Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:12:41 2014 Optimize a model with 14400 rows, 14281 columns and 56763 nonzeros Presolve time: 0.26s Presolved: 14400 rows, 14281 columns, 56763 nonzeros Variable types: 1 continuous, 14280 integer (14280 binary) Found heuristic solution: objective 1.1498280 Found heuristic solution: objective 0.9472740 Found heuristic solution: objective 0.8573426 Root relaxation: objective 1.156063e-01, 5524 iterations, 0.73 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.11561 0 1066 0.85734 0.11561 86.5% - 1s H 0 0 0.4873736 0.11561 76.3% - 1s H 0 0 0.1998589 0.11561 42.2% - 1s 0 0 0.12187 0 855 0.19986 0.12187 39.0% - 2s 0 0 0.12187 0 890 0.19986 0.12187 39.0% - 2s 0 0 0.12655 0 847 0.19986 0.12655 36.7% - 2s 0 0 0.12820 0 844 0.19986 0.12820 35.9% - 2s 0 0 0.12826 0 876 0.19986 0.12826 35.8% - 2s 0 0 0.12835 0 857 0.19986 0.12835 35.8% - 3s 0 0 0.12920 0 909 0.19986 0.12920 35.4% - 3s 0 0 0.12922 0 916 0.19986 0.12922 35.3% - 3s 0 0 0.12922 0 872 0.19986 0.12922 35.3% - 3s 0 2 0.12925 0 872 0.19986 0.12925 35.3% - 3s H 27 25 0.1902921 0.13154 30.9% 291 4s * 42 26 8 0.1843580 0.13318 27.8% 265 4s * 49 22 6 0.1837687 0.13893 24.4% 245 4s Cutting planes: Gomory: 4 MIR: 16 Explored 72 nodes (31071 simplex iterations) in 4.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.837687369588e-01, best bound 1.837687369588e-01, gap 0.0%