Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:28:03 2012 Optimize a model with 288 rows, 803 columns and 803 nonzeros Model has 574 quadratic constraints Presolve removed 0 rows and 16 columns Presolve time: 3.35s Presolved: 288 rows, 787 columns, 787 nonzeros Variable types: 574 continuous, 213 integer (212 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 0 154.0000000 - - - 3s 0 0 0.00000 0 4 154.00000 0.00000 100% - 3s 0 0 0.00000 0 94 154.00000 0.00000 100% - 3s 0 0 0.00000 0 118 154.00000 0.00000 100% - 3s 0 2 0.00000 0 118 154.00000 0.00000 100% - 3s H 41 41 35.0000000 3.48515 90.0% 39.7 3s * 51 47 35 32.0000000 3.48515 89.1% 39.5 3s H 135 95 29.0000000 4.19178 85.5% 26.6 3s * 302 195 33 28.0000000 5.47059 80.5% 22.4 3s * 326 191 25 27.0000000 6.31746 76.6% 22.2 3s 601 331 13.69231 8 118 27.00000 8.30635 69.2% 22.8 5s * 882 442 60 26.0000000 8.30635 68.1% 40.1 8s * 1357 473 60 24.0000000 10.35000 56.9% 41.7 9s 1511 476 23.00000 42 485 24.00000 11.75630 51.0% 40.6 10s 2998 795 20.13115 43 467 24.00000 15.00000 37.5% 37.0 15s 3440 874 19.00000 40 493 24.00000 15.50000 35.4% 36.9 20s 4201 953 21.39394 41 490 24.00000 16.23729 32.3% 36.8 25s * 4656 905 46 23.0000000 16.68229 27.5% 36.6 26s 5379 887 21.71875 39 463 23.00000 17.25543 25.0% 35.8 30s 6273 814 21.50000 40 477 23.00000 18.00000 21.7% 35.0 35s 6994 699 21.72393 39 475 23.00000 18.56757 19.3% 35.0 40s 8384 258 cutoff 41 23.00000 20.19933 12.2% 35.0 45s Explored 8782 nodes (307361 simplex iterations) in 46.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%