Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:01:41 2012 Optimize a model with 43142 rows, 39006 columns and 167448 nonzeros Presolve removed 22 rows and 3942 columns Presolve time: 0.95s Presolved: 43120 rows, 35064 columns, 163070 nonzeros Variable types: 0 continuous, 35064 integer (35064 binary) Found heuristic solution: objective 197.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 426 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 340 3.00000 2.00000 33.3% - 1s Explored 0 nodes (756 simplex iterations) in 1.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%