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Proof step 9 from proof is_array-addarray-01 (previous step)

∃ n. n < # vals ∧ vals[n] = val, is_array(str, r, addarray(r, mkclasstype(class), vals, st)) ⊦ is_referencevalue(val)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
is_array(str, r, addarray(r, mkclasstype(class), vals, st)), n < # vals ⊦ vals = [], is_referencevalue(vals[n])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ # vals = 0 ↔ vals = []], [CSIMPFORWARD : ⊦ m < n → n ≠ 0])]]