Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:37 2012 Optimize a model with 111 rows, 106 columns and 381 nonzeros Presolve removed 0 rows and 5 columns Presolve time: 0.00s Presolved: 111 rows, 101 columns, 376 nonzeros Variable types: 0 continuous, 101 integer (100 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 0.000000e+00, 74 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 45 22.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.44444 0 46 10.00000 0.44444 95.6% - 0s H 0 0 9.0000000 0.44444 95.1% - 0s 0 0 1.00000 0 51 9.00000 1.00000 88.9% - 0s 0 0 1.00000 0 49 9.00000 1.00000 88.9% - 0s H 0 0 6.0000000 1.00000 83.3% - 0s 0 0 1.00000 0 49 6.00000 1.00000 83.3% - 0s 0 0 1.00000 0 47 6.00000 1.00000 83.3% - 0s 0 2 1.00000 0 45 6.00000 1.00000 83.3% - 0s * 32 10 12 5.0000000 1.46903 70.6% 16.6 0s * 87 0 6 4.0000000 4.00000 0.0% 10.0 0s Cutting planes: Gomory: 3 Zero half: 1 Mod-K: 1 Explored 88 nodes (1344 simplex iterations) in 0.06 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%