=== 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.OMP.ex(+0x240fac) [0x56516c801fac]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:163:29

 1: ./Castro3d.gnu.DEBUG.MPI.OMP.ex(+0x240bf6) [0x56516c801bf6]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: ./Castro3d.gnu.DEBUG.MPI.OMP.ex(+0x1090a9) [0x56516c6ca0a9]
    amrex::ParallelDescriptor::Abort(int, bool)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_ParallelDescriptor.cpp:224:22

 3: ./Castro3d.gnu.DEBUG.MPI.OMP.ex(+0xba441) [0x56516c67b441]
    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.OMP.ex(+0x75c76) [0x56516c636c76]
    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.OMP.ex(+0x7605d) [0x56516c63705d]
    Castro::print_all_source_changes(double, bool)
/raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:398:26

 6: ./Castro3d.gnu.DEBUG.MPI.OMP.ex(+0x7542f) [0x56516c63642f]
    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.OMP.ex(+0x45011) [0x56516c606011]
    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.OMP.ex(+0x461c2) [0x56516c6071c2]
    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.OMP.ex(+0x425b7) [0x56516c6035b7]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:55

10: ./Castro3d.gnu.DEBUG.MPI.OMP.ex(+0x2da535) [0x56516c89b535]
    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.OMP.ex(+0x2dad75) [0x56516c89bd75]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:26

12: ./Castro3d.gnu.DEBUG.MPI.OMP.ex(+0x5e859) [0x56516c61f859]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:5

13: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7fe43aa851a3]
    __libc_start_main
??:0

14: ./Castro3d.gnu.DEBUG.MPI.OMP.ex(+0x1691e) [0x56516c5d791e]
    _start
??:0