Gurobi 5.0.1 (linux64) logging started Tue Jan 22 19:36:55 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 2175.9635750 - - - 0s 0 0 0.00000 0 10 2175.96357 0.00000 100% - 0s 0 0 0.00000 0 10 2175.96357 0.00000 100% - 0s 0 2 0.00000 0 10 2175.96357 0.00000 100% - 0s * 33 33 20 1761.2136650 0.00000 100% 21.3 0s * 34 32 20 1659.3561923 0.00000 100% 20.7 0s H 54 40 1606.0640311 0.00000 100% 29.9 0s * 72 54 20 1565.4549231 0.00000 100% 33.3 0s H 106 77 1506.1172606 0.00000 100% 29.5 0s * 106 77 20 1506.1164162 0.00000 100% 29.5 0s H 547 338 1487.5326976 377.88920 74.6% 49.3 1s * 547 338 20 1487.5315889 377.88920 74.6% 49.3 1s H 687 382 1451.4332438 410.16004 71.7% 50.2 1s * 687 382 20 1451.4329393 410.16004 71.7% 50.2 1s 2212 398 1310.66493 27 7 1451.43294 712.11899 50.9% 59.5 5s 5264 406 1400.76478 29 5 1451.43294 1121.60635 22.7% 58.9 10s Cutting planes: Explored 7625 nodes (394264 simplex iterations) in 12.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.451432961175e+03, best bound 1.451432939341e+03, gap 0.0000%