=== 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(+0x1ae8f5) [0x56396cbb08f5]
    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(+0x1b0773) [0x56396cbb2773]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: /lib64/libc.so.6(+0x3c6b0) [0x7faa5c5636b0]
    __restore_rt
??:0

 3: ./Castro2d.gnu.TEST.MPI.ex(+0x7b092) [0x56396ca7d092]
    Castro::ctoprim(amrex::Box const&, double, amrex::Array4<double const>, amrex::Array4<double>, amrex::Array4<double>)
/raid/testing/castro-gfortran/Castro//Source/hydro/advection_util.cpp:53:3

 4: ./Castro2d.gnu.TEST.MPI.ex(+0x764a2) [0x56396ca784a2]
    Castro::cons_to_prim(double)
/raid/testing/castro-gfortran/Castro//Source/hydro/Castro_hydro.cpp:64:62

 5: ./Castro2d.gnu.TEST.MPI.ex(+0x594e5) [0x56396ca5b4e5]
    Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:124:30

 6: ./Castro2d.gnu.TEST.MPI.ex(+0x5ac00) [0x56396ca5cc00]
    Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:521:45

 7: ./Castro2d.gnu.TEST.MPI.ex(+0x58c12) [0x56396ca5ac12]
    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

 8: ./Castro2d.gnu.TEST.MPI.ex(+0x1fd7b0) [0x56396cbff7b0]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2121:36

 9: ./Castro2d.gnu.TEST.MPI.ex(+0x1f06dd) [0x56396cbf26dd]
    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

10: ./Castro2d.gnu.TEST.MPI.ex(+0x29b86) [0x56396ca2bb86]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:33

11: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7faa5c54e1a3]
    __libc_start_main
??:0

12: ./Castro2d.gnu.TEST.MPI.ex(+0x347be) [0x56396ca367be]
    _start
??:0