Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:12:05 2012 Optimize a model with 2021 rows, 1892 columns and 7783 nonzeros Presolve removed 2 rows and 86 columns Presolve time: 0.03s Presolved: 2019 rows, 1806 columns, 7697 nonzeros Variable types: 0 continuous, 1806 integer (1806 binary) Found heuristic solution: objective 20.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 1914 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 82 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 126 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 125 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 125 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 126 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 125 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 125 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 82 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 125 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 125 3.00000 2.00000 33.3% - 2s 0 2 2.00000 0 125 3.00000 2.00000 33.3% - 3s 7 6 2.00000 1 82 3.00000 2.00000 33.3% 514 5s Cutting planes: Gomory: 7 Zero half: 1 Explored 10 nodes (69352 simplex iterations) in 6.77 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%