Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:32:19 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 7.957580e+04, 2008 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 79575.7981 0 6 - 79575.7981 - - 0s H 0 0 83695.000000 79575.7981 4.92% - 0s H 0 0 82542.000000 79575.7981 3.59% - 0s 0 0 79808.3243 0 4 82542.0000 79808.3243 3.31% - 0s H 0 0 82305.000000 79808.3243 3.03% - 0s 0 0 79814.8563 0 4 82305.0000 79814.8563 3.03% - 0s H 0 0 82246.000000 79814.8563 2.96% - 0s 0 0 79819.1432 0 2 82246.0000 79819.1432 2.95% - 0s H 0 0 80864.046234 79819.1432 1.29% - 0s H 0 0 80662.000000 79819.1432 1.04% - 0s 0 0 79819.7078 0 1 80662.0000 79819.7078 1.04% - 0s 0 0 79819.7078 0 1 80662.0000 79819.7078 1.04% - 0s 0 0 79819.7078 0 6 80662.0000 79819.7078 1.04% - 1s 0 0 79819.7078 0 4 80662.0000 79819.7078 1.04% - 1s 0 0 79819.7078 0 4 80662.0000 79819.7078 1.04% - 1s 0 0 79819.7078 0 2 80662.0000 79819.7078 1.04% - 1s H 0 0 80654.000000 79819.7078 1.03% - 1s 0 0 79819.7078 0 1 80654.0000 79819.7078 1.03% - 1s H 0 0 80633.000000 79819.7078 1.01% - 1s 0 0 79819.7078 0 1 80633.0000 79819.7078 1.01% - 1s 0 2 79822.8494 0 1 80633.0000 79822.8494 1.00% - 1s H 4 3 80193.180723 79965.9728 0.28% 88.8 1s H 8 4 80013.000000 79970.9090 0.05% 54.2 2s * 9 2 8 79993.000000 79970.9090 0.03% 53.4 2s Cutting planes: Implied bound: 98 Flow cover: 4 Explored 13 nodes (5113 simplex iterations) in 2.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.999300000000e+04, best bound 7.999300000000e+04, gap 0.0%