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Many applications are concurrent and communicate over a network. The non-determinism in the thread and communication schedules makes it desirable to model check such systems. However, a simple state space exploration scheme is not applicable, as backtracking results in repeated communication operations. A cache-based approach solves this problem by hiding redundant communication operations from the...
Model checking finds failures in software by exploring every possible execution schedule. Until recently it has been mainly applied to stand-alone applications. This paper presents the I/O-cache, an extension for a Java model checker to support networked programs. It contains a cache module, which captures data streams between a target process and its peer processes. This demonstration also shows...
For software executing several threads in parallel, testing is unreliable, as it cannot cover all thread schedules. Model checking, however, can cover all possible thread interleavings. Software model checkers can directly verify an implementation, but typically cannot handle network input/output operations, which most programs require. This shortcoming can be addressed by a special model checker...
Testing cannot cover all execution schedules in concurrent software. Model checking, however, is capable of verifying the outcome of all possible executions. It has been applied successfully to networked software, with all processes being analyzed in conjunction. Unfortunately, this approach does not scale very well. This paper presents a partial-order reduction through which a performance gain of...
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