Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:23:30 2012 Optimize a model with 4643 rows, 756 columns and 14551 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.07s Presolved: 4668 rows, 754 columns, 19845 nonzeros Variable types: 0 continuous, 754 integer (754 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 3.578947e+00, 3411 iterations, 0.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.57895 0 723 27.00000 3.57895 86.7% - 0s 0 0 5.04473 0 644 27.00000 5.04473 81.3% - 0s H 0 0 25.0000000 5.04473 79.8% - 0s 0 0 5.17476 0 559 25.00000 5.17476 79.3% - 1s H 0 0 22.0000000 5.17476 76.5% - 1s H 0 0 21.0000000 5.17476 75.4% - 1s 0 0 5.17476 0 587 21.00000 5.17476 75.4% - 1s 0 0 5.17476 0 570 21.00000 5.17476 75.4% - 1s H 0 0 16.0000000 5.17476 67.7% - 1s H 0 0 15.0000000 5.17476 65.5% - 2s 0 2 5.32558 0 561 15.00000 5.32558 64.5% - 2s H 29 22 10.0000000 6.00000 40.0% 140 3s H 56 23 8.0000000 6.00000 25.0% 97.4 3s H 84 15 7.0000000 6.00000 14.3% 85.5 3s 234 34 6.00000 19 61 7.00000 6.00000 14.3% 66.0 5s 1009 18 6.00000 19 570 7.00000 6.00000 14.3% 58.6 10s Cutting planes: Gomory: 1 Clique: 2 Zero half: 3 Explored 1050 nodes (78325 simplex iterations) in 12.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%