Termination Proof Script

Consider the TRS R consisting of the rewrite rule
1:    f(f(x,a),y)  → f(f(a,y),f(a,x))
There are 3 dependency pairs:
2:    F(f(x,a),y)  → F(f(a,y),f(a,x))
3:    F(f(x,a),y)  → F(a,y)
4:    F(f(x,a),y)  → F(a,x)
The approximated dependency graph contains one SCC: {2}.
Tyrolean Termination Tool  (0.00 seconds)   ---  May 3, 2006