Gurobi 5.6.3 (linux64) logging started Tue Oct 7 21:00:18 2014 Optimize a model with 7744 rows, 7657 columns and 30363 nonzeros Presolve time: 0.14s Presolved: 7744 rows, 7657 columns, 30363 nonzeros Variable types: 1 continuous, 7656 integer (7656 binary) Found heuristic solution: objective 0.8227810 Found heuristic solution: objective 0.8204198 Found heuristic solution: objective 0.6966465 Root relaxation: objective 1.329190e-01, 2777 iterations, 0.25 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.13292 0 772 0.69665 0.13292 80.9% - 0s H 0 0 0.4119165 0.13292 67.7% - 0s 0 0 0.13819 0 616 0.41192 0.13819 66.5% - 1s 0 0 0.13819 0 760 0.41192 0.13819 66.5% - 1s H 0 0 0.3569005 0.13819 61.3% - 1s H 0 0 0.3450139 0.13819 59.9% - 1s 0 0 0.13819 0 619 0.34501 0.13819 59.9% - 2s H 0 0 0.3362643 0.13819 58.9% - 2s 0 2 0.13834 0 619 0.33626 0.13834 58.9% - 5s H 1 2 0.2323924 0.13834 40.5% 769 6s H 63 50 0.2256769 0.14608 35.3% 263 7s * 89 63 29 0.2223978 0.14619 34.3% 216 7s H 91 49 0.2074154 0.14619 29.5% 211 7s * 107 53 25 0.2022700 0.14654 27.6% 199 8s * 115 55 23 0.2021446 0.14662 27.5% 191 8s * 116 52 23 0.2011319 0.14662 27.1% 190 8s Cutting planes: Gomory: 4 Zero half: 1 Explored 169 nodes (43037 simplex iterations) in 8.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.011319302090e-01, best bound 2.011319302090e-01, gap 0.0%