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

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