Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:38:23 2012 Optimize a model with 345 rows, 251 columns and 1111 nonzeros Presolve time: 0.00s Presolved: 345 rows, 251 columns, 1111 nonzeros Variable types: 0 continuous, 251 integer (251 binary) Found heuristic solution: objective 73.0000000 Root relaxation: objective 0.000000e+00, 130 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 79 73.00000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s 0 0 0.67308 0 83 68.00000 0.67308 99.0% - 0s H 0 0 63.0000000 0.67308 98.9% - 0s 0 0 0.70517 0 84 63.00000 0.70517 98.9% - 0s H 0 0 61.0000000 0.70517 98.8% - 0s 0 0 0.71795 0 83 61.00000 0.71795 98.8% - 0s 0 0 0.72300 0 84 61.00000 0.72300 98.8% - 0s 0 0 0.72300 0 84 61.00000 0.72300 98.8% - 0s H 0 0 58.0000000 0.72300 98.8% - 0s H 0 0 57.0000000 0.72300 98.7% - 0s 0 2 0.75441 0 84 57.00000 0.75441 98.7% - 0s H 27 27 51.0000000 3.04579 94.0% 30.7 0s * 37 37 22 39.0000000 3.04579 92.2% 27.1 0s * 265 207 21 38.0000000 8.39249 77.9% 25.4 0s * 637 334 28 36.0000000 12.65601 64.8% 23.4 0s * 673 325 31 35.0000000 12.65601 63.8% 23.4 0s * 698 314 25 34.0000000 12.65601 62.8% 24.0 0s * 796 316 30 33.0000000 12.65601 61.6% 25.3 1s * 887 251 23 31.0000000 12.65601 59.2% 25.1 1s * 1106 190 22 30.0000000 16.60000 44.7% 25.3 1s * 1301 95 22 29.0000000 20.61538 28.9% 25.6 1s Explored 1582 nodes (39945 simplex iterations) in 1.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%