=== 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(+0x347c68) [0x559cbe79fc68]
    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(+0x3478b2) [0x559cbe79f8b2]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: ./Castro2d.gnu.DEBUG.MPI.ex(+0x227089) [0x559cbe67f089]
    amrex::ParallelDescriptor::Abort(int, bool)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_ParallelDescriptor.cpp:230:22

 3: ./Castro2d.gnu.DEBUG.MPI.ex(+0x1daf11) [0x559cbe632f11]
    amrex::detail::Assert_host_doit(char const*, char const*, int, char const*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.cpp:247:1

 4: ./Castro2d.gnu.DEBUG.MPI.ex(+0x27144) [0x559cbe47f144]
    amrex::Assert(char const*, char const*, int, char const*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.H:148:5

 5: ./Castro2d.gnu.DEBUG.MPI.ex(+0x4066fa) [0x559cbe85e6fa]
    amrex::StateDescriptor::BndryFunc::operator()(double*, int const*, int const*, int const*, int const*, double const*, double const*, double const*, int const*, int) const
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_StateDescriptor.cpp:73:40

 6: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3fd744) [0x559cbe855744]
    amrex::StateData::FillBoundary(amrex::FArrayBox&, double, double const*, amrex::RealBox const&, int, int, int)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_StateData.cpp:492:22

 7: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3dce41) [0x559cbe834e41]
    amrex::AmrLevel::setPhysBoundaryValues(amrex::FArrayBox&, int, double, int, int, int)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_AmrLevel.cpp:615:35

 8: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3e1ccf) [0x559cbe839ccf]
    amrex::FillPatchIteratorHelper::fill(amrex::FArrayBox&, int, int)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_AmrLevel.cpp:1457:9

 9: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3df45f) [0x559cbe83745f]
    amrex::FillPatchIterator::Initialize(int, double, int, int, int)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_AmrLevel.cpp:1029:43

10: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3dd36d) [0x559cbe83536d]
    amrex::FillPatchIterator::FillPatchIterator(amrex::AmrLevel&, amrex::MultiFab&, int, double, int, int, int)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_AmrLevel.cpp:680:1

11: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3e644d) [0x559cbe83e44d]
    amrex::AmrLevel::FillPatch(amrex::AmrLevel&, amrex::MultiFab&, int, double, int, int, int, int)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_AmrLevel.cpp:2185:82

12: ./Castro2d.gnu.DEBUG.MPI.ex(+0x25d7e) [0x559cbe47dd7e]
    Castro::expand_state(amrex::MultiFab&, double, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro.cpp:3762:22

13: ./Castro2d.gnu.DEBUG.MPI.ex(+0x43bbd) [0x559cbe49bbbd]
    Castro::initialize_do_advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:174:49

14: ./Castro2d.gnu.DEBUG.MPI.ex(+0x5cd54) [0x559cbe4b4d54]
    Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:41:29

15: ./Castro2d.gnu.DEBUG.MPI.ex(+0x5e385) [0x559cbe4b6385]
    Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:543:45

16: ./Castro2d.gnu.DEBUG.MPI.ex(+0x43808) [0x559cbe49b808]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:55

17: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3cd538) [0x559cbe825538]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2112:44

18: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3cd9f1) [0x559cbe8259f1]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2173:13

19: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3cd9f1) [0x559cbe8259f1]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2173:13

20: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3cdd90) [0x559cbe825d90]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:26

21: ./Castro2d.gnu.DEBUG.MPI.ex(+0x75991) [0x559cbe4cd991]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:5

22: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f27d0bff1a3]
    __libc_start_main
??:0

23: ./Castro2d.gnu.DEBUG.MPI.ex(+0x14cde) [0x559cbe46ccde]
    _start
??:0