
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:09:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3946.37.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/grafo3946.37.lp
Reading time = 0.08 seconds
: 48725 rows, 1750 columns, 147576 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 48725 rows, 1750 columns and 147576 nonzeros
Model fingerprint: 0x9c5c42ba
Variable types: 41 continuous, 1709 integer (1709 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]
Found heuristic solution: objective 3.0000000
Presolve removed 7580 rows and 32 columns
Presolve time: 0.33s
Presolved: 41145 rows, 1718 columns, 125296 nonzeros
Variable types: 0 continuous, 1718 integer (1677 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 22715 rows, 20148 columns, 88436 nonzeros


Root relaxation: objective 3.100000e+01, 1805 iterations, 0.57 seconds (0.42 work units)

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

     0     0   31.00000    0  338    8.00000   31.00000   287%     -    1s
H    0     0                       9.0000000   31.00000   244%     -    1s
     0     0   31.00000    0  552    9.00000   31.00000   244%     -    4s
     0     0   31.00000    0  543    9.00000   31.00000   244%     -    5s
H    0     0                      10.0000000   31.00000   210%     -   18s
H    0     0                      11.0000000   31.00000   182%     -   18s
     0     0   31.00000    0  343   11.00000   31.00000   182%     -   18s
     0     0   31.00000    0  376   11.00000   31.00000   182%     -   19s
H    0     0                      12.0000000   31.00000   158%     -   30s
     0     0   31.00000    0  313   12.00000   31.00000   158%     -   30s
     0     0   31.00000    0  435   12.00000   31.00000   158%     -   31s
H    0     0                      13.0000000   31.00000   138%     -   39s
H    0     0                      14.0000000   31.00000   121%     -   39s
H    0     0                      15.0000000   31.00000   107%     -   39s
     0     0   31.00000    0  392   15.00000   31.00000   107%     -   39s
     0     0   31.00000    0  416   15.00000   31.00000   107%     -   39s
     0     0   31.00000    0  298   15.00000   31.00000   107%     -   43s
     0     0   31.00000    0  291   15.00000   31.00000   107%     -   44s
     0     0   31.00000    0  300   15.00000   31.00000   107%     -   49s
     0     0          -    0        15.00000   31.00000   107%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 4
  Clique: 6
  MIR: 44
  Zero half: 3
  RLT: 23

Explored 1 nodes (75053 simplex iterations) in 50.05 seconds (44.56 work units)
Thread count was 8 (of 8 available processors)

Solution count 9: 15 14 13 ... 3

Time limit reached
Best objective 1.500000000000e+01, best bound 3.100000000000e+01, gap 106.6667%

Wrote result file './lp_solutions/grafo3946.37.sol'

