Abstract
This paper describes a model-based flow for the development of Interlocking Systems. The flow starts from a set of specifications in Controlled Natural Language (CNL), that are close to the jargon adopted in by domain experts, but fully formal. From the CNL, a complete SysML specification is extracted, leveraging various forms of diagrams, and enabling automated code generation. Several formal verification methods are supported. A complementary part of the flow supports the extraction of formal properties from legacy Interlocking Systems designed as Relay circuits. The flow is implemented in a comprehensive toolset, and is currently used by railway experts.
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Amendola, A. et al. (2020). A Model-Based Approach to the Design, Verification and Deployment of Railway Interlocking System. In: Margaria, T., Steffen, B. (eds) Leveraging Applications of Formal Methods, Verification and Validation: Applications. ISoLA 2020. Lecture Notes in Computer Science(), vol 12478. Springer, Cham. https://doi.org/10.1007/978-3-030-61467-6_16
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