Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:39:14 2012 Optimize a model with 9963 rows, 15252 columns and 44649 nonzeros Presolve removed 30 rows and 3690 columns Presolve time: 0.17s Presolved: 9933 rows, 11562 columns, 40959 nonzeros Variable types: 0 continuous, 11562 integer (11562 binary) Found heuristic solution: objective 36.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 8747 iterations, 0.30 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 74 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 185 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 182 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 274 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 235 3.00000 2.00000 33.3% - 18s 0 0 2.00000 0 74 3.00000 2.00000 33.3% - 24s 0 0 2.00000 0 169 3.00000 2.00000 33.3% - 28s 0 0 2.00000 0 226 3.00000 2.00000 33.3% - 34s 0 0 2.00000 0 74 3.00000 2.00000 33.3% - 37s 0 0 2.00000 0 165 3.00000 2.00000 33.3% - 41s 0 0 2.00000 0 165 3.00000 2.00000 33.3% - 44s 0 2 2.00000 0 165 3.00000 2.00000 33.3% - 49s 2 3 2.00000 1 165 3.00000 2.00000 33.3% 8378 50s 5 5 2.00000 1 182 3.00000 2.00000 33.3% 3351 57s 6 6 2.00000 1 74 3.00000 2.00000 33.3% 2793 63s 7 6 2.00000 1 74 3.00000 2.00000 33.3% 2394 70s 8 7 2.00000 1 84 3.00000 2.00000 33.3% 2094 80s 9 8 2.00000 1 74 3.00000 2.00000 33.3% 1862 85s Cutting planes: Gomory: 16 Zero half: 1 Explored 13 nodes (393357 simplex iterations) in 88.65 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%