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Proof step 218 from proof inv-unlink (previous step)

dirs[ino1] = mkdir(m, md, # links(ino1, dirs), m1, entries), err = err0, err1 = ESUCCESS, dom of < ino0, afs-cons(dirs, files), ispath(q, ROOT_INO, ino1, dirs, files), of-cons(of, dirs, files), pw(user, md), px(user, md), px-parent(user, q, ROOT_INO, dirs, files), entries[str] ∈ files, str ∈ entries, ino1 ∈ dirs, ⌊err0⌋ ∨ err0 = ESUCCESS, links(ino1, dirs) ≠ ∅ ∨ ino1 = ROOT_INO ⊦ ⟪skip⟫ (of-cons(of, dirs, files) ∧ afs-cons(dirs, files)), err = ESUCCESS, entries[str] ∈ dirs

Heuristic symbolic execution applied rule skip right

And closed the goal!

Rule argument

Additional information

Used simplifier rules: ⊦ ⌊err⌋ → err ≠ ESUCCESS; (s)