Problems after using the NTL library

[charlie1985]

Hello, everyone! I'm using the NTL library to simulate an attack on the GGH cryptosystem with LLL lattice reduction. My code was running well, but suddenly I got error messages like these: "can't free this _ntl_gbigint" and "can't free this _ntl_verylong". Then I noticed that there were problems even with simple computations with int variables. In the code below, if I assign the values 2 and 3 to the variables a and b, the value returned by the multiplication is weird, something like a 300-digit number.

int main(){
int a,b,c;
cin >> a;
cin >> b;
c = a*b;
cout << c << "\n\n";}

I'm using Code Blocks 10.05, and my OS is Linux Mint 13 64 bits. Any suggestions? Thank you in advance!