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Proof step 5 from proof fix-two-03 (previous step)

fix(2, bytes) = by ', by ∈ fix(2, bytes) ⊦ [].butlast = []

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
⊦ # bytes ≠ # bytes0 → bytes ≠ bytes0

Rule argument

seq: ⊦ # bytes ≠ # bytes0 → bytes ≠ bytes0 subst: [bytes0, bytes] → [by ', fix(2, bytes)] rotate: F spec: list-data inst: bytelist name: length-neq

Additional information

Used simplifier rules: fix-length: ⊦ # fix(n, bytes) = n;% ⊦ # by ' = 0 +1; Used terms: by ', fix(2, bytes)