Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:59:50 2013 Optimize a model with 68142 rows, 67322 columns and 269042 nonzeros Presolve removed 4420 rows and 0 columns Presolve time: 0.43s Presolved: 63722 rows, 67322 columns, 260202 nonzeros Variable types: 67240 continuous, 82 integer (82 binary) Root relaxation: objective 1.172308e+05, 19195 iterations, 3.94 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 117230.752 0 2 - 117230.752 - - 4s H 0 0 117966.00000 117230.752 0.62% - 4s 0 0 117231.003 0 3 117966.000 117231.003 0.62% - 5s 0 0 117231.003 0 2 117966.000 117231.003 0.62% - 9s 0 0 117231.013 0 3 117966.000 117231.013 0.62% - 10s 0 2 117242.486 0 3 117966.000 117242.486 0.61% - 11s H 3 3 117677.00000 117342.996 0.28% 123 12s H 9 6 117587.68750 117342.996 0.21% 86.0 12s H 10 6 117477.83333 117342.996 0.11% 78.7 12s * 12 4 11 117453.00000 117342.996 0.09% 68.9 12s Cutting planes: Gomory: 1 Flow cover: 1 Explored 22 nodes (29205 simplex iterations) in 12.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.174530000000e+05, best bound 1.174530000000e+05, gap 0.0%