
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:03:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6857.41.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/grafo6857.41.lp
Reading time = 0.20 seconds
: 121201 rows, 2536 columns, 365963 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 121201 rows, 2536 columns and 365963 nonzeros
Model fingerprint: 0x1a61e910
Variable types: 52 continuous, 2484 integer (2484 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 31709 rows and 24 columns
Presolve time: 0.85s
Presolved: 89492 rows, 2512 columns, 271252 nonzeros
Variable types: 0 continuous, 2512 integer (2460 binary)
Root relaxation presolved: 2506 rows, 91998 columns, 273764 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21770    5.1788509e+01   0.000000e+00   5.530425e+04      5s
   35085    5.2000000e+01   0.000000e+00   0.000000e+00      8s
   35085    5.2000000e+01   0.000000e+00   0.000000e+00      8s
   35085    5.2000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 5.200000e+01, 35085 iterations, 7.00 seconds (5.77 work units)
Total elapsed time = 21.00s (DegenMoves)
Total elapsed time = 29.38s (DegenMoves)

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

     0     0   52.00000    0  469          -   52.00000      -     -   30s
H    0     0                       7.0000000   52.00000   643%     -   30s
     0     0   52.00000    0  848    7.00000   52.00000   643%     -   43s
H    0     0                      10.0000000   52.00000   420%     -   44s
     0     0   52.00000    0  859   10.00000   52.00000   420%     -   45s

Cutting planes:
  Gomory: 4
  Lift-and-project: 28
  Cover: 32
  Clique: 14
  MIR: 152
  StrongCG: 1
  GUB cover: 1
  Zero half: 44
  RLT: 23

Explored 1 nodes (65214 simplex iterations) in 50.20 seconds (54.47 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 7 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.200000000000e+01, gap 420.0000%

Wrote result file './lp_solutions/grafo6857.41.sol'

