Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:27 2012 Optimize a model with 193 rows, 155 columns and 635 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 193 rows, 154 columns, 634 nonzeros Variable types: 0 continuous, 154 integer (153 binary) Found heuristic solution: objective 37.0000000 Root relaxation: objective 0.000000e+00, 97 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 53 37.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.32995 0 55 27.00000 0.32995 98.8% - 0s H 0 0 25.0000000 0.32995 98.7% - 0s 0 0 1.08612 0 57 25.00000 1.08612 95.7% - 0s H 0 0 20.0000000 1.08612 94.6% - 0s 0 0 1.09086 0 61 20.00000 1.09086 94.5% - 0s 0 0 1.09086 0 58 20.00000 1.09086 94.5% - 0s 0 2 1.09116 0 58 20.00000 1.09116 94.5% - 0s * 17 17 11 18.0000000 2.16688 88.0% 26.5 0s * 35 23 10 15.0000000 4.45516 70.3% 29.2 0s * 59 29 11 14.0000000 6.31952 54.9% 26.0 0s * 89 15 7 12.0000000 8.31790 30.7% 22.9 0s Cutting planes: Gomory: 3 Zero half: 3 Explored 109 nodes (2659 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%