Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:52:02 2012 Optimize a model with 185 rows, 550 columns and 550 nonzeros Model has 368 quadratic constraints Presolve removed 0 rows and 23 columns Presolve time: 2.15s Presolved: 185 rows, 527 columns, 527 nonzeros Variable types: 368 continuous, 159 integer (158 binary) Root relaxation: objective 0.000000e+00, 65 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 - - - 2s 0 0 0.00000 0 62 84.00000 0.00000 100% - 2s 0 0 0.00000 0 92 84.00000 0.00000 100% - 2s 0 0 0.00000 0 92 84.00000 0.00000 100% - 2s 0 2 0.00000 0 19 84.00000 0.00000 100% - 2s H 27 27 39.0000000 1.06550 97.3% 35.5 2s * 40 35 29 13.0000000 1.06550 91.8% 30.0 2s H 162 84 12.0000000 2.08772 82.6% 19.5 2s * 168 67 20 11.0000000 2.08772 81.0% 20.3 2s H 217 55 9.0000000 2.44121 72.9% 20.5 2s H 384 77 9.0000000 4.59459 48.9% 22.2 2s * 448 45 11 8.0000000 5.08273 36.5% 21.8 2s Cutting planes: Gomory: 1 Explored 544 nodes (13368 simplex iterations) in 2.66 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%