Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:41 2013 Optimize a model with 3456 rows, 3276 columns and 12996 nonzeros Presolve removed 18 rows and 0 columns Presolve time: 0.01s Presolved: 3438 rows, 3276 columns, 12978 nonzeros Variable types: 3258 continuous, 18 integer (18 binary) Root relaxation: objective 1.798053e+04, 452 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17980.5269 0 11 - 17980.5269 - - 0s H 0 0 18426.000000 17980.5269 2.42% - 0s * 0 0 0 18353.000000 18353.0000 0.0% - 0s Cutting planes: Gomory: 9 Implied bound: 11 Explored 0 nodes (548 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.835300000000e+04, best bound 1.835300000000e+04, gap 0.0%