An Abstract Memory Functor for Verified C Static Analyzers

Sandrine Blazy (1) , Vincent Laporte (2) , David Pichardie (1)

1 CELTIQUE - Software certification with semantic analysis
2 Institute IMDEA Software [Madrid]

Abstract interpretation provides advanced techniques to infer numerical invariants on programs. There is an abundant literature about numerical abstract domains that operate on scalar variables. This work deals with lifting these techniques to a realistic C memory model. We present an abstract memory functor that takes as argument any standard numerical abstract domain, and builds a memory abstract domain that finely tracks properties about memory contents, taking into account union types, pointer arithmetic and type casts. This functor is implemented and verified inside the Coq proof assistant with respect to the CompCert compiler memory model. Using the Coq extraction mechanism, it is fully executable and used by the Verasco C static analyzer.

Mots clés: low-level memory; abstract interpretation; Coq proof assistant; points-to analysis; numerical analysis

Domaines: Langage de programmation [cs.PL]

Sandrine Blazy, Vincent Laporte, David Pichardie. An Abstract Memory Functor for Verified C Static Analyzers. ACM SIGPLAN International Conference on Functional Programming (ICFP 2016), Sep 2016, Nara, Japan. pp.14, ⟨10.1145/2951913.2951937⟩. ⟨hal-01339969⟩