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Theorem isvalidref-put-array-badindex

⊦ i < 0 → (is_valid_ref(str, r0, st[r -- i ', val]) ↔ is_valid_ref(str, r0, st))

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by:
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 7
Proof steps: 13
Used lemmas: is_array-validref, validref-isobj, isobj-put-index-02, is-valid-ref, validref-put-01, is-valid-ref-stronger-def, is-real-object-def, is_obj-put-index, is_valid_ref-def,
Used spec theorems:
- okfuns/is-real-array-def
- okfuns/isarray-put-array-badindex
Used simplifier rules: