https://www.dagstuhl.de/19062

03. – 06. Februar 2019, Dagstuhl Seminar 19062

Bringing CP, SAT and SMT together: Next Challenges in Constraint Solving

Organisatoren

Sébastien Bardin (CEA LIST, FR)
Nikolaj S. Bjorner (Microsoft Research – Redmond, US)
Cristian Cadar (Imperial College London, GB)
Vijay Ganesh (University of Waterloo, CA)

Auskunft zu diesem Dagstuhl Seminar erteilen

Simone Schilke zu administrativen Fragen

Shida Kunz zu wissenschaftlichen Fragen

Motivation

Constraint solving is at the heart of several key technologies, including program analysis, testing, formal methods, compilers, security analysis, optimization, and AI. During the last two decades, constraint solving has been highly successful and transformative: on the one hand, SAT/SMT solvers have seen a significant performance improvement with a concomitant impact on software engineering, formal methods and security; on the other hand, CP solvers have also seen a dramatic performance improvement, with deep impact in AI and optimization.

These successes bring new applications and new challenges, not yet met by current technologies, e.g.:

  • some fundamental constraints still lack efficient reasoning (e.g., floating-point arithmetic);
  • quantifiers are rarely taken into account - especially with model generation;
  • current approaches focus essentially on satisfiability and/or validity, while some applications would benefit from queries such as optimization or model counting.

While each of the SAT, SMT and CP communities has made progress on some aspects of these problems, no approach is able to tackle them all, and their combination is already a challenge. Moreover, while historically strongly connected, the SAT/SMT community and the CP community have had minimal interactions over the recent years.

The aim of this seminar is to reunify the Constraint Solving landscape and contribute at shaping it for the next decade, through identifying the next big challenges together with promising approaches. The seminar will bring together researchers from SAT, SMT and CP along with applications researchers in order to foster cross-fertilization of ideas, deepen interactions and identify the best ways to serve the application fields.

Especially, we expect strong interactions during the seminar around the following points:

  • [CP] advance propagation, domain-dedicated reasoning and (deep) constraint combination;
  • [SAT] branching heuristics, look-ahead, and conflict-clause learning methods;
  • [SMT] theory solvers and well-defined solver combinations;
  • How can we better serve the needs of applications researchers?
  • Finally, an important question is how to leverage machine learning in these contexts. The experience of the SAT community may bring here some answers.

License
  Creative Commons BY 3.0 DE
  Sébastien Bardin, Nikolaj S. Bjorner, Cristian Cadar, and Vijay Ganesh

Related Dagstuhl Seminar

Classification

  • Security / Cryptology
  • Software Engineering
  • Verification / Logic

Keywords

  • Automated Decision Procedures
  • Constraint Programming
  • SAT/SMT

Buchausstellung

Bücher der Teilnehmer 

Buchausstellung im Erdgeschoss der Bibliothek

(nur in der Veranstaltungswoche).

Dokumentation

In der Reihe Dagstuhl Reports werden alle Dagstuhl-Seminare und Dagstuhl-Perspektiven-Workshops dokumentiert. Die Organisatoren stellen zusammen mit dem Collector des Seminars einen Bericht zusammen, der die Beiträge der Autoren zusammenfasst und um eine Zusammenfassung ergänzt.

 

Download Übersichtsflyer (PDF).

Publikationen

Es besteht weiterhin die Möglichkeit, eine umfassende Kollektion begutachteter Arbeiten in der Reihe Dagstuhl Follow-Ups zu publizieren.

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