Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:10:42 2013 Optimize a model with 550 rows, 25050 columns and 50050 nonzeros Presolve time: 0.03s Presolved: 550 rows, 25050 columns, 50050 nonzeros Variable types: 25000 continuous, 50 integer (50 binary) Root relaxation: objective 5.364974e+04, 995 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53649.7405 0 9 - 53649.7405 - - 0s H 0 0 56453.000000 53649.7405 4.97% - 0s 0 0 53974.2120 0 6 56453.0000 53974.2120 4.39% - 0s 0 0 54004.4952 0 5 56453.0000 54004.4952 4.34% - 0s H 0 0 55100.000000 54004.4952 1.99% - 0s 0 0 54017.0911 0 2 55100.0000 54017.0911 1.97% - 0s H 0 0 55080.687357 54017.0911 1.93% - 0s H 0 0 54751.000000 54017.0911 1.34% - 0s 0 0 54017.8597 0 2 54751.0000 54017.8597 1.34% - 0s 0 0 54018.0173 0 3 54751.0000 54018.0173 1.34% - 0s 0 0 54018.0873 0 3 54751.0000 54018.0873 1.34% - 0s H 0 0 54081.000000 54018.0873 0.12% - 0s 0 0 54018.0873 0 5 54081.0000 54018.0873 0.12% - 0s 0 0 54034.6182 0 2 54081.0000 54034.6182 0.09% - 0s 0 0 54051.3339 0 2 54081.0000 54051.3339 0.05% - 0s 0 0 54051.5745 0 2 54081.0000 54051.5745 0.05% - 0s 0 0 54052.8723 0 1 54081.0000 54052.8723 0.05% - 0s 0 0 54052.8723 0 1 54081.0000 54052.8723 0.05% - 0s 0 0 54052.8723 0 1 54081.0000 54052.8723 0.05% - 0s 0 0 54052.8723 0 1 54081.0000 54052.8723 0.05% - 0s 0 0 54052.8723 0 1 54081.0000 54052.8723 0.05% - 0s 0 0 54056.6344 0 1 54081.0000 54056.6344 0.05% - 0s 0 0 cutoff 0 54081.0000 54081.0000 0.0% - 0s Cutting planes: Implied bound: 26 Explored 0 nodes (2250 simplex iterations) in 0.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.408100000000e+04, best bound 5.408100000000e+04, gap 0.0%