Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:56:54 2012 Optimize a model with 279 rows, 163 columns and 858 nonzeros Presolve time: 0.00s Presolved: 279 rows, 163 columns, 858 nonzeros Variable types: 0 continuous, 163 integer (163 binary) Found heuristic solution: objective 72.0000000 Found heuristic solution: objective 68.0000000 Root relaxation: objective 0.000000e+00, 47 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 24 68.00000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s 0 0 0.75000 0 25 66.00000 0.75000 98.9% - 0s 0 0 1.30000 0 26 66.00000 1.30000 98.0% - 0s 0 0 1.62500 0 27 66.00000 1.62500 97.5% - 0s H 0 0 62.0000000 1.62500 97.4% - 0s 0 0 1.82292 0 28 62.00000 1.82292 97.1% - 0s 0 0 1.87500 0 27 62.00000 1.87500 97.0% - 0s 0 0 1.91819 0 40 62.00000 1.91819 96.9% - 0s 0 0 1.93750 0 27 62.00000 1.93750 96.9% - 0s 0 0 1.99780 0 31 62.00000 1.99780 96.8% - 0s 0 0 2.01682 0 31 62.00000 2.01682 96.7% - 0s 0 0 2.03981 0 40 62.00000 2.03981 96.7% - 0s 0 0 2.05492 0 42 62.00000 2.05492 96.7% - 0s 0 0 2.09375 0 31 62.00000 2.09375 96.6% - 0s 0 0 2.10673 0 32 62.00000 2.10673 96.6% - 0s H 0 0 61.0000000 2.10673 96.5% - 0s 0 2 2.23654 0 32 61.00000 2.23654 96.3% - 0s * 53 41 13 59.0000000 9.59524 83.7% 26.2 0s * 197 136 21 58.0000000 19.00000 67.2% 26.0 0s * 776 272 27 57.0000000 32.33333 43.3% 22.2 0s * 1163 198 25 56.0000000 34.83333 37.8% 21.5 0s * 1419 158 24 53.0000000 36.00000 32.1% 21.3 0s Cutting planes: Gomory: 3 Mod-K: 6 Explored 2162 nodes (43608 simplex iterations) in 1.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.300000000000e+01, best bound 5.300000000000e+01, gap 0.0%