Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:23:26 2013 Optimize a model with 78408 rows, 77528 columns and 309848 nonzeros Presolve removed 3092 rows and 0 columns Presolve time: 0.52s Presolved: 75316 rows, 77528 columns, 303664 nonzeros Variable types: 77440 continuous, 88 integer (88 binary) Root relaxation: objective 1.054989e+05, 15192 iterations, 3.64 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 105498.895 0 5 - 105498.895 - - 4s H 0 0 109597.00000 105498.895 3.74% - 4s H 0 0 106646.00000 105498.895 1.08% - 5s 0 0 105503.948 0 7 106646.000 105503.948 1.07% - 5s 0 0 105504.146 0 7 106646.000 105504.146 1.07% - 6s 0 0 105504.146 0 5 106646.000 105504.146 1.07% - 13s 0 0 105505.602 0 6 106646.000 105505.602 1.07% - 14s 0 0 105505.701 0 6 106646.000 105505.701 1.07% - 14s 0 2 105511.111 0 6 106646.000 105511.111 1.06% - 17s H 2 2 106222.62295 105538.292 0.64% 130 17s H 4 4 106017.49326 105581.742 0.41% 150 17s * 6 4 6 105717.00000 105581.742 0.13% 123 18s Cutting planes: Gomory: 2 Flow cover: 11 Explored 10 nodes (25969 simplex iterations) in 18.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.057170000000e+05, best bound 1.057170000000e+05, gap 0.0%