Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:30:07 2012 Optimize a model with 26659 rows, 29756 columns and 108874 nonzeros Presolve removed 346 rows and 2 columns Presolve time: 0.60s Presolved: 26485 rows, 29754 columns, 137292 nonzeros Variable types: 0 continuous, 29754 integer (29754 binary) Found heuristic solution: objective 172.0000000 Root relaxation: objective 3.000000e+00, 16260 iterations, 2.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 131 172.00000 3.00000 98.3% - 4s H 0 0 4.0000000 3.00000 25.0% - 4s H 0 0 3.0000000 3.00000 0.0% - 4s Explored 0 nodes (45518 simplex iterations) in 4.19 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%