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Proof step 5 from proof is_array-put (previous step)

type∃(str, st[r -- _type] .type), is_array(r, st), okval(val, ty) ⊦ mkfs(class, ty, fieldvar) ' = _length, ty = void_type, st[r -- _type] .type .jtelemtype = void_type, st[r -- _type] .type .jtelemtype = abstract_type, is_array(r, st[r1 -- mkfs(class, ty, fieldvar) ', val])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ is_array(r, st) ∧ oktype(val, ty, st) ∧ ty ≠ void_type ∧ mkfs(class, ty, fieldvar) ' ≠ _length → is_array(r, st[r1 -- mkfs(class, ty, fieldvar) ', val])
Proof step 4:
⊦ oktype(val, ty, st) ↔ okval(val, ty)

Rule argument

[crewrite-arg: isarray-put , F , [val, fieldvar, ty, class, r1, st, r] → [val, fieldvar, ty, class, r1, st, r] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (val, fieldvar, ty, class, r1, st, r)]]