Term Rewriting System R:
[x]
f(f(x, a), a) -> f(f(f(a, f(a, a)), x), a)

Innermost Termination of R to be shown. 



   R
     ↳Dependency Pair Analysis



R contains the following Dependency Pairs:

F(f(x, a), a) -> F(f(f(a, f(a, a)), x), a)
F(f(x, a), a) -> F(f(a, f(a, a)), x)
F(f(x, a), a) -> F(a, f(a, a))
F(f(x, a), a) -> F(a, a)

Furthermore, R contains one SCC. 


   R
     ↳DPs
       →DP Problem 1
         ↳Remaining Obligation(s)




The following remains to be proven:
Dependency Pairs:

F(f(x, a), a) -> F(f(a, f(a, a)), x)
F(f(x, a), a) -> F(f(f(a, f(a, a)), x), a)


Rule:


f(f(x, a), a) -> f(f(f(a, f(a, a)), x), a)


Strategy:

innermost



Innermost Termination of R could not be shown.
Duration:
0:00 minutes