Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:37 2012 Optimize a model with 243 rows, 143 columns and 748 nonzeros Presolve time: 0.00s Presolved: 243 rows, 143 columns, 748 nonzeros Variable types: 0 continuous, 143 integer (143 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 0.000000e+00, 41 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 22 63.00000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.61111 0 23 59.00000 0.61111 99.0% - 0s H 0 0 58.0000000 0.61111 98.9% - 0s 0 0 1.31818 0 25 58.00000 1.31818 97.7% - 0s 0 0 1.45455 0 24 58.00000 1.45455 97.5% - 0s 0 0 1.47727 0 25 58.00000 1.47727 97.5% - 0s 0 0 1.47727 0 25 58.00000 1.47727 97.5% - 0s 0 0 1.49242 0 28 58.00000 1.49242 97.4% - 0s 0 0 1.61364 0 25 58.00000 1.61364 97.2% - 0s 0 0 1.64439 0 26 58.00000 1.64439 97.2% - 0s 0 0 1.65909 0 26 58.00000 1.65909 97.1% - 0s 0 0 1.65909 0 26 58.00000 1.65909 97.1% - 0s 0 0 1.66667 0 29 58.00000 1.66667 97.1% - 0s 0 0 1.66667 0 29 58.00000 1.66667 97.1% - 0s 0 2 1.75000 0 29 58.00000 1.75000 97.0% - 0s * 25 24 15 57.0000000 6.46429 88.7% 31.2 0s * 53 37 12 56.0000000 6.62143 88.2% 27.8 0s * 55 34 14 55.0000000 6.62143 88.0% 27.0 0s * 147 92 11 54.0000000 15.98611 70.4% 26.5 0s * 153 84 12 52.0000000 15.98611 69.3% 25.7 0s * 189 107 12 51.0000000 16.72727 67.2% 25.8 0s * 306 138 14 50.0000000 22.54545 54.9% 23.9 0s * 803 183 23 49.0000000 29.05882 40.7% 22.0 0s * 1420 129 23 48.0000000 33.50000 30.2% 19.8 0s Cutting planes: Gomory: 2 Zero half: 6 Explored 2352 nodes (42006 simplex iterations) in 1.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0%