Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:50:10 2012 Optimize a model with 379 rows, 251 columns and 1196 nonzeros Presolve time: 0.00s Presolved: 379 rows, 251 columns, 1196 nonzeros Variable types: 0 continuous, 251 integer (251 binary) Found heuristic solution: objective 80.0000000 Root relaxation: objective 0.000000e+00, 95 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 62 80.00000 0.00000 100% - 0s H 0 0 79.0000000 0.00000 100% - 0s 0 0 0.65517 0 64 79.00000 0.65517 99.2% - 0s H 0 0 74.0000000 0.65517 99.1% - 0s 0 0 0.93103 0 64 74.00000 0.93103 98.7% - 0s H 0 0 72.0000000 0.93103 98.7% - 0s 0 0 0.95402 0 67 72.00000 0.95402 98.7% - 0s 0 0 0.96552 0 64 72.00000 0.96552 98.7% - 0s 0 0 1.01724 0 64 72.00000 1.01724 98.6% - 0s 0 0 1.01724 0 64 72.00000 1.01724 98.6% - 0s 0 0 1.01724 0 64 72.00000 1.01724 98.6% - 0s 0 0 1.01724 0 64 72.00000 1.01724 98.6% - 0s 0 2 1.01724 0 64 72.00000 1.01724 98.6% - 0s H 44 44 67.0000000 4.22414 93.7% 29.5 0s H 44 44 66.0000000 4.22414 93.6% 29.5 0s * 52 44 34 65.0000000 4.22414 93.5% 25.9 0s * 82 56 17 51.0000000 4.23878 91.7% 28.9 0s * 85 53 16 50.0000000 4.23878 91.5% 28.0 0s * 157 104 17 48.0000000 8.90948 81.4% 28.0 0s H 162 96 45.0000000 11.57078 74.3% 27.6 0s * 377 171 14 44.0000000 16.20690 63.2% 24.9 0s Cutting planes: Gomory: 1 Zero half: 3 Explored 5071 nodes (101842 simplex iterations) in 4.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%