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Proof step 22 from proof fix2rest-last (previous step)

2 = # bytes, 0 ≤ bytes2int(bytes) ⊦ bytes = [], bytes.rest = bytes.last '

User applied rule insert elim lemma

And obtained the following new goals

Proof step 23:
bytes = by + bytes0, 2 = # bytes, 0 ≤ bytes2int(bytes) ⊦ bytes = [], bytes0 = bytes.last '

Rule argument

seq: ⊦ bytes ≠ [] → (by = bytes.first ∧ bytes0 = bytes.rest ↔ bytes = by + bytes0) subst: [bytes, by, bytes0] → [bytes, by, bytes0] rotate: T spec: list-data inst: bytelist name: elim-1

Additional information

Used simplifier rules: ⊦ bytes ≠ [] → (by = bytes.first ∧ bytes0 = bytes.rest ↔ bytes = by + bytes0); (elim) Used terms: bytes, by, bytes0