
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 05:59:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6023.37.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/grafo6023.37.lp
Reading time = 0.15 seconds
: 93916 rows, 2101 columns, 283680 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 93916 rows, 2101 columns and 283680 nonzeros
Model fingerprint: 0xf85e13ec
Variable types: 44 continuous, 2057 integer (2057 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 35819 rows and 80 columns
Presolve time: 0.55s
Presolved: 58097 rows, 2021 columns, 176642 nonzeros
Variable types: 0 continuous, 2021 integer (1977 binary)
Root relaxation presolved: 2016 rows, 60113 columns, 178663 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26293    3.9930301e+01   0.000000e+00   2.403026e+03      5s
   36452    4.0000000e+01   0.000000e+00   0.000000e+00      7s
   36452    4.0000000e+01   0.000000e+00   0.000000e+00      7s
   36452    4.0000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.000000e+01, 36452 iterations, 6.30 seconds (5.78 work units)
Total elapsed time = 12.00s (DegenMoves)

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

     0     0   40.00000    0  397          -   40.00000      -     -   13s
H    0     0                      14.0000000   40.00000   186%     -   15s
     0     0   40.00000    0  631   14.00000   40.00000   186%     -   21s
H    0     0                      19.0000000   40.00000   111%     -   21s
     0     0   40.00000    0  630   19.00000   40.00000   111%     -   22s
     0     0   40.00000    0  416   19.00000   40.00000   111%     -   42s
     0     0   40.00000    0  386   19.00000   40.00000   111%     -   43s
     0     0   40.00000    0  587   19.00000   40.00000   111%     -   50s

Cutting planes:
  Lift-and-project: 2
  Cover: 33
  Clique: 13
  MIR: 82
  StrongCG: 2
  Zero half: 54
  RLT: 62
  BQP: 5
  PSD: 1

Explored 1 nodes (75921 simplex iterations) in 50.07 seconds (45.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 19 14 

Time limit reached
Best objective 1.900000000000e+01, best bound 4.000000000000e+01, gap 110.5263%

Wrote result file './lp_solutions/grafo6023.37.sol'

