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Theorem int2bytes-rec-neg-256-01

⊦ i < ~256 ∧ i % 256 ≠ 0 → int2bytes(i) = int2bytes(i / 256 - 1) + int2bytes(i % 256).last '

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: bytes2int-int2bytes-len-eq, int2bytes-rec-case, no-leading-zero-04, rightshift-8-01, rightshift-8-02,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 4
Used lemmas: int2bytes-empty, fix2rest-last, int2bytes-rec-neg-02,
Used spec theorems:
- Used simplifier rules:
  - int-abs/numlelsdel
  - list/bytelist/a
  - list/bytelist/app-01
  - int-basic1/numlsf
  - int-abs/lels
  - int-abs/lels-03