Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:56:07 2012 Optimize a model with 293 rows, 829 columns and 829 nonzeros Model has 584 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 3.41s Presolved: 293 rows, 804 columns, 804 nonzeros Variable types: 584 continuous, 220 integer (219 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 131.0000000 - - - 3s 0 0 0.00000 0 7 131.00000 0.00000 100% - 3s 0 0 0.00000 0 164 131.00000 0.00000 100% - 3s 0 0 0.00000 0 124 131.00000 0.00000 100% - 3s 0 2 0.00000 0 122 131.00000 0.00000 100% - 3s H 50 50 29.0000000 1.74667 94.0% 37.7 3s * 57 57 37 28.0000000 1.74667 93.8% 35.7 3s H 270 188 26.0000000 3.80000 85.4% 24.2 3s * 272 121 21 22.0000000 3.80000 82.7% 24.2 3s 683 307 6.22111 17 782 22.00000 6.22111 71.7% 34.0 5s * 1491 385 55 21.0000000 10.76923 48.7% 35.2 7s 2501 507 13.70531 34 499 21.00000 13.66021 35.0% 35.0 10s 3663 517 17.66419 38 487 21.00000 15.26442 27.3% 35.0 15s 4133 489 17.17692 35 500 21.00000 15.67431 25.4% 34.4 20s 5516 314 19.07982 36 480 21.00000 16.91450 19.5% 35.0 25s * 5995 127 49 20.0000000 17.75205 11.2% 35.1 27s Explored 6144 nodes (216239 simplex iterations) in 27.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%