Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:47:46 2012 Optimize a model with 591 rows, 527 columns and 2002 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 591 rows, 507 columns, 1982 nonzeros Variable types: 0 continuous, 507 integer (506 binary) Found heuristic solution: objective 109.0000000 Root relaxation: objective 0.000000e+00, 305 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 204 109.00000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s 0 0 0.41895 0 205 80.00000 0.41895 99.5% - 0s H 0 0 74.0000000 0.41895 99.4% - 0s 0 0 1.00000 0 207 74.00000 1.00000 98.6% - 0s H 0 0 71.0000000 1.00000 98.6% - 0s 0 0 1.00000 0 207 71.00000 1.00000 98.6% - 0s 0 0 1.00000 0 206 71.00000 1.00000 98.6% - 0s H 0 0 69.0000000 1.00000 98.6% - 0s H 0 0 67.0000000 1.00000 98.5% - 0s 0 2 1.00000 0 206 67.00000 1.00000 98.5% - 0s H 27 27 58.0000000 1.00000 98.3% 58.7 0s H 54 54 43.0000000 1.00000 97.7% 42.7 0s * 67 65 37 30.0000000 1.00000 96.7% 36.9 0s * 199 140 24 28.0000000 4.06087 85.5% 38.1 0s * 1526 368 26 27.0000000 14.96429 44.6% 32.6 3s 2391 472 cutoff 19 27.00000 17.77778 34.2% 30.6 5s 5148 444 23.95455 20 201 27.00000 21.05455 22.0% 28.2 10s Cutting planes: Gomory: 1 Explored 7194 nodes (191731 simplex iterations) in 13.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%