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Proof step 15 from proof inv-lookup (previous step)

err = err0, fs[ri[inodekey(p_ino)]].directory, ro.inodes?, fo.inodes?, file-node-cons(fs, ri), log-cons(log, fs), orphans-cons(fs, ri, ro), replay-cons-strong(fs, ri, ro, fi, fo, log), ri-inj(ri), ri-inj(fi), ubifs-cons(fs, ri, ro, fi, fo, log), inodekey(p_ino) ∈ ri, fs[ri[inodekey(p_ino)]].nlink ≠ 0 ∨ p_ino = ROOT_INO, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪if err = ESUCCESS then {boolvar := dentrykey(p_ino, dent.name) ∈ ri; if boolvar then nd := fs[ri[dentrykey(p_ino, dent.name)]] else nd := ?} else boolvar := ?, nd := ?; if err = ESUCCESS then if boolvar then dent := mkdentry(dent.name, nd.ino), err := ESUCCESS else dent := negdentry(dent.name), err := ENOENT⟫ true, inodekey(p_ino) ∈ ro

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

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