⊦ ¬ adr ∈ ri → ¬ adr ∈ ri ⊖ key
Used simplifier rules: ubifs-adr-in-ri: ⊦ adr ∈ ri ∧ ubifs-cons(fs, ri, ro, fi, fo, log) → adr ∈ fs; Used terms: key, ri, adr