A Hoare Calculus for Graph Programs

Christopher M. Poskitt,D. Plump

Published 2010 in International Conference on Graph Transformation

ABSTRACT

We present Hoare-style axiom schemata and inference rules for verifying the partial correctness of programs in the graph programming language GP. The pre- and postconditions of this calculus are the nested conditions of Habel, Pennemann and Rensink, extended with expressions for labels in order to deal with GP's conditional rule schemata and infinite label alphabet. We show that the proof rules are sound with respect to GP's operational semantics.

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