Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:04:41 2012 Optimize a model with 24023 rows, 6006 columns and 77691 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.74s Presolved: 24098 rows, 6004 columns, 82996 nonzeros Variable types: 0 continuous, 6004 integer (6004 binary) Found heuristic solution: objective 77.0000000 Root relaxation: objective 2.000000e+00, 4075 iterations, 0.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 154 77.00000 2.00000 97.4% - 1s H 0 0 61.0000000 2.00000 96.7% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 3.00000 0 4289 5.00000 3.00000 40.0% - 17s 0 0 3.01351 0 4394 5.00000 3.01351 39.7% - 25s 0 0 3.01351 0 4394 5.00000 3.01351 39.7% - 28s 0 0 3.01351 0 4396 5.00000 3.01351 39.7% - 40s 0 0 3.01351 0 4386 5.00000 3.01351 39.7% - 51s 0 0 3.01351 0 4384 5.00000 3.01351 39.7% - 65s 0 0 3.01351 0 4384 5.00000 3.01351 39.7% - 79s 0 0 3.01351 0 4384 5.00000 3.01351 39.7% - 90s 0 2 4.00000 0 4384 5.00000 4.00000 20.0% - 121s 105 25 4.00000 9 134 5.00000 4.00000 20.0% 417 125s 601 36 4.00000 6 4384 5.00000 4.00000 20.0% 136 150s 603 37 4.00000 13 1828 5.00000 4.00000 20.0% 135 170s 604 38 4.00000 13 1484 5.00000 4.00000 20.0% 135 189s 605 39 4.00000 6 1047 5.00000 4.00000 20.0% 135 202s 606 39 4.00000 13 1053 5.00000 4.00000 20.0% 134 218s 607 40 4.00000 13 96 5.00000 4.00000 20.0% 134 235s 608 41 4.00000 13 151 5.00000 4.00000 20.0% 134 248s 609 41 4.00000 9 176 5.00000 4.00000 20.0% 134 263s 610 42 4.00000 11 176 5.00000 4.00000 20.0% 134 268s 611 43 4.00000 11 176 5.00000 4.00000 20.0% 133 271s 613 45 4.00000 6 4384 5.00000 4.00000 20.0% 581 288s Explored 614 nodes (576387 simplex iterations) in 300.01 seconds Thread count was 1 (of 16 available processors) Time limit reached Best objective 5.000000000000e+00, best bound 4.000000000000e+00, gap 20.0000%