Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:40:45 2012 Optimize a model with 268 rows, 753 columns and 753 nonzeros Model has 534 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 3.10s Presolved: 268 rows, 735 columns, 735 nonzeros Variable types: 534 continuous, 201 integer (200 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 0 132.0000000 - - - 3s 0 0 0.00000 0 72 132.00000 0.00000 100% - 3s 0 0 0.00000 0 93 132.00000 0.00000 100% - 3s 0 0 0.00000 0 5 132.00000 0.00000 100% - 3s 0 2 0.00000 0 179 132.00000 0.00000 100% - 3s H 42 42 29.0000000 2.75913 90.5% 40.0 3s * 58 58 34 27.0000000 2.75913 89.8% 38.8 3s H 85 61 23.0000000 2.79667 87.8% 34.3 3s * 85 59 18 22.0000000 2.79667 87.3% 34.5 3s H 130 82 20.0000000 4.12230 79.4% 31.8 3s * 177 107 30 19.0000000 4.14389 78.2% 30.6 3s 1178 102 16.57514 8 178 19.00000 13.99932 26.3% 32.5 5s Cutting planes: Explored 1623 nodes (47997 simplex iterations) in 5.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%