State extensions for java pathfinder

  • Authors:
  • Tihomir Gvero;Milos Gligoric;Steven Lauterburg;Marcelo d'Amorim;Darko Marinov;Sarfraz Khurshid

  • Affiliations:
  • University of Belgrade, Belgrade, Serbia;University of Belgrade, Belgrade, Serbia;University of Illinois, Urbana, IL, USA;University of Illinois, Urbana, IL, USA;University of Illinois, Urbana, IL, USA;University of Texas at Austin

  • Venue:
  • Proceedings of the 30th international conference on Software engineering
  • Year:
  • 2008

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Abstract

Java PathFinder (JPF) is an explicit-state model checker for Java programs. JPF implements a backtrackable Java Virtual Machine (JVM) that provides non-deterministic choices and control over thread scheduling. JPF is itself implemented in Java and runs on top of a host JVM. JPF represents the JVM state of the program being checked and performs three main operations on this state representation: bytecode execution, state backtracking, and state comparison. This paper summarizes four extensions that we have developed to the JPF state representation and operations. One extension provides a new functionality to JPF, and three extensions improve performance of JPF in various scenarios. Some of our code has already been included in publicly available JPF.