Build (method = -2) #dp: 15466 Step-3' Graph: 124 vertices and 374 arcs (0.08s) Step-4' Graph: 32 vertices and 190 arcs (0.08s) #V4/#V3 = 0.26 #A4/#A3 = 0.51 Ready! (0.08s) Optimize a model with 51 rows, 191 columns and 518 nonzeros Presolve removed 6 rows and 10 columns Presolve time: 0.00s Presolved: 45 rows, 181 columns, 498 nonzeros Variable types: 0 continuous, 181 integer (0 binary) Found heuristic solution: objective 1999.0000000 Found heuristic solution: objective 1244.0000000 Optimize a model with 45 rows, 181 columns and 498 nonzeros Presolved: 45 rows, 181 columns, 498 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.300e+02 Factor NZ : 6.170e+02 Factor Ops : 9.835e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.86960094e+04 -3.74457704e+04 1.85e+04 1.11e-16 7.76e+02 0s 1 3.84221952e+03 -1.61402991e+04 1.71e+03 4.44e-16 1.01e+02 0s 2 1.34708021e+03 -3.17677157e+03 5.34e+01 1.11e-15 1.26e+01 0s 3 7.33013494e+02 -2.53171750e+02 2.23e+00 6.11e-16 2.60e+00 0s 4 4.04171357e+02 1.07910970e+02 6.31e-01 4.58e-16 7.79e-01 0s 5 3.59940417e+02 2.51335974e+02 1.88e-01 6.25e-16 2.85e-01 0s 6 3.43405962e+02 3.26938634e+02 6.92e-02 2.22e-16 4.32e-02 0s 7 3.33411411e+02 3.32990196e+02 3.40e-13 6.66e-16 1.11e-03 0s 8 3.33333412e+02 3.33332988e+02 2.81e-13 5.77e-16 1.11e-06 0s 9 3.33333333e+02 3.33333333e+02 4.33e-13 4.44e-16 1.12e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 3.33333333e+02 Root relaxation: objective 3.333333e+02, 132 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 333.33333 0 16 1244.00000 333.33333 73.2% - 0s H 0 0 334.0000000 333.33333 0.20% - 0s Explored 0 nodes (164 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.340000000000e+02, best bound 3.340000000000e+02, gap 0.0% Preprocessing time: 0.08 seconds Gurobi run time: 0.01 seconds Total run time: 0.09 seconds Objective: 334 Solution: 132 x [1, 2, 4, 9, 12, 15] 1 x [5, 5, 10, 14] 4 x [3, 7, 8, 10, 14, 14] 56 x [8, 8, 14, 14, 15, 18] 1 x [1, 2, 5, 8, 9, 16] 25 x [3, 6, 7, 8, 11, 16] 28 x [7, 8, 9, 10, 10, 17] 3 x [3, 4, 6, 7, 8, 15] 7 x [2, 8, 9, 10, 13, 18] 4 x [1, 3, 8, 10, 10, 10] 1 x [1, 2, 3, 10, 16] 1 x [2, 3, 4, 15, 18] 59 x [1, 6, 10, 11, 18, 19] 12 x [1, 1, 3, 10, 10, 10]