Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:19:36 2013 Optimize a model with 1350 rows, 400 columns and 4200 nonzeros Presolve removed 201 rows and 201 columns Presolve time: 0.01s Presolved: 1149 rows, 199 columns, 3600 nonzeros Variable types: 9 continuous, 190 integer (190 binary) Found heuristic solution: objective 7037.0000000 Root relaxation: objective 5.185519e+03, 671 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5185.51914 0 8 7037.00000 5185.51914 26.3% - 0s H 0 0 5214.0000000 5185.51914 0.55% - 0s H 0 0 5201.0000000 5185.51914 0.30% - 0s 0 0 5188.90473 0 8 5201.00000 5188.90473 0.23% - 0s 0 0 5188.90473 0 9 5201.00000 5188.90473 0.23% - 0s 0 0 5189.60542 0 11 5201.00000 5189.60542 0.22% - 0s H 0 0 5197.0000000 5189.60542 0.14% - 0s 0 2 5190.46507 0 11 5197.00000 5190.46507 0.13% - 0s H 5 4 5196.0000000 5190.76295 0.10% 0.0 0s H 6 5 5194.0000000 5191.36696 0.05% 0.0 0s Cutting planes: Gomory: 2 Cover: 1 Implied bound: 1 MIR: 15 Zero half: 10 Explored 10 nodes (893 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.194000000000e+03, best bound 5.194000000000e+03, gap 0.0%