Attempt to reproduce firrtl-interpreter width error

WidthProblem.scala

// See README.md for license details.

package firrtl_interpreter

import firrtl.CommonOptions
import org.scalatest.{FreeSpec, Matchers}

class WidthProblemSpec extends FreeSpec with Matchers {
  "should get width right" in {
    val input =
      """
        |circuit Deep_1 :
        |  module Deep_1 :
        |    input clock : Clock
        |    input reset : UInt<1>
        |
        |    input data : SInt<8>[4]
        |    input const_data : SInt<8>[4]
        |    output output : SInt<8>[4]
        |    output uout : SInt<9>
        |
        |    wire inputData : SInt<8>[4]
        |    wire constInputData : SInt<8>[4]
        |    reg outputData : SInt<8>[4] clock
        |
        |    inputData[0] <= SInt<8>(0)
        |    inputData[1] <= SInt<8>(0)
        |    inputData[3] <= SInt<8>(0)
        |
        |    constInputData[0] <= SInt<8>(0)
        |    constInputData[1] <= SInt<8>(0)
        |    constInputData[3] <= SInt<8>(0)
        |
        |    outputData[0] <= SInt<8>(0)
        |    outputData[1] <= SInt<8>(0)
        |    outputData[3] <= SInt<8>(0)
        |
        |    output[0] <= SInt<8>(0)
        |    output[1] <= SInt<8>(0)
        |    output[3] <= SInt<8>(0)
        |
        |    inputData[2] <= data[2]
        |    constInputData[2] <= const_data[2]
        |    node _T_209 = add(inputData[2], constInputData[2])
        |    uout <= _T_209
        |    node _T_210 = tail(_T_209, 1)
        |    node _T_211 = asSInt(_T_210)
        |    outputData[2] <= _T_211
        |    output[2] <= outputData[2]
        |""".stripMargin

    val optionsManager = new InterpreterOptionsManager {
      interpreterOptions = InterpreterOptions(showFirrtlAtLoad = true, setVerbose = true)
      commonOptions = CommonOptions(targetDirName = "test_run_dir")
    }

    val tester = new InterpretiveTester(input, optionsManager)

    tester.poke("data_2", 150)
    tester.poke("const_data_2", 153)
    tester.step()
    println(s"uout ${tester.peek("uout")} -209 poked values end up being -106 -103")
    println(s"output_2 ${tester.peek("output_2")} expecting 47 -209 with top bit lopped off")
    tester.finish
  }
}