Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:15:28 2012 Optimize a model with 15006 rows, 6806 columns and 51496 nonzeros Presolve removed 984 rows and 0 columns Presolve time: 0.33s Presolved: 14022 rows, 6806 columns, 49200 nonzeros Variable types: 0 continuous, 6806 integer (6806 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 3.000000e+00, 12454 iterations, 2.54 seconds Total elapsed time = 5.55s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 128 47.00000 3.00000 93.6% - 6s H 0 0 5.0000000 3.00000 40.0% - 6s H 0 0 4.0000000 3.00000 25.0% - 6s 0 0 3.00000 0 129 4.00000 3.00000 25.0% - 6s 0 0 3.00000 0 92 4.00000 3.00000 25.0% - 7s 0 0 3.00000 0 153 4.00000 3.00000 25.0% - 14s 0 0 3.00000 0 146 4.00000 3.00000 25.0% - 18s 0 0 3.00000 0 138 4.00000 3.00000 25.0% - 22s 0 0 3.00000 0 136 4.00000 3.00000 25.0% - 24s 0 0 3.00000 0 110 4.00000 3.00000 25.0% - 25s 0 0 3.00000 0 110 4.00000 3.00000 25.0% - 26s 0 0 3.00000 0 105 4.00000 3.00000 25.0% - 27s 0 0 3.00000 0 86 4.00000 3.00000 25.0% - 28s 0 0 3.00000 0 84 4.00000 3.00000 25.0% - 29s 0 0 3.00000 0 72 4.00000 3.00000 25.0% - 31s 0 0 3.00000 0 78 4.00000 3.00000 25.0% - 32s 0 0 3.00000 0 110 4.00000 3.00000 25.0% - 38s 0 0 3.00000 0 110 4.00000 3.00000 25.0% - 39s 0 2 3.00000 0 110 4.00000 3.00000 25.0% - 41s 4 4 3.00000 1 126 4.00000 3.00000 25.0% 1723 49s 5 5 3.00000 1 66 4.00000 3.00000 25.0% 1378 51s 8 7 3.00000 1 60 4.00000 3.00000 25.0% 861 57s 9 8 3.00000 1 125 4.00000 3.00000 25.0% 766 63s 10 8 3.00000 1 89 4.00000 3.00000 25.0% 689 68s 11 9 3.00000 1 89 4.00000 3.00000 25.0% 626 70s 14 11 3.00000 1 72 4.00000 3.00000 25.0% 492 75s 18 14 infeasible 10 4.00000 3.00000 25.0% 12109 81s 21 16 3.00000 11 120 4.00000 3.00000 25.0% 10488 85s 28 16 3.00000 14 147 4.00000 3.00000 25.0% 8104 90s 30 17 3.00000 15 179 4.00000 3.00000 25.0% 7717 95s 52 5 3.00000 13 201 4.00000 3.00000 25.0% 4802 100s 63 4 infeasible 15 4.00000 3.00000 25.0% 4179 105s 75 2 infeasible 16 4.00000 3.00000 25.0% 3762 110s 82 1 infeasible 15 4.00000 3.00000 25.0% 3658 115s Cutting planes: Gomory: 2 Zero half: 30 Explored 86 nodes (527498 simplex iterations) in 118.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%