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Proof step 22 from proof inv-create (previous step)

root.dir?, root[parent(path)].dir?, fids-cons(root, fs, ofh), py(user, parent(path), root, fs), parent(path) ∈ root ⊦ path ∈ root, fid ∈ fs, ∃ fid. ¬ fid ∈ fs

Heuristic quantifier closing applied rule exists right

And closed the goal!

Rule argument

pos: right 3 terms: fid

Additional information

Used terms: fid