Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:29 2012 Optimize a model with 155 rows, 467 columns and 467 nonzeros Model has 308 quadratic constraints Presolve removed 0 rows and 26 columns Presolve time: 1.79s Presolved: 155 rows, 441 columns, 441 nonzeros Variable types: 308 continuous, 133 integer (132 binary) Root relaxation: objective 0.000000e+00, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 74.0000000 - - - 1s 0 0 0.00000 0 73 74.00000 0.00000 100% - 1s 0 0 0.00000 0 92 74.00000 0.00000 100% - 1s 0 0 0.00000 0 92 74.00000 0.00000 100% - 1s 0 2 0.00000 0 92 74.00000 0.00000 100% - 1s H 42 42 14.0000000 1.36585 90.2% 21.7 1s * 50 46 33 13.0000000 1.36585 89.5% 23.2 1s H 71 53 11.0000000 2.05882 81.3% 19.7 1s * 80 46 24 10.0000000 2.05882 79.4% 20.2 1s H 218 61 9.0000000 3.96629 55.9% 16.8 2s * 219 48 17 8.0000000 3.96629 50.4% 16.7 2s Cutting planes: Gomory: 2 Explored 339 nodes (7426 simplex iterations) in 2.08 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%