Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:25 2012 Optimize a model with 167 rows, 498 columns and 498 nonzeros Model has 332 quadratic constraints Presolve removed 0 rows and 20 columns Presolve time: 1.94s Presolved: 167 rows, 478 columns, 478 nonzeros Variable types: 332 continuous, 146 integer (145 binary) Root relaxation: objective 0.000000e+00, 59 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 84.0000000 - - - 1s 0 0 0.00000 0 80 84.00000 0.00000 100% - 1s 0 0 0.00000 0 104 84.00000 0.00000 100% - 1s 0 0 0.00000 0 104 84.00000 0.00000 100% - 2s 0 2 0.00000 0 103 84.00000 0.00000 100% - 2s * 28 28 21 11.0000000 1.47541 86.6% 30.2 2s * 93 43 14 10.0000000 2.55000 74.5% 22.6 2s * 105 40 9 9.0000000 2.62887 70.8% 22.7 2s * 155 31 8 8.0000000 3.00000 62.5% 21.5 2s Cutting planes: Gomory: 4 Explored 264 nodes (8090 simplex iterations) in 2.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%