Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:31:59 2012 Optimize a model with 104 rows, 56 columns and 208 nonzeros Presolve removed 19 rows and 6 columns Presolve time: 0.00s Presolved: 85 rows, 50 columns, 176 nonzeros Variable types: 0 continuous, 50 integer (50 binary) Found heuristic solution: objective 25.0000000 Root relaxation: objective 2.720000e+01, 56 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 27.20000 0 42 25.00000 27.20000 8.80% - 0s H 0 0 26.0000000 27.20000 4.62% - 0s Cutting planes: Gomory: 1 Explored 0 nodes (64 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.700000000000e+01, gap 3.8462%