Gurobi 5.0.1 (linux64) logging started Tue Jan 22 19:45:47 2013 Optimize a model with 4400 rows, 6602 columns and 8800 nonzeros Model has 2200 quadratic constraints Presolve time: 0.01s Presolved: 4400 rows, 6602 columns, 8800 nonzeros Presolved model has 2200 second-order cone constraints Ordering time: 0.00s Barrier statistics: Dense cols : 2 Free vars : 2 AA' NZ : 6.600e+03 Factor NZ : 1.540e+04 (roughly 5 MBytes of memory) Factor Ops : 5.500e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.87933900e+06 0.00000000e+00 4.26e-14 4.64e-01 2.95e+02 0s 1 3.74052638e+05 7.45034191e+04 1.72e-08 4.89e-05 4.54e+01 0s 2 2.80708385e+05 2.21799731e+05 5.25e-08 6.11e-06 8.93e+00 0s 3 2.56525466e+05 2.47625693e+05 7.94e-09 8.36e-07 1.35e+00 0s 4 2.50169623e+05 2.50026326e+05 1.98e-09 1.78e-08 2.17e-02 0s 5 2.50063657e+05 2.50056546e+05 1.05e-10 4.66e-09 1.08e-03 0s 6 2.50058241e+05 2.50056793e+05 3.33e-10 5.53e-10 2.19e-04 0s 7 2.50057150e+05 2.50056859e+05 9.06e-10 1.03e-09 4.42e-05 0s 8 2.50056976e+05 2.50056891e+05 2.77e-10 4.52e-11 1.29e-05 0s Barrier solved model in 8 iterations and 0.08 seconds Optimal objective 2.50056976e+05