Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:18:30 2012 Optimize a model with 11008 rows, 16512 columns and 49024 nonzeros Presolve removed 28 rows and 3584 columns Presolve time: 0.22s Presolved: 10980 rows, 12928 columns, 45440 nonzeros Variable types: 0 continuous, 12928 integer (12928 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 2.000000e+00, 13202 iterations, 1.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 110 46.00000 2.00000 95.7% - 4s H 0 0 5.0000000 2.00000 60.0% - 4s H 0 0 3.0000000 2.00000 33.3% - 4s 0 0 2.00000 0 329 3.00000 2.00000 33.3% - 7s 0 0 2.00000 0 258 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 211 3.00000 2.00000 33.3% - 22s 0 0 2.00000 0 213 3.00000 2.00000 33.3% - 30s 0 0 2.00000 0 259 3.00000 2.00000 33.3% - 35s 0 0 2.00000 0 215 3.00000 2.00000 33.3% - 43s 0 0 2.00000 0 110 3.00000 2.00000 33.3% - 45s 0 0 2.00000 0 215 3.00000 2.00000 33.3% - 53s 0 0 2.00000 0 258 3.00000 2.00000 33.3% - 61s 0 0 2.00000 0 258 3.00000 2.00000 33.3% - 66s 0 2 2.00000 0 258 3.00000 2.00000 33.3% - 74s 2 3 2.00000 1 258 3.00000 2.00000 33.3% 8763 76s 4 4 2.00000 1 110 3.00000 2.00000 33.3% 4382 80s 5 5 2.00000 1 209 3.00000 2.00000 33.3% 3505 93s 6 6 2.00000 1 110 3.00000 2.00000 33.3% 2921 100s 8 7 2.00000 1 110 3.00000 2.00000 33.3% 2191 113s 9 8 2.00000 1 110 3.00000 2.00000 33.3% 1947 123s Cutting planes: Gomory: 3 Zero half: 2 Explored 9 nodes (491563 simplex iterations) in 124.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%