Galois connections for flow algebras

  • Authors:
  • Piotr Filipiuk;Michał Terepeta;Hanne Riis Nielson;Flemming Nielson

  • Affiliations:
  • Technical University of Denmark;Technical University of Denmark;Technical University of Denmark;Technical University of Denmark

  • Venue:
  • FMOODS'11/FORTE'11 Proceedings of the joint 13th IFIP WG 6.1 and 30th IFIP WG 6.1 international conference on Formal techniques for distributed systems
  • Year:
  • 2011

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Abstract

We generalise Galois connections from complete lattices to flow algebras. Flow algebras are algebraic structures that are less restrictive than idempotent semirings in that they replace distributivity with monotonicity and dispense with the annihilation property; therefore they are closer to the approach taken by Monotone Frameworks and other classical analyses. We present a generic framework for static analysis based on flow algebras and program graphs. Program graphs are often used in Model Checking to model concurrent and distributed systems. The framework allows to induce new flow algebras using Galois connections such that correctness of the analyses is preserved. The approach is illustrated for a mutual exclusion algorithm.