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Proof step 25 from proof validref-subspec-samesubclasses-01 (previous step)

same-subclasses-contains(ty .jtelemtype .class, str, str0), tdname+∃(str0, ty .jtelemtype .class), st[r -- _type] .type ≤ ty, junkref(str, r, st) ⊦ r = jvmref, junkref(str0, r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ ¬ junkref(str0, r, st) ∧ same-subclasses-contains(st[r -- _type] .type .jtelemtype .class, str, str0) → ¬ junkref(str, r, st)
Proof step 24:
¬ (¬ junkref(str0, r, st) ∧ same-subclasses-contains(st[r -- _type] .type .jtelemtype .class, str, str0)), same-subclasses-contains(ty .jtelemtype .class, str, str0), tdname+∃(str0, ty .jtelemtype .class), st[r -- _type] .type ≤ ty, junkref(str, r, st) ⊦ r = jvmref, junkref(str0, r, st)

Rule argument

[crewrite-arg: junkref-subspec-samesubclasses , F , [str0, r, st, str] → [str0, r, st, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (str0, r, st, str)]]