Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:33:56 2014 Optimize a model with 6329 rows, 3193 columns and 15680 nonzeros Presolve removed 56 rows and 0 columns Presolve time: 0.12s Presolved: 6273 rows, 3193 columns, 15624 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 8.142949e-03, 3682 iterations, 0.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00814 0 2199 0.67093 0.00814 98.8% - 0s H 0 0 0.4546615 0.00814 98.2% - 0s 0 0 0.01222 0 1332 0.45466 0.01222 97.3% - 1s 0 0 0.03236 0 839 0.45466 0.03236 92.9% - 1s H 0 0 0.4078438 0.03236 92.1% - 1s H 0 0 0.3865663 0.03236 91.6% - 1s 0 0 0.05215 0 598 0.38657 0.05215 86.5% - 1s H 0 0 0.3723768 0.05215 86.0% - 1s 0 1 0.05215 0 598 0.37238 0.05215 86.0% - 3s H 1 1 0.3152263 0.05215 83.5% 953 4s H 3 2 0.3146181 0.16722 46.9% 318 4s H 5 3 0.2645261 0.18222 31.1% 191 4s 7 4 0.22970 0 124 0.26453 0.22970 13.2% 136 5s H 10 6 0.2610793 0.24537 6.02% 579 5s * 12 7 25 0.2453742 0.24537 0.00% 482 5s Explored 12 nodes (22908 simplex iterations) in 5.28 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%