Memory not freed:
-----------------
   Address     Size     Caller
0x08bb14e0    0x160  at 0x1adc4f
0x08bb1678      0x4  at AndreaSterbini/modulo2.c:375
0x08bb1698      0x3  at AndreaSterbini/modulo2.c:375
0x08bb16a8      0x2  at AndreaSterbini/modulo2.c:375
0x08bb16d0      0x5  at AndreaSterbini/modulo2.c:375