Hello,
1) There is nothing called auto divorce available under law. You can either get divorce by mutual consent or you need to file a unilateral petition which can either be contested or ex parte.
2) If your husband is served summons from the court after you file for divorce and he does not turn up in the court for a number of occasions the court will be inclined to pass an ex parte order which is without him deliberately contesting. You need to know his current address and summons from court needs o get served on him.
3)Alternately you can contact him and ask him to consent for a divorce mutually and file a joint petition and the divorce shall be decreed in 6 months.
4) To get an ex parte divorce the Respondent husband has to remain absent at least on 5 dates and then the court will consider the application to pass an ex parte order.