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Proof step 1 from proof reachable-addnew (conclusion)

⊦ reachable(r, r1, H) ∧ ¬ r2 ∈ H → (¬ reachable(r, r1, H[r2, ce]) ↔ false)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
reachable(r, r1, H), r1 ∈ H ⊦ r2 ∈ H, reachable(r, r1, H[r2, ce])

Rule argument

Additional information

Used simplifier rules: reach-alloc: ⊦ reachable(r, r1, H) → r1 ∈ H;