model checking


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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].
References in periodicals archive ?
Given a finite state system, the symbolic model checking method starts with the construction of the OBDD for the transition relations TR(V, V').
the provider has the following experience with two completed projects in which safety-critical software has been developed in the railway sector: 1.) identification of formalized functional requirements 2.) formal verification with the method model checking with the simulink design verifier 3.) creation Evidence and documents supporting the approval by the licensing and supervisory authorities Opening date : 26 Aug 2019
Model checking is a formal method used for the verification of finite-state systems.
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Then, using model checking technique for timed automata, the verification could be done using reachability analysis.
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Besides the satisfiability problem, model checking (MC) is another important computational problem.
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Model Checking is vital to safeguard the manufacturability & quality of products.

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