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Model checking

theory, algorithm, testing
To algorithmically check whether a program (the model) satisfies a specification.
The model is usually expressed as a directed graph consisting of nodes (or vertices) and edges. A set of atomic propositions is associated with each node. The nodes represents states of a program, the edges represent possible executions which alters the state, while the atomic propositions represent the basic properties that hold at a point of execution.
A specification language, usually some kind of temporal logic, is used to express properties.
The problem can be expressed mathematically as: given a temporal logic formula p and a model M with initial state s, decide if M,s \models p.
[“Automatic verification of finite state concurrent systems using temporal logic”, E.M. Clarke, E.A. Emerson, and A.P. Sisla, ACM Trans. on Programming Languages and Systems 8(2), pp. 244–263, 1986].


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