
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:46:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7571.41.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/grafo7571.41.lp
Reading time = 0.77 seconds
: 398946 rows, 3198 columns, 1200202 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 398946 rows, 3198 columns and 1200202 nonzeros
Model fingerprint: 0x32d3de85
Variable types: 60 continuous, 3138 integer (3138 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 164526 rows and 21 columns
Presolve time: 4.00s
Presolved: 234420 rows, 3177 columns, 707136 nonzeros
Variable types: 0 continuous, 3177 integer (3117 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 3177 rows, 237597 columns, 710313 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    8.8602000e+02   0.000000e+00   1.228231e+06      5s
   21732    8.3833018e+01   0.000000e+00   4.773238e+06     11s
   32864    7.1246789e+01   0.000000e+00   1.325468e+06     15s
   45144    6.8949196e+01   0.000000e+00   2.306768e+05     20s
   57872    6.7875192e+01   0.000000e+00   1.586412e+05     25s
   69527    6.7840443e+01   0.000000e+00   1.003300e+05     30s
   81162    6.7813172e+01   0.000000e+00   2.401239e+04     36s
   92585    6.7798670e+01   0.000000e+00   4.516703e+04     40s
  104012    6.7785864e+01   0.000000e+00   4.901784e+04     45s

Root relaxation: time limit, 115937 iterations, 45.59 seconds (28.04 work units)

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

     0     0          -    0         7.00000  402.00000  5643%     -   50s

Explored 1 nodes (115937 simplex iterations) in 50.03 seconds (31.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.020000000000e+02, gap 5642.8571%

Wrote result file './lp_solutions/grafo7571.41.sol'

