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Proof step 27 from proof add-gft (previous step)

⊦ r = r0, r0 -- mkfs(class, ty0, fieldvar) ' ∈ st ∧ oktype(st[r0 -- mkfs(class, ty0, fieldvar) '], ty0, addarray(r, ty, vals, st)) ↔ r0 -- mkfs(class, ty0, fieldvar) ' ∈ st ∧ oktype(st[r0 -- mkfs(class, ty0, fieldvar) '], ty0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 8:
⊦ ¬ is_classtype(ty) ∧ ¬ is_arraytype(ty) → (oktype(val, ty, addarray(r0, ty0, vals, st)) ↔ oktype(val, ty, st))
Proof step 26:
¬ (¬ is_classtype(ty0) ∧ ¬ is_arraytype(ty0)) ⊦ r = r0, r0 -- mkfs(class, ty0, fieldvar) ' ∈ st ∧ oktype(st[r0 -- mkfs(class, ty0, fieldvar) '], ty0, addarray(r, ty, vals, st)) ↔ r0 -- mkfs(class, ty0, fieldvar) ' ∈ st ∧ oktype(st[r0 -- mkfs(class, ty0, fieldvar) '], ty0, st)

Rule argument

[crewrite-arg: oktype-init-basic , F , [st, vals, ty0, r0, ty, val] → [st, vals, ty, r, ty0, st[r0 -- mkfs(class, ty0, fieldvar) ']] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, vals, ty, r, ty0, st[r0 -- mkfs(class, ty0, fieldvar) '])]]