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Theorem is_valid_ref-02

⊦ is_obj(r, class, st) → (is_valid_ref(str, r, st) ↔ class+∃(str, class) ∧ ¬ is_abstract(class))

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 3
Proof steps: 7
Used lemmas: is-any-object, is_obj-def, is-real-object-def, validref-02, is_valid_ref-def,
Used spec theorems:
- Used simplifier rules:
  - okfuns/is_array-type-03
  - javatype/test-10
  - javavalue/test-92
  - javatype/sel-02
  - javavalue/sel-11
  - storefuns/instore-01
  - store/javastore/In-store