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Proof step 87 from proof junkref-subspec-samesubclasses (previous step)

same-subclasses-contains(st[r -- _type] .type .jtelemtype .class, str, str0), junkrefs(str, r ' + refs0, st[r -- _type] .type, st) ⊦ junkref(str0, r, st)

User applied rule induction

And obtained the following new goals

Proof step 86:
same-subclasses-contains(st[r -- _type] .type .jtelemtype .class, str, str0) ∧ junkrefs(str, r ' + refs0, st[r -- _type] .type, st), ∀ str0, str, r, st, refs. # refs < # refs0 → ( same-subclasses-contains(st[r -- _type] .type .jtelemtype .class, str, str0) ∧ junkrefs(str, r ' + refs, st[r -- _type] .type, st) → junkref(str0, r, st)) ⊦ junkref(str0, r, st)

Rule argument

[INDHYPARG : [STANDARDINDUCTIONTYPE : ], true, false, # refs0, [] → [], <]

Additional information

[[CONCRETESIMPRULES : ([CSIMPLESSPRED : <])], [EXTRATERMS : (# refs0)]]