Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:33:12 2012 Optimize a model with 304 rows, 848 columns and 848 nonzeros Model has 606 quadratic constraints Presolve removed 0 rows and 19 columns Presolve time: 3.54s Presolved: 304 rows, 829 columns, 829 nonzeros Variable types: 606 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 0 153.0000000 - - - 3s 0 0 0.00000 0 7 153.00000 0.00000 100% - 3s 0 0 0.00000 0 155 153.00000 0.00000 100% - 3s 0 0 0.00000 0 91 153.00000 0.00000 100% - 3s 0 2 0.00000 0 89 153.00000 0.00000 100% - 3s H 43 43 34.0000000 1.70554 95.0% 45.7 3s * 43 43 30 31.0000000 1.70554 94.5% 46.7 3s * 307 214 33 30.0000000 4.39359 85.4% 24.2 4s H 550 361 29.0000000 7.36325 74.6% 22.2 4s 709 455 7.98994 17 486 29.00000 7.98994 72.4% 28.2 5s * 769 468 47 28.0000000 7.98994 71.5% 30.7 5s * 869 451 40 26.0000000 7.98994 69.3% 36.6 5s H 1000 478 25.0000000 7.98994 68.0% 41.9 12s 1679 517 cutoff 41 25.00000 12.58333 49.7% 41.7 15s H 2916 387 24.0000000 16.00000 33.3% 38.9 19s 3001 386 19.08718 37 503 24.00000 16.00000 33.3% 39.4 20s 3362 382 22.64662 41 458 24.00000 16.86550 29.7% 39.6 25s 4400 279 20.42623 38 472 24.00000 18.82659 21.6% 37.6 30s Explored 5358 nodes (194992 simplex iterations) in 34.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%