Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:39:20 2013 Optimize a model with 73185 rows, 72335 columns and 289085 nonzeros Presolve removed 3786 rows and 0 columns Presolve time: 0.49s Presolved: 69399 rows, 72335 columns, 281513 nonzeros Variable types: 72250 continuous, 85 integer (85 binary) Root relaxation: objective 1.111386e+05, 16955 iterations, 4.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 111138.613 0 3 - 111138.613 - - 4s H 0 0 112292.00000 111138.613 1.03% - 5s H 0 0 111220.00000 111138.613 0.07% - 5s 0 0 111139.440 0 5 111220.000 111139.440 0.07% - 6s 0 0 111139.440 0 3 111220.000 111139.440 0.07% - 8s 0 0 111140.272 0 5 111220.000 111140.272 0.07% - 9s 0 0 111140.285 0 3 111220.000 111140.285 0.07% - 9s 0 0 111140.285 0 3 111220.000 111140.285 0.07% - 9s 0 0 111144.875 0 2 111220.000 111144.875 0.07% - 10s 0 2 111150.688 0 2 111220.000 111150.688 0.06% - 11s H 2 1 111216.00000 111156.818 0.05% 68.0 11s * 3 2 3 111172.00000 111172.000 0.0% 65.3 11s Cutting planes: Gomory: 3 Flow cover: 6 Explored 4 nodes (22866 simplex iterations) in 11.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.111720000000e+05, best bound 1.111720000000e+05, gap 0.0%