Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:24:00 2012 Optimize a model with 253 rows, 719 columns and 719 nonzeros Model has 504 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 2.94s Presolved: 253 rows, 697 columns, 697 nonzeros Variable types: 504 continuous, 193 integer (192 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 0 142.0000000 - - - 2s 0 0 0.00000 0 12 142.00000 0.00000 100% - 2s 0 0 0.00000 0 116 142.00000 0.00000 100% - 2s 0 0 0.00000 0 147 142.00000 0.00000 100% - 3s 0 2 0.00000 0 137 142.00000 0.00000 100% - 3s * 35 33 21 24.0000000 1.69939 92.9% 69.8 3s * 127 90 41 23.0000000 3.98510 82.7% 36.6 3s * 150 100 18 22.0000000 4.68095 78.7% 35.0 3s * 220 135 14 20.0000000 5.00000 75.0% 33.4 3s 610 288 9.04286 17 421 20.00000 9.04286 54.8% 31.3 5s * 747 331 49 19.0000000 9.04286 52.4% 37.0 5s * 1616 212 50 18.0000000 11.29091 37.3% 34.0 7s H 2073 168 17.0000000 13.00000 23.5% 33.3 8s Explored 2446 nodes (80684 simplex iterations) in 9.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%