With no AOS filed, the Non-Immigrant cannot file for Adjustment of Status on their own, withdrawing the I-130 petition effectively closes off the CR-1 as an option to get green card.
I found this one:
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Q: My ex-husband is a U.S. citizen and he was the petitioner for my I-130 and I-485 application when we were married. We divorced before my I-485 adjustment of status application was granted. Am I still eligible for adjustment of status based on my prior marriage to my ex-husband?
A: No. Generally speaking, in cases where a spouse is the petitioner in an I-130 application, if the marriage terminates by divorce before the adjustment of status is granted, the beneficiary will not be eligible for permanent resident status through this relationship.
http://www.hooyou.com/divorce/faq.htmlAlso note in the case of if a Conditional Green card were issued, fortunately this is not the case for the OP here is another out:
The best way to handle situations where there is a conditional green card involved is to not be hasty and file for a divorce, the best course of action it to file for a separation. A LPR cannot file to lift conditions separately unless they are divorced, if only separated, they need to file jointly to remove the conditions with a few exceptions, and that is where you get the leverage.
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Filing if the Couple is Separated
More troublesome is if the couple is still married, but separated or otherwise not getting along. With limited exception, as long as the couple is legally married, it is necessary to have a joint petition. Thus, troubled marriages often need either to be reconciled or terminated in order to file the I-751. As explained below, the I-751 can be filed by divorced individuals, and may be approved, as long as there is sufficient evidence that the marriage was genuine when initially entered into. It is more difficult to satisfy the USCIS in such scenarios, however.
Joint-Filing Waived in Limited Cases
There are two situations in which a person who is still legally married can file the I-751 without the spouse. The first is if the person entered into a marriage in good faith, but has been battered or subjected to extreme cruelty by the petitioning spouse. The second is if termination of permanent resident status and removal from the U.S. would result in extreme hardship to the foreign national. Extreme hardship is a high standard and can be based only upon conditions that arose after the conditional residency was acquired.
http://www.murthy.com/news/n_remcon.htmlhttp://www.divorceinfo.com/trialseparation.htm