model checking
To algorithmically check whether a program (the model) satisfies a specification. The model is usually expressed as a ref="module.php?name=Lexikon&file=search&eid=1&query=directed graph">directed graph consisting of ref="module.php?name=Lexikon&file=search&eid=1&query=nodes">nodes (or ref="module.php?name=Lexikon&file=search&eid=1&query=vertices">vertices) and ref="module.php?name=Lexikon&file=search&eid=1&query=edges">edges. A set of ref="module.php?name=Lexikon&file=search&eid=1&query=atomic propositions">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]. (1997-06-26) In addition suitable contents:
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