We first introduce the notion of logically decorated rewriting systems where the left-hand sides are endowed with logical formulas which help to express positive as well as negative application conditions, in addition to classical pattern-matching. These systems are defined using graph structures and an extension of combinatory propositional dynamic logic, CPDL, with restricted universal programs, called C2PDL. In a second step, we tackle the problem of proving the correctness of logically decorated graph rewriting systems by using a Hoare-like calculus. We introduce a notion of specification defined as a tuple (Pre, Post, R, S) with Pre and Post being formulas of C2PDL, R a rewriting system and S a rewriting strategy. We provide a sound calculus which infers proof obligations of the considered specifications and establish the decidability of the verification problem of the (partial) correctness of the considered specifications.
@InProceedings{brenas_et_al:LIPIcs.FSCD.2016.14, author = {Brenas, Jon Ha\"{e}l and Echahed, Rachid and Strecker, Martin}, title = {{Proving Correctness of Logically Decorated Graph Rewriting Systems}}, booktitle = {1st International Conference on Formal Structures for Computation and Deduction (FSCD 2016)}, pages = {14:1--14:15}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-010-1}, ISSN = {1868-8969}, year = {2016}, volume = {52}, editor = {Kesner, Delia and Pientka, Brigitte}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2016.14}, URN = {urn:nbn:de:0030-drops-59778}, doi = {10.4230/LIPIcs.FSCD.2016.14}, annote = {Keywords: Graph Rewriting, Hoare Logic,Combinatory PDL, Rewrite Strategies, Program Verification} }
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