
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:53:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6128.47.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/grafo6128.47.lp
Reading time = 0.29 seconds
: 162005 rows, 2929 columns, 488571 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 162005 rows, 2929 columns and 488571 nonzeros
Model fingerprint: 0xa1c1f586
Variable types: 54 continuous, 2875 integer (2875 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]
Found heuristic solution: objective 1.0000000
Presolve removed 44431 rows and 34 columns
Presolve time: 1.42s
Presolved: 117574 rows, 2895 columns, 355743 nonzeros
Variable types: 0 continuous, 2895 integer (2841 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2889 rows, 120463 columns, 358638 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   10833    5.5895281e+01   0.000000e+00   4.827329e+06      5s
   21165    5.3776832e+01   0.000000e+00   7.458333e+05     10s
   35679    5.3717418e+01   0.000000e+00   4.491151e+04     15s
   49147    5.3701391e+01   0.000000e+00   1.898691e+04     20s
   62097    5.3694855e+01   0.000000e+00   1.315526e+04     25s
   75565    5.3692029e+01   0.000000e+00   2.197148e+03     30s
   87997    5.3691263e+01   0.000000e+00   5.872356e+00     35s
   88628    5.4000000e+01   0.000000e+00   0.000000e+00     35s
   88628    5.4000000e+01   0.000000e+00   0.000000e+00     35s
   88628    5.4000000e+01   0.000000e+00   0.000000e+00     35s

Root relaxation: objective 5.400000e+01, 88628 iterations, 33.85 seconds (17.70 work units)

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

     0     0   54.00000    0 1677    7.00000   54.00000   671%     -   50s

Explored 1 nodes (93821 simplex iterations) in 50.08 seconds (28.99 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 1 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.400000000000e+01, gap 671.4286%

Wrote result file './lp_solutions/grafo6128.47.sol'

