Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:56:28 2012 Optimize a model with 7490 rows, 11556 columns and 33598 nonzeros Presolve removed 28 rows and 2996 columns Presolve time: 0.14s Presolved: 7462 rows, 8560 columns, 30602 nonzeros Variable types: 0 continuous, 8560 integer (8560 binary) Found heuristic solution: objective 34.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 9759 iterations, 0.78 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 106 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 197 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 187 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 187 3.00000 2.00000 33.3% - 9s 0 0 2.00000 0 187 3.00000 2.00000 33.3% - 12s 0 0 2.00000 0 187 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 214 3.00000 2.00000 33.3% - 18s 0 0 2.00000 0 214 3.00000 2.00000 33.3% - 20s 0 2 2.00000 0 214 3.00000 2.00000 33.3% - 22s 4 4 2.00000 1 106 3.00000 2.00000 33.3% 3334 26s 6 6 2.00000 1 106 3.00000 2.00000 33.3% 2223 33s 7 6 2.00000 1 106 3.00000 2.00000 33.3% 1905 36s 9 8 2.00000 1 106 3.00000 2.00000 33.3% 1482 47s Cutting planes: Gomory: 5 Zero half: 5 Explored 9 nodes (250058 simplex iterations) in 47.87 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%