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Proof step 10 from proof junkrefs-subclass (conclusion)

⊦ is_obj(refs .first, st) ∧ ¬ junkrefs(str, refs, st[refs .first -- _type] .type, st) ∧ refs ≠ [] → ¬ junkrefs(str, refs, mkclasstype(`java.lang.Object' .class), st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
is_obj(refs .first, st), junkrefs(str, refs, mkclasstype(`java.lang.Object' .class), st) ⊦ refs = [], junkrefs(str, refs, st[refs .first -- _type] .type, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]