Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:39:52 2012 Optimize a model with 173 rows, 514 columns and 514 nonzeros Model has 344 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 2.01s Presolved: 173 rows, 492 columns, 492 nonzeros Variable types: 344 continuous, 148 integer (147 binary) Root relaxation: objective 0.000000e+00, 61 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 90.0000000 - - - 2s 0 0 0.00000 0 4 90.00000 0.00000 100% - 2s 0 0 0.00000 0 5 90.00000 0.00000 100% - 2s 0 0 0.00000 0 4 90.00000 0.00000 100% - 2s 0 2 0.00000 0 83 90.00000 0.00000 100% - 2s * 34 34 23 14.0000000 1.06383 92.4% 31.0 2s H 46 34 13.0000000 1.10112 91.5% 25.7 2s * 53 31 13 10.0000000 1.10112 89.0% 28.3 2s H 73 38 9.0000000 1.47826 83.6% 24.5 2s * 73 36 19 8.0000000 1.47826 81.5% 24.6 2s H 106 35 8.0000000 2.29167 71.4% 25.9 2s Cutting planes: Explored 348 nodes (7698 simplex iterations) in 2.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.999999998989e+00, best bound 7.999999998989e+00, gap 0.0%