=== 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.DEBUG.MPI.ex(+0x247ba6) [0x557429b75ba6]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:163:29

 1: ./Castro2d.gnu.DEBUG.MPI.ex(+0x2477f0) [0x557429b757f0]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: ./Castro2d.gnu.DEBUG.MPI.ex(+0x13141f) [0x557429a5f41f]
    amrex::ParallelDescriptor::Abort(int, bool)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_ParallelDescriptor.cpp:224:22

 3: ./Castro2d.gnu.DEBUG.MPI.ex(+0xe3315) [0x557429a11315]
    amrex::Assert(char const*, char const*, int, char const*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.cpp:284:1

 4: ./Castro2d.gnu.DEBUG.MPI.ex(+0x9a992) [0x5574299c8992]
    Castro::print_source_change(amrex::Vector<double, std::allocator<double> >)
/raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:352:38

 5: ./Castro2d.gnu.DEBUG.MPI.ex(+0x9ad25) [0x5574299c8d25]
    Castro::print_all_source_changes(double, bool)
/raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:398:26

 6: ./Castro2d.gnu.DEBUG.MPI.ex(+0x9a0df) [0x5574299c80df]
    Castro::do_old_sources(amrex::MultiFab&, amrex::MultiFab&, double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:118:17

 7: ./Castro2d.gnu.DEBUG.MPI.ex(+0x47cc2) [0x557429975cc2]
    Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:96:28

 8: ./Castro2d.gnu.DEBUG.MPI.ex(+0x495a4) [0x5574299775a4]
    Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:482:56

 9: ./Castro2d.gnu.DEBUG.MPI.ex(+0x44d7b) [0x557429972d7b]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:55

10: ./Castro2d.gnu.DEBUG.MPI.ex(+0x2c6f95) [0x557429bf4f95]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2112:44

11: ./Castro2d.gnu.DEBUG.MPI.ex(+0x2c77d5) [0x557429bf57d5]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:26

12: ./Castro2d.gnu.DEBUG.MPI.ex(+0x6503b) [0x55742999303b]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:5

13: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f841aa101a3]
    __libc_start_main
??:0

14: ./Castro2d.gnu.DEBUG.MPI.ex(+0x1681e) [0x55742994481e]
    _start
??:0