Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:31:58 2012 Optimize a model with 255 rows, 725 columns and 725 nonzeros Model has 508 quadratic constraints Presolve removed 0 rows and 14 columns Presolve time: 2.96s Presolved: 255 rows, 711 columns, 711 nonzeros Variable types: 508 continuous, 203 integer (202 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 135.0000000 - - - 2s 0 0 0.00000 0 99 135.00000 0.00000 100% - 2s 0 0 0.00000 0 106 135.00000 0.00000 100% - 3s 0 0 0.00000 0 167 135.00000 0.00000 100% - 3s 0 2 0.00000 0 165 135.00000 0.00000 100% - 3s H 27 27 51.0000000 2.35000 95.4% 49.0 3s H 47 47 22.0000000 2.35000 89.3% 33.6 3s H 56 50 21.0000000 2.35000 88.8% 33.0 3s H 136 77 19.0000000 4.45604 76.5% 25.9 3s * 145 68 20 17.0000000 4.45604 73.8% 25.8 3s 607 246 8.00000 12 691 17.00000 8.00000 52.9% 29.2 5s 3158 476 cutoff 33 17.00000 13.00000 23.5% 28.9 10s * 4482 154 33 16.0000000 14.25949 10.9% 26.5 12s Explored 4669 nodes (124843 simplex iterations) in 12.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%