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Theorem disj-singleton-write

r ≠ null ⊦ (∅ ++ r)[r, o] ⊥ h ↔ ¬ r ∈ h

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: union-left-singleton, union-left-singleton-at,
Used by units in proved state: linked-list, maplet, separation,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 2
Used lemmas: in-emp, in-alloc, in-write, disj,
Used spec theorems:
- Used simplifier rules: