Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:51:45 2013 Optimize a model with 74906 rows, 74046 columns and 295926 nonzeros Presolve removed 5686 rows and 0 columns Presolve time: 0.49s Presolved: 69220 rows, 74046 columns, 284554 nonzeros Variable types: 73960 continuous, 86 integer (86 binary) Root relaxation: objective 9.324948e+04, 14545 iterations, 3.60 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 93249.4803 0 4 - 93249.4803 - - 4s H 0 0 94477.000000 93249.4803 1.30% - 4s 0 0 93249.9045 0 5 94477.0000 93249.9045 1.30% - 5s 0 0 93250.3373 0 4 94477.0000 93250.3373 1.30% - 5s 0 0 93250.3373 0 4 94477.0000 93250.3373 1.30% - 6s H 0 0 93557.000000 93250.3373 0.33% - 8s 0 0 93250.3373 0 4 93557.0000 93250.3373 0.33% - 12s 0 0 93250.4429 0 4 93557.0000 93250.4429 0.33% - 12s 0 0 93250.4429 0 4 93557.0000 93250.4429 0.33% - 12s 0 2 93257.4684 0 4 93557.0000 93257.4684 0.32% - 14s 3 3 93462.3013 3 2 93557.0000 93415.4781 0.15% 199 15s * 5 2 5 93484.000000 93415.4781 0.07% 153 15s Cutting planes: Gomory: 1 Flow cover: 9 Explored 8 nodes (23483 simplex iterations) in 15.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.348400000000e+04, best bound 9.348400000000e+04, gap 0.0%