Download ABZ 2014: The Landing Gear Case Study: Case Study Track, by Frédéric Boniol, Virginie Wiels, Yamine Ait Ameur, PDF

By Frédéric Boniol, Virginie Wiels, Yamine Ait Ameur, Klaus-Dieter Schewe (eds.)

This quantity includes court cases of the Case examine song, held on the 4th overseas convention, ABZ 2014, in Toulouse, France, in June 2014. The eleven papers awarded have been rigorously reviewed and chosen from a number of submissions. They use diversified formal ideas: B, ASM, Fiacre. in addition they suggest other forms of verification resembling evidence, version checking, try out iteration, run-time tracking, and simulation.

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Extra info for ABZ 2014: The Landing Gear Case Study: Case Study Track, Held at the 4th International Conference on Abstract State Machines, Alloy, B, TLA, VDM, and Z, Toulouse, France, June 2-6, 2014. Proceedings

Example text

A more powerful validation approach is based on scenario construction by the ASM validator AsmetaV [10]. The validator is based on the AsmetaS simulator and on the Avalla modeling language. This last provides constructs to express execution scenarios in an algorithmic way as interaction sequences consisting of (a) actions committed by the user to set the environment, to check the machine state, and to ask for the execution of certain transition rules, and (b) the reaction of the machine to make one (or a sequence of) step(s) in response of the user actions.

The pilot has a handle with two positions: UP and DOWN When gears are retracted and the handle is going from UP to DOWN, the extending sequence is performed ENV-5 FUN-4 24 W. -R. 3. 6 25 ENV-12 ENV-13 The Analogical Switch An important characteristic of the equipment is the switch situated between the general electro-valve and the software. 7 W. -R. Abrial The Software Input and Outputs Here we summarize the inputs and outputs of the software. 8 ENV-21 Cases of Inconsistencies In this section of the requirements, we show the various timings implying some anomaly in the behavior of the system.

Give informal requirements to the system (this is done in section 4). During the requirement definitions, we use the requirement tool ProR [8,5]. 2. Refinement Strategy. 2). 3. Formal Model. Develop the formal model by means of several refinements without forgetting to perform all proofs, in particular the partial deadlock freeness proofs (this can be seen on the website [1]). During the formal developments, we use the model-checker of ProB [8] and also the animators of ProB and AnimB. 1 W. -R. Abrial Requirements Introduction As was announced in the introduction, we simplified some properties proposed in the case study or we omitted some of them.

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