Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:09 2013 Optimize a model with 11934 rows, 11594 columns and 46274 nonzeros Presolve removed 1106 rows and 0 columns Presolve time: 0.06s Presolved: 10828 rows, 11594 columns, 44062 nonzeros Variable types: 11560 continuous, 34 integer (34 binary) Root relaxation: objective 3.850330e+04, 1829 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38503.2952 0 2 - 38503.2952 - - 0s H 0 0 38533.000000 38503.2952 0.08% - 0s 0 0 38505.7675 0 3 38533.0000 38505.7675 0.07% - 0s 0 0 38505.7675 0 2 38533.0000 38505.7675 0.07% - 0s 0 0 38505.7675 0 3 38533.0000 38505.7675 0.07% - 0s 0 0 cutoff 0 38533.0000 38533.0000 0.0% - 0s Cutting planes: Gomory: 1 Flow cover: 4 Explored 0 nodes (2686 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.853300000000e+04, best bound 3.853300000000e+04, gap 0.0%