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Proof step 1 from proof validref-put-array-refval-02 (
previous step
)
⊦ validref(str, r, ty0, st) ∧ validref(str, r1, ty, st) ∧ mkarraytype(ty) ≤ st[r0 -- _type] .type ∧ r0 ≠ jvmref ∧ is_arraytype(st[r0 -- _type] .type) ∧ (r1 = jvmref → is_reftype(ty)) → validref(str, r, ty0, st[r0 -- i ', refval(r1)])
Lemma
validref-put-array-refval