Gurobi 5.0.1 (linux64) logging started Sun Dec 9 21:52:26 2012 Optimize a model with 1110 rows, 1080 columns and 3577 nonzeros Presolve removed 52 rows and 31 columns Presolve time: 0.01s Presolved: 1058 rows, 1049 columns, 3456 nonzeros Variable types: 699 continuous, 350 integer (350 binary) Root relaxation: objective 1.004583e+05, 532 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 100458.289 0 178 - 100458.289 - - 0s H 0 0 160277.00000 100458.289 37.3% - 0s 0 0 121959.363 0 35 160277.000 121959.363 23.9% - 0s 0 0 122406.778 0 41 160277.000 122406.778 23.6% - 0s 0 0 122555.224 0 34 160277.000 122555.224 23.5% - 0s 0 0 122574.948 0 26 160277.000 122574.948 23.5% - 0s 0 0 122583.062 0 25 160277.000 122583.062 23.5% - 0s H 0 0 123483.00000 122583.062 0.73% - 0s 0 2 122583.127 0 25 123483.000 122583.127 0.73% - 0s H 54 28 123299.00000 122583.127 0.58% 3.4 0s H 2707 983 123264.00000 122961.509 0.25% 5.1 1s 9380 3070 cutoff 50 123264.000 123076.972 0.15% 4.9 5s 20405 4745 cutoff 40 123264.000 123146.025 0.10% 4.6 10s 31069 3518 123263.553 38 14 123264.000 123201.788 0.05% 4.5 15s Cutting planes: Gomory: 61 Cover: 10 Implied bound: 1 Flow cover: 159 Flow path: 91 Explored 36709 nodes (158782 simplex iterations) in 18.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.232640000000e+05, best bound 1.232516960655e+05, gap 0.0100%