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Proof step 5 from proof prepost-fix-ecs (previous step)

valid-indices(wlar, nx) ⊦ dups(nx), valid-indices(wlar, [])

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: array-indices, inst: wlarray-base name: valid-indices seq: ⊦ valid-indices(wlar, nx) ↔ nx < # wlar subst: [nx, wlar] → [[], wlar] flags: <all paths>

Additional information

Used simplifier rules: ⊦ [] < n; (s) Used terms: [], wlar