Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:22:32 2012 Optimize a model with 125 rows, 317 columns and 317 nonzeros Model has 248 quadratic constraints Presolve time: 1.44s Presolved: 125 rows, 317 columns, 317 nonzeros Variable types: 248 continuous, 69 integer (69 binary) Root relaxation: objective 0.000000e+00, 34 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 46.0000000 - - - 1s 0 0 0.00000 0 38 46.00000 0.00000 100% - 1s 0 0 0.06503 0 68 46.00000 0.06503 100% - 1s H 0 0 45.0000000 0.06503 100% - 1s 0 2 0.11858 0 68 45.00000 0.11858 100% - 1s * 41 41 26 29.0000000 1.54228 94.7% 20.6 1s H 79 69 28.0000000 1.54780 94.5% 23.2 1s * 119 92 22 26.0000000 4.47619 82.8% 22.3 1s * 151 95 17 23.0000000 4.69231 79.6% 23.6 1s * 363 163 12 22.0000000 7.80000 64.5% 22.6 1s H 1674 262 21.0000000 13.60691 35.2% 24.0 3s Explored 2683 nodes (58902 simplex iterations) in 3.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%