Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:58:27 2012 Optimize a model with 177 rows, 545 columns and 545 nonzeros Model has 352 quadratic constraints Presolve removed 0 rows and 31 columns Presolve time: 2.05s Presolved: 177 rows, 514 columns, 514 nonzeros Variable types: 352 continuous, 162 integer (161 binary) Root relaxation: objective 0.000000e+00, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 87.0000000 - - - 2s 0 0 0.00000 0 55 87.00000 0.00000 100% - 2s 0 0 0.00000 0 62 87.00000 0.00000 100% - 2s 0 0 0.00000 0 51 87.00000 0.00000 100% - 2s 0 2 0.00000 0 101 87.00000 0.00000 100% - 2s H 32 30 8.0000000 0.62453 92.2% 49.4 2s * 41 23 9 7.0000000 0.66215 90.5% 50.4 2s * 102 22 9 6.0000000 1.53865 74.4% 31.0 2s Cutting planes: Explored 275 nodes (7475 simplex iterations) in 2.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%