Hi Mr. Vitaly,
The exported project is not allowed to sent. For the same design, I can populate the tbcoverage-0.json in my another machine. I can find out that the following messages are missing in the debug.txt which may be the reason why tbcoverage-0.json is empty:
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Could not load [heap]
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Could not load [stack]
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Could not load [vvar]
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Could not load [vdso]
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Could not load [vsyscall]
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Dumping modules
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /home/s2e/bubble.exe - entry_point=0x18c00 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x558135733000 Size=0x00140000 Offset=0x00000000 Perms=0x05 Name=/home/s2e/bubble.exe
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x558135a72000 Size=0x00009000 Offset=0x0013f000 Perms=0x05 Name=/home/s2e/bubble.exe
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x558135a7b000 Size=0x00004000 Offset=0x00148000 Perms=0x07 Name=/home/s2e/bubble.exe
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /lib/x86_64-linux-gnu/libz.so.1.2.8 - entry_point=0x21c0 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233c9a0000 Size=0x00019000 Offset=0x00000000 Perms=0x05 Name=/lib/x86_64-linux-gnu/libz.so.1.2.8
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233cbb8000 Size=0x00001000 Offset=0x00018000 Perms=0x05 Name=/lib/x86_64-linux-gnu/libz.so.1.2.8
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233cbb9000 Size=0x00001000 Offset=0x00019000 Perms=0x07 Name=/lib/x86_64-linux-gnu/libz.so.1.2.8
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /usr/lib/x86_64-linux-gnu/
libelf-0.168.so - entry_point=0x2f90 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233cbba000 Size=0x00017000 Offset=0x00000000 Perms=0x05 Name=/usr/lib/x86_64-linux-gnu/
libelf-0.168.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233cdd0000 Size=0x00001000 Offset=0x00016000 Perms=0x05 Name=/usr/lib/x86_64-linux-gnu/
libelf-0.168.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233cdd1000 Size=0x00001000 Offset=0x00017000 Perms=0x07 Name=/usr/lib/x86_64-linux-gnu/
libelf-0.168.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /lib/x86_64-linux-gnu/
libdl-2.24.so - entry_point=0xd80 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233cdd2000 Size=0x00003000 Offset=0x00000000 Perms=0x05 Name=/lib/x86_64-linux-gnu/
libdl-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233cfd4000 Size=0x00001000 Offset=0x00002000 Perms=0x05 Name=/lib/x86_64-linux-gnu/
libdl-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233cfd5000 Size=0x00001000 Offset=0x00003000 Perms=0x07 Name=/lib/x86_64-linux-gnu/
libdl-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /lib/x86_64-linux-gnu/
libc-2.24.so - entry_point=0x20400 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233cfd6000 Size=0x00195000 Offset=0x00000000 Perms=0x05 Name=/lib/x86_64-linux-gnu/
libc-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233d36b000 Size=0x00004000 Offset=0x00195000 Perms=0x05 Name=/lib/x86_64-linux-gnu/
libc-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233d36f000 Size=0x00002000 Offset=0x00199000 Perms=0x07 Name=/lib/x86_64-linux-gnu/
libc-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /lib/x86_64-linux-gnu/libgcc_s.so.1 - entry_point=0x2a90 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233d375000 Size=0x00016000 Offset=0x00000000 Perms=0x05 Name=/lib/x86_64-linux-gnu/libgcc_s.so.1
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233d58a000 Size=0x00001000 Offset=0x00015000 Perms=0x05 Name=/lib/x86_64-linux-gnu/libgcc_s.so.1
