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Theorem bar-at

⊦ n→i(n) < j → (getbytearray(r, i, j, st)[n]) = st[r -- (i + n→i(n)) '] .byteval

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: bar-at-01, getbytearray-subset,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 2
Used lemmas: get-get, get-length, getByteArray,
Used spec theorems:
- valuesfuns/bytevals-at
Used simplifier rules: