Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:54:39 2012 Optimize a model with 281 rows, 799 columns and 799 nonzeros Model has 560 quadratic constraints Presolve removed 0 rows and 23 columns Presolve time: 3.27s Presolved: 281 rows, 776 columns, 776 nonzeros Variable types: 560 continuous, 216 integer (215 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 0 139.0000000 - - - 3s 0 0 0.00000 0 142 139.00000 0.00000 100% - 3s 0 0 0.00000 0 188 139.00000 0.00000 100% - 3s 0 0 0.00000 0 188 139.00000 0.00000 100% - 3s 0 2 0.00000 0 188 139.00000 0.00000 100% - 3s H 54 54 60.0000000 2.26190 96.2% 30.0 3s * 65 65 34 26.0000000 2.26190 91.3% 28.1 3s H 108 80 23.0000000 2.27500 90.1% 26.7 3s 606 345 8.00000 15 480 23.00000 8.00000 65.2% 33.8 5s 2037 754 22.09302 38 435 23.00000 10.06542 56.2% 44.0 10s * 2546 889 42 22.0000000 10.92727 50.3% 41.6 11s 4027 1284 13.90355 34 470 22.00000 12.34017 43.9% 40.2 15s 4922 1439 13.46316 32 460 22.00000 13.00000 40.9% 39.5 20s 5419 1542 16.50661 36 478 22.00000 13.29008 39.6% 39.1 25s * 5725 1447 43 21.0000000 13.46154 35.9% 39.0 26s 6662 1503 17.36786 34 475 21.00000 14.00000 33.3% 39.0 30s 7741 1524 19.86786 34 419 21.00000 14.50000 31.0% 38.7 35s 8830 1483 17.50847 34 433 21.00000 15.07099 28.2% 38.7 40s 10069 1425 19.40528 35 444 21.00000 15.58333 25.8% 38.4 45s 11861 1239 19.36786 35 448 21.00000 16.29078 22.4% 38.3 50s 13445 931 18.57471 35 428 21.00000 16.98596 19.1% 38.4 55s 15004 489 18.86820 33 422 21.00000 17.96094 14.5% 38.4 60s Explored 15825 nodes (604836 simplex iterations) in 61.74 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%