Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:09:04 2012 Optimize a model with 7656 rows, 13572 columns and 36076 nonzeros Presolve removed 41 rows and 4756 columns Presolve time: 0.15s Presolved: 7615 rows, 8816 columns, 31320 nonzeros Variable types: 0 continuous, 8816 integer (8816 binary) Found heuristic solution: objective 27.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 6391 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 40 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 293 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 40 3.00000 2.00000 33.3% - 4s 0 0 2.00000 0 124 3.00000 2.00000 33.3% - 5s 0 0 2.00000 0 173 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 116 3.00000 2.00000 33.3% - 11s 0 0 2.00000 0 118 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 116 3.00000 2.00000 33.3% - 17s 0 0 2.00000 0 173 3.00000 2.00000 33.3% - 20s 0 0 2.00000 0 40 3.00000 2.00000 33.3% - 21s 0 0 2.00000 0 112 3.00000 2.00000 33.3% - 22s 0 0 2.00000 0 112 3.00000 2.00000 33.3% - 23s 0 1 2.00000 0 112 3.00000 2.00000 33.3% - 25s 6 5 2.00000 1 40 3.00000 2.00000 33.3% 1183 31s 7 5 2.00000 1 116 3.00000 2.00000 33.3% 1014 35s 8 6 2.00000 1 40 3.00000 2.00000 33.3% 887 40s 10 7 2.00000 1 52 3.00000 2.00000 33.3% 710 45s Cutting planes: Gomory: 6 Explored 14 nodes (298071 simplex iterations) in 46.51 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%