Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:08:01 2012 Optimize a model with 7648 rows, 1056 columns and 23872 nonzeros Presolve time: 0.06s Presolved: 7648 rows, 1056 columns, 29893 nonzeros Variable types: 0 continuous, 1056 integer (1056 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 2.000000e+00, 390 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 64 19.00000 2.00000 89.5% - 0s H 0 0 13.0000000 2.00000 84.6% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 64 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 64 9.00000 2.00000 77.8% - 1s 0 0 2.00000 0 64 9.00000 2.00000 77.8% - 1s H 0 0 8.0000000 2.00000 75.0% - 1s 0 0 2.00000 0 64 8.00000 2.00000 75.0% - 2s 0 0 2.00000 0 64 8.00000 2.00000 75.0% - 3s 0 0 2.00000 0 64 8.00000 2.00000 75.0% - 3s 0 2 2.00000 0 64 8.00000 2.00000 75.0% - 5s H 27 23 7.0000000 3.00000 57.1% 849 8s 37 25 5.00000 5 176 7.00000 3.00000 57.1% 972 10s 54 30 cutoff 7 7.00000 4.00000 42.9% 1113 15s 117 56 4.50000 5 88 7.00000 4.00000 42.9% 784 20s 230 82 6.00000 9 54 7.00000 4.50000 35.7% 562 25s 420 90 infeasible 8 7.00000 5.00000 28.6% 388 30s 631 110 cutoff 13 7.00000 5.00000 28.6% 320 35s Explored 702 nodes (231163 simplex iterations) in 38.14 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%