(ignored inputs)COMMENT Exercise 6.18 of \cite{BN98}
Rewrite Rules:
   [ f(g(?x,a,b)) -> ?x,
     p(a) -> c,
     g(f(h(c,d)),?x,?y) -> h(p(?x),q(?x)),
     q(b) -> d ]
Apply Direct Methods...
Inner CPs:
   [ f(h(p(a),q(a))) = f(h(c,d)) ]
Outer CPs:
   [  ]
not Overlay, check Termination...
Terminating, not WCR
Knuth&Bendix
Direct Methods: not CR

Final result: not CR
/local-scratch/hzankl/2012/cops2012/5.trs: Success(not CR)
(1 msec.)