Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:02:37 2012 Optimize a model with 319 rows, 185 columns and 980 nonzeros Presolve time: 0.00s Presolved: 319 rows, 185 columns, 980 nonzeros Variable types: 0 continuous, 185 integer (185 binary) Found heuristic solution: objective 78.0000000 Root relaxation: objective 0.000000e+00, 48 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 26 78.00000 0.00000 100% - 0s 0 0 1.01111 0 37 78.00000 1.01111 98.7% - 0s 0 0 1.10000 0 28 78.00000 1.10000 98.6% - 0s 0 0 1.15000 0 28 78.00000 1.15000 98.5% - 0s 0 0 1.15000 0 28 78.00000 1.15000 98.5% - 0s 0 0 1.15000 0 28 78.00000 1.15000 98.5% - 0s 0 0 1.15000 0 28 78.00000 1.15000 98.5% - 0s H 0 0 77.0000000 1.15000 98.5% - 0s 0 2 1.52143 0 28 77.00000 1.52143 98.0% - 0s * 32 29 19 76.0000000 9.56667 87.4% 33.6 0s * 76 48 19 75.0000000 9.62727 87.2% 26.4 0s * 109 66 20 72.0000000 15.26374 78.8% 25.8 0s * 244 144 21 71.0000000 21.13000 70.2% 24.5 0s * 263 138 17 66.0000000 21.27273 67.8% 24.1 0s * 308 147 15 65.0000000 22.60000 65.2% 23.3 0s H 2716 497 64.0000000 39.31250 38.6% 22.3 1s H 2836 484 63.0000000 39.75000 36.9% 22.1 1s * 3026 508 30 61.0000000 41.14286 32.6% 22.0 2s 8666 411 58.84615 26 90 61.00000 50.25000 17.6% 18.7 5s Cutting planes: Gomory: 1 Zero half: 3 Explored 10782 nodes (194353 simplex iterations) in 5.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.100000000000e+01, best bound 6.100000000000e+01, gap 0.0%