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Proof step 7 from proof validref-put-array-norefval (previous step)

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

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ validref(str, r, ty, st) ↔ r = jvmref ∨ st[r -- _type] .type ≤ ty ∧ ¬ junkref(str, r, st)
Proof step 6:
okval(val, st[r1 -- _type] .type .type), st[r -- _type] .type ≤ ty ⊦ r = jvmref, is_referencevalue(val), r = jvmref ∨ (st[r1 -- i ', val][r -- _type]) .type ≤ ty ∧ ¬ junkref(str, r, st[r1 -- i ', val]), junkref(str, r, st)

Rule argument

[crewrite-arg: validref-def , F , [st, ty, r, str] → [st[r1 -- i ', val], ty, r, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st[r1 -- i ', val], ty, r, str)]]