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233d58b000 Size=0x00001000 Offset=0x00016000 Perms=0x07 Name=/lib/x86_64-linux-gnu/libgcc_s.so.1
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /lib/x86_64-linux-gnu/
libm-2.24.so - entry_point=0x5680 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233d58c000 Size=0x00103000 Offset=0x00000000 Perms=0x05 Name=/lib/x86_64-linux-gnu/
libm-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233d88e000 Size=0x00001000 Offset=0x00102000 Perms=0x05 Name=/lib/x86_64-linux-gnu/
libm-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233d88f000 Size=0x00001000 Offset=0x00103000 Perms=0x07 Name=/lib/x86_64-linux-gnu/
libm-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22 - entry_point=0x8b7e0 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233d890000 Size=0x00172000 Offset=0x00000000 Perms=0x05 Name=/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233dc02000 Size=0x0000a000 Offset=0x00172000 Perms=0x05 Name=/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233dc0c000 Size=0x00002000 Offset=0x0017c000 Perms=0x07 Name=/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /home/s2e/guest-tools64/s2e.so - entry_point=0x1e80 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233dc12000 Size=0x00007000 Offset=0x00000000 Perms=0x05 Name=/home/s2e/guest-tools64/s2e.so
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233de18000 Size=0x00001000 Offset=0x00006000 Perms=0x05 Name=/home/s2e/guest-tools64/s2e.so
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233de19000 Size=0x00001000 Offset=0x00007000 Perms=0x07 Name=/home/s2e/guest-tools64/s2e.so
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Module /lib/x86_64-linux-gnu/
ld-2.24.so - entry_point=0xc20 loadable_phdr_num=2
21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233de1a000 Size=0x00023000 Offset=0x00000000 Perms=0x05 Name=/lib/x86_64-linux-gnu/
ld-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233e03d000 Size=0x00001000 Offset=0x00023000 Perms=0x05 Name=/lib/x86_64-linux-gnu/
ld-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba020): Base=0x7f233e03e000 Size=0x00001000 Offset=0x00024000 Perms=0x07 Name=/lib/x86_64-linux-gnu/
ld-2.24.so21 [State 0] BaseInstructions: Message from guest (0x7ffce39ba060): Skipping /home/s2e/bubble.exe, because it was already notified by the kernel
21 [State 0] LinuxMonitor: ModuleDescriptor Name=libz.so.1.2.8 Path=/lib/x86_64-linux-gnu/libz.so.1.2.8 Size=0x18db4 AddressSpace=0xda62000 Pid=0x4f7 EntryPoint=0x7f233c9a21c0 Checksum=0x0
21 [State 0] LinuxMonitor: ModuleDescriptor Name=
libelf-0.168.so Path=/usr/lib/x86_64-linux-gnu/
libelf-0.168.so Size=0x16ef0 AddressSpace=0xda62000 Pid=0x4f7 EntryPoint=0x7f233cbbcf90 Checksum=0x0
21 [State 0] LinuxMonitor: ModuleDescriptor Name=
libdl-2.24.so Path=/lib/x86_64-linux-gnu/
libdl-2.24.so Size=0x2314 AddressSpace=0xda62000 Pid=0x4f7 EntryPoint=0x7f233cdd2d80 Checksum=0x0
21 [State 0] LinuxMonitor: ModuleDescriptor Name=
libc-2.24.so Path=/lib/x86_64-linux-gnu/
libc-2.24.so Size=0x199998 AddressSpace=0xda62000 Pid=0x4f7 EntryPoint=0x7f233cff6400 Checksum=0x0
21 [State 0] LinuxMonitor: ModuleDescriptor Name=libgcc_s.so.1 Path=/lib/x86_64-linux-gnu/libgcc_s.so.1 Size=0x1564c AddressSpace=0xda62000 Pid=0x4f7 EntryPoint=0x7f233d377a90 Checksum=0x0
21 [State 0] LinuxMonitor: ModuleDescriptor Name=
libm-2.24.so Path=/lib/x86_64-linux-gnu/
libm-2.24.so Size=0x10302c AddressSpace=0xda62000 Pid=0x4f7 EntryPoint=0x7f233d591680 Checksum=0x0
21 [State 0] LinuxMonitor: ModuleDescriptor Name=libstdc++.so.6.0.22 Path=/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22 Size=0x17cd76 AddressSpace=0xda62000 Pid=0x4f7 EntryPoint=0x7f233d91b7e0 Checksum=0x0
I am attaching the debug.txt. Please let me know what can be the probable reasons for this.