Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:33:50 2014 Optimize a model with 3249 rows, 3193 columns and 12600 nonzeros Presolve time: 0.08s Presolved: 3249 rows, 3193 columns, 12600 nonzeros Variable types: 1 continuous, 3192 integer (3192 binary) Found heuristic solution: objective 0.7904642 Found heuristic solution: objective 0.7801211 Found heuristic solution: objective 0.6709344 Root relaxation: objective 1.625525e-01, 1517 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.16255 0 479 0.67093 0.16255 75.8% - 0s H 0 0 0.4042580 0.16255 59.8% - 0s 0 0 0.16913 0 423 0.40426 0.16913 58.2% - 0s 0 0 0.16913 0 478 0.40426 0.16913 58.2% - 0s H 0 0 0.3878637 0.16913 56.4% - 0s 0 0 0.16923 0 438 0.38786 0.16923 56.4% - 0s H 0 0 0.3562393 0.16923 52.5% - 0s H 0 0 0.3007562 0.16923 43.7% - 0s 0 0 0.17011 0 360 0.30076 0.17011 43.4% - 0s 0 2 0.17020 0 360 0.30076 0.17020 43.4% - 1s H 1 2 0.3003779 0.17020 43.3% 433 1s H 3 3 0.2791324 0.17020 39.0% 144 1s H 3 3 0.2683351 0.17020 36.6% 144 1s H 4 3 0.2635315 0.21115 19.9% 108 1s H 4 3 0.2634078 0.21115 19.8% 108 1s H 4 2 0.2482420 0.21115 14.9% 108 1s H 7 4 0.2453742 0.23083 5.93% 439 1s Cutting planes: Gomory: 1 Implied bound: 1 Zero half: 1 Explored 8 nodes (11629 simplex iterations) in 1.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.453741856682e-01, best bound 2.453741856682e-01, gap 0.0%