Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:48 2013 Optimize a model with 4220 rows, 4020 columns and 16020 nonzeros Presolve removed 414 rows and 0 columns Presolve time: 0.02s Presolved: 3806 rows, 4020 columns, 15192 nonzeros Variable types: 4000 continuous, 20 integer (20 binary) Root relaxation: objective 1.992771e+04, 374 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19927.7143 0 1 - 19927.7143 - - 0s H 0 0 19930.000000 19927.7143 0.01% - 0s Explored 0 nodes (374 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.993000000000e+04, best bound 1.993000000000e+04, gap 0.0%