YES
O(n^2)
TRS:
 {
      half(0()) -> 0(),
  half(s(s(x))) -> s(half(x)),
    log(s(0())) -> 0(),
   log(s(s(x))) -> s(log(s(half(x))))
 }
 Natural interpretation:
  Strict:
   {
        half(0()) -> 0(),
    half(s(s(x))) -> s(half(x)),
      log(s(0())) -> 0(),
     log(s(s(x))) -> s(log(s(half(x))))
   }
  Weak:
   {}
  Interpretation class: deltarestricted
  [log](delta, X0) = + 1*X0 + 0 + 1*X0*delta + 0*delta
  [s](delta, X0) = + 1*X0 + 3 + 0*X0*delta + 2*delta
  [half](delta, X0) = + 1*X0 + 0 + 0*X0*delta + 2*delta
  [0](delta) = + 0 + 0*delta
  log_tau_1(delta) = delta/(1 + 1 * delta)
  s_tau_1(delta) = delta/(1 + 0 * delta)
  half_tau_1(delta) = delta/(1 + 0 * delta)
  
  
  Qed