Gurobi 5.0.1 (linux64) logging started Fri Nov 16 07:35:01 2012 Optimize a model with 11098 rows, 3906 columns and 36952 nonzeros Presolve time: 0.09s Presolved: 11098 rows, 3906 columns, 37196 nonzeros Variable types: 0 continuous, 3906 integer (3906 binary) Found heuristic solution: objective 37.0000000 Root relaxation: objective 2.000000e+00, 4079 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 124 37.00000 2.00000 94.6% - 1s H 0 0 12.0000000 2.00000 83.3% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 124 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 124 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 124 5.00000 2.00000 60.0% - 12s H 0 0 4.0000000 2.00000 50.0% - 12s 0 0 2.00000 0 124 4.00000 2.00000 50.0% - 17s 0 0 2.00000 0 124 4.00000 2.00000 50.0% - 22s 0 0 2.00000 0 124 4.00000 2.00000 50.0% - 27s 0 2 2.00000 0 124 4.00000 2.00000 50.0% - 45s 1 3 3.00000 1 673 4.00000 2.00000 50.0% 26681 52s 2 4 3.00000 1 662 4.00000 3.00000 25.0% 20608 58s 16 6 3.00000 3 116 4.00000 3.00000 25.0% 3037 60s 53 5 cutoff 5 4.00000 3.00000 25.0% 1403 66s 72 4 3.00000 5 116 4.00000 3.00000 25.0% 1218 70s 81 1 cutoff 7 4.00000 3.00000 25.0% 1394 75s Cutting planes: Clique: 139 Explored 83 nodes (193670 simplex iterations) in 76.64 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%