Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:58:49 2012 Optimize a model with 189 rows, 570 columns and 570 nonzeros Model has 376 quadratic constraints Presolve removed 0 rows and 33 columns Presolve time: 2.19s Presolved: 189 rows, 537 columns, 537 nonzeros Variable types: 376 continuous, 161 integer (160 binary) Root relaxation: objective 0.000000e+00, 67 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 99.0000000 - - - 2s 0 0 0.00000 0 127 99.00000 0.00000 100% - 2s 0 0 0.09890 0 149 99.00000 0.09890 100% - 2s 0 2 0.12632 0 149 99.00000 0.12632 100% - 2s * 24 24 12 13.0000000 1.77966 86.3% 28.0 2s H 54 27 10.0000000 1.85185 81.5% 22.3 2s * 77 34 15 9.0000000 4.46591 50.4% 25.7 2s H 132 38 9.0000000 5.41176 39.9% 23.9 2s * 171 27 13 8.0000000 6.07595 24.1% 22.0 2s Cutting planes: Gomory: 1 Explored 209 nodes (5970 simplex iterations) in 2.42 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%