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Proof step 33 from proof junkref-put-badfield (conclusion)

⊦ ¬ junkref(str, r, st) ∧ ¬ (is_typevalue(st[r0 -- _type]) ∧ is_reftype(st[r0 -- _type] .type)) → ¬ junkref(str, r, st[r0 -- fs ', val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 32:
junkref(str, r, 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 : ()]]