(m0 + 1) % 2 = 1 ⊦ 2 * (m0 + 1) / 2 = m0
Used simplifier rules: c: ⊦ m + n = n + m; from specification nat-basic%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic% ⊦ m + 1 ≠ 0; (s)