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Proof step 4 from proof junkref-put-norefval (previous step)

okval(val, ty), junkrefs(str, r ' + refs1, st[r -- _type] .type, st[r1 -- mkfs(class, ty, fieldvar) ', val]) ⊦ mkfs(class, ty, fieldvar) ' = _length, ty = void_type, is_referencevalue(val), junkrefs(str, r ' + refs1, st[r -- _type] .type, st)

User applied rule insert lemma

And obtained the following new goals

Proof step 3:
⊦ ¬ is_referencevalue(val) ∧ ¬ junkrefs(str, refs, ty, st) ∧ is_fskey(sk) ∧ oktype(val, sk .fs .type, st) ∧ sk .fs .type ≠ void_type ∧ sk ≠ _length → ¬ junkrefs(str, refs, ty, st[r1 -- sk, val])

Rule argument

[LEMMAARG : junkrefs-put-norefval, [val, str, refs, ty, st, sk, r1] → [val, str, r ' + refs1, st[r -- _type] .type, st, mkfs(class, ty, fieldvar) ', r1]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ is_fskey(fs ')], [CSIMPSEQ : ⊦ fs ' .fs = fs], [CSIMPSEQ : ⊦ mkfs(class, ty, fieldvar) .type = ty], [CSIMPSEQ : ⊦ oktype(val, ty, st) ↔ okval(val, ty)])], [EXTRATERMS : (val, str, r ' + refs1, st[r -- _type] .type, st, mkfs(class, ty, fieldvar) ', r1)]]