Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:11 2012 Optimize a model with 97 rows, 89 columns and 329 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 97 rows, 88 columns, 328 nonzeros Variable types: 0 continuous, 88 integer (87 binary) Found heuristic solution: objective 19.0000000 Found heuristic solution: objective 17.0000000 Root relaxation: objective 0.000000e+00, 56 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 39 17.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.39310 0 41 9.00000 0.39310 95.6% - 0s 0 0 0.95564 0 44 9.00000 0.95564 89.4% - 0s 0 0 0.96152 0 45 9.00000 0.96152 89.3% - 0s 0 0 0.96152 0 45 9.00000 0.96152 89.3% - 0s H 0 0 7.0000000 0.96152 86.3% - 0s H 0 0 5.0000000 0.96152 80.8% - 0s 0 2 0.96798 0 45 5.00000 0.96798 80.6% - 0s * 21 1 3 4.0000000 2.18362 45.4% 10.7 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 23 nodes (485 simplex iterations) in 0.05 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%