=== 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: ./main3d.gnu.TEST.OMP.ex() [0x4cca96]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/microphysics-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:167:39

 1: ./main3d.gnu.TEST.OMP.ex() [0x4ce6bd]
    amrex::BLBackTrace::handler(int)
/raid/testing/microphysics-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: ./main3d.gnu.TEST.OMP.ex() [0x4f138b]
    __amrex_error_module_MOD_amrex_error0
/raid/testing/microphysics-gfortran/amrex//Src/Base/AMReX_error_mod.F90:42

 3: ./main3d.gnu.TEST.OMP.ex() [0x4d67b2]
    __util_module_MOD_get_xn
/raid/testing/microphysics-gfortran/Microphysics/unit_test/test_react/util.f90:44

 4: ./main3d.gnu.TEST.OMP.ex() [0x4d8c6a]
    init_state
/raid/testing/microphysics-gfortran/Microphysics/unit_test/test_react/react_zones.F90:46

 5: ./main3d.gnu.TEST.OMP.ex() [0x413ce5]
    main_main()
/raid/testing/microphysics-gfortran/Microphysics/unit_test/test_react/main.cpp:139:45

 6: ./main3d.gnu.TEST.OMP.ex() [0x410e1b]
    main
/raid/testing/microphysics-gfortran/Microphysics/unit_test/test_react/main.cpp:24:20

 7: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f987d3511a3]
    __libc_start_main
??:0

 8: ./main3d.gnu.TEST.OMP.ex() [0x412fbe]
    _start
??:0