Modular Termination for Second-Order Computation Rules and Application to Algebraic Effect Handlers

12/07/2019

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by   Makoto Hamana, et al.

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We present a new modular proof method of termination for second-order computation, and report its implementation SOL. The proof method is useful for proving termination of higher-order foundational calculi. To establish the method, we use a variation of semantic labelling translation and Blanqui's General Schema: a syntactic criterion of strong normalisation. As an application, we apply this method to show termination of a variant of call-by-push-value calculus with algebraic effects and effect handlers. We also show that our tool SOLl is effective to solve higher-order termination problems.