Confluence Competition

CoCo 2022


26 August 2022   full run completed
3 August 2022   FLoC Olympic Games, slides
2 August 2022   results announced
1 August 2022   live competition, slides
14 July 2022   test run concluded
26 June 2022   participating tools added
18 May 2022   call for tools and problems
17 December 2021   date of CoCo 2022 is fixed
29 November 2021   1st call for new problems
24 November 2021   panel members announced
24 November 2021   web site created


This site lists relevant information for the 11th Confluence Competition. CoCo 2022 will run live during IWC 2022, the 11th International Workshop on Confluence, which is held on August 1, 2022 as part of FLoC.


problem submission 17 June 2022
tool registration   22 June 2022
tool description   29 June 2022
tool submission 12 July 2022
secret problem submission   17 July 2022
competition 1 August 2022


CoCo 2022 will feature a new category on context-sensitive confluence. The complete list of categories for 2022 is available. Requests for further categories have to be made by email to the CoCo SC before April 1, 2022.

Problem Submission

Problems submitted by June 17, 2022 (via the COPS web interface) will be considered for CoCo 2022. In addition, secret problems, which will be selected for the competition, are accepted until July 17, 2022, according to the submission details.

Tool Registration

Tool registration is done through EasyChair. Please enter the tool name in the title field, the tool contributors as authors, and the participating categories (choose from COM, CPF-CTRS, CPF-TRS, CSR, CTRS, GCR, HRS, INF, NFP, SRS, TRS, UNC, UNR) as well as a link to the website of the tool in the abstract field. The strict deadline for tool registration is June 22, 2022.

Tool Description

Tool authors are invited to submit a one-page system description. System descriptions will be included in the proceedings of IWC 2022 and typically highlight the distinctive features of the tool. Please submit a single latex file in EasyChair latex style. The strict deadline for tool description is June 29, 2022.

Tool Submission

CoCo 2022 will run live on StarExec and so tools must be able to run on it. Submission instructions are available. Please contact the CoCo SC in case of installation problems. Tools will have 60 seconds access to a single node of StarExec for each problem. After the submission deadline, tools will be tested on a few sample problems. After the competition, binaries of participating tools will be made accessible to the community via the CoCoWeb platform.


CoCo 2022 is overseen by a panel of knowledgeable experts who are not participating in the competition: