
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:34:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7409.40.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/grafo7409.40.lp
Reading time = 0.10 seconds
: 61569 rows, 2069 columns, 186435 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 61569 rows, 2069 columns and 186435 nonzeros
Model fingerprint: 0xfb1d061d
Variable types: 46 continuous, 2023 integer (2023 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]
Found heuristic solution: objective 3.0000000
Presolve removed 6904 rows and 0 columns
Presolve time: 0.33s
Presolved: 54665 rows, 2069 columns, 166012 nonzeros
Variable types: 0 continuous, 2069 integer (2023 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 29605 rows, 27129 columns, 115892 nonzeros


Root relaxation: objective 3.800000e+01, 2024 iterations, 0.64 seconds (0.58 work units)

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

     0     0   38.00000    0  386    6.00000   38.00000   533%     -    2s
H    0     0                       7.0000000   38.00000   443%     -    3s
H    0     0                       8.0000000   38.00000   375%     -    4s
     0     0   38.00000    0  592    8.00000   38.00000   375%     -    6s
H    0     0                       9.0000000   38.00000   322%     -    7s
     0     0   38.00000    0  548    9.00000   38.00000   322%     -    7s
H    0     0                      10.0000000   38.00000   280%     -   23s
     0     0   38.00000    0  423   10.00000   38.00000   280%     -   24s
     0     0   38.00000    0  436   10.00000   38.00000   280%     -   25s
H    0     0                      11.0000000   38.00000   245%     -   34s
     0     0   38.00000    0  580   11.00000   38.00000   245%     -   34s
     0     0   38.00000    0  570   11.00000   38.00000   245%     -   35s
     0     0   38.00000    0  544   11.00000   38.00000   245%     -   43s
H    0     0                      12.0000000   38.00000   217%     -   43s
     0     0   38.00000    0  539   12.00000   38.00000   217%     -   44s
     0     0   38.00000    0  647   12.00000   38.00000   217%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 24
  Clique: 5
  MIR: 98
  StrongCG: 1
  Zero half: 24
  RLT: 58

Explored 1 nodes (61800 simplex iterations) in 50.05 seconds (47.19 work units)
Thread count was 8 (of 8 available processors)

Solution count 8: 12 11 10 ... 3

Time limit reached
Best objective 1.200000000000e+01, best bound 3.800000000000e+01, gap 216.6667%

Wrote result file './lp_solutions/grafo7409.40.sol'

