Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:27:54 2013 Optimize a model with 2580 rows, 5265 columns and 18025 nonzeros Presolve removed 5 rows and 5 columns Presolve time: 0.19s Presolved: 2575 rows, 5260 columns, 15520 nonzeros Variable types: 2760 continuous, 2500 integer (2500 binary) Root relaxation: objective 1.291780e+04, 64 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12917.7960 0 2 - 12917.7960 - - 0s 0 0 12922.0770 0 2 - 12922.0770 - - 0s 0 0 12922.2562 0 2 - 12922.2562 - - 0s 0 0 12923.7104 0 2 - 12923.7104 - - 0s 0 0 12924.9256 0 2 - 12924.9256 - - 0s 0 0 12925.9254 0 2 - 12925.9254 - - 0s 0 0 12926.7882 0 2 - 12926.7882 - - 0s 0 0 12927.5541 0 2 - 12927.5541 - - 0s 0 0 12927.7675 0 7 - 12927.7675 - - 0s 0 0 12928.2469 0 2 - 12928.2469 - - 0s 0 0 12928.3681 0 8 - 12928.3681 - - 0s 0 0 12928.8821 0 2 - 12928.8821 - - 0s 0 0 12929.3130 0 6 - 12929.3130 - - 0s 0 0 12929.4703 0 2 - 12929.4703 - - 0s 0 0 12929.4954 0 7 - 12929.4954 - - 0s 0 0 12929.8263 0 2 - 12929.8263 - - 0s 0 0 12930.0193 0 2 - 12930.0193 - - 0s 0 0 12930.2549 0 6 - 12930.2549 - - 0s 0 0 12930.5351 0 2 - 12930.5351 - - 0s 0 0 12930.7875 0 12 - 12930.7875 - - 1s 0 0 12930.9013 0 2 - 12930.9013 - - 1s 0 0 12930.9897 0 13 - 12930.9897 - - 1s 0 0 12931.0222 0 2 - 12931.0222 - - 1s 0 0 12931.2820 0 2 - 12931.2820 - - 1s 0 0 12931.2996 0 13 - 12931.2996 - - 1s 0 0 12931.3178 0 2 - 12931.3178 - - 1s 0 0 12931.4381 0 14 - 12931.4381 - - 1s 0 0 12931.4841 0 2 - 12931.4841 - - 1s 0 0 12931.4894 0 15 - 12931.4894 - - 1s 0 0 12931.6357 0 15 - 12931.6357 - - 1s 0 0 12931.6591 0 15 - 12931.6591 - - 1s 0 0 12931.7857 0 15 - 12931.7857 - - 1s 0 0 12931.8029 0 15 - 12931.8029 - - 1s 0 0 12931.8923 0 15 - 12931.8923 - - 1s 0 0 12931.9239 0 2 - 12931.9239 - - 1s 0 0 12931.9301 0 16 - 12931.9301 - - 1s 0 0 12931.9466 0 16 - 12931.9466 - - 1s 0 0 12931.9466 0 16 - 12931.9466 - - 1s 0 2 12931.9466 0 16 - 12931.9466 - - 2s * 18 2 9 12965.578650 12965.5786 0.0% 44.3 2s Cutting planes: Gomory: 1 Implied bound: 29 Flow cover: 7 Explored 19 nodes (1262 simplex iterations) in 2.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.296557864978e+04, best bound 1.296557864978e+04, gap 0.0%