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Proof step 1 from proof mk-last-02 (conclusion)

⊦ n ≠ 0 → mklist(a, n) = mklist(a, n -1) + a '

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ n = 0, mklist(a, n) = a ' + mklist(a, n - 1)

Rule argument

Additional information

Used simplifier rules: mk-last: ⊦ mklist(a, n) + a ' = a ' + mklist(a, n);%a: ⊦ (x + y) + z = x + y + z; from specification list%pred-03: ⊦ n -1 = n - 1; from specification nat