Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:57:07 2013 Optimize a model with 726 rows, 43626 columns and 87186 nonzeros Presolve time: 0.06s Presolved: 726 rows, 43626 columns, 87186 nonzeros Variable types: 43560 continuous, 66 integer (66 binary) Root relaxation: objective 7.937836e+04, 1699 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 79378.3566 0 7 - 79378.3566 - - 0s H 0 0 82691.000000 79378.3566 4.01% - 0s H 0 0 79920.000000 79378.3566 0.68% - 0s 0 0 79564.7596 0 4 79920.0000 79564.7596 0.44% - 0s 0 0 79582.0275 0 3 79920.0000 79582.0275 0.42% - 0s 0 0 79584.9325 0 2 79920.0000 79584.9325 0.42% - 0s 0 0 79585.1514 0 5 79920.0000 79585.1514 0.42% - 0s 0 0 79587.2793 0 3 79920.0000 79587.2793 0.42% - 0s 0 0 79587.6426 0 3 79920.0000 79587.6426 0.42% - 0s 0 0 79587.6465 0 2 79920.0000 79587.6465 0.42% - 0s 0 0 79587.6465 0 7 79920.0000 79587.6465 0.42% - 1s 0 0 79587.6465 0 4 79920.0000 79587.6465 0.42% - 1s 0 0 79587.6465 0 3 79920.0000 79587.6465 0.42% - 1s 0 0 79587.6465 0 2 79920.0000 79587.6465 0.42% - 1s 0 0 79587.6465 0 4 79920.0000 79587.6465 0.42% - 1s 0 0 79587.6465 0 3 79920.0000 79587.6465 0.42% - 1s 0 0 79587.6465 0 3 79920.0000 79587.6465 0.42% - 1s 0 0 79587.6465 0 2 79920.0000 79587.6465 0.42% - 1s 0 2 79588.8086 0 2 79920.0000 79588.8086 0.41% - 1s * 9 4 8 79871.000000 79648.4468 0.28% 65.4 1s Cutting planes: Implied bound: 82 Flow cover: 4 Explored 15 nodes (4712 simplex iterations) in 1.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.987100000000e+04, best bound 7.987100000000e+04, gap 0.0%