Publications

On interpolation in automated theorem proving  (2015)

Authors:
Maria Paola Bonacina; Moa Johansson
Title:
On interpolation in automated theorem proving
Year:
2015
Type of item:
Articolo in Rivista
Tipologia ANVUR:
Articolo su rivista
Nations of authors:
SVEZIA; ITALIA
Language:
Inglese
Format:
A Stampa
Referee:
Name of journal:
Journal of Automated Reasoning
ISSN of journal:
0168-7433
N° Volume:
54
Number or Folder:
1
:
Kluwer
Page numbers:
69-97
Keyword:
Interpolation Systems, Resolution, Superposition
Short description of contents:
Given two inconsistent formulae, a (reverse) interpolant is a formula implied by one, inconsistent with the other, and only containing symbols they share. Interpolation finds application in program analysis, verification, and synthesis, for example, towards invariant generation. An interpolation system takes a refutation of the inconsistent formulae and extracts an interpolant by building it inductively from partial interpolants. Known interpolation systems for ground proofs use colors to track symbols. We show by examples that the color-based approach cannot handle non-ground refutations by resolution and paramodulation/superposition. We present a two-stage approach that works by tracking literals, computes a provisional interpolant, which may contain non-shared symbols, and applies lifting to replace non-shared constants by quantified variables. We obtain an interpolation system for non-ground refutations, and we prove that it is complete, if the only non-shared symbols in provisional interpolants are constants.
Note:
Published online on October 19, 2014
Web page:
http://profs.sci.univr.it/~bonacina/interpolation.html
Product ID:
83332
Handle IRIS:
11562/801564
Deposited On:
June 5, 2016
Last Modified:
November 2, 2016
Bibliographic citation:
Maria Paola Bonacina; Moa Johansson, On interpolation in automated theorem proving «Journal of Automated Reasoning» , vol. 54 , n. 12015pp. 69-97

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