
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:24:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6716.46.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/grafo6716.46.lp
Reading time = 0.32 seconds
: 132029 rows, 3115 columns, 399064 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 132029 rows, 3115 columns and 399064 nonzeros
Model fingerprint: 0x87b1d654
Variable types: 58 continuous, 3057 integer (3057 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 24164 rows and 41 columns
Presolve time: 1.95s
Presolved: 107865 rows, 3074 columns, 327159 nonzeros
Variable types: 0 continuous, 3074 integer (3016 binary)
Root relaxation presolved: 3068 rows, 110933 columns, 330233 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8095    5.8959634e+01   0.000000e+00   1.134827e+06      5s
   24514    5.4882236e+01   0.000000e+00   5.254658e+04     10s
   38650    5.4872954e+01   0.000000e+00   6.483902e+03     15s
   51880    5.4870469e+01   0.000000e+00   4.523224e+03     20s
   61361    5.5000000e+01   0.000000e+00   0.000000e+00     23s
   61361    5.5000000e+01   0.000000e+00   0.000000e+00     23s
   61361    5.5000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 5.500000e+01, 61361 iterations, 21.19 seconds (13.81 work units)
Total elapsed time = 45.04s (DegenMoves)

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

     0     0   55.00000    0  638          -   55.00000      -     -   47s
H    0     0                       7.0000000   55.00000   686%     -   48s
H    0     0                       9.0000000   55.00000   511%     -   48s

Cutting planes:
  Cover: 53
  Clique: 4
  MIR: 212
  StrongCG: 1
  GUB cover: 4

Explored 1 nodes (77369 simplex iterations) in 50.07 seconds (38.31 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.500000000000e+01, gap 511.1111%

Wrote result file './lp_solutions/grafo6716.46.sol'

