Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:21:09 2013 Optimize a model with 982 rows, 17610 columns and 764185 nonzeros Presolve removed 25 rows and 107 columns Presolve time: 3.29s Presolved: 957 rows, 17503 columns, 761737 nonzeros Variable types: 0 continuous, 17503 integer (17503 binary) Found heuristic solution: objective 8235.0000000 Root relaxation: objective 6.055655e+03, 4201 iterations, 1.35 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 6055.65517 0 61 8235.00000 6055.65517 26.5% - 4s H 0 0 6101.0000000 6055.65517 0.74% - 5s H 0 0 6068.0000000 6055.65517 0.20% - 5s 0 0 6059.83333 0 88 6068.00000 6059.83333 0.13% - 6s 0 0 6059.83333 0 52 6068.00000 6059.83333 0.13% - 8s 0 0 6063.50000 0 37 6068.00000 6063.50000 0.07% - 9s 0 0 6063.85714 0 75 6068.00000 6063.85714 0.07% - 9s H 0 0 6066.0000000 6063.85714 0.04% - 9s 0 1 6063.85714 0 75 6066.00000 6063.85714 0.04% - 10s Cutting planes: Gomory: 1 Clique: 3 Explored 1 nodes (7394 simplex iterations) in 10.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.066000000000e+03, best bound 6.066000000000e+03, gap 0.0%