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Proof step 4 from proof is_array-abstract (previous step)

st[r -- _type] .type .type = abstract_type, type∃(str, st[r -- _type] .type), is_array(r, st) ⊦ st[r -- _type] .type .jtelemtype = void_type, st[r -- _type] .type .jtelemtype = abstract_type

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ is_array(r, st) ↔ r ≠ jvmref ∧ r -- _type ∈ st ∧ is_typevalue(st[r -- _type]) ∧ is_arraytype(st[r -- _type] .type) ∧ okarray(r, st[r -- _type] .type .type, st)
Proof step 3:
⊦ okarray(r, ty, st) → r ≠ jvmref ∧ r ∈ st

Rule argument

[crewrite-arg: is-any-array, F, [st, r] → [st, r]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_arraytype(ty) → ty .jtelemtype = ty .type .jtelemtype], [CSIMPFORWARD : ⊦ r -- sk ∈ st → r ∈ st], [CSIMPSEQ : ⊦ abstract_type .jtelemtype = abstract_type], [CSIMPSEQ : ⊦ void_type ≠ abstract_type])], [EXTRATERMS : (st, r)]]