Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:53:22 2012 Optimize a model with 349 rows, 359 columns and 1229 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 349 rows, 333 columns, 1203 nonzeros Variable types: 0 continuous, 333 integer (332 binary) Found heuristic solution: objective 61.0000000 Root relaxation: objective 0.000000e+00, 208 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 0 140 61.00000 0.00000 100% - 0s H 0 0 52.0000000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s 0 0 0.19802 0 143 50.00000 0.19802 100% - 0s H 0 0 36.0000000 0.19802 99.4% - 0s 0 0 0.79921 0 148 36.00000 0.79921 97.8% - 0s H 0 0 22.0000000 0.79921 96.4% - 0s H 0 0 21.0000000 0.79921 96.2% - 0s 0 0 0.79921 0 150 21.00000 0.79921 96.2% - 0s 0 0 0.79921 0 147 21.00000 0.79921 96.2% - 0s H 0 0 19.0000000 0.79921 95.8% - 0s H 0 0 14.0000000 0.79921 94.3% - 0s 0 2 0.82048 0 147 14.00000 0.82048 94.1% - 0s H 27 27 11.0000000 0.84981 92.3% 37.0 0s * 42 32 29 9.0000000 0.84981 90.6% 26.7 0s * 114 50 24 8.0000000 3.06200 61.7% 21.8 0s * 152 39 32 7.0000000 3.06530 56.2% 18.5 0s * 178 13 7 6.0000000 4.22800 29.5% 18.4 0s Cutting planes: Gomory: 4 Explored 196 nodes (4333 simplex iterations) in 0.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%