Model checking FO(R) over one-counter processes and beyond

  • Authors:
  • Anthony Widjaja To

  • Affiliations:
  • LFCS, School of Informatics, University of Edinburgh

  • Venue:
  • CSL'09/EACSL'09 Proceedings of the 23rd CSL international conference and 18th EACSL Annual conference on Computer science logic
  • Year:
  • 2009

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Abstract

One-counter processes are pushdown processes over a singleton stack alphabet (plus a stack-bottom symbol). We study the problems of model checking asynchronous products of one-counter processes against 1) first-order logic FO(R) with reachability predicate, 2) the finite variable fragments FOk(R) (k ≥ 2) of FO(R), 3) EF-logic which is a fragment of FO2(R), and 4) all these logics extended with simple component-wise synchronizing predicates. We give a rather complete picture of their combined, expression, and data complexity. To this end, we show that these problems are poly-time reducible to two syntactic restrictions of Presburger Arithmetic, which are equi-expressive with first-order modulo counting theory of (N,