Abstract
The use of formal methods for verification and validation of critical and complex systems is important, but can be extremely tedious without modularisation mechanisms. SysML/KAOS is a requirements engineering method. It includes a goal modeling language to model requirements from stakeholder’s needs. It also contains a domain modeling language for the representation of system application domain using ontologies. Translation rules have been defined to automatically map SysML/KAOS models into B System specifications. Moreover, since the systems we are interested in naturally break down into subsystems (enabling the distribution of work between several agents: hardware, software and human), SysML/KAOS goal models allow the capture of assignments of requirements to agents responsible of their achievement. Each agent is associated with a subsystem. The contribution of this paper is an approach to ensure that a requirement assigned to a subsystem is well achieved by the subsystem. A particular emphasis is placed on ensuring that system invariants persist in subsystems specifications.
French National Research Agency (ANR).
Natural Sciences and Engineering Research Council of Canada (NSERC).
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Notes
- 1.
- 2.
The before-after predicate of \(E_1\) denotes the relationship holding between the state variable of machine \(M_1\) just before (denoted by \(x_1\)) and after (denoted by \(x_1'\)) the triggering of \(E_1\) [2].
- 3.
For an event G, G_Guard represents the guard of G and G_Post represents the post condition of its actions [24].
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Acknowledgment
This work is carried out within the framework of the FORMOSE project [5] 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., Leuschel, M. (2018). Formalisation of SysML/KAOS Goal Assignments with B System Component Decompositions. In: Furia, C., Winter, K. (eds) Integrated Formal Methods. IFM 2018. Lecture Notes in Computer Science(), vol 11023. Springer, Cham. https://doi.org/10.1007/978-3-319-98938-9_22
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