
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:59:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3277.42.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/grafo3277.42.lp
Reading time = 0.79 seconds
: 412204 rows, 2486 columns, 1238756 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 412204 rows, 2486 columns and 1238756 nonzeros
Model fingerprint: 0xe8a2900c
Variable types: 47 continuous, 2439 integer (2439 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 189755 rows and 10 columns
Presolve time: 3.80s
Presolved: 222449 rows, 2476 columns, 669845 nonzeros
Variable types: 0 continuous, 2476 integer (2429 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2463 rows, 224912 columns, 672321 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    6.5931111e+02   0.000000e+00   6.065692e+05      5s
   29227    8.5500659e+01   0.000000e+00   2.117383e+06     10s
   45086    5.5927275e+01   0.000000e+00   6.216664e+05     15s
   61896    4.5855729e+01   0.000000e+00   7.111870e+04     20s
   80332    4.5815506e+01   0.000000e+00   4.012826e+04     25s
   99720    4.5799035e+01   0.000000e+00   2.076266e+04     30s
  118081    4.5793280e+01   0.000000e+00   6.982665e+02     35s
  128227    4.6000000e+01   0.000000e+00   0.000000e+00     38s
  128227    4.6000000e+01   0.000000e+00   0.000000e+00     38s
  128227    4.6000000e+01   0.000000e+00   0.000000e+00     38s

Root relaxation: objective 4.600000e+01, 128227 iterations, 33.83 seconds (19.87 work units)

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

     0     0   46.00000    0 1400    6.00000   46.00000   667%     -   50s

Explored 1 nodes (132280 simplex iterations) in 50.10 seconds (33.66 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.600000000000e+01, gap 666.6667%

Wrote result file './lp_solutions/grafo3277.42.sol'

