Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:57:27 2012 Optimize a model with 6804 rows, 11772 columns and 31752 nonzeros Presolve removed 35 rows and 3780 columns Presolve time: 0.14s Presolved: 6769 rows, 7992 columns, 27972 nonzeros Variable types: 0 continuous, 7992 integer (7992 binary) Found heuristic solution: objective 34.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 6228 iterations, 0.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 48 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 140 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 118 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 128 3.00000 2.00000 33.3% - 4s 0 0 2.00000 0 173 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 48 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 120 3.00000 2.00000 33.3% - 10s 0 0 2.00000 0 198 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 173 3.00000 2.00000 33.3% - 14s 0 2 2.00000 0 173 3.00000 2.00000 33.3% - 17s 6 6 2.00000 1 198 3.00000 2.00000 33.3% 1752 22s 7 6 2.00000 1 48 3.00000 2.00000 33.3% 1502 26s 9 8 2.00000 1 48 3.00000 2.00000 33.3% 1168 33s Cutting planes: Gomory: 2 Explored 9 nodes (213549 simplex iterations) in 33.13 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%