Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:33 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 2.199252e+04, 417 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21992.5209 0 2 - 21992.5209 - - 0s 0 0 22059.8181 0 2 - 22059.8181 - - 0s 0 0 22073.0204 0 4 - 22073.0204 - - 0s 0 0 22077.2669 0 4 - 22077.2669 - - 0s 0 0 22083.9858 0 3 - 22083.9858 - - 0s 0 0 22088.1663 0 3 - 22088.1663 - - 0s H 0 0 22930.355339 22088.1663 3.67% - 0s 0 2 22088.7227 0 3 22930.3553 22088.7227 3.67% - 0s H 81 37 22480.693576 22099.3185 1.70% 5.2 0s * 87 33 84 22463.799544 22099.3185 1.62% 5.7 0s * 147 83 58 22461.215592 22099.3851 1.61% 5.3 0s H 159 14 22141.712813 22102.3533 0.18% 5.6 0s * 199 0 5 22134.932338 22134.9323 0.0% 6.1 0s Cutting planes: Gomory: 4 Flow cover: 7 Explored 200 nodes (1753 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.213493233821e+04, best bound 2.213493233821e+04, gap 0.0%