| nd.key = key ⊦ ¬ adr ∈ fs ∧ log-cons(log, fs) ∧ node-cons(key, nd) ∧ ri-cons(ri, fs) ∧ replay-cons-strong(fs, ri, ro, fi, fo, log) → (replay-cons-strong(fs[adr, nd], ri[key, adr], ro, fi, fo, log + adr ') ↔ replay-one(adr, nd, ri ⊖ ro) = ri[nd.key, adr] ⊖ ro) |