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Proof step 29 from proof junkref-put-badfield (previous step)

refs = r + refs0, junkrefs(str, refs, (st[r0 -- fs ', val][r -- _type]) .type, st[r0 -- fs ', val]) ⊦ refs = [], junkref(str, r, st), is_typevalue(st[r0 -- _type]) ∧ is_reftype(st[r0 -- _type] .type)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 28:
junkrefs(str, r ' + refs0, (st[r0 -- fs ', val][r -- _type]) .type, st[r0 -- fs ', val]) ⊦ junkref(str, r, st), is_typevalue(st[r0 -- _type]) ∧ is_reftype(st[r0 -- _type] .type)

Rule argument

[emptyarg]

Additional information

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