
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:01:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11172.41.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/grafo11172.41.lp
Reading time = 0.18 seconds
: 93496 rows, 2356 columns, 282582 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 93496 rows, 2356 columns and 282582 nonzeros
Model fingerprint: 0x8a2125e9
Variable types: 48 continuous, 2308 integer (2308 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 29435 rows and 66 columns
Presolve time: 0.72s
Presolved: 64061 rows, 2290 columns, 194744 nonzeros
Variable types: 0 continuous, 2290 integer (2242 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2287 rows, 66348 columns, 197034 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19864    4.3937851e+01   0.000000e+00   1.908030e+03      5s
   32499    4.4000000e+01   0.000000e+00   0.000000e+00      8s
   32499    4.4000000e+01   0.000000e+00   0.000000e+00      8s
   32499    4.4000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.400000e+01, 32499 iterations, 7.54 seconds (4.78 work units)
Total elapsed time = 18.26s (DegenMoves)
Total elapsed time = 22.73s (DegenMoves)

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

     0     0   44.00000    0  500    9.00000   44.00000   389%     -   23s
H    0     0                      11.0000000   44.00000   300%     -   26s
     0     0   44.00000    0  718   11.00000   44.00000   300%     -   38s
     0     0   44.00000    0  704   11.00000   44.00000   300%     -   40s
     0     0          -    0        11.00000   44.00000   300%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 28
  Cover: 3
  Clique: 8
  MIR: 157
  StrongCG: 1
  GUB cover: 2
  Zero half: 59
  RLT: 44
  BQP: 3
  PSD: 1

Explored 1 nodes (58979 simplex iterations) in 50.09 seconds (34.84 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 9 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.400000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo11172.41.sol'

