
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:34:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6976.40.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/grafo6976.40.lp
Reading time = 0.25 seconds
: 156040 rows, 2567 columns, 470529 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 156040 rows, 2567 columns and 470529 nonzeros
Model fingerprint: 0x36e9d973
Variable types: 52 continuous, 2515 integer (2515 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 51840 rows and 8 columns
Presolve time: 1.04s
Presolved: 104200 rows, 2559 columns, 315446 nonzeros
Variable types: 0 continuous, 2559 integer (2507 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2546 rows, 106746 columns, 318005 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17828    6.3944663e+01   0.000000e+00   1.562945e+05      5s
   40006    6.1904388e+01   0.000000e+00   1.674384e+04     10s
   60952    6.1890000e+01   0.000000e+00   1.191160e+04     15s
   83167    6.1882713e+01   0.000000e+00   5.607246e+03     20s
  104782    6.1879497e+01   0.000000e+00   4.717917e+02     25s
  122279    6.2000000e+01   0.000000e+00   0.000000e+00     29s
  122279    6.2000000e+01   0.000000e+00   0.000000e+00     29s
  122279    6.2000000e+01   0.000000e+00   0.000000e+00     29s

Root relaxation: objective 6.200000e+01, 122279 iterations, 27.76 seconds (23.27 work units)

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

     0     0   62.00000    0 1822    5.00000   62.00000  1140%     -   50s

Explored 1 nodes (133959 simplex iterations) in 50.04 seconds (45.44 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 5 

Time limit reached
Best objective 5.000000000000e+00, best bound 6.200000000000e+01, gap 1140.0000%

Wrote result file './lp_solutions/grafo6976.40.sol'

