Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:56:01 2012 Optimize a model with 6099 rows, 11556 columns and 29425 nonzeros Presolve removed 35 rows and 3745 columns Presolve time: 0.13s Presolved: 6064 rows, 7811 columns, 25680 nonzeros Variable types: 0 continuous, 7811 integer (7811 binary) Found heuristic solution: objective 28.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 5335 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 36 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 130 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 102 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 165 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 36 3.00000 2.00000 33.3% - 4s 0 0 2.00000 0 112 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 165 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 36 3.00000 2.00000 33.3% - 10s 0 0 2.00000 0 112 3.00000 2.00000 33.3% - 11s 0 0 2.00000 0 112 3.00000 2.00000 33.3% - 12s 0 1 2.00000 0 112 3.00000 2.00000 33.3% - 13s 5 4 2.00000 1 36 3.00000 2.00000 33.3% 1535 15s 7 5 2.00000 1 56 3.00000 2.00000 33.3% 1096 22s Cutting planes: Gomory: 8 Zero half: 1 Explored 12 nodes (195728 simplex iterations) in 24.03 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%