Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:06:06 2012 Optimize a model with 9085 rows, 13340 columns and 40135 nonzeros Presolve removed 31 rows and 3565 columns Presolve time: 0.15s Presolved: 9054 rows, 9775 columns, 36570 nonzeros Variable types: 0 continuous, 9775 integer (9775 binary) Found heuristic solution: objective 39.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 9236 iterations, 0.49 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 102 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 222 3.00000 2.00000 33.3% - 4s 0 0 2.00000 0 291 3.00000 2.00000 33.3% - 9s 0 0 2.00000 0 102 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 191 3.00000 2.00000 33.3% - 18s 0 0 2.00000 0 185 3.00000 2.00000 33.3% - 23s 0 0 2.00000 0 191 3.00000 2.00000 33.3% - 28s 0 0 2.00000 0 222 3.00000 2.00000 33.3% - 34s 0 0 2.00000 0 222 3.00000 2.00000 33.3% - 36s 0 2 2.00000 0 222 3.00000 2.00000 33.3% - 42s 4 4 2.00000 1 102 3.00000 2.00000 33.3% 4391 45s 5 5 2.00000 1 276 3.00000 2.00000 33.3% 3513 52s 6 6 2.00000 1 102 3.00000 2.00000 33.3% 2928 57s 7 6 2.00000 1 102 3.00000 2.00000 33.3% 2509 64s 8 7 2.00000 1 190 3.00000 2.00000 33.3% 2196 70s 9 8 2.00000 1 106 3.00000 2.00000 33.3% 1952 75s 10 8 2.00000 1 102 3.00000 2.00000 33.3% 1756 81s 11 9 2.00000 1 102 3.00000 2.00000 33.3% 1597 94s 12 10 2.00000 1 102 3.00000 2.00000 33.3% 1464 97s 14 11 infeasible 13 3.00000 2.00000 33.3% 16082 104s 15 10 infeasible 13 3.00000 3.00000 0.0% 15304 105s Cutting planes: Gomory: 13 Zero half: 11 Explored 16 nodes (420442 simplex iterations) in 105.71 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%