
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:06:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1382.48.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo1382.48.lp
Reading time = 0.14 seconds
: 86745 rows, 2547 columns, 262169 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 86745 rows, 2547 columns and 262169 nonzeros
Model fingerprint: 0x4759359a
Variable types: 46 continuous, 2501 integer (2501 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 14944 rows and 34 columns
Presolve time: 0.55s
Presolved: 71801 rows, 2513 columns, 217715 nonzeros
Variable types: 0 continuous, 2513 integer (2467 binary)
Root relaxation presolved: 2502 rows, 74303 columns, 220228 nonzeros


Root relaxation: objective 4.400000e+01, 18653 iterations, 3.59 seconds (3.30 work units)
Total elapsed time = 8.82s (DegenMoves)
Total elapsed time = 11.18s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   44.00000    0  291          -   44.00000      -     -   11s
H    0     0                      15.0000000   44.00000   193%     -   12s
H    0     0                      17.0000000   44.00000   159%     -   12s
     0     0   44.00000    0  530   17.00000   44.00000   159%     -   16s
H    0     0                      18.0000000   44.00000   144%     -   17s
     0     0   44.00000    0  512   18.00000   44.00000   144%     -   17s
H    0     0                      19.0000000   44.00000   132%     -   26s
H    0     0                      20.0000000   44.00000   120%     -   26s
     0     0   44.00000    0  403   20.00000   44.00000   120%     -   26s
     0     0   43.93333    0  408   20.00000   43.93333   120%     -   27s
     0     0   43.86667    0  344   20.00000   43.86667   119%     -   43s
     0     0   43.86667    0  425   20.00000   43.86667   119%     -   44s
     0     0   43.86667    0  490   20.00000   43.86667   119%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 20
  Clique: 5
  MIR: 126
  StrongCG: 2
  GUB cover: 1
  Zero half: 48
  RLT: 65
  BQP: 2

Explored 1 nodes (63971 simplex iterations) in 50.13 seconds (41.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 20 19 18 ... 15

Time limit reached
Best objective 2.000000000000e+01, best bound 4.300000000000e+01, gap 115.0000%

Wrote result file './lp_solutions/grafo1382.48.sol'

