Function foo

    line 8
    FAILED to compute RF
      line 26
      FAILED to compute RF
        line 26
        FAILED to compute RF
      line 91
      FAILED to compute RF
      line 73
      FAILED to compute RF
      line 132
      FAILED to compute RF
        line 132
        FAILED to compute RF
        line 184
        FAILED to compute RF
        line 168
        FAILED to compute RF