
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:24:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5565.41.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/grafo5565.41.lp
Reading time = 0.48 seconds
: 246012 rows, 2471 columns, 740255 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 246012 rows, 2471 columns and 740255 nonzeros
Model fingerprint: 0xc724586a
Variable types: 48 continuous, 2423 integer (2423 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 110732 rows and 25 columns
Presolve time: 2.29s
Presolved: 135280 rows, 2446 columns, 408654 nonzeros
Variable types: 0 continuous, 2446 integer (2398 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2443 rows, 137723 columns, 411100 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12893    6.6506868e+01   0.000000e+00   1.540718e+06      5s
   31910    4.4912258e+01   0.000000e+00   3.066643e+04     10s
   49662    4.4902164e+01   0.000000e+00   1.062055e+04     15s
   64163    4.5000000e+01   0.000000e+00   0.000000e+00     19s
   64163    4.5000000e+01   0.000000e+00   0.000000e+00     19s
   64163    4.5000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.500000e+01, 64163 iterations, 16.62 seconds (10.86 work units)
Total elapsed time = 43.95s (DegenMoves)
Total elapsed time = 46.34s (DegenMoves)

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

     0     0   45.00000    0  513   10.00000   45.00000   350%     -   48s
H    0     0                      12.0000000   45.00000   275%     -   48s

Cutting planes:
  Cover: 43
  Clique: 20
  MIR: 103
  GUB cover: 4

Explored 1 nodes (77649 simplex iterations) in 50.06 seconds (40.31 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 10 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.500000000000e+01, gap 275.0000%

Wrote result file './lp_solutions/grafo5565.41.sol'

