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Proof step 18 from proof initialization (previous step)

isdir ↔ isdir0, ino = LEB_SIZE ⊦ ⟨ root := dnode(md, ∅), fs := ∅, ofh := ∅, psynced := true, err0 := ESUCCESS or {root := ?, fs := ?, ofh := ?, psynced := ?; choose err with ⌊err⌋ in err0 := err}⟩ (ofh = ∅ ∧ fs = ∅ ∧ abs(root, ROOT_INO)((∅ ++ ROOT_INO)[ROOT_INO, mkdir(0, md, 0, 0, ∅)]) ∧ ESUCCESS = err0)

Heuristic symbolic execution applied rule or right

And obtained the following new goals

Proof step 19:
isdir ↔ isdir0, ino = LEB_SIZE ⊦ ⟨root := ?, fs := ?, ofh := ?, psynced := ?; choose err with ⌊err⌋ in err0 := err⟩ (ofh = ∅ ∧ fs = ∅ ∧ abs(root, ROOT_INO)((∅ ++ ROOT_INO)[ROOT_INO, mkdir(0, md, 0, 0, ∅)]) ∧ ESUCCESS = err0), ⟨root := dnode(md, ∅), fs := ∅, ofh := ∅, psynced := true, err0 := ESUCCESS⟩ (ofh = ∅ ∧ fs = ∅ ∧ abs(root, ROOT_INO)((∅ ++ ROOT_INO)[ROOT_INO, mkdir(0, md, 0, 0, ∅)]) ∧ ESUCCESS = err0)

Proof step 18 from proof initialization (previous step)

Heuristic symbolic execution applied rule or right

And obtained the following new goals

Rule argument

Additional information