
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:21:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4031.41.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/grafo4031.41.lp
Reading time = 0.88 seconds
: 483297 rows, 3188 columns, 1453138 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 483297 rows, 3188 columns and 1453138 nonzeros
Model fingerprint: 0x80750c3d
Variable types: 58 continuous, 3130 integer (3130 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, 6e+01]
Presolve removed 216124 rows and 4 columns
Presolve time: 4.03s
Presolved: 267173 rows, 3184 columns, 805099 nonzeros
Variable types: 0 continuous, 3184 integer (3126 binary)
Root relaxation presolved: 3166 rows, 270339 columns, 808283 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    1.0728200e+03   0.000000e+00   1.309399e+06      6s
   20663    1.7186695e+02   0.000000e+00   1.028956e+06     11s
   37235    1.3283270e+02   0.000000e+00   1.182358e+06     16s
   48686    1.2129423e+02   0.000000e+00   3.508323e+05     21s
   62637    9.8937529e+01   0.000000e+00   5.141025e+05     26s
   74458    9.1871527e+01   0.000000e+00   1.902955e+05     31s
   86057    8.4827404e+01   0.000000e+00   6.293488e+05     35s
   97809    8.0801105e+01   0.000000e+00   5.172431e+04     40s
  109517    7.8780867e+01   0.000000e+00   1.648567e+05     45s

Root relaxation: time limit, 0 iterations, 45.15 seconds (26.16 work units)

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

H    0     0                       2.0000000  490.00000      -     -   50s

Explored 1 nodes (0 simplex iterations) in 50.10 seconds (30.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 2 

Time limit reached
Best objective 2.000000000000e+00, best bound 4.900000000000e+02, gap 24400.0000%

Wrote result file './lp_solutions/grafo4031.41.sol'

