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

  • Steve Schneider
  • Helen Treharne
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5423)

Abstract

This paper introduces action refinement in the context of CSP||B. Our motivation to include this notion of refinement within the CSP||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 are refined by sequences of concrete events. A complementary notion of refinement between B machines is also introduced, yielding compositionality results for refinement of CSP||B controlled components. The paper also introduces a notion of I/O refinement into our action refinement framework.

Keywords

Encapsulation Aceto Derrick 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Steve Schneider
    • 1
  • Helen Treharne
    • 1
  1. 1.Department of ComputingUniversity of SurreyUK

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