Towards Abstract Interpretation of Epistemic Logic

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Abstract

The model-checking problem is to decide, given a formula φ and an interpretation M, whether M satisfies φ, written M |= φ. Model-checking algorithms for temporal logics were initially developed with finite models (such as models of hardware) in mind so that M |= φ is decidable. As interest grew in model-checking infinite systems, other approaches were developed based on approximating the model-checking algorithm so that it still terminates with some useful output.
In this work we present a model-checking algorithm for a multiagent epistemic logic contain- ing operators for common and distributed knowledge. The model-checker is developed as a function directly from the semantics of the logic, in a style that could be applied straight- forwardly to derive model-checkers for other logics. Secondly, we consider how to abstract the model-checker using abstract interpretation, yielding a procedure applicable to infinite models. The abstract model-checker allows model-checking with infinite-state models. When applied to the problem of whether M |= φ, it terminates and returns the set of states in M at which φ might hold. If the set is empty, then M definitely does not satisfy φ, while if the set is non-empty then M possibly satisfies φ.
Original languageEnglish
Publication dateAug 2012
Number of pages3
Publication statusPublished - Aug 2012
Event8th Scandinavian Logic Symposium - RUC, Roskilde, Denmark
Duration: 20 Aug 201221 Aug 2012
http://scandinavianlogic.weebly.com/

Symposium

Symposium8th Scandinavian Logic Symposium
LocationRUC
CountryDenmark
CityRoskilde
Period20/08/201221/08/2012
Internet address

Keywords

  • modal logic
  • abstract interpretation

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