Function foo

    line 1492
    FAILED to compute RF
      line 277
      FAILED to compute RF
        line 93
        FAILED to compute RF
          line 88
          FAILED to compute RF
        line 734
        FAILED to compute RF
          line 729
          FAILED to compute RF
        line 1316
        FAILED to compute RF
          line 1311
          FAILED to compute RF
        line 1243
        FAILED to compute RF
          line 909
          FAILED to compute RF
        line 426
        FAILED to compute RF
        line 1402
        FAILED to compute RF
          line 1984
          FAILED to compute RF
    line 1825
    FAILED to compute RF
      line 1552
      FAILED to compute RF
    line 1898
    FAILED to compute RF
      line 1893
      FAILED to compute RF
    line 2085
    FAILED to compute RF
      line 2081
      FAILED to compute RF