Volume

Dagstuhl Seminar Proceedings, Volume 9411

Publication Details

  • published at: 2010-03-09
  • Publisher: Schloss Dagstuhl – Leibniz-Zentrum für Informatik

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Document
DOI: 10.4230/DagSemProc.09411.1
09411 Abstracts Collection – Interaction versus Automation: The two Faces of Deduction

Authors: Thomas Ball, Jürgen Giesl, Reiner Hähnle, and Tobias Nipkow

Abstract
From 04.10. to 09.10.2009, the Dagstuhl Seminar 09411 ``Interaction versus Automation: The two Faces of Deduction'' was held in Schloss Dagstuhl~--~Leibniz Center for Informatics. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.
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Thomas Ball, Jürgen Giesl, Reiner Hähnle, and Tobias Nipkow. 09411 Abstracts Collection – Interaction versus Automation: The two Faces of Deduction. In Interaction versus Automation: The two Faces of Deduction. Dagstuhl Seminar Proceedings, Volume 9411, pp. 1-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)

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@InProceedings{ball_et_al:DagSemProc.09411.1,
  author =	{Ball, Thomas and Giesl, J\"{u}rgen and H\"{a}hnle, Reiner and Nipkow, Tobias},
  title =	{{09411 Abstracts Collection – Interaction versus Automation: The two Faces of Deduction}},
  booktitle =	{Interaction versus Automation: The two Faces of Deduction},
  pages =	{1--18},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9411},
  editor =	{Thomas Ball and J\"{u}rgen Giesl and Reiner H\"{a}hnle and Tobias Nipkow},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09411.1},
  URN =		{urn:nbn:de:0030-drops-25032},
  doi =		{10.4230/DagSemProc.09411.1},
  annote =	{Keywords: Formal Logic, Deduction, Artificial Intelligence}
}
Document
DOI: 10.4230/DagSemProc.09411.2
09411 Executive Summary – Interaction versus Automation: The two Faces of Deductions

Authors: Thomas Ball, Jürgen Giesl, Reiner Hähnle, and Tobias Nipkow

Abstract
This seminar was the ninth in the series of the Dagstuhl "Deduction" seminars held biennially since 1993. Its goal was to bring together the closely related but unnecessarily disjoint communities of researchers working in interactive and automatic program verification.
Cite as

Thomas Ball, Jürgen Giesl, Reiner Hähnle, and Tobias Nipkow. 09411 Executive Summary – Interaction versus Automation: The two Faces of Deductions. In Interaction versus Automation: The two Faces of Deduction. Dagstuhl Seminar Proceedings, Volume 9411, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)

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@InProceedings{ball_et_al:DagSemProc.09411.2,
  author =	{Ball, Thomas and Giesl, J\"{u}rgen and H\"{a}hnle, Reiner and Nipkow, Tobias},
  title =	{{09411 Executive Summary – Interaction versus Automation: The two Faces of Deductions}},
  booktitle =	{Interaction versus Automation: The two Faces of Deduction},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9411},
  editor =	{Thomas Ball and J\"{u}rgen Giesl and Reiner H\"{a}hnle and Tobias Nipkow},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09411.2},
  URN =		{urn:nbn:de:0030-drops-24213},
  doi =		{10.4230/DagSemProc.09411.2},
  annote =	{Keywords: Formal Logic, Deduction, Artificial Intelligence}
}
Document
DOI: 10.4230/DagSemProc.09411.3
Automated reasoning in extensions of theories of constructors with recursively defined functions and homomorphisms

Authors: Viorica Sofronie-Stokkermans

Abstract
We study possibilities of reasoning about extensions of base theories with functions which satisfy certain recursion and homomorphism properties. Our focus is on emphasizing possibilities of hierarchical and modular reasoning in such extensions and combinations thereof. \begin{itemize} item[(1)] We show that the theory of absolutely free constructors is local, and locality is preserved also in the presence of selectors. These results are consistent with existing decision procedures for this theory (e.g. by Oppen). item[(2)] We show that, under certain assumptions, extensions of the theory of absolutely free constructors with functions satisfying a certain type of recursion axioms satisfy locality properties, and show that for functions with values in an ordered domain we can combine recursive definitions with boundedness axioms without sacrificing locality. We also address the problem of only considering models whose data part is the {em initial} term algebra of such theories. item[(3)] We analyze conditions which ensure that similar results can be obtained if we relax some assumptions about the absolute freeness of the underlying theory of data types, and illustrate the ideas on an example from cryptography. end{itemize} The locality results we establish allow us to reduce the task of reasoning about the class of recursive functions we consider to reasoning in the underlying theory of data structures (possibly combined with the theories associated with the co-domains of the recursive functions). As a by-product, the methods we use provide a possibility of presenting in a different light (and in a different form) locality phenomena studied in cryp-to-gra-phy; we believe that they will allow to better separate rewriting from proving, and thus to give simpler proofs.
Cite as

