Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:32:25 2013 Optimize a model with 792 rows, 51912 columns and 103752 nonzeros Presolve time: 0.08s Presolved: 792 rows, 51912 columns, 103752 nonzeros Variable types: 51840 continuous, 72 integer (72 binary) Root relaxation: objective 8.406336e+04, 1875 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 84063.3594 0 8 - 84063.3594 - - 0s H 0 0 87289.000000 84063.3594 3.70% - 0s H 0 0 85171.000000 84063.3594 1.30% - 0s 0 0 84307.5762 0 6 85171.0000 84307.5762 1.01% - 0s 0 0 84359.6549 0 6 85171.0000 84359.6549 0.95% - 0s 0 0 84367.4226 0 3 85171.0000 84367.4226 0.94% - 0s 0 0 84367.5779 0 3 85171.0000 84367.5779 0.94% - 0s 0 0 84368.0210 0 4 85171.0000 84368.0210 0.94% - 0s 0 0 84368.3241 0 4 85171.0000 84368.3241 0.94% - 0s H 0 0 84632.000000 84368.3241 0.31% - 1s 0 0 84368.3241 0 8 84632.0000 84368.3241 0.31% - 1s 0 0 84368.3241 0 6 84632.0000 84368.3241 0.31% - 1s 0 0 84368.3241 0 6 84632.0000 84368.3241 0.31% - 1s 0 0 84368.3241 0 3 84632.0000 84368.3241 0.31% - 1s 0 0 84368.3241 0 5 84632.0000 84368.3241 0.31% - 1s 0 0 84368.3241 0 4 84632.0000 84368.3241 0.31% - 1s 0 0 84368.4954 0 3 84632.0000 84368.4954 0.31% - 1s 0 2 84376.0586 0 3 84632.0000 84376.0586 0.30% - 1s Cutting planes: Implied bound: 117 Flow cover: 8 Explored 16 nodes (5663 simplex iterations) in 2.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.463200000000e+04, best bound 8.462549202128e+04, gap 0.0077%