Gurobi 5.0.1 (linux64) logging started Tue Jan 22 19:36:04 2013 Optimize a model with 140 rows, 204 columns and 320 nonzeros Model has 40 quadratic constraints Presolve removed 20 rows and 20 columns Presolve time: 0.24s Presolved: 240 rows, 304 columns, 520 nonzeros Variable types: 284 continuous, 20 integer (20 binary) Root relaxation: objective 0.000000e+00, 80 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 2225.8183659 - - - 0s 0 0 0.00000 0 13 2225.81837 0.00000 100% - 0s 0 0 0.00000 0 13 2225.81837 0.00000 100% - 0s 0 2 0.00000 0 13 2225.81837 0.00000 100% - 0s * 30 30 20 1865.3574100 0.00000 100% 23.0 0s * 31 28 20 1689.2903472 0.00000 100% 22.2 0s H 71 57 1647.2075794 0.00000 100% 35.2 0s * 71 57 20 1647.2071443 0.00000 100% 35.2 0s H 644 352 1621.6158328 322.72811 80.1% 44.6 1s * 644 336 29 1621.6148907 322.72811 80.1% 44.6 1s * 861 367 29 1580.3697743 402.18854 74.6% 45.0 2s * 864 349 29 1572.8977051 402.18854 74.4% 44.8 2s 3056 636 1482.32204 18 11 1572.89771 1052.09912 33.1% 45.5 5s 7794 641 cutoff 22 1572.89771 1326.79296 15.6% 39.8 10s Cutting planes: Explored 10416 nodes (380600 simplex iterations) in 12.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.572897705124e+03, best bound 1.572897705124e+03, gap 0.0%