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Proof step 12 from proof is_array-norefval (previous step)

st[r -- _type] = typeval(ty0), ty0 = mkarraytype(ty), i < st[r -- _length] .intval, is_reftype(ty), r ∈ st, 0 < st[r -- _length] .intval, 0 ≤ i, okarray(r, ty, st), is_typevalue(st[r -- _type]), r -- _type ∈ st, type∃(str, ty) ⊦ ty .jtelemtype = void_type, ty .jtelemtype = abstract_type, r = jvmref, is_referencevalue(st[r -- i '])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 11:
st[r -- _type] = typeval(mkarraytype(ty)), type∃(str, ty), r -- _type ∈ st, okarray(r, ty, st), 0 ≤ i, 0 < st[r -- _length] .intval, r ∈ st, is_reftype(ty), i < st[r -- _length] .intval ⊦ r = jvmref, ty .jtelemtype = abstract_type, ty .jtelemtype = void_type, is_referencevalue(st[r -- i '])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_typevalue(typeval(ty))])]]