Abstract
This paper presents a specification of the hybrid ERTMS/ETCS level 3 standard in the framework of the case study proposed for the 6th edition of the ABZ conference. The specification is based on the method and tools, developed in the ANR FORMOSE project, for the modeling and formal verification of critical and complex system requirements. The requirements are specified with SysML/KAOS goal diagrams and are automatically translated into B System specifications, in order to obtain the architecture of the formal specification. Domain properties are specified by ontologies with the SysML/KAOS domain modeling language, based on OWL and PLIB. Their automatic translation completes the structural part of the formal specification. The only part of the specification, which must be manually completed, is the body of events. The construction is incremental, based on the refinement mechanisms existing within the involved methods. The formal specification of the case study is composed of seven refinement levels and all the proofs have been discharged with the Rodin prover.
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- 1.
For an event G, G_Guard represents the guards of G and G_Post represents the post condition of its actions.
- 2.
The rear is deduced from the front and length of the train, since a train equipped with a TIMS broadcast its length and its integrity.
- 3.
Stakeholders, here, include the co-authors of this paper and the members of the FORMOSE project involved in the study. We plan an assessment on more external entities.
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Acknowledgment
This work is carried out within the framework of the FORMOSE project [2] funded by the French National Research Agency (ANR). It is also partly supported by the Natural Sciences and Engineering Research Council of Canada (NSERC).
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Tueno Fotso, S.J., Frappier, M., Laleau, R., Mammar, A. (2018). Modeling the Hybrid ERTMS/ETCS Level 3 Standard Using a Formal Requirements Engineering Approach. In: Butler, M., Raschke, A., Hoang, T., Reichl, K. (eds) Abstract State Machines, Alloy, B, TLA, VDM, and Z. ABZ 2018. Lecture Notes in Computer Science(), vol 10817. Springer, Cham. https://doi.org/10.1007/978-3-319-91271-4_18
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