Program: 147528
Project: 147528
Buggy source:
@RequestMapping(value="String_Node_Str",method=RequestMethod.POST) public String orderAddTicket(@ModelAttribute(value="String_Node_Str") int row,@ModelAttribute(value="String_Node_Str") Sector sector,@RequestParam(value="String_Node_Str") int[] seat,Model model){
  model.addAttribute("String_Node_Str","String_Node_Str");
  if (order.size() > 0) {
    ArrayList<Ticket> deletingTicket=new ArrayList<>();
    for (    Ticket ord : order) {
      if (ticketService.getTicketById(ord.getId()) == null)       deletingTicket.add(ord);
    }
    if (deletingTicket.size() == 1) {
      model.addAttribute("String_Node_Str","String_Node_Str" + deletingTicket.get(0).getId() + "String_Node_Str");
      order.remove(deletingTicket.get(0));
      orderPrice-=deletingTicket.get(0).getSector().getPrice();
    }
    if (deletingTicket.size() > 1) {
      StringBuilder builder=new StringBuilder(200);
      for (      Ticket tic : deletingTicket) {
        builder.append(tic.getId()).append("String_Node_Str");
        order.remove(tic);
        orderPrice-=tic.getSector().getPrice();
      }
      model.addAttribute("String_Node_Str","String_Node_Str" + builder + "String_Node_Str");
    }
  }
  for (  int seat1 : seat) {
    Ticket ticket=new Ticket();
    ticket.setSector(sector);
    ticket.setRow(row);
    ticket.setSeat(seat1);
    currentSeat=seat1;
    if (order.size() > 0) {
      for (      Ticket ord : order) {
        if (ord.getSector().equals(sector) && ord.getSeat() == seat1 && ord.getRow() == row)         return "String_Node_Str";
      }
    }
    ticketService.addTicket(ticket);
    order.add(ticket);
    orderPrice+=sector.getPrice();
  }
  if (seat.length == 1)   model.addAttribute("String_Node_Str","String_Node_Str");
  if (seat.length > 1)   model.addAttribute("String_Node_Str","String_Node_Str");
  return "String_Node_Str";
}

Fixed version (ground truth):
@RequestMapping(value="String_Node_Str",method=RequestMethod.POST) public String orderAddTicket(@ModelAttribute(value="String_Node_Str") int row,@ModelAttribute(value="String_Node_Str") Sector sector,@RequestParam(value="String_Node_Str") int[] seat,Model model){
  model.addAttribute("String_Node_Str","String_Node_Str");
  if (order.size() > 0) {
    ArrayList<Ticket> deletingTicket=new ArrayList<>();
    for (    Ticket ord : order) {
      if (ticketService.getTicketById(ord.getId()) == null)       deletingTicket.add(ord);
    }
    if (deletingTicket.size() == 1) {
      model.addAttribute("String_Node_Str","String_Node_Str" + deletingTicket.get(0).getId() + "String_Node_Str");
      order.remove(deletingTicket.get(0));
      orderPrice-=deletingTicket.get(0).getSector().getPrice();
    }
    if (deletingTicket.size() > 1) {
      StringBuilder builder=new StringBuilder(200);
      for (      Ticket tic : deletingTicket) {
        builder.append(tic.getId()).append("String_Node_Str");
        order.remove(tic);
        orderPrice-=tic.getSector().getPrice();
      }
      model.addAttribute("String_Node_Str","String_Node_Str" + builder + "String_Node_Str");
    }
  }
  for (  int seat1 : seat) {
    Ticket ticket=new Ticket();
    ticket.setSector(sector);
    ticket.setRow(row);
    ticket.setSeat(seat1);
    currentSeat=seat1;
    if (order.size() > 0) {
      for (      Ticket ord : order) {
        if (ord.getSector().equals(sector) && ord.getSeat() == seat1 && ord.getRow() == row)         return "String_Node_Str";
      }
    }
    ticketService.addTicket(ticket);
    order.add(ticket);
    orderPrice+=sector.getPrice();
  }
  model.addAttribute("String_Node_Str",currentSeat);
  if (seat.length == 1)   model.addAttribute("String_Node_Str","String_Node_Str");
  if (seat.length > 1)   model.addAttribute("String_Node_Str","String_Node_Str");
  return "String_Node_Str";
}