Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:08:08 2013 Optimize a model with 76647 rows, 75777 columns and 302847 nonzeros Presolve removed 2742 rows and 0 columns Presolve time: 0.52s Presolved: 73905 rows, 75777 columns, 297363 nonzeros Variable types: 75690 continuous, 87 integer (87 binary) Root relaxation: objective 1.094295e+05, 17430 iterations, 3.96 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 109429.500 0 1 - 109429.500 - - 4s H 0 0 109663.00000 109429.500 0.21% - 4s 0 0 109431.217 0 2 109663.000 109431.217 0.21% - 5s 0 0 109431.217 0 1 109663.000 109431.217 0.21% - 7s 0 0 109431.217 0 2 109663.000 109431.217 0.21% - 8s 0 0 109477.026 0 4 109663.000 109477.026 0.17% - 8s 0 0 109496.578 0 3 109663.000 109496.578 0.15% - 9s H 0 0 109551.00000 109496.578 0.05% - 9s 0 1 109497.821 0 3 109551.000 109497.821 0.05% - 10s Cutting planes: Gomory: 1 Flow cover: 1 Explored 4 nodes (23827 simplex iterations) in 10.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.095510000000e+05, best bound 1.095510000000e+05, gap 0.0%