Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:05:37 2013 Optimize a model with 22607 rows, 22137 columns and 88407 nonzeros Presolve removed 2588 rows and 0 columns Presolve time: 0.13s Presolved: 20019 rows, 22137 columns, 83231 nonzeros Variable types: 22090 continuous, 47 integer (47 binary) Root relaxation: objective 4.604710e+04, 2852 iterations, 0.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46047.1013 0 6 - 46047.1013 - - 0s H 0 0 46475.000000 46047.1013 0.92% - 0s H 0 0 46252.000000 46047.1013 0.44% - 0s 0 0 46053.8923 0 7 46252.0000 46053.8923 0.43% - 0s 0 0 46054.3851 0 6 46252.0000 46054.3851 0.43% - 0s 0 0 46065.0323 0 5 46252.0000 46065.0323 0.40% - 0s 0 0 46065.0323 0 4 46252.0000 46065.0323 0.40% - 1s 0 0 46065.0323 0 6 46252.0000 46065.0323 0.40% - 1s 0 0 46065.1984 0 6 46252.0000 46065.1984 0.40% - 1s 0 0 46065.1984 0 6 46252.0000 46065.1984 0.40% - 1s 0 2 46071.8415 0 6 46252.0000 46071.8415 0.39% - 1s H 4 4 46247.563636 46149.5300 0.21% 46.8 2s H 5 5 46190.563636 46149.5300 0.09% 39.6 2s * 6 5 6 46178.000000 46149.5300 0.06% 34.8 2s Cutting planes: Gomory: 2 Flow cover: 6 Explored 13 nodes (4888 simplex iterations) in 2.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.617800000000e+04, best bound 4.617800000000e+04, gap 0.0%