
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:14:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9856.37.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/grafo9856.37.lp
Reading time = 0.22 seconds
: 135356 rows, 1996 columns, 407774 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 135356 rows, 1996 columns and 407774 nonzeros
Model fingerprint: 0x52adfa0c
Variable types: 42 continuous, 1954 integer (1954 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 57286 rows and 45 columns
Presolve time: 0.83s
Presolved: 78070 rows, 1951 columns, 236230 nonzeros
Variable types: 0 continuous, 1951 integer (1909 binary)
Root relaxation presolved: 1946 rows, 80016 columns, 238181 nonzeros


Root relaxation: objective 4.600000e+01, 1135 iterations, 0.41 seconds (0.39 work units)

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

     0     0   46.00000    0  295          -   46.00000      -     -    3s
H    0     0                      10.0000000   46.00000   360%     -    4s
     0     0   46.00000    0  551   10.00000   46.00000   360%     -    8s
H    0     0                      19.0000000   46.00000   142%     -    8s
H    0     0                      20.0000000   46.00000   130%     -    9s
     0     0   46.00000    0  477   20.00000   46.00000   130%     -   10s
     0     0   46.00000    0  388   20.00000   46.00000   130%     -   23s
H    0     0                      22.0000000   46.00000   109%     -   23s
     0     0   46.00000    0  361   22.00000   46.00000   109%     -   24s
     0     0   46.00000    0  389   22.00000   46.00000   109%     -   36s
     0     0   46.00000    0  350   22.00000   46.00000   109%     -   37s
     0     0   46.00000    0  380   22.00000   46.00000   109%     -   48s
     0     0   46.00000    0  402   22.00000   46.00000   109%     -   49s

Cutting planes:
  Gomory: 1
  Cover: 37
  Clique: 22
  MIR: 109
  StrongCG: 1
  Zero half: 3
  RLT: 26
  BQP: 2
  PSD: 1

Explored 1 nodes (41523 simplex iterations) in 50.02 seconds (57.45 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 22 20 19 10 

Time limit reached
Best objective 2.200000000000e+01, best bound 4.600000000000e+01, gap 109.0909%

Wrote result file './lp_solutions/grafo9856.37.sol'

