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An object-oriented real time systems modeling and verification methodology

An object-oriented real time systems conceptual modeling approach is described. In this approach, each object is specified by an object type, consisting of supertypes (inheritance), component types (aggregation), attributes, operations, static constraints, and temporal constraints. That is, an object type specification defines a theory of a type of objects. An object-oriented real time conceptual model using the object types can be translated into an augmented Petri net with timing and temporal constraints. A reachability tree of permissible system states is generated for the augmented Petri nets for verifying whether the conceptual model satisfies desired temporal constraints.