Gurobi 5.0.1 (linux64) logging started Fri Nov 16 13:01:27 2012 Optimize a model with 18615 rows, 5402 columns and 60955 nonzeros Presolve time: 0.15s Presolved: 18615 rows, 5402 columns, 61045 nonzeros Variable types: 0 continuous, 5402 integer (5402 binary) Found heuristic solution: objective 44.0000000 Root relaxation: objective 2.000000e+00, 8222 iterations, 1.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 146 44.00000 2.00000 95.5% - 5s H 0 0 15.0000000 2.00000 86.7% - 5s H 0 0 5.0000000 2.00000 60.0% - 6s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 6s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 17s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 31s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 44s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 52s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 58s 0 2 2.00000 0 146 5.00000 2.00000 60.0% - 87s 1 3 3.00000 1 967 5.00000 2.00000 60.0% 50430 100s 2 4 3.00000 1 808 5.00000 3.00000 40.0% 36482 110s 7 7 3.02500 4 344 5.00000 3.00000 40.0% 12817 117s 12 10 3.14286 7 187 5.00000 3.00000 40.0% 8701 120s H 27 9 4.0000000 3.00000 25.0% 4478 126s 37 9 3.00000 6 138 4.00000 3.00000 25.0% 3525 130s 39 9 3.00000 6 136 4.00000 3.00000 25.0% 3831 135s 41 7 cutoff 7 4.00000 3.00000 25.0% 4434 142s 43 5 cutoff 5 4.00000 3.00000 25.0% 4743 149s 44 6 3.00000 6 132 4.00000 3.00000 25.0% 4696 150s 46 4 cutoff 7 4.00000 3.00000 25.0% 5214 157s 47 3 cutoff 5 4.00000 3.00000 25.0% 5452 161s 55 5 cutoff 8 4.00000 3.00000 25.0% 4902 165s 63 3 cutoff 6 4.00000 3.00000 25.0% 4673 170s Cutting planes: Clique: 162 Explored 67 nodes (438842 simplex iterations) in 171.33 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%