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Proof step 1 from proof btree-sub-clean-leaf (conclusion)

⊦ r ∈ zh ∧ zh[r] = mkznode(rp, zbrar, true, dirty, height) → btree-sub-clean(r, n, zh)

System applied rule normalize

And obtained the following new goals

Proof step 2:
zh[r] = mkznode(rp, zbrar, true, dirty, height), r ∈ zh ⊦ btree-sub-clean(r, n, zh)

Rule argument

Additional information