Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:44 2013 Optimize a model with 240 rows, 1320 columns and 2810 nonzeros Presolve removed 20 rows and 30 columns Presolve time: 0.00s Presolved: 220 rows, 1290 columns, 2580 nonzeros Variable types: 1200 continuous, 90 integer (90 binary) Root relaxation: objective 2.162324e+04, 159 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21623.2446 0 2 - 21623.2446 - - 0s 0 0 21648.3676 0 3 - 21648.3676 - - 0s 0 0 21648.4141 0 4 - 21648.4141 - - 0s 0 0 21648.4141 0 4 - 21648.4141 - - 0s H 0 0 21770.062588 21648.4141 0.56% - 0s 0 2 21653.4358 0 4 21770.0626 21653.4358 0.54% - 0s * 5 5 4 21763.564963 21715.6536 0.22% 8.6 0s * 8 4 6 21759.973325 21715.6536 0.20% 6.0 0s * 12 4 5 21758.343794 21739.3461 0.09% 4.8 0s Cutting planes: Gomory: 2 Flow cover: 4 Explored 20 nodes (289 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.175834379400e+04, best bound 2.175834379400e+04, gap 0.0%