Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:11 2012 Optimize a model with 81 rows, 81 columns and 281 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 81 rows, 79 columns, 279 nonzeros Variable types: 0 continuous, 79 integer (78 binary) Found heuristic solution: objective 16.0000000 Root relaxation: objective 0.000000e+00, 48 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 33 16.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.40310 0 35 6.00000 0.40310 93.3% - 0s H 0 0 5.0000000 0.40310 91.9% - 0s 0 0 0.84337 0 38 5.00000 0.84337 83.1% - 0s 0 0 0.84484 0 41 5.00000 0.84484 83.1% - 0s 0 0 0.84484 0 41 5.00000 0.84484 83.1% - 0s H 0 0 4.0000000 0.84484 78.9% - 0s 0 2 0.85043 0 39 4.00000 0.85043 78.7% - 0s * 21 9 5 3.0000000 1.00000 66.7% 14.1 0s Cutting planes: Gomory: 3 Zero half: 3 Explored 41 nodes (742 simplex iterations) in 0.02 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%