Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:49:00 2012 Optimize a model with 12125 rows, 15750 columns and 51625 nonzeros Presolve removed 22 rows and 2750 columns Presolve time: 0.21s Presolved: 12103 rows, 13000 columns, 48875 nonzeros Variable types: 0 continuous, 13000 integer (13000 binary) Found heuristic solution: objective 40.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 11859 iterations, 0.84 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 132 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 433 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 132 3.00000 2.00000 33.3% - 15s 0 0 2.00000 0 234 3.00000 2.00000 33.3% - 23s 0 0 2.00000 0 256 3.00000 2.00000 33.3% - 30s 0 0 2.00000 0 275 3.00000 2.00000 33.3% - 37s 0 0 2.00000 0 132 3.00000 2.00000 33.3% - 44s 0 0 2.00000 0 236 3.00000 2.00000 33.3% - 52s 0 0 2.00000 0 236 3.00000 2.00000 33.3% - 58s 0 2 2.00000 0 236 3.00000 2.00000 33.3% - 75s 5 5 2.00000 1 234 3.00000 2.00000 33.3% 3930 91s 6 6 2.00000 1 132 3.00000 2.00000 33.3% 3275 100s 7 6 2.00000 1 132 3.00000 2.00000 33.3% 2807 109s 8 7 2.00000 1 132 3.00000 2.00000 33.3% 2456 125s 9 8 2.00000 1 132 3.00000 2.00000 33.3% 2184 135s 10 8 2.00000 1 132 3.00000 2.00000 33.3% 1965 149s 11 9 2.00000 1 132 3.00000 2.00000 33.3% 1787 153s 13 10 infeasible 16 3.00000 2.00000 33.3% 20882 159s 14 9 infeasible 16 3.00000 3.00000 0.0% 19704 160s Cutting planes: Gomory: 6 Zero half: 4 Explored 15 nodes (470830 simplex iterations) in 160.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%