Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:01:41 2012 Optimize a model with 214 rows, 488 columns and 488 nonzeros Model has 426 quadratic constraints Presolve time: 2.48s Presolved: 214 rows, 488 columns, 488 nonzeros Variable types: 426 continuous, 62 integer (62 binary) Root relaxation: objective 0.000000e+00, 31 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 118.0000000 - - - 2s 0 0 0.00000 0 34 118.00000 0.00000 100% - 2s 0 0 0.10792 0 61 118.00000 0.10792 100% - 2s 0 2 0.11012 0 61 118.00000 0.11012 100% - 2s H 56 56 64.0000000 4.09400 93.6% 36.7 2s * 56 56 32 63.0000000 4.09400 93.5% 36.9 2s H 95 81 61.0000000 4.31707 92.9% 38.0 2s H 186 139 56.0000000 5.41176 90.3% 41.2 2s 763 424 52.55882 52 285 56.00000 16.50000 70.5% 53.2 5s 4510 2098 55.34187 51 275 56.00000 31.16344 44.4% 27.9 10s 8612 3888 44.71429 39 272 56.00000 35.79066 36.1% 24.1 15s 12993 5355 46.21315 31 287 56.00000 38.57640 31.1% 22.1 20s *15944 6012 52 55.0000000 39.65517 27.9% 21.4 23s H15950 5673 54.0000000 39.65517 26.6% 21.4 23s H16337 4619 52.0000000 39.77778 23.5% 21.3 24s 16365 4622 42.30088 34 296 52.00000 39.80644 23.4% 21.3 25s 16508 4634 47.94513 31 289 52.00000 39.85106 23.4% 21.2 30s 17796 4719 44.87528 41 283 52.00000 40.54545 22.0% 21.0 35s 21229 4745 50.16708 48 283 52.00000 42.27710 18.7% 20.7 40s 25126 4436 48.14980 42 278 52.00000 43.93098 15.5% 20.5 45s 28186 3845 cutoff 39 52.00000 45.27782 12.9% 20.4 50s 31745 2685 47.57934 44 269 52.00000 47.04614 9.53% 20.3 55s Explored 35858 nodes (701369 simplex iterations) in 58.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.200000000006e+01, best bound 5.200000000006e+01, gap 0.0%