Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:53:33 2013 Optimize a model with 14234 rows, 1936 columns and 43560 nonzeros Presolve removed 1455 rows and 978 columns Presolve time: 0.09s Presolved: 12779 rows, 958 columns, 39320 nonzeros Variable types: 24 continuous, 934 integer (934 binary) Found heuristic solution: objective 36756.000000 Root relaxation: objective 2.595668e+04, 6253 iterations, 0.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 25956.6825 0 8 36756.0000 25956.6825 29.4% - 0s H 0 0 25962.000000 25956.6825 0.02% - 0s H 0 0 25961.000000 25956.6825 0.02% - 0s 0 0 25958.8525 0 19 25961.0000 25958.8525 0.01% - 0s Cutting planes: Gomory: 5 Implied bound: 2 MIR: 5 Zero half: 1 Explored 0 nodes (6297 simplex iterations) in 0.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.596100000000e+04, best bound 2.595900000000e+04, gap 0.0077%