Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:26 2012 Optimize a model with 343 rows, 346 columns and 1201 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 343 rows, 323 columns, 1178 nonzeros Variable types: 0 continuous, 323 integer (322 binary) Found heuristic solution: objective 69.0000000 Root relaxation: objective 0.000000e+00, 202 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 0 141 69.00000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s 0 0 0.35614 0 143 33.00000 0.35614 98.9% - 0s H 0 0 21.0000000 0.35614 98.3% - 0s H 0 0 20.0000000 0.35614 98.2% - 0s 0 0 0.86887 0 146 20.00000 0.86887 95.7% - 0s 0 0 0.87003 0 148 20.00000 0.87003 95.6% - 0s 0 0 0.87003 0 148 20.00000 0.87003 95.6% - 0s 0 2 0.87232 0 147 20.00000 0.87232 95.6% - 0s * 47 18 31 8.0000000 1.00000 87.5% 21.0 0s * 137 27 30 7.0000000 2.07814 70.3% 18.3 0s * 191 10 11 6.0000000 4.38636 26.9% 21.6 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 202 nodes (5157 simplex iterations) in 0.23 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%