HCVS24 - 11th Workshop on Horn Clauses for Verification and Synthesis

by jcailler, Dec. 20, 2023

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

Co-located with ETAPS 2024

Call For Papers

7 April 2024 - Luxembourg


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 https://chc-comp.github.io/), 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 

(http://www.eptcs.org/) 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: