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

By Yamine Ait Ameur, Klaus-Dieter Schewe

This publication constitutes the completely refereed lawsuits of the 4th overseas convention on summary kingdom Machines, B, TLA, VDM and Z, which came about in Toulouse, France, in June 2014. The thirteen complete papers awarded 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 equipment: summary country Machines (ASM), Alloy, B, TLA, VDM and Z. They proportion a standard conceptual origin and are established in either academia and for the layout and research of and software program structures. the most objective of this convention sequence is to give a contribution to the mixing of those formal equipment, clarifying their commonalities and changes to raised know how to mix varied techniques for reaching many of the projects in modeling, experimental validation and mathematical verification of trustworthy top of the range hardware/software systems.

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Our main challenge is complexity in concurrent and distributed systems. As shown in Fig. 1, we often need to verify the interactions between algorithms, not just individual algorithms in isolation. 1 As an example of such growth; in 2006 we launched S3, our Simple Storage Service. In the six years after launch, S3 grew to store 1 trillion objects [6]. 1 million requests per second [7]. Y. -D. ): ABZ 2014, LNCS 8477, pp. 25–39, 2014. c Springer-Verlag Berlin Heidelberg 2014 26 System S3 C. Newcombe Components Fault-tolerant low-level network algorithm Line count Benefit 804 PlusCal Found 2 design bugs.

Each of the operations of this model may also take as input the output of the concrete layer and their goal is to construct a matching abstract execution. For the above example of error codes it is sufficient to just rewrite the abstract program by reusing the error code returned by the concrete model and checking that it satisfies the condition err ∈ {ESUCCESS, EIO, . }. For more elaborate nondeterminism an SMT solver could be employed to make the proper choice. 000 lines of code. The C code generation will be limited to the models shaded in gray.

D. ) ABZ 2014. LNCS, vol. 8477, pp. 188–203. Springer, Heidelberg (2014) 14. : A Formal Model of a Virtual Filesystem Switch. In: Proc. of Software and Systems Modeling (SSV), pp. 33–45 (2012) 15. : Verification of a Virtual Filesystem Switch. , Rybalchenko, A. ) VSTTE 2013. LNCS, vol. 8164, pp. 242–261. Springer, Heidelberg (2014) 16. org 17. : Verifying Intel flash file system core specification. In: Modelling and Analysis in VDM: Proc. of the Fourth VDM/Overture Workshop, School of Computing Science, Newcastle University, Technical Report CS-TR-1099, pp.

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