Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:47 2012 Optimize a model with 115 rows, 103 columns and 388 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 115 rows, 102 columns, 387 nonzeros Variable types: 0 continuous, 102 integer (101 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 78 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 42 29.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.50560 0 43 21.00000 0.50560 97.6% - 0s H 0 0 19.0000000 0.50560 97.3% - 0s H 0 0 16.0000000 0.50560 96.8% - 0s 0 0 1.18001 0 45 16.00000 1.18001 92.6% - 0s H 0 0 15.0000000 1.18001 92.1% - 0s 0 0 1.54390 0 47 15.00000 1.54390 89.7% - 0s 0 0 1.55250 0 49 15.00000 1.55250 89.7% - 0s 0 0 1.55250 0 48 15.00000 1.55250 89.7% - 0s 0 2 1.55302 0 48 15.00000 1.55302 89.6% - 0s * 23 14 16 9.0000000 2.21134 75.4% 15.5 0s * 34 11 8 7.0000000 2.46801 64.7% 16.7 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 56 nodes (1223 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%