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Proof step 14 from proof validref-pseq (previous step)

ps=(r, st, r1, st1), validref(`docs2store', r1, ty, st1) ⊦ junkref(`docs2store', r, st), validref(`docs2store', r, ty, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ validref(str, r, ty, st) ↔ okreftype(refval(r), ty, st) ∧ ¬ junkref(str, r, st)
Proof step 13:
ps=(r, st, r1, st1), okreftype(refval(r1), ty, st1) ∧ ¬ junkref(`docs2store', r1, st1) ⊦ junkref(`docs2store', r, st), validref(`docs2store', r, ty, st)

Rule argument

[speclemmaarg: , validref(str, r, ty, st) ↔ okreftype(refval(r), ty, st) ∧ ¬ junkref(str, r, st) ,[st, ty, r, str] → [st1, ty, r1, `docs2store'] ,F ,compatible , ,validref-def ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st1, ty, r1, `docs2store')]]