Used Big. h and SSP_ Pair. cpp, unable to print "Success",please give some advises,thanks

[HUERSAN]

#include
//security define
#define AES_SECURITY 128
#define MR_PAIRING_SSP
#include "pairing_1.h"
#include "big.h"
using namespace std;
extern "C"
{
#include "miracl.h"
#include "mirdef.h"
}
int main()
{
miracl* mip = mirsys(5000, 16);
mip->IOBASE = 16;
PFC pfc(AES_SECURITY);
//Big mod=pfc.mod;
Big m = get_modulus();
G1 P;
pfc.random(P);
Big a;
pfc.random(a);
G1 aP = pfc.mult(P, a);//aP
Big in_a = inverse(a, m);
Big b;
pfc.random(b);
Big in_b = inverse(b, m);//b-1
G1 abP = pfc.mult(aP, b);//aPb=abP
G1 ab_bP = pfc.mult(abP, in_b);//abP*b-1=aP
if (aP == ab_bP)
{
cout << "Success!" << endl;
}
return 0;
}