Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:54:50 2013 Optimize a model with 11253 rows, 10923 columns and 43593 nonzeros Presolve removed 1270 rows and 0 columns Presolve time: 0.06s Presolved: 9983 rows, 10923 columns, 41053 nonzeros Variable types: 10890 continuous, 33 integer (33 binary) Root relaxation: objective 4.099221e+04, 1708 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40992.2105 0 2 - 40992.2105 - - 0s H 0 0 41171.000000 40992.2105 0.43% - 0s H 0 0 41004.000000 40992.2105 0.03% - 0s 0 0 cutoff 0 41004.0000 41004.0000 0.0% - 0s Cutting planes: Flow cover: 1 Explored 0 nodes (1745 simplex iterations) in 0.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.100400000000e+04, best bound 4.100400000000e+04, gap 0.0%