
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:20:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7314.43.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/grafo7314.43.lp
Reading time = 0.30 seconds
: 155039 rows, 2461 columns, 467231 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 155039 rows, 2461 columns and 467231 nonzeros
Model fingerprint: 0x6fb0387b
Variable types: 48 continuous, 2413 integer (2413 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 69011 rows and 60 columns
Presolve time: 1.64s
Presolved: 86028 rows, 2401 columns, 260657 nonzeros
Variable types: 0 continuous, 2401 integer (2353 binary)
Root relaxation presolved: 2397 rows, 88425 columns, 263058 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12650    4.4807414e+01   0.000000e+00   2.608323e+04      5s
   30195    4.4760802e+01   0.000000e+00   7.064922e+03     10s
   48555    4.4753455e+01   0.000000e+00   5.611711e+02     15s
   62114    4.5000000e+01   0.000000e+00   0.000000e+00     19s
   62114    4.5000000e+01   0.000000e+00   0.000000e+00     19s
   62114    4.5000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.500000e+01, 62114 iterations, 17.05 seconds (9.54 work units)
Total elapsed time = 37.18s (DegenMoves)

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

     0     0   45.00000    0  551          -   45.00000      -     -   38s
H    0     0                       8.0000000   45.00000   462%     -   42s
     0     0          -    0         8.00000   45.00000   462%     -   50s

Cutting planes:
  Gomory: 52
  Cover: 47
  Clique: 22
  MIR: 136
  StrongCG: 2
  GUB cover: 8
  Zero half: 71
  RLT: 59
  BQP: 6

Explored 1 nodes (80143 simplex iterations) in 50.03 seconds (35.86 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.500000000000e+01, gap 462.5000%

Wrote result file './lp_solutions/grafo7314.43.sol'

