Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:15:38 2013 Optimize a model with 95367 rows, 6889 columns and 289338 nonzeros Presolve removed 4493 rows and 3460 columns Presolve time: 0.79s Presolved: 90874 rows, 3429 columns, 275742 nonzeros Variable types: 39 continuous, 3390 integer (3390 binary) Found heuristic solution: objective 158474.00000 Root relaxation: objective 1.095685e+05, 24352 iterations, 2.84 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 109568.467 0 15 158474.000 109568.467 30.9% - 4s H 0 0 109595.00000 109568.467 0.02% - 4s H 0 0 109591.00000 109568.467 0.02% - 4s H 0 0 109578.00000 109568.467 0.01% - 4s Explored 0 nodes (24674 simplex iterations) in 4.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.095780000000e+05, best bound 1.095690000000e+05, gap 0.0082%