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Proof step 7 from proof junkref-put-norefval-01 (previous step)

refs = r + refs1, okval(val, ty), junkrefs(str, refs, st[r -- _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 = r ∧ junkrefs(str, refs0, st[r -- _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]) ⊦ ty = void_type, mkfs(class, ty, fieldvar) ' = _length, is_referencevalue(val), ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, st[refs .first -- _type] .type, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ' + refs ≠ []], [CSIMPSEQ : ⊦ r + refs = r ' + refs])]]