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.)

ISBN-10: 331907511X

ISBN-13: 9783319075112

This quantity comprises court cases of the Case learn tune, held on the 4th foreign convention, ABZ 2014, in Toulouse, France, in June 2014. The eleven papers offered have been rigorously reviewed and chosen from a number of submissions. They use diversified formal thoughts: B, ASM, Fiacre. in addition they suggest other forms of verification corresponding to evidence, version checking, try out iteration, run-time tracking, and simulation.

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Extra resources 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

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Arcaini, A. Gargantini, and E. Riccobene between monitored (only read by the machine and modified by the environment), and controlled (read and written by the machine). A computation of an ASM is a finite or infinite sequence s0 , s1 , . . , sn , . . of states of the machine, where s0 is an initial state and each sn 1 is obtained from sn by simultaneously firing all the transition rules which are enabled in sn . The (unique) main rule is a transition rule and represents the starting point of the computation.

Introducing the handle 2. Introducing analogical switch 3. Introducing timing constraints 4. Introducing lights in the cockpit 5. Introducing three doors 6. Introducing three gears 7. Refining Electro-valves Again, the following table summarize the connections between the refinement strategy and the requirements defined in section 4: this ensures, a priori, that all requirements are indeed covered by our approach. Refinement Environment Function Anomaly 0 ENV-1(p),2-4,7(p),9(p)-13(p),19(p),20(p) FUN-4-8,12(p),13(p) - - - 1 ENV-5 2 ENV-14,15,16,17(p),18,19(p) - - 3 EVN-17 FUN-1,2,3 ANM-1-7 4 ENV-6,21 FUN-9,10,11 - 5 ENV-1(p),19(p) - - 6 ENV-1,19 - - 7 ENV-7-13,20 FUN-12,13 - (p) means the related requirement is PARTIALLY taken into account.

In modeling, we have a view of the system under study that is larger than that of the software alone. In fact, the software is only one (sometimes small) part of the complete system. Thus, we shall cover the software but also the environment within which this software is going to evolve. – We shall not show the model directly to the “client” : he might have some difficulties understanding the mathematics used in the model. But, thanks to the animation of the model (using ProB or AnimB), we obtain a cheap executable prototype of the system.

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