Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:40:52 2013 Optimize a model with 80189 rows, 79299 columns and 316929 nonzeros Presolve removed 5698 rows and 0 columns Presolve time: 0.54s Presolved: 74491 rows, 79299 columns, 305533 nonzeros Variable types: 79210 continuous, 89 integer (89 binary) Root relaxation: objective 1.010817e+05, 16090 iterations, 4.45 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 101081.736 0 4 - 101081.736 - - 5s H 0 0 106832.00000 101081.736 5.38% - 5s 0 0 101088.300 0 6 106832.000 101088.300 5.38% - 6s 0 0 101088.300 0 6 106832.000 101088.300 5.38% - 6s 0 0 101088.327 0 6 106832.000 101088.327 5.38% - 7s H 0 0 105668.57987 101088.327 4.33% - 10s H 0 0 102649.43293 101088.327 1.52% - 10s H 0 0 102498.00000 101088.327 1.38% - 10s 0 0 101088.327 0 4 102498.000 101088.327 1.38% - 16s 0 0 101088.327 0 6 102498.000 101088.327 1.38% - 17s 0 0 101088.327 0 6 102498.000 101088.327 1.38% - 17s 0 2 101098.724 0 6 102498.000 101098.724 1.37% - 20s H 5 5 102041.00000 101273.202 0.75% 276 21s H 19 12 101785.00000 101273.202 0.50% 159 23s * 22 12 21 101763.00000 101273.202 0.48% 142 23s * 33 18 12 101759.00000 101284.547 0.47% 140 24s 36 16 cutoff 12 101759.000 101284.547 0.47% 132 25s * 43 11 6 101588.00000 101326.074 0.26% 140 25s H 62 2 101575.00000 101508.250 0.07% 135 27s * 63 3 8 101543.00000 101508.513 0.03% 135 27s Cutting planes: Gomory: 3 Flow cover: 7 Explored 67 nodes (34313 simplex iterations) in 27.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.015430000000e+05, best bound 1.015430000000e+05, gap 0.0%