Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:42:32 2013 Optimize a model with 1540 rows, 196140 columns and 392140 nonzeros Presolve time: 0.46s Presolved: 1540 rows, 196140 columns, 392140 nonzeros Variable types: 196000 continuous, 140 integer (140 binary) Root relaxation: objective 2.366518e+05, 6721 iterations, 0.53 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 236651.832 0 6 - 236651.832 - - 1s H 0 0 247194.00000 236651.832 4.26% - 1s H 0 0 238333.00000 236651.832 0.71% - 2s 0 0 236865.349 0 5 238333.000 236865.349 0.62% - 2s 0 0 236865.349 0 6 238333.000 236865.349 0.62% - 3s 0 0 236865.349 0 5 238333.000 236865.349 0.62% - 4s 0 0 236902.308 0 5 238333.000 236902.308 0.60% - 4s 0 0 236912.592 0 5 238333.000 236912.592 0.60% - 4s 0 0 236913.516 0 4 238333.000 236913.516 0.60% - 4s 0 0 236913.516 0 4 238333.000 236913.516 0.60% - 4s 0 0 236913.516 0 4 238333.000 236913.516 0.60% - 5s 0 2 236917.842 0 4 238333.000 236917.842 0.59% - 6s H 5 4 237826.00000 237000.821 0.35% 229 7s H 6 5 237348.53623 237000.821 0.15% 205 7s H 7 3 237344.07246 237000.821 0.14% 191 7s H 9 4 237317.85714 237000.821 0.13% 149 7s * 12 3 11 237283.00000 237000.821 0.12% 116 7s Cutting planes: Implied bound: 100 Flow cover: 6 Explored 30 nodes (15027 simplex iterations) in 8.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.372830000000e+05, best bound 2.372633113216e+05, gap 0.0083%