Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:01:58 2012 Optimize a model with 399 rows, 397 columns and 1392 nonzeros Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 399 rows, 376 columns, 1371 nonzeros Variable types: 0 continuous, 376 integer (375 binary) Found heuristic solution: objective 72.0000000 Root relaxation: objective 0.000000e+00, 247 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 0 162 72.00000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s 0 0 0.35388 0 163 49.00000 0.35388 99.3% - 0s H 0 0 42.0000000 0.35388 99.2% - 0s 0 0 1.00000 0 166 42.00000 1.00000 97.6% - 0s H 0 0 36.0000000 1.00000 97.2% - 0s 0 0 1.00000 0 166 36.00000 1.00000 97.2% - 0s 0 0 1.00000 0 164 36.00000 1.00000 97.2% - 0s H 0 0 29.0000000 1.00000 96.6% - 0s H 0 0 25.0000000 1.00000 96.0% - 0s 0 2 1.00000 0 164 25.00000 1.00000 96.0% - 0s H 27 27 13.0000000 1.00000 92.3% 33.4 0s H 54 37 12.0000000 1.00000 91.7% 20.9 0s H 108 62 11.0000000 2.41493 78.0% 19.5 0s H 135 43 10.0000000 3.05435 69.5% 20.6 0s H 249 30 9.0000000 5.75385 36.1% 24.8 0s Cutting planes: Gomory: 2 Explored 320 nodes (8680 simplex iterations) in 0.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%