
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:11:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4058.37.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/grafo4058.37.lp
Reading time = 0.07 seconds
: 41317 rows, 1570 columns, 125068 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 41317 rows, 1570 columns and 125068 nonzeros
Model fingerprint: 0x7ae2565d
Variable types: 37 continuous, 1533 integer (1533 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 6655 rows and 20 columns
Presolve time: 0.25s
Presolved: 34662 rows, 1550 columns, 105436 nonzeros
Variable types: 0 continuous, 1550 integer (1513 binary)
Root relaxation presolved: 19122 rows, 17090 columns, 74356 nonzeros


Root relaxation: objective 3.100000e+01, 3329 iterations, 1.42 seconds (1.26 work units)

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

     0     0   31.00000    0  478          -   31.00000      -     -    4s
H    0     0                       6.0000000   31.00000   417%     -    5s
H    0     0                       7.0000000   31.00000   343%     -    5s
H    0     0                       8.0000000   31.00000   287%     -    5s
     0     0   31.00000    0  680    8.00000   31.00000   287%     -   10s
H    0     0                       9.0000000   31.00000   244%     -   10s
     0     0   31.00000    0  666    9.00000   31.00000   244%     -   10s
H    0     0                      11.0000000   31.00000   182%     -   27s
H    0     0                      12.0000000   31.00000   158%     -   27s
     0     0   31.00000    0  358   12.00000   31.00000   158%     -   27s
     0     0   31.00000    0  396   12.00000   31.00000   158%     -   28s
     0     0   31.00000    0  273   12.00000   31.00000   158%     -   31s
     0     0   31.00000    0  314   12.00000   31.00000   158%     -   31s
     0     0   31.00000    0  255   12.00000   31.00000   158%     -   40s
     0     0   31.00000    0  299   12.00000   31.00000   158%     -   40s
     0     0   31.00000    0  385   12.00000   31.00000   158%     -   43s
     0     0   31.00000    0  306   12.00000   31.00000   158%     -   43s
     0     0   31.00000    0  260   12.00000   31.00000   158%     -   45s
     0     0   31.00000    0  285   12.00000   31.00000   158%     -   46s
     0     0   31.00000    0  305   12.00000   31.00000   158%     -   50s

Cutting planes:
  Cover: 19
  Clique: 9
  MIR: 101
  StrongCG: 1
  GUB cover: 2
  Zero half: 18
  RLT: 53
  BQP: 3

Explored 1 nodes (83419 simplex iterations) in 50.03 seconds (45.48 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 12 11 9 ... 6

Time limit reached
Best objective 1.200000000000e+01, best bound 3.100000000000e+01, gap 158.3333%

Wrote result file './lp_solutions/grafo4058.37.sol'

