
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:38:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7391.45.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/grafo7391.45.lp
Reading time = 0.59 seconds
: 312151 rows, 2785 columns, 938897 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 312151 rows, 2785 columns and 938897 nonzeros
Model fingerprint: 0x601a5417
Variable types: 51 continuous, 2734 integer (2734 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 134546 rows and 10 columns
Presolve time: 2.70s
Presolved: 177605 rows, 2775 columns, 535674 nonzeros
Variable types: 0 continuous, 2775 integer (2724 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2765 rows, 180370 columns, 538449 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8379    1.0999545e+02   0.000000e+00   3.921088e+06      5s
   29914    5.8192371e+01   0.000000e+00   1.066866e+06     10s
   45046    5.3793344e+01   0.000000e+00   9.223581e+04     15s
   61066    5.3737410e+01   0.000000e+00   2.191699e+05     20s
   78457    5.3696916e+01   0.000000e+00   5.306190e+04     25s
   94333    5.3678164e+01   0.000000e+00   3.493589e+04     30s
  110965    5.3670004e+01   0.000000e+00   9.487811e+02     35s
  126841    5.3667428e+01   0.000000e+00   7.020753e+01     40s
  131414    5.4000000e+01   0.000000e+00   0.000000e+00     42s
  131414    5.4000000e+01   0.000000e+00   0.000000e+00     42s
  131414    5.4000000e+01   0.000000e+00   0.000000e+00     42s

Root relaxation: objective 5.400000e+01, 131414 iterations, 38.61 seconds (22.60 work units)

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

     0     0   54.00000    0 1593   13.00000   54.00000   315%     -   50s

Explored 1 nodes (134130 simplex iterations) in 50.08 seconds (32.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 13 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.400000000000e+01, gap 315.3846%

Wrote result file './lp_solutions/grafo7391.45.sol'

