Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:48 2013 Optimize a model with 220 rows, 1170 columns and 2760 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.00s Presolved: 210 rows, 1160 columns, 2650 nonzeros Variable types: 1120 continuous, 40 integer (40 binary) Root relaxation: objective 2.162324e+04, 152 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 6 - 21623.2446 - - 0s 0 0 21635.3883 0 8 - 21635.3883 - - 0s 0 0 21655.0002 0 10 - 21655.0002 - - 0s 0 0 21655.0002 0 10 - 21655.0002 - - 0s H 0 0 21795.976005 21655.0002 0.65% - 0s H 0 0 21770.062588 21655.0002 0.53% - 0s 0 2 21739.2055 0 7 21770.0626 21739.2055 0.14% - 0s * 4 3 4 21760.795916 21750.0284 0.05% 16.2 0s * 6 2 4 21758.698909 21750.0284 0.04% 11.5 0s * 14 2 5 21758.343794 21755.9993 0.01% 5.8 0s Cutting planes: Gomory: 1 Flow cover: 2 Explored 17 nodes (413 simplex iterations) in 0.04 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%