Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:57 2013 Optimize a model with 231 rows, 4431 columns and 8841 nonzeros Presolve time: 0.01s Presolved: 231 rows, 4431 columns, 8841 nonzeros Variable types: 4410 continuous, 21 integer (21 binary) Root relaxation: objective 2.165886e+04, 222 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21658.8552 0 3 - 21658.8552 - - 0s H 0 0 21747.000000 21658.8552 0.41% - 0s 0 0 cutoff 0 21747.0000 21747.0000 0.0% - 0s Cutting planes: Implied bound: 56 Flow cover: 3 Explored 0 nodes (229 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.174700000000e+04, best bound 2.174700000000e+04, gap 0.0%