Automata theoretic techniques for modal logics of programs: (Extended abstract)

  • Authors:
  • Moshe Y. Vardi;Pierre Wolper

  • Affiliations:
  • -;-

  • Venue:
  • STOC '84 Proceedings of the sixteenth annual ACM symposium on Theory of computing
  • Year:
  • 1984

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Abstract

We present a new technique for obtaining decision procedures for modal logics of programs. The technique centers around a new class of finite automata on infinite trees for which the emptiness problem can be solved in polynomial time. The decision procedures then consist of constructing an automaton Af for a given formula f, such that Af accepts some tree if and only if f is satisfiable. We illustrate our technique by giving an exponential decision procedure for deterministic propositional dynamic logic and a variant of the &mgr-calculus of Kozen.