=== 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: ./Castro3d.gnu.DEBUG.MPI.ex(+0x23929a) [0x5623e4e3129a]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:163:29

 1: ./Castro3d.gnu.DEBUG.MPI.ex(+0x238ee4) [0x5623e4e30ee4]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: ./Castro3d.gnu.DEBUG.MPI.ex(+0x106d41) [0x5623e4cfed41]
    amrex::ParallelDescriptor::Abort(int, bool)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_ParallelDescriptor.cpp:224:22

 3: ./Castro3d.gnu.DEBUG.MPI.ex(+0xb8419) [0x5623e4cb0419]
    amrex::Assert(char const*, char const*, int, char const*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.cpp:284:1

 4: ./Castro3d.gnu.DEBUG.MPI.ex(+0x75a50) [0x5623e4c6da50]
    Castro::print_source_change(amrex::Vector<double, std::allocator<double> >)
/raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:352:38

 5: ./Castro3d.gnu.DEBUG.MPI.ex(+0x75e37) [0x5623e4c6de37]
    Castro::print_all_source_changes(double, bool)
/raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:398:26

 6: ./Castro3d.gnu.DEBUG.MPI.ex(+0x75147) [0x5623e4c6d147]
    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: ./Castro3d.gnu.DEBUG.MPI.ex(+0x43b15) [0x5623e4c3bb15]
    Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:96:28

 8: ./Castro3d.gnu.DEBUG.MPI.ex(+0x44e50) [0x5623e4c3ce50]
    Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:482:56

 9: ./Castro3d.gnu.DEBUG.MPI.ex(+0x410bb) [0x5623e4c390bb]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:55

10: ./Castro3d.gnu.DEBUG.MPI.ex(+0x2d12e7) [0x5623e4ec92e7]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2112:44

11: ./Castro3d.gnu.DEBUG.MPI.ex(+0x2d1b27) [0x5623e4ec9b27]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:26

12: ./Castro3d.gnu.DEBUG.MPI.ex(+0x5dd17) [0x5623e4c55d17]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:5

13: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f5879c501a3]
    __libc_start_main
??:0

14: ./Castro3d.gnu.DEBUG.MPI.ex(+0x157be) [0x5623e4c0d7be]
    _start
??:0