=== If no file names and line numbers are shown below, one can run
            addr2line -Cfie my_exefile my_line_address
    to convert `my_line_address` (e.g., 0x4a6b) into file name and line number.

=== 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.OMP.ex() [0x507309]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:104

 1: ./Castro2d.gnu.TEST.MPI.OMP.ex() [0x5081b6]
    amrex::BLBackTrace::handler(int)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:51

 2: ./Castro2d.gnu.TEST.MPI.OMP.ex() [0x6c3bb5]
    __initial_model_module_MOD_init_1d_tanh
    /raid/testing/castro-gfortran/Castro/Exec/science/flame_wave/initial_model.f90:191

 3: ./Castro2d.gnu.TEST.MPI.OMP.ex() [0x6cfdd4]
    amrex_probinit
    /raid/testing/castro-gfortran/Castro/Exec/science/flame_wave/Prob_2d.f90:183

 4: ./Castro2d.gnu.TEST.MPI.OMP.ex() [0x52954e]
    amrex::Amr::readProbinFile(int&)
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:1170

 5: ./Castro2d.gnu.TEST.MPI.OMP.ex() [0x529675]
    amrex::Amr::InitializeInit(double, double, amrex::BoxArray const*, amrex::Vector<int, std::allocator<int> > const*)
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:1243

 6: ./Castro2d.gnu.TEST.MPI.OMP.ex() [0x52c1f3]
    amrex::Amr::initialInit(double, double, amrex::BoxArray const*, amrex::Vector<int, std::allocator<int> > const*)
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:1221

 7: ./Castro2d.gnu.TEST.MPI.OMP.ex() [0x530a13]
    amrex::Amr::init(double, double)
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:1101

 8: ./Castro2d.gnu.TEST.MPI.OMP.ex() [0x40a883]
    main
    /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:120

 9: /lib64/libc.so.6(__libc_start_main+0xea) [0x7f001adcdf2a]
    ??
    ??:0

10: ./Castro2d.gnu.TEST.MPI.OMP.ex() [0x40f67a]
    _start
    ??:?