Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:31 2013 Optimize a model with 1016 rows, 2013 columns and 7025 nonzeros Presolve removed 13 rows and 54 columns Presolve time: 0.04s Presolved: 1003 rows, 1959 columns, 5876 nonzeros Variable types: 1000 continuous, 959 integer (959 binary) Found heuristic solution: objective 3502.0000000 Root relaxation: objective 3.497351e+03, 8 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3497.35061 0 2 3502.00000 3497.35061 0.13% - 0s 0 0 3497.60289 0 2 3502.00000 3497.60289 0.13% - 0s 0 0 3497.85278 0 2 3502.00000 3497.85278 0.12% - 0s 0 0 3498.10033 0 2 3502.00000 3498.10033 0.11% - 0s 0 0 3498.34562 0 2 3502.00000 3498.34562 0.10% - 0s 0 0 3498.58868 0 2 3502.00000 3498.58868 0.10% - 0s 0 0 3498.82958 0 2 3502.00000 3498.82958 0.09% - 0s 0 0 3499.06837 0 2 3502.00000 3499.06837 0.08% - 0s 0 0 3499.30509 0 2 3502.00000 3499.30509 0.08% - 0s 0 0 3499.53980 0 2 3502.00000 3499.53980 0.07% - 0s 0 0 3499.77253 0 2 3502.00000 3499.77253 0.06% - 0s 0 0 3500.00334 0 2 3502.00000 3500.00334 0.06% - 0s 0 0 3500.23226 0 2 3502.00000 3500.23226 0.05% - 0s 0 0 3500.45932 0 2 3502.00000 3500.45932 0.04% - 0s 0 0 3500.68458 0 2 3502.00000 3500.68458 0.04% - 0s 0 0 3500.90806 0 2 3502.00000 3500.90806 0.03% - 0s 0 0 3501.12980 0 2 3502.00000 3501.12980 0.02% - 0s 0 0 3501.34983 0 2 3502.00000 3501.34983 0.02% - 0s 0 0 3501.56819 0 2 3502.00000 3501.56819 0.01% - 0s 0 0 3501.78490 0 2 3502.00000 3501.78490 0.01% - 0s Explored 0 nodes (101 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.502000000000e+03, best bound 3.501784901913e+03, gap 0.0061%