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Proof step 9 from proof validref-put-array-norefval (previous step)

okval(val, st[r1 -- _type] .type .type), validref(str, r, ty, st) ⊦ is_referencevalue(val), validref(str, r, ty, st[r1 -- i ', val])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ validref(str, r, ty, st) ↔ r = jvmref ∨ st[r -- _type] .type ≤ ty ∧ ¬ junkref(str, r, st)
Proof step 8:
okval(val, st[r1 -- _type] .type .type), r = jvmref ∨ st[r -- _type] .type ≤ ty ∧ ¬ junkref(str, r, st) ⊦ is_referencevalue(val), validref(str, r, ty, st[r1 -- i ', val])

Rule argument

[crewrite-arg: validref-def, F, [st, ty, r, str] → [st, ty, r, str]]

Additional information

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