Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:10:00 2012 Optimize a model with 9342 rows, 2970 columns and 30780 nonzeros Presolve time: 0.08s Presolved: 9342 rows, 2970 columns, 31214 nonzeros Variable types: 0 continuous, 2970 integer (2970 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 2.000000e+00, 5144 iterations, 0.67 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 108 35.00000 2.00000 94.3% - 0s H 0 0 12.0000000 2.00000 83.3% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 1s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 1s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 1s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 2s H 0 0 4.0000000 2.00000 50.0% - 2s 0 2 2.00000 0 108 4.00000 2.00000 50.0% - 3s 1 3 3.00000 1 710 4.00000 2.00655 49.8% 7100 6s 2 4 3.00000 1 675 4.00000 3.00000 25.0% 10802 11s 14 2 cutoff 5 4.00000 3.00000 25.0% 2777 15s 35 3 3.00000 2 185 4.00000 3.00000 25.0% 1730 20s Cutting planes: Clique: 32 Explored 45 nodes (81788 simplex iterations) in 22.29 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%