Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:57:08 2012 Optimize a model with 20635 rows, 23870 columns and 85006 nonzeros Presolve removed 336 rows and 4006 columns Presolve time: 0.45s Presolved: 20299 rows, 19864 columns, 79968 nonzeros Variable types: 0 continuous, 19864 integer (19864 binary) Found heuristic solution: objective 154.0000000 Root relaxation: objective 3.000000e+00, 11969 iterations, 1.15 seconds Total elapsed time = 8.20s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 75 154.00000 3.00000 98.1% - 8s H 0 0 3.0000000 3.00000 0.0% - 9s Explored 0 nodes (38628 simplex iterations) in 9.01 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%