Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:52:58 2013 Optimize a model with 10320 rows, 24060 columns and 78100 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.36s Presolved: 10300 rows, 24040 columns, 68080 nonzeros Variable types: 14040 continuous, 10000 integer (10000 binary) Root relaxation: objective 3.709539e+04, 422 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37095.3933 0 8 - 37095.3933 - - 0s 0 0 37114.7413 0 6 - 37114.7413 - - 1s 0 0 37119.8428 0 6 - 37119.8428 - - 1s 0 0 37122.6823 0 8 - 37122.6823 - - 1s 0 0 37123.7059 0 7 - 37123.7059 - - 1s 0 0 37126.8160 0 7 - 37126.8160 - - 1s 0 0 37126.8356 0 8 - 37126.8356 - - 1s 0 0 37128.1669 0 9 - 37128.1669 - - 1s 0 0 37128.8720 0 4 - 37128.8720 - - 1s 0 0 37129.4876 0 7 - 37129.4876 - - 1s 0 0 37130.1720 0 11 - 37130.1720 - - 2s 0 0 37131.8824 0 7 - 37131.8824 - - 2s 0 0 37132.8622 0 12 - 37132.8622 - - 2s 0 0 37134.0339 0 7 - 37134.0339 - - 2s 0 0 37134.8015 0 14 - 37134.8015 - - 2s 0 0 37134.9911 0 7 - 37134.9911 - - 2s 0 0 37135.0228 0 7 - 37135.0228 - - 2s 0 0 37135.1564 0 14 - 37135.1564 - - 2s 0 0 37135.2488 0 15 - 37135.2488 - - 2s 0 0 37135.4778 0 15 - 37135.4778 - - 2s 0 0 37135.4997 0 15 - 37135.4997 - - 2s 0 0 37135.5502 0 15 - 37135.5502 - - 3s 0 0 37135.5670 0 15 - 37135.5670 - - 3s 0 0 37135.5859 0 15 - 37135.5859 - - 3s 0 0 37135.5859 0 15 - 37135.5859 - - 3s H 0 0 38183.385751 37135.5859 2.74% - 4s 0 2 37135.5859 0 15 38183.3858 37135.5859 2.74% - 5s * 25 7 13 37253.495142 37252.7045 0.00% 21.0 5s Cutting planes: Gomory: 1 Implied bound: 32 Flow cover: 7 Explored 26 nodes (1640 simplex iterations) in 5.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.725349514248e+04, best bound 3.725270454517e+04, gap 0.0021%