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Proof step 17 from proof abs-orphans (previous step)

fs[ri[inodekey(ROOT_INO)]].directory, inodekey(ino) ∈ ri, inodekey(ROOT_INO) ∈ ri, ¬ fs[ri[inodekey(ino)]].directory → fs[ri[inodekey(ino)]].nlink = # links(ino, abs-dirs(fs, ri)), fs[ri[inodekey(ino)]].directory → fs[ri[inodekey(ino)]].nlink = # links(ino, abs-dirs(fs, ri)) ∧ fs[ri[inodekey(ino)]].nlink ≤ 1 ∧ fs[ri[inodekey(ino)]].size = # abs-children(ino, fs, ri) ∧ fs[ri[inodekey(ino)]].nsubdirs = # subdirs(ino, abs-dirs(fs, ri)), fs[ri[inodekey(ino)]].directory ∧ links(ino, abs-dirs(fs, ri)) = ∅ → abs-children(ino, fs, ri) = ∅, ∀ ino0. (inodekey(ino0) ∈ ri ∧ fs[ri[inodekey(ino0)]].directory ∧ ino0 ≠ ROOT_INO ∧ links(ino0, abs-dirs(fs, ri)) = ∅ → abs-children(ino0, fs, ri) = ∅) ∧ ( inodekey(ino0) ∈ ri ∧ fs[ri[inodekey(ino0)]].directory → fs[ri[inodekey(ino0)]].nlink = # links(ino0, abs-dirs(fs, ri)) ∧ fs[ri[inodekey(ino0)]].nlink ≤ 1 ∧ fs[ri[inodekey(ino0)]].size = # abs-children(ino0, fs, ri) ∧ fs[ri[inodekey(ino0)]].nsubdirs = # subdirs(ino0, abs-dirs(fs, ri))) ∧ (inodekey(ino0) ∈ ri ∧ ¬ fs[ri[inodekey(ino0)]].directory → fs[ri[inodekey(ino0)]].nlink = # links(ino0, abs-dirs(fs, ri))) ∧ (∀ name. inodekey(ino0) ∈ ri ∧ fs[ri[inodekey(ino0)]].directory ∧ dentrykey(ino0, name) ∈ ri → inodekey(fs[ri[dentrykey(ino0, name)]].ino) ∈ ri ∧ fs[ri[inodekey(fs[ri[dentrykey(ino0, name)]].ino)]].directory ∨ inodekey(fs[ri[dentrykey(ino0, name)]].ino) ∈ ri ∧ ¬ fs[ri[inodekey(fs[ri[dentrykey(ino0, name)]].ino)]].directory) ∧ (∀ n. inodekey(ino0) ∈ ri ∧ ¬ fs[ri[inodekey(ino0)]].directory ∧ datakey(ino0, n) ∈ ri → # fs[ri[datakey(ino0, n)]].data = VFS_PAGE_SIZE), ∀ n. ¬ fs[ri[inodekey(ino)]].directory ∧ datakey(ino, n) ∈ ri → # fs[ri[datakey(ino, n)]].data = VFS_PAGE_SIZE, ∀ name. fs[ri[inodekey(ino)]].directory ∧ dentrykey(ino, name) ∈ ri → inodekey(fs[ri[dentrykey(ino, name)]].ino) ∈ ri ∧ fs[ri[inodekey(fs[ri[dentrykey(ino, name)]].ino)]].directory ∨ inodekey(fs[ri[dentrykey(ino, name)]].ino) ∈ ri ∧ ¬ fs[ri[inodekey(fs[ri[dentrykey(ino, name)]].ino)]].directory ⊦ links(ino, abs-dirs(fs, ri)) = ∅ ↔ fs[ri[inodekey(ino)]].nlink = 0, ino = ROOT_INO

Heuristic nonsplitting cut applied rule cut formula

And obtained the following new goals

Rule argument

fma: fs[ri[inodekey(ino)]].directory

Additional information

Used simplifier rules: ⊦ m ≠ 0 → (m ≤ 1 ↔ m = 1); (s)%size-zero: ⊦ # ls ≠ 0 → ls ≠ ∅; (forward) from specification set-basic[alink-set]%size-zero-02: ⊦ # ls = 0 → ls = ∅; (forward) from specification set-basic[alink-set]%size-zero-01: ⊦ ls ≠ ∅ → # ls ≠ 0; (forward) from specification set-basic[alink-set] Used formulas: fs[ri[inodekey(ino)]].directory