Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:28 2013 Optimize a model with 418 rows, 14478 columns and 28918 nonzeros Presolve time: 0.02s Presolved: 418 rows, 14478 columns, 28918 nonzeros Variable types: 14440 continuous, 38 integer (38 binary) Root relaxation: objective 4.237696e+04, 746 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 42376.9573 0 8 - 42376.9573 - - 0s H 0 0 44367.000000 42376.9573 4.49% - 0s 0 0 42662.6694 0 5 44367.0000 42662.6694 3.84% - 0s 0 0 42705.7847 0 6 44367.0000 42705.7847 3.74% - 0s H 0 0 43403.000000 42705.7847 1.61% - 0s 0 0 42728.3479 0 6 43403.0000 42728.3479 1.55% - 0s H 0 0 43289.000000 42728.3479 1.30% - 0s 0 0 42731.1776 0 4 43289.0000 42731.1776 1.29% - 0s H 0 0 42951.000000 42731.1776 0.51% - 0s 0 0 42731.2818 0 4 42951.0000 42731.2818 0.51% - 0s 0 0 42731.2818 0 8 42951.0000 42731.2818 0.51% - 0s 0 0 42731.2818 0 5 42951.0000 42731.2818 0.51% - 0s 0 0 42731.2818 0 6 42951.0000 42731.2818 0.51% - 0s 0 0 42731.2818 0 6 42951.0000 42731.2818 0.51% - 0s 0 0 42731.2818 0 5 42951.0000 42731.2818 0.51% - 0s 0 0 42731.8770 0 4 42951.0000 42731.8770 0.51% - 0s H 0 0 42950.000000 42731.8770 0.51% - 0s 0 2 42740.3117 0 4 42950.0000 42740.3117 0.49% - 0s H 3 2 42839.189189 42785.5064 0.13% 37.3 0s * 4 2 3 42816.000000 42785.5064 0.07% 33.8 0s Cutting planes: Implied bound: 59 Flow cover: 4 Explored 7 nodes (2064 simplex iterations) in 0.53 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.281600000000e+04, best bound 4.281600000000e+04, gap 0.0%