Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:39:22 2012 Optimize a model with 10439 rows, 5256 columns and 36214 nonzeros Presolve removed 1589 rows and 218 columns Presolve time: 0.42s Presolved: 8850 rows, 5038 columns, 32080 nonzeros Variable types: 0 continuous, 5038 integer (5038 binary) Found heuristic solution: objective 72.0000000 Root relaxation: objective 3.000000e+00, 8307 iterations, 1.24 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 768 72.00000 3.00000 95.8% - 4s H 0 0 43.0000000 3.00000 93.0% - 4s H 0 0 4.0000000 3.00000 25.0% - 4s 0 0 3.00000 0 154 4.00000 3.00000 25.0% - 7s 0 0 3.00000 0 170 4.00000 3.00000 25.0% - 7s 0 0 3.00000 0 117 4.00000 3.00000 25.0% - 12s 0 0 3.00000 0 118 4.00000 3.00000 25.0% - 15s 0 0 3.00000 0 134 4.00000 3.00000 25.0% - 19s 0 0 3.00000 0 112 4.00000 3.00000 25.0% - 22s 0 2 3.00000 0 112 4.00000 3.00000 25.0% - 25s 4 4 3.00000 1 1017 4.00000 3.00000 25.0% 1986 37s 5 5 3.00000 1 83 4.00000 3.00000 25.0% 1589 44s 6 6 3.00000 1 72 4.00000 3.00000 25.0% 1324 48s 7 6 3.00000 1 98 4.00000 3.00000 25.0% 1135 54s 8 7 3.00000 1 72 4.00000 3.00000 25.0% 993 55s 10 8 3.00000 1 113 4.00000 3.00000 25.0% 795 73s 11 9 3.00000 1 113 4.00000 3.00000 25.0% 722 75s 13 12 3.00000 11 96 4.00000 3.00000 25.0% 11326 86s 14 13 3.00000 11 84 4.00000 3.00000 25.0% 10579 90s 16 12 infeasible 12 4.00000 3.00000 25.0% 9384 95s 18 14 3.00000 13 105 4.00000 3.00000 25.0% 8579 104s 20 13 3.00000 14 103 4.00000 3.00000 25.0% 7760 105s 21 14 3.00000 14 1205 4.00000 3.00000 25.0% 7479 146s 34 8 3.00000 14 1425 4.00000 3.00000 25.0% 4964 187s 43 5 3.00000 14 80 4.00000 3.00000 25.0% 4176 190s Cutting planes: Gomory: 5 Zero half: 8 Explored 49 nodes (276341 simplex iterations) in 193.76 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%