Gurobi 5.0.1 (linux64) logging started Wed Apr 24 08:06:57 2013 Optimize a model with 93216 rows, 92256 columns and 368736 nonzeros Presolve removed 5423 rows and 0 columns Presolve time: 0.66s Presolved: 87793 rows, 92256 columns, 357890 nonzeros Variable types: 92160 continuous, 96 integer (96 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 17942 1.3081407e+05 4.268731e+03 0.000000e+00 5s 19202 1.3132590e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.313259e+05, 19202 iterations, 6.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 131325.898 0 5 - 131325.898 - - 7s H 0 0 137562.00000 131325.898 4.53% - 7s H 0 0 131683.00000 131325.898 0.27% - 8s 0 0 131328.096 0 7 131683.000 131328.096 0.27% - 9s 0 0 131328.096 0 5 131683.000 131328.096 0.27% - 15s 0 0 131328.412 0 6 131683.000 131328.412 0.27% - 16s 0 0 131328.412 0 6 131683.000 131328.412 0.27% - 16s 0 2 131329.508 0 6 131683.000 131329.508 0.27% - 20s * 33 9 8 131677.00000 131554.552 0.09% 84.5 23s Cutting planes: Gomory: 2 Flow cover: 5 Explored 50 nodes (31984 simplex iterations) in 23.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.316770000000e+05, best bound 1.316649438202e+05, gap 0.0092%