Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:45 2012 Optimize a model with 409 rows, 403 columns and 1423 nonzeros Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 409 rows, 382 columns, 1402 nonzeros Variable types: 0 continuous, 382 integer (381 binary) Found heuristic solution: objective 76.0000000 Root relaxation: objective 0.000000e+00, 249 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 0 159 76.00000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s 0 0 0.31433 0 161 54.00000 0.31433 99.4% - 0s H 0 0 47.0000000 0.31433 99.3% - 0s 0 0 0.77458 0 166 47.00000 0.77458 98.4% - 0s H 0 0 44.0000000 0.77458 98.2% - 0s H 0 0 43.0000000 0.77458 98.2% - 0s 0 0 0.77501 0 169 43.00000 0.77501 98.2% - 0s 0 0 0.77501 0 167 43.00000 0.77501 98.2% - 0s H 0 0 41.0000000 0.77501 98.1% - 0s H 0 0 37.0000000 0.77501 97.9% - 0s H 0 0 34.0000000 0.77501 97.7% - 0s 0 2 0.77725 0 166 34.00000 0.77725 97.7% - 0s H 27 27 15.0000000 1.73529 88.4% 34.4 0s H 54 30 11.0000000 1.73529 84.2% 21.2 0s * 68 19 11 8.0000000 2.23214 72.1% 23.9 0s Cutting planes: Gomory: 4 Explored 102 nodes (3433 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%