
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 19:20:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6388.34.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/grafo6388.34.lp
Reading time = 0.11 seconds
: 70849 rows, 1806 columns, 214124 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 70849 rows, 1806 columns and 214124 nonzeros
Model fingerprint: 0xa18dcd80
Variable types: 43 continuous, 1763 integer (1763 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 20988 rows and 26 columns
Presolve time: 0.49s
Presolved: 49861 rows, 1780 columns, 151609 nonzeros
Variable types: 0 continuous, 1780 integer (1737 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 1777 rows, 51638 columns, 153389 nonzeros


Root relaxation: objective 4.500000e+01, 1400 iterations, 0.26 seconds (0.23 work units)

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

     0     0   45.00000    0  319   11.00000   45.00000   309%     -    3s
H    0     0                      14.0000000   45.00000   221%     -    3s
     0     0   45.00000    0  592   14.00000   45.00000   221%     -    7s
     0     0   45.00000    0  572   14.00000   45.00000   221%     -    8s
H    0     0                      16.0000000   45.00000   181%     -   22s
H    0     0                      17.0000000   45.00000   165%     -   22s
H    0     0                      18.0000000   45.00000   150%     -   22s
H    0     0                      19.0000000   45.00000   137%     -   22s
     0     0   45.00000    0  567   19.00000   45.00000   137%     -   22s
     0     0   45.00000    0  508   19.00000   45.00000   137%     -   23s
H    0     0                      20.0000000   45.00000   125%     -   35s
     0     0   45.00000    0  545   20.00000   45.00000   125%     -   35s
     0     0   45.00000    0  543   20.00000   45.00000   125%     -   36s
     0     0   45.00000    0  507   20.00000   45.00000   125%     -   50s

Cutting planes:
  Cover: 2
  Clique: 1
  MIR: 27
  Zero half: 1
  RLT: 22

Explored 1 nodes (47310 simplex iterations) in 50.12 seconds (41.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 20 19 18 ... 11

Time limit reached
Best objective 2.000000000000e+01, best bound 4.500000000000e+01, gap 125.0000%

Wrote result file './lp_solutions/grafo6388.34.sol'

