Term Rewriting System R:
[x, y]
f(x, a(b(y))) -> f(c(d(x)), y)
f(c(x), y) -> f(x, a(y))
f(d(x), y) -> f(x, b(y))

Innermost Termination of R to be shown. 



   R
     ↳Dependency Pair Analysis



R contains the following Dependency Pairs:

F(x, a(b(y))) -> F(c(d(x)), y)
F(c(x), y) -> F(x, a(y))
F(d(x), y) -> F(x, b(y))

Furthermore, R contains one SCC. 


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




The following remains to be proven:
Dependency Pairs:

F(d(x), y) -> F(x, b(y))
F(c(x), y) -> F(x, a(y))
F(x, a(b(y))) -> F(c(d(x)), y)


Rules:


f(x, a(b(y))) -> f(c(d(x)), y)
f(c(x), y) -> f(x, a(y))
f(d(x), y) -> f(x, b(y))


Strategy:

innermost



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