Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:37:33 2012 Optimize a model with 14586 rows, 6162 columns and 49608 nonzeros Presolve time: 0.12s Presolved: 14586 rows, 6162 columns, 49736 nonzeros Variable types: 0 continuous, 6162 integer (6162 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 2.000000e+00, 6814 iterations, 0.50 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 156 48.00000 2.00000 95.8% - 4s H 0 0 12.0000000 2.00000 83.3% - 4s H 0 0 4.0000000 2.00000 50.0% - 4s 0 0 2.00000 0 156 4.00000 2.00000 50.0% - 6s 0 0 2.00000 0 156 4.00000 2.00000 50.0% - 16s 0 0 2.00000 0 156 4.00000 2.00000 50.0% - 26s 0 0 2.00000 0 156 4.00000 2.00000 50.0% - 35s 0 0 2.00000 0 156 4.00000 2.00000 50.0% - 45s 0 0 2.00000 0 156 4.00000 2.00000 50.0% - 53s 0 2 2.00000 0 156 4.00000 2.00000 50.0% - 77s 1 3 2.50000 1 806 4.00000 2.00000 50.0% 57620 96s 2 4 2.50000 1 1046 4.00000 2.50000 37.5% 36685 105s 19 10 3.00000 4 149 4.00000 2.50000 37.5% 4820 110s 54 9 3.00000 4 126 4.00000 2.50000 37.5% 2076 115s 116 15 3.00000 5 138 4.00000 2.50000 37.5% 1115 120s 171 17 3.00000 10 108 4.00000 3.00000 25.0% 877 127s 200 14 3.00000 9 130 4.00000 3.00000 25.0% 770 144s 252 12 cutoff 10 4.00000 3.00000 25.0% 649 145s Cutting planes: Clique: 84 Explored 351 nodes (309080 simplex iterations) in 145.78 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%