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Documents authored by D'Souza, Deepak

Document
DOI: 10.4230/LIPIcs.FSTTCS.2021.45
On the Expressive Equivalence of TPTL in the Pointwise and Continuous Semantics

Authors: Raveendra Holla, Nabarun Deka, and Deepak D'Souza

Published in: LIPIcs, Volume 213, 41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2021)

Abstract
We consider a first-order logic with linear constraints interpreted in a pointwise and continuous manner over timed words. We show that the two interpretations of this logic coincide in terms of expressiveness, via an effective transformation of sentences from one logic to the other. As a consequence it follows that the pointwise and continuous semantics of the logic TPTL with the since operator also coincide. Along the way we exhibit a useful normal form for sentences in these logics.
Cite as

Raveendra Holla, Nabarun Deka, and Deepak D'Souza. On the Expressive Equivalence of TPTL in the Pointwise and Continuous Semantics. In 41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2021). Leibniz International Proceedings in Informatics (LIPIcs), Volume 213, pp. 45:1-45:21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@InProceedings{holla_et_al:LIPIcs.FSTTCS.2021.45,
  author =	{Holla, Raveendra and Deka, Nabarun and D'Souza, Deepak},
  title =	{{On the Expressive Equivalence of TPTL in the Pointwise and Continuous Semantics}},
  booktitle =	{41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2021)},
  pages =	{45:1--45:21},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-215-0},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{213},
  editor =	{Boja\'{n}czyk, Miko{\l}aj and Chekuri, Chandra},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.FSTTCS.2021.45},
  URN =		{urn:nbn:de:0030-drops-155562},
  doi =		{10.4230/LIPIcs.FSTTCS.2021.45},
  annote =	{Keywords: Real-Time Logics, First-Order Logics}
}
Document
DOI: 10.4230/LIPIcs.FSTTCS.2020.57
Static Race Detection for RTOS Applications

Authors: Rishi Tulsyan, Rekha Pai, and Deepak D'Souza

Published in: LIPIcs, Volume 182, 40th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2020)

Abstract
We present a static analysis technique for detecting data races in Real-Time Operating System (RTOS) applications. These applications are often employed in safety-critical tasks and the presence of races may lead to erroneous behaviour with serious consequences. Analyzing these applications is challenging due to the variety of non-standard synchronization mechanisms they use. We propose a technique based on the notion of an "occurs-in-between" relation between statements. This notion enables us to capture the interplay of various synchronization mechanisms. We use a pre-analysis and a small set of not-occurs-in-between patterns to detect whether two statements may race with each other. Our experimental evaluation shows that the technique is efficient and effective in identifying races with high precision.
Cite as

Rishi Tulsyan, Rekha Pai, and Deepak D'Souza. Static Race Detection for RTOS Applications. In 40th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 182, pp. 57:1-57:20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{tulsyan_et_al:LIPIcs.FSTTCS.2020.57,
  author =	{Tulsyan, Rishi and Pai, Rekha and D'Souza, Deepak},
  title =	{{Static Race Detection for RTOS Applications}},
  booktitle =	{40th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2020)},
  pages =	{57:1--57:20},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-174-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{182},
  editor =	{Saxena, Nitin and Simon, Sunil},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.FSTTCS.2020.57},
  URN =		{urn:nbn:de:0030-drops-132983},
  doi =		{10.4230/LIPIcs.FSTTCS.2020.57},
  annote =	{Keywords: Static analysis, concurrency, data-race detection, RTOS}
}
Document
Complete Volume
DOI: 10.4230/LIPIcs.FSTTCS.2012
LIPIcs, Volume 18, FSTTCS'12, Complete Volume

Authors: Deepak D'Souza, Telikepalli Kavitha, and Jaikumar Radhakrishnan

Published in: LIPIcs, Volume 18, IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2012)

Abstract
LIPIcs, Volume 18, FSTTCS'12, Complete Volume
Cite as

IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2012). Leibniz International Proceedings in Informatics (LIPIcs), Volume 18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2013)

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@Proceedings{dsouza_et_al:LIPIcs.FSTTCS.2012,
  title =	{{LIPIcs, Volume 18, FSTTCS'12, Complete Volume}},
  booktitle =	{IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2012)},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-47-7},
  ISSN =	{1868-8969},
  year =	{2013},
  volume =	{18},
  editor =	{D'Souza, Deepak and Radhakrishnan, Jaikumar and Telikepalli, Kavitha},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.FSTTCS.2012},
  URN =		{urn:nbn:de:0030-drops-41121},
  doi =		{10.4230/LIPIcs.FSTTCS.2012},
  annote =	{Keywords: Software/Program Verification, Models of Computation, Modes of Computation, Complexity Measures and Classes, Nonnumerical Algorithms and Problems Specifying and Verifying and Reasoning about Programs, Mathematical Logic, Formal Languages}
}
Document
Front Matter
DOI: 10.4230/LIPIcs.FSTTCS.2012.i
Frontmatter, Table of Contents, Preface, Conference Organization

Authors: Deepak D'Souza, Jaikumar Radhakrishnan, and Kavitha Telikepalli

Published in: LIPIcs, Volume 18, IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2012)

Abstract
Frontmatter, Table of Contents, Preface, Conference Organization
Cite as

IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2012). Leibniz International Proceedings in Informatics (LIPIcs), Volume 18, pp. i-xiv, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2012)

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@InProceedings{dsouza_et_al:LIPIcs.FSTTCS.2012.i,
  author =	{D'Souza, Deepak and Radhakrishnan, Jaikumar and Telikepalli, Kavitha},
  title =	{{Frontmatter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2012)},
  pages =	{i--xiv},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-47-7},
  ISSN =	{1868-8969},
  year =	{2012},
  volume =	{18},
  editor =	{D'Souza, Deepak and Radhakrishnan, Jaikumar and Telikepalli, Kavitha},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.FSTTCS.2012.i},
  URN =		{urn:nbn:de:0030-drops-38411},
  doi =		{10.4230/LIPIcs.FSTTCS.2012.i},
  annote =	{Keywords: Frontmatter, Table of Contents, Preface, Conference Organization}
}
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