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Correctness and Completeness of Logic Programs
Linköping University, Department of Computer and Information Science, Software and Systems. Linköping University, Faculty of Science & Engineering. Institute of Computer Science, Polish Academy of Sciences, Warzawa, Poland.ORCID iD: 0000-0002-4700-7272
2016 (English)In: ACM Transactions on Computational Logic, ISSN 1529-3785, E-ISSN 1557-945X, Vol. 17, no 3, 18Article in journal (Refereed) Published
Abstract [en]

We discuss proving correctness and completeness of definite clause logic programs.  We propose a method for proving completeness, while for proving correctness we employ a method which should be well known but is often neglected.  Also, we show how to prove completeness and correctness in the presence of SLD-tree pruning, and point out that approximate specifications simplify specifications and proofs.

We compare the proof methods to declarative diagnosis (algorithmic debugging), showing that approximate specifications eliminate a major drawback of the latter.  We argue that our proof methods reflect natural declarative thinking about programs, and that they can be used, formally or informally, in every-day programming.

Place, publisher, year, edition, pages
ACM Special Interest Group on Computer Science Education, 2016. Vol. 17, no 3, 18
Keyword [en]
logic programming, declarative programming, program completeness, program correctness, specifications, declarative diagnosis/algorithmic debugging
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:liu:diva-130237DOI: 10.1145/2898434ISI: 000380019200004OAI: oai:DiVA.org:liu-130237DiVA: diva2:949760
Available from: 2016-07-23 Created: 2016-07-23 Last updated: 2016-09-19Bibliographically approved

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