Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:40:43 2013 Optimize a model with 140 rows, 6030 columns and 17040 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.01s Presolved: 130 rows, 6020 columns, 12030 nonzeros Variable types: 6020 continuous, 0 integer (0 binary) Root relaxation: objective 2.199252e+04, 113 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21992.5209 0 2 - 21992.5209 - - 0s H 0 0 22664.392376 21992.5209 2.96% - 0s 0 2 21992.5209 0 2 22664.3924 21992.5209 2.96% - 0s * 20 6 10 22134.958679 22134.9587 0.0% 2.3 0s Explored 21 nodes (159 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.213495867877e+04, best bound 2.213495867877e+04, gap 0.0%