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Proof step 3 from proof valid-indices-nodups (previous step)

dups(ar.indicesWhere(φ)) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 4:
⊦ ar.indicesWhere(φ) = ar.indicesWhere(φ, # ar)
Proof step 5:
dups(ar.indicesWhere(φ, # ar)) ⊦

Rule argument

spec: <toplevel> name: indiceswhere seq: ⊦ ar.indicesWhere(φ) = ar.indicesWhere(φ, # ar) subst: [φ, ar] → [φ, ar] flags: <all paths>

Additional information

Used terms: φ, ar