
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:33:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7138.42.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/grafo7138.42.lp
Reading time = 0.11 seconds
: 67419 rows, 2233 columns, 204117 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 67419 rows, 2233 columns and 204117 nonzeros
Model fingerprint: 0xcad259a2
Variable types: 47 continuous, 2186 integer (2186 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 7557 rows and 1 columns
Presolve time: 0.37s
Presolved: 59862 rows, 2232 columns, 181692 nonzeros
Variable types: 0 continuous, 2232 integer (2185 binary)
Root relaxation presolved: 2211 rows, 62073 columns, 183924 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26736    4.7963855e+01   0.000000e+00   3.427299e+03      5s
   47579    4.8000000e+01   0.000000e+00   0.000000e+00      9s
   47579    4.8000000e+01   0.000000e+00   0.000000e+00      9s
   47579    4.8000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.800000e+01, 47579 iterations, 8.75 seconds (7.41 work units)
Total elapsed time = 20.55s (DegenMoves)

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

     0     0   48.00000    0  650          -   48.00000      -     -   24s
H    0     0                       8.0000000   48.00000   500%     -   24s
H    0     0                       9.0000000   48.00000   433%     -   24s
H    0     0                      10.0000000   48.00000   380%     -   24s
     0     0   48.00000    0  909   10.00000   48.00000   380%     -   35s
H    0     0                      11.0000000   48.00000   336%     -   38s
     0     0   48.00000    0  891   11.00000   48.00000   336%     -   38s
     0     0   48.00000    0  861   11.00000   48.00000   336%     -   50s

Cutting planes:
  Gomory: 3
  Cover: 13
  Clique: 3
  MIR: 160
  StrongCG: 2
  Zero half: 49
  RLT: 92
  BQP: 2

Explored 1 nodes (83161 simplex iterations) in 50.06 seconds (43.96 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 11 10 9 8 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.800000000000e+01, gap 336.3636%

Wrote result file './lp_solutions/grafo7138.42.sol'

