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Proof step 170 from proof fix-bits2bytes-01 (previous step)

# bits = n0 * 8, n0 < n, n0 + 1 < n, 8 ≤ (n - n0) * 8 ⊦ n - n0 = 1, bits = [], n = n0, mklist(i2b(0), n - n0) = i2b(0) ' + mklist(i2b(0), n - n0 - 1), bits.first

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 171:
⊦ m ≠ 0 → mklist(by, m) = by + mklist(by, m - 1)

Rule argument

seq: ⊦ m ≠ 0 → mklist(by, m) = by + mklist(by, m - 1) subst: [m, by] → [n - n0, i2b(0)] rotate: F spec: list-last inst: bytelist name: mk-rec

Additional information

Used simplifier rules: ⊦ n < m → m - n ≠ 0;% ⊦ by + bytes = by ' + bytes;% ⊦ bytes + bytes0 = bytes + bytes1 ↔ bytes0 = bytes1;% ⊦ (bytes + bytes0) + bytes1 = bytes + bytes0 + bytes1; Used terms: n - n0, i2b(0)