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Proof step 11 from proof is_valid_ref-put (previous step)

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

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 10:
⊦ is_obj(r, st) ∧ oktype(val, ty, st) ∧ ty ≠ void_type → is_obj(r, st[r1 -- mkfs(class, ty, fieldvar) ', val])

Rule argument

[crewrite-arg: isobj-put-02 , F , [val, fieldvar, ty, class, r1, st, r] → [val, fieldvar, ty, class, r, st, r] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ oktype(val, ty, st) ↔ okval(val, ty)])], [EXTRATERMS : (val, fieldvar, ty, class, r, st, r)]]