Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:01:25 2013 Optimize a model with 708 rows, 5474 columns and 372632 nonzeros Presolve removed 1 rows and 1 columns Presolve time: 0.74s Presolved: 707 rows, 5473 columns, 372556 nonzeros Variable types: 0 continuous, 5473 integer (5473 binary) Found heuristic solution: objective 3096.0000000 Root relaxation: objective 2.659250e+03, 1045 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2659.25000 0 26 3096.00000 2659.25000 14.1% - 1s H 0 0 2681.0000000 2659.25000 0.81% - 1s * 0 0 0 2660.0000000 2660.00000 0.0% - 1s Cutting planes: Gomory: 2 Clique: 2 Zero half: 9 Explored 0 nodes (1517 simplex iterations) in 1.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.660000000000e+03, best bound 2.660000000000e+03, gap 0.0%