Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:52:48 2012 Optimize a model with 682 rows, 117 columns and 1364 nonzeros Presolve removed 261 rows and 0 columns Presolve time: 0.00s Presolved: 421 rows, 117 columns, 1059 nonzeros Variable types: 0 continuous, 117 integer (117 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 4.097210e+01, 300 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.97210 0 115 28.00000 40.97210 46.3% - 0s H 0 0 30.0000000 40.97210 36.6% - 0s 0 0 40.66401 0 115 30.00000 40.66401 35.5% - 0s 0 0 40.34628 0 112 30.00000 40.34628 34.5% - 0s 0 0 40.17975 0 114 30.00000 40.17975 33.9% - 0s 0 0 40.06359 0 116 30.00000 40.06359 33.5% - 0s 0 0 39.92595 0 115 30.00000 39.92595 33.1% - 0s 0 0 39.80183 0 114 30.00000 39.80183 32.7% - 0s 0 0 39.65459 0 115 30.00000 39.65459 32.2% - 0s 0 0 39.54620 0 115 30.00000 39.54620 31.8% - 0s 0 0 39.45139 0 115 30.00000 39.45139 31.5% - 0s H 0 0 31.0000000 39.45139 27.3% - 0s 0 0 39.36307 0 115 31.00000 39.36307 27.0% - 0s 0 0 39.29221 0 114 31.00000 39.29221 26.7% - 0s 0 0 39.24517 0 115 31.00000 39.24517 26.6% - 0s 0 0 39.20514 0 114 31.00000 39.20514 26.5% - 0s 0 0 39.15902 0 115 31.00000 39.15902 26.3% - 0s 0 0 39.11793 0 117 31.00000 39.11793 26.2% - 0s 0 0 39.11536 0 117 31.00000 39.11536 26.2% - 0s 0 0 39.11536 0 117 31.00000 39.11536 26.2% - 0s 0 2 39.11348 0 117 31.00000 39.11348 26.2% - 0s H 7 7 34.0000000 39.10003 15.0% 69.3 0s Cutting planes: Clique: 1 Zero half: 46 Explored 322 nodes (12786 simplex iterations) in 0.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%