=== 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(+0x14cc45) [0x55e9e1cedc45]
    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(+0x14eac3) [0x55e9e1cefac3]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: /lib64/libc.so.6(+0x3c6b0) [0x7fbd0e4306b0]
    __restore_rt
??:0

 3: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x2682a0) [0x55e9e1e092a0]
    ca_fourth_single_stage
/raid/testing/castro-gfortran/Castro//Source/hydro/Castro_fourth_order.F90:780

 4: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x68e5a) [0x55e9e1c09e5a]
    Castro::construct_mol_hydro_source(double, double, amrex::MultiFab&)
/raid/testing/castro-gfortran/Castro//Source/hydro/Castro_mol_hydro.cpp:102:13

 5: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x3ec3f) [0x55e9e1bdfc3f]
    Castro::do_advance_sdc(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_sdc.cpp:181:28

 6: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x3b0a0) [0x55e9e1bdc0a0]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:61:42

 7: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x1995d4) [0x55e9e1d3a5d4]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2121:36

 8: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x18ccea) [0x55e9e1d2dcea]
    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

 9: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x1f316) [0x55e9e1bc0316]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:33

10: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7fbd0e41b1a3]
    __libc_start_main
??:0

11: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x23a8e) [0x55e9e1bc4a8e]
    _start
??:0