Abstract State Machines, Alloy, B, TLA, VDM, and Z: 4th by Yamine Ait Ameur, Klaus-Dieter Schewe

By Yamine Ait Ameur, Klaus-Dieter Schewe

This e-book constitutes the completely refereed lawsuits of the 4th foreign convention on summary kingdom Machines, B, TLA, VDM and Z, which came about in Toulouse, France, in June 2014. The thirteen complete papers offered including three invited talks and 19 brief papers have been rigorously reviewed and chosen from eighty one submissions. The ABZ convention sequence is devoted to the cross-fertilization of six similar state-based and machine-based formal tools: summary kingdom Machines (ASM), Alloy, B, TLA, VDM and Z. They proportion a standard conceptual beginning and are everyday in either academia and for the layout and research of and software program structures. the most target of this convention sequence is to give a contribution to the mixing of those formal equipment, clarifying their commonalities and transformations to higher know the way to mix diversified techniques for reaching a number of the projects in modeling, experimental validation and mathematical verification of trustworthy fine quality hardware/software platforms.

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We found this style to be engaging and fun when applied to the set of simple problems that we attempted in our evaluation. However, we don’t know how well this style works for more complex problems. 1 Handle All Types of Problems We don’t have time to learn multiple methods, so we want a single method that works for many types of problem: lock-free and wait-free concurrent algorithms, conventional concurrent algorithms (using locks, condition variables, semaphores), fault-tolerant distributed systems, and data-modelling.

Hertfordshire (1987) 29. html 30. : Programming in Scala: A Comprehensive Step-by-step Guide, 1st edn. Artima Incorporation, USA (2008) 31. : Alloy Meets the Algebra of Programming: A Case Study. IEEE Transactions on Software Engineering 39(3), 305–326 (2013) 32. : Formal Specification of an Erase Block Management Layer for Flash Memory. , Legay, A. ) HVC 2013. LNCS, vol. 8244, pp. 214–229. Springer, Heidelberg (2013) 33. : Crash-Safe Refinement for a Verified Flash File System. Technical report, University of Augsburg (2014) 34.

For deeper verification of liveness, the TLA+ proof system will soon support machinechecked proofs using temporal logic. The Alloy book says that it supports checking liveness6 , but only on short traces7 . When evaluating Alloy, Zave found [33], “There are no temporal operators in Alloy. Strictly speaking the progress property could be expressed in Alloy using quantification over timestamps, but there is no point in doing so because the Alloy Analyzer could not check it meaningfully . . g. termination of loops and functions, but we don’t know if VCC can express fairness or verify global liveness properties.

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