Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:13:27 2013 Optimize a model with 88641 rows, 6561 columns and 269001 nonzeros Presolve removed 5612 rows and 3314 columns Presolve time: 0.83s Presolved: 83029 rows, 3247 columns, 251970 nonzeros Variable types: 37 continuous, 3210 integer (3210 binary) Found heuristic solution: objective 145323.00000 Root relaxation: objective 1.051678e+05, 19506 iterations, 2.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 105167.810 0 12 145323.000 105167.810 27.6% - 3s H 0 0 105190.00000 105167.810 0.02% - 3s H 0 0 105183.00000 105167.810 0.01% - 3s H 0 0 105177.00000 105167.810 0.01% - 3s Explored 0 nodes (19594 simplex iterations) in 3.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.051770000000e+05, best bound 1.051680000000e+05, gap 0.0086%