Termination Proof Script

Consider the TRS R consisting of the rewrite rule
1:    app(app(F,app(app(F,f),x)),x)  → app(app(F,app(G,app(app(F,f),x))),app(f,x))
There are 4 dependency pairs:
2:    APP(app(F,app(app(F,f),x)),x)  → APP(app(F,app(G,app(app(F,f),x))),app(f,x))
3:    APP(app(F,app(app(F,f),x)),x)  → APP(F,app(G,app(app(F,f),x)))
4:    APP(app(F,app(app(F,f),x)),x)  → APP(G,app(app(F,f),x))
5:    APP(app(F,app(app(F,f),x)),x)  → APP(f,x)
The approximated dependency graph contains one SCC: {2,5}.
Tyrolean Termination Tool  (0.03 seconds)   ---  May 3, 2006