Gurobi 5.6.3 (linux64) logging started Tue Oct 7 21:42:13 2014 Optimize a model with 11881 rows, 11773 columns and 46764 nonzeros Presolve time: 0.21s Presolved: 11881 rows, 11773 columns, 46764 nonzeros Variable types: 1 continuous, 11772 integer (11772 binary) Found heuristic solution: objective 1.0713710 Found heuristic solution: objective 0.9186631 Found heuristic solution: objective 0.7552845 Root relaxation: objective 1.145305e-01, 5073 iterations, 0.54 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.11453 0 934 0.75528 0.11453 84.8% - 0s H 0 0 0.2474808 0.11453 53.7% - 1s 0 0 0.11513 0 920 0.24748 0.11513 53.5% - 1s 0 0 0.11513 0 904 0.24748 0.11513 53.5% - 2s H 0 0 0.2270459 0.11513 49.3% - 2s 0 0 0.11585 0 883 0.22705 0.11585 49.0% - 2s 0 0 0.11607 0 902 0.22705 0.11607 48.9% - 2s 0 0 0.11626 0 953 0.22705 0.11626 48.8% - 2s H 0 0 0.2266333 0.11626 48.7% - 2s 0 0 0.11630 0 961 0.22663 0.11630 48.7% - 2s 0 0 0.11630 0 962 0.22663 0.11630 48.7% - 2s 0 0 0.11630 0 937 0.22663 0.11630 48.7% - 2s H 0 0 0.2097436 0.11630 44.6% - 2s H 0 0 0.2020549 0.11630 42.4% - 3s 0 2 0.11762 0 765 0.20205 0.11762 41.8% - 3s H 27 27 0.2018755 0.12307 39.0% 357 3s H 54 42 0.1982693 0.12311 37.9% 246 3s * 79 60 24 0.1940405 0.12311 36.6% 199 4s H 82 57 0.1933789 0.12311 36.3% 193 4s Cutting planes: Gomory: 6 MIR: 16 Zero half: 1 Explored 142 nodes (40426 simplex iterations) in 4.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.933788529593e-01, best bound 1.933788529593e-01, gap 0.0%