Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:10 2013 Optimize a model with 11934 rows, 11594 columns and 46274 nonzeros Presolve removed 716 rows and 0 columns Presolve time: 0.06s Presolved: 11218 rows, 11594 columns, 44842 nonzeros Variable types: 11560 continuous, 34 integer (34 binary) Root relaxation: objective 3.210422e+04, 1388 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 32104.2247 0 1 - 32104.2247 - - 0s H 0 0 32213.000000 32104.2247 0.34% - 0s 0 0 32121.7612 0 2 32213.0000 32121.7612 0.28% - 0s 0 0 32121.7612 0 2 32213.0000 32121.7612 0.28% - 0s 0 0 32121.7612 0 2 32213.0000 32121.7612 0.28% - 0s 0 2 32134.3146 0 2 32213.0000 32134.3146 0.24% - 0s Cutting planes: Gomory: 1 Flow cover: 1 Explored 4 nodes (1547 simplex iterations) in 0.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.221300000000e+04, best bound 3.221300000000e+04, gap 0.0%