Build (method = -2) #dp: 2094 Step-3' Graph: 499 vertices and 1490 arcs (0.01s) Step-4' Graph: 181 vertices and 854 arcs (0.02s) #V4/#V3 = 0.36 #A4/#A3 = 0.57 Ready! (0.02s) Optimize a model with 220 rows, 855 columns and 2207 nonzeros Presolve removed 46 rows and 73 columns Presolve time: 0.01s Presolved: 174 rows, 782 columns, 2121 nonzeros Variable types: 0 continuous, 782 integer (25 binary) Found heuristic solution: objective 291.0000000 Found heuristic solution: objective 284.0000000 Found heuristic solution: objective 264.0000000 Optimize a model with 174 rows, 782 columns and 2121 nonzeros Presolved: 174 rows, 782 columns, 2121 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.335e+03 Factor NZ : 4.419e+03 Factor Ops : 1.415e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.64842643e+03 -1.61625751e+04 3.53e+04 7.13e-02 1.42e+02 0s 1 1.06832344e+03 -8.66556561e+03 5.00e+03 7.77e-16 2.28e+01 0s 2 4.41661097e+02 -3.30263491e+03 6.19e+02 9.99e-16 4.07e+00 0s 3 3.16735925e+02 -6.72512408e+02 5.45e+01 2.00e-15 7.23e-01 0s 4 2.73166083e+02 -3.11209478e+02 8.96e+00 1.33e-15 3.81e-01 0s 5 2.40166429e+02 -7.68592742e+01 3.18e+00 6.52e-16 2.04e-01 0s 6 2.21072708e+02 5.87842524e+00 1.13e+00 7.70e-16 1.37e-01 0s 7 2.04994748e+02 1.31854603e+02 4.11e-01 5.51e-16 4.65e-02 0s 8 1.91952701e+02 1.77283433e+02 3.06e-02 4.89e-16 9.29e-03 0s 9 1.91006244e+02 1.90966597e+02 6.83e-14 5.03e-16 2.50e-05 0s 10 1.91000006e+02 1.90999967e+02 2.56e-13 4.77e-16 2.50e-08 0s 11 1.91000000e+02 1.91000000e+02 9.29e-12 4.28e-16 2.51e-14 0s Barrier solved model in 11 iterations and 0.01 seconds Optimal objective 1.91000000e+02 Root relaxation: objective 1.910000e+02, 365 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 191.0000000 191.00000 0.0% - 0s Explored 0 nodes (365 simplex iterations) in 0.03 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.910000000000e+02, best bound 1.910000000000e+02, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.03 seconds Total run time: 0.06 seconds Objective: 191 Solution: 5 x [1, 31] 2 x [1, 33] 11 x [2, 33] 1 x [3, 30] 12 x [3, 32] 3 x [4, 29] 5 x [4, 38] 2 x [4, 39] 2 x [5] 3 x [6, 26] 6 x [6, 36] 2 x [7, 25] 5 x [7, 26] 6 x [7, 27] 5 x [8, 23] 6 x [8, 28] 2 x [8, 39] 1 x [9, 33] 13 x [9, 37] 2 x [9, 39] 6 x [10, 34] 2 x [10, 39] 1 x [11, 26] 2 x [11, 39] 7 x [12, 22] 4 x [12, 26] 1 x [12, 26, 38] 3 x [13, 31] 2 x [13, 39] 11 x [14, 21] 7 x [14, 31] 5 x [15, 27] 9 x [15, 28, 36] 2 x [15, 39] 3 x [16, 19] 5 x [16, 30, 34] 2 x [17, 34] 4 x [18, 20] 7 x [18, 24] 1 x [18, 26, 39] 5 x [18, 30] 1 x [18, 30, 35, 39] 2 x [18, 30, 37] 2 x [18, 36] 3 x [18, 39]