Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:53:55 2014 Optimize a model with 17161 rows, 17031 columns and 67730 nonzeros Presolve time: 0.33s Presolved: 17161 rows, 17031 columns, 67730 nonzeros Variable types: 1 continuous, 17030 integer (17030 binary) Found heuristic solution: objective 1.0622454 Found heuristic solution: objective 1.0411653 Found heuristic solution: objective 0.9184230 Root relaxation: objective 1.132957e-01, 5598 iterations, 0.99 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.11330 0 1124 0.91842 0.11330 87.7% - 1s H 0 0 0.5711705 0.11330 80.2% - 1s H 0 0 0.3105417 0.11330 63.5% - 3s 0 0 0.11416 0 1121 0.31054 0.11416 63.2% - 4s 0 0 0.11416 0 1120 0.31054 0.11416 63.2% - 5s H 0 0 0.2888754 0.11416 60.5% - 5s H 0 0 0.2651690 0.11416 56.9% - 5s 0 0 0.11416 0 1111 0.26517 0.11416 56.9% - 5s 0 2 0.11570 0 1111 0.26517 0.11570 56.4% - 18s H 1 2 0.1845846 0.11570 37.3% 1126 20s H 4 3 0.1827250 0.13552 25.8% 282 21s H 5 4 0.1812409 0.14309 21.0% 225 21s Cutting planes: MIR: 19 Zero half: 6 Explored 10 nodes (26818 simplex iterations) in 21.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.812408552746e-01, best bound 1.812408552746e-01, gap 0.0%