Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:54:55 2013 Optimize a model with 363 rows, 10923 columns and 21813 nonzeros Presolve time: 0.02s Presolved: 363 rows, 10923 columns, 21813 nonzeros Variable types: 10890 continuous, 33 integer (33 binary) Root relaxation: objective 4.071879e+04, 588 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40718.7893 0 6 - 40718.7893 - - 0s H 0 0 41171.000000 40718.7893 1.10% - 0s H 0 0 41004.000000 40718.7893 0.70% - 0s 0 0 40943.1689 0 3 41004.0000 40943.1689 0.15% - 0s 0 0 40979.1615 0 4 41004.0000 40979.1615 0.06% - 0s 0 0 40992.1557 0 3 41004.0000 40992.1557 0.03% - 0s 0 0 40993.2075 0 2 41004.0000 40993.2075 0.03% - 0s 0 0 cutoff 0 41004.0000 41004.0000 0.0% - 0s Cutting planes: Implied bound: 31 Flow cover: 6 Explored 0 nodes (746 simplex iterations) in 0.13 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%