Integer Term Rewriting
The main idea of ITRSs is to add pre-defined constructors for integers (the integers themselves) and Booleans (true / false) and arithmetic, relational and Boolean functions like
+, -, *,/ ,%, >, >=, <, &&, ||, !, ...
to conventional TRSs. To this aim it is necessary to extend the XTC format by the ability to represent pre-defined semantics for function symbols. Not only ITRSs, but also other extensions with pre-defined functions can be represented using this extension of the XTC format.