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Proof step 82 from proof refine-lookup (previous step)

boolvar0 ↔ boolvar, dent = old_dent, err = err0, ro = orphans(fs, ri), fs[ri[inodekey(p_ino)]].directory, fo.inodes?, orphans(fs, ri).inodes?, afs-cons(abs-dirs(fs, ri), abs-files(fs, ri)), file-node-cons(fs, ri), log-cons(log, fs), orphans-cons(fs, ri, orphans(fs, ri)), replay-cons-strong(fs, ri, orphans(fs, ri), fi, fo, log), ri-inj(fi), ri-inj(ri), ubifs-cons(fs, ri, orphans(fs, ri), fi, fo, log), inodekey(p_ino) ∈ ri, asynced → boolvar, links(p_ino, abs-dirs(fs, ri)) ≠ ∅ ∨ p_ino = ROOT_INO ⊦ valid-parent-ino(p_ino, fs, ri, ro)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: <toplevel> name: valid-parent-ino-precond seq: ⊦ afs-cons(abs-dirs(fs, ri), abs-files(fs, ri)) ∧ fs[ri[inodekey(m)]].directory ∧ inodekey(m) ∈ ri ∧ fo.inodes? ∧ ro.inodes? ∧ log-cons(log, fs) ∧ ri-inj(fi) ∧ ri-inj(ri) ∧ replay-cons-strong(fs, ri, ro, fi, fo, log) ∧ ubifs-cons(fs, ri, ro, fi, fo, log) ∧ abs-keys(ro) = abs-keys(orphans(fs, ri)) ∧ (links(m, abs-dirs(fs, ri)) ≠ ∅ ∨ m = ROOT_INO) → valid-parent-ino(m, fs, ri, ro) subst: [fo, log, fi, ro, ri, fs, m] → [fo, log, fi, ro, ri, fs, p_ino] flags: <all paths>

Additional information

Used simplifier rules: ⊦ valid-parent-ino(ino, fs, ri, ro) ↔ ( valid-dir-ino(ino, fs, ri) ∧ (fs[ri[inodekey(ino)]].nlink ≠ 0 ∨ ino = ROOT_INO)) ∧ ¬ inodekey(ino) ∈ ro; (s)%⊦ valid-dir-ino(ino, fs, ri) ↔ inodekey(ino) ∈ ri ∧ fs[ri[inodekey(ino)]].directory; (s)%⊦ key ∈ orphans(fs, ri) ↔ key.inode? ∧ key ∈ ri ∧ fs[ri[key]].nlink = 0 ∧ key.ino ≠ ROOT_INO; (s)% ⊦ inodekey(m).inode?; (s)% ⊦ inodekey(m).ino = m; (s)% ⊦ ubifs-cons(fs, ri, ro, fi, fo, log) → fo.inodes?; (ss)% ⊦ ubifs-cons(fs, ri, ro, fi, fo, log) → ro.inodes?; (ss)% ⊦ ubifs-cons(fs, ri, ro, fi, fo, log) → log-cons(log, fs); (ss)% ⊦ ubifs-cons(fs, ri, ro, fi, fo, log) → ri-inj(ri); (ss) Used terms: fo, log, fi, ro, ri, fs, p_ino