Problem:
 b() -> f(b())
 c() -> b()
 f(f(f(c()))) -> a()
 f(h(b(),b())) -> h(h(c(),a()),b())

Proof:
 Uncurry Processor:
  b() -> f5(f(),b())
  c() -> b()
  f5(f(),f5(f(),f5(f(),c()))) -> a()
  f5(f(),f5(f5(h(),b()),b())) -> f5(f5(h(),f5(f5(h(),c()),a())),b())
  Ground Confluence Processor:
   non-confluent by decision procedure.