Memory not freed:
-----------------
   Address     Size     Caller
0x0873a378    0xfac  at ../../../AndreaSterbini/modulo3.c:17
0x0873a388      0x4  at ../tests-SimoneMurzilli.c:485
0x0873a398    0xfac  at ../../../AndreaSterbini/modulo3.c:17
0x0873b330    0xfac  at ../../../AndreaSterbini/modulo3.c:17
0x0873b350    0x3e8  at ../tests-SimoneMurzilli.c:490
0x0873b358      0x5  at 0x1c39f0
0x0873b740   0x1f40  at ../tests-SimoneMurzilli.c:494
0x0873c300      0x5  at 0x1c39f0