By Frédéric Boniol, Virginie Wiels, Yamine Ait Ameur, Klaus-Dieter Schewe (eds.)
This quantity comprises court cases of the Case examine music, 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 diverse formal suggestions: B, ASM, Fiacre. in addition they suggest other kinds of verification akin to evidence, version checking, try iteration, run-time tracking, and simulation.
Read Online or Download 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 PDF
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Additional 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
Act6. Such software events stimulate the environment by means of some electro-valves. In response to this, the environment send messages to the software telling it that the corresponding device has change state. Then the software stimulates the next electro-valve, and so on. Here are the details of the electro-valve stimulations by the software: no EV act1 : sending pressurized_EV receiving response act2 : sending open_EV receiving response act3 : sending retract_EV or extend_EV receiving response act4 : sending closed_EV receiving response act5 : sending depressurize_EV receiving response act6 : no EV Aircraft Landing Gear System 31 At any moment, the software can also send to the environment the stimulation of an electro-valve which happen to be the “reverse” electro-valve of the one it last sent.
In the next reﬁnement, we become more speciﬁc: we introduce some intermediate pieces of equipment (in our case, the electro-valves) that are situated in between the software and the devices. The electro-valves transmit to the devices some hydraulic power able to move them. Some other peculiarity due to the hydraulic technology are introduced in a subsequent reﬁnement (the general electro-valve). It is fundamental to ensure that our embedded system behave in a correct fashion. The problem is to detect that some incorrect behavior has occurred.
Since no other solutions of modeling and analysis of the LGS case study are available at the moment of writing this paper, we are not able to report any related work. Of course, many successful applications exist in literature regarding the use of the ASMs for complex system modeling and analysis. Due to their multiplicity, we prefer to refer to  for a complete introduction on the ASM method and the presentation of the great variety of its successful applications. 2 Abstract State Machines Abstract State Machines (ASMs), whose complete presentation can be found in , are an extension of FSMs, where unstructured control states are replaced by states with arbitrary complex data.
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 by Frédéric Boniol, Virginie Wiels, Yamine Ait Ameur, Klaus-Dieter Schewe (eds.)