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Proof step 1 from proof dom-disj-in-l (conclusion)

⊦ dom gstore ∩ dom istore = ∅ ∧ n ∈ gstore → (n ∈ istore ↔ false)

System applied rule normalize

And obtained the following new goals

Proof step 2:
dom gstore ∩ dom istore = ∅, n ∈ gstore ⊦ n ∈ istore ↔ false

Rule argument

Additional information