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Proof step 4 from proof validref-put-array-refval (previous step)

is_arraytype(st[r0 -- _type] .type), mkarraytype(ty) ≤ st[r0 -- _type] .type, validref(str, r1, ty, st), st[r -- _type] .type ≤ ty0, junkref(str, r, st[r0 -- i ', refval(r1)]), r1 = jvmref → is_reftype(ty) ⊦ r0 = jvmref, r = jvmref, junkref(str, r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ ¬ junkref(str, r, st) ∧ validref(str, r1, ty, st) ∧ mkarraytype(ty) ≤ st[r0 -- _type] .type ∧ r0 ≠ jvmref ∧ is_arraytype(st[r0 -- _type] .type) ∧ (r1 = jvmref → is_reftype(ty)) → ¬ junkref(str, r, st[r0 -- i ', refval(r1)])

Rule argument

[crewrite-arg: junkref-put-refval-01 , F , [str, r, st, r1, ty, r0, i] → [str, r, st, r1, ty, r0, i] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (str, r, st, r1, ty, r0, i)]]