Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:14 2012 Optimize a model with 104 rows, 227 columns and 227 nonzeros Model has 206 quadratic constraints Presolve time: 1.19s Presolved: 104 rows, 227 columns, 227 nonzeros Variable types: 206 continuous, 21 integer (21 binary) Root relaxation: objective 0.000000e+00, 10 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 52.0000000 - - - 1s 0 0 0.00000 0 17 52.00000 0.00000 100% - 1s 0 0 0.37500 0 20 52.00000 0.37500 99.3% - 1s 0 2 0.45833 0 20 52.00000 0.45833 99.1% - 1s * 27 27 16 46.0000000 6.60935 85.6% 26.4 1s H 47 39 45.0000000 7.22917 83.9% 25.9 1s * 49 41 14 44.0000000 7.22917 83.6% 25.1 1s * 51 38 15 43.0000000 7.22917 83.2% 24.3 1s * 70 54 14 42.0000000 7.37500 82.4% 25.2 1s * 167 108 11 41.0000000 14.33970 65.0% 27.0 1s * 183 97 11 39.0000000 14.33970 63.2% 25.5 1s * 471 111 10 38.0000000 23.71934 37.6% 24.9 1s Cutting planes: Gomory: 1 Explored 973 nodes (22241 simplex iterations) in 1.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%