Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:11 2012 Optimize a model with 157 rows, 136 columns and 526 nonzeros Presolve removed 0 rows and 5 columns Presolve time: 0.00s Presolved: 157 rows, 131 columns, 521 nonzeros Variable types: 0 continuous, 131 integer (130 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 75 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 50 29.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.27815 0 52 22.00000 0.27815 98.7% - 0s H 0 0 20.0000000 0.27815 98.6% - 0s 0 0 0.89999 0 54 20.00000 0.89999 95.5% - 0s 0 0 0.90311 0 55 20.00000 0.90311 95.5% - 0s 0 0 0.90311 0 55 20.00000 0.90311 95.5% - 0s 0 2 0.92095 0 55 20.00000 0.92095 95.4% - 0s * 13 11 9 13.0000000 2.80256 78.4% 31.7 0s * 25 15 8 12.0000000 2.92555 75.6% 22.4 0s * 33 17 14 11.0000000 2.92555 73.4% 18.4 0s Cutting planes: Gomory: 3 Zero half: 1 Explored 126 nodes (1913 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%