Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:43:54 2013 Optimize a model with 7175 rows, 1225 columns and 22050 nonzeros Presolve removed 1497 rows and 646 columns Presolve time: 0.05s Presolved: 5678 rows, 579 columns, 17448 nonzeros Variable types: 13 continuous, 566 integer (566 binary) Found heuristic solution: objective 22992.000000 Root relaxation: objective 1.703475e+04, 1705 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17034.7500 0 11 22992.0000 17034.7500 25.9% - 0s H 0 0 17047.000000 17034.7500 0.07% - 0s 0 0 17037.2440 0 20 17047.0000 17037.2440 0.06% - 0s 0 0 17037.2440 0 7 17047.0000 17037.2440 0.06% - 0s 0 0 17039.1033 0 21 17047.0000 17039.1033 0.05% - 0s 0 2 17040.8847 0 21 17047.0000 17040.8847 0.04% - 0s H 1 2 17046.000000 17040.8847 0.03% 0.0 0s Cutting planes: Gomory: 16 Implied bound: 1 MIR: 12 Zero half: 3 Explored 21 nodes (2157 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.704600000000e+04, best bound 1.704500000000e+04, gap 0.0059%