Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:51:02 2012 Optimize a model with 6695 rows, 10712 columns and 30385 nonzeros Presolve removed 30 rows and 3090 columns Presolve time: 0.14s Presolved: 6665 rows, 7622 columns, 27295 nonzeros Variable types: 0 continuous, 7622 integer (7622 binary) Found heuristic solution: objective 31.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 8378 iterations, 0.57 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 315 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 182 3.00000 2.00000 33.3% - 5s 0 0 2.00000 0 185 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 198 3.00000 2.00000 33.3% - 10s 0 0 2.00000 0 248 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 15s 0 0 2.00000 0 173 3.00000 2.00000 33.3% - 18s 0 0 2.00000 0 171 3.00000 2.00000 33.3% - 19s 0 2 2.00000 0 171 3.00000 2.00000 33.3% - 21s 5 5 2.00000 1 175 3.00000 2.00000 33.3% 1604 28s 6 6 2.00000 1 171 3.00000 2.00000 33.3% 1337 34s 7 6 2.00000 1 98 3.00000 2.00000 33.3% 1146 37s 8 7 2.00000 1 98 3.00000 2.00000 33.3% 1003 40s 10 8 2.00000 1 98 3.00000 2.00000 33.3% 802 50s Cutting planes: Gomory: 20 Zero half: 2 Explored 15 nodes (269139 simplex iterations) in 54.75 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%