| boolvar ↔ boolvar0, err = ESUCCESS, nd = fs[adr], ri0 = ri, nd.trunc?, node-cons(fs[adr].key, fs[adr]), adr ∈ fs ⊦ ⟪aubifs_core_index_truncate#(nd.key, nd.size, fi, ro, fo, fs, log, boolvar0; ri)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → ri = replay-one(adr, fs[adr], ri0))), nd.data?, nd.dentry?, nd.inode?, adr ∈ ri |
ri0 = ri, fs[adr].trunc?, node-cons(fs[adr].key, fs[adr]), adr ∈ fs, ¬ fs[adr].data?, ¬ fs[adr].dentry?, ¬ fs[adr].inode?, ¬ adr ∈ ri ⊦ ⟪aubifs_core_index_truncate#(fs[adr].key, fs[adr].size, fi, ro, fo, fs, log, boolvar0; ri)⟫ (ri = replay-one(adr, fs[adr], ri0))