摘要: In modular verification the specification of a module consists two parts. One part describes guaranteed behavior module. The other assumed environment with which is interacting. This called assume-guarantee paradigm. Even when one specifies in branching temporal logic, assumption pair concerns interaction along each computation, and therefore often naturally expressed linear logic. this paper we consider specifications given by an LTL formula guarantee CTL formula. Verifying modules respect to such linear-branching model-checking problem. We apply automata-theoretic techniques obtain algorithm whose running time size guarantee, but doubly exponential assumption. also show that high complexity inherent proving problem EXPSPACE-complete. lower bound applies even if restricted be specified /spl forall/CTL, universal fragment CTL.