Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:19 2012 Optimize a model with 167 rows, 102 columns and 517 nonzeros Presolve time: 0.00s Presolved: 167 rows, 102 columns, 517 nonzeros Variable types: 0 continuous, 102 integer (102 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 0.000000e+00, 43 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 19 45.00000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s 0 0 1.00877 0 24 37.00000 1.00877 97.3% - 0s 0 0 1.05263 0 21 37.00000 1.05263 97.2% - 0s 0 0 1.06908 0 29 37.00000 1.06908 97.1% - 0s 0 0 1.09649 0 22 37.00000 1.09649 97.0% - 0s 0 0 1.22807 0 24 37.00000 1.22807 96.7% - 0s 0 0 1.27193 0 26 37.00000 1.27193 96.6% - 0s 0 0 1.28289 0 28 37.00000 1.28289 96.5% - 0s 0 0 1.28289 0 26 37.00000 1.28289 96.5% - 0s 0 2 1.29167 0 26 37.00000 1.29167 96.5% - 0s * 36 26 11 36.0000000 6.08333 83.1% 23.1 0s * 98 55 11 35.0000000 14.14286 59.6% 20.6 0s * 104 52 12 34.0000000 14.14286 58.4% 19.8 0s * 142 59 13 33.0000000 15.44444 53.2% 18.2 0s * 241 64 9 32.0000000 17.50000 45.3% 17.4 0s * 692 42 13 31.0000000 25.00000 19.4% 13.7 0s Cutting planes: Gomory: 1 Zero half: 17 Explored 782 nodes (10503 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%