Abstract. In this paper, the challenges for using formal verification based on automatic tools, like model-checkers, in the industrial development process of safety critical systems is discussed. This usage must be integrated into an appropriate process and must allow for independent result-checking.Our approach is illustrated with a case study from the openETCS ITEA2 research project using the Systerel Smart Solver S3, a modern SAT-based model-checker for equivalence checking and safety properties analysis of Scade, C or Ada programs.
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