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A Theory of Termination via Indirection

Authors: Robert Dockins and Aquinas Hobor

Published in: Dagstuhl Seminar Proceedings, Volume 10351, Modelling, Controlling and Reasoning About State (2010)


Abstract
Step-indexed models provide approximations to a class of domain equations and can prove type safety, partial correctness, and program equivalence; however, a common misconception is that they are inapplicable to liveness problems. We disprove this by applying step-indexing to develop the first Hoare logic of total correctness for a language with function pointers and semantic assertions. In fact, from a liveness perspective, our logic is stronger: we verify explicit time resource bounds. We apply our logic to examples containing nontrivial "higher-order" uses of function pointers and we prove soundness with respect to a standard operational semantics. Our core technique is very compact and may be applicable to other liveness problems. Our results are machine checked in Coq.

Cite as

Robert Dockins and Aquinas Hobor. A Theory of Termination via Indirection. In Modelling, Controlling and Reasoning About State. Dagstuhl Seminar Proceedings, Volume 10351, pp. 1-12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)


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@InProceedings{dockins_et_al:DagSemProc.10351.3,
  author =	{Dockins, Robert and Hobor, Aquinas},
  title =	{{A Theory of Termination via Indirection}},
  booktitle =	{Modelling, Controlling and Reasoning About State},
  pages =	{1--12},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{10351},
  editor =	{Amal Ahmed and Nick Benton and Lars Birkedal and Martin Hofmann},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.10351.3},
  URN =		{urn:nbn:de:0030-drops-28050},
  doi =		{10.4230/DagSemProc.10351.3},
  annote =	{Keywords: Step-indexed Models, Termination}
}
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