Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:52 2012 Optimize a model with 143 rows, 88 columns and 443 nonzeros Presolve time: 0.00s Presolved: 143 rows, 88 columns, 443 nonzeros Variable types: 0 continuous, 88 integer (88 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 0.000000e+00, 26 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 17 35.00000 0.00000 100% - 0s 0 0 0.80672 0 19 35.00000 0.80672 97.7% - 0s 0 0 0.85714 0 19 35.00000 0.85714 97.6% - 0s 0 0 0.90756 0 19 35.00000 0.90756 97.4% - 0s H 0 0 31.0000000 0.90756 97.1% - 0s 0 0 0.90756 0 19 31.00000 0.90756 97.1% - 0s 0 0 0.93233 0 25 31.00000 0.93233 97.0% - 0s 0 0 0.95798 0 19 31.00000 0.95798 96.9% - 0s 0 0 0.95798 0 19 31.00000 0.95798 96.9% - 0s 0 0 0.95798 0 19 31.00000 0.95798 96.9% - 0s 0 2 1.12381 0 19 31.00000 1.12381 96.4% - 0s * 18 17 12 30.0000000 6.30000 79.0% 20.4 0s * 19 15 11 29.0000000 6.30000 78.3% 19.5 0s H 54 19 28.0000000 8.90909 68.2% 14.7 0s * 88 29 10 27.0000000 14.20000 47.4% 14.9 0s Cutting planes: Gomory: 1 Mod-K: 7 Explored 229 nodes (2894 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%