VerifyThis Verification Competition 2023


Competition to be held at ETAPS 2023


Grant Registration Deadline: April 7th, 2023
Registration deadline: April 14th, 2023
Competition: April 22nd and 23rd, 2023


VerifyThis 2023 is a program verification competition taking place as part of 
the European Joint Conferences on Theory and Practice of Software (ETAPS 2023) 
on 22 and 23 April 2023. It is the 11th event in the VerifyThis competition 
series. Information on previous events and participants can be found at:

The aims of the competition are:

* to bring together those interested in formal verification, and to provide an 
engaging, hands-on, and fun opportunity for discussion, and

* to evaluate the usability of logic-based program verification tools in a 
controlled experiment that could be easily repeated by others.

The competition will offer a number of challenges presented in natural language 
and pseudo code. Participants have to formalize the requirements, implement a 
solution, and formally verify the implementation for adherence to the 

There are no restrictions on the programming language and verification 
technology used. The correctness properties posed in problems will have the 
input-output behaviour of programs in focus. Solutions will be judged for 
correctness, completeness and elegance.


Participation is open for anybody interested. Teams of up to two people are 
allowed. VerifyThis will be held at ETAPS 2023 in Paris, each challenge will be 
given 90 minutes. More details and a full program will be announced on the 

We particularly encourage participation of:

- people from under-represented communities
- student teams (this includes PhD students)  
- non-developer teams using a tool someone else developed 
- several teams using the same tool


The competition has funds for a limited number of registration grants, 
sponsored by Amazon AWS. Grants will cover the registration costs for ETAPS. To 
apply for a grant, fill out the relevant section of the registration form and, 
if you are a student, have your supervisor send a brief letter of support to 
the following address:


Thanks to our sponsors, VerifyThis typically offer team prizes such as the best 
overall team, the most distinguished tool features and the best student team. 
VerifyThis 2023 prizes are sponsored by Amazon AWS.


Please register by filling out the following form:

Grant Deadline: April 7th, 2023
Deadline: April 14th, 2023


Stephen Siegel, University of Delaware, United States
Xavier Denis, Université Paris-Saclay, France


Marieke Huisman, University of Twente, the Netherlands
Rosemary Monahan, Maynooth University, Ireland
Peter Müller, ETH Zurich, Switzerland
Mattias Ulbrich, Karlsruhe Institute of Technology, Germany

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