Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:58 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 2.819273e+04, 323 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28192.7310 0 2 - 28192.7310 - - 0s H 0 0 28266.000000 28192.7310 0.26% - 0s 0 0 cutoff 0 28266.0000 28266.0000 0.0% - 0s Cutting planes: Implied bound: 43 Flow cover: 9 Explored 0 nodes (342 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.826600000000e+04, best bound 2.826600000000e+04, gap 0.0%