Compositional Verification for Component-based Systems and Application

Saddek Bensalem (1) , Marius Bozga (1) , Thanh-Hung Nguyen (1) , Joseph Sifakis (1)

1 VERIMAG - IMAG - VERIMAG

We present a compositional method for the verification of component-based systems described in a subset of the BIP language encompassing multi-party interaction without data transfer. The method is based on the use of two kinds of invariants. Component invariants which are over-approximations of components' reachability sets. Interaction invariants which are constraints on the states of components involved in interactions. Interaction invariants are obtained by computing traps of finite-state abstractions of the verified system. The method is applied for deadlock verification in the D-Finder tool. D-Finder is an interactive tool that takes as input BIP programs and applies proof strategies to eliminate potential deadlocks by computing increasingly stronger invariants. The experimental results on non-trivial examples allow either to prove deadlock-freedom or to identify very few deadlock configurations that can be analyzed by using state space exploration.

Mots clés: compositional verification; invariant generation; deadlock-freedom; component-based systems

Domaines: Systèmes embarqués

Saddek Bensalem, Marius Bozga, Thanh-Hung Nguyen, Joseph Sifakis. Compositional Verification for Component-based Systems and Application. Automated Technology for Verification and Analysis 6th International Symposium, ATVA 2008, Oct 2008, Seoul, South Korea. pp.64-79, ⟨10.1007/978-3-540-88387-6⟩. ⟨hal-00359303⟩