Memory not freed:
-----------------
   Address     Size     Caller
0x09072398    0x160  at 0x1adc4f
0x09072948      0x6  at AndreaSterbini/modulo1.c:194
0x09072958      0x7  at AndreaSterbini/modulo1.c:203
0x09072968      0x6  at AndreaSterbini/modulo1.c:194
0x09072978      0x9  at AndreaSterbini/modulo1.c:203
0x09077380    0x160  at 0x1adc4f