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Proof step 4 from proof reachset-mem-reach (conclusion)

⊦ reachS(a, S, n) ∧ b ∈ S → (¬ reach(a, b, n) ↔ false)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
b ∈ S, reachS(a, S, n) ⊦ S = ∅, # S = 0, reach(a, b, n)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ s ≠ ∅ → # s ≠ 0], [CSIMPFORWARD : ⊦ a ∈ s → s ≠ ∅])]]