Tyrolean Complexity Tool
A Complexity Analyser for Term Rewrite Systems
TcT is a tool for automatically proving polynomial upper bounds on the derivational complexity and runtime complexity of term rewriting systems. It is developed by members of the Computation with Bounded Resources research group.

TcT features a majority of the known techniques for the automatic characterisation of polynomial complexity of a TRS, see also the list of supported techniques. It is currently the only complexity tool implementing dedicated techniques for all complexity categories of that competition. The predecessor of TcT is still available from here.

News

TcT version 2.0.1 released
2013/08/06

TcT version 2.0.1 has been released. This minor release comes with updated documentation, minor bugfixes, and a more consistent naming of techniques in Tct.Instances.
TcT version 2.0 released
2013/03/19

TcT version 2.0 has been released. Besides bug-fixes and a wealth of minor improvements, notably this release adds to version 1.9:
Web Interface Updated
2013/03/01

Our web interface has been polished, it features new examples, the competition strategy of 2012 and a dedicated strategy for our RaML collection.
Complexity Competition 2012
2013/02/02

TcT participated in all four complexity categories of the complexity competition 2012. TcT won the runtime complexity category. It is the only tool participating in the innermost derivational complexity category, and the only open source tool capable of proving innermost runtime complexity. TcT could signifficantly increase its power for innermost runtime complexity, and was placed closely after AProVE (closed source).
Web Interface
2012/05/10

TcT now features an easy to use web interface.
Resource aware ML
2012/05/10

We have translated the Resource aware ML testbed to term rewrite systems. The resulting set of TRSs can be downloaded from here.
TcT version 1.9 released
2012/01/01

This version presents the last milestone before version 2.0. Besides various bugfixes, most notably following new features are added:

Contact

The main authors are Martin Avanzini, Georg Moser and Andreas Schnabl. A new version is under development by Martin Avanzini, Andreas Kochesser, Michael Schaper and Maria Schett.