
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:52:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6768.50.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/grafo6768.50.lp
Reading time = 0.34 seconds
: 208733 rows, 3243 columns, 629012 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 208733 rows, 3243 columns and 629012 nonzeros
Model fingerprint: 0x1c600959
Variable types: 56 continuous, 3187 integer (3187 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]
Found heuristic solution: objective -0.0000000
Presolve removed 63335 rows and 21 columns
Presolve time: 1.63s
Presolved: 145398 rows, 3222 columns, 439414 nonzeros
Variable types: 0 continuous, 3222 integer (3166 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 3210 rows, 148608 columns, 442636 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15020    7.8342955e+01   0.000000e+00   4.631999e+05      5s
   31019    6.0963735e+01   0.000000e+00   1.993392e+05     10s
   45844    6.0943483e+01   0.000000e+00   2.375733e+04     15s
   60664    6.0931603e+01   0.000000e+00   4.097274e+04     20s
   74916    6.0925081e+01   0.000000e+00   2.240010e+04     25s
   89167    6.0920548e+01   0.000000e+00   2.913458e+03     30s
  103417    6.0918105e+01   0.000000e+00   6.181480e+03     35s
  117667    6.0916899e+01   0.000000e+00   3.893948e+03     40s
  132489    6.0916373e+01   0.000000e+00   4.636846e+02     45s

Root relaxation: time limit, 146324 iterations, 48.15 seconds (36.99 work units)

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

     0     0          -    0         8.00000  297.00000  3612%     -   50s

Explored 1 nodes (146324 simplex iterations) in 50.02 seconds (38.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 2.970000000000e+02, gap 3612.5000%

Wrote result file './lp_solutions/grafo6768.50.sol'

