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Syntactic Abstraction of B Models to Generate Tests

Abstract : In a model-based testing approach as well as for the verification of properties, B models provide an interesting solution. However, for industrial applications, the size of their state space often makes them hard to handle. To reduce the amount of states, an abstraction function can be used, often combining state variable elimination and domain abstractions of the remaining variables. This paper complements previous results, based on domain abstraction for test generation, by adding a preliminary syntactic abstraction phase, based on variable elimination. We define a syntactic transformation that suppresses some variables from a B event model, in addition to a method that chooses relevant variables according to a test purpose. We propose two methods to compute an abstraction A of an initial model M. The first one computes A as a simulation of M, and the second one computes A as a bisimulation of M. The abstraction process produces a finite state system. We apply this abstraction computation to a Model Based Testing process.
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https://hal.inria.fr/inria-00471324
Contributor : Nicolas Stouls Connect in order to contact the contributor
Submitted on : Wednesday, May 19, 2010 - 5:07:04 PM
Last modification on : Friday, February 4, 2022 - 3:08:20 AM
Long-term archiving on: : Thursday, September 23, 2010 - 12:33:12 PM

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  • HAL Id : inria-00471324, version 2
  • ARXIV : 1004.1262

Citation

Jacques Julliand, Nicolas Stouls, Pierre-Christophe Bué, Pierre-Alain Masson. Syntactic Abstraction of B Models to Generate Tests. TAP'10, 4th Int. Conference on Tests and Proofs, Jul 2010, Malaga, Spain. pp.151-166. ⟨inria-00471324v2⟩

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