Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:47 2013 Optimize a model with 2028 rows, 6044 columns and 16082 nonzeros Presolve removed 815 rows and 2410 columns Presolve time: 0.19s Presolved: 1213 rows, 3634 columns, 7268 nonzeros Variable types: 2427 continuous, 1207 integer (1207 binary) Root relaxation: objective 5.420106e+03, 5 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5420.10604 0 1 - 5420.10604 - - 0s H 0 0 5483.1424053 5420.10604 1.15% - 0s 0 0 5440.69128 0 2 5483.14241 5440.69128 0.77% - 0s 0 0 5440.69814 0 2 5483.14241 5440.69814 0.77% - 0s H 0 0 5441.6179642 5440.69814 0.02% - 0s 0 0 5440.70500 0 2 5441.61796 5440.70500 0.02% - 0s 0 0 5440.71185 0 2 5441.61796 5440.71185 0.02% - 0s 0 0 5440.71869 0 2 5441.61796 5440.71869 0.02% - 0s 0 0 5440.73879 0 2 5441.61796 5440.73879 0.02% - 0s 0 0 5440.75956 0 2 5441.61796 5440.75956 0.02% - 0s 0 0 5440.78011 0 2 5441.61796 5440.78011 0.02% - 0s 0 0 5440.80046 0 2 5441.61796 5440.80046 0.02% - 0s 0 0 5440.82059 0 2 5441.61796 5440.82059 0.01% - 0s 0 0 5440.84052 0 2 5441.61796 5440.84052 0.01% - 0s 0 0 5440.86023 0 2 5441.61796 5440.86023 0.01% - 0s 0 0 5440.87974 0 2 5441.61796 5440.87974 0.01% - 0s 0 0 5440.89903 0 2 5441.61796 5440.89903 0.01% - 0s 0 0 5440.91812 0 2 5441.61796 5440.91812 0.01% - 0s 0 0 5440.93700 0 2 5441.61796 5440.93700 0.01% - 0s 0 0 5440.95567 0 2 5441.61796 5440.95567 0.01% - 0s 0 0 5440.97413 0 2 5441.61796 5440.97413 0.01% - 0s 0 0 5440.99238 0 2 5441.61796 5440.99238 0.01% - 0s 0 0 5441.01043 0 2 5441.61796 5441.01043 0.01% - 0s 0 0 5441.02826 0 2 5441.61796 5441.02826 0.01% - 0s 0 0 5441.04589 0 2 5441.61796 5441.04589 0.01% - 0s 0 0 5441.06331 0 2 5441.61796 5441.06331 0.01% - 0s 0 0 5441.08052 0 2 5441.61796 5441.08052 0.01% - 0s Cutting planes: Cover: 1 Flow cover: 1 Explored 0 nodes (257 simplex iterations) in 0.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.441617964221e+03, best bound 5.441080517284e+03, gap 0.0099%