Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:08:41 2013 Optimize a model with 24549 rows, 24059 columns and 96089 nonzeros Presolve removed 1469 rows and 0 columns Presolve time: 0.14s Presolved: 23080 rows, 24059 columns, 93151 nonzeros Variable types: 24010 continuous, 49 integer (49 binary) Root relaxation: objective 4.691786e+04, 3485 iterations, 0.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46917.8590 0 5 - 46917.8590 - - 0s H 0 0 47540.000000 46917.8590 1.31% - 0s H 0 0 47180.000000 46917.8590 0.56% - 0s 0 0 46918.5246 0 8 47180.0000 46918.5246 0.55% - 0s 0 0 46918.5246 0 8 47180.0000 46918.5246 0.55% - 0s 0 0 46921.3674 0 6 47180.0000 46921.3674 0.55% - 1s 0 2 46929.1159 0 6 47180.0000 46929.1159 0.53% - 1s H 27 8 47110.000000 46972.0334 0.29% 56.1 2s * 45 13 6 47094.000000 46992.5000 0.22% 58.9 2s Cutting planes: Gomory: 1 Flow cover: 4 Explored 59 nodes (6698 simplex iterations) in 2.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.709400000000e+04, best bound 4.709400000000e+04, gap 0.0%