Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:47:26 2013 Optimize a model with 4280 rows, 8040 columns and 24020 nonzeros Presolve removed 60 rows and 40 columns Presolve time: 0.18s Presolved: 4220 rows, 8000 columns, 19960 nonzeros Variable types: 6020 continuous, 1980 integer (1980 binary) Root relaxation: objective 4.636776e+04, 1732 iterations, 0.03 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 46484.7369 0 5 - 46484.7369 - - 0s 0 0 46504.3902 0 3 - 46504.3902 - - 0s 0 0 46511.5073 0 3 - 46511.5073 - - 0s 0 0 46513.4011 0 5 - 46513.4011 - - 0s 0 0 46514.1076 0 5 - 46514.1076 - - 0s 0 0 46514.4992 0 5 - 46514.4992 - - 0s 0 0 46515.0865 0 3 - 46515.0865 - - 0s 0 0 46515.1601 0 4 - 46515.1601 - - 0s 0 0 46516.3049 0 3 - 46516.3049 - - 0s 0 0 46517.3260 0 4 - 46517.3260 - - 0s 0 0 46517.4135 0 4 - 46517.4135 - - 0s 0 0 46517.4676 0 4 - 46517.4676 - - 0s 0 2 46517.6769 0 4 - 46517.6769 - - 1s H 31 29 46749.637553 46531.4414 0.47% 11.2 1s H 31 29 46745.627317 46531.4414 0.46% 11.2 1s H 195 80 46671.971125 46564.2527 0.23% 7.0 1s * 199 50 28 46653.879319 46564.2527 0.19% 7.1 1s H 201 48 46653.827166 46564.2527 0.19% 7.0 1s Cutting planes: Gomory: 2 Flow cover: 14 Explored 522 nodes (5685 simplex iterations) in 2.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.665382716636e+04, best bound 4.664920316996e+04, gap 0.0099%