Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:31 2013 Optimize a model with 64 rows, 2110 columns and 24118 nonzeros Presolve removed 22 rows and 72 columns Presolve time: 0.11s Presolved: 42 rows, 2038 columns, 22074 nonzeros Variable types: 2020 continuous, 18 integer (18 binary) Root relaxation: objective 4.810927e+03, 22 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4810.92679 0 14 - 4810.92679 - - 0s 0 0 4812.27198 0 14 - 4812.27198 - - 0s 0 0 4812.60059 0 14 - 4812.60059 - - 0s 0 0 4812.60857 0 14 - 4812.60857 - - 0s 0 0 4824.87610 0 11 - 4824.87610 - - 0s 0 0 4824.87610 0 11 - 4824.87610 - - 0s H 0 0 4832.5416044 4824.87610 0.16% - 0s H 0 0 4831.2165361 4824.87610 0.13% - 0s 0 0 4830.83863 0 7 4831.21654 4830.83863 0.01% - 0s Explored 0 nodes (179 simplex iterations) in 0.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.831216536100e+03, best bound 4.830838630110e+03, gap 0.0078%