Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:59:42 2013 Optimize a model with 58596 rows, 57836 columns and 231116 nonzeros Presolve removed 1572 rows and 0 columns Presolve time: 0.37s Presolved: 57024 rows, 57836 columns, 227972 nonzeros Variable types: 57760 continuous, 76 integer (76 binary) Root relaxation: objective 9.482822e+04, 12571 iterations, 2.30 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 94828.2190 0 4 - 94828.2190 - - 2s H 0 0 97440.000000 94828.2190 2.68% - 3s H 0 0 94931.000000 94828.2190 0.11% - 3s 0 0 94830.4513 0 6 94931.0000 94830.4513 0.11% - 3s 0 0 94830.4513 0 4 94931.0000 94830.4513 0.11% - 5s 0 0 94834.2807 0 6 94931.0000 94834.2807 0.10% - 5s 0 0 94834.3223 0 6 94931.0000 94834.3223 0.10% - 5s 0 0 94834.3223 0 6 94931.0000 94834.3223 0.10% - 6s 0 0 94844.8833 0 4 94931.0000 94844.8833 0.09% - 6s 0 0 94851.3660 0 4 94931.0000 94851.3660 0.08% - 6s 0 2 94870.3447 0 4 94931.0000 94870.3447 0.06% - 7s Cutting planes: Gomory: 1 Flow cover: 1 Explored 3 nodes (17406 simplex iterations) in 7.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.493100000000e+04, best bound 9.493100000000e+04, gap 0.0%