Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:13:52 2013 Optimize a model with 1400 rows, 30500 columns and 96250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.13s Presolved: 1350 rows, 30450 columns, 91200 nonzeros Variable types: 30100 continuous, 350 integer (350 binary) Root relaxation: objective 1.650739e+05, 2743 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 165073.856 0 6 - 165073.856 - - 0s 0 0 165087.513 0 6 - 165087.513 - - 0s 0 0 165094.547 0 8 - 165094.547 - - 0s 0 0 165095.761 0 11 - 165095.761 - - 0s 0 0 165097.959 0 11 - 165097.959 - - 0s 0 0 165099.006 0 8 - 165099.006 - - 0s 0 0 165099.060 0 11 - 165099.060 - - 0s 0 0 165099.110 0 11 - 165099.110 - - 0s 0 0 165099.261 0 11 - 165099.261 - - 0s 0 0 165099.884 0 11 - 165099.884 - - 1s 0 0 165099.884 0 11 - 165099.884 - - 1s 0 0 165099.884 0 11 - 165099.884 - - 1s 0 0 165099.884 0 11 - 165099.884 - - 1s 0 0 165099.884 0 11 - 165099.884 - - 1s 0 0 165099.884 0 11 - 165099.884 - - 1s 0 2 165106.691 0 11 - 165106.691 - - 2s * 20 9 20 165702.74306 165189.399 0.31% 24.2 3s H 27 6 165669.28569 165442.506 0.14% 24.6 3s * 33 9 12 165653.33474 165442.506 0.13% 21.8 3s * 53 10 20 165630.32597 165555.872 0.04% 17.0 3s Cutting planes: Flow cover: 10 Explored 61 nodes (4795 simplex iterations) in 3.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.656303259742e+05, best bound 1.656155793615e+05, gap 0.0089%