String_Node_Str");
    }
    if (currentNormalTokenLays.isEmpty()) {
      log.debug("String_Node_Str");
    }
 else     if (operatingCompany.value().getNumberOfFreeBaseTokens() == 0) {
      log.debug("String_Node_Str");
      currentNormalTokenLays.clear();
    }
 else {
      log.debug("String_Node_Str");
    }
    setSpecialTokenLays();
    log.debug("String_Node_Str" + currentSpecialTokenLays.size() + "String_Node_Str");
    if (currentNormalTokenLays.isEmpty() && currentSpecialTokenLays.isEmpty()) {
      nextStep();
    }
  }
  return true;
}