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Proof step 10 from proof reach-n-next-legal (previous step)

¬ reachable-n(H, n, r, r0) ∨ ¬ reachable-1(H, r0, H[r0] .nxt), r ∈ H, legal(H), reachable-n(H, n, r, r0) ⊦ H[r0] .nxt = null, r = null

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
r ∈ H, legal(H), reachable-n(H, n, r, r0) ⊦ H[r0] .nxt = null, r = null, reachable-1(H, r0, H[r0] .nxt)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]