Before revision:  This framework works on both unreserved as well as HV reserved layer model for M(\geq 2) metal layers and accommodates different capacity profiles of the routing resources, due to uniform or different cases of metal pitch variation across the metals layers akin to the latest technologies.
After revision:  Different capacity profiles for the routing regions, such as uniform or non-uniform different cases of metal pitch variation across the metals layers akin to the latest technologies.