Hi Naga,
Since this works in prod and not in dev. And migrated from Prod to Dev. Can you compare the log created in Dev with the successful run in Dev and Prod? Maybe the fail is in the same area.
Also do you have the same data in both systems. Dev usually has less data so it should take as long.
Do all the rules validate? I don't know of any limitations on how many you can have. And it works in Prod.
Thanks,
BW