Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:59:34 2013 Optimize a model with 17261 rows, 16851 columns and 67281 nonzeros Presolve removed 1340 rows and 0 columns Presolve time: 0.09s Presolved: 15921 rows, 16851 columns, 64601 nonzeros Variable types: 16810 continuous, 41 integer (41 binary) Root relaxation: objective 4.008085e+04, 2513 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40080.8500 0 3 - 40080.8500 - - 0s H 0 0 40202.000000 40080.8500 0.30% - 0s H 0 0 40167.000000 40080.8500 0.21% - 0s H 0 0 40161.000000 40080.8500 0.20% - 0s 0 0 40081.9757 0 4 40161.0000 40081.9757 0.20% - 0s 0 0 40082.1401 0 4 40161.0000 40082.1401 0.20% - 0s 0 0 40082.1401 0 4 40161.0000 40082.1401 0.20% - 0s 0 0 40082.1450 0 4 40161.0000 40082.1450 0.20% - 0s 0 0 40082.1711 0 4 40161.0000 40082.1711 0.20% - 0s 0 0 40082.2530 0 4 40161.0000 40082.2530 0.20% - 0s H 0 0 40139.000000 40082.2530 0.14% - 0s 0 0 40106.2818 0 2 40139.0000 40106.2818 0.08% - 1s H 0 0 40120.000000 40106.2818 0.03% - 1s 0 0 40109.2428 0 2 40120.0000 40109.2428 0.03% - 1s 0 0 cutoff 0 40120.0000 40120.0000 0.0% - 1s Cutting planes: Gomory: 1 Flow cover: 2 Explored 0 nodes (3227 simplex iterations) in 1.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.012000000000e+04, best bound 4.012000000000e+04, gap 0.0%