Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:53:29 2012 Optimize a model with 14400 rows, 6480 columns and 49360 nonzeros Presolve removed 2001 rows and 80 columns Presolve time: 0.33s Presolved: 12399 rows, 6400 columns, 44400 nonzeros Variable types: 0 continuous, 6400 integer (6400 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 3.000000e+00, 12535 iterations, 2.73 seconds Total elapsed time = 5.86s Total elapsed time = 11.56s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 68 46.00000 3.00000 93.5% - 11s H 0 0 4.0000000 3.00000 25.0% - 11s 0 0 3.00000 0 109 4.00000 3.00000 25.0% - 12s 0 0 3.00000 0 147 4.00000 3.00000 25.0% - 19s 0 0 3.00000 0 104 4.00000 3.00000 25.0% - 21s 0 0 3.00000 0 104 4.00000 3.00000 25.0% - 22s 0 0 3.00000 0 106 4.00000 3.00000 25.0% - 22s 0 0 3.00000 0 102 4.00000 3.00000 25.0% - 27s 0 0 3.00000 0 137 4.00000 3.00000 25.0% - 33s 0 0 3.00000 0 126 4.00000 3.00000 25.0% - 39s 0 2 3.00000 0 122 4.00000 3.00000 25.0% - 47s 4 4 3.00000 1 96 4.00000 3.00000 25.0% 2043 55s 7 6 3.00000 1 50 4.00000 3.00000 25.0% 1168 62s 8 7 3.00000 1 148 4.00000 3.00000 25.0% 1022 70s 10 8 3.00000 1 126 4.00000 3.00000 25.0% 817 77s 12 10 3.00000 1 85 4.00000 3.00000 25.0% 681 82s 13 10 3.00000 1 78 4.00000 3.00000 25.0% 629 86s 14 11 3.00000 1 118 4.00000 3.00000 25.0% 584 92s 15 12 3.00000 1 103 4.00000 3.00000 25.0% 545 97s 17 13 infeasible 16 4.00000 3.00000 25.0% 15357 103s 18 14 3.00000 16 92 4.00000 3.00000 25.0% 14574 105s 24 12 3.00000 19 104 4.00000 3.00000 25.0% 11263 111s Cutting planes: Gomory: 3 Zero half: 11 Explored 27 nodes (455790 simplex iterations) in 113.49 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%