Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:03:18 2012 Optimize a model with 11438 rows, 17822 columns and 51604 nonzeros Presolve removed 33 rows and 4389 columns Presolve time: 0.20s Presolved: 11405 rows, 13433 columns, 47215 nonzeros Variable types: 0 continuous, 13433 integer (13433 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 2.000000e+00, 11233 iterations, 0.54 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 88 43.00000 2.00000 95.3% - 1s H 0 0 3.0000000 2.00000 33.3% - 1s 0 0 2.00000 0 212 3.00000 2.00000 33.3% - 4s 0 0 2.00000 0 247 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 88 3.00000 2.00000 33.3% - 16s 0 0 2.00000 0 194 3.00000 2.00000 33.3% - 21s 0 0 2.00000 0 247 3.00000 2.00000 33.3% - 27s 0 0 2.00000 0 247 3.00000 2.00000 33.3% - 33s 0 0 2.00000 0 247 3.00000 2.00000 33.3% - 35s 0 2 2.00000 0 247 3.00000 2.00000 33.3% - 40s 5 5 2.00000 1 202 3.00000 2.00000 33.3% 3848 54s 6 6 2.00000 1 88 3.00000 2.00000 33.3% 3207 62s 7 6 2.00000 1 88 3.00000 2.00000 33.3% 2749 71s 8 7 2.00000 1 88 3.00000 2.00000 33.3% 2405 85s 9 8 2.00000 1 88 3.00000 2.00000 33.3% 2138 97s 11 9 infeasible 10 3.00000 2.00000 33.3% 19692 114s 12 8 infeasible 10 3.00000 3.00000 0.0% 18058 115s Cutting planes: Gomory: 16 Zero half: 13 Explored 13 nodes (393319 simplex iterations) in 115.07 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%