Program: 41947
Project: 41947
Buggy source:
public boolean execute(ICommandSender sender,String[] args){
  final IPlayer player=(IPlayer)sender;
  if (player.hasPermission(PermissionNames.USER_AUTO)) {
    if (manager.isPlotWorld(player) || plugin.getConfig().getBoolean("String_Node_Str")) {
      final IWorld world;
      if (!manager.isPlotWorld(player) && plugin.getConfig().getBoolean("String_Node_Str")) {
        if (args.length == 2) {
          world=manager.getWorld(args[1]);
        }
 else {
          world=manager.getFirstWorld();
        }
        if (world == null) {
          player.sendMessage(C("String_Node_Str"));
          return true;
        }
        if (!manager.isPlotWorld(world)) {
          player.sendMessage(C("String_Node_Str",world));
          return true;
        }
      }
 else {
        world=player.getWorld();
      }
      int playerLimit=getPlotLimit(player);
      int plotsOwned=manager.getOwnedPlotCount(player.getUniqueId(),world);
      if (playerLimit != -1 && plotsOwned >= playerLimit && !player.hasPermission("String_Node_Str")) {
        player.sendMessage(C("String_Node_Str") + "String_Node_Str" + plotsOwned+ "String_Node_Str"+ playerLimit+ "String_Node_Str"+ C("String_Node_Str")+ "String_Node_Str"+ C("String_Node_Str"));
        return true;
      }
      final PlotMapInfo pmi=manager.getMap(world);
      serverBridge.runTaskAsynchronously(new Runnable(){
        @Override public void run(){
          loop:           for (int i=0; i < 50000; i++) {
            for (int x=-i; x <= i; x++) {
              for (int z=-i; z <= i; z++) {
                final PlotId id=new PlotId(x,z);
                if (manager.isPlotAvailable(id,world)) {
                  final String name=player.getName();
                  final UUID uuid=player.getUniqueId();
                  if (manager.isEconomyEnabled(world)) {
                    double price=pmi.getClaimPrice();
                    if (serverBridge.has(player,price)) {
                      EconomyResponse er=serverBridge.withdrawPlayer(player,price);
                      if (!er.transactionSuccess()) {
                        player.sendMessage(er.errorMessage);
                      }
                    }
 else {
                      player.sendMessage("String_Node_Str");
                    }
                  }
                  plugin.getServerBridge().runTask(new Runnable(){
                    @Override public void run(){
                      manager.createPlot(id,world,name,uuid,pmi);
                    }
                  }
);
                  player.teleport(manager.getPlotHome(id,world));
                  player.sendMessage(C("String_Node_Str") + "String_Node_Str" + C("String_Node_Str")+ "String_Node_Str"+ C("String_Node_Str")+ "String_Node_Str"+ C("String_Node_Str"));
                  break loop;
                }
              }
            }
          }
        }
      }
);
      player.sendMessage(C("String_Node_Str"));
    }
 else {
      player.sendMessage(C("String_Node_Str"));
    }
  }
 else {
    return false;
  }
  return true;
}

Fixed version (ground truth):
public boolean execute(ICommandSender sender,String[] args){
  final IPlayer player=(IPlayer)sender;
  if (player.hasPermission(PermissionNames.USER_AUTO)) {
    if (manager.isPlotWorld(player) || plugin.getConfig().getBoolean("String_Node_Str")) {
      final IWorld world;
      if (!manager.isPlotWorld(player) && plugin.getConfig().getBoolean("String_Node_Str")) {
        if (args.length == 2) {
          world=manager.getWorld(args[1]);
        }
 else {
          world=manager.getFirstWorld();
        }
        if (world == null) {
          player.sendMessage(C("String_Node_Str"));
          return true;
        }
        if (!manager.isPlotWorld(world)) {
          player.sendMessage(C("String_Node_Str",world));
          return true;
        }
      }
 else {
        world=player.getWorld();
      }
      int playerLimit=getPlotLimit(player);
      int plotsOwned=manager.getOwnedPlotCount(player.getUniqueId(),world);
      if (playerLimit != -1 && plotsOwned >= playerLimit && !player.hasPermission("String_Node_Str")) {
        player.sendMessage(C("String_Node_Str") + "String_Node_Str" + plotsOwned+ "String_Node_Str"+ playerLimit+ "String_Node_Str"+ C("String_Node_Str")+ "String_Node_Str"+ C("String_Node_Str"));
        return true;
      }
      final PlotMapInfo pmi=manager.getMap(world);
      serverBridge.runTaskAsynchronously(new Runnable(){
        @Override public void run(){
          loop:           for (int i=0; i < 50000; i++) {
            for (int x=-i; x <= i; x++) {
              for (int z=-i; z <= i; z++) {
                final PlotId id=new PlotId(x,z);
                if (manager.isPlotAvailable(id,world)) {
                  final String name=player.getName();
                  final UUID uuid=player.getUniqueId();
                  if (manager.isEconomyEnabled(world)) {
                    double price=pmi.getClaimPrice();
                    if (serverBridge.has(player,price)) {
                      EconomyResponse er=serverBridge.withdrawPlayer(player,price);
                      if (!er.transactionSuccess()) {
                        player.sendMessage(er.errorMessage);
                      }
                    }
 else {
                      player.sendMessage("String_Node_Str");
                    }
                  }
                  plugin.getServerBridge().runTask(new Runnable(){
                    @Override public void run(){
                      manager.createPlot(id,world,name,uuid,pmi);
                    }
                  }
);
                  player.teleport(manager.getPlotHome(id,world));
                  player.sendMessage(C("String_Node_Str") + "String_Node_Str" + C("String_Node_Str")+ "String_Node_Str"+ "String_Node_Str"+ C("String_Node_Str"));
                  break loop;
                }
              }
            }
          }
        }
      }
);
      player.sendMessage(C("String_Node_Str"));
    }
 else {
      player.sendMessage(C("String_Node_Str"));
    }
  }
 else {
    return false;
  }
  return true;
}