Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:54:44 2013 Optimize a model with 11253 rows, 10923 columns and 43593 nonzeros Presolve removed 1038 rows and 0 columns Presolve time: 0.06s Presolved: 10215 rows, 10923 columns, 41517 nonzeros Variable types: 10890 continuous, 33 integer (33 binary) Root relaxation: objective 3.527987e+04, 1627 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35279.8653 0 4 - 35279.8653 - - 0s H 0 0 35890.000000 35279.8653 1.70% - 0s 0 0 35280.0878 0 5 35890.0000 35280.0878 1.70% - 0s 0 0 35280.8511 0 5 35890.0000 35280.8511 1.70% - 0s 0 0 35280.8613 0 5 35890.0000 35280.8613 1.70% - 0s 0 2 35285.8089 0 5 35890.0000 35285.8089 1.68% - 0s * 10 6 8 35871.000000 35410.2713 1.28% 37.4 0s * 16 6 5 35477.000000 35433.7686 0.12% 36.4 0s Cutting planes: Gomory: 3 Flow cover: 8 Explored 21 nodes (2280 simplex iterations) in 0.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.547700000000e+04, best bound 3.547662872024e+04, gap 0.0010%