Abstract
Multithreaded software systems are prone to errors due to the difficulty of reasoning about multiple interleaved threads operating on shared data. Static checkers that analyze a program's behavior over all execution paths and all thread interleavings are a powerful approach to identifying bugs in such systems. In this paper, we present Calvin, a scalable and expressive static checker for multithreaded programs based on automatic theorem proving. To handle realistic programs, Calvin performs modular checking of each procedure called by a thread using specifications of other procedures and other threads. Our experience applying Calvin to several real-world programs indicates that Calvin has a moderate annotation overhead and can catch common defects in multithreaded programs, such as synchronization errors and violations of data invariants.
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