Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:02:47 2013 Optimize a model with 556 rows, 5162 columns and 210116 nonzeros Presolve removed 6 rows and 0 columns Presolve time: 0.28s Presolved: 550 rows, 5162 columns, 209955 nonzeros Variable types: 0 continuous, 5162 integer (5162 binary) Found heuristic solution: objective 3368.0000000 Root relaxation: objective 1.953500e+03, 793 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1953.50000 0 20 3368.00000 1953.50000 42.0% - 0s H 0 0 1994.0000000 1953.50000 2.03% - 0s 0 0 1960.66667 0 26 1994.00000 1960.66667 1.67% - 0s H 0 0 1985.0000000 1960.66667 1.23% - 1s 0 0 1960.66667 0 31 1985.00000 1960.66667 1.23% - 1s * 0 0 0 1962.0000000 1962.00000 0.0% - 1s Cutting planes: Gomory: 2 Clique: 4 Zero half: 11 Explored 0 nodes (2052 simplex iterations) in 1.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.962000000000e+03, best bound 1.962000000000e+03, gap 0.0%