Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:15:39 2013 Optimize a model with 987 rows, 324 columns and 3078 nonzeros Presolve removed 312 rows and 174 columns Presolve time: 0.00s Presolved: 675 rows, 150 columns, 2144 nonzeros Variable types: 8 continuous, 142 integer (142 binary) Found heuristic solution: objective 4909.0000000 Root relaxation: objective 3.733216e+03, 24 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3733.21622 0 7 4909.00000 3733.21622 24.0% - 0s H 0 0 3738.0000000 3733.21622 0.13% - 0s 0 0 3735.84035 0 17 3738.00000 3735.84035 0.06% - 0s 0 0 3735.84035 0 8 3738.00000 3735.84035 0.06% - 0s 0 0 cutoff 0 3738.00000 3737.00374 0.03% - 0s Cutting planes: Gomory: 1 Implied bound: 3 Clique: 1 MIR: 7 Explored 0 nodes (137 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.738000000000e+03, best bound 3.738000000000e+03, gap 0.0%