
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:57:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6266.44.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/grafo6266.44.lp
Reading time = 0.75 seconds
: 346261 rows, 3053 columns, 1041675 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 346261 rows, 3053 columns and 1041675 nonzeros
Model fingerprint: 0xdc962118
Variable types: 56 continuous, 2997 integer (2997 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 142354 rows and 12 columns
Presolve time: 3.08s
Presolved: 203907 rows, 3041 columns, 615109 nonzeros
Variable types: 0 continuous, 3041 integer (2985 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 3023 rows, 206930 columns, 618150 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    3617    2.0447090e+02   0.000000e+00   8.060860e+05      5s
   22561    1.1109540e+02   0.000000e+00   5.418578e+05     10s
   40021    8.4129309e+01   0.000000e+00   7.850800e+05     16s
   52985    7.2954687e+01   0.000000e+00   4.926651e+05     20s
   66406    6.3880644e+01   0.000000e+00   2.996478e+05     25s
   80393    6.1822742e+01   0.000000e+00   1.027593e+05     30s
   93434    6.1793950e+01   0.000000e+00   1.501574e+04     35s
  106458    6.1780319e+01   0.000000e+00   2.406799e+04     40s
  119482    6.1772428e+01   0.000000e+00   2.682677e+04     45s

Root relaxation: time limit, 130897 iterations, 46.32 seconds (28.29 work units)

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

     0     0          -    0         9.00000  370.00000  4011%     -   50s

Explored 1 nodes (130897 simplex iterations) in 50.04 seconds (31.24 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.700000000000e+02, gap 4011.1111%

Wrote result file './lp_solutions/grafo6266.44.sol'

