Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:06:17 2014 Optimize a model with 13924 rows, 13807 columns and 54873 nonzeros Presolve time: 0.27s Presolved: 13924 rows, 13807 columns, 54873 nonzeros Variable types: 1 continuous, 13806 integer (13806 binary) Found heuristic solution: objective 1.2116014 Found heuristic solution: objective 1.1356735 Found heuristic solution: objective 0.9424260 Root relaxation: objective 1.159748e-01, 5589 iterations, 0.90 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.11597 0 1149 0.94243 0.11597 87.7% - 1s H 0 0 0.3227454 0.11597 64.1% - 1s H 0 0 0.3059365 0.11597 62.1% - 1s 0 0 0.11975 0 1149 0.30594 0.11975 60.9% - 2s 0 0 0.11975 0 1153 0.30594 0.11975 60.9% - 3s H 0 0 0.2885909 0.11975 58.5% - 3s H 0 0 0.2850621 0.11975 58.0% - 3s 0 0 0.11980 0 1205 0.28506 0.11980 58.0% - 3s H 0 0 0.2731352 0.11980 56.1% - 3s H 0 0 0.2591788 0.11980 53.8% - 3s 0 0 0.12136 0 1143 0.25918 0.12136 53.2% - 4s 0 2 0.12136 0 1143 0.25918 0.12136 53.2% - 18s H 1 2 0.1955812 0.12136 38.0% 961 19s 6 6 0.13293 0 800 0.19558 0.13293 32.0% 160 20s H 8 6 0.1936448 0.13448 30.6% 120 20s H 8 6 0.1911414 0.13448 29.6% 120 20s H 10 6 0.1899403 0.13999 26.3% 96.1 21s H 11 7 0.1894287 0.14085 25.6% 87.4 21s Cutting planes: Gomory: 1 MIR: 3 Zero half: 40 Explored 14 nodes (29888 simplex iterations) in 21.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.894286793913e-01, best bound 1.894286611570e-01, gap 0.0000%