Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:49:32 2013 Optimize a model with 73270 rows, 72420 columns and 289170 nonzeros Presolve removed 85 rows and 0 columns Presolve time: 0.34s Presolved: 73185 rows, 72420 columns, 289085 nonzeros Variable types: 72335 continuous, 85 integer (85 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8293 7.3923899e+04 1.467401e+05 0.000000e+00 5s 10308 7.4814240e+04 7.229673e+01 0.000000e+00 10s 10531 7.4818662e+04 0.000000e+00 0.000000e+00 11s Root relaxation: objective 7.481866e+04, 10531 iterations, 10.74 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 74818.6621 0 65 - 74818.6621 - - 11s H 0 0 129371.00000 74818.6621 42.2% - 16s 0 0 92951.5894 0 18 129371.000 92951.5894 28.2% - 30s H 0 0 129137.25670 92951.5894 28.0% - 30s H 0 0 108755.00000 92951.5894 14.5% - 31s 0 0 99156.6432 0 8 108755.000 99156.6432 8.83% - 35s H 0 0 107935.00000 99156.6432 8.13% - 35s 0 0 99446.0231 0 6 107935.000 99446.0231 7.86% - 37s H 0 0 107203.00000 99446.0231 7.24% - 37s H 0 0 99624.000000 99446.0231 0.18% - 37s 0 0 99454.0798 0 4 99624.0000 99454.0798 0.17% - 38s 0 0 99464.3903 0 5 99624.0000 99464.3903 0.16% - 38s 0 0 99464.8732 0 1 99624.0000 99464.8732 0.16% - 39s 0 2 99474.9858 0 1 99624.0000 99474.9858 0.15% - 41s Cutting planes: Implied bound: 81 MIR: 1 Explored 9 nodes (23496 simplex iterations) in 43.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.962400000000e+04, best bound 9.962368627451e+04, gap 0.0003%