Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:47:11 2013 Optimize a model with 280 rows, 2100 columns and 11250 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.01s Presolved: 270 rows, 2090 columns, 10240 nonzeros Variable types: 2020 continuous, 70 integer (70 binary) Root relaxation: objective 2.207062e+04, 189 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 22070.6191 0 3 - 22070.6191 - - 0s 0 0 22070.6191 0 4 - 22070.6191 - - 0s 0 0 22071.3434 0 3 - 22071.3434 - - 0s 0 0 22071.3434 0 3 - 22071.3434 - - 0s 0 0 22071.3434 0 3 - 22071.3434 - - 0s 0 0 22071.4565 0 3 - 22071.4565 - - 0s 0 0 22071.4565 0 3 - 22071.4565 - - 0s 0 0 22071.5066 0 3 - 22071.5066 - - 0s 0 0 22071.5066 0 3 - 22071.5066 - - 0s 0 0 22071.5066 0 3 - 22071.5066 - - 0s 0 0 22071.5066 0 3 - 22071.5066 - - 0s H 0 0 22404.650981 22071.5066 1.49% - 0s 0 2 22148.5365 0 3 22404.6510 22148.5365 1.14% - 0s * 5 4 5 22345.260974 22286.0643 0.26% 6.2 0s * 19 8 10 22336.259203 22333.0241 0.01% 3.9 0s * 23 1 7 22333.158214 22333.1582 0.0% 3.5 0s Cutting planes: Flow cover: 6 Explored 24 nodes (378 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.233315821446e+04, best bound 2.233315821446e+04, gap 0.0%