Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:59:04 2014 Optimize a model with 7569 rows, 7483 columns and 29670 nonzeros Presolve time: 0.14s Presolved: 7569 rows, 7483 columns, 29670 nonzeros Variable types: 1 continuous, 7482 integer (7482 binary) Found heuristic solution: objective 1.0795780 Found heuristic solution: objective 1.0242806 Found heuristic solution: objective 0.9764378 Root relaxation: objective 1.363055e-01, 3290 iterations, 0.34 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.13631 0 741 0.97644 0.13631 86.0% - 0s H 0 0 0.9656999 0.13631 85.9% - 0s H 0 0 0.6547812 0.13631 79.2% - 0s H 0 0 0.2662832 0.13631 48.8% - 0s 0 0 0.14351 0 712 0.26628 0.14351 46.1% - 1s 0 0 0.14351 0 728 0.26628 0.14351 46.1% - 1s H 0 0 0.2635009 0.14351 45.5% - 1s H 0 0 0.2614922 0.14351 45.1% - 1s 0 0 0.14865 0 713 0.26149 0.14865 43.2% - 1s 0 0 0.14989 0 665 0.26149 0.14989 42.7% - 1s 0 0 0.14989 0 665 0.26149 0.14989 42.7% - 1s 0 0 0.14989 0 605 0.26149 0.14989 42.7% - 1s H 0 0 0.2575876 0.14989 41.8% - 2s H 0 0 0.2544006 0.14989 41.1% - 2s H 0 0 0.2248624 0.14989 33.3% - 2s * 0 0 0 0.2247086 0.22471 0.00% - 2s Cutting planes: Gomory: 3 Zero half: 2 Explored 1 nodes (13850 simplex iterations) in 2.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.247085764814e-01, best bound 2.247085764814e-01, gap 0.0%