Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:52:17 2013 Optimize a model with 57075 rows, 56325 columns and 225075 nonzeros Presolve removed 4064 rows and 0 columns Presolve time: 0.35s Presolved: 53011 rows, 56325 columns, 216947 nonzeros Variable types: 56250 continuous, 75 integer (75 binary) Root relaxation: objective 1.026058e+05, 15147 iterations, 2.82 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 102605.817 0 3 - 102605.817 - - 3s H 0 0 104060.00000 102605.817 1.40% - 3s H 0 0 102716.00000 102605.817 0.11% - 3s 0 0 102606.573 0 5 102716.000 102606.573 0.11% - 3s 0 0 102606.573 0 3 102716.000 102606.573 0.11% - 5s 0 0 102606.671 0 5 102716.000 102606.671 0.11% - 5s 0 0 102606.845 0 5 102716.000 102606.845 0.11% - 6s 0 0 102606.868 0 6 102716.000 102606.868 0.11% - 6s 0 0 102606.918 0 4 102716.000 102606.918 0.11% - 6s 0 2 102621.977 0 4 102716.000 102621.977 0.09% - 7s * 5 2 4 102680.00000 102660.183 0.02% 82.4 7s Cutting planes: Gomory: 1 Flow cover: 6 Explored 7 nodes (20953 simplex iterations) in 7.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.026800000000e+05, best bound 1.026719735596e+05, gap 0.0078%