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Document
DOI: 10.4230/DARTS.3.2.15
Strong Logic for Weak Memory: Reasoning About Release-Acquire Consistency in Iris (Artifact)

Authors: Jan-Oliver Kaiser, Hoang-Hai Dang, Derek Dreyer, Ori Lahav, and Viktor Vafeiadis

Published in: DARTS, Volume 3, Issue 2, Special Issue of the 31st European Conference on Object-Oriented Programming (ECOOP 2017)

Abstract
This artifact provides the soundness proofs for the encodings in Iris the RSL and GPS logics, as well as the verification for all standard examples known to be verifiable in those logics. All of these proofs are formalized in Coq, which is the main content of this artifact. The formalization is provided in a virtual machine for the convenience of testing, but can also be built from source.
Cite as

Jan-Oliver Kaiser, Hoang-Hai Dang, Derek Dreyer, Ori Lahav, and Viktor Vafeiadis. Strong Logic for Weak Memory: Reasoning About Release-Acquire Consistency in Iris (Artifact). In Special Issue of the 31st European Conference on Object-Oriented Programming (ECOOP 2017). Dagstuhl Artifacts Series (DARTS), Volume 3, Issue 2, pp. 15:1-15:2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)

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@Article{kaiser_et_al:DARTS.3.2.15,
  author =	{Kaiser, Jan-Oliver and Dang, Hoang-Hai and Dreyer, Derek and Lahav, Ori and Vafeiadis, Viktor},
  title =	{{Strong Logic for Weak Memory: Reasoning About Release-Acquire Consistency in Iris (Artifact)}},
  pages =	{15:1--15:2},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2017},
  volume =	{3},
  number =	{2},
  editor =	{Kaiser, Jan-Oliver and Dang, Hoang-Hai and Dreyer, Derek and Lahav, Ori and Vafeiadis, Viktor},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.3.2.15},
  URN =		{urn:nbn:de:0030-drops-72966},
  doi =		{10.4230/DARTS.3.2.15},
  annote =	{Keywords: weak memory models, release-acquire, concurrency, separation logic}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2017.17
Strong Logic for Weak Memory: Reasoning About Release-Acquire Consistency in Iris

Authors: Jan-Oliver Kaiser, Hoang-Hai Dang, Derek Dreyer, Ori Lahav, and Viktor Vafeiadis

Published in: LIPIcs, Volume 74, 31st European Conference on Object-Oriented Programming (ECOOP 2017)

Abstract
The field of concurrent separation logics (CSLs) has recently undergone two exciting developments: (1) the Iris framework for encoding and unifying advanced higher-order CSLs and formalizing them in Coq, and (2) the adaptation of CSLs to account for weak memory models, notably C11's release-acquire (RA) consistency. Unfortunately, these developments are seemingly incompatible, since Iris only applies to languages with an operational interleaving semantics, while C11 is defined by a declarative (axiomatic) semantics. In this paper, we show that, on the contrary, it is not only feasible but useful to marry these developments together. Our first step is to provide a novel operational characterization of RA+NA, the fragment of C11 containing RA accesses and "non-atomic" (normal data) accesses. Instantiating Iris with this semantics, we then derive higher-order variants of two prominent RA+NA logics, GPS and RSL. Finally, we deploy these derived logics in order to perform the first mechanical verifications (in Coq) of several interesting case studies of RA+NA programming. In a nutshell, we provide the first foundationally verified framework for proving programs correct under C11's weak-memory semantics.
Cite as

Jan-Oliver Kaiser, Hoang-Hai Dang, Derek Dreyer, Ori Lahav, and Viktor Vafeiadis. Strong Logic for Weak Memory: Reasoning About Release-Acquire Consistency in Iris. In 31st European Conference on Object-Oriented Programming (ECOOP 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 74, pp. 17:1-17:29, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)

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@InProceedings{kaiser_et_al:LIPIcs.ECOOP.2017.17,
  author =	{Kaiser, Jan-Oliver and Dang, Hoang-Hai and Dreyer, Derek and Lahav, Ori and Vafeiadis, Viktor},
  title =	{{Strong Logic for Weak Memory: Reasoning About Release-Acquire Consistency in Iris}},
  booktitle =	{31st European Conference on Object-Oriented Programming (ECOOP 2017)},
  pages =	{17:1--17:29},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-035-4},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{74},
  editor =	{M\"{u}ller, Peter},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2017.17},
  URN =		{urn:nbn:de:0030-drops-72753},
  doi =		{10.4230/LIPIcs.ECOOP.2017.17},
  annote =	{Keywords: Weak memory models, release-acquire, concurrency, separation logic}
}
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