
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:17:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3889.41.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/grafo3889.41.lp
Reading time = 0.26 seconds
: 137548 rows, 2697 columns, 415246 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 137548 rows, 2697 columns and 415246 nonzeros
Model fingerprint: 0x759cca03
Variable types: 54 continuous, 2643 integer (2643 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 37009 rows and 28 columns
Presolve time: 1.29s
Presolved: 100539 rows, 2669 columns, 304737 nonzeros
Variable types: 0 continuous, 2669 integer (2615 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2669 rows, 103208 columns, 307406 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15270    5.5982508e+01   0.000000e+00   1.473877e+05      5s
   29872    5.3954985e+01   0.000000e+00   5.726099e+04     10s
   46171    5.3943354e+01   0.000000e+00   5.724301e+04     15s
   61289    5.3936765e+01   0.000000e+00   1.766425e+04     20s
   75972    5.3932873e+01   0.000000e+00   2.425937e+04     25s
   92561    5.3930089e+01   0.000000e+00   7.520128e+03     30s
  108160    5.3928477e+01   0.000000e+00   5.571342e+03     35s
  124642    5.3927187e+01   0.000000e+00   1.122893e+03     40s
  138951    5.4000000e+01   0.000000e+00   0.000000e+00     45s
  138951    5.4000000e+01   0.000000e+00   0.000000e+00     45s

Root relaxation: objective 5.400000e+01, 138951 iterations, 43.62 seconds (28.07 work units)

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

     0     0   54.00000    0 1845    8.00000   54.00000   575%     -   50s

Explored 1 nodes (140440 simplex iterations) in 50.04 seconds (33.78 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.400000000000e+01, gap 575.0000%

Wrote result file './lp_solutions/grafo3889.41.sol'

