Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:26:24 2012 Optimize a model with 269 rows, 208 columns and 878 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 269 rows, 207 columns, 877 nonzeros Variable types: 0 continuous, 207 integer (206 binary) Found heuristic solution: objective 64.0000000 Root relaxation: objective 0.000000e+00, 100 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 72 64.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.48611 0 73 34.00000 0.48611 98.6% - 0s 0 0 1.00000 0 75 34.00000 1.00000 97.1% - 0s 0 0 1.00000 0 76 34.00000 1.00000 97.1% - 0s 0 0 1.00000 0 74 34.00000 1.00000 97.1% - 0s H 0 0 33.0000000 1.00000 97.0% - 0s 0 2 1.00000 0 72 33.00000 1.00000 97.0% - 0s H 27 27 21.0000000 3.28415 84.4% 37.4 0s Cutting planes: Gomory: 1 Explored 3810 nodes (76199 simplex iterations) in 2.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%