Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:44:55 2012 Optimize a model with 5723 rows, 9506 columns and 26287 nonzeros Presolve removed 27 rows and 2619 columns Presolve time: 0.14s Presolved: 5696 rows, 6887 columns, 23668 nonzeros Variable types: 0 continuous, 6887 integer (6887 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 2.000000e+00, 6217 iterations, 0.32 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 48 24.00000 2.00000 91.7% - 1s H 0 0 3.0000000 2.00000 33.3% - 1s 0 0 2.00000 0 128 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 118 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 167 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 48 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 167 3.00000 2.00000 33.3% - 9s 0 0 2.00000 0 124 3.00000 2.00000 33.3% - 10s 0 0 2.00000 0 48 3.00000 2.00000 33.3% - 11s 0 0 2.00000 0 116 3.00000 2.00000 33.3% - 12s 0 0 2.00000 0 124 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 124 3.00000 2.00000 33.3% - 14s 0 2 2.00000 0 124 3.00000 2.00000 33.3% - 16s 6 6 2.00000 1 123 3.00000 2.00000 33.3% 1507 23s 7 6 2.00000 1 48 3.00000 2.00000 33.3% 1292 28s 8 7 2.00000 1 54 3.00000 2.00000 33.3% 1130 35s Cutting planes: Gomory: 11 Zero half: 1 Explored 13 nodes (224981 simplex iterations) in 37.37 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%