Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:27 2013 Optimize a model with 1016 rows, 2013 columns and 7025 nonzeros Presolve removed 13 rows and 54 columns Presolve time: 0.06s Presolved: 1003 rows, 1959 columns, 5876 nonzeros Variable types: 1000 continuous, 959 integer (959 binary) Found heuristic solution: objective 3432.7438354 Root relaxation: objective 3.427793e+03, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3427.79282 0 2 3432.74384 3427.79282 0.14% - 0s 0 0 3428.03192 0 2 3432.74384 3428.03192 0.14% - 0s 0 0 3428.26874 0 2 3432.74384 3428.26874 0.13% - 0s 0 0 3428.50332 0 2 3432.74384 3428.50332 0.12% - 0s 0 0 3428.73572 0 2 3432.74384 3428.73572 0.12% - 0s 0 0 3428.96601 0 2 3432.74384 3428.96601 0.11% - 0s 0 0 3429.19423 0 2 3432.74384 3429.19423 0.10% - 0s 0 0 3429.42043 0 2 3432.74384 3429.42043 0.10% - 0s 0 0 3429.64465 0 2 3432.74384 3429.64465 0.09% - 0s 0 0 3429.86696 0 2 3432.74384 3429.86696 0.08% - 0s 0 0 3430.08737 0 2 3432.74384 3430.08737 0.08% - 0s 0 0 3430.30595 0 2 3432.74384 3430.30595 0.07% - 0s 0 0 3430.52272 0 2 3432.74384 3430.52272 0.06% - 0s 0 0 3430.73773 0 2 3432.74384 3430.73773 0.06% - 0s 0 0 3430.95101 0 2 3432.74384 3430.95101 0.05% - 0s 0 0 3431.16259 0 2 3432.74384 3431.16259 0.05% - 0s 0 0 3431.37251 0 2 3432.74384 3431.37251 0.04% - 0s 0 0 3431.58081 0 2 3432.74384 3431.58081 0.03% - 0s 0 0 3431.78750 0 2 3432.74384 3431.78750 0.03% - 0s 0 0 3431.99263 0 2 3432.74384 3431.99263 0.02% - 0s 0 0 3432.19622 0 2 3432.74384 3432.19622 0.02% - 0s 0 0 3432.39830 0 2 3432.74384 3432.39830 0.01% - 0s 0 0 3432.59874 0 2 3432.74384 3432.59874 0.00% - 0s Explored 0 nodes (117 simplex iterations) in 0.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.432743835411e+03, best bound 3.432598738049e+03, gap 0.0042%