Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:18:52 2012 Optimize a model with 10440 rows, 3422 columns and 34510 nonzeros Presolve time: 0.09s Presolved: 10440 rows, 3422 columns, 34817 nonzeros Variable types: 0 continuous, 3422 integer (3422 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 2.000000e+00, 5991 iterations, 0.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 116 39.00000 2.00000 94.9% - 1s H 0 0 13.0000000 2.00000 84.6% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 116 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 116 5.00000 2.00000 60.0% - 6s 0 0 2.00000 0 116 5.00000 2.00000 60.0% - 9s 0 0 2.00000 0 116 5.00000 2.00000 60.0% - 13s 0 0 2.00000 0 116 5.00000 2.00000 60.0% - 17s 0 0 2.00000 0 116 5.00000 2.00000 60.0% - 20s H 0 0 4.0000000 2.00000 50.0% - 22s 0 2 2.00000 0 116 4.00000 2.00000 50.0% - 28s 1 3 3.00000 1 458 4.00000 2.00000 50.0% 20939 33s 2 4 3.00000 1 476 4.00000 3.00000 25.0% 15946 38s 7 7 3.00000 4 122 4.00000 3.00000 25.0% 5513 40s 15 7 3.00000 3 116 4.00000 3.00000 25.0% 3730 45s 28 6 3.00000 3 239 4.00000 3.00000 25.0% 2790 50s 71 3 cutoff 6 4.00000 3.00000 25.0% 1570 57s 76 4 cutoff 5 4.00000 3.00000 25.0% 1633 60s 89 7 cutoff 10 4.00000 3.00000 25.0% 1633 65s 132 2 cutoff 7 4.00000 3.00000 25.0% 1322 70s Cutting planes: Clique: 125 Explored 135 nodes (240265 simplex iterations) in 72.46 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%