
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:29:41 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6172.41.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/grafo6172.41.lp
Reading time = 0.40 seconds
: 205485 rows, 2156 columns, 618178 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 205485 rows, 2156 columns and 618178 nonzeros
Model fingerprint: 0x47392e8e
Variable types: 43 continuous, 2113 integer (2113 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 85236 rows and 6 columns
Presolve time: 1.63s
Presolved: 120249 rows, 2150 columns, 362825 nonzeros
Variable types: 0 continuous, 2150 integer (2107 binary)
Root relaxation presolved: 2131 rows, 122380 columns, 364975 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15791    4.0893150e+01   0.000000e+00   9.059236e+04      5s
   36490    4.0803519e+01   0.000000e+00   1.529448e+03     10s
   41425    4.1000000e+01   0.000000e+00   0.000000e+00     11s
   41425    4.1000000e+01   0.000000e+00   0.000000e+00     11s
   41425    4.1000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.100000e+01, 41425 iterations, 9.24 seconds (5.53 work units)
Total elapsed time = 22.68s (DegenMoves)
Total elapsed time = 29.27s (DegenMoves)

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

     0     0   41.00000    0  458          -   41.00000      -     -   30s
H    0     0                       4.0000000   41.00000   925%     -   30s
     0     0   41.00000    0  796    4.00000   41.00000   925%     -   48s

Cutting planes:
  Gomory: 5
  Cover: 1
  Clique: 21
  MIR: 67
  Zero half: 2
  RLT: 16
  BQP: 2

Explored 1 nodes (60231 simplex iterations) in 50.03 seconds (46.83 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 4.100000000000e+01, gap 925.0000%

Wrote result file './lp_solutions/grafo6172.41.sol'

