Abstract. We propose a SAT-based bounded verification technique, called TCBMC, for threaded C programs. Our work is based on CBMC, which models sequential C programs in which the number of executions for each loop and the depth of recursion are bounded. The novelty of our approach is in bounding the number of context switches allowed among threads. Thus, we obtain an efficient modeling that can be sent to a SAT solver for property checking. We also suggest a novel technique for modeling mutexes and Pthread conditions in concurrent programs. Using this bounded technique, we can detect bugs that invalidate safety properties. These include races and deadlocks, the detection for which is crucial for concurrent programs.
A version for threaded programs REF is based on bounding the number of context switches and synchronizing globally visible operations by conditioning them on the number of context switches that have occurred so far.
Bounded Model Checking of Concurrent Programs
CAV
Computer Science