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HCVS 2024 : 11th Workshop on Horn Clauses for Verification and Synthesis


When Apr 7, 2024 - Apr 7, 2024
Where Luxembourg
Submission Deadline Feb 18, 2024

Call For Papers

11th Workshop on Horn Clauses for Verification and Synthesis (HCVS)

Co-located with ETAPS 2024

Call For Papers

7 April 2024 - Luxembourg

Important dates:

- Paper submission deadline: 18 February 2024
- Paper notification: beginning of March 2024
- Workshop: 7 April 2024

Many Program Verification and Synthesis problems of interest can be modeled
directly using Horn clauses and many recent advances in the CLP and CAV
communities have centered around efficiently solving problems presented as Horn

This series of workshops aims to bring together researchers working in the two
communities of Constraint/Logic Programming (e.g., ICLP and CP), Program
Verification (e.g., CAV, TACAS, and VMCAI), and Automated Deduction (e.g.,
CADE, IJCAR), on the topic of Horn clause based analysis, verification, and

Horn clauses for verification and synthesis have been advocated by these
communities in different times and from different perspectives and HCVS is
organized to stimulate interaction and a fruitful exchange and integration of

The workshop follows previous meetings: HCVS 2023 in Paris (ETAPS 2023), France
(ETAPS 2023), HCVS 2022 in Munich, Germany (ETAPS 2022), HCVS
2021, online (ETAPS 2021), HCVS 2020, online (ETAPS 2020), HCVS
2019 in Prague, Czech Republic (ETAPS 2019), HCVS 2018 in
Oxford, UK (CAV, ICLP and IJCAR at FLoC 2018), HCVS 2017 in
Gothenburg, Sweden (CADE 2017), HCVS 2016 in Eindhoven, The
Netherlands (ETAPS 2016), HCVS 2015 in San Francisco, CA, USA (CAV
2015), and HCVS 2014 in Vienna, Austria (VSL).

Topics of interest include, but are not limited to the use of Horn clauses,
constraints, and related formalisms in the following areas:

- Analysis and verification of programs and systems of various kinds (e.g.,
imperative, object-oriented, functional, logic, higher-order, concurrent,
transition systems, petri-nets, smart contracts)
- Program synthesis
- Program testing
- Program transformation
- Constraint solving
- Type systems
- Machine learning and automated reasoning
- CHC encoding of analysis and verification problems
- Resource analysis
- Case studies and tools
- Challenging problems

We solicit regular papers describing theory and implementation of Horn-clause
based analysis and tool descriptions. We also solicit extended abstracts describing
work-in-progress, as well as presentations covering previously published results,
extended abstracts of doctoral theses, and overviews of research projects that are
of interest to the workshop.

At least one author of each accepted paper will be required to attend the workshop
to present the contribution.

CHC Competition:
HCVS 2024 is planning to host the 7th competition on constraint Horn clauses
(CHC-COMP, which will compare state-of-the-art tools for
CHC solving for performance and effectiveness on a set of publicly available benchmarks.

Program Chairs:
Julie Cailler, University of Regensburg, Germany
Daniel Neider, Technical University of Dortmund, Germany

Submission has to be done in one of the following formats:

- Extended abstracts (up to 3 pages in EPTCS format), which describe work in
progress or aim to initiate discussions.

- Presentation-only papers, i.e., papers already submitted or presented at
a conference or another workshop. Such papers can be submitted in any format,
and will not be included in the workshop post-proceedings.

- Regular papers (up to 12 pages plus bibliography in EPTCS
( format), which should present previously unpublished
work (completed or in progress), including descriptions of research, tools, and

- Tool papers (up to 4 pages in EPTCS format), including the papers written by
the CHC-COMP participants, which can outline the theoretical framework, the
architecture, the usage, and experiments of the tool.

All submitted papers will be refereed by the program committee and will be
selected for inclusion in accordance with the referee reports.

If enough regular papers are accepted, both regular papers and extended
abstracts will be published electronically. The publication of a paper is not intended
to preclude later publication. Full versions of extended abstracts, or substantial
revisions, may later be published elsewhere.

Papers must be submitted through the EasyChair system using the web page:

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