Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:47:06 2012 Optimize a model with 9750 rows, 15750 columns and 44500 nonzeros Presolve removed 35 rows and 4375 columns Presolve time: 0.16s Presolved: 9715 rows, 11375 columns, 40125 nonzeros Variable types: 0 continuous, 11375 integer (11375 binary) Found heuristic solution: objective 41.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 7957 iterations, 0.22 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 66 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 174 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 257 3.00000 2.00000 33.3% - 7s 0 0 2.00000 0 189 3.00000 2.00000 33.3% - 11s 0 0 2.00000 0 165 3.00000 2.00000 33.3% - 17s 0 0 2.00000 0 153 3.00000 2.00000 33.3% - 21s 0 0 2.00000 0 159 3.00000 2.00000 33.3% - 27s 0 0 2.00000 0 157 3.00000 2.00000 33.3% - 31s 0 0 2.00000 0 159 3.00000 2.00000 33.3% - 36s 0 0 2.00000 0 157 3.00000 2.00000 33.3% - 40s 0 0 2.00000 0 159 3.00000 2.00000 33.3% - 45s 0 0 2.00000 0 159 3.00000 2.00000 33.3% - 46s 0 2 2.00000 0 159 3.00000 2.00000 33.3% - 50s 5 5 2.00000 1 171 3.00000 2.00000 33.3% 2678 55s 6 6 2.00000 1 149 3.00000 2.00000 33.3% 2232 63s 7 6 2.00000 1 164 3.00000 2.00000 33.3% 1913 70s 8 7 2.00000 1 66 3.00000 2.00000 33.3% 1674 76s 9 8 2.00000 1 66 3.00000 2.00000 33.3% 1488 82s 10 8 2.00000 1 66 3.00000 2.00000 33.3% 1339 91s 11 9 2.00000 1 66 3.00000 2.00000 33.3% 1217 98s 13 10 infeasible 15 3.00000 2.00000 33.3% 18157 111s Cutting planes: Gomory: 9 Zero half: 8 Explored 15 nodes (470721 simplex iterations) in 112.67 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%