Program: 21162
Project: 21162
Buggy source:
@Override public ArrayList<MenuItem> createMenuitems(){
  ArrayList<MenuItem> menuList=new ArrayList<MenuItem>();
  if (!this.enablePremium)   return null;
  MenuItem account;
  MenuItem m=new MenuItem(MenuItem.NORMAL,JDLocale.L("String_Node_Str","String_Node_Str"),1);
  m.setActionListener(this);
  MenuItem premium=new MenuItem(MenuItem.CONTAINER,JDLocale.L("String_Node_Str","String_Node_Str"),0);
  menuList.add(m);
  ArrayList<Account> accounts=getPremiumAccounts();
  int i=1;
  int c=0;
  for (  Account a : accounts) {
    try {
      c++;
      if (getAccountwithoutUsername()) {
        if (a.getPass() == null || a.getPass().trim().length() == 0)         continue;
        account=new MenuItem(MenuItem.CONTAINER,i++ + "String_Node_Str" + "String_Node_Str"+ (i - 1),0);
      }
 else {
        if (a.getUser() == null || a.getUser().trim().length() == 0)         continue;
        account=new MenuItem(MenuItem.CONTAINER,i++ + "String_Node_Str" + a.getUser(),0);
        m=new MenuItem(MenuItem.TOGGLE,JDLocale.L("String_Node_Str","String_Node_Str"),100 + c - 1);
        m.setSelected(a.isEnabled());
        m.setActionListener(this);
        account.addMenuItem(m);
        m=new MenuItem(JDLocale.L("String_Node_Str","String_Node_Str"),200 + c - 1);
        m.setActionListener(this);
        account.addMenuItem(m);
        premium.addMenuItem(account);
      }
    }
 catch (    Exception e) {
      e.printStackTrace();
    }
  }
  if (premium.getSize() != 0) {
    menuList.add(premium);
  }
 else {
    menuList.add(new MenuItem(JDLocale.L("String_Node_Str","String_Node_Str"),-1));
  }
  return menuList;
}

Fixed version (ground truth):
@Override public ArrayList<MenuItem> createMenuitems(){
  ArrayList<MenuItem> menuList=new ArrayList<MenuItem>();
  if (!this.enablePremium)   return null;
  MenuItem account;
  MenuItem m=new MenuItem(MenuItem.NORMAL,JDLocale.L("String_Node_Str","String_Node_Str"),1);
  m.setActionListener(this);
  MenuItem premium=new MenuItem(MenuItem.CONTAINER,JDLocale.L("String_Node_Str","String_Node_Str"),0);
  menuList.add(m);
  ArrayList<Account> accounts=getPremiumAccounts();
  int i=1;
  int c=0;
  for (  Account a : accounts) {
    if (a == null)     continue;
    try {
      c++;
      if (getAccountwithoutUsername()) {
        if (a.getPass() == null || a.getPass().trim().length() == 0)         continue;
        account=new MenuItem(MenuItem.CONTAINER,i++ + "String_Node_Str" + "String_Node_Str"+ (i - 1),0);
      }
 else {
        if (a.getUser() == null || a.getUser().trim().length() == 0)         continue;
        account=new MenuItem(MenuItem.CONTAINER,i++ + "String_Node_Str" + a.getUser(),0);
        m=new MenuItem(MenuItem.TOGGLE,JDLocale.L("String_Node_Str","String_Node_Str"),100 + c - 1);
        m.setSelected(a.isEnabled());
        m.setActionListener(this);
        account.addMenuItem(m);
        m=new MenuItem(JDLocale.L("String_Node_Str","String_Node_Str"),200 + c - 1);
        m.setActionListener(this);
        account.addMenuItem(m);
        premium.addMenuItem(account);
      }
    }
 catch (    Exception e) {
      e.printStackTrace();
    }
  }
  if (premium.getSize() != 0) {
    menuList.add(premium);
  }
 else {
    menuList.add(new MenuItem(JDLocale.L("String_Node_Str","String_Node_Str"),-1));
  }
  return menuList;
}