Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:11:41 2013 Optimize a model with 82239 rows, 6241 columns and 249640 nonzeros Presolve removed 4410 rows and 3136 columns Presolve time: 0.74s Presolved: 77829 rows, 3105 columns, 236602 nonzeros Variable types: 41 continuous, 3064 integer (3064 binary) Found heuristic solution: objective 135260.00000 Root relaxation: objective 9.438320e+04, 33536 iterations, 4.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 94383.2000 0 13 135260.000 94383.2000 30.2% - 5s H 0 0 94399.000000 94383.2000 0.02% - 5s H 0 0 94395.000000 94383.2000 0.01% - 5s 0 0 94383.9971 0 33 94395.0000 94383.9971 0.01% - 5s 0 0 94383.9971 0 14 94395.0000 94383.9971 0.01% - 6s 0 0 94384.0789 0 45 94395.0000 94384.0789 0.01% - 6s 0 0 94384.2624 0 36 94395.0000 94384.2624 0.01% - 6s H 0 0 94394.000000 94384.2624 0.01% - 6s 0 2 94385.1057 0 36 94394.0000 94385.1057 0.01% - 6s Cutting planes: Gomory: 1 Implied bound: 1 MIR: 13 Zero half: 1 Explored 1 nodes (39218 simplex iterations) in 6.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.439400000000e+04, best bound 9.438600000000e+04, gap 0.0085%