∀ a. restn(m0, mklist(a, m0)) = [] ⊦ restn(m0 +1, mklist(a, m0 +1)) = []
Used simplifier rules: restN-zero: ⊦ restn(0, x) = x;%nat freely generated by 0, +1;;% ⊦ mklist(a, 0) = []; (s)