3 Search Results for "Bruni, Roberto"

Document
Invited Talk
DOI: 10.4230/LIPIcs.CALCO.2023.2
Local Completeness for Program Correctness and Incorrectness (Invited Talk)

Authors: Roberto Bruni

Published in: LIPIcs, Volume 270, 10th Conference on Algebra and Coalgebra in Computer Science (CALCO 2023)

Abstract
Program correctness techniques aim to prove the absence of bugs, but can yield false alarms because they tend to over-approximate program semantics. Vice versa, program incorrectness methods are aimed to detect true bugs, without false alarms, but cannot be used to prove correctness, because they under-approximate program semantics. In this invited talk we will overview our ongoing research on the use of the abstract interpretation framework to combine under- and over-approximation in the same analysis and distill a logic for program correctness and incorrectness.
Cite as

Roberto Bruni. Local Completeness for Program Correctness and Incorrectness (Invited Talk). In 10th Conference on Algebra and Coalgebra in Computer Science (CALCO 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 270, pp. 2:1-2:2, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2023)

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@InProceedings{bruni:LIPIcs.CALCO.2023.2,
  author =	{Bruni, Roberto},
  title =	{{Local Completeness for Program Correctness and Incorrectness}},
  booktitle =	{10th Conference on Algebra and Coalgebra in Computer Science (CALCO 2023)},
  pages =	{2:1--2:2},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-287-7},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{270},
  editor =	{Baldan, Paolo and de Paiva, Valeria},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CALCO.2023.2},
  URN =		{urn:nbn:de:0030-drops-187993},
  doi =		{10.4230/LIPIcs.CALCO.2023.2},
  annote =	{Keywords: Program analysis, program verification, Hoare logic, incorrectness logic, abstract interpretation, local completeness}
}
Document
DOI: 10.4230/LIPIcs.FSCD.2020.10
Conditional Bisimilarity for Reactive Systems

Authors: Mathias Hülsbusch, Barbara König, Sebastian Küpper, and Lara Stoltenow

Published in: LIPIcs, Volume 167, 5th International Conference on Formal Structures for Computation and Deduction (FSCD 2020)

Abstract
Reactive systems à la Leifer and Milner, an abstract categorical framework for rewriting, provide a suitable framework for deriving bisimulation congruences. This is done by synthesizing interactions with the environment in order to obtain a compositional semantics. We enrich the notion of reactive systems by conditions on two levels: first, as in earlier work, we consider rules enriched with application conditions and second, we investigate the notion of conditional bisimilarity. Conditional bisimilarity allows us to say that two system states are bisimilar provided that the environment satisfies a given condition. We present several equivalent definitions of conditional bisimilarity, including one that is useful for concrete proofs and that employs an up-to-context technique, and we compare with related behavioural equivalences. We instantiate reactive systems in order to obtain DPO graph rewriting and consider a case study in this setting.
Cite as

Mathias Hülsbusch, Barbara König, Sebastian Küpper, and Lara Stoltenow. Conditional Bisimilarity for Reactive Systems. In 5th International Conference on Formal Structures for Computation and Deduction (FSCD 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 167, pp. 10:1-10:19, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2020)

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@InProceedings{hulsbusch_et_al:LIPIcs.FSCD.2020.10,
  author =	{H\"{u}lsbusch, Mathias and K\"{o}nig, Barbara and K\"{u}pper, Sebastian and Stoltenow, Lara},
  title =	{{Conditional Bisimilarity for Reactive Systems}},
  booktitle =	{5th International Conference on Formal Structures for Computation and Deduction (FSCD 2020)},
  pages =	{10:1--10:19},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-155-9},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{167},
  editor =	{Ariola, Zena M.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2020.10},
  URN =		{urn:nbn:de:0030-drops-123322},
  doi =		{10.4230/LIPIcs.FSCD.2020.10},
  annote =	{Keywords: conditional bisimilarity, reactive systems, up-to context, graph transformation}
}
Document
DOI: 10.4230/DagSemProc.04241.4
Summary 3: On Graph(ic) Encodings

Authors: Roberto Bruni and Ivan Lanese

Published in: Dagstuhl Seminar Proceedings, Volume 4241, Graph Transformations and Process Algebras for Modeling Distributed and Mobile Systems (2005)

Abstract
This paper is an informal summary of different encoding techniques from process calculi and distributed formalisms to graphic frameworks. The survey includes the use of solo diagrams, term graphs, synchronized hyperedge replacement systems, bigraphs, tile models and interactive systems, all presented at the Dagstuhl Seminar 04241. The common theme of all techniques recalled here is having a graphic presentation that, at the same time, gives both an intuitive visual rendering (of processes, states, etc.) and a rigorous mathematical framework.
Cite as

Roberto Bruni and Ivan Lanese. Summary 3: On Graph(ic) Encodings. In Graph Transformations and Process Algebras for Modeling Distributed and Mobile Systems. Dagstuhl Seminar Proceedings, Volume 4241, pp. 1-15, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2005)

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@InProceedings{bruni_et_al:DagSemProc.04241.4,
  author =	{Bruni, Roberto and Lanese, Ivan},
  title =	{{Summary 3: On Graph(ic) Encodings}},
  booktitle =	{Graph Transformations and Process Algebras for Modeling Distributed and Mobile Systems},
  pages =	{1--15},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2005},
  volume =	{4241},
  editor =	{Barbara K\"{o}nig and Ugo Montanari and Philippa Gardner},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.04241.4},
  URN =		{urn:nbn:de:0030-drops-303},
  doi =		{10.4230/DagSemProc.04241.4},
  annote =	{Keywords: graph transformation , process calculi , encodings}
}
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