
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:48:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6249.50.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/grafo6249.50.lp
Reading time = 0.38 seconds
: 222873 rows, 3322 columns, 671526 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 222873 rows, 3322 columns and 671526 nonzeros
Model fingerprint: 0x6f33bd4e
Variable types: 57 continuous, 3265 integer (3265 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 68838 rows and 30 columns
Presolve time: 1.84s
Presolved: 154035 rows, 3292 columns, 465546 nonzeros
Variable types: 0 continuous, 3292 integer (3235 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 3286 rows, 157321 columns, 468838 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11617    9.2137142e+01   0.000000e+00   2.428605e+05      5s
   27408    6.0671680e+01   0.000000e+00   3.294424e+05     10s
   41805    6.0604574e+01   0.000000e+00   5.326950e+04     15s
   56781    6.0581999e+01   0.000000e+00   2.974334e+04     20s
   70509    6.0572961e+01   0.000000e+00   2.747138e+03     25s
   84237    6.0569162e+01   0.000000e+00   3.705226e+03     30s
   91685    6.1000000e+01   0.000000e+00   0.000000e+00     33s
   91685    6.1000000e+01   0.000000e+00   0.000000e+00     33s
   91685    6.1000000e+01   0.000000e+00   0.000000e+00     33s

Root relaxation: objective 6.100000e+01, 91685 iterations, 30.97 seconds (23.58 work units)

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

     0     0   61.00000    0 1763    8.00000   61.00000   662%     -   50s

Explored 1 nodes (99386 simplex iterations) in 50.06 seconds (41.18 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 6.100000000000e+01, gap 662.5000%

Wrote result file './lp_solutions/grafo6249.50.sol'

