Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:02:48 2012 Optimize a model with 781 rows, 127 columns and 1562 nonzeros Presolve removed 292 rows and 0 columns Presolve time: 0.00s Presolved: 489 rows, 127 columns, 1247 nonzeros Variable types: 0 continuous, 127 integer (127 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 4.307865e+01, 405 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43.07865 0 124 30.00000 43.07865 43.6% - 0s H 0 0 31.0000000 43.07865 39.0% - 0s 0 0 42.28444 0 126 31.00000 42.28444 36.4% - 0s 0 0 41.96875 0 126 31.00000 41.96875 35.4% - 0s 0 0 41.76633 0 124 31.00000 41.76633 34.7% - 0s 0 0 41.62461 0 123 31.00000 41.62461 34.3% - 0s 0 0 41.47687 0 124 31.00000 41.47687 33.8% - 0s 0 0 41.37789 0 124 31.00000 41.37789 33.5% - 0s 0 0 41.35190 0 124 31.00000 41.35190 33.4% - 0s 0 0 41.27584 0 125 31.00000 41.27584 33.1% - 0s 0 0 41.22000 0 122 31.00000 41.22000 33.0% - 0s 0 0 41.15106 0 126 31.00000 41.15106 32.7% - 0s 0 0 41.07831 0 125 31.00000 41.07831 32.5% - 0s 0 0 41.01578 0 125 31.00000 41.01578 32.3% - 0s 0 0 40.98339 0 126 31.00000 40.98339 32.2% - 0s 0 0 40.90416 0 126 31.00000 40.90416 31.9% - 0s 0 0 40.88257 0 127 31.00000 40.88257 31.9% - 0s 0 0 40.87393 0 127 31.00000 40.87393 31.9% - 0s 0 0 40.87393 0 123 31.00000 40.87393 31.9% - 0s 0 2 40.85660 0 123 31.00000 40.85660 31.8% - 0s H 11 11 33.0000000 40.81719 23.7% 46.8 0s * 366 132 14 34.0000000 38.91304 14.5% 36.8 0s 614 202 36.88889 12 124 34.00000 38.24919 12.5% 33.8 5s Cutting planes: Gomory: 1 Clique: 3 Zero half: 99 Explored 2580 nodes (81280 simplex iterations) in 9.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%