Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:55 2013 Optimize a model with 680 rows, 4440 columns and 9620 nonzeros Presolve removed 80 rows and 60 columns Presolve time: 0.03s Presolved: 600 rows, 4380 columns, 9300 nonzeros Variable types: 4200 continuous, 180 integer (180 binary) Root relaxation: objective 4.013975e+04, 465 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40139.7487 0 2 - 40139.7487 - - 0s H 0 0 40202.134147 40139.7487 0.16% - 0s H 0 0 40194.499543 40139.7487 0.14% - 0s 0 0 40144.7384 0 2 40194.4995 40144.7384 0.12% - 0s 0 0 40149.3768 0 2 40194.4995 40149.3768 0.11% - 0s 0 0 40149.7227 0 1 40194.4995 40149.7227 0.11% - 0s 0 0 40159.3949 0 2 40194.4995 40159.3949 0.09% - 0s 0 0 40171.2828 0 1 40194.4995 40171.2828 0.06% - 0s 0 0 40191.5225 0 1 40194.4995 40191.5225 0.01% - 0s Cutting planes: Gomory: 1 Implied bound: 5 Explored 0 nodes (500 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.019449954342e+04, best bound 4.019152249845e+04, gap 0.0074%