Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:50:30 2014 Optimize a model with 6241 rows, 6163 columns and 24414 nonzeros Presolve time: 0.13s Presolved: 6241 rows, 6163 columns, 24414 nonzeros Variable types: 1 continuous, 6162 integer (6162 binary) Found heuristic solution: objective 0.9232494 Found heuristic solution: objective 0.9163269 Found heuristic solution: objective 0.8443476 Root relaxation: objective 1.424871e-01, 2469 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.14249 0 672 0.84435 0.14249 83.1% - 0s H 0 0 0.2530847 0.14249 43.7% - 0s 0 0 0.15115 0 534 0.25308 0.15115 40.3% - 0s 0 0 0.15115 0 537 0.25308 0.15115 40.3% - 1s 0 0 0.15385 0 532 0.25308 0.15385 39.2% - 1s 0 0 0.15765 0 484 0.25308 0.15765 37.7% - 1s 0 0 0.15797 0 491 0.25308 0.15797 37.6% - 1s 0 0 0.15869 0 469 0.25308 0.15869 37.3% - 1s 0 0 0.15876 0 451 0.25308 0.15876 37.3% - 1s 0 0 0.15877 0 457 0.25308 0.15877 37.3% - 1s 0 0 0.15877 0 432 0.25308 0.15877 37.3% - 1s 0 2 0.15897 0 432 0.25308 0.15897 37.2% - 1s * 51 51 33 0.2477355 0.16383 33.9% 101 1s * 52 46 33 0.2438482 0.16383 32.8% 99.5 1s * 60 44 4 0.2430017 0.16642 31.5% 92.0 1s * 61 41 4 0.2410629 0.16642 31.0% 90.5 1s * 63 41 5 0.2409170 0.16642 30.9% 89.9 1s * 68 44 9 0.2407466 0.16642 30.9% 84.8 1s * 71 43 10 0.2397370 0.16642 30.6% 82.0 1s * 76 41 4 0.2396482 0.16704 30.3% 88.7 1s * 77 34 5 0.2362654 0.16704 29.3% 88.5 1s * 79 34 6 0.2356476 0.16704 29.1% 87.1 1s * 81 32 7 0.2346891 0.16704 28.8% 85.1 1s H 84 29 0.2314876 0.17412 24.8% 83.2 1s * 90 33 8 0.2310859 0.17412 24.7% 84.0 1s * 105 14 15 0.2290376 0.21539 5.96% 84.6 1s Cutting planes: Gomory: 7 MIR: 4 Zero half: 2 Explored 120 nodes (20656 simplex iterations) in 1.76 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.290375636725e-01, best bound 2.290375636725e-01, gap 0.0%