Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:50:37 2012 Optimize a model with 6489 rows, 10712 columns and 29767 nonzeros Presolve removed 30 rows and 3090 columns Presolve time: 0.14s Presolved: 6459 rows, 7622 columns, 26677 nonzeros Variable types: 0 continuous, 7622 integer (7622 binary) Found heuristic solution: objective 28.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 5730 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 28 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 28 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 104 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 102 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 163 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 28 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 100 3.00000 2.00000 33.3% - 10s 0 0 2.00000 0 163 3.00000 2.00000 33.3% - 12s 0 0 2.00000 0 163 3.00000 2.00000 33.3% - 13s 0 2 2.00000 0 163 3.00000 2.00000 33.3% - 16s 9 8 2.00000 1 28 3.00000 2.00000 33.3% 1395 20s Cutting planes: Gomory: 5 Zero half: 1 Explored 14 nodes (238359 simplex iterations) in 22.97 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%