Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:58:13 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 73.0000000 - - - 1s 0 0 0.00000 0 22 73.00000 0.00000 100% - 1s 0 0 0.71429 0 24 73.00000 0.71429 99.0% - 1s 0 0 0.71429 0 24 73.00000 0.71429 99.0% - 1s 0 2 0.71429 0 24 73.00000 0.71429 99.0% - 1s * 29 29 17 58.0000000 7.00000 87.9% 37.3 1s * 30 26 17 56.0000000 7.00000 87.5% 36.2 1s * 155 109 19 55.0000000 19.23077 65.0% 31.2 1s H 313 156 54.0000000 24.96655 53.8% 26.6 1s * 2933 438 47 53.0000000 39.00000 26.4% 25.5 4s 3710 337 cutoff 39 53.00000 42.92308 19.0% 24.1 5s Explored 4600 nodes (105145 simplex iterations) in 5.56 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%