Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:18:42 2012 Optimize a model with 292 rows, 823 columns and 823 nonzeros Model has 582 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 3.39s Presolved: 292 rows, 805 columns, 805 nonzeros Variable types: 582 continuous, 223 integer (222 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 0 124.0000000 - - - 3s 0 0 0.00000 0 7 124.00000 0.00000 100% - 3s 0 0 0.00000 0 99 124.00000 0.00000 100% - 3s 0 0 0.00000 0 147 124.00000 0.00000 100% - 3s 0 2 0.00000 0 147 124.00000 0.00000 100% - 3s H 49 49 27.0000000 3.55408 86.8% 38.7 3s * 98 84 33 26.0000000 4.11321 84.2% 35.2 3s * 249 172 31 25.0000000 4.95690 80.2% 28.9 4s * 454 252 31 24.0000000 7.12435 70.3% 27.2 4s 603 312 13.77778 13 492 24.00000 8.76923 63.5% 27.3 5s * 750 369 45 22.0000000 8.76923 60.1% 46.2 6s 1795 436 20.50000 33 470 22.00000 12.00000 45.5% 42.7 10s 2889 627 17.99013 33 467 22.00000 13.96324 36.5% 40.7 15s 3175 670 14.60847 29 468 22.00000 14.12903 35.8% 40.8 20s 4303 716 17.05851 34 458 22.00000 15.43558 29.8% 40.6 25s 5402 675 20.00000 34 441 22.00000 16.50000 25.0% 40.3 30s * 5466 601 39 21.0000000 16.51852 21.3% 40.4 30s 6395 305 19.00000 36 425 21.00000 18.00000 14.3% 40.2 36s Explored 6835 nodes (277436 simplex iterations) in 37.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%