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Proof step 2 from proof fromnext-reachable-rev (
previous step
)
reachable(H[r].nxt, r0, H), r ∈ H ⊦ reachable(r, r0, H) ↔ true, r = null, r = r0
Heuristic simplifier applied rule simplifier
And obtained the following new goals
Proof step 3
:
reachable(H[r].nxt, r0, H), r ∈ H ⊦ r = r0, r = null, reachable(r, r0, H)
Rule argument
Additional information