Download FM 2005: Formal Methods: International Symposium of Formal by Mathai Joseph (auth.), John Fitzgerald, Ian J. Hayes, PDF

By Mathai Joseph (auth.), John Fitzgerald, Ian J. Hayes, Andrzej Tarlecki (eds.)

This quantity comprises the lawsuits of Formal equipment 2005, the thirteenth InternationalSymposiumonFormalMethodsheldinNewcastleuponTyne,UK, in the course of July 18–22, 2005. Formal equipment Europe (FME, www.fmeurope.org) is an self sustaining organization which goals to stimulate using, and examine on, formal equipment for approach improvement. FME meetings all started with a VDM Europe symposium in 1987. considering then, the conferences have grown and feature been held approximately as soon as each 18 months. in the course of the years the symposia were notablysuccessfulinbringingtogetherresearchers,tooldevelopers,vendors,and clients, either from academia and from undefined. Formal equipment 2005 con?rms this good fortune. We got a hundred thirty submissions to the most convention, from around the world. every one submission used to be conscientiously refereed by means of not less than 3 reviewers. Then, after a thorough, in-depth dialogue, this system Committee chosen 31 papers for presentation on the convention. They shape the majority of this quantity. we wish to thank all of the application Committee individuals and the referees for his or her first-class and e?cient paintings. except the chosen contributions, the Committee invited 3 keynote lectures from Mathai Joseph, Marie-Claude Gaudel and Chris Johnson. you are going to ?nd the abstracts/papers for his or her keynote lectures during this quantity to boot. AninnovationfortheFM2005programwasapaneldiscussiononthehistory of formal tools, with Jean-Raymond Abrial, Dines Bjørner, Jim Horning and Cli? Jones as panelists. regrettably, it used to be impossible to re?ect this occasion within the present quantity, yet you are going to ?nd the cloth documenting it in other places (see the convention internet page).

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Extra resources for FM 2005: Formal Methods: International Symposium of Formal Methods Europe, Newcastle, UK, July 18-22, 2005. Proceedings

Example text

One can then use an appropriate program logic to show that the assertions hold (cf. [18, 7]). All of the proof obligations can be generated and shown modularly. For the proof, one may assume that the program invariants J1 and J2 hold. Class Loading and Initialization. The program invariants J1 and J2 are first established during class loading and initialization. Program execution starts with a class loading phase, followed by a class initialization phase. In the loading phase, each class of the program is loaded and its static fields are set to zero-equivalent values.

For example, Client ’s constructor in Fig. 2 needs to declare a precondition that says class Client is valid, that is, not mutable; otherwise, it would not be possible to prove that the program meets the non-reentrancy requirement of the expose block in the constructor’s implementation. sinv (whose possible values we will describe later), which can be mentioned in method specifications. sinv to require C to be valid, which in effect says that C ’s invariant holds but does not reveal the details of the invariant itself.

Pid=3821 [22] Z. pdf Modular Verification of Static Class Invariants K. Rustan M. ch Abstract. Object invariants describe the consistency of object-oriented data structures and are central to reasoning about the correctness of object-oriented software. But object invariants are not the only consistency conditions on which a program may depend. The data in object-oriented programs consists not just of object fields, but also of static fields, which hold data that is shared among objects. The consistency of static fields is described by static class invariants, which are enforced at the class level.

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