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Unifying concurrent and relational refinement

Boiten, Eerke Albert, Derrick, John (2002) Unifying concurrent and relational refinement. Electronic Notes in Theoretical Computer Science, 70 (3). pp. 94-131. ISSN 1571-0661. (doi:10.1016/S1571-0661(05)80488-8) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:13766)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
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Refinement in a concurrent context, as typified by a process algebra, takes a number of different forms depending on what is considered observable, where observations record, for example, which events a system is prepared to accept or refuse. Examples of concurrent refinement relations include trace refinement, failures-divergences refinement and bisimulation. Refinement in a state-based language such as Z, on the other hand, is defined using a relational model in terms of input/output behaviour of abstract programs. These refinements are verified by using two simulation rules which help make the verification tractable. The purpose of this paper is to unify these two standpoints, and we do so by generalising the standard relational model to include additional observable aspects. The central result of the paper is then to develop simulation rules to verify relations such as failures-divergences refinement in a relational setting, and show how these might be applied in a specification language such as Z.

Item Type: Article
DOI/Identification number: 10.1016/S1571-0661(05)80488-8
Additional information: REFINE 02: The BCS FACS Refinement Workshop
Uncontrolled keywords: refinement, Z, CSP, Object-Z, failures-divergences
Subjects: Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Computing
Depositing User: Eerke Boiten
Date Deposited: 24 Nov 2008 18:00 UTC
Last Modified: 16 Nov 2021 09:51 UTC
Resource URI: (The current URI for this page, for reference purposes)

University of Kent Author Information

Boiten, Eerke Albert.

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Derrick, John.

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