def METHOD_NAME():
    sch = tir.Schedule(elementwise, debug_mask="all")
    i, _, _ = sch.get_loops(sch.get_block("B"))
    factors = sch.sample_perfect_tile(i, n=4)
    factors = [sch.get(i) for i in factors]
    prod = factors[0] * factors[1] * factors[2] * factors[3]
    assert prod == 128
    verify_trace_roundtrip(sch, mod=elementwise)