Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:01:15 2013 Optimize a model with 129 rows, 81 columns and 405 nonzeros Presolve removed 66 rows and 46 columns Presolve time: 0.00s Presolved: 63 rows, 35 columns, 207 nonzeros Variable types: 3 continuous, 32 integer (32 binary) Found heuristic solution: objective 2577.0000000 Found heuristic solution: objective 2366.0000000 Root relaxation: objective 2.161226e+03, 11 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2161.22581 0 4 2366.00000 2161.22581 8.65% - 0s H 0 0 2204.0000000 2161.22581 1.94% - 0s 0 0 2171.77294 0 10 2204.00000 2171.77294 1.46% - 0s * 0 0 0 2174.0000000 2174.00000 0.0% - 0s Cutting planes: Gomory: 3 Implied bound: 3 Clique: 12 MIR: 4 Explored 0 nodes (30 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.174000000000e+03, best bound 2.174000000000e+03, gap 0.0%