
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:08:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3267.46.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/grafo3267.46.lp
Reading time = 0.19 seconds
: 120269 rows, 2268 columns, 362450 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 120269 rows, 2268 columns and 362450 nonzeros
Model fingerprint: 0xf9e55572
Variable types: 43 continuous, 2225 integer (2225 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 35793 rows and 5 columns
Presolve time: 0.74s
Presolved: 84476 rows, 2263 columns, 255245 nonzeros
Variable types: 0 continuous, 2263 integer (2220 binary)
Root relaxation presolved: 2256 rows, 86732 columns, 257508 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25617    4.3795660e+01   0.000000e+00   5.150678e+02      5s
   27458    4.4000000e+01   0.000000e+00   0.000000e+00      5s
   27458    4.4000000e+01   0.000000e+00   0.000000e+00      5s
   27458    4.4000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 4.400000e+01, 27458 iterations, 4.53 seconds (4.04 work units)
Total elapsed time = 11.41s (DegenMoves)

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

     0     0   44.00000    0  326          -   44.00000      -     -   12s
H    0     0                      10.0000000   44.00000   340%     -   14s
     0     0   44.00000    0  447   10.00000   44.00000   340%     -   17s
H    0     0                      12.0000000   44.00000   267%     -   17s
     0     0   44.00000    0  434   12.00000   44.00000   267%     -   18s
     0     0   44.00000    0  306   12.00000   44.00000   267%     -   25s
     0     0   44.00000    0  308   12.00000   44.00000   267%     -   26s
     0     0   44.00000    0  383   12.00000   44.00000   267%     -   50s

Cutting planes:
  Cover: 33
  Clique: 13
  MIR: 144
  StrongCG: 7
  Zero half: 49
  RLT: 57
  BQP: 2

Explored 1 nodes (68058 simplex iterations) in 50.05 seconds (60.30 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 10 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.400000000000e+01, gap 266.6667%

Wrote result file './lp_solutions/grafo3267.46.sol'

