On the reuse of symbolic simulation results for incremental equivalence verification of switch-level circuits

Incremental methods are successfully applied to deal with successive verifications of slightly modified switch-level networks. That is, only those parts affected by the changes are symbolically traversed for verification. In this paper, we present an incremental technique for symbolic simulators which is inspired in both existing incremental techniques for non-symbolic simulators and a token-passing mechanisms in Petri nets