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Theorem is_valid_ref-def

⊦ is_valid_ref(str, r, st) ↔ ¬ ¬ (is_valid_ref(r, st) ∧ (is_obj(str, r, st) ∨ is_array(str, r, st)))

Type: A user defined theorem
Validity: The proof is valid.
Features: localsimp,
Comment:
Used by: is_valid_ref, is_valid_ref-01, is_valid_ref-02, is_valid_ref-03, is_valid_ref-addobj, is_valid_ref-addobj-01, is_valid_ref-del, is_valid_ref-del-01, is_valid_ref-field-in, is_valid_ref-isobj, is_valid_ref-new, is_valid_ref-notin, is_valid_ref-notin-01, is_valid_ref-notin-02, is_valid_ref-null, is_valid_ref-primarray, is_valid_ref-primtype, is_valid_ref-primtype-01, is_valid_ref-put, is_valid_ref-put-01, is_valid_ref-put-samefield, is_valid_ref-put-samefield-01, is_valid_ref-putbytearray, is_valid_ref-type, is_valid_ref-type-typeval, is_valid_ref-typeex, is_valid_ref-typeex-01, is_valid_ref-typeex-02, is_valid_ref-typeval, is_valid_ref-typeval-01, is_valid_ref-update, is_valid_ref-void, isvalidref-put-array-badindex,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 5
Proof steps: 10
Used lemmas: is-valid-ref, validref-isobj, is-valid-ref-stronger-def, is-real-object-def,
Used spec theorems:
- okfuns/is-real-array-def
Used simplifier rules: