Abstract
This paper proposes a framework for verifying component-based software in the context of component evolution. This framework includes two stages: modular conformance testing for updating inaccurate model of the evolved component and modular verification for evolving component-based software. When a component is evolved after adapting some refinements, the proposed framework only focuses on this component and its model in order to update the model and recheck the whole evolved system. The framework also reuses the previous verification results and the previous models of the evolved component to reduce several steps of the model update and verification processes.