Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:45:56 2013 Optimize a model with 20320 rows, 44060 columns and 148100 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.40s Presolved: 20300 rows, 44040 columns, 128080 nonzeros Variable types: 24040 continuous, 20000 integer (20000 binary) Root relaxation: objective 3.600389e+04, 429 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36003.8892 0 4 - 36003.8892 - - 1s 0 0 36065.2650 0 5 - 36065.2650 - - 1s 0 0 36068.7775 0 5 - 36068.7775 - - 1s 0 0 36070.1559 0 5 - 36070.1559 - - 2s 0 0 36070.1607 0 5 - 36070.1607 - - 2s 0 0 36071.2337 0 6 - 36071.2337 - - 2s 0 0 36073.7673 0 6 - 36073.7673 - - 2s 0 0 36073.8264 0 5 - 36073.8264 - - 2s 0 0 36074.0379 0 7 - 36074.0379 - - 2s 0 0 36076.8669 0 5 - 36076.8669 - - 3s 0 0 36076.9037 0 6 - 36076.9037 - - 3s 0 0 36078.8935 0 7 - 36078.8935 - - 3s 0 0 36079.5057 0 5 - 36079.5057 - - 3s 0 0 36080.0041 0 10 - 36080.0041 - - 3s 0 0 36080.3411 0 6 - 36080.3411 - - 4s 0 0 36080.5778 0 10 - 36080.5778 - - 4s 0 0 36080.7212 0 10 - 36080.7212 - - 4s 0 0 36080.7212 0 10 - 36080.7212 - - 4s 0 2 36080.7212 0 10 - 36080.7212 - - 7s * 24 6 12 36202.402686 36202.4027 0.0% 36.5 8s Cutting planes: Gomory: 4 Implied bound: 27 Flow cover: 3 Explored 25 nodes (1862 simplex iterations) in 8.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.620240268604e+04, best bound 3.620240268604e+04, gap 0.0%