A formal approach to AADL model-based software engineering

Hana Mkaouar (1) , Bechir Zalila (1) , Jérôme Hugues (2) , Mohamed Jmaiel (1)

1 CRNS - Centre de Recherche en Numérique de Sfax
2 DISC - Département d'Ingénierie des Systèmes Complexes

Formal methods have become a recommended practice in safety-critical software engineering. To be formally verified, a system should be specified with a specific formalism such as Petri nets, automata and process algebras, which requires a formal expertise and may become complex especially with large systems. In this paper, we report our experience in the formal verification of safety-critical real-time systems. We propose a formal mapping for a real-time task model using the LNT language, and we describe how it is used for the integration of a formal verification phase in an AADL model-based development process. We focus on real-time systems with event-driven tasks, asynchronous communication and preemptive fixed-priority scheduling. We provide a complete tool-chain for the automatic model transformation and formal verification of AADL models. Experimentation illustrates our results with the Flight control system and Line follower robot case studies.

Mots clés: AADL; LNT; Semantics

Domaines: Autre

Hana Mkaouar, Bechir Zalila, Jérôme Hugues, Mohamed Jmaiel. A formal approach to AADL model-based software engineering. International Journal on Software Tools for Technology Transfer, 2020, 22 (2), pp.219-247. ⟨10.1007/s10009-019-00513-7⟩. ⟨hal-02988005⟩