| pre-truncate(inode, n, pageno, buf-opt, dirs, files), afs-cons(dirs, files), asynced, dirs0 = dirs \ orphans(dirs, files), files0 = files \ orphans(dirs, files) ⊦ ⟨afs_truncate#(n, pageno; buf-opt, inode, asynced0, err, dirs, files, asynced)⟩ (asynced ∧ dirs0 = dirs \ orphans(dirs, files) ∧ files0 = files \ orphans(dirs, files)) |