Eternity Variables to Simulate Specifications
نویسنده
چکیده
Simulation of specifications is introduced as a unification and generalization of refinement mappings, history variables, forward simulations, prophecy variables, and backward simulations. Eternity variables are introduced as a more powerful alternative for prophecy variables and backward simulations. This formalism is semantically complete: every simulation is a composition of a forward simulation, an extension with eternity variables, and a refinement mapping. This result does not need finite invisible nondeterminism and machine closure as in the Abadi-Lamport Theorem. Internal continuity is replaced by preservation of quiescence.
منابع مشابه
Universal extensions to simulate specifications
A previous paper introduced eternity variables as an alternative to the prophecy variables of Abadi and Lamport and proved the formalism to be semantically complete: every simulation F : K −. L that preserves quiescence contains a composition of a history extension, an extension with eternity variables, and a refinement mapping. This result is strengthened here in three ways. Firstly, the assum...
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