Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:58 2012 Optimize a model with 53 rows, 49 columns and 179 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 53 rows, 47 columns, 177 nonzeros Variable types: 0 continuous, 47 integer (46 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 0.000000e+00, 27 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 18 9.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.26415 0 20 4.00000 0.26415 93.4% - 0s 0 0 0.87661 0 23 4.00000 0.87661 78.1% - 0s 0 0 0.87661 0 23 4.00000 0.87661 78.1% - 0s 0 2 0.88067 0 23 4.00000 0.88067 78.0% - 0s * 18 5 4 3.0000000 1.07860 64.0% 10.2 0s Cutting planes: Gomory: 4 Explored 24 nodes (343 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%