Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:55:30 2012 Optimize a model with 265 rows, 760 columns and 760 nonzeros Model has 528 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 3.08s Presolved: 265 rows, 742 columns, 742 nonzeros Variable types: 528 continuous, 214 integer (213 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 0 144.0000000 - - - 3s 0 0 0.00000 0 8 144.00000 0.00000 100% - 3s 0 0 0.00000 0 10 144.00000 0.00000 100% - 3s 0 0 0.00000 0 116 144.00000 0.00000 100% - 3s 0 2 0.00000 0 116 144.00000 0.00000 100% - 3s * 35 33 24 25.0000000 2.68842 89.2% 68.4 3s H 80 68 23.0000000 2.80769 87.8% 39.3 3s H 81 69 22.0000000 2.80769 87.2% 39.0 3s * 105 77 56 21.0000000 2.80769 86.6% 32.9 3s H 161 108 20.0000000 3.00000 85.0% 29.2 3s * 188 83 19 17.0000000 3.72000 78.1% 28.0 3s * 430 123 38 16.0000000 7.96000 50.2% 27.2 3s H 578 80 15.0000000 10.03867 33.1% 27.4 3s Cutting planes: Explored 766 nodes (22649 simplex iterations) in 4.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%