Translation of Safety-Critical Software Requirements Specification to Lustre

Abstract

SpecTRM-RL (Specification Tools and Requirements Methodology-Requirements Language) is a modeling language for describing safety-critical software requirements. However, SpecTRM-RL does not support formal verification, which plays a very important role in developing safety-critical systems and software. Lustre is a dataflow synchronous language designed for programming reactive systems. Lustre supports the analysis and formal verification as well as code generation. Therefore, by translating SpecTRM-RL into Lustre, it not only will endow verification function to SpecTRM-RL, but also will make it possible that SpecTRM-RL supports various analysis approaches of codes by using previously developed translator which converts Lustre into NuSMV, PVS, and SAL. In this paper, I present the rules to translate SpecTRM-RL to the Lustre language, and also present an empirical study in which we practically translate a SpecTRM-RL requirements document into Lustre using the rules proposed. This study shows that SpecTRM-RL can be effectively converted into Lustre so that it can support formal verification.