
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:42:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3269.43.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/grafo3269.43.lp
Reading time = 0.38 seconds
: 190281 rows, 2746 columns, 573344 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 190281 rows, 2746 columns and 573344 nonzeros
Model fingerprint: 0x152b6b30
Variable types: 51 continuous, 2695 integer (2695 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 72665 rows and 78 columns
Presolve time: 1.61s
Presolved: 117616 rows, 2668 columns, 355779 nonzeros
Variable types: 0 continuous, 2668 integer (2617 binary)
Root relaxation presolved: 2657 rows, 120273 columns, 358447 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12858    6.7673016e+01   0.000000e+00   4.143250e+05      5s
   28431    5.4761192e+01   0.000000e+00   6.812717e+04     10s
   45233    5.4730251e+01   0.000000e+00   4.003722e+04     15s
   61021    5.4719479e+01   0.000000e+00   9.586723e+03     20s
   76772    5.4715644e+01   0.000000e+00   6.448207e+02     25s
   90624    5.5000000e+01   0.000000e+00   0.000000e+00     30s
   90624    5.5000000e+01   0.000000e+00   0.000000e+00     30s
   90624    5.5000000e+01   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 5.500000e+01, 90624 iterations, 27.72 seconds (16.22 work units)

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

     0     0   55.00000    0 1659          -   55.00000      -     -   50s
H    0     0                       7.0000000   55.00000   686%     -   50s

Explored 1 nodes (100743 simplex iterations) in 50.08 seconds (34.66 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.500000000000e+01, gap 685.7143%

Wrote result file './lp_solutions/grafo3269.43.sol'

