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Proof step 5 from proof junkref-put-norefval-equiv (previous step)

okval(st[r1 -- mkfs(class, ty, fieldvar) '], ty), r1 -- mkfs(class, ty, fieldvar) ' ∈ st, okval(val, ty), r1 ∈ st, junkrefs(str, r ' + refs0, st[r -- _type] .type, st) ⊦ mkfs(class, ty, fieldvar) ' = _length, ty = void_type, is_referencevalue(val), junkrefs(str, r ' + refs0, st[r -- _type] .type, st[r1 -- mkfs(class, ty, fieldvar) ', val])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 4:
⊦ okval(st[r1 -- sk], sk .fs .type) ∧ r1 -- sk ∈ st ∧ ¬ is_referencevalue(val) ∧ is_fskey(sk) ∧ okval(val, sk .fs .type) ∧ sk .fs .type ≠ void_type ∧ sk ≠ _length → (junkrefs(str, refs, ty, st[r1 -- sk, val]) ↔ junkrefs(str, refs, ty, st))

Rule argument

[crewrite-arg: junkrefs-put-norefval-equiv , F , [val, sk, r1, st, ty, refs, str] → [val, mkfs(class, ty, fieldvar) ', r1, st, st[r -- _type] .type, r ' + refs0, str] ]

Additional information

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