Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:04:44 2013 Optimize a model with 2160 rows, 5030 columns and 16050 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.26s Presolved: 2150 rows, 5020 columns, 14040 nonzeros Variable types: 3020 continuous, 2000 integer (2000 binary) Root relaxation: objective 2.337984e+04, 151 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23379.8401 0 2 - 23379.8401 - - 0s 0 0 23401.2586 0 2 - 23401.2586 - - 0s 0 0 23408.1573 0 3 - 23408.1573 - - 0s 0 0 23414.8333 0 2 - 23414.8333 - - 0s 0 0 23415.0683 0 3 - 23415.0683 - - 0s 0 0 23418.9480 0 4 - 23418.9480 - - 0s 0 0 23423.2342 0 5 - 23423.2342 - - 0s 0 0 23424.8147 0 7 - 23424.8147 - - 0s 0 0 23424.8816 0 7 - 23424.8816 - - 0s 0 0 23425.1186 0 8 - 23425.1186 - - 0s 0 0 23425.1510 0 8 - 23425.1510 - - 0s 0 0 23425.1656 0 8 - 23425.1656 - - 0s 0 0 23425.1658 0 8 - 23425.1658 - - 0s 0 0 23425.1658 0 8 - 23425.1658 - - 0s H 0 0 23620.127542 23425.1658 0.83% - 0s 0 2 23426.5398 0 5 23620.1275 23426.5398 0.82% - 0s * 22 6 12 23527.307569 23527.3076 0.0% 10.2 0s Cutting planes: Gomory: 2 Implied bound: 16 Flow cover: 5 Explored 23 nodes (706 simplex iterations) in 0.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.352730756914e+04, best bound 2.352730756914e+04, gap 0.0%