Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:50 2013 Optimize a model with 720 rows, 4860 columns and 10900 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.03s Presolved: 700 rows, 4840 columns, 10480 nonzeros Variable types: 4440 continuous, 400 integer (400 binary) Root relaxation: objective 3.709539e+04, 433 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37095.3933 0 8 - 37095.3933 - - 0s 0 0 37139.4738 0 6 - 37139.4738 - - 0s 0 0 37139.6401 0 7 - 37139.6401 - - 0s 0 0 37140.4817 0 2 - 37140.4817 - - 0s 0 0 37140.4817 0 2 - 37140.4817 - - 0s 0 0 37140.4817 0 2 - 37140.4817 - - 0s 0 0 37140.4817 0 2 - 37140.4817 - - 0s 0 0 37140.4817 0 2 - 37140.4817 - - 0s H 0 0 37291.650431 37140.4817 0.41% - 0s 0 1 37175.5998 0 5 37291.6504 37175.5998 0.31% - 0s * 27 4 23 37253.378676 37252.7906 0.00% 14.3 0s Cutting planes: Gomory: 2 Implied bound: 13 Flow cover: 5 Explored 28 nodes (1319 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.725337867584e+04, best bound 3.725279063639e+04, gap 0.0016%