error 0
 ==464== Memcheck, a memory error detector
 ==464== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
 ==464== Using Valgrind-3.15.0.GIT and LibVEX; rerun with -h for copyright info
 ==464== Command: ./try
 ==464==
 Alarm clock
 ==464==
 ==464== Process terminating with default action of signal 15 (SIGTERM)
 ==464==    at 0x4234DD: NTL::mul(NTL::GF2X&, NTL::GF2X const&, NTL::GF2X const&) (GF2X.cpp:1066)
 ==464==    by 0x40FC8A: NTL::KarMul(NTL::GF2X*, NTL::GF2X const*, long, NTL::GF2X const*, long, NTL::GF2X*) (GF2EX.cpp:563)
 ==464==    by 0x40FDF8: NTL::KarMul(NTL::GF2X*, NTL::GF2X const*, long, NTL::GF2X const*, long, NTL::GF2X*) (GF2EX.cpp:609)
 ==464==    by 0x40FDF8: NTL::KarMul(NTL::GF2X*, NTL::GF2X const*, long, NTL::GF2X const*, long, NTL::GF2X*) (GF2EX.cpp:609)
 ==464==    by 0x40FDF8: NTL::KarMul(NTL::GF2X*, NTL::GF2X const*, long, NTL::GF2X const*, long, NTL::GF2X*) (GF2EX.cpp:609)
 ==464==    by 0x40FDF8: NTL::KarMul(NTL::GF2X*, NTL::GF2X const*, long, NTL::GF2X const*, long, NTL::GF2X*) (GF2EX.cpp:609)
 ==464==    by 0x40FDBD: NTL::KarMul(NTL::GF2X*, NTL::GF2X const*, long, NTL::GF2X const*, long, NTL::GF2X*) (GF2EX.cpp:602)
 ==464==    by 0x40FDBD: NTL::KarMul(NTL::GF2X*, NTL::GF2X const*, long, NTL::GF2X const*, long, NTL::GF2X*) (GF2EX.cpp:602)
 ==464==    by 0x40FDBD: NTL::KarMul(NTL::GF2X*, NTL::GF2X const*, long, NTL::GF2X const*, long, NTL::GF2X*) (GF2EX.cpp:602)
 ==464==    by 0x40FD92: NTL::KarMul(NTL::GF2X*, NTL::GF2X const*, long, NTL::GF2X const*, long, NTL::GF2X*) (GF2EX.cpp:597)
 ==464==    by 0x40FA2F: NTL::mul(NTL::GF2EX&, NTL::GF2EX const&, NTL::GF2EX const&) (GF2EX.cpp:800)
 ==464==    by 0x412837: NTL::UseMulRem21(NTL::GF2EX&, NTL::GF2EX const&, NTL::GF2EXModulus const&) (GF2EX.cpp:1593)