Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:06:11 2012 Optimize a model with 461 rows, 433 columns and 1583 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 461 rows, 411 columns, 1561 nonzeros Variable types: 0 continuous, 411 integer (410 binary) Found heuristic solution: objective 88.0000000 Root relaxation: objective 0.000000e+00, 245 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 0 174 88.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s H 0 0 70.0000000 0.00000 100% - 0s 0 0 0.27194 0 176 70.00000 0.27194 100% - 0s H 0 0 69.0000000 0.27194 100% - 0s 0 0 0.80304 0 179 69.00000 0.80304 98.8% - 0s H 0 0 63.0000000 0.80304 98.7% - 0s H 0 0 61.0000000 0.80304 98.7% - 0s 0 0 0.80304 0 179 61.00000 0.80304 98.7% - 0s H 0 0 55.0000000 0.80304 98.5% - 0s H 0 0 50.0000000 0.80304 98.4% - 0s H 0 0 47.0000000 0.80304 98.3% - 0s 0 2 0.80614 0 179 47.00000 0.80614 98.3% - 0s H 27 27 45.0000000 1.00000 97.8% 54.7 0s H 54 54 20.0000000 1.00000 95.0% 38.8 0s * 71 51 43 18.0000000 1.00000 94.4% 35.0 0s H 105 61 14.0000000 1.01613 92.7% 33.0 0s H 326 107 12.0000000 1.23424 89.7% 36.5 0s Cutting planes: Gomory: 4 Zero half: 2 Mod-K: 1 Explored 883 nodes (31289 simplex iterations) in 1.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%