Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:52:23 2013 Optimize a model with 74906 rows, 74046 columns and 295926 nonzeros Presolve removed 2653 rows and 0 columns Presolve time: 0.48s Presolved: 72253 rows, 74046 columns, 290620 nonzeros Variable types: 73960 continuous, 86 integer (86 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20522 1.2311352e+05 6.808121e+01 0.000000e+00 5s 20630 1.2311671e+05 0.000000e+00 0.000000e+00 5s Root relaxation: objective 1.231167e+05, 20630 iterations, 5.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 123116.705 0 5 - 123116.705 - - 5s H 0 0 126379.00000 123116.705 2.58% - 6s H 0 0 123676.00000 123116.705 0.45% - 6s 0 0 123142.891 0 7 123676.000 123142.891 0.43% - 7s 0 0 123143.201 0 7 123676.000 123143.201 0.43% - 7s 0 0 123143.301 0 7 123676.000 123143.301 0.43% - 7s 0 0 123199.981 0 5 123676.000 123199.981 0.38% - 9s H 0 0 123504.00000 123199.981 0.25% - 10s 0 0 123199.981 0 4 123504.000 123199.981 0.25% - 13s 0 0 123200.836 0 5 123504.000 123200.836 0.25% - 13s 0 0 123200.836 0 5 123504.000 123200.836 0.25% - 14s 0 2 123205.165 0 5 123504.000 123205.165 0.24% - 15s * 5 3 4 123417.00000 123320.362 0.08% 131 15s Cutting planes: Gomory: 3 Flow cover: 8 Explored 12 nodes (28751 simplex iterations) in 16.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.234170000000e+05, best bound 1.234170000000e+05, gap 0.0%