Abstract
AbstractMulti-threaded unit tests for high-performance thread-safe data structures typically do not test all behaviour, because only a single scheduling of threads is witnessed per invocation of the unit tests. Model checking such unit tests allows to verify all interleavings of threads. These tests could be written in or compiled to LLVM IR. Existing LLVM IR model checkers like divine and Nidhugg, use an LLVM IR interpreter to determine the next state. This paper introduces llmc, a multi-core explicit-state model checker of multi-threaded LLVM IR that translates LLVM IR to LLVM IR that is executed instead of interpreted. A test suite of 24 tests, stressing data structures, shows that on average llmc clearly outperforms the state-of-the-art tools divine and Nidhugg.
Publisher
Springer International Publishing
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