Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:40:16 2013 Optimize a model with 73185 rows, 72335 columns and 289085 nonzeros Presolve removed 4772 rows and 0 columns Presolve time: 0.49s Presolved: 68413 rows, 72335 columns, 279541 nonzeros Variable types: 72250 continuous, 85 integer (85 binary) Root relaxation: objective 9.946487e+04, 17102 iterations, 4.47 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 99464.8732 0 1 - 99464.8732 - - 5s H 0 0 99800.000000 99464.8732 0.34% - 5s 0 0 99467.2303 0 3 99800.0000 99467.2303 0.33% - 5s 0 0 99467.2303 0 3 99800.0000 99467.2303 0.33% - 6s 0 0 99467.2303 0 1 99800.0000 99467.2303 0.33% - 11s 0 0 99471.6476 0 3 99800.0000 99471.6476 0.33% - 12s 0 0 99471.6476 0 3 99800.0000 99471.6476 0.33% - 12s 0 2 99472.5739 0 3 99800.0000 99472.5739 0.33% - 13s H 2 2 99687.905660 99570.7547 0.12% 116 13s * 5 4 5 99624.000000 99587.2101 0.04% 91.2 13s Cutting planes: Gomory: 1 Flow cover: 6 Explored 10 nodes (23860 simplex iterations) in 14.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.962400000000e+04, best bound 9.962400000000e+04, gap 0.0%