Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:42:38 2013 Optimize a model with 680 rows, 45200 columns and 528420 nonzeros Presolve removed 20 rows and 980 columns Presolve time: 1.62s Presolved: 660 rows, 44220 columns, 488420 nonzeros Variable types: 44020 continuous, 200 integer (200 binary) Root relaxation: objective 4.642213e+04, 641 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46422.1265 0 24 - 46422.1265 - - 2s 0 0 46422.3679 0 24 - 46422.3679 - - 2s 0 0 46422.3679 0 24 - 46422.3679 - - 2s 0 0 46422.3679 0 24 - 46422.3679 - - 3s 0 0 46422.3679 0 24 - 46422.3679 - - 3s 0 0 46422.3679 0 24 - 46422.3679 - - 3s 0 0 46422.3679 0 24 - 46422.3679 - - 4s 0 2 46422.9929 0 24 - 46422.9929 - - 12s 173 173 47404.7302 139 8 - 46423.2205 - 7.6 15s * 217 210 175 47951.180784 46423.2205 3.19% 6.8 15s * 222 205 172 47950.818992 46423.2205 3.19% 6.7 15s * 265 72 41 46888.323259 46429.1925 0.98% 6.8 16s H 273 48 46835.532789 46429.1925 0.87% 7.3 16s * 291 47 27 46813.605955 46429.1925 0.82% 7.1 16s H 327 45 46789.929843 46436.7235 0.75% 7.1 17s * 348 50 18 46789.770671 46442.2630 0.74% 7.2 17s * 395 54 20 46789.171852 46449.0751 0.73% 7.2 17s H 398 29 46751.576931 46465.4266 0.61% 7.3 18s * 412 35 18 46744.956439 46465.4266 0.60% 7.2 18s 535 32 46739.7580 6 6 46744.9564 46719.3867 0.05% 8.0 20s Cutting planes: Flow cover: 5 Explored 606 nodes (6495 simplex iterations) in 20.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.674495643917e+04, best bound 4.674083580523e+04, gap 0.0088%