Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:52 2012 Optimize a model with 363 rows, 84 columns and 726 nonzeros Presolve removed 128 rows and 0 columns Presolve time: 0.00s Presolved: 235 rows, 84 columns, 572 nonzeros Variable types: 0 continuous, 84 integer (84 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 3.100000e+01, 144 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 31.00000 0 58 24.00000 31.00000 29.2% - 0s H 0 0 25.0000000 31.00000 24.0% - 0s 0 0 30.42053 0 81 25.00000 30.42053 21.7% - 0s 0 0 29.78261 0 78 25.00000 29.78261 19.1% - 0s 0 0 29.52885 0 79 25.00000 29.52885 18.1% - 0s 0 0 29.50000 0 78 25.00000 29.50000 18.0% - 0s 0 0 29.37662 0 81 25.00000 29.37662 17.5% - 0s 0 0 29.33177 0 80 25.00000 29.33177 17.3% - 0s 0 0 29.29938 0 83 25.00000 29.29938 17.2% - 0s 0 0 29.25153 0 81 25.00000 29.25153 17.0% - 0s 0 0 29.10589 0 82 25.00000 29.10589 16.4% - 0s 0 0 29.01972 0 80 25.00000 29.01972 16.1% - 0s 0 0 28.92214 0 83 25.00000 28.92214 15.7% - 0s 0 0 28.90101 0 84 25.00000 28.90101 15.6% - 0s 0 0 28.90101 0 84 25.00000 28.90101 15.6% - 0s 0 2 28.89583 0 84 25.00000 28.89583 15.6% - 0s * 100 9 7 26.0000000 27.51205 5.82% 19.7 0s Cutting planes: Clique: 2 Zero half: 62 Explored 118 nodes (2832 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%