Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:39 2012 Optimize a model with 81 rows, 75 columns and 275 nonzeros Presolve removed 0 rows and 4 columns Presolve time: 0.00s Presolved: 81 rows, 71 columns, 271 nonzeros Variable types: 0 continuous, 71 integer (70 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 0.000000e+00, 40 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 30 17.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.29213 0 32 10.00000 0.29213 97.1% - 0s 0 0 0.81501 0 35 10.00000 0.81501 91.8% - 0s H 0 0 7.0000000 0.81501 88.4% - 0s 0 0 0.81501 0 35 7.00000 0.81501 88.4% - 0s H 0 0 5.0000000 0.81501 83.7% - 0s 0 2 0.83408 0 35 5.00000 0.83408 83.3% - 0s * 17 0 6 4.0000000 4.00000 0.0% 12.4 0s Cutting planes: Gomory: 4 Explored 18 nodes (423 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%