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Proof step 90 from proof junkref-subspec-samesubclasses (previous step)

same-subclasses-contains(st[r -- _type] .type .jtelemtype .class, str, str0), ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, st[r -- _type] .type, st) ⊦ junkref(str0, r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 89:
same-subclasses-contains(st[refs .first -- _type] .type .jtelemtype .class, str, str0), junkrefs(str, refs, st[refs .first -- _type] .type, st) ⊦ refs = [], junkref(str0, refs .first, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]