Formal Verification Method Based on Binary Decision Diagrams for Distributed/Concurrent Systems

Abstract

Distributed/concurrent systems consist of many concurrent processes, and behave on strict timing conditions. It is important to verify the timing conditions of distributed/concurrent systems. In this paper, we propose formal verification method based on Binary Decision Diagrams(BDDs) for distributed/concurrent systems as follows: (1) We encode timed Kripke structure into Binary Decision Diagrams corresponding to patterns of timing constraints. (2) We verify systems by symbolic model-checking, which consists of both inverse image computation and Difference Bounds Matrices(DBMs). We show our proposed method effective by some example.