Program: 86673
Project: 86673
Buggy source:
public void execute(MessageReceiver caller,String[] args){
  if (caller instanceof Server || caller instanceof CommandBlock) {
    caller.notice(Translator.translate("String_Node_Str"));
  }
 else {
    Player player=(Player)caller;
    if (Canary.warps().warpExists(args[1]) && !player.hasPermission("String_Node_Str")) {
      player.notice(Translator.translate("String_Node_Str"));
      return;
    }
    if (args.length == 2 && player.hasPermission("String_Node_Str")) {
      Warp newWarp=new Warp(player.getLocation(),args[1]);
      Canary.warps().addWarp(newWarp);
      player.message(Colors.YELLOW + Translator.translateAndFormat("String_Node_Str",args[1]));
      return;
    }
 else     if (args.length > 3) {
      if (args[2].equalsIgnoreCase("String_Node_Str") && player.hasPermission("String_Node_Str")) {
        Group[] groups=new Group[args.length - 3];
        for (int i=0; i < groups.length; i++) {
          groups[i]=Canary.usersAndGroups().getGroup(args[i + 3]);
        }
        Warp newWarp=new Warp(player.getLocation(),groups,args[1]);
        Canary.warps().addWarp(newWarp);
        player.message(Colors.YELLOW + Translator.translateAndFormat("String_Node_Str",args[1]));
        return;
      }
      if (args[2].equalsIgnoreCase("String_Node_Str") && player.hasPermission("String_Node_Str")) {
        Warp newWarp=new Warp(player.getLocation(),args[1],args[3],false);
        Canary.warps().addWarp(newWarp);
        player.message(Colors.YELLOW + Translator.translateAndFormat("String_Node_Str",args[1]));
        return;
      }
 else {
        Canary.help().getHelp(player,"String_Node_Str");
        return;
      }
    }
 else {
      Canary.help().getHelp(player,"String_Node_Str");
      return;
    }
  }
}

Fixed version (ground truth):
public void execute(MessageReceiver caller,String[] args){
  if (caller instanceof Server || caller instanceof CommandBlock) {
    caller.notice(Translator.translate("String_Node_Str"));
  }
 else {
    Player player=(Player)caller;
    if (Canary.warps().warpExists(args[1]) && !player.hasPermission("String_Node_Str")) {
      player.notice(Translator.translate("String_Node_Str"));
      return;
    }
    if (args.length == 2 && player.hasPermission("String_Node_Str")) {
      Warp newWarp=new Warp(player.getLocation(),args[1]);
      Canary.warps().addWarp(newWarp);
      player.message(Colors.YELLOW + Translator.translateAndFormat("String_Node_Str",args[1]));
    }
 else     if (args.length > 3) {
      if (args[2].equalsIgnoreCase("String_Node_Str") && player.hasPermission("String_Node_Str")) {
        Group[] groups=new Group[args.length - 3];
        for (int i=0; i < groups.length; i++) {
          groups[i]=Canary.usersAndGroups().getGroup(args[i + 3]);
        }
        Warp newWarp=new Warp(player.getLocation(),groups,args[1]);
        Canary.warps().addWarp(newWarp);
        player.message(Colors.YELLOW + Translator.translateAndFormat("String_Node_Str",args[1]));
        return;
      }
      if (args[2].equalsIgnoreCase("String_Node_Str") && player.hasPermission("String_Node_Str")) {
        Warp newWarp=new Warp(player.getLocation(),args[1],args[3],false);
        Canary.warps().addWarp(newWarp);
        player.message(Colors.YELLOW + Translator.translateAndFormat("String_Node_Str",args[1]));
      }
 else {
        Canary.help().getHelp(player,"String_Node_Str");
      }
    }
 else {
      Canary.help().getHelp(player,"String_Node_Str");
    }
  }
}