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Proof step 21 from proof path-dups (previous step)

(r ' + x1)[m] = r, path(r ' + x1, H), m ≤ # x1 ⊦ x1 = [], m = 0, 0 < m ∧ reachable-n(H, 0, r, (r ' + x1)[m]) ∧ reachable-n(H, m, r, (r ' + x1)[m])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 20:
(r ' + x1)[m] = r, path(r ' + x1, H), m ≤ # x1 ⊦ x1 = [], m = 0, reachable-n(H, m, r, r)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ reachable-n(H, 0, r, r0) ↔ r = r0], [CSIMPSEQ : ⊦ 0 < m ↔ m ≠ 0])]]