Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:07:39 2012 Optimize a model with 830 rows, 130 columns and 1660 nonzeros Presolve removed 308 rows and 0 columns Presolve time: 0.01s Presolved: 522 rows, 130 columns, 1336 nonzeros Variable types: 0 continuous, 130 integer (130 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.325255e+01, 358 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43.25255 0 125 29.00000 43.25255 49.1% - 0s 0 0 42.56000 0 129 29.00000 42.56000 46.8% - 0s 0 0 42.10894 0 129 29.00000 42.10894 45.2% - 0s 0 0 41.94361 0 129 29.00000 41.94361 44.6% - 0s 0 0 41.58531 0 129 29.00000 41.58531 43.4% - 0s 0 0 41.52139 0 129 29.00000 41.52139 43.2% - 0s 0 0 41.26325 0 130 29.00000 41.26325 42.3% - 0s 0 0 41.10171 0 130 29.00000 41.10171 41.7% - 0s H 0 0 31.0000000 41.10171 32.6% - 0s 0 0 40.83722 0 128 31.00000 40.83722 31.7% - 0s 0 0 40.78045 0 129 31.00000 40.78045 31.5% - 0s 0 0 40.70743 0 130 31.00000 40.70743 31.3% - 0s 0 0 40.67216 0 127 31.00000 40.67216 31.2% - 0s 0 0 40.63568 0 129 31.00000 40.63568 31.1% - 0s 0 0 40.61171 0 129 31.00000 40.61171 31.0% - 0s 0 0 40.60919 0 130 31.00000 40.60919 31.0% - 0s 0 0 40.60919 0 130 31.00000 40.60919 31.0% - 0s 0 2 40.60806 0 129 31.00000 40.60806 31.0% - 0s * 12 12 9 33.0000000 40.60561 23.0% 65.1 0s H 138 40 34.0000000 39.58209 16.4% 39.1 0s 612 148 36.25000 18 129 34.00000 37.97384 11.7% 33.7 5s Cutting planes: Gomory: 4 Clique: 6 Zero half: 67 Explored 2499 nodes (82550 simplex iterations) in 9.15 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%