Gurobi 5.0.1 (linux64) logging started Fri Nov 16 11:18:33 2012 Optimize a model with 16450 rows, 4970 columns and 54040 nonzeros Presolve time: 0.12s Presolved: 16450 rows, 4970 columns, 54143 nonzeros Variable types: 0 continuous, 4970 integer (4970 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 2.000000e+00, 5198 iterations, 0.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 140 45.00000 2.00000 95.6% - 1s H 0 0 14.0000000 2.00000 85.7% - 1s H 0 0 5.0000000 2.00000 60.0% - 2s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 4s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 12s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 21s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 30s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 40s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 48s 0 2 2.00000 0 140 5.00000 2.00000 60.0% - 78s 1 3 2.60000 1 329 5.00000 2.00000 60.0% 49614 93s 2 4 2.50000 1 733 5.00000 2.50000 50.0% 41454 107s 4 4 2.70588 2 303 5.00000 2.50000 50.0% 26328 114s 7 7 3.20000 5 427 5.00000 2.50000 50.0% 15910 115s 33 17 3.00000 3 130 5.00000 2.50000 50.0% 3836 120s 54 37 4.00000 21 108 5.00000 2.50000 50.0% 2614 125s * 62 8 29 4.0000000 2.50000 37.5% 2282 125s Cutting planes: Clique: 146 Explored 103 nodes (258652 simplex iterations) in 127.11 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%