Build (method = -2) #dp: 4145 Step-3' Graph: 552 vertices and 1649 arcs (0.04s) Step-4' Graph: 321 vertices and 1187 arcs (0.04s) #V4/#V3 = 0.58 #A4/#A3 = 0.72 Ready! (0.04s) Optimize a model with 361 rows, 1188 columns and 2926 nonzeros Presolve removed 28 rows and 39 columns Presolve time: 0.01s Presolved: 333 rows, 1149 columns, 2866 nonzeros Variable types: 0 continuous, 1149 integer (0 binary) Found heuristic solution: objective 1940.0000000 Found heuristic solution: objective 1881.0000000 Optimize a model with 333 rows, 1149 columns and 2866 nonzeros Presolved: 333 rows, 1149 columns, 2866 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.112e+03 Factor NZ : 1.042e+04 Factor Ops : 4.898e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.00957699e+04 -2.61195190e+05 2.50e+05 2.22e-16 6.37e+02 0s 1 6.72958103e+03 -1.22737089e+05 3.91e+04 5.55e-16 1.23e+02 0s 2 3.47870630e+03 -3.16223203e+04 8.71e+03 2.89e-15 2.67e+01 0s 3 2.22474003e+03 -5.29478886e+03 6.29e+02 2.89e-15 3.80e+00 0s 4 1.96534205e+03 -2.26293654e+03 1.16e+02 1.22e-15 1.89e+00 0s 5 1.77703220e+03 -9.93338419e+02 6.69e+01 1.11e-15 1.22e+00 0s 6 1.58091345e+03 -6.60997733e+02 4.52e+01 8.88e-16 9.84e-01 0s 7 1.38765781e+03 3.17064267e+02 2.42e+01 2.99e-16 4.67e-01 0s 8 1.33866948e+03 5.65633152e+02 1.97e+01 3.48e-16 3.37e-01 0s 9 1.21122415e+03 6.95394785e+02 5.39e+00 4.44e-16 2.23e-01 0s 10 1.12718933e+03 9.02143737e+02 2.07e+00 2.88e-16 9.71e-02 0s 11 1.08614717e+03 9.68946458e+02 6.24e-01 2.76e-16 5.05e-02 0s 12 1.07207198e+03 1.01714922e+03 3.30e-01 3.13e-16 2.37e-02 0s 13 1.06313456e+03 1.04026476e+03 8.03e-02 3.33e-16 9.85e-03 0s 14 1.05860834e+03 1.04945976e+03 1.86e-02 2.75e-16 3.94e-03 0s 15 1.05675559e+03 1.05579148e+03 1.38e-03 3.84e-16 4.15e-04 0s 16 1.05653022e+03 1.05652772e+03 1.22e-06 6.66e-16 1.07e-06 0s 17 1.05652941e+03 1.05652941e+03 2.60e-12 3.48e-16 1.07e-09 0s Barrier solved model in 17 iterations and 0.03 seconds Optimal objective 1.05652941e+03 Root relaxation: objective 1.056529e+03, 309 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1056.52941 0 61 1881.00000 1056.52941 43.8% - 0s H 0 0 1067.0000000 1056.52941 0.98% - 0s H 0 0 1059.0000000 1056.52941 0.23% - 0s H 0 0 1057.0000000 1056.52941 0.04% - 0s Explored 0 nodes (805 simplex iterations) in 0.13 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.057000000000e+03, best bound 1.057000000000e+03, gap 0.0% Preprocessing time: 0.06 seconds Gurobi run time: 0.13 seconds Total run time: 0.19 seconds Objective: 1057 Solution: 48 x [35] 27 x [14, 23] 3 x [21, 23] 1 x [38] 90 x [1, 38] 4 x [12, 38] 85 x [12, 32] 4 x [3, 29, 32] 16 x [4, 17] 37 x [4, 39] 16 x [4, 11] 9 x [10, 11, 24] 19 x [3, 10, 11, 20] 13 x [3, 10, 11, 26] 77 x [9, 18] 1 x [2, 10, 15, 29] 75 x [2, 13, 37] 22 x [7, 16, 29] 59 x [16, 19, 33] 1 x [13, 16, 18] 1 x [3, 16, 36] 1 x [3, 7, 28] 66 x [7, 25, 28] 3 x [5, 10, 13, 28] 1 x [8, 10, 13, 27] 67 x [8, 20, 26, 27] 68 x [5, 24, 31] 12 x [6, 31, 34] 11 x [7, 8, 24] 4 x [8, 24, 40] 86 x [34, 36, 40] 1 x [10, 13, 23, 37, 40] 2 x [5, 12, 19] 9 x [5, 12, 19, 26] 1 x [5, 10, 13, 19, 23] 30 x [3, 22, 23, 30] 4 x [10, 13, 22, 23, 30] 45 x [6, 10, 15, 22, 29] 29 x [6, 15, 30, 33] 1 x [6, 10, 15, 29, 30] 7 x [4, 13, 15, 30] 1 x [10, 13, 15, 30, 37]