The marriage with you is not void hence the petition under section 11 of HMA is not maintainable.
The marriage with your wife is very much valid if she had legally divorced her previous husband and the their marriage ws dissolved legally by a decree of divorce through a court of law.
A petition under section 12 of HMA can be filed seeking to annul the marriage for the acts of cheating or fraud played by the respondent suppressing the facts that are material to this marriage.
Your allegations that she deceived you by not informing you about her previous marriage which was duly dissolved by a court decree of divorce may not be a proper ground for annulling the marriage because the facts material to marriage was not suppressed, i.e., if at all her previous marriage had subsisted at the time of marrying you and she had suppressed that fact which is a material fact for contracting the marriage with you.
Therefore neither section 11 nor section 12 would be maintainable, you may file a divorce case under the provisions of section 13 seeking divorce on the grounds of cruelty citing the same reasons depicting the mental cruelty provided your marriage is over one year now from the date of marriage.
You can ask your lawyer to file an amendment petition to amend the provisions of law mentioned in the petition as well as the prayer that has been made in the petition suitably to maintain your pleadings of cruelty.
Please note that you cannot file a criminal case in the judicial magistrate court under section 494 or 495 IPC because her previous marriage was not subsisting at the time of the solemnization of this marriage with you.