Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:12:26 2013 Optimize a model with 5080 rows, 10265 columns and 35525 nonzeros Presolve removed 5 rows and 5 columns Presolve time: 0.14s Presolved: 5075 rows, 10260 columns, 30520 nonzeros Variable types: 5260 continuous, 5000 integer (5000 binary) Root relaxation: objective 9.876190e+03, 52 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9876.18952 0 2 - 9876.18952 - - 1s 0 0 9879.70002 0 4 - 9879.70002 - - 1s 0 0 9881.95341 0 4 - 9881.95341 - - 1s 0 0 9882.35183 0 4 - 9882.35183 - - 1s 0 0 9883.58390 0 2 - 9883.58390 - - 1s 0 0 9884.43979 0 4 - 9884.43979 - - 1s 0 0 9885.12857 0 7 - 9885.12857 - - 1s 0 0 9885.57814 0 2 - 9885.57814 - - 1s 0 0 9885.70073 0 8 - 9885.70073 - - 1s 0 0 9886.40480 0 2 - 9886.40480 - - 1s 0 0 9886.63582 0 10 - 9886.63582 - - 1s 0 0 9886.89577 0 8 - 9886.89577 - - 1s 0 0 9887.15590 0 2 - 9887.15590 - - 1s 0 0 9887.25185 0 4 - 9887.25185 - - 1s 0 0 9887.49510 0 5 - 9887.49510 - - 1s 0 0 9887.82419 0 9 - 9887.82419 - - 1s 0 0 9887.82665 0 9 - 9887.82665 - - 1s 0 0 9887.82665 0 9 - 9887.82665 - - 1s 0 2 9887.82665 0 9 - 9887.82665 - - 2s * 19 3 10 9942.9596239 9942.95765 0.00% 180 2s Cutting planes: Gomory: 2 Implied bound: 21 Flow cover: 6 Explored 20 nodes (3601 simplex iterations) in 2.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.942959623924e+03, best bound 9.942957647485e+03, gap 0.0000%