
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:44:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7744.42.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/grafo7744.42.lp
Reading time = 0.12 seconds
: 68107 rows, 2209 columns, 206148 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 68107 rows, 2209 columns and 206148 nonzeros
Model fingerprint: 0x8aa854ff
Variable types: 47 continuous, 2162 integer (2162 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 7735 rows and 0 columns
Presolve time: 0.37s
Presolved: 60372 rows, 2209 columns, 183241 nonzeros
Variable types: 0 continuous, 2209 integer (2162 binary)
Root relaxation presolved: 2176 rows, 62548 columns, 185450 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27033    4.0969043e+01   0.000000e+00   3.308700e+03      5s
   47821    4.1000000e+01   0.000000e+00   0.000000e+00      9s
   47821    4.1000000e+01   0.000000e+00   0.000000e+00      9s
   47821    4.1000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.100000e+01, 47821 iterations, 8.78 seconds (7.26 work units)
Total elapsed time = 17.78s (DegenMoves)

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

     0     0   41.00000    0  428          -   41.00000      -     -   19s
H    0     0                       9.0000000   41.00000   356%     -   21s
H    0     0                      11.0000000   41.00000   273%     -   21s
     0     0   41.00000    0  714   11.00000   41.00000   273%     -   27s
H    0     0                      12.0000000   41.00000   242%     -   28s
     0     0   41.00000    0  669   12.00000   41.00000   242%     -   29s
     0     0   41.00000    0  520   12.00000   41.00000   242%     -   44s
     0     0   41.00000    0  541   12.00000   41.00000   242%     -   46s
     0     0          -    0        12.00000   41.00000   242%     -   50s

Cutting planes:
  Cover: 29
  Clique: 4
  MIR: 187
  StrongCG: 1
  Zero half: 70
  RLT: 74
  Relax-and-lift: 1
  BQP: 2

Explored 1 nodes (85660 simplex iterations) in 50.06 seconds (42.72 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 11 9 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.100000000000e+01, gap 241.6667%

Wrote result file './lp_solutions/grafo7744.42.sol'

