Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:13:14 2013 Optimize a model with 76734 rows, 75864 columns and 302934 nonzeros Presolve removed 87 rows and 0 columns Presolve time: 0.36s Presolved: 76647 rows, 75864 columns, 302847 nonzeros Variable types: 75777 continuous, 87 integer (87 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8978 8.0333109e+04 1.021191e+06 0.000000e+00 5s 10716 8.1697725e+04 6.436830e+05 0.000000e+00 10s 12485 8.2198431e+04 0.000000e+00 0.000000e+00 15s Root relaxation: objective 8.219843e+04, 12485 iterations, 15.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 82198.4305 0 71 - 82198.4305 - - 15s H 0 0 168839.00000 82198.4305 51.3% - 33s 0 0 125312.299 0 17 168839.000 125312.299 25.8% - 54s H 0 0 148935.00000 125312.299 15.9% - 55s 0 0 134764.775 0 3 148935.000 134764.775 9.51% - 61s H 0 0 142600.07266 134764.775 5.49% - 61s H 0 0 140914.00000 134764.775 4.36% - 61s 0 0 134949.790 0 2 140914.000 134949.790 4.23% - 61s H 0 0 136785.95089 134949.790 1.34% - 61s H 0 0 136328.00000 134949.790 1.01% - 62s 0 2 134959.905 0 2 136328.000 134959.905 1.00% - 63s * 2 2 2 135125.00000 135037.000 0.07% 490 64s Cutting planes: Implied bound: 84 Explored 4 nodes (31621 simplex iterations) in 64.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.351250000000e+05, best bound 1.351250000000e+05, gap 0.0%