Gurobi 5.0.1 (linux64) logging started Fri Nov 16 07:13:58 2012 Optimize a model with 12566 rows, 3782 columns and 41236 nonzeros Presolve time: 0.10s Presolved: 12566 rows, 3782 columns, 41505 nonzeros Variable types: 0 continuous, 3782 integer (3782 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 2.000000e+00, 7071 iterations, 1.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 122 36.00000 2.00000 94.4% - 1s H 0 0 15.0000000 2.00000 86.7% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 122 5.00000 2.00000 60.0% - 1s 0 0 2.00000 0 122 5.00000 2.00000 60.0% - 1s 0 0 2.00000 0 122 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 122 5.00000 2.00000 60.0% - 3s 0 0 2.00000 0 122 5.00000 2.00000 60.0% - 3s 0 0 2.00000 0 122 5.00000 2.00000 60.0% - 3s 0 2 2.00000 0 122 5.00000 2.00000 60.0% - 7s 1 3 2.50000 1 121 5.00000 2.00000 60.0% 8290 10s 2 4 3.00000 1 520 5.00000 2.50000 50.0% 18630 22s 7 9 3.16667 6 154 5.00000 2.50000 50.0% 6607 25s * 22 9 17 4.0000000 2.50000 37.5% 2404 26s 29 8 cutoff 5 4.00000 2.66667 33.3% 2230 30s 39 6 infeasible 4 4.00000 3.00000 25.0% 2109 35s 94 1 cutoff 4 4.00000 3.00000 25.0% 1129 40s Cutting planes: Clique: 49 Explored 100 nodes (126694 simplex iterations) in 41.66 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%