Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:03:18 2013 Optimize a model with 1080 rows, 2265 columns and 7525 nonzeros Presolve removed 5 rows and 5 columns Presolve time: 0.12s Presolved: 1075 rows, 2260 columns, 6520 nonzeros Variable types: 1260 continuous, 1000 integer (1000 binary) Root relaxation: objective 1.204447e+04, 53 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12044.4669 0 2 - 12044.4669 - - 0s 0 0 12051.9004 0 2 - 12051.9004 - - 0s 0 0 12054.6062 0 2 - 12054.6062 - - 0s 0 0 12055.9687 0 2 - 12055.9687 - - 0s 0 0 12056.4932 0 3 - 12056.4932 - - 0s 0 0 12056.5868 0 2 - 12056.5868 - - 0s 0 0 12057.7700 0 2 - 12057.7700 - - 0s 0 0 12058.0137 0 2 - 12058.0137 - - 0s 0 0 12058.1958 0 2 - 12058.1958 - - 0s 0 0 12058.5267 0 5 - 12058.5267 - - 0s 0 0 12059.2167 0 2 - 12059.2167 - - 0s 0 0 12059.5698 0 2 - 12059.5698 - - 0s 0 0 12060.7086 0 6 - 12060.7086 - - 0s 0 0 12060.7783 0 2 - 12060.7783 - - 0s 0 0 12060.9918 0 5 - 12060.9918 - - 0s 0 0 12061.8625 0 2 - 12061.8625 - - 0s 0 0 12061.8709 0 9 - 12061.8709 - - 0s 0 0 12062.4825 0 3 - 12062.4825 - - 0s 0 0 12062.8492 0 2 - 12062.8492 - - 0s 0 0 12062.8866 0 9 - 12062.8866 - - 0s 0 0 12063.6740 0 4 - 12063.6740 - - 0s 0 0 12063.7040 0 10 - 12063.7040 - - 0s 0 0 12063.7567 0 2 - 12063.7567 - - 0s 0 0 12063.8686 0 3 - 12063.8686 - - 0s 0 0 12063.9694 0 10 - 12063.9694 - - 0s 0 0 12063.9846 0 4 - 12063.9846 - - 0s 0 0 12064.0166 0 9 - 12064.0166 - - 0s 0 0 12064.0295 0 11 - 12064.0295 - - 0s 0 0 12064.0712 0 11 - 12064.0712 - - 0s 0 0 12064.0712 0 11 - 12064.0712 - - 0s 0 2 12064.0712 0 11 - 12064.0712 - - 0s * 12 4 7 12097.775593 12097.7756 0.0% 10.0 0s Cutting planes: Gomory: 1 Implied bound: 20 Flow cover: 6 Explored 13 nodes (428 simplex iterations) in 0.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.209777559273e+04, best bound 1.209777559273e+04, gap 0.0%