Advertisement

Bridging the Gap: Automatic Verified Abstraction of C

  • David Greenaway
  • June Andronick
  • Gerwin Klein
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7406)

Abstract

Before low-level imperative code can be reasoned about in an interactive theorem prover, it must first be converted into a logical representation in that theorem prover. Accurate translations of such code should be conservative, choosing safe representations over representations convenient to reason about. This paper bridges the gap between conservative representation and convenient reasoning. We present a tool that automatically abstracts low-level C semantics into higher level specifications, while generating proofs of refinement in Isabelle/HOL for each translation step. The aim is to generate a verified, human-readable specification, convenient for further reasoning.

Keywords

Execution Path Exception Handler Loop Body guardE Statement Translation Step 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Alkassar, E., Hillebrand, M., Leinenbach, D., Schirmer, N., Starostin, A., Tsyban, A.: Balancing the load — leveraging a semantics stack for systems verification. JAR: Special Issue Operat. Syst. 42(2-4), 389–454 (2009)zbMATHGoogle Scholar
  2. 2.
    Alkassar, E., Paul, W.J., Starostin, A., Tsyban, A.: Pervasive Verification of an OS Microkernel. In: Leavens, G.T., O’Hearn, P., Rajamani, S.K. (eds.) VSTTE 2010. LNCS, vol. 6217, pp. 71–85. Springer, Heidelberg (2010)CrossRefGoogle Scholar
  3. 3.
    Cock, D., Klein, G., Sewell, T.: Secure Microkernels, State Monads and Scalable Refinement. In: Mohamed, O.A., Muñoz, C., Tahar, S. (eds.) TPHOLs 2008. LNCS, vol. 5170, pp. 167–182. Springer, Heidelberg (2008)CrossRefGoogle Scholar
  4. 4.
    Cohen, E., Dahlweid, M., Hillebrand, M., Leinenbach, D., Moskal, M., Santen, T., Schulte, W., Tobies, S.: VCC: A Practical System for Verifying Concurrent C. In: Berghofer, S., Nipkow, T., Urban, C., Wenzel, M. (eds.) TPHOLs 2009. LNCS, vol. 5674, pp. 23–42. Springer, Heidelberg (2009)CrossRefGoogle Scholar
  5. 5.
    The Frama-C platform (2008), http://www.frama-c.cea.fr/
  6. 6.
    ISO/IEC. Programming languages — C. Technical Report 9899:TC2, ISO/IEC JTC1/SC22/WG14 (May 2005)Google Scholar
  7. 7.
    Klein, G., Elphinstone, K., Heiser, G., Andronick, J., Cock, D., Derrin, P., Elkaduwe, D., Engelhardt, K., Kolanski, R., Norrish, M., Sewell, T., Tuch, H., Winwood, S.: seL4: Formal verification of an OS kernel. In: 22nd SOSP, pp. 207–220. ACM (2009)Google Scholar
  8. 8.
    Moy, Y.: Automatic Modular Static Safety Checking for C Programs. PhD thesis, Université Paris-Sud, Paris, France (January 2009)Google Scholar
  9. 9.
    Muchnick, S.S.: Advanced Compiler Design and Implementation. Morgan Kaufmann Publishers (1997)Google Scholar
  10. 10.
    Nipkow, T., Paulson, L., Wenzel, M.: Isabelle/HOL. LNCS, vol. 2283. Springer, Heidelberg (2002)zbMATHGoogle Scholar
  11. 11.
    Norrish, M.: C-to-Isabelle parser, version 0.7.2 (January 2012), http://ertos.nicta.com.au/software/c-parser/
  12. 12.
    Schirmer, N.: Verification of Sequential Imperative Programs in Isabelle/HOL. PhD thesis, Technische Universität München (2006)Google Scholar
  13. 13.
    Tuch, H.: Formal Memory Models for Verifying C Systems Code. PhD thesis, School Comp. Sci. & Engin., University NSW, Sydney 2052, Australia (August 2008)Google Scholar
  14. 14.
    Tuch, H., Klein, G., Norrish, M.: Types, bytes, and separation logic. In: Hofmann, M., Felleisen, M. (eds.) 34th POPL, pp. 97–108. ACM (2007)Google Scholar
  15. 15.
    Winwood, S., Klein, G., Sewell, T., Andronick, J., Cock, D., Norrish, M.: Mind the Gap: A Verification Framework for Low-Level C. In: Berghofer, S., Nipkow, T., Urban, C., Wenzel, M. (eds.) TPHOLs 2009. LNCS, vol. 5674, pp. 500–515. Springer, Heidelberg (2009)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • David Greenaway
    • 1
    • 2
  • June Andronick
    • 1
    • 2
  • Gerwin Klein
    • 1
    • 2
  1. 1.NICTASydneyAustralia
  2. 2.School of Computer Science and EngineeringUNSWSydneyAustralia

Personalised recommendations