Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:52:27 2013 Optimize a model with 11521 rows, 1681 columns and 35301 nonzeros Presolve removed 1555 rows and 860 columns Presolve time: 0.08s Presolved: 9966 rows, 821 columns, 30655 nonzeros Variable types: 20 continuous, 801 integer (801 binary) Found heuristic solution: objective 29382.000000 Root relaxation: objective 2.201675e+04, 3606 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 22016.7468 0 6 29382.0000 22016.7468 25.1% - 0s H 0 0 22029.000000 22016.7468 0.06% - 0s H 0 0 22022.000000 22016.7468 0.02% - 0s H 0 0 22021.000000 22016.7468 0.02% - 0s 0 0 22017.7319 0 16 22021.0000 22017.7319 0.01% - 0s 0 0 22017.7319 0 7 22021.0000 22017.7319 0.01% - 0s H 0 0 22020.000000 22017.7319 0.01% - 0s 0 0 22018.0350 0 21 22020.0000 22018.0350 0.01% - 0s Cutting planes: Gomory: 6 Cover: 2 Implied bound: 2 MIR: 6 Mod-K: 1 Explored 0 nodes (3841 simplex iterations) in 0.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.202000000000e+04, best bound 2.201900000000e+04, gap 0.0045%