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Proof step 16 from proof initialization (previous step)

⊦ ⟨posix_format#(n, isdir0, LEB_SIZE, md; ; root, fs0, ofh0, psynced, err0)⟩ (ofh0 = ∅ ∧ fs0 = ∅ ∧ abs(root, ROOT_INO)((∅ ++ ROOT_INO)[ROOT_INO, mkdir(0, md, 0, 0, ∅)]) ∧ ESUCCESS = err0)

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 17:
isdir ↔ isdir0, ino = LEB_SIZE ⊦ ⟨if ino = LEB_SIZE then { root := dnode(md, ∅), fs := ∅, ofh := ∅, psynced := true, err0 := ESUCCESS or {root := ?, fs := ?, ofh := ?, psynced := ?; choose err with ⌊err⌋ in err0 := err}} else abort⟩ (ofh = ∅ ∧ fs = ∅ ∧ abs(root, ROOT_INO)((∅ ++ ROOT_INO)[ROOT_INO, mkdir(0, md, 0, 0, ∅)]) ∧ ESUCCESS = err0)

Rule argument

pos: right 1

Additional information

Used simplifier rules: posix_format#(N, DOSYNC, SIZE, MD; ; ROOT, FS, OFH, PSYNCED, ERR) {if SIZE = LEB_SIZE then { ROOT := dnode(MD, ∅), FS := ∅, OFH := ∅, PSYNCED := true, ERR := ESUCCESS or {ROOT := ?, FS := ?, OFH := ?, PSYNCED := ?; choose E with ⌊E⌋ in ERR := E}} else abort };