
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:15:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3745.41.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/grafo3745.41.lp
Reading time = 0.44 seconds
: 236689 rows, 2288 columns, 711991 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 236689 rows, 2288 columns and 711991 nonzeros
Model fingerprint: 0x2b088436
Variable types: 46 continuous, 2242 integer (2242 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 99348 rows and 10 columns
Presolve time: 2.01s
Presolved: 137341 rows, 2278 columns, 414191 nonzeros
Variable types: 0 continuous, 2278 integer (2232 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2271 rows, 139612 columns, 416469 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14704    7.9041991e+01   0.000000e+00   9.767451e+05      5s
   33515    5.1887777e+01   0.000000e+00   3.934461e+05     10s
   52820    5.1833167e+01   0.000000e+00   5.145350e+04     15s
   72666    5.1817330e+01   0.000000e+00   1.234241e+05     20s
   93220    5.1810257e+01   0.000000e+00   1.330740e+03     25s
  109190    5.2000000e+01   0.000000e+00   0.000000e+00     29s
  109190    5.2000000e+01   0.000000e+00   0.000000e+00     29s
  109190    5.2000000e+01   0.000000e+00   0.000000e+00     29s

Root relaxation: objective 5.200000e+01, 109190 iterations, 26.56 seconds (16.00 work units)

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

     0     0   52.00000    0 1479    9.00000   52.00000   478%     -   50s

Explored 1 nodes (118523 simplex iterations) in 50.07 seconds (35.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.200000000000e+01, gap 477.7778%

Wrote result file './lp_solutions/grafo3745.41.sol'

