Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:39:55 2012 Optimize a model with 419 rows, 303 columns and 1348 nonzeros Presolve time: 0.00s Presolved: 419 rows, 303 columns, 1348 nonzeros Variable types: 0 continuous, 303 integer (303 binary) Found heuristic solution: objective 96.0000000 Root relaxation: objective 0.000000e+00, 137 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 93 96.00000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s 0 0 0.50562 0 94 82.00000 0.50562 99.4% - 0s H 0 0 80.0000000 0.50562 99.4% - 0s 0 0 1.14734 0 101 80.00000 1.14734 98.6% - 0s H 0 0 77.0000000 1.14734 98.5% - 0s 0 0 1.25050 0 102 77.00000 1.25050 98.4% - 0s H 0 0 73.0000000 1.25050 98.3% - 0s H 0 0 69.0000000 1.25050 98.2% - 0s 0 0 1.27316 0 102 69.00000 1.27316 98.2% - 0s H 0 0 68.0000000 1.27316 98.1% - 0s 0 0 1.29827 0 99 68.00000 1.29827 98.1% - 0s H 0 0 67.0000000 1.29827 98.1% - 0s 0 0 1.30856 0 99 67.00000 1.30856 98.0% - 0s 0 0 1.30856 0 99 67.00000 1.30856 98.0% - 0s H 0 0 66.0000000 1.30856 98.0% - 0s H 0 0 62.0000000 1.30856 97.9% - 0s 0 2 1.34435 0 99 62.00000 1.34435 97.8% - 0s * 47 45 26 48.0000000 4.79732 90.0% 28.9 0s H 108 80 44.0000000 7.46591 83.0% 29.0 0s * 221 160 19 43.0000000 9.02421 79.0% 28.6 0s * 306 194 27 40.0000000 10.82750 72.9% 26.4 0s * 460 226 14 37.0000000 14.50789 60.8% 25.5 0s 4355 620 cutoff 27 37.00000 26.33333 28.8% 22.2 5s 10671 302 cutoff 26 37.00000 31.26027 15.5% 20.3 10s Explored 11679 nodes (234110 simplex iterations) in 10.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%