Gurobi 5.6.3 (linux64) logging started Wed Oct 8 03:06:58 2014 Optimize a model with 43264 rows, 43057 columns and 171603 nonzeros Presolve time: 1.19s Presolved: 43264 rows, 43057 columns, 171603 nonzeros Variable types: 1 continuous, 43056 integer (43056 binary) Found heuristic solution: objective 0.9399270 Found heuristic solution: objective 0.9337221 Found heuristic solution: objective 0.8124551 Root relaxation: objective 8.652955e-02, 11472 iterations, 4.84 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.08653 0 1919 0.81246 0.08653 89.3% - 7s H 0 0 0.1489229 0.08653 41.9% - 14s 0 0 0.08861 0 1579 0.14892 0.08861 40.5% - 18s 0 0 0.08861 0 1570 0.14892 0.08861 40.5% - 19s 0 0 0.09014 0 1567 0.14892 0.09014 39.5% - 19s 0 0 0.09032 0 1559 0.14892 0.09032 39.4% - 19s 0 0 0.09085 0 1566 0.14892 0.09085 39.0% - 20s 0 0 0.09090 0 1581 0.14892 0.09090 39.0% - 20s 0 0 0.09090 0 1586 0.14892 0.09090 39.0% - 20s 0 0 0.09090 0 1504 0.14892 0.09090 39.0% - 20s 0 2 0.09091 0 1503 0.14892 0.09091 39.0% - 21s H 27 27 0.1461049 0.09153 37.4% 569 23s * 35 28 20 0.1432575 0.09153 36.1% 544 23s * 71 54 21 0.1425650 0.09215 35.4% 391 24s * 78 55 8 0.1424605 0.09215 35.3% 387 24s 100 56 0.12225 6 732 0.14246 0.09227 35.2% 374 25s * 128 65 17 0.1417370 0.09227 34.9% 313 25s * 129 64 17 0.1416261 0.09227 34.8% 311 25s H 136 62 0.1415015 0.09248 34.6% 313 25s * 153 60 9 0.1398701 0.09249 33.9% 305 25s * 154 56 9 0.1385550 0.09249 33.2% 303 25s Cutting planes: Gomory: 5 MIR: 8 Zero half: 1 Explored 216 nodes (95944 simplex iterations) in 27.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.385550431502e-01, best bound 1.385550431502e-01, gap 0.0%