Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:35:52 2012 Optimize a model with 187 rows, 450 columns and 450 nonzeros Model has 372 quadratic constraints Presolve time: 2.17s Presolved: 187 rows, 450 columns, 450 nonzeros Variable types: 372 continuous, 78 integer (78 binary) Root relaxation: objective 0.000000e+00, 39 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 96.0000000 - - - 2s 0 0 0.00000 0 38 96.00000 0.00000 100% - 2s 0 0 0.00000 0 70 96.00000 0.00000 100% - 2s 0 0 0.00000 0 69 96.00000 0.00000 100% - 2s 0 2 0.00000 0 69 96.00000 0.00000 100% - 2s H 54 54 46.0000000 4.83333 89.5% 29.6 2s * 60 56 35 43.0000000 4.83333 88.8% 31.9 2s * 103 91 30 42.0000000 5.35000 87.3% 29.0 2s * 891 499 65 41.0000000 13.07143 68.1% 41.5 4s * 1049 523 50 40.0000000 14.60000 63.5% 40.3 4s 1340 561 36.65479 41 265 40.00000 17.76596 55.6% 36.8 5s * 2020 658 40 39.0000000 20.90977 46.4% 31.9 5s 3623 1186 34.68750 39 273 39.00000 24.50704 37.2% 26.8 10s H 4660 1373 38.0000000 25.50000 32.9% 25.3 12s 6214 1490 cutoff 38 38.00000 27.21589 28.4% 24.0 15s * 6988 1414 41 37.0000000 27.93750 24.5% 23.5 16s H 7191 1283 36.0000000 28.25055 21.5% 23.5 16s 9040 914 cutoff 35 36.00000 30.80000 14.4% 22.9 20s Explored 10671 nodes (237177 simplex iterations) in 22.53 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%