Gurobi 5.6.3 (linux64) logging started Tue Oct 7 21:04:16 2014 Optimize a model with 8281 rows, 8191 columns and 32490 nonzeros Presolve time: 0.15s Presolved: 8281 rows, 8191 columns, 32490 nonzeros Variable types: 1 continuous, 8190 integer (8190 binary) Found heuristic solution: objective 0.9970018 Found heuristic solution: objective 0.9945550 Found heuristic solution: objective 0.7506075 Root relaxation: objective 1.347783e-01, 3235 iterations, 0.32 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.13478 0 759 0.75061 0.13478 82.0% - 0s H 0 0 0.5663464 0.13478 76.2% - 0s H 0 0 0.2845348 0.13478 52.6% - 0s 0 0 0.13915 0 660 0.28453 0.13915 51.1% - 1s 0 0 0.13915 0 717 0.28453 0.13915 51.1% - 1s H 0 0 0.2814863 0.13915 50.6% - 1s 0 0 0.14366 0 728 0.28149 0.14366 49.0% - 1s H 0 0 0.2669584 0.14366 46.2% - 1s 0 0 0.14504 0 740 0.26696 0.14504 45.7% - 1s 0 0 0.14505 0 757 0.26696 0.14505 45.7% - 1s 0 0 0.14505 0 725 0.26696 0.14505 45.7% - 1s H 0 0 0.2564556 0.14505 43.4% - 2s H 0 0 0.2561996 0.14505 43.4% - 2s H 0 0 0.2538457 0.14505 42.9% - 2s 0 2 0.14732 0 635 0.25385 0.14732 42.0% - 2s * 26 24 16 0.2532594 0.14732 41.8% 318 2s H 27 23 0.2356737 0.14732 37.5% 306 2s * 46 40 28 0.2341526 0.14732 37.1% 226 2s * 48 38 29 0.2321377 0.14732 36.5% 217 2s * 54 30 5 0.2274034 0.15085 33.7% 204 2s * 58 24 4 0.2236374 0.15448 30.9% 196 2s Cutting planes: Gomory: 3 MIR: 23 Explored 83 nodes (28134 simplex iterations) in 2.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.236374211966e-01, best bound 2.236374211966e-01, gap 0.0%