Termination Competition

Annual International Termination Competition

During the 90's a number of new, powerful termination methods was developed. Thus, at the the beginning of the millennium many research groups started to develop tools for fully-automated termination analysis.

After a tool demonstration at the 2003 Workshop on Termination in Valencia, the community decided to install an annual termination competition to spur the development of tools and new termination techniques.

From 2004 till 2007, the competition organizer was Claude Marché, Paris. From 2008 to 2013 the competition was run by René Thiemann, Innsbruck. Since 2014, the competition organizer is Johannes Waldmann. Jobs are run on the Star Exec platform at U Iowa. Results are aggregated and displayed at HTWK Leipzig.

Upcoming Competitions

Termination Competition 2017

Competition Categories

Currently, the competition features the following categories:

• termination of string and term rewriting
• termination of logic programs
• certified termination of string and term rewriting (since 2007)
• termination of functional programs (since 2007)
• complexity of rewrite systems (since 2008)
• termination of Java Bytecode programs (since 2009)
• termination of higher order rewriting (since 2010)
• termination of C programs (since 2014)
• termination of integer transition systems (since 2014)
• integer term rewriting (since 2014)
• termination of C integer programs
• termination of cycle rewriting

Discussion is open and primarily happens on the termtools mailing list. Decisions will be made by votes among the Termination Competition Steering Committee, with current members

• Jürgen Giesl, RWTH Aachen
• Albert Rubio (Chair), UPC Barcelona
• Christian Sternagel, U. Innsbruck
• Johannes Waldmann, HTWK Leipzig
• Akihisa Yamada, NII Tokyo

Termination Problems Data Base

The Termination Problems Data Base collects all the problems used in the competitions.

We welcome problem submissions from non-participants.

History of Termination Competitions

The following competitions have taken place:

• Termination Competition 2017 affiliated with FSCD, Results of Competition, Results of demonstration.

• Termination Competition 2016 affiliated with WST (Workshop on Termination), Results of Competition. Presentation at WST

• Termination Competition 2015, Results of Competition, Description paper at CADE-25 Report

• Termination Competition 2014, Results of Competition, Results of Demonstration

• Termination Competition 2013, Results, Report

• Termination Competition 2012, Results, Report

• Termination Competition 2011, Results, Report

• Termination Competition 2010, Results

• Termination Competition 2009 Results, Announcement

• Termination Competition 2008, Results, Report
• Termination Competition 2007, Report
• Termination Competition 2006, Report
• Termination Competition 2005, Report
• Termination Competition 2004, Report

Static Backups of Results

For many previous competitions, static backups of the results are availble here.