Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:34 2013 Optimize a model with 1140 rows, 2020 columns and 6010 nonzeros Presolve removed 30 rows and 20 columns Presolve time: 0.04s Presolved: 1110 rows, 2000 columns, 4980 nonzeros Variable types: 1510 continuous, 490 integer (490 binary) Root relaxation: objective 2.207062e+04, 493 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 22070.6191 0 1 - 22070.6191 - - 0s 0 0 22237.3867 0 1 - 22237.3867 - - 0s 0 0 22263.7200 0 1 - 22263.7200 - - 0s 0 0 22263.7200 0 1 - 22263.7200 - - 0s 0 0 22263.8551 0 2 - 22263.8551 - - 0s 0 0 22268.7659 0 2 - 22268.7659 - - 0s 0 0 22269.1716 0 2 - 22269.1716 - - 0s 0 0 22273.1171 0 2 - 22273.1171 - - 0s 0 0 22273.2129 0 2 - 22273.2129 - - 0s 0 0 22273.6626 0 2 - 22273.6626 - - 0s H 0 0 23125.859297 22273.6626 3.69% - 0s H 0 0 23034.800723 22273.6626 3.30% - 0s 0 2 22278.8815 0 2 23034.8007 22278.8815 3.28% - 0s H 27 14 22381.782473 22329.0912 0.24% 6.2 0s * 31 15 29 22378.870677 22329.0912 0.22% 5.7 0s * 35 1 2 22336.247039 22332.2351 0.02% 6.9 0s * 36 0 2 22333.127867 22333.1279 0.0% 6.8 0s Cutting planes: Gomory: 1 Flow cover: 8 Explored 37 nodes (863 simplex iterations) in 0.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.233312786709e+04, best bound 2.233312786709e+04, gap 0.0%