This is what GDB says:
#0  0x00007ffff2c3119f in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#1  0x00007fff30f4a683 in c10::RegisterOperators::inferSchemaFromKernels_(std::string const&, c10::RegisterOperators::Options const&) ()
   from /home/zh217/.pyenv/versions/3.7.0/lib/python3.7/site-packages/torch/lib/libtorch.so
#2  0x00007fff30f4b0ca in c10::RegisterOperators::checkSchemaAndRegisterOp_(std::string const&, c10::RegisterOperators::Options&&) ()
   from /home/zh217/.pyenv/versions/3.7.0/lib/python3.7/site-packages/torch/lib/libtorch.so
#3  0x00007fffe409919c in c10::RegisterOperators::op(std::string const&, c10::RegisterOperators::Options&&) && (this=0x7fffffffce60, schemaOrName="infictc::make_lattice",
    options=...) at /home/zh217/libtorch-1.2-cuda10/libtorch/include/ATen/core/op_registration/op_registration.h:366
#4  0x00007fffe409da0f in c10::RegisterOperators::op<std::vector<at::Tensor, std::allocator<at::Tensor> > (at::Tensor const&, at::Tensor const&, at::Tensor const&, at::Tensor const&, double)>(std::string const&, std::vector<at::Tensor, std::allocator<at::Tensor> > (*)(at::Tensor const&, at::Tensor const&, at::Tensor const&, at::Tensor const&, double), c10::RegisterOperators::Options&&) && (this=0x7fffffffce60, schemaOrName="infictc::make_lattice", func=
    0x7fffe4071560 <infictc::make_lattice(at::Tensor const&, at::Tensor const&, at::Tensor const&, at::Tensor const&, double)>, options=...)
    at /home/zh217/libtorch-1.2-cuda10/libtorch/include/ATen/core/op_registration/op_registration.h:420
#5  0x00007fffe409b5fc in c10::RegisterOperators::RegisterOperators<std::vector<at::Tensor, std::allocator<at::Tensor> > (*)(at::Tensor const&, at::Tensor const&, at::Tensor const&, at::Tensor const&, double)> (this=0x7fffffffce60, schemaOrName="infictc::make_lattice",
    func=@0x7fffffffce30: 0x7fffe4071560 <infictc::make_lattice(at::Tensor const&, at::Tensor const&, at::Tensor const&, at::Tensor const&, double)>, options=...)
    at /home/zh217/libtorch-1.2-cuda10/libtorch/include/ATen/core/op_registration/op_registration.h:379
#6  0x00007fffe4095fc2 in __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at /tmp/tmp.EOjruwuXRl/infictc/pytorch_export.cpp:8
#7  0x00007fffe4096471 in _GLOBAL__sub_I_pytorch_export.cpp(void) () at /tmp/tmp.EOjruwuXRl/infictc/pytorch_export.cpp:13
#8  0x00007ffff7de5733 in call_init (env=0x555555bac1f0, argv=0x7fffffffe168, argc=3, l=<optimized out>) at dl-init.c:72
#9  _dl_init (main_map=main_map@entry=0x555555b052e0, argc=3, argv=0x7fffffffe168, env=0x555555bac1f0) at dl-init.c:119
#10 0x00007ffff7dea1ff in dl_open_worker (a=a@entry=0x7fffffffd210) at dl-open.c:522
#11 0x00007ffff71872df in __GI__dl_catch_exception (exception=0x7fffffffd1f0, operate=0x7ffff7de9dc0 <dl_open_worker>, args=0x7fffffffd210) at dl-error-skeleton.c:196
#12 0x00007ffff7de97ca in _dl_open (file=0x7ffff6aa8b90 "/usr/local/lib/libinfictc.so.0.0.1", mode=-2147483646, caller_dlopen=0x7fff7d284698 <py_dl_open+136>,
    nsid=<optimized out>, argc=3, argv=<optimized out>, env=0x555555bac1f0) at dl-open.c:605
#13 0x00007ffff79b2f96 in dlopen_doit (a=a@entry=0x7fffffffd440) at dlopen.c:66
#14 0x00007ffff71872df in __GI__dl_catch_exception (exception=exception@entry=0x7fffffffd3e0, operate=0x7ffff79b2f40 <dlopen_doit>, args=0x7fffffffd440)
    at dl-error-skeleton.c:196
#15 0x00007ffff718736f in __GI__dl_catch_error (objname=0x555555b5bd80, errstring=0x555555b5bd88, mallocedp=0x555555b5bd78, operate=<optimized out>, args=<optimized out>)
    at dl-error-skeleton.c:215
#16 0x00007ffff79b3735 in _dlerror_run (operate=operate@entry=0x7ffff79b2f40 <dlopen_doit>, args=args@entry=0x7fffffffd440) at dlerror.c:162
#17 0x00007ffff79b3051 in __dlopen (file=<optimized out>, mode=<optimized out>) at dlopen.c:87
#18 0x00007fff7d284698 in py_dl_open (self=self@entry=0x7fff7d4bc368, args=args@entry=0x7ffff6de8448)
    at /tmp/python-build.20181217100434.36047/Python-3.7.0/Modules/_ctypes/callproc.c:1336
#19 0x00005555555ca1c6 in _PyMethodDef_RawFastCallKeywords (kwnames=0x0, nargs=0, args=0x9, self=0x7fff7d4bc368, method=<optimized out>) at Objects/call.c:694
#20 _PyCFunction_FastCallKeywords (func=0x7fff7d4b40d8, args=args@entry=0x7fff7dadc3f0, nargs=nargs@entry=2, kwnames=kwnames@entry=0x0) at Objects/call.c:730
#21 0x00005555555b832e in call_function (kwnames=0x0, oparg=2, pp_stack=<synthetic pointer>) at Python/ceval.c:4547
#22 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3117
#23 0x00005555556884ea in PyEval_EvalFrameEx (throwflag=0, f=0x7fff7dadc238) at Python/ceval.c:547
#24 _PyEval_EvalCodeWithName (_co=_co@entry=0x7fff7d49b780, globals=globals@entry=0x7fff7daa2a68, locals=locals@entry=0x0, args=args@entry=0x7fffffffd7e0, argcount=2,
    kwnames=kwnames@entry=0x0, kwargs=0x0, kwcount=0, kwstep=2, defs=0x7fff7d4c5dd0, defcount=4, kwdefs=0x0, closure=0x0, name=0x7ffff6e70270, qualname=0x7fff7d4adc30)
    at Python/ceval.c:3923
#25 0x00005555555c97ef in _PyFunction_FastCallDict (func=0x7fff7d4c3510, args=0x7fffffffd7e0, nargs=<optimized out>, kwargs=0x0) at Objects/call.c:376
#26 0x00005555555cc911 in _PyObject_FastCallDict (kwargs=0x0, nargs=2, args=0x7fffffffd7e0, callable=0x7fff7d4c3510) at Objects/call.c:98
#27 _PyObject_Call_Prepend (callable=callable@entry=0x7fff7d4c3510, obj=obj@entry=0x7ffff6a8aa20, args=args@entry=0x7ffff6e54198, kwargs=kwargs@entry=0x0)
    at Objects/call.c:904