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Proof step 59 from proof inv-unlink (previous step)

# links(entries0[str], dirs0) = m1 + 1, (ino = entries0[str] ⊃ mkfile(m0, md1, m1, content);mkfile(m4, md, m5, content0)) = mkfile(m6, md0, m7, content1), (ino = m ⊃ mkdir(m2, md2, # links(m, dirs0), m3, entries0 -- str);mkdir(m8, md3, m9, m10, entries)) = mkdir(m11, md4, m12, m13, entries1), files0[ino] = mkfile(m4, md, m5, content0), files0[entries0[str]] = mkfile(m0, md1, m1 + 1, content), dirs0[m] = mkdir(m2 + 1, md2, # links(m, dirs0), m3, entries0), dirs0[ino] = mkdir(m8, md3, m9, m10, entries), afs-cons(dirs0, files0), ino ∈ files0, n ∈ content1, m ∈ dirs0, str ∈ entries0, entries0[str] ∈ files0, ROOT_INO ∈ dirs0, ino ∈ dirs0 → m9 = # links(ino, dirs0) ∧ # links(ino, dirs0) ≤ 1 ∧ m8 = # entries ∧ m10 = # subdirs(ino, dirs0), ino ∈ dirs0 ∧ ino ≠ ROOT_INO ∧ links(ino, dirs0) = ∅ → entries = ∅, ino ∈ files0 → ¬ ino ∈ dirs0 ∧ m5 = # links(ino, dirs0), ino ∈ dirs0 ∧ name ∈ entries → entries[name] ∈ dirs0 ∨ entries[name] ∈ files0, links(m, dirs0) ≠ ∅ ∨ m = ROOT_INO ⊦ # content1[n] = VFS_PAGE_SIZE

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 60:
# links(entries0[str], dirs0) = m1 + 1, (ino = entries0[str] ⊃ mkfile(m0, md1, m1, content);mkfile(m4, md, # links(ino, dirs0), content0)) = mkfile(m6, md0, m7, content1), files0[ino] = mkfile(m4, md, # links(ino, dirs0), content0), files0[entries0[str]] = mkfile(m0, md1, m1 + 1, content), dirs0[m] = mkdir(m2 + 1, md2, # links(m, dirs0), m3, entries0), dirs0[ino] = mkdir(m8, md3, m9, m10, entries), afs-cons(dirs0, files0), ino ∈ files0, n ∈ content1, m ∈ dirs0, str ∈ entries0, entries0[str] ∈ files0, ROOT_INO ∈ dirs0, links(m, dirs0) ≠ ∅ ∨ m = ROOT_INO ⊦ # content1[n] = VFS_PAGE_SIZE, ino ∈ dirs0

Rule argument

Additional information

Used simplifier rules: afs-cons-file-nlink: ⊦ afs-cons(dirs, files) ∧ ino ∈ files ∧ files[ino] = mkfile(m, md, n, content) → # links(ino, dirs) = n; (forward) from specification afs-base%⊦ mkdir(m, md, m0, m1, entries) = mkdir(m2, md0, m3, m4, entries0) ↔ m = m2 ∧ md = md0 ∧ m0 = m3 ∧ m1 = m4 ∧ entries = entries0; (ws)