Precise Thread-Modular Abstract Interpretation of Concurrent Programs Using Relational Interference Abstractions

  • Raphaël Monat
  • Antoine MinéEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10145)


We present a static analysis by abstract interpretation of numeric properties in multi-threaded programs. The analysis is sound (assuming a sequentially consistent memory), parameterized by a choice of abstract domains and, in order to scale up, it is modular, in that it iterates over each thread individually (possibly several times) instead of iterating over their product. We build on previous work that formalized rely-guarantee verification methods as a concrete, fixpoint-based semantics, and then apply classic numeric abstractions to abstract independently thread states and thread interference. This results in a flexible algorithm allowing a wide range of precision versus cost trade-offs, and able to infer even flow-sensitive and relational thread interference. We implemented our method in an analyzer prototype for a simple language and experimented it on several classic mutual exclusion algorithms for two or more threads. Our prototype is instantiated with the polyhedra domain and employs simple control partitioning to distinguish critical sections from surrounding code. It relates the variables of all threads using polyhedra, which limits its scalability in the number of variables. Nevertheless, preliminary experiments and comparison with ConcurInterproc show that modularity enables scaling to a large number of thread instances, provided that the total number of variables stays small.


Program verification Concurrent programs Abstract interpretation Thread-modular analyses Rely-guarantee methods Numeric invariant generation 


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© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.École Normale Supérieure de LyonLyonFrance
  2. 2.École Normale SupérieureParisFrance
  3. 3.Sorbonnes Universités, UPMC Univ. Paris 6, Laboratoire d’informatique de Paris 6 (LIP6)ParisFrance

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