Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:04:24 2012 Optimize a model with 387 rows, 256 columns and 1221 nonzeros Presolve time: 0.00s Presolved: 387 rows, 256 columns, 1221 nonzeros Variable types: 0 continuous, 256 integer (256 binary) Found heuristic solution: objective 92.0000000 Found heuristic solution: objective 88.0000000 Root relaxation: objective 0.000000e+00, 100 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 63 88.00000 0.00000 100% - 0s H 0 0 86.0000000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s 0 0 0.71655 0 65 65.00000 0.71655 98.9% - 0s 0 0 0.73469 0 65 65.00000 0.73469 98.9% - 0s 0 0 0.79819 0 65 65.00000 0.79819 98.8% - 0s 0 0 0.79819 0 65 65.00000 0.79819 98.8% - 0s 0 0 0.79819 0 65 65.00000 0.79819 98.8% - 0s 0 2 0.85714 0 65 65.00000 0.85714 98.7% - 0s * 37 35 21 59.0000000 4.70408 92.0% 34.4 0s * 70 58 18 54.0000000 4.70982 91.3% 31.4 0s * 105 81 21 53.0000000 8.45588 84.0% 31.6 0s * 163 126 23 52.0000000 8.85714 83.0% 31.1 0s * 262 195 17 51.0000000 11.51562 77.4% 30.8 0s * 453 233 20 49.0000000 15.19312 69.0% 26.9 0s * 1500 350 28 48.0000000 23.83333 50.3% 28.1 1s 5306 784 cutoff 24 48.00000 34.54839 28.0% 23.7 5s * 6075 762 26 47.0000000 35.60000 24.3% 23.2 5s Explored 11419 nodes (242900 simplex iterations) in 9.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%