Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:15:56 2012 Optimize a model with 12672 rows, 16512 columns and 54016 nonzeros Presolve removed 22 rows and 2816 columns Presolve time: 0.26s Presolved: 12650 rows, 13696 columns, 51200 nonzeros Variable types: 0 continuous, 13696 integer (13696 binary) Found heuristic solution: objective 42.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 18669 iterations, 3.11 seconds Total elapsed time = 6.63s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 142 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 714 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 154 3.00000 2.00000 33.3% - 19s 0 0 2.00000 0 254 3.00000 2.00000 33.3% - 29s 0 0 2.00000 0 289 3.00000 2.00000 33.3% - 36s 0 0 2.00000 0 245 3.00000 2.00000 33.3% - 45s 0 0 2.00000 0 249 3.00000 2.00000 33.3% - 54s 0 0 2.00000 0 286 3.00000 2.00000 33.3% - 69s 0 0 2.00000 0 286 3.00000 2.00000 33.3% - 78s 0 2 2.00000 0 286 3.00000 2.00000 33.3% - 98s 2 3 2.00000 1 286 3.00000 2.00000 33.3% 10794 100s 4 4 2.00000 1 142 3.00000 2.00000 33.3% 5397 108s 5 5 2.00000 1 358 3.00000 2.00000 33.3% 4318 123s 6 6 2.00000 1 142 3.00000 2.00000 33.3% 3598 134s 7 6 2.00000 1 260 3.00000 2.00000 33.3% 3084 154s Cutting planes: Gomory: 3 Zero half: 1 Explored 7 nodes (403596 simplex iterations) in 154.02 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%