Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:34:51 2014 Optimize a model with 6787 rows, 3423 columns and 16820 nonzeros Presolve removed 58 rows and 0 columns Presolve time: 0.13s Presolved: 6729 rows, 3423 columns, 16762 nonzeros Variable types: 1 continuous, 3422 integer (3422 binary) Found heuristic solution: objective 0.9359645 Found heuristic solution: objective 0.8799413 Found heuristic solution: objective 0.7729502 Root relaxation: objective 7.203977e-03, 4262 iterations, 0.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00720 0 2762 0.77295 0.00720 99.1% - 0s H 0 0 0.4821858 0.00720 98.5% - 0s 0 0 0.01230 0 1448 0.48219 0.01230 97.4% - 1s 0 0 0.02541 0 1087 0.48219 0.02541 94.7% - 1s H 0 0 0.4392926 0.02541 94.2% - 1s 0 0 0.03238 0 867 0.43929 0.03238 92.6% - 2s H 0 0 0.4317498 0.03238 92.5% - 2s 0 0 0.04133 0 842 0.43175 0.04133 90.4% - 2s H 0 0 0.4042341 0.04133 89.8% - 2s H 0 0 0.3682566 0.04133 88.8% - 2s 0 0 0.05902 0 474 0.36826 0.05902 84.0% - 2s H 0 0 0.3605732 0.05902 83.6% - 2s 0 1 0.05902 0 438 0.36057 0.05902 83.6% - 3s H 1 1 0.2932755 0.05902 79.9% 1062 4s H 4 2 0.2920477 0.20229 30.7% 266 4s H 6 4 0.2886705 0.21867 24.2% 177 4s 8 5 0.22952 0 212 0.28867 0.22952 20.5% 133 5s H 8 5 0.2858935 0.22992 19.6% 133 5s H 13 7 0.2786803 0.23630 15.2% 81.7 5s H 14 7 0.2742833 0.24326 11.3% 75.9 5s H 17 9 0.2690406 0.24920 7.37% 62.5 6s H 17 8 0.2653484 0.24920 6.09% 62.5 6s H 18 8 0.2645131 0.25219 4.66% 59.0 6s H 19 7 0.2616872 0.25708 1.76% 55.9 6s Cutting planes: Gomory: 1 MIR: 4 Zero half: 22 Explored 21 nodes (33599 simplex iterations) in 6.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.616871662906e-01, best bound 2.616871662906e-01, gap 0.0%