MAYBE
Time: 0.019

Problem:
 Equations:
  
 TRS:
  h(L(x)) -> 0()
  h(NAC(x,y)) -> maxAC(h(x),h(y))
  maxAC(0(),x) -> x
  maxAC(x,0()) -> x
  maxAC(s(x),s(y)) -> s(maxxAC(x,y))
  maxxAC(0(),x) -> x
  maxxAC(x,0()) -> x
  maxxAC(s(x),s(y)) -> s(maxAC(x,y))

Proof:
 Open