Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:50:23 2012 Optimize a model with 183 rows, 446 columns and 446 nonzeros Model has 364 quadratic constraints Presolve time: 2.12s Presolved: 183 rows, 446 columns, 446 nonzeros Variable types: 364 continuous, 82 integer (82 binary) Root relaxation: objective 0.000000e+00, 41 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 89.0000000 - - - 2s 0 0 0.00000 0 2 89.00000 0.00000 100% - 2s 0 0 0.00000 0 52 89.00000 0.00000 100% - 2s 0 0 0.00000 0 41 89.00000 0.00000 100% - 2s 0 2 0.00000 0 41 89.00000 0.00000 100% - 2s H 54 54 48.0000000 4.68493 90.2% 33.8 2s * 62 60 39 46.0000000 4.68493 89.8% 31.3 2s H 93 60 35.0000000 5.24528 85.0% 28.9 2s * 103 69 26 34.0000000 5.24528 84.6% 28.3 2s 840 381 18.49315 32 264 34.00000 14.66667 56.9% 38.1 5s * 4782 1281 42 33.0000000 21.66667 34.3% 24.8 9s 4870 1283 29.80952 36 261 33.00000 21.79487 34.0% 24.8 10s 7177 1305 31.02174 39 188 33.00000 24.00000 27.3% 23.9 15s 9513 1136 29.50000 34 252 33.00000 26.04615 21.1% 23.1 20s 13524 241 31.93846 38 254 33.00000 30.58311 7.32% 21.7 25s Explored 13815 nodes (296424 simplex iterations) in 25.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%