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Proof step 7 from proof junkref-put-norefval (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
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), ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, 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]])]]