Build (method = -2) #dp: 2165 Step-3' Graph: 55 vertices and 535 arcs (0.01s) Step-4' Graph: 55 vertices and 535 arcs (0.01s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 126 rows, 536 columns and 1505 nonzeros Presolve removed 43 rows and 51 columns Presolve time: 0.00s Presolved: 83 rows, 485 columns, 1363 nonzeros Variable types: 0 continuous, 485 integer (0 binary) Found heuristic solution: objective 482.0000000 Found heuristic solution: objective 293.0000000 Optimize a model with 83 rows, 485 columns and 1363 nonzeros Presolved: 83 rows, 485 columns, 1363 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.640e+02 Factor NZ : 1.683e+03 Factor Ops : 4.208e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.97341095e+03 -7.53464902e+03 2.83e+04 2.22e-16 6.57e+01 0s 1 1.13987084e+03 -2.86485078e+03 3.56e+03 5.55e-16 1.01e+01 0s 2 4.74640895e+02 -5.62640992e+02 9.31e+01 2.66e-15 1.14e+00 0s 3 3.92490680e+02 -6.48843746e+01 5.38e+00 8.88e-16 4.61e-01 0s 4 3.24981028e+02 1.08747434e+02 1.13e-02 5.55e-16 2.16e-01 0s 5 2.99262265e+02 2.56566911e+02 1.77e-03 3.33e-16 4.27e-02 0s 6 2.88457097e+02 2.81141663e+02 2.75e-04 3.33e-16 7.31e-03 0s 7 2.87078595e+02 2.86906054e+02 1.85e-05 4.44e-16 1.72e-04 0s 8 2.87000083e+02 2.86999906e+02 9.56e-13 3.52e-16 1.76e-07 0s 9 2.87000000e+02 2.87000000e+02 1.63e-11 3.42e-16 1.77e-13 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.87000000e+02 Root relaxation: objective 2.870000e+02, 82 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 287.0000000 287.00000 0.0% - 0s Explored 0 nodes (82 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.870000000000e+02, best bound 2.870000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.02 seconds Total run time: 0.03 seconds Objective: 287 Solution: 7 x [71] 5 x [70] 4 x [69] 2 x [68] 8 x [67] 7 x [66] 9 x [65] 5 x [64] 6 x [63] 16 x [62] 6 x [1, 61] 3 x [2, 60] 3 x [1, 60] 2 x [3, 59] 8 x [2, 59] 5 x [4, 58] 3 x [3, 58] 2 x [57] 1 x [5, 57] 6 x [5, 56] 3 x [7, 55] 7 x [7, 54] 11 x [8, 53] 1 x [10, 52] 7 x [9, 52] 4 x [10, 51] 6 x [12, 50] 1 x [10, 50] 7 x [13, 49] 1 x [6, 49] 8 x [11, 48] 3 x [6, 48] 5 x [15, 47] 6 x [14, 46] 8 x [16, 45] 9 x [17, 44] 4 x [18, 43] 1 x [17, 43] 1 x [16, 43] 1 x [14, 43] 1 x [20, 42] 8 x [19, 42] 5 x [21, 41] 4 x [20, 41] 7 x [22, 40] 1 x [20, 40] 6 x [23, 39] 8 x [24, 38] 1 x [23, 38] 3 x [25, 37] 6 x [26, 36] 6 x [27, 35] 3 x [26, 35] 3 x [34] 6 x [28, 34] 2 x [25, 34] 7 x [29, 33] 3 x [30, 32] 4 x [30, 31] 1 x [30, 30]