Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:50 2013 Optimize a model with 140 rows, 1530 columns and 3540 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.00s Presolved: 130 rows, 1520 columns, 3030 nonzeros Variable types: 1520 continuous, 0 integer (0 binary) Root relaxation: objective 2.199252e+04, 82 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 0 2 21992.5209 0 2 - 21992.5209 - - 0s * 3 1 2 22791.927631 22057.2479 3.22% 8.7 0s * 14 6 7 22134.932338 22134.9323 0.0% 3.8 0s Explored 15 nodes (135 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.213493233821e+04, best bound 2.213493233821e+04, gap 0.0%