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Proof step 9 from proof junkref-put-norefval-01 (previous step)

okval(val, ty), ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, (st[r1 -- mkfs(class, ty, fieldvar) ', val][r -- _type]) .type, st[r1 -- mkfs(class, ty, fieldvar) ', val]) ⊦ ty = void_type, mkfs(class, ty, fieldvar) ' = _length, is_referencevalue(val), ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, st[r -- _type] .type, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
okval(val, ty), junkrefs(str, refs, st[refs .first -- _type] .type, st[r1 -- mkfs(class, ty, fieldvar) ', val]) ⊦ ty = void_type, mkfs(class, ty, fieldvar) ' = _length, refs = [], is_referencevalue(val), ∃ refs0. refs0 ≠ [] ∧ refs0 .first = refs .first ∧ junkrefs(str, refs0, st[refs .first -- _type] .type, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ty ≠ void_type → (st[ r -- mkfs (class, ty, fieldvar) ', val] [r0 -- _type ] ) = st[r0 -- _type]])]]