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Proof step 4 from proof isarray-okarray-01 (previous step)

st[r -- _type] = typeval(ty1), ty1 = mkarraytype(ty0), is_typevalue(st[r -- _type]), r -- _type ∈ st, ty0 ≤ ty, r ∈ st, okarray(r, ty0, st) ⊦ r = jvmref, okarray(r, ty, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
⊦ okarray(r, ty, st) ∧ ty ≤ ty0 → okarray(r, ty0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]