example as shown in read me generate only 1 test case

[labba]

example as shown in read me generate only 1 test case

`
toor@toor-virtual-machine:~/pysymemu$ python system.py --sym stdin examples/toy002-libc

[+] Running examples/toy002-libc
with arguments: []
with environment: []
2016-08-04 03:27:18,653: EXECUTOR:INFO: Loading amd64 ELF program examples/toy002-libc

--- snipt ---

2016-08-04 03:27:18,656: MEMORY:INFO: Initializing Symbolic Memory
2016-08-04 03:27:18,656: CPU:INFO: Cpu Initialized.
2016-08-04 03:27:18,657: LINUX:INFO: Loading examples/toy002-libc as a amd64 elf
2016-08-04 03:27:18,657: LINUX:INFO: Arguments: ['examples/toy002-libc']
2016-08-04 03:27:18,747: LINUX:INFO: Setting argv, envp and auxv.
2016-08-04 03:27:18,780: LINUX:INFO: Setting initial cpu state
2016-08-04 03:27:18,780: LINUX:INFO: Entry point: 0000000000400ce0
2016-08-04 03:27:18,780: LINUX:INFO: Stack start: 00007fffffffdd78
2016-08-04 03:27:18,780: LINUX:INFO: Brk: 00000000006c6000
2016-08-04 03:27:18,780: LINUX:INFO: Mappings:
2016-08-04 03:27:18,781: LINUX:INFO: 0000000000400000-00000000004c2000 r x 00000000 examples/toy002-libc
2016-08-04 03:27:18,781: LINUX:INFO: 00000000006c1000-00000000006c3000 rw 00000000
2016-08-04 03:27:18,781: LINUX:INFO: 00000000006c3000-00000000006c6000 rw 00000000
2016-08-04 03:27:18,781: LINUX:INFO: 00007ffffffde000-00007ffffffff000 rwx 00000000
2016-08-04 03:27:18,781: LINUX:INFO: Found 10 free symbolic values on file stdin
Saving state state_0000000000400ce0_0.pkl
Starting...
Loading state state_0000000000400ce0_0.pkl
Program Finnished correctly
stdin: '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\n'
Results dumped in ./pse_i2ox9d
5892 4030.23634887
toor@toor-virtual-machine:/pysymemu$ ls pse_i2ox9d/
state_0000000000400ce0_0.pkl test_1.txt
toor@toor-virtual-machine:/pysymemu/pse_i2ox9d$ cat test_1.txt
stdin: '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\n'
toor@toor-virtual-machine:~/pysymemu$ cat stdin
++++++++
`