Viorica Sofronie-Stokkermans. Automated reasoning in extensions of theories of constructors with recursively defined functions and homomorphisms. In Interaction versus Automation: The two Faces of Deduction. Dagstuhl Seminar Proceedings, Volume 9411, pp. 1-33, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)

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@InProceedings{sofroniestokkermans:DagSemProc.09411.3,
  author =	{Sofronie-Stokkermans, Viorica},
  title =	{{Automated reasoning in extensions of theories of constructors with recursively defined functions and homomorphisms}},
  booktitle =	{Interaction versus Automation: The two Faces of Deduction},
  pages =	{1--33},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9411},
  editor =	{Thomas Ball and J\"{u}rgen Giesl and Reiner H\"{a}hnle and Tobias Nipkow},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09411.3},
  URN =		{urn:nbn:de:0030-drops-24241},
  doi =		{10.4230/DagSemProc.09411.3},
  annote =	{Keywords: Decision procedures, recursive datatypes, recursive functions, homomorphisms, verification, cryptography}
}
Document
DOI: 10.4230/DagSemProc.09411.4
Inductive Theorem Proving meets Dependency Pairs

Authors: Stephan Swiderski, Michael Parting, Jürgen Giesl, Carsten Fuhs, and Peter Schneider-Kamp

Abstract
Current techniques and tools for automated termination analysis of term rewrite systems (TRSs) are already very powerful. However, they fail for algorithms whose termination is essentially due to an inductive argument. Therefore, we show how to couple the dependency pair method for TRS termination with inductive theorem proving. As confirmed by the implementation of our new approach in the tool AProVE, now TRS termination techniques are also successful on this important class of algorithms.
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Stephan Swiderski, Michael Parting, Jürgen Giesl, Carsten Fuhs, and Peter Schneider-Kamp. Inductive Theorem Proving meets Dependency Pairs. In Interaction versus Automation: The two Faces of Deduction. Dagstuhl Seminar Proceedings, Volume 9411, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)

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@InProceedings{swiderski_et_al:DagSemProc.09411.4,
  author =	{Swiderski, Stephan and Parting, Michael and Giesl, J\"{u}rgen and Fuhs, Carsten and Schneider-Kamp, Peter},
  title =	{{Inductive Theorem Proving meets Dependency Pairs}},
  booktitle =	{Interaction versus Automation: The two Faces of Deduction},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9411},
  editor =	{Thomas Ball and J\"{u}rgen Giesl and Reiner H\"{a}hnle and Tobias Nipkow},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09411.4},
  URN =		{urn:nbn:de:0030-drops-24220},
  doi =		{10.4230/DagSemProc.09411.4},
  annote =	{Keywords: Termination, Term Rewriting, Dependency Pairs, Inductive Theorem Proving}
}
Document
DOI: 10.4230/DagSemProc.09411.5
Termination of Integer Term Rewriting

Authors: Carsten Fuhs, Jürgen Giesl, Martin Plücker, Peter Schneider-Kamp, and Stephan Falke

Abstract
Recently, techniques and tools from term rewriting have been successfully applied to prove termination automatically for different programming languages. The advantage of rewrite techniques is that they are very powerful for algorithms on user-defined data structures. But in contrast to techniques for termination analysis of imperative programs, the drawback of rewrite techniques is that they do not support data structures like integer numbers which are pre-defined in almost all programming languages. To solve this problem, we extend term rewriting by built-in integers and adapt the dependency pair framework to prove termination of integer term rewriting automatically. Our experiments show that this indeed combines the power of rewrite techniques on user-defined data types with a powerful treatment of pre-defined integers.
Cite as

Carsten Fuhs, Jürgen Giesl, Martin Plücker, Peter Schneider-Kamp, and Stephan Falke. Termination of Integer Term Rewriting. In Interaction versus Automation: The two Faces of Deduction. Dagstuhl Seminar Proceedings, Volume 9411, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)

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@InProceedings{fuhs_et_al:DagSemProc.09411.5,
  author =	{Fuhs, Carsten and Giesl, J\"{u}rgen and Pl\"{u}cker, Martin and Schneider-Kamp, Peter and Falke, Stephan},
  title =	{{Termination of Integer Term Rewriting}},
  booktitle =	{Interaction versus Automation: The two Faces of Deduction},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9411},
  editor =	{Thomas Ball and J\"{u}rgen Giesl and Reiner H\"{a}hnle and Tobias Nipkow},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09411.5},
  URN =		{urn:nbn:de:0030-drops-24233},
  doi =		{10.4230/DagSemProc.09411.5},
  annote =	{Keywords: Termination analysis, integers, term rewriting, dependency pairs}
}

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  • Authors
  • B
  • Ball, Thomas
  • F
  • Falke, Stephan
  • Fuhs, Carsten
  • G
  • Giesl, Jürgen
  • H
  • Hähnle, Reiner
  • N
  • Nipkow, Tobias
  • P
  • Parting, Michael
  • Plücker, Martin
  • S
  • Schneider-Kamp, Peter
  • Sofronie-Stokkermans, Viorica
  • Swiderski, Stephan

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