Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:00:53 2013 Optimize a model with 1200 rows, 26400 columns and 57950 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.08s Presolved: 1150 rows, 26350 columns, 56900 nonzeros Variable types: 26100 continuous, 250 integer (250 binary) Root relaxation: objective 2.208160e+05, 2060 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 12 - 220815.985 - - 0s 0 0 220872.981 0 9 - 220872.981 - - 0s 0 0 220885.568 0 12 - 220885.568 - - 0s 0 0 220892.754 0 14 - 220892.754 - - 0s 0 0 220894.954 0 11 - 220894.954 - - 0s 0 0 220894.954 0 11 - 220894.954 - - 0s 0 0 220896.282 0 14 - 220896.282 - - 0s 0 0 220897.625 0 14 - 220897.625 - - 0s 0 0 220898.293 0 14 - 220898.293 - - 0s 0 0 220898.834 0 14 - 220898.834 - - 0s 0 0 220905.012 0 14 - 220905.012 - - 0s 0 0 220905.051 0 15 - 220905.051 - - 0s 0 0 220905.068 0 15 - 220905.068 - - 0s 0 0 220905.444 0 11 - 220905.444 - - 0s 0 0 220905.444 0 11 - 220905.444 - - 1s 0 2 220906.898 0 11 - 220906.898 - - 1s * 45 26 42 223049.86834 221118.821 0.87% 26.3 2s * 68 11 23 221476.58715 221161.454 0.14% 22.5 3s Cutting planes: Flow cover: 15 Explored 90 nodes (5498 simplex iterations) in 3.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214765871511e+05, best bound 2.214608091339e+05, gap 0.0071%