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Proof step 17 from proof fix-rec-neg (previous step)

b2i(by) < 0, bytes2int(by ' + bytes0) < 0 ⊦ mklist(i2b(~1), n) = i2b(~1) ' + mklist(i2b(~1), n - 1), n = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 18:
⊦ 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, i2b(~1)] rotate: F spec: list-last inst: bytelist name: mk-rec

Additional information

Used simplifier rules: ⊦ by + bytes = by ' + bytes;% ⊦ bytes + bytes0 = bytes + bytes1 ↔ bytes0 = bytes1;% ⊦ (bytes + bytes0) + bytes1 = bytes + bytes0 + bytes1; Used terms: n, i2b(~1)