Confluence Competition

CoCo 2017


July 25, 2017: Final CFP is announced.
Jun 7, 2017: 2nd CFP is announced.
Dec 27, 2016: 1st CFP is announced.
Dec 27, 2016: This page is created.


This site lists relevant information for the 6th Confluence Competition (CoCo 2017). The competition will run live during the 6th International Workshop on Confluence (IWC 2017), to be collocated with the 2nd International Conference on Formal Structures for Computation and Deduction (FSCD 2017) in Oxford, United Kingdom. We invite everyone developing confluence (and related) tools to join CoCo 2017, to share problems and challenges.


The following categories will be run:

For the details (input, problem, etc.) of each category, check category page. The CPF and UN categories are combined categories, and all of their component categories will be run.


request for competition categoriesFebruary 28, 2017
request for demonstration categoriesJune 30, 2017
tool registrationAugust 13, 2017
tool submissionAugust 23, 2017
problem submissionAugust 27, 2017
competitionSeptember 8, 2017


Submissions of new problems are welcome. Submissions are via Cops. Problems submitted after the problem submission deadline will not be considered for the competition.

Execution Platform

CoCo 2017 will run on StarExec, a high-end cross-community competition platform. Details of the specification are to be announced. For each problem a tool will have 60 seconds access to a single node.

Request for Categories

We still solicit demonstration categories for CoCo 2017. See here to send your request.


Tools must be able to run on the designated execution platform. It is encouraged that tools are open source and that binaries of the competition versions of the tools can be archived on the competition website; they shall be used in our web interface in future.


Tool registration will be via EasyChair. Every tool registration should also contain a one page system description. Tool registration must be made electronically through the EasyChair system at: Specify tool name as the title and tool authors as the authors. Please use the following form for the abstract:

Categories to enter: TRS/CTRS/CPF-TRS/CPF-CTRS/HRS/GCR/UNC/UNR/NFP/Demo  (leave appropriate ones)
URL of tool's website:                      (if there is one)
Entrants for CPF-TRS or CPF-CTRS category automatically enter the CPF category, and those for UNC, UNR or NFP category automatically enter the UN category. Please submit one page system description in EasyChair LaTeX class style highlighting the distinctive features of the prover (in a single latex file). Tool submission will be via StarExec. Details for submission on StarExec will be added later.

Organising Committee