Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:58:09 2014 Optimize a model with 7396 rows, 7311 columns and 28985 nonzeros Presolve time: 0.13s Presolved: 7396 rows, 7311 columns, 28985 nonzeros Variable types: 1 continuous, 7310 integer (7310 binary) Found heuristic solution: objective 0.7847754 Found heuristic solution: objective 0.7803520 Found heuristic solution: objective 0.7726670 Root relaxation: objective 1.336626e-01, 3170 iterations, 0.25 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.13366 0 741 0.77267 0.13366 82.7% - 0s H 0 0 0.4022184 0.13366 66.8% - 0s H 0 0 0.3948388 0.13366 66.1% - 0s H 0 0 0.2634258 0.13366 49.3% - 0s 0 0 0.13534 0 705 0.26343 0.13534 48.6% - 0s 0 0 0.13534 0 685 0.26343 0.13534 48.6% - 1s 0 0 0.13558 0 726 0.26343 0.13558 48.5% - 1s 0 0 0.13723 0 707 0.26343 0.13723 47.9% - 1s 0 0 0.13827 0 729 0.26343 0.13827 47.5% - 1s 0 0 0.13840 0 700 0.26343 0.13840 47.5% - 1s 0 0 0.13840 0 659 0.26343 0.13840 47.5% - 1s 0 2 0.13841 0 659 0.26343 0.13841 47.5% - 1s H 27 27 0.2593989 0.14102 45.6% 229 2s H 54 52 0.2540933 0.14102 44.5% 156 2s * 75 60 48 0.2467718 0.14102 42.9% 116 2s * 77 54 49 0.2425955 0.14102 41.9% 113 2s H 108 79 0.2400506 0.14170 41.0% 109 2s * 122 83 9 0.2368884 0.14203 40.0% 109 2s H 125 80 0.2306853 0.14203 38.4% 108 2s H 135 68 0.2176572 0.14334 34.1% 107 2s * 146 61 11 0.2176016 0.14564 33.1% 111 2s * 147 60 11 0.2154529 0.14564 32.4% 110 2s * 150 57 10 0.2142495 0.14564 32.0% 109 2s Cutting planes: Gomory: 4 MIR: 7 Explored 208 nodes (27927 simplex iterations) in 2.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.142494892744e-01, best bound 2.142494892744e-01, gap 0.0%