=== If no file names and line numbers are shown below, one can run
            addr2line -Cpfie my_exefile my_line_address
    to convert `my_line_address` (e.g., 0x4a6b) into file name and line number.
    Or one can use amrex/Tools/Backtrace/parse_bt.py.

=== Please note that the line number reported by addr2line may not be accurate.
    One can use
            readelf -wl my_exefile | grep my_line_address'
    to find out the offset for that line.

 0: ./Castro2d.gnu.TEST.MPI.ex(+0x17f325) [0x562b8fc51325]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:167:39

 1: ./Castro2d.gnu.TEST.MPI.ex(+0x1811a3) [0x562b8fc531a3]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: /lib64/libc.so.6(+0x3c6b0) [0x7f4e0d2b66b0]
    __restore_rt
??:0

 3: /lib64/libc.so.6(gsignal+0x145) [0x7f4e0d2b6625]
    raise
??:0

 4: /lib64/libc.so.6(abort+0x12b) [0x7f4e0d29f8d9]
    abort
??:0

 5: /lib64/libc.so.6(+0x804af) [0x7f4e0d2fa4af]
    __libc_message
??:0

 6: /lib64/libc.so.6(+0x87a9c) [0x7f4e0d301a9c]
    .annobin_top_check.start
??:0

 7: /lib64/libc.so.6(+0x8992c) [0x7f4e0d30392c]
    _int_free
??:0

 8: ./Castro2d.gnu.TEST.MPI.ex(+0x6794f) [0x562b8fb3994f]
    amrex::BaseFab<double>::clear()
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BaseFab.H:1598:26

 9: ./Castro2d.gnu.TEST.MPI.ex(+0x6ebf4) [0x562b8fb40bf4]
    amrex::BaseFab<double>::~BaseFab() inlined at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_FArrayBox.H:242:28 in Castro::construct_ctu_hydro_source(double, double)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BaseFab.H:1497:5
amrex::FArrayBox::~FArrayBox()
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_FArrayBox.H:242:28
Castro::construct_ctu_hydro_source(double, double)
/raid/testing/castro-gfortran/Castro//Source/hydro/Castro_ctu_hydro.cpp:102:54

10: ./Castro2d.gnu.TEST.MPI.ex(+0x4897b) [0x562b8fb1a97b]
    Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:131:28

11: ./Castro2d.gnu.TEST.MPI.ex(+0x49fe0) [0x562b8fb1bfe0]
    Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:521:45

12: ./Castro2d.gnu.TEST.MPI.ex(+0x480c2) [0x562b8fb1a0c2]
    double const& std::min<double>(double const&, double const&) inlined at /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:92 in Castro::advance(double, double, int, int)
/usr/include/c++/9/bits/stl_algobase.h:205:14
Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:92

13: ./Castro2d.gnu.TEST.MPI.ex(+0x1cc804) [0x562b8fc9e804]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2121:36

14: ./Castro2d.gnu.TEST.MPI.ex(+0x1bff1a) [0x562b8fc91f1a]
    std::vector<double, std::allocator<double> >::operator[](unsigned long) inlined at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_Vector.H:33:54 in amrex::Amr::coarseTimeStep(double)
/usr/include/c++/9/bits/stl_vector.h:1042:2
amrex::Vector<double, std::allocator<double> >::operator[](unsigned long)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_Vector.H:33:54
amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:26

15: ./Castro2d.gnu.TEST.MPI.ex(+0x27be6) [0x562b8faf9be6]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:152:33

16: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f4e0d2a11a3]
    __libc_start_main
??:0

17: ./Castro2d.gnu.TEST.MPI.ex(+0x2d0de) [0x562b8faff0de]
    _start
??:0