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 1842 rows and 872 columns Presolve time: 0.08s Presolved: 9679 rows, 809 columns, 29645 nonzeros Variable types: 16 continuous, 793 integer (793 binary) Found heuristic solution: objective 35371.000000 Root relaxation: objective 2.919058e+04, 3451 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 29190.5774 0 9 35371.0000 29190.5774 17.5% - 0s H 0 0 29217.000000 29190.5774 0.09% - 0s H 0 0 29215.000000 29190.5774 0.08% - 0s 0 0 29191.2381 0 8 29215.0000 29191.2381 0.08% - 0s 0 0 29191.2381 0 8 29215.0000 29191.2381 0.08% - 0s H 0 0 29200.000000 29191.2381 0.03% - 0s H 0 0 29199.000000 29191.2381 0.03% - 0s 0 0 29191.4311 0 14 29199.0000 29191.4311 0.03% - 0s H 0 0 29196.000000 29191.4311 0.02% - 0s 0 1 29191.5568 0 14 29196.0000 29191.5568 0.02% - 0s Cutting planes: Gomory: 5 Cover: 4 Clique: 1 MIR: 8 GUB cover: 1 Zero half: 4 Mod-K: 1 Explored 5 nodes (4653 simplex iterations) in 0.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.919600000000e+04, best bound 2.919400000000e+04, gap 0.0069%