Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:48 2013 Optimize a model with 1320 rows, 6060 columns and 15100 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.15s Presolved: 1300 rows, 6040 columns, 14080 nonzeros Variable types: 5040 continuous, 1000 integer (1000 binary) Root relaxation: objective 3.573401e+04, 471 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35734.0139 0 6 - 35734.0139 - - 0s 0 0 35846.3066 0 8 - 35846.3066 - - 0s 0 0 35858.3458 0 8 - 35858.3458 - - 0s 0 0 35858.4787 0 8 - 35858.4787 - - 0s 0 0 35858.4787 0 8 - 35858.4787 - - 0s 0 2 35858.4787 0 8 - 35858.4787 - - 0s * 25 9 13 36175.683193 36098.3654 0.21% 40.4 0s Cutting planes: Gomory: 3 Implied bound: 65 Flow cover: 5 Explored 31 nodes (1826 simplex iterations) in 0.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.617568319306e+04, best bound 3.617317645456e+04, gap 0.0069%