External Memory LTL Model Checking
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| Year of publication | 2009 |
| MU Faculty or unit | |
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| Description | Model checking is an increasingly popular method for formal verification of safety-critical systems. This thesis is focused on fighting state explosion (the well-known problem in model checking) by employing external memory, which can have by orders of magnitude larger capacity than internal memory. For computations, probably the most proper external memory device is hard disk. It has a sufficient speed and capacity for a low price. As a drawback, hard disks suffer from long access times, which means than data must be read by blocks in order to preserve a sufficient transfer rate. Therefore, model checking algorithms must be re-designed to behave efficiently w.r.t. the number of performed I/O operations when a substantial part of a state space is stored on disk. The thesis offers I/O-efficient solutions to the two well-known model checking problems --- reachability analysis and LTL model checking. All newly designed algorithms have been implemented, thoroughly experimentally evaluated and analysed. |
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