Memory not freed:
-----------------
   Address     Size     Caller
0x08b1f378    0x160  at 0x1adc4f
0x08b1f4f0      0x1  at AndreaSterbini/modulo2.c:375
0x08b1f510      0x2  at AndreaSterbini/modulo2.c:375
0x08b1f520     0x14  at AndreaSterbini/modulo2.c:375
0x08b1f538      0x5  at AndreaSterbini/modulo2.c:375