Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:04:49 2013 Optimize a model with 300 rows, 3110 columns and 22280 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.04s Presolved: 290 rows, 3100 columns, 20270 nonzeros Variable types: 3020 continuous, 80 integer (80 binary) Root relaxation: objective 2.207062e+04, 172 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 22070.6639 0 3 - 22070.6639 - - 0s 0 0 22070.9621 0 3 - 22070.9621 - - 0s 0 0 22070.9621 0 3 - 22070.9621 - - 0s 0 0 22070.9952 0 3 - 22070.9952 - - 0s 0 0 22071.0374 0 3 - 22071.0374 - - 0s 0 0 22071.0374 0 3 - 22071.0374 - - 0s 0 0 22071.0534 0 3 - 22071.0534 - - 0s 0 0 22071.0534 0 3 - 22071.0534 - - 0s 0 0 22071.0842 0 3 - 22071.0842 - - 0s 0 0 22071.0842 0 3 - 22071.0842 - - 0s 0 0 22071.0842 0 3 - 22071.0842 - - 0s 0 0 22071.0842 0 3 - 22071.0842 - - 0s 0 0 22071.0842 0 3 - 22071.0842 - - 0s H 0 0 23176.859086 22071.0842 4.77% - 0s 0 2 22227.4420 0 3 23176.8591 22227.4420 4.10% - 0s * 14 5 10 22336.262945 22333.1279 0.01% 7.5 0s * 18 1 9 22333.163337 22333.1633 0.0% 6.2 0s Cutting planes: Flow cover: 6 Explored 19 nodes (711 simplex iterations) in 0.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.233316333700e+04, best bound 2.233316333700e+04, gap 0.0%