
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:22:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7142.47.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/grafo7142.47.lp
Reading time = 0.14 seconds
: 89858 rows, 2505 columns, 271522 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 89858 rows, 2505 columns and 271522 nonzeros
Model fingerprint: 0xb4048428
Variable types: 48 continuous, 2457 integer (2457 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 14219 rows and 27 columns
Presolve time: 0.59s
Presolved: 75639 rows, 2478 columns, 229198 nonzeros
Variable types: 0 continuous, 2478 integer (2430 binary)
Root relaxation presolved: 2478 rows, 78117 columns, 231676 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23384    4.3938730e+01   0.000000e+00   4.004712e+04      5s
   42897    4.4000000e+01   0.000000e+00   0.000000e+00      9s
   42897    4.4000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.400000e+01, 42897 iterations, 8.67 seconds (7.64 work units)
Total elapsed time = 21.29s (DegenMoves)

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

     0     0   44.00000    0  580          -   44.00000      -     -   23s
H    0     0                       6.0000000   44.00000   633%     -   28s
     0     0   44.00000    0  870    6.00000   44.00000   633%     -   41s
H    0     0                      10.0000000   44.00000   340%     -   42s
     0     0   44.00000    0  845   10.00000   44.00000   340%     -   48s

Cutting planes:
  Gomory: 1
  Cover: 7
  Clique: 11
  MIR: 144
  Zero half: 16
  RLT: 41
  BQP: 2

Explored 1 nodes (69676 simplex iterations) in 50.26 seconds (43.72 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 6 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.400000000000e+01, gap 340.0000%

Wrote result file './lp_solutions/grafo7142.47.sol'

