Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:30:37 2014 Optimize a model with 2304 rows, 2257 columns and 8883 nonzeros Presolve time: 0.05s Presolved: 2304 rows, 2257 columns, 8883 nonzeros Variable types: 1 continuous, 2256 integer (2256 binary) Found heuristic solution: objective 1.0895837 Found heuristic solution: objective 0.8891735 Found heuristic solution: objective 0.6491918 Root relaxation: objective 1.816051e-01, 1377 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.18161 0 405 0.64919 0.18161 72.0% - 0s H 0 0 0.4394073 0.18161 58.7% - 0s H 0 0 0.3862314 0.18161 53.0% - 0s 0 0 0.18354 0 425 0.38623 0.18354 52.5% - 0s 0 0 0.18354 0 406 0.38623 0.18354 52.5% - 0s H 0 0 0.3578308 0.18354 48.7% - 0s 0 0 0.18421 0 399 0.35783 0.18421 48.5% - 0s 0 0 0.19000 0 383 0.35783 0.19000 46.9% - 0s 0 0 0.19014 0 366 0.35783 0.19014 46.9% - 0s H 0 0 0.3166108 0.19014 39.9% - 0s 0 0 0.19410 0 277 0.31661 0.19410 38.7% - 0s H 0 0 0.3130462 0.19410 38.0% - 0s H 0 0 0.3091552 0.19410 37.2% - 0s 0 2 0.19844 0 239 0.30916 0.19844 35.8% - 0s * 13 13 8 0.2995629 0.20322 32.2% 192 0s * 18 10 2 0.2986119 0.23853 20.1% 153 0s * 19 9 2 0.2980751 0.23853 20.0% 145 0s * 25 0 5 0.2754410 0.27544 0.00% 115 0s Cutting planes: Gomory: 1 Explored 26 nodes (8469 simplex iterations) in 0.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.754410344907e-01, best bound 2.754410344907e-01, gap 0.0%