Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:47:48 2013 Optimize a model with 680 rows, 24260 columns and 248680 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.49s Presolved: 660 rows, 24240 columns, 228660 nonzeros Variable types: 24040 continuous, 200 integer (200 binary) Root relaxation: objective 3.709539e+04, 507 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37095.3933 0 12 - 37095.3933 - - 0s 0 0 37095.5953 0 12 - 37095.5953 - - 1s 0 0 37095.7098 0 15 - 37095.7098 - - 1s 0 0 37095.7632 0 15 - 37095.7632 - - 1s 0 0 37095.8290 0 15 - 37095.8290 - - 1s 0 0 37095.8834 0 15 - 37095.8834 - - 1s 0 0 37095.9129 0 15 - 37095.9129 - - 1s 0 0 37095.9433 0 15 - 37095.9433 - - 1s 0 0 37095.9649 0 15 - 37095.9649 - - 2s 0 0 37095.9649 0 15 - 37095.9649 - - 2s 0 0 37095.9649 0 15 - 37095.9649 - - 2s 0 0 37095.9649 0 15 - 37095.9649 - - 2s 0 2 37095.9760 0 15 - 37095.9760 - - 5s * 36 20 34 37260.156075 37101.9575 0.42% 7.0 6s H 37 17 37259.393454 37101.9575 0.42% 6.8 6s * 39 17 35 37259.138873 37101.9575 0.42% 6.7 6s * 60 28 22 37254.377061 37114.0113 0.38% 6.7 6s * 117 34 15 37253.975954 37243.0008 0.03% 6.5 6s Cutting planes: Flow cover: 22 Explored 144 nodes (1765 simplex iterations) in 7.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.725397595355e+04, best bound 3.725047322475e+04, gap 0.0094%