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Theorem is-encoded-unique

⊦ is-encoded(a, buf) → (is-encoded(b, buf) ↔ a = b)

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: is-encoded-not-garbage, is-encoded-prefix,
Used by units in proved state: encoding-fixed-size-nonempty, encoding-aligned,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 3
Used lemmas: is-encoded-unique-size,
Used spec theorems:
- Used simplifier rules:
  - nat/ler
  - array-copy/buffer/subarray-elim