Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:47:03 2013 Optimize a model with 1160 rows, 3030 columns and 9050 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.11s Presolved: 1150 rows, 3020 columns, 8040 nonzeros Variable types: 2020 continuous, 1000 integer (1000 binary) Root relaxation: objective 1.791602e+04, 153 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17916.0191 0 6 - 17916.0191 - - 0s 0 0 17930.9169 0 4 - 17930.9169 - - 0s 0 0 17935.2266 0 4 - 17935.2266 - - 0s 0 0 17938.2632 0 4 - 17938.2632 - - 0s 0 0 17941.1992 0 4 - 17941.1992 - - 0s 0 0 17942.4753 0 7 - 17942.4753 - - 0s 0 0 17943.7292 0 4 - 17943.7292 - - 0s 0 0 17944.4634 0 4 - 17944.4634 - - 0s 0 0 17945.3395 0 4 - 17945.3395 - - 0s 0 0 17946.0445 0 10 - 17946.0445 - - 0s 0 0 17946.7724 0 4 - 17946.7724 - - 0s 0 0 17946.8879 0 11 - 17946.8879 - - 0s 0 0 17947.8402 0 4 - 17947.8402 - - 0s 0 0 17947.9513 0 12 - 17947.9513 - - 0s 0 0 17948.4048 0 12 - 17948.4048 - - 0s 0 0 17948.4760 0 12 - 17948.4760 - - 0s 0 0 17948.4760 0 12 - 17948.4760 - - 0s 0 2 17948.4760 0 12 - 17948.4760 - - 0s * 25 7 13 17984.549243 17983.8369 0.00% 13.4 0s Cutting planes: Gomory: 1 Implied bound: 19 Flow cover: 5 Explored 26 nodes (638 simplex iterations) in 0.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.798454924300e+04, best bound 1.798383691546e+04, gap 0.0040%