
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:39:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7044.41.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/grafo7044.41.lp
Reading time = 1.02 seconds
: 507948 rows, 2902 columns, 1526700 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 507948 rows, 2902 columns and 1526700 nonzeros
Model fingerprint: 0xcedee802
Variable types: 54 continuous, 2848 integer (2848 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 233446 rows and 18 columns
Presolve time: 4.49s
Presolved: 274502 rows, 2884 columns, 826652 nonzeros
Variable types: 0 continuous, 2884 integer (2830 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2875 rows, 277377 columns, 829536 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    1.0403600e+03   0.000000e+00   1.448575e+06      6s
   22083    1.5782966e+02   0.000000e+00   4.482055e+05     11s
   44362    1.1699631e+02   0.000000e+00   1.500465e+06     17s
   54678    1.0141390e+02   0.000000e+00   8.263789e+05     20s
   70608    7.2987956e+01   0.000000e+00   1.934357e+05     26s
   84044    6.6928752e+01   0.000000e+00   1.603903e+05     30s
   97446    6.5866344e+01   0.000000e+00   6.393438e+05     35s
  111729    6.5828834e+01   0.000000e+00   1.355686e+05     40s
  127128    6.5811291e+01   0.000000e+00   5.027035e+04     45s

Root relaxation: time limit, 140962 iterations, 44.66 seconds (27.47 work units)

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

     0     0          -    0         8.00000  434.00000  5325%     -   50s

Explored 1 nodes (140962 simplex iterations) in 50.05 seconds (31.69 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.340000000000e+02, gap 5325.0000%

Wrote result file './lp_solutions/grafo7044.41.sol'

