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Proof step 17 from proof junkref-primarray-level-01 (previous step)

st[r -- i '] = refval(r0), is_array(str1, r, st), 0 ≤ i, 0 < st[r -- _length] .intval, is_array(str, r, st), i < st[r -- _length] .intval, junkrefs(str, r0 ' + refs1, st[r -- _type] .type .type, st), is_valid_ref(str1, r0, st), st[r0 -- _type] .type ≤ st[r -- _type] .type .type, ∀ str1, st0, r1, str, refs. # refs < # (r0 + refs1) → ( junkrefs(str, r1 ' + refs, st0[r1 -- _type] .type, st0) → has_classtype(st0[r1 -- _type] .type) ∨ junkrefs(str1, r1 ' + refs, st0[r1 -- _type] .type, st0)) ⊦ st[r -- _type] .type .type = st[r0 -- _type] .type, r = jvmref, r0 = jvmref, has_classtype(st[r -- _type] .type), junkrefs(str1, r0 ' + refs1, st[r -- _type] .type .type, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[speclemmaarg: ,¬ has_classtype(ty) → (ty0 ≤ ty ↔ ty0 = ty) ,[ty, ty0] → [st[r -- _type] .type .type, st[r0 -- _type] .type] ,F ,typefuns , ,le-hasct ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st[r -- _type] .type .type, st[r0 -- _type] .type)]]