=== 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.TEST.MPI.TRUESDC.ex(+0x15faf5) [0x55d45dd70af5]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:167:39

 1: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x161973) [0x55d45dd72973]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: /lib64/libc.so.6(+0x3c6b0) [0x7f0b49c7f6b0]
    __restore_rt
??:0

 3: /lib64/libc.so.6(gsignal+0x145) [0x7f0b49c7f625]
    raise
??:0

 4: /lib64/libc.so.6(abort+0x12b) [0x7f0b49c688d9]
    abort
??:0

 5: /lib64/libc.so.6(+0x804af) [0x7f0b49cc34af]
    __libc_message
??:0

 6: /lib64/libc.so.6(+0x87a9c) [0x7f0b49ccaa9c]
    .annobin_top_check.start
??:0

 7: /lib64/libc.so.6(+0x8992c) [0x7f0b49ccc92c]
    _int_free
??:0

 8: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x4363f) [0x55d45dc5463f]
    amrex::BaseFab<double>::clear()
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BaseFab.H:1598:26

 9: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x6eb9c) [0x55d45dc7fb9c]
    amrex::BaseFab<double>::~BaseFab() inlined at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_FArrayBox.H:242:28 in Castro::construct_mol_hydro_source(double, double, amrex::MultiFab&)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BaseFab.H:1497:5
amrex::FArrayBox::~FArrayBox()
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_FArrayBox.H:242:28
Castro::construct_mol_hydro_source(double, double, amrex::MultiFab&)
/raid/testing/castro-gfortran/Castro//Source/hydro/Castro_mol_hydro.cpp:64:15

10: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x40f39) [0x55d45dc51f39]
    Castro::do_advance_sdc(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_sdc.cpp:183:28

11: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x3c7c0) [0x55d45dc4d7c0]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:61:42

12: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x1ace94) [0x55d45ddbde94]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2121:36

13: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x1a05aa) [0x55d45ddb15aa]
    std::vector<double, std::allocator<double> >::operator[](unsigned long) inlined at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_Vector.H:33:54 in amrex::Amr::coarseTimeStep(double)
/usr/include/c++/9/bits/stl_vector.h:1042:2
amrex::Vector<double, std::allocator<double> >::operator[](unsigned long)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_Vector.H:33:54
amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:26

14: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x1fc56) [0x55d45dc30c56]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:152:33

15: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f0b49c6a1a3]
    __libc_start_main
??:0

16: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x2442e) [0x55d45dc3542e]
    _start
??:0