Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:04:48 2013 Optimize a model with 298 rows, 144 columns and 936 nonzeros Presolve removed 70 rows and 70 columns Presolve time: 0.00s Presolved: 228 rows, 74 columns, 756 nonzeros Variable types: 8 continuous, 66 integer (66 binary) Found heuristic solution: objective 2403.0000000 Root relaxation: objective 1.637936e+03, 30 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1637.93617 0 9 2403.00000 1637.93617 31.8% - 0s H 0 0 1659.0000000 1637.93617 1.27% - 0s 0 0 1638.53487 0 14 1659.00000 1638.53487 1.23% - 0s 0 0 1639.55600 0 17 1659.00000 1639.55600 1.17% - 0s 0 0 1639.55600 0 6 1659.00000 1639.55600 1.17% - 0s H 0 0 1657.0000000 1639.55600 1.05% - 0s 0 0 1641.07507 0 16 1657.00000 1641.07507 0.96% - 0s 0 0 1642.44268 0 18 1657.00000 1642.44268 0.88% - 0s 0 0 1642.61639 0 18 1657.00000 1642.61639 0.87% - 0s 0 0 1643.12882 0 18 1657.00000 1643.12882 0.84% - 0s 0 0 1643.33845 0 18 1657.00000 1643.33845 0.82% - 0s 0 0 1643.59875 0 18 1657.00000 1643.59875 0.81% - 0s 0 0 1643.80236 0 19 1657.00000 1643.80236 0.80% - 0s 0 0 1644.17429 0 16 1657.00000 1644.17429 0.77% - 0s 0 0 1644.25422 0 17 1657.00000 1644.25422 0.77% - 0s 0 0 1644.25577 0 18 1657.00000 1644.25577 0.77% - 0s 0 2 1644.64716 0 18 1657.00000 1644.64716 0.75% - 0s H 5 2 1648.0000000 1647.50000 0.03% 4.2 0s Cutting planes: Gomory: 1 Cover: 1 MIR: 11 Explored 5 nodes (236 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.648000000000e+03, best bound 1.648000000000e+03, gap 0.0%