Gurobi 5.6.3 (linux64) logging started Wed Oct 8 00:37:02 2014 Optimize a model with 28224 rows, 28057 columns and 111723 nonzeros Presolve time: 0.74s Presolved: 28224 rows, 28057 columns, 111723 nonzeros Variable types: 1 continuous, 28056 integer (28056 binary) Found heuristic solution: objective 1.0150370 Found heuristic solution: objective 1.0124111 Found heuristic solution: objective 0.9365302 Root relaxation: objective 9.613663e-02, 8889 iterations, 1.86 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.09614 0 1496 0.93653 0.09614 89.7% - 3s H 0 0 0.2750714 0.09614 65.1% - 3s 0 0 0.09660 0 1499 0.27507 0.09660 64.9% - 5s 0 0 0.09660 0 1513 0.27507 0.09660 64.9% - 6s H 0 0 0.2745316 0.09660 64.8% - 6s H 0 0 0.2537255 0.09660 61.9% - 6s 0 0 0.09663 0 1492 0.25373 0.09663 61.9% - 7s H 0 0 0.2520433 0.09663 61.7% - 7s H 0 0 0.2396400 0.09663 59.7% - 7s 0 0 0.09705 0 1503 0.23964 0.09705 59.5% - 8s 0 2 0.09707 0 1502 0.23964 0.09707 59.5% - 37s H 1 2 0.1597686 0.09707 39.2% 1268 40s H 15 11 0.1593313 0.11563 27.4% 84.5 43s H 15 10 0.1592591 0.11563 27.4% 84.5 43s * 43 26 25 0.1586122 0.11777 25.7% 579 44s * 86 36 30 0.1557910 0.11777 24.4% 351 44s H 100 38 0.1544202 0.11906 22.9% 329 44s 109 37 0.13440 17 613 0.15442 0.11907 22.9% 315 45s * 118 38 23 0.1540130 0.11907 22.7% 299 45s * 119 37 23 0.1539911 0.11907 22.7% 296 45s H 147 7 0.1530681 0.14203 7.21% 261 45s Cutting planes: Gomory: 3 MIR: 73 Zero half: 15 Explored 155 nodes (62477 simplex iterations) in 45.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.530681497047e-01, best bound 1.530681497047e-01, gap 0.0%