Termination Proof Script

Consider the TRS R consisting of the rewrite rules
1:    f(f(f(a,x),y),z)  → f(f(x,z),f(y,z))
2:    f(f(b,x),y)  → x
3:    f(c,y)  → y
There are 3 dependency pairs:
4:    F(f(f(a,x),y),z)  → F(f(x,z),f(y,z))
5:    F(f(f(a,x),y),z)  → F(x,z)
6:    F(f(f(a,x),y),z)  → F(y,z)
Consider the SCC {4-6}. The constraints could not be solved.
Tyrolean Termination Tool  (0.01 seconds)   ---  May 3, 2006