Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:12:40 2013 Optimize a model with 60214 rows, 59444 columns and 237314 nonzeros Presolve removed 77 rows and 0 columns Presolve time: 0.27s Presolved: 60137 rows, 59444 columns, 237237 nonzeros Variable types: 59367 continuous, 77 integer (77 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7799 6.9119826e+04 1.436197e+04 0.000000e+00 5s 9207 6.9755323e+04 0.000000e+00 0.000000e+00 8s Root relaxation: objective 6.975532e+04, 9207 iterations, 8.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69755.3228 0 63 - 69755.3228 - - 8s H 0 0 117088.00000 69755.3228 40.4% - 14s 0 0 90046.4191 0 17 117088.000 90046.4191 23.1% - 28s H 0 0 106237.00000 90046.4191 15.2% - 28s 0 0 93477.5421 0 5 106237.000 93477.5421 12.0% - 30s H 0 0 98421.620813 93477.5421 5.02% - 30s H 0 0 97069.000000 93477.5421 3.70% - 30s H 0 0 95351.000000 93477.5421 1.96% - 31s 0 0 93937.1537 0 7 95351.0000 93937.1537 1.48% - 31s 0 0 93993.3226 0 5 95351.0000 93993.3226 1.42% - 32s H 0 0 94734.000000 93993.3226 0.78% - 33s 0 2 94014.7314 0 5 94734.0000 94014.7314 0.76% - 33s 4 4 94612.0057 2 5 94734.0000 94166.5557 0.60% 452 35s H 7 4 94686.235294 94166.5557 0.55% 318 35s * 8 3 6 94572.000000 94166.5557 0.43% 342 35s Cutting planes: Implied bound: 75 Explored 15 nodes (23831 simplex iterations) in 35.92 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.457200000000e+04, best bound 9.457200000000e+04, gap 0.0%