Reachability in Succinct and Parametric One-Counter Automata

  • Christoph Haase
  • Stephan Kreutzer
  • Joël Ouaknine
  • James Worrell
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5710)


One-counter automata are a fundamental and widely-studied class of infinite-state systems. In this paper we consider one-counter automata with counter updates encoded in binary—which we refer to as the succinct encoding. It is easily seen that the reachability problem for this class of machines is in PSpace and is NP-hard. One of the main results of this paper is to show that this problem is in fact in NP, and is thus NP-complete.

We also consider parametric one-counter automata, in which counter updates be integer-valued parameters. The reachability problem asks whether there are values for the parameters such that a final state can be reached from an initial state. Our second main result shows decidability of the reachability problem for parametric one-counter automata by reduction to existential Presburger arithmetic with divisibility.


Weighted Graph Atomic Formula Linear Polynomial Negative Cycle Reachability Problem 
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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© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Christoph Haase
    • 1
  • Stephan Kreutzer
    • 1
  • Joël Ouaknine
    • 1
  • James Worrell
    • 1
  1. 1.Computing LaboratoryOxford UniversityUK

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