| key ∈ ks ⊦ # ks = 0, key0 ∈ ri ⊖ key ∧ ¬ key0 ∈ ks ∧ (key0.data? → ¬ inodekey(key0.ino) ∈ ks) ↔ key0 ∈ ri ⊖ ks, ks = ∅ |
⊦ key ∈ ri ⊖ key0 ↔ key ∈ ri ∧ key ≠ key0 ∧ (key.data? → inodekey(key.ino) ≠ key0)
Used simplifier rules: in-dels-ro: ⊦ key ∈ ri ⊖ ks ↔ key ∈ ri ∧ ¬ key ∈ ks ∧ (key.data? → ¬ inodekey(key.ino) ∈ ks); Used terms: key, ri, key0