Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:02:55 2012 Optimize a model with 601 rows, 540 columns and 2040 nonzeros Presolve removed 0 rows and 14 columns Presolve time: 0.00s Presolved: 601 rows, 526 columns, 2026 nonzeros Variable types: 0 continuous, 526 integer (525 binary) Found heuristic solution: objective 115.0000000 Root relaxation: objective 0.000000e+00, 311 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 0 225 115.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.46667 0 226 76.00000 0.46667 99.4% - 0s H 0 0 61.0000000 0.46667 99.2% - 0s 0 0 0.85270 0 227 61.00000 0.85270 98.6% - 0s 0 0 0.91920 0 228 61.00000 0.91920 98.5% - 0s H 0 0 57.0000000 0.91920 98.4% - 0s 0 0 0.91920 0 228 57.00000 0.91920 98.4% - 0s H 0 0 52.0000000 0.91920 98.2% - 0s 0 2 0.92464 0 228 52.00000 0.92464 98.2% - 0s H 27 27 46.0000000 2.26228 95.1% 47.8 0s H 54 54 30.0000000 2.26228 92.5% 34.2 0s * 66 48 38 28.0000000 2.26228 91.9% 31.7 0s * 302 198 24 27.0000000 8.36667 69.0% 38.8 0s H 328 193 26.0000000 8.36667 67.8% 36.1 0s * 414 170 21 24.0000000 8.85714 63.1% 35.1 1s H 2090 557 23.0000000 14.59184 36.6% 29.4 3s 2956 641 cutoff 28 23.00000 16.13514 29.8% 27.4 5s 6844 633 21.35088 24 206 23.00000 19.00000 17.4% 24.8 10s Explored 9159 nodes (221089 simplex iterations) in 12.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%