Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:19:32 2012 Optimize a model with 439 rows, 308 columns and 1403 nonzeros Presolve time: 0.00s Presolved: 439 rows, 308 columns, 1403 nonzeros Variable types: 0 continuous, 308 integer (308 binary) Found heuristic solution: objective 103.0000000 Root relaxation: objective 0.000000e+00, 132 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 88 103.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s 0 0 0.50000 0 89 84.00000 0.50000 99.4% - 0s H 0 0 80.0000000 0.50000 99.4% - 0s 0 0 1.17635 0 91 80.00000 1.17635 98.5% - 0s H 0 0 77.0000000 1.17635 98.5% - 0s 0 0 1.30103 0 92 77.00000 1.30103 98.3% - 0s H 0 0 71.0000000 1.30103 98.2% - 0s 0 0 1.30245 0 96 71.00000 1.30245 98.2% - 0s 0 0 1.30245 0 96 71.00000 1.30245 98.2% - 0s H 0 0 70.0000000 1.30245 98.1% - 0s 0 2 1.30253 0 96 70.00000 1.30253 98.1% - 0s * 44 41 28 51.0000000 2.30141 95.5% 36.2 0s * 303 242 22 48.0000000 7.31265 84.8% 34.2 0s * 305 224 23 45.0000000 7.31265 83.7% 34.0 0s * 1545 495 26 44.0000000 19.08696 56.6% 31.6 2s H 2220 549 43.0000000 22.97436 46.6% 30.4 3s H 2274 528 41.0000000 23.04545 43.8% 30.2 3s 3822 619 34.33333 19 140 41.00000 27.00000 34.1% 27.8 5s 9100 402 35.92000 19 145 41.00000 33.05556 19.4% 24.9 10s Explored 10853 nodes (260494 simplex iterations) in 11.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.100000000000e+01, best bound 4.100000000000e+01, gap 0.0%