Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:58:00 2012 Optimize a model with 136 rows, 294 columns and 294 nonzeros Model has 270 quadratic constraints Presolve time: 1.57s Presolved: 136 rows, 294 columns, 294 nonzeros Variable types: 270 continuous, 24 integer (24 binary) Root relaxation: objective 0.000000e+00, 12 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 71.0000000 - - - 1s 0 0 0.00000 0 24 71.00000 0.00000 100% - 1s 0 0 0.50000 0 24 71.00000 0.50000 99.3% - 1s 0 0 0.50000 0 24 71.00000 0.50000 99.3% - 1s 0 2 0.50000 0 24 71.00000 0.50000 99.3% - 1s * 32 32 17 59.0000000 5.70000 90.3% 35.1 1s * 37 29 18 58.0000000 5.70000 90.2% 30.9 1s * 94 76 18 57.0000000 10.92063 80.8% 31.4 1s H 326 161 52.0000000 19.77778 62.0% 30.7 1s 4434 273 cutoff 42 52.00000 46.14286 11.3% 20.5 5s Explored 4925 nodes (96728 simplex iterations) in 5.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.200000000000e+01, best bound 5.200000000000e+01, gap 0.0%