Model exploration with temporal logic query checking

A temporal logic query is a temporal logic formula with placeholders. Given a model, a solution to a query is a set of assignments of propositional formulas to placeholders, such that replacing the placeholders with any of these assignments results in a temporal logic formula that holds in the model. Query checking, first introduced by William Chan [2], is an automated technique for finding solutions to temporal logic queries. It allows discovery of the temporal properties of the system and as such may be a useful tool for model exploration and reverse engineering.This paper describes an implementation of a temporal logic query checker. It then suggests some applications of this tool, ranging from invariant computation to test case generation, and illustrates them using a Cruise Control System.

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