Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:56:37 2012 Optimize a model with 135 rows, 291 columns and 291 nonzeros Model has 268 quadratic constraints Presolve time: 1.56s Presolved: 135 rows, 291 columns, 291 nonzeros Variable types: 268 continuous, 23 integer (23 binary) Root relaxation: objective 0.000000e+00, 11 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 68.0000000 - - - 1s 0 0 0.00000 0 21 68.00000 0.00000 100% - 1s 0 0 0.50000 0 22 68.00000 0.50000 99.3% - 1s 0 2 0.50327 0 22 68.00000 0.50327 99.3% - 1s * 34 34 19 58.0000000 7.09259 87.8% 33.1 1s * 36 31 18 57.0000000 7.09259 87.6% 31.4 1s * 133 100 15 56.0000000 15.50000 72.3% 36.8 1s * 164 117 18 54.0000000 16.00000 70.4% 35.8 1s 4445 778 48.40000 38 171 54.00000 41.50000 23.1% 19.8 5s * 5080 759 41 53.0000000 43.00000 18.9% 19.2 5s Explored 6989 nodes (123365 simplex iterations) in 6.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.300000000000e+01, best bound 5.300000000000e+01, gap 0.0%