Gurobi 5.0.1 (linux64) logging started Tue Jan 22 19:50:18 2013 Optimize a model with 12000 rows, 18002 columns and 24000 nonzeros Model has 6000 quadratic constraints Presolve time: 0.01s Presolved: 12000 rows, 18002 columns, 24000 nonzeros Presolved model has 6000 second-order cone constraints Ordering time: 0.00s Barrier statistics: Dense cols : 2 Free vars : 2 AA' NZ : 1.800e+04 Factor NZ : 4.200e+04 (roughly 12 MBytes of memory) Factor Ops : 1.500e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.17754882e+06 0.00000000e+00 9.95e-14 4.83e-01 2.98e+02 0s 1 1.03301683e+06 2.05114180e+05 2.18e-08 4.90e-05 4.60e+01 0s 2 7.71638799e+05 6.09398436e+05 3.29e-08 3.73e-06 9.01e+00 0s 3 7.08504131e+05 6.79916415e+05 5.43e-09 3.78e-07 1.59e+00 0s 4 6.88185570e+05 6.87706278e+05 3.76e-10 3.41e-08 2.66e-02 0s 5 6.87864795e+05 6.87823335e+05 4.16e-11 3.21e-10 2.30e-03 0s 6 6.87829995e+05 6.87824816e+05 2.62e-10 3.07e-10 2.88e-04 0s 7 6.87826974e+05 6.87825470e+05 8.37e-11 1.27e-12 8.35e-05 0s 8 6.87826207e+05 6.87825546e+05 3.74e-11 3.11e-13 3.67e-05 0s Barrier solved model in 8 iterations and 0.22 seconds Optimal objective 6.87826207e+05