Termination Proof Script

Consider the TRS R consisting of the rewrite rule
1:    f(x,y,f(z,u,v))  → f(f(x,y,z),u,f(x,y,v))
There are 3 dependency pairs:
2:    F(x,y,f(z,u,v))  → F(f(x,y,z),u,f(x,y,v))
3:    F(x,y,f(z,u,v))  → F(x,y,z)
4:    F(x,y,f(z,u,v))  → F(x,y,v)
Consider the SCC {2-4}. The constraints could not be solved.
Tyrolean Termination Tool  (0.01 seconds)   ---  May 3, 2006