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Gradual Program Verification

  • Johannes Bader
  • Jonathan Aldrich
  • Éric Tanter
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10747)

Abstract

Both static and dynamic program verification approaches have significant disadvantages when considered in isolation. Inspired by research on gradual typing, we propose gradual verification to seamlessly and flexibly combine static and dynamic verification. Drawing on general principles from abstract interpretation, and in particular on the recent Abstracting Gradual Typing methodology of Garcia et al., we systematically derive a gradual verification system from a static one. This approach yields, by construction, a gradual verification system that is compatible with the original static system, but overcomes its rigidity by resorting to dynamic verification when desired. As with gradual typing, the programmer can control the trade-off between static and dynamic checking by tuning the (im)precision of pre- and postconditions. The formal semantics of the gradual verification system and the proofs of its properties, including the gradual guarantees of Siek et al., have been fully mechanized in the Coq proof assistant.

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Johannes Bader
    • 1
  • Jonathan Aldrich
    • 2
  • Éric Tanter
    • 3
  1. 1.Microsoft CorporationRedmondUSA
  2. 2.Institute for Software ResearchCarnegie Mellon UniversityPittsburghUSA
  3. 3.PLEIAD Laboratory, Computer Science Department (DCC)University of ChileSantiagoChile

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