Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:49:45 2014 Optimize a model with 11936 rows, 6007 columns and 29645 nonzeros Presolve removed 77 rows and 0 columns Presolve time: 0.15s Presolved: 11859 rows, 6007 columns, 29568 nonzeros Variable types: 1 continuous, 6006 integer (6006 binary) Found heuristic solution: objective 0.9141697 Found heuristic solution: objective 0.9088005 Found heuristic solution: objective 0.8806392 Root relaxation: objective 4.788921e-03, 7807 iterations, 0.49 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00479 0 5306 0.88064 0.00479 99.5% - 0s H 0 0 0.4718284 0.00479 99.0% - 2s 0 0 0.00788 0 2515 0.47183 0.00788 98.3% - 3s 0 0 0.01508 0 2099 0.47183 0.01508 96.8% - 4s H 0 0 0.4646110 0.01508 96.8% - 4s 0 0 0.01533 0 2034 0.46461 0.01533 96.7% - 4s H 0 0 0.4352120 0.01533 96.5% - 4s 0 0 0.02395 0 1889 0.43521 0.02395 94.5% - 5s H 0 0 0.3744795 0.02395 93.6% - 5s 0 0 0.02709 0 1330 0.37448 0.02709 92.8% - 5s H 0 0 0.3579970 0.02709 92.4% - 5s H 0 0 0.3338506 0.02709 91.9% - 6s 0 1 0.02709 0 1307 0.33385 0.02709 91.9% - 14s H 1 1 0.2582371 0.02709 89.5% 2067 15s H 4 2 0.2216616 0.14700 33.7% 517 16s H 16 10 0.2213622 0.16436 25.8% 129 17s Explored 23 nodes (51276 simplex iterations) in 18.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.213622128844e-01, best bound 2.213622128844e-01, gap 0.0%