Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:56 2012 Optimize a model with 101 rows, 97 columns and 347 nonzeros Presolve removed 0 rows and 6 columns Presolve time: 0.00s Presolved: 101 rows, 91 columns, 341 nonzeros Variable types: 0 continuous, 91 integer (90 binary) Found heuristic solution: objective 20.0000000 Root relaxation: objective 0.000000e+00, 57 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 40 20.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.42500 0 41 9.00000 0.42500 95.3% - 0s 0 0 1.00000 0 43 9.00000 1.00000 88.9% - 0s 0 0 1.00000 0 44 9.00000 1.00000 88.9% - 0s 0 0 1.00000 0 44 9.00000 1.00000 88.9% - 0s 0 2 1.00000 0 43 9.00000 1.00000 88.9% - 0s * 14 14 11 7.0000000 1.00000 85.7% 20.5 0s * 17 13 13 6.0000000 1.00000 83.3% 18.4 0s * 29 6 8 4.0000000 2.09160 47.7% 14.9 0s Cutting planes: Gomory: 3 Zero half: 2 Explored 35 nodes (775 simplex iterations) in 0.02 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%