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Proof step 6 from proof validref-okarray (previous step)

is_arraytype(st[r -- _type] .type), st[r -- _type] .type .type ≤ ty, validref(str, r, mkarraytype(ty), st), is_array(str, r, st) ⊦ r = jvmref, okarray(r, ty, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ validref(str, r, ty, st) ↔ r = jvmref ∨ st[r -- _type] .type ≤ ty ∧ ¬ junkref(str, r, st)
Proof step 5:
is_arraytype(st[r -- _type] .type), st[r -- _type] .type .type ≤ ty, r = jvmref ∨ st[r -- _type] .type ≤ mkarraytype(ty) ∧ ¬ junkref(str, r, st), is_array(str, r, st) ⊦ r = jvmref, okarray(r, ty, st)

Rule argument

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

Additional information

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