TRS:
 { +(0(), y) -> y,
  +(s(x), y) -> s(+(x, y)),
  +(s(x), y) -> +(x, s(y))}
 Cdiprover:
  Interpretation class: pizerosimplemixed
  Complexity bound: POLYTIME COMPUTABLE
  s(X2) = + 1*X2 + 1
  0 = + 1
  +(X1, X0) = + 0*X1^2 + 0*X0^2 + 2*X1 + 0 + 1*X0 + 0*X0*X1
  
  Qed