Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:09:05 2013 Optimize a model with 539 rows, 24059 columns and 48069 nonzeros Presolve time: 0.03s Presolved: 539 rows, 24059 columns, 48069 nonzeros Variable types: 24010 continuous, 49 integer (49 binary) Root relaxation: objective 4.649318e+04, 730 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46493.1775 0 11 - 46493.1775 - - 0s H 0 0 51516.000000 46493.1775 9.75% - 0s H 0 0 47180.000000 46493.1775 1.46% - 0s 0 0 46896.1757 0 9 47180.0000 46896.1757 0.60% - 0s 0 0 46913.6648 0 7 47180.0000 46913.6648 0.56% - 0s 0 0 46917.6077 0 8 47180.0000 46917.6077 0.56% - 0s 0 0 46917.8453 0 7 47180.0000 46917.8453 0.56% - 0s 0 0 46918.4361 0 6 47180.0000 46918.4361 0.55% - 0s 0 0 46931.6010 0 3 47180.0000 46931.6010 0.53% - 0s 0 0 46931.6010 0 11 47180.0000 46931.6010 0.53% - 0s 0 0 46931.6010 0 5 47180.0000 46931.6010 0.53% - 0s 0 0 46931.6010 0 3 47180.0000 46931.6010 0.53% - 0s 0 0 46931.7737 0 4 47180.0000 46931.7737 0.53% - 0s 0 0 46932.2266 0 3 47180.0000 46932.2266 0.53% - 0s 0 0 46932.3196 0 5 47180.0000 46932.3196 0.52% - 0s 0 0 46932.7129 0 5 47180.0000 46932.7129 0.52% - 0s 0 0 46932.7129 0 5 47180.0000 46932.7129 0.52% - 0s 0 2 46935.8883 0 5 47180.0000 46935.8883 0.52% - 0s H 27 4 47110.000000 46981.0936 0.27% 18.3 0s * 59 12 6 47094.000000 47031.6722 0.13% 18.6 1s Cutting planes: Implied bound: 90 Flow cover: 8 Explored 74 nodes (3055 simplex iterations) in 1.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.709400000000e+04, best bound 4.709152780388e+04, gap 0.0052%