Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:23:04 2013 Optimize a model with 78408 rows, 77528 columns and 309848 nonzeros Presolve removed 3181 rows and 0 columns Presolve time: 0.52s Presolved: 75227 rows, 77528 columns, 303486 nonzeros Variable types: 77440 continuous, 88 integer (88 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 19146 1.1803986e+05 1.977342e+03 0.000000e+00 5s 21436 1.1923950e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.192395e+05, 21436 iterations, 6.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 119239.504 0 5 - 119239.504 - - 6s H 0 0 122210.00000 119239.504 2.43% - 7s 0 0 119241.114 0 6 122210.000 119241.114 2.43% - 7s 0 0 119241.114 0 6 122210.000 119241.114 2.43% - 8s 0 0 119241.139 0 6 122210.000 119241.139 2.43% - 9s H 0 0 120230.00000 119241.139 0.82% - 11s 0 2 119246.336 0 6 120230.000 119246.336 0.82% - 14s 3 5 119367.593 2 4 120230.000 119316.820 0.76% 248 15s H 6 6 120053.37778 119316.820 0.61% 227 15s H 9 9 119873.46824 119316.820 0.46% 219 16s H 15 11 119473.24615 119316.820 0.13% 162 16s H 16 10 119465.58065 119316.820 0.12% 154 16s * 18 8 15 119446.00000 119316.820 0.11% 137 16s Cutting planes: Gomory: 2 Flow cover: 6 Explored 48 nodes (25876 simplex iterations) in 18.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.194460000000e+05, best bound 1.194448333333e+05, gap 0.0010%