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Proof step 6 from proof compatarray-isarray (previous step)

st[r -- _length] = intval(i), st[r -- _type] = typeval(mkarraytype(ty)), 0 ≤ i, r -- _length ∈ st, is_arrayref(r, i, st), r ∈ st, r -- _type ∈ st, j < i, 0 ≤ j, 0 < i, compat(str, st[r -- j '], ty, st) ⊦ r = jvmref, okval(st[r -- j '], ty)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ compat(str, val, ty, st) ↔ okval(val, ty) ∧ ( is_referencevalue(val) ∧ val .refval ≠ jvmref → val .refval -- _type ∈ st ∧ is_typevalue(st[val .refval -- _type]) ∧ is_reftype(st[val .refval -- _type] .type) ∧ (has_classtype(st[val .refval -- _type] .type) → tdname+∃(str, st[val .refval -- _type] .type .jtelemtype .class)) ∧ (is_classtype(st[val .refval -- _type] .type) → class+∃(str, st[val .refval -- _type] .type .class)) ∧ asgcomp(str, val, ty, st))

Rule argument

[crewrite-arg: value-compat , F , [st, ty, val, str] → [st, ty, st[r -- j '], str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, ty, st[r -- j '], str)]]