Contract Modeling and Verification with FormalSpecs Verifier Tool-Suite - Application to Ansaldo STS Rapid Transit Metro System Use Case

摘要

Motivated by the emergent research on mixed techniques of analysis and testing, we focus our attention on producing analysis results that can efficiently reduce the effort in testing a modern metro system. In particular, we promote contract-based design to formalize requirements and support different kind of analyses on hazards, coverage and signal independency. This work is carried out on the following three different levels: at the application level, the system under development is specified and modeled by the experts of the railway industrial domain; at the methodology level, the contract-based paradigm was adopted to join the application requirements with a rigorous formal view necessary for enabling an automated verification process; at the machinery level, the utilization of the FSV tool suite for aiding the design represents a twofold gain for its developers since, first, it provides a new occasion to validate and improve their technology for automatic analyses and, second, it lets them to identify the analysis technique of the equivalent model checking, to match the industrial need in reducing the effort of testing.