Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:17:18 2012 Optimize a model with 27215 rows, 28392 columns and 109198 nonzeros Presolve removed 1034 rows and 4034 columns Presolve time: 0.66s Presolved: 26181 rows, 24358 columns, 102334 nonzeros Variable types: 0 continuous, 24358 integer (24358 binary) Found heuristic solution: objective 168.0000000 Root relaxation: objective 3.000000e+00, 16564 iterations, 2.83 seconds Total elapsed time = 12.60s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 22 168.00000 3.00000 98.2% - 14s H 0 0 3.0000000 3.00000 0.0% - 14s Explored 0 nodes (50561 simplex iterations) in 14.37 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%