Changing System Interfaces Consistently: A New Refinement Strategy for CSP||B

Schneider, S and Treharne, H (2009) Changing System Interfaces Consistently: A New Refinement Strategy for CSP||B In: 7th International Conference on Integrated Formal Methods, 2009-02-16 - 2009-02-19, Dusseldorf, GERMANY.

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Abstract

This paper introduces action refinement in the context of CSP||B. Our motivation to include this notion of refinement within the CSP parallel to B framework is the desire to increase flexibility in the refinement process. We introduce the ability to change the events of a CSP process and the B machines when refining a system. Notions of refinement based on traces and on traces/divergences are introduced in which abstract, events arc, refined by sequences of concrete events. A complementary notion of refinement between B machines is also introduced, yielding compositionality results for refinement of CSP parallel to B controlled components. The paper also introduces a notion of I/O refinement into our action refinement framework.

Item Type:	Conference or Workshop Item (Paper)
Divisions:	Faculty of Engineering and Physical Sciences > Computing Science
Depositing User:	Symplectic Elements
Date Deposited:	29 Sep 2011 11:44
Last Modified:	23 Sep 2013 18:45
URI:	http://epubs.surrey.ac.uk/id/eprint/7191

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