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DOI: 10.4230/LIPIcs.FSCD.2017.1
URN: urn:nbn:de:0030-drops-77429
URL: http://drops.dagstuhl.de/opus/volltexte/2017/7742/
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Gaboardi, Marco

Type Systems for the Relational Verification of Higher Order Programs (Invited Talk)

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LIPIcs-FSCD-2017-1.pdf (0.2 MB)


Abstract

Relational program verification is a variant of program verification where one focuses on guaranteeing properties about the executions of two programs, and as a special case about two executions of a single program on different inputs. Relational verification becomes particularly interesting when non-functional aspects of a computation, like probabilities or resource cost, are considered. Several approached to relational program verification have been developed, from relational program logics to relational abstract interpretation. In this talk, I will introduce two approaches to relational program verification for higher-order computations based on the use of type systems. The first approach consists in developing powerful type system where a rich language of assertions can be used to express complex relations between two programs. The second approach consists in developing more restrictive type systems enriched with effects expressing in a lightweight way relations between different runs of the same program. I will discuss the pros and cons of these two approaches on a concrete example: relational cost analysis, which aims at giving a bound on the difference in cost of running two programs, and as a special case the difference in cost of two executions of a single program on different inputs.

BibTeX - Entry

@InProceedings{gaboardi:LIPIcs:2017:7742,
  author =	{Marco Gaboardi},
  title =	{{Type Systems for the Relational Verification of Higher Order Programs (Invited Talk)}},
  booktitle =	{2nd International Conference on Formal Structures for Computation and Deduction (FSCD 2017)},
  pages =	{1:1--1:1},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-047-7},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{84},
  editor =	{Dale Miller},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2017/7742},
  URN =		{urn:nbn:de:0030-drops-77429},
  doi =		{10.4230/LIPIcs.FSCD.2017.1},
  annote =	{Keywords: Relational verification, refinement types, type and effect systems, complexity analysis}
}

Keywords: Relational verification, refinement types, type and effect systems, complexity analysis
Seminar: 2nd International Conference on Formal Structures for Computation and Deduction (FSCD 2017)
Issue Date: 2017
Date of publication: 21.08.2017


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