
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:15:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7367.44.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/grafo7367.44.lp
Reading time = 0.13 seconds
: 82873 rows, 2498 columns, 250756 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 82873 rows, 2498 columns and 250756 nonzeros
Model fingerprint: 0xa6816d2f
Variable types: 49 continuous, 2449 integer (2449 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 11466 rows and 16 columns
Presolve time: 0.54s
Presolved: 71407 rows, 2482 columns, 216877 nonzeros
Variable types: 0 continuous, 2482 integer (2433 binary)
Root relaxation presolved: 2469 rows, 73876 columns, 219359 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21338    4.6680623e+01   0.000000e+00   2.242228e+04      5s
   41307    4.7000000e+01   0.000000e+00   0.000000e+00     10s
   41307    4.7000000e+01   0.000000e+00   0.000000e+00     10s
   41307    4.7000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.700000e+01, 41307 iterations, 8.85 seconds (7.14 work units)
Total elapsed time = 17.87s (DegenMoves)

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

     0     0   47.00000    0  418          -   47.00000      -     -   19s
H    0     0                       7.0000000   47.00000   571%     -   20s
H    0     0                       8.0000000   47.00000   487%     -   20s
     0     0   47.00000    0  727    8.00000   47.00000   487%     -   30s
     0     0   47.00000    0  696    8.00000   47.00000   487%     -   31s
     0     0   47.00000    0  748    8.00000   47.00000   487%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 32
  Cover: 9
  Clique: 3
  MIR: 111
  Zero half: 23
  RLT: 41
  BQP: 2

Explored 1 nodes (72809 simplex iterations) in 50.10 seconds (42.24 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.700000000000e+01, gap 487.5000%

Wrote result file './lp_solutions/grafo7367.44.sol'

