Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:58:48 2012 Optimize a model with 435 rows, 411 columns and 1496 nonzeros Presolve removed 0 rows and 18 columns Presolve time: 0.00s Presolved: 435 rows, 393 columns, 1478 nonzeros Variable types: 0 continuous, 393 integer (392 binary) Found heuristic solution: objective 73.0000000 Root relaxation: objective 0.000000e+00, 248 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 0 164 73.00000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s 0 0 0.36293 0 165 48.00000 0.36293 99.2% - 0s H 0 0 47.0000000 0.36293 99.2% - 0s 0 0 1.00000 0 167 47.00000 1.00000 97.9% - 0s H 0 0 43.0000000 1.00000 97.7% - 0s H 0 0 35.0000000 1.00000 97.1% - 0s 0 0 1.00000 0 167 35.00000 1.00000 97.1% - 0s 0 0 1.00000 0 167 35.00000 1.00000 97.1% - 0s H 0 0 34.0000000 1.00000 97.1% - 0s H 0 0 27.0000000 1.00000 96.3% - 0s 0 2 1.00000 0 166 27.00000 1.00000 96.3% - 0s H 27 27 26.0000000 1.67300 93.6% 41.3 0s * 39 32 23 14.0000000 1.67300 88.0% 33.4 0s * 88 33 8 12.0000000 4.24528 64.6% 35.1 0s Cutting planes: Gomory: 4 Explored 216 nodes (7537 simplex iterations) in 0.33 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%