Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:42:00 2014 Optimize a model with 4761 rows, 4693 columns and 18564 nonzeros Presolve time: 0.12s Presolved: 4761 rows, 4693 columns, 18564 nonzeros Variable types: 1 continuous, 4692 integer (4692 binary) Found heuristic solution: objective 0.7388533 Found heuristic solution: objective 0.7352541 Found heuristic solution: objective 0.7166753 Root relaxation: objective 1.562148e-01, 2414 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.15621 0 583 0.71668 0.15621 78.2% - 0s H 0 0 0.6267948 0.15621 75.1% - 0s H 0 0 0.2656151 0.15621 41.2% - 0s 0 0 0.16203 0 450 0.26562 0.16203 39.0% - 0s 0 0 0.16203 0 534 0.26562 0.16203 39.0% - 0s 0 0 0.16686 0 450 0.26562 0.16686 37.2% - 0s 0 0 0.17161 0 525 0.26562 0.17161 35.4% - 0s 0 0 0.17180 0 520 0.26562 0.17180 35.3% - 0s 0 0 0.17194 0 509 0.26562 0.17194 35.3% - 0s 0 0 0.17194 0 480 0.26562 0.17194 35.3% - 1s H 0 0 0.2638208 0.17194 34.8% - 1s 0 2 0.17244 0 490 0.26382 0.17244 34.6% - 1s * 22 20 14 0.2615479 0.17344 33.7% 147 1s H 27 19 0.2592104 0.18607 28.2% 132 1s * 29 18 4 0.2528095 0.18607 26.4% 130 1s * 35 18 5 0.2514156 0.18607 26.0% 109 1s * 48 14 6 0.2513835 0.19032 24.3% 99.0 1s * 52 12 5 0.2510354 0.19035 24.2% 94.7 1s * 54 12 6 0.2508912 0.19035 24.1% 91.9 1s * 55 11 6 0.2501169 0.19035 23.9% 90.2 1s * 57 9 6 0.2494037 0.20732 16.9% 91.1 1s H 62 4 0.2483638 0.22942 7.63% 86.9 1s Cutting planes: Gomory: 5 MIR: 6 Zero half: 2 Explored 67 nodes (14264 simplex iterations) in 1.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.483638197561e-01, best bound 2.483638197561e-01, gap 0.0%