Duet: Static Analysis for Unbounded Parallelism

Abstract. Duet is a static analysis tool for concurrent programs in which the number of executing threads is not statically bounded. Duet has a modular architecture, which is based on separating the invari-ant synthesis problem in two subtasks: (1) data dependence analysis, which is used to construct a data flow model of the program, and (2) domain, which generates invariants. This separation of concerns allows researchers working on data dependence analysis and abstract domains to combine their efforts toward solving the challenging problem of static analysis for unbounded concurrency. In this paper, we discuss the archi-tecture of Duet as well as two data dependence analyses that have been implemented in the tool.