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Proof step 1 from proof path-first-in-H (conclusion)

⊦ path(r ' + x, H) → (¬ r ∈ H ↔ false)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
path(r ' + x, H) ⊦ r ∈ H

Rule argument

Additional information