Theoretical aspects of compositional symbolic execution

  • Authors:
  • Dries Vanoverberghe;Frank Piessens

  • Affiliations:
  • -;-

  • Venue:
  • FASE'11/ETAPS'11 Proceedings of the 14th international conference on Fundamental approaches to software engineering: part of the joint European conferences on theory and practice of software
  • Year:
  • 2011

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Abstract

Given a program and an assertion in that program, determining if the assertion can fail is one of the key applications of program analysis. Symbolic execution is a well-known technique for finding such assertion violations that can enjoy the following two interesting properties. First, symbolic execution can be precise: if it reports that an assertion can fail, then there is an execution of the program that will make the assertion fail. Second, it can be progressing: if there is an execution that makes the assertion fail, it will eventually be found. A symbolic execution algorithm that is both precise and progressing is a semidecision procedure. Recently, compositional symbolic execution has been proposed. It improves scalability by analyzing each execution path of each method only once. However, proving precision and progress is more challenging for these compositional algorithms. This paper investigates under what conditions a compositional algorithm is precise and progressing (and hence a semi-decision procedure).