Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:11:08 2013 Optimize a model with 1400 rows, 38250 columns and 150750 nonzeros Presolve removed 50 rows and 2850 columns Presolve time: 0.21s Presolved: 1350 rows, 35400 columns, 140750 nonzeros Variable types: 35050 continuous, 350 integer (350 binary) Root relaxation: objective 2.208160e+05, 2400 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 16 - 220815.985 - - 0s 0 0 220835.932 0 16 - 220835.932 - - 0s 0 0 220839.092 0 16 - 220839.092 - - 0s 0 0 220841.165 0 16 - 220841.165 - - 0s 0 0 220842.502 0 12 - 220842.502 - - 0s 0 0 220842.502 0 12 - 220842.502 - - 0s 0 0 220842.540 0 16 - 220842.540 - - 1s 0 0 220842.557 0 16 - 220842.557 - - 1s 0 0 220842.557 0 16 - 220842.557 - - 1s 0 2 220842.901 0 16 - 220842.901 - - 3s * 61 26 56 221500.10921 220891.588 0.27% 19.2 4s * 88 31 23 221491.46389 221021.156 0.21% 18.7 4s H 117 35 221481.00576 221025.314 0.21% 18.4 4s 162 42 221417.477 13 4 221481.006 221180.687 0.14% 18.3 5s H 201 40 221478.84865 221211.740 0.12% 19.8 5s H 282 45 221478.72864 221297.213 0.08% 18.1 6s * 361 54 24 221478.54532 221311.553 0.08% 16.3 6s H 363 54 221477.31127 221311.553 0.07% 16.2 6s * 377 53 19 221476.97512 221317.910 0.07% 15.9 6s Cutting planes: Flow cover: 14 Explored 500 nodes (10582 simplex iterations) in 7.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214769751213e+05, best bound 2.214552589785e+05, gap 0.0098%