Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:47:52 2013 Optimize a model with 66501 rows, 65691 columns and 262521 nonzeros Presolve removed 3280 rows and 0 columns Presolve time: 0.42s Presolved: 63221 rows, 65691 columns, 255961 nonzeros Variable types: 65610 continuous, 81 integer (81 binary) Root relaxation: objective 9.375094e+04, 11774 iterations, 2.45 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 93750.9398 0 3 - 93750.9398 - - 3s H 0 0 95551.000000 93750.9398 1.88% - 3s 0 0 93751.1873 0 4 95551.0000 93751.1873 1.88% - 3s 0 0 93751.1873 0 4 95551.0000 93751.1873 1.88% - 4s 0 0 93751.1873 0 4 95551.0000 93751.1873 1.88% - 5s H 0 0 94965.493333 93751.1873 1.28% - 6s H 0 0 94723.000000 93751.1873 1.03% - 6s 0 2 93757.4135 0 4 94723.0000 93757.4135 1.02% - 7s H 1 1 94329.809524 93757.4135 0.61% 0.0 7s * 9 4 8 93890.000000 93803.1933 0.09% 96.1 8s * 13 1 3 93853.000000 93853.0000 0.0% 75.9 8s Cutting planes: Gomory: 1 Flow cover: 1 Explored 14 nodes (12768 simplex iterations) in 8.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.385300000000e+04, best bound 9.385300000000e+04, gap 0.0%