A Unified Framework for  Verification Techniques for Object Invariants

Drossopoulou, Sophia; Francalanza, Adrian; Müller, P.; Summers, Alexander J.

doi:10.4230/DagSemProc.08061.3

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A Unified Framework for Verification Techniques for Object Invariants

Authors Sophia Drossopoulou, Adrian Francalanza, P. Müller, Alexander J. Summers

Part of: Volume: Dagstuhl Seminar Proceedings, Volume 8061
Part of: Series: Dagstuhl Seminar Proceedings (DagSemProc)
License: Creative Commons Attribution 4.0 International license
Publication Date: 2008-04-15

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Document Identifiers

DOI: 10.4230/DagSemProc.08061.3
URN: urn:nbn:de:0030-drops-14278

Subject Classification

Keywords

Object invariants
visible states semantics
verification
sound

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Abstract

Object invariants define the consistency of objects. They
have subtle semantics, mainly because of call-backs, multi-object invariants,
and subclassing.
Several verification techniques for object invariants have been proposed.
It is difficult to compare these techniques, and to ascertain their soundness,
because of their differences in restrictions on programs and invariants,
in the use of advanced type systems (e.g., ownership types), in the
meaning of invariants, and in proof obligations.
We develop a unified framework for such techniques. We distil seven parameters
that characterise a verification technique, and identify sufficient
conditions on these parameters which guarantee soundness. We instantiate
our framework with three verification techniques from the literature,
and use it to assess soundness and compare expressiveness.

Cite As Get BibTex

Sophia Drossopoulou, Adrian Francalanza, P. Müller, and Alexander J. Summers. A Unified Framework for Verification Techniques for Object Invariants. In Types, Logics and Semantics for State. Dagstuhl Seminar Proceedings, Volume 8061, pp. 1-25, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2008) https://doi.org/10.4230/DagSemProc.08061.3

Author Details

Sophia Drossopoulou

Adrian Francalanza

P. Müller

Alexander J. Summers

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