
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:20:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6149.40.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/grafo6149.40.lp
Reading time = 0.14 seconds
: 91463 rows, 2099 columns, 276160 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 91463 rows, 2099 columns and 276160 nonzeros
Model fingerprint: 0x38e3c85d
Variable types: 45 continuous, 2054 integer (2054 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 24641 rows and 20 columns
Presolve time: 0.61s
Presolved: 66822 rows, 2079 columns, 202541 nonzeros
Variable types: 0 continuous, 2079 integer (2034 binary)
Root relaxation presolved: 2076 rows, 68898 columns, 204620 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26149    4.0795572e+01   0.000000e+00   1.194055e+04      5s
   39116    4.1000000e+01   0.000000e+00   0.000000e+00      7s
   39116    4.1000000e+01   0.000000e+00   0.000000e+00      7s
   39116    4.1000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.100000e+01, 39116 iterations, 6.58 seconds (5.01 work units)
Total elapsed time = 14.75s (DegenMoves)
Total elapsed time = 20.95s (DegenMoves)

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

     0     0   41.00000    0  332          -   41.00000      -     -   21s
H    0     0                       7.0000000   41.00000   486%     -   23s
     0     0   41.00000    0  656    7.00000   41.00000   486%     -   29s
H    0     0                       8.0000000   41.00000   412%     -   30s
     0     0   41.00000    0  673    8.00000   41.00000   412%     -   31s
     0     0   41.00000    0  701    8.00000   41.00000   412%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 30
  Cover: 7
  Clique: 22
  MIR: 87
  StrongCG: 1
  GUB cover: 1
  Zero half: 11
  RLT: 44
  BQP: 4

Explored 1 nodes (74919 simplex iterations) in 50.08 seconds (48.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.100000000000e+01, gap 412.5000%

Wrote result file './lp_solutions/grafo6149.40.sol'

