Gurobi 5.0.1 (linux64) logging started Fri Nov 16 13:08:58 2012 Optimize a model with 17593 rows, 5402 columns and 57889 nonzeros Presolve time: 0.14s Presolved: 17593 rows, 5402 columns, 58005 nonzeros Variable types: 0 continuous, 5402 integer (5402 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 2.000000e+00, 5120 iterations, 0.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 146 46.00000 2.00000 95.7% - 1s H 0 0 14.0000000 2.00000 85.7% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 4s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 13s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 22s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 34s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 42s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 50s 0 2 2.00000 0 146 5.00000 2.00000 60.0% - 78s 1 3 3.00000 1 555 5.00000 2.00000 60.0% 51129 92s 2 4 3.00000 1 895 5.00000 3.00000 40.0% 41183 105s 5 7 3.20000 3 659 5.00000 3.00000 40.0% 21730 115s H 28 1 4.0000000 3.00000 25.0% 4056 120s 60 6 cutoff 10 4.00000 3.00000 25.0% 2410 127s 62 4 cutoff 9 4.00000 3.00000 25.0% 2580 131s 64 2 cutoff 5 4.00000 3.00000 25.0% 2907 137s 65 1 cutoff 7 4.00000 3.00000 25.0% 3061 140s Cutting planes: Clique: 175 Zero half: 16 Explored 67 nodes (327316 simplex iterations) in 144.20 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%