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Proof step 6 from proof exactarray-copy (previous step)

st[r1 -- _length] = intval(i), st[r1 -- _type] = typeval(mkarraytype(ty)), r1 -- _type ∈ st, r1 -- _length ∈ st, is_arrayref(r1, i, st), r1 ∈ st, 0 ≤ i ⊦ r1 = r0, r1 = jvmref, exactreftype(refval(r1), mkarraytype(ty), st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ exactreftype(val, ty, st) ↔ is_referencevalue(val) ∧ val .refval ∈ st ∧ (val .refval ≠ jvmref → val .refval -- _type ∈ st ∧ is_typevalue(st[val .refval -- _type]) ∧ st[val .refval -- _type] .type = ty)

Rule argument

[crewrite-arg: exactreftype , F , [st, ty, val] → [st, mkarraytype(ty), refval(r1)] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_referencevalue(refval(r))], [CSIMPSEQ : ⊦ refval(r) .refval = r], [CSIMPSEQ : ⊦ is_typevalue(typeval(ty))], [CSIMPSEQ : ⊦ typeval(ty) .type = ty], [CSIMPSEQ : ⊦ mkarraytype(ty) = mkarraytype(ty0) ↔ ty = ty0])], [EXTRATERMS : (st, mkarraytype(ty), refval(r1))]]