Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:43 2013 Optimize a model with 2140 rows, 3020 columns and 10010 nonzeros Presolve removed 30 rows and 20 columns Presolve time: 0.12s Presolved: 2110 rows, 3000 columns, 7980 nonzeros Variable types: 2010 continuous, 990 integer (990 binary) Root relaxation: objective 2.162324e+04, 810 iterations, 0.01 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 21664.2420 0 5 - 21664.2420 - - 0s 0 0 21681.2868 0 3 - 21681.2868 - - 0s 0 0 21686.7955 0 3 - 21686.7955 - - 0s 0 0 21686.7990 0 4 - 21686.7990 - - 0s H 0 0 22484.627037 21686.7990 3.55% - 0s 0 2 21689.4791 0 4 22484.6270 21689.4791 3.54% - 0s H 37 37 21832.161271 21704.1699 0.59% 5.2 0s * 38 35 37 21828.295142 21704.1699 0.57% 8.2 0s H 52 27 21760.574357 21713.4675 0.22% 9.0 0s * 53 25 18 21759.631599 21713.4675 0.21% 9.8 0s * 266 62 11 21759.464859 21734.7327 0.11% 12.4 1s * 295 65 19 21759.387167 21735.4072 0.11% 12.6 1s * 301 60 12 21759.199381 21735.6093 0.11% 12.9 1s Cutting planes: Gomory: 2 Flow cover: 9 Explored 512 nodes (7045 simplex iterations) in 1.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.175919938108e+04, best bound 2.175759755283e+04, gap 0.0074%