Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:32:20 2014 Optimize a model with 5461 rows, 2757 columns and 13520 nonzeros Presolve removed 52 rows and 0 columns Presolve time: 0.12s Presolved: 5409 rows, 2757 columns, 13468 nonzeros Variable types: 1 continuous, 2756 integer (2756 binary) Found heuristic solution: objective 0.8265328 Found heuristic solution: objective 0.8240852 Found heuristic solution: objective 0.6735891 Root relaxation: objective 7.549972e-03, 3360 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00755 0 2006 0.67359 0.00755 98.9% - 0s H 0 0 0.3314758 0.00755 97.7% - 0s 0 0 0.02297 0 604 0.33148 0.02297 93.1% - 0s 0 0 0.09412 0 417 0.33148 0.09412 71.6% - 1s 0 0 0.09505 0 376 0.33148 0.09505 71.3% - 1s H 0 0 0.3271636 0.09505 70.9% - 1s H 0 0 0.3188203 0.09505 70.2% - 1s 0 0 0.10113 0 377 0.31882 0.10113 68.3% - 1s H 0 0 0.2955778 0.10113 65.8% - 1s 0 0 0.13295 0 380 0.29558 0.13295 55.0% - 1s H 0 0 0.2746636 0.13295 51.6% - 1s 0 0 0.16582 0 192 0.27466 0.16582 39.6% - 1s H 0 0 0.2586709 0.16582 35.9% - 1s 0 1 0.16934 0 192 0.25867 0.16934 34.5% - 1s H 1 1 0.2567323 0.16934 34.0% 598 1s * 3 2 12 0.2497730 0.24977 0.00% 199 1s Explored 3 nodes (15681 simplex iterations) in 1.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.497730110523e-01, best bound 2.497730110523e-01, gap 0.0%