Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:14:25 2013 Optimize a model with 572 rows, 27092 columns and 54132 nonzeros Presolve time: 0.04s Presolved: 572 rows, 27092 columns, 54132 nonzeros Variable types: 27040 continuous, 52 integer (52 binary) Root relaxation: objective 4.712908e+04, 975 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47129.0813 0 4 - 47129.0813 - - 0s H 0 0 48226.000000 47129.0813 2.27% - 0s H 0 0 47826.000000 47129.0813 1.46% - 0s 0 0 47344.8611 0 2 47826.0000 47344.8611 1.01% - 0s 0 0 47358.5135 0 3 47826.0000 47358.5135 0.98% - 0s 0 0 47365.7804 0 5 47826.0000 47365.7804 0.96% - 0s 0 0 47367.5849 0 2 47826.0000 47367.5849 0.96% - 0s 0 0 47367.6709 0 2 47826.0000 47367.6709 0.96% - 0s 0 0 47367.6709 0 2 47826.0000 47367.6709 0.96% - 0s 0 0 47368.3873 0 2 47826.0000 47368.3873 0.96% - 0s 0 0 47368.7852 0 2 47826.0000 47368.7852 0.96% - 0s 0 0 47368.7852 0 4 47826.0000 47368.7852 0.96% - 0s 0 0 47368.7852 0 2 47826.0000 47368.7852 0.96% - 0s 0 0 47368.7852 0 4 47826.0000 47368.7852 0.96% - 0s 0 0 47368.7852 0 3 47826.0000 47368.7852 0.96% - 0s 0 0 47368.7852 0 3 47826.0000 47368.7852 0.96% - 0s 0 0 47368.7852 0 2 47826.0000 47368.7852 0.96% - 0s 0 0 47368.7852 0 2 47826.0000 47368.7852 0.96% - 0s 0 2 47372.1446 0 2 47826.0000 47372.1446 0.95% - 0s H 2 1 47773.000000 47436.5435 0.70% 69.5 1s H 3 2 47622.254545 47447.5000 0.37% 50.0 1s H 5 2 47604.574769 47485.3029 0.25% 59.8 1s H 7 3 47559.400000 47485.3029 0.16% 49.4 1s * 8 2 7 47528.000000 47485.3029 0.09% 46.5 1s Cutting planes: Implied bound: 53 Flow cover: 3 Explored 11 nodes (2693 simplex iterations) in 1.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.752800000000e+04, best bound 4.752800000000e+04, gap 0.0%