Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:55:48 2013 Optimize a model with 57150 rows, 56400 columns and 225150 nonzeros Presolve removed 75 rows and 0 columns Presolve time: 0.26s Presolved: 57075 rows, 56400 columns, 225075 nonzeros Variable types: 56325 continuous, 75 integer (75 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 6902 6.4079362e+04 2.373084e+04 0.000000e+00 5s 7911 6.4310880e+04 0.000000e+00 0.000000e+00 7s Root relaxation: objective 6.431088e+04, 7911 iterations, 7.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 64310.8800 0 62 - 64310.8800 - - 7s H 0 0 100432.00000 64310.8800 36.0% - 11s 0 0 78885.7158 0 20 100432.000 78885.7158 21.5% - 21s H 0 0 93577.000000 78885.7158 15.7% - 22s 0 0 83710.8770 0 7 93577.0000 83710.8770 10.5% - 25s H 0 0 90419.026329 83710.8770 7.42% - 25s H 0 0 89700.000000 83710.8770 6.68% - 25s H 0 0 84262.000000 83710.8770 0.65% - 25s 0 0 83711.4251 0 6 84262.0000 83711.4251 0.65% - 25s 0 2 83711.6141 0 6 84262.0000 83711.6141 0.65% - 27s H 15 9 84092.500000 83795.9790 0.35% 190 29s 15 11 83978.0000 11 1 84092.5000 83795.9790 0.35% 193 30s H 25 13 84089.000000 83795.9790 0.35% 138 30s H 45 5 83991.439716 83874.4567 0.14% 123 32s * 48 5 5 83970.000000 83914.4118 0.07% 135 32s * 52 1 6 83945.000000 83938.1593 0.01% 133 33s Cutting planes: Implied bound: 75 Explored 53 nodes (23387 simplex iterations) in 33.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.394500000000e+04, best bound 8.393815925059e+04, gap 0.0081%