Program Repair as a Game

  • Barbara Jobstmann
  • Andreas Griesmayer
  • Roderick Bloem
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3576)

Abstract

We present a conservative method to automatically fix faults in a finite state program by considering the repair problem as a game. The game consists of the product of a modified version of the program and an automaton representing the LTL specification. Every winning finite state strategy for the game corresponds to a repair. The opposite does not hold, but we show conditions under which the existence of a winning strategy is guaranteed. A finite state strategy corresponds to a repair that adds variables to the program, which we argue is undesirable. To avoid extra state, we need a memoryless strategy. We show that the problem of finding a memoryless strategy is NP-complete and present a heuristic. We have implemented the approach symbolically and present initial evidence of its usefulness.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Barbara Jobstmann
    • 1
  • Andreas Griesmayer
    • 1
  • Roderick Bloem
    • 1
  1. 1.Graz University of Technology 

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