Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:00:57 2013 Optimize a model with 25800 rows, 75150 columns and 225250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 1.10s Presolved: 25750 rows, 75100 columns, 200200 nonzeros Variable types: 50100 continuous, 25000 integer (25000 binary) Root relaxation: objective 1.959342e+05, 4330 iterations, 0.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 6 - 195934.242 - - 1s 0 0 196152.891 0 4 - 196152.891 - - 2s 0 0 196166.985 0 4 - 196166.985 - - 2s 0 0 196167.048 0 4 - 196167.048 - - 2s 0 0 196167.048 0 4 - 196167.048 - - 3s H 0 0 196577.04597 196167.048 0.21% - 3s 0 2 196178.195 0 2 196577.046 196178.195 0.20% - 4s 3 2 196458.571 2 4 196577.046 196376.246 0.10% 172 5s 54 2 196542.596 52 2 196577.046 196376.246 0.10% 13.4 10s 143 2 196563.055 141 2 196577.046 196376.246 0.10% 7.3 15s H 216 1 196570.65000 196376.246 0.10% 6.0 18s 233 1 196438.484 10 4 196570.650 196438.484 0.07% 6.2 20s 325 1 196500.855 102 6 196570.650 196500.855 0.04% 5.7 25s 416 3 196552.859 190 2 196570.650 196537.704 0.02% 5.3 30s 483 3 196557.443 254 2 196570.650 196537.704 0.02% 4.9 35s 567 3 196560.263 337 2 196570.650 196537.704 0.02% 4.5 40s 625 3 196561.109 395 2 196570.650 196537.704 0.02% 4.3 45s H 648 2 196566.26625 196537.704 0.01% 4.2 48s 689 3 196561.950 458 2 196566.266 196537.704 0.01% 4.1 50s 780 3 196563.026 549 2 196566.266 196537.704 0.01% 3.9 55s 862 3 196563.930 631 2 196566.266 196537.704 0.01% 3.7 60s * 888 8 653 196564.86183 196537.704 0.01% 3.7 61s Cutting planes: Gomory: 1 Implied bound: 40 Flow cover: 1 Explored 892 nodes (8488 simplex iterations) in 61.76 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965648618316e+05, best bound 1.965466636178e+05, gap 0.0093%