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Proof step 15 from proof reachable-n-rec-rev2 (previous step)

reachable-n(H, (n + 1) + 1, r, r0), reachable-n(H, n, r, r2), reachable-1(H, r2, r1), reachable-1(H, r1, r0), reachable-n(H, n + 2, r, r0) ⊦ (r2 ≠ null ∧ H[r2].nxt ≠ null ∧ r2 ∈ H ∧ H[r2].nxt ∈ H ∧ H[r2].nxt = H[r2].nxt) ∧ reachable-1(H, H[r2].nxt, r0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 16:
reachable-n(H, (n + 1) + 1, r, r0), reachable-n(H, n, r, r2), reachable-1(H, r2, r1), reachable-1(H, r1, r0), reachable-n(H, n + 2, r, r0) ⊦ r2 ≠ null ∧ H[r2].nxt ≠ null ∧ r2 ∈ H ∧ H[r2].nxt ∈ H ∧ reachable-1(H, H[r2].nxt, r0)

Proof step 15 from proof reachable-n-rec-rev2 (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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