Gurobi 5.0.1 (linux64) logging started Wed Apr 24 06:14:31 2013 Optimize a model with 83811 rows, 82901 columns and 331331 nonzeros Presolve removed 6576 rows and 0 columns Presolve time: 0.60s Presolved: 77235 rows, 82901 columns, 318179 nonzeros Variable types: 82810 continuous, 91 integer (91 binary) Root relaxation: objective 1.149838e+05, 17792 iterations, 4.67 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 114983.848 0 5 - 114983.848 - - 5s H 0 0 120665.00000 114983.848 4.71% - 5s 0 0 114987.522 0 6 120665.000 114987.522 4.71% - 6s 0 0 114987.610 0 6 120665.000 114987.610 4.71% - 7s H 0 0 118538.36278 114987.610 3.00% - 9s 0 2 114988.079 0 6 118538.363 114988.079 3.00% - 10s H 4 4 118327.26693 115251.726 2.60% 334 12s H 9 9 115717.26316 115251.726 0.40% 299 13s H 11 10 115645.86029 115251.726 0.34% 256 13s * 12 9 10 115548.00000 115251.726 0.26% 244 13s 25 7 cutoff 8 115548.000 115404.553 0.12% 184 15s Cutting planes: Gomory: 1 Flow cover: 4 Explored 40 nodes (23885 simplex iterations) in 16.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.155480000000e+05, best bound 1.155480000000e+05, gap 0.0%