Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:20:51 2012 Optimize a model with 237 rows, 685 columns and 685 nonzeros Model has 472 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 2.76s Presolved: 237 rows, 661 columns, 661 nonzeros Variable types: 472 continuous, 189 integer (188 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 0 117.0000000 - - - 2s 0 0 0.00000 0 7 117.00000 0.00000 100% - 2s 0 0 0.00000 0 157 117.00000 0.00000 100% - 2s 0 0 0.00000 0 147 117.00000 0.00000 100% - 2s 0 2 0.00000 0 146 117.00000 0.00000 100% - 2s * 20 19 12 16.0000000 2.84810 82.2% 97.2 3s * 42 30 16 15.0000000 3.00000 80.0% 56.9 3s H 158 59 13.0000000 4.83704 62.8% 29.8 3s 779 158 9.82022 30 414 13.00000 9.82022 24.5% 32.5 5s * 850 116 34 12.0000000 9.82022 18.2% 32.6 5s Explored 876 nodes (30297 simplex iterations) in 5.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%