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Proof step 1 from proof linksd0 (conclusion)

⊦ links(fid, dnode(md, ∅)) = ∅

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ # links(fid, dnode(md, ∅)) = 0, links(fid, dnode(md, ∅)) = ∅

Rule argument

Additional information

Used simplifier rules: size-zero: ⊦ # ps ≠ 0 → ps ≠ ∅; (forward) from specification set-basic[pathset]%size-zero-01: ⊦ ps ≠ ∅ → # ps ≠ 0; (forward) from specification set-basic[pathset]