
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:23:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6171.42.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/grafo6171.42.lp
Reading time = 0.35 seconds
: 176821 rows, 2876 columns, 533220 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 176821 rows, 2876 columns and 533220 nonzeros
Model fingerprint: 0x3e24cb84
Variable types: 55 continuous, 2821 integer (2821 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 3.0000000
Presolve removed 56373 rows and 12 columns
Presolve time: 1.47s
Presolved: 120448 rows, 2864 columns, 364467 nonzeros
Variable types: 0 continuous, 2864 integer (2809 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2856 rows, 123304 columns, 367331 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12643    9.3008881e+01   0.000000e+00   2.053556e+05      5s
   27942    6.6845510e+01   0.000000e+00   2.878066e+05     10s
   42722    6.6737309e+01   0.000000e+00   9.704625e+04     15s
   57338    6.6701173e+01   0.000000e+00   1.068103e+05     20s
   71450    6.6689715e+01   0.000000e+00   6.041618e+03     25s
   85562    6.6686380e+01   0.000000e+00   5.335066e+02     30s
   90408    6.7000000e+01   0.000000e+00   0.000000e+00     32s
   90408    6.7000000e+01   0.000000e+00   0.000000e+00     32s
   90408    6.7000000e+01   0.000000e+00   0.000000e+00     32s

Root relaxation: objective 6.700000e+01, 90408 iterations, 30.41 seconds (18.33 work units)

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

     0     0   67.00000    0 1536   13.00000   67.00000   415%     -   50s

Explored 1 nodes (98761 simplex iterations) in 50.05 seconds (34.24 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 3 

Time limit reached
Best objective 1.300000000000e+01, best bound 6.700000000000e+01, gap 415.3846%

Wrote result file './lp_solutions/grafo6171.42.sol'

