Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:06:04 2013 Optimize a model with 8280 rows, 12040 columns and 40020 nonzeros Presolve removed 60 rows and 40 columns Presolve time: 0.17s Presolved: 8220 rows, 12000 columns, 31960 nonzeros Variable types: 8020 continuous, 3980 integer (3980 binary) Root relaxation: objective 4.636776e+04, 3106 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46367.7551 0 2 - 46367.7551 - - 0s 0 0 46452.5971 0 2 - 46452.5971 - - 0s 0 0 46484.5166 0 5 - 46484.5166 - - 0s 0 0 46504.3991 0 5 - 46504.3991 - - 0s 0 0 46512.6767 0 5 - 46512.6767 - - 0s 0 0 46512.6767 0 5 - 46512.6767 - - 0s 0 0 46513.9999 0 5 - 46513.9999 - - 0s 0 0 46514.4596 0 5 - 46514.4596 - - 0s 0 0 46515.9031 0 3 - 46515.9031 - - 0s 0 0 46515.9080 0 4 - 46515.9080 - - 0s 0 0 46515.9162 0 5 - 46515.9162 - - 0s 0 0 46515.9356 0 5 - 46515.9356 - - 0s 0 2 46516.7933 0 5 - 46516.7933 - - 1s H 60 60 46790.569574 46558.7878 0.50% 5.8 2s H 60 60 46787.541456 46558.7878 0.49% 5.8 2s H 117 57 46653.827692 46563.2285 0.19% 6.2 2s 603 212 46588.1067 31 5 46653.8277 46587.5610 0.14% 12.6 5s Cutting planes: Gomory: 3 Flow cover: 12 Explored 2205 nodes (28166 simplex iterations) in 9.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.665382769172e+04, best bound 4.664922439210e+04, gap 0.0099%