Build (method = -2) #dp: 2065 Step-3' Graph: 74 vertices and 240 arcs (0.01s) Step-4' Graph: 22 vertices and 136 arcs (0.01s) #V4/#V3 = 0.30 #A4/#A3 = 0.57 Ready! (0.01s) Optimize a model with 85 rows, 137 columns and 372 nonzeros Presolve removed 50 rows and 56 columns Presolve time: 0.00s Presolved: 35 rows, 81 columns, 202 nonzeros Variable types: 0 continuous, 81 integer (14 binary) Found heuristic solution: objective 78.0000000 Found heuristic solution: objective 59.0000000 Optimize a model with 35 rows, 81 columns and 202 nonzeros Presolved: 35 rows, 81 columns, 202 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.700e+01 Factor NZ : 3.580e+02 Factor Ops : 4.574e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.14252621e+03 -1.02936484e+03 8.13e+01 2.22e-16 3.68e+01 0s 1 2.68015886e+02 -2.93660280e+02 1.03e+01 1.33e-15 5.40e+00 0s 2 8.02525468e+01 -1.07961424e+01 1.06e-01 1.07e-14 5.26e-01 0s 3 6.02894089e+01 3.24578045e+01 5.34e-04 2.22e-15 1.57e-01 0s 4 5.18787735e+01 4.75846427e+01 7.41e-05 1.11e-15 2.43e-02 0s 5 5.05999563e+01 5.02453423e+01 1.17e-05 8.88e-16 2.00e-03 0s 6 5.05030264e+01 5.04973562e+01 1.00e-07 1.33e-15 3.20e-05 0s 7 5.05000000e+01 5.05000000e+01 3.62e-12 6.66e-16 1.72e-10 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 5.05000000e+01 Root relaxation: objective 5.050000e+01, 29 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 50.50000 0 2 59.00000 50.50000 14.4% - 0s H 0 0 51.0000000 50.50000 0.98% - 0s Explored 0 nodes (29 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.100000000000e+01, best bound 5.100000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 51 Solution: 1 x [10, 63] 4 x [11, 62] 1 x [14, 61] 1 x [12, 60] 2 x [9, 60] 1 x [15, 59] 2 x [5, 58] 1 x [17, 57] 2 x [1, 56] 1 x [18, 55] 1 x [16, 54] 2 x [8, 54] 1 x [7, 53] 1 x [52] 1 x [6, 52] 1 x [20, 51] 1 x [4, 51] 1 x [3, 50] 1 x [19, 49] 2 x [13, 49] 1 x [2, 49] 1 x [22, 48] 2 x [24, 47] 2 x [25, 46] 1 x [26, 45] 1 x [27, 44] 1 x [30, 43] 1 x [29, 42] 3 x [21, 41] 1 x [32, 40] 1 x [27, 39] 2 x [31, 38] 1 x [26, 37] 1 x [23, 36] 1 x [23, 35] 1 x [34] 2 x [28, 33]