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Proof step 4 from proof validref-array-03 (previous step)

is_array(str0, r, st), validref(str0, r, mkclasstype(str .class), st) ⊦ str = `java.lang.Object'

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 3:
is_array(str0, r, st), r = jvmref ∨ st[r -- _type] .type ≤ mkclasstype(str .class) ∧ ¬ junkref(str0, r, st) ⊦ str = `java.lang.Object'

Rule argument

[crewrite-arg: validref-def , F , [st, ty, r, str] → [st, mkclasstype(str .class), r, str0] ]

Additional information

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