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Theorem union-diff2

h1 ⊥ h2 ⊦ (h1 ∪ h2) \ h2 = h1

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 2
Used lemmas: uni-emp, same-diff-empty, disj-diff-id1, union-diff-distr,
Used spec theorems:
- heap/ext
Used simplifier rules: