Program: 81432
Project: 81432
Buggy source:
public Boolean run(CommandSender sender,String[] args){
  Player player=(Player)sender;
  iConomy iConomy=null;
  Plugin iCoplugin=Jail.instance.getServer().getPluginManager().getPlugin("String_Node_Str");
  if (iCoplugin == null) {
    Util.Message("String_Node_Str",sender);
    return true;
  }
  iConomy=(iConomy)iCoplugin;
  if (args.length < 1) {
    JailPrisoner prisoner=Jail.prisoners.get(((Player)sender).getName().toLowerCase());
    JailZone jail=prisoner.getJail();
    if (prisoner == null) {
      Util.Message("String_Node_Str",sender);
      return true;
    }
    if (jail.getSettings().getBoolean(Setting.EnablePaying) && jail.getSettings().getDouble(Setting.PriceForInfiniteJail) > 0 && prisoner.getRemainingTime() < 0)     Util.Message("String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PriceForInfiniteJail)) + "String_Node_Str",sender);
 else     if (!jail.getSettings().getBoolean(Setting.EnablePaying) || prisoner.getRemainingTime() < 0 || jail.getSettings().getDouble(Setting.PriceForInfiniteJail) == 0)     Util.Message("String_Node_Str",sender);
 else {
      String message="String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PricePerMinute)) + "String_Node_Str";
      message+="String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PricePerMinute) * Math.round(prisoner.getRemainingTimeMinutes())) + "String_Node_Str";
      Util.Message(message,sender);
    }
  }
 else {
    JailPrisoner prisoner;
    if (args.length > 1) {
      prisoner=Jail.prisoners.get(args[1].toLowerCase());
      if (prisoner == null) {
        Util.Message("String_Node_Str",sender);
        return true;
      }
    }
 else {
      prisoner=Jail.prisoners.get(((Player)sender).getName().toLowerCase());
      if (prisoner == null) {
        Util.Message("String_Node_Str",sender);
        return true;
      }
    }
    JailZone jail=prisoner.getJail();
    if ((prisoner.getRemainingTime() < 0 && jail.getSettings().getDouble(Setting.PriceForInfiniteJail) == 0) || (prisoner.getRemainingTime() > 0 && jail.getSettings().getDouble(Setting.PricePerMinute) == 0)) {
      if (args.length > 1)       Util.Message("String_Node_Str",sender);
 else       Util.Message("String_Node_Str",sender);
      return true;
    }
    Account account=iConomy.getAccount(player.getName());
    Holdings holdings=account.getHoldings();
    double payment=Double.parseDouble(args[0]);
    if (holdings.hasUnder(payment)) {
      Util.Message("String_Node_Str",sender);
      return true;
    }
    if (prisoner.getRemainingTime() < 0) {
      if (payment >= jail.getSettings().getDouble(Setting.PriceForInfiniteJail)) {
        if (args.length > 1)         Util.Message("String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PriceForInfiniteJail)) + "String_Node_Str"+ prisoner.getName()+ "String_Node_Str",sender);
 else         Util.Message("String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PriceForInfiniteJail)) + "String_Node_Str",sender);
        holdings.subtract(jail.getSettings().getDouble(Setting.PriceForInfiniteJail));
        prisoner.release();
      }
 else {
        Util.Message("String_Node_Str",sender);
        return true;
      }
    }
 else {
      double releasebill=jail.getSettings().getDouble(Setting.PricePerMinute) * Math.round(prisoner.getRemainingTimeMinutes());
      if (payment >= releasebill) {
        if (args.length > 1)         Util.Message("String_Node_Str" + iConomy.format(releasebill) + "String_Node_Str"+ prisoner.getName()+ "String_Node_Str",sender);
 else         Util.Message("String_Node_Str" + iConomy.format(releasebill) + "String_Node_Str",sender);
        holdings.subtract(releasebill);
        prisoner.release();
      }
 else {
        int minutes=(int)Math.round(payment / jail.getSettings().getDouble(Setting.PricePerMinute));
        double bill=minutes * jail.getSettings().getDouble(Setting.PricePerMinute);
        int remain=(int)(Math.round(prisoner.getRemainingTimeMinutes()) - minutes);
        if (args.length > 1)         Util.Message("String_Node_Str" + iConomy.format(bill) + "String_Node_Str"+ prisoner.getName()+ "String_Node_Str"+ String.valueOf(remain)+ "String_Node_Str",sender);
 else         Util.Message("String_Node_Str" + iConomy.format(bill) + "String_Node_Str"+ String.valueOf(remain)+ "String_Node_Str",sender);
        holdings.subtract(bill);
        prisoner.setRemainingTimeMinutes(remain);
      }
    }
  }
  return true;
}

Fixed version (ground truth):
public Boolean run(CommandSender sender,String[] args){
  Player player=(Player)sender;
  iConomy iConomy=null;
  Plugin iCoplugin=Jail.instance.getServer().getPluginManager().getPlugin("String_Node_Str");
  if (iCoplugin == null) {
    Util.Message("String_Node_Str",sender);
    return true;
  }
  iConomy=(iConomy)iCoplugin;
  if (args.length < 1) {
    JailPrisoner prisoner=Jail.prisoners.get(((Player)sender).getName().toLowerCase());
    if (prisoner == null) {
      Util.Message("String_Node_Str",sender);
      return true;
    }
    JailZone jail=prisoner.getJail();
    if (jail.getSettings().getBoolean(Setting.EnablePaying) && jail.getSettings().getDouble(Setting.PriceForInfiniteJail) > 0 && prisoner.getRemainingTime() < 0)     Util.Message("String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PriceForInfiniteJail)) + "String_Node_Str",sender);
 else     if (!jail.getSettings().getBoolean(Setting.EnablePaying) || prisoner.getRemainingTime() < 0 || jail.getSettings().getDouble(Setting.PriceForInfiniteJail) == 0)     Util.Message("String_Node_Str",sender);
 else {
      String message="String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PricePerMinute)) + "String_Node_Str";
      message+="String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PricePerMinute) * Math.round(prisoner.getRemainingTimeMinutes())) + "String_Node_Str";
      Util.Message(message,sender);
    }
  }
 else {
    JailPrisoner prisoner;
    if (args.length > 1) {
      prisoner=Jail.prisoners.get(args[1].toLowerCase());
      if (prisoner == null) {
        Util.Message("String_Node_Str",sender);
        return true;
      }
    }
 else {
      prisoner=Jail.prisoners.get(((Player)sender).getName().toLowerCase());
      if (prisoner == null) {
        Util.Message("String_Node_Str",sender);
        return true;
      }
    }
    JailZone jail=prisoner.getJail();
    if ((prisoner.getRemainingTime() < 0 && jail.getSettings().getDouble(Setting.PriceForInfiniteJail) == 0) || (prisoner.getRemainingTime() > 0 && jail.getSettings().getDouble(Setting.PricePerMinute) == 0)) {
      if (args.length > 1)       Util.Message("String_Node_Str",sender);
 else       Util.Message("String_Node_Str",sender);
      return true;
    }
    Account account=iConomy.getAccount(player.getName());
    Holdings holdings=account.getHoldings();
    double payment=Double.parseDouble(args[0]);
    if (holdings.hasUnder(payment)) {
      Util.Message("String_Node_Str",sender);
      return true;
    }
    if (prisoner.getRemainingTime() < 0) {
      if (payment >= jail.getSettings().getDouble(Setting.PriceForInfiniteJail)) {
        if (args.length > 1)         Util.Message("String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PriceForInfiniteJail)) + "String_Node_Str"+ prisoner.getName()+ "String_Node_Str",sender);
 else         Util.Message("String_Node_Str" + iConomy.format(jail.getSettings().getDouble(Setting.PriceForInfiniteJail)) + "String_Node_Str",sender);
        holdings.subtract(jail.getSettings().getDouble(Setting.PriceForInfiniteJail));
        prisoner.release();
      }
 else {
        Util.Message("String_Node_Str",sender);
        return true;
      }
    }
 else {
      double releasebill=jail.getSettings().getDouble(Setting.PricePerMinute) * Math.round(prisoner.getRemainingTimeMinutes());
      if (payment >= releasebill) {
        if (args.length > 1)         Util.Message("String_Node_Str" + iConomy.format(releasebill) + "String_Node_Str"+ prisoner.getName()+ "String_Node_Str",sender);
 else         Util.Message("String_Node_Str" + iConomy.format(releasebill) + "String_Node_Str",sender);
        holdings.subtract(releasebill);
        prisoner.release();
      }
 else {
        int minutes=(int)Math.round(payment / jail.getSettings().getDouble(Setting.PricePerMinute));
        double bill=minutes * jail.getSettings().getDouble(Setting.PricePerMinute);
        int remain=(int)(Math.round(prisoner.getRemainingTimeMinutes()) - minutes);
        if (args.length > 1)         Util.Message("String_Node_Str" + iConomy.format(bill) + "String_Node_Str"+ prisoner.getName()+ "String_Node_Str"+ String.valueOf(remain)+ "String_Node_Str",sender);
 else         Util.Message("String_Node_Str" + iConomy.format(bill) + "String_Node_Str"+ String.valueOf(remain)+ "String_Node_Str",sender);
        holdings.subtract(bill);
        prisoner.setRemainingTimeMinutes(remain);
      }
    }
  }
  return true;
}