Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:53:26 2013 Optimize a model with 14234 rows, 1936 columns and 43560 nonzeros Presolve removed 1462 rows and 980 columns Presolve time: 0.09s Presolved: 12772 rows, 956 columns, 39217 nonzeros Variable types: 22 continuous, 934 integer (934 binary) Found heuristic solution: objective 48214.000000 Root relaxation: objective 3.387006e+04, 6788 iterations, 0.28 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 33870.0595 0 5 48214.0000 33870.0595 29.8% - 0s H 0 0 33874.000000 33870.0595 0.01% - 0s H 0 0 33872.000000 33870.0595 0.01% - 0s Explored 0 nodes (6793 simplex iterations) in 0.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.387200000000e+04, best bound 3.387100000000e+04, gap 0.0030%