
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:53:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6148.39.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/grafo6148.39.lp
Reading time = 0.29 seconds
: 174855 rows, 2079 columns, 526300 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 174855 rows, 2079 columns and 526300 nonzeros
Model fingerprint: 0x6fcef4ec
Variable types: 44 continuous, 2035 integer (2035 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 72603 rows and 25 columns
Presolve time: 1.37s
Presolved: 102252 rows, 2054 columns, 308843 nonzeros
Variable types: 0 continuous, 2054 integer (2010 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2054 rows, 104306 columns, 310897 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22817    4.0928808e+01   0.000000e+00   1.499587e+05      5s
   50609    4.0823996e+01   0.000000e+00   1.300316e+04     10s
   71591    4.1000000e+01   0.000000e+00   0.000000e+00     14s
   71591    4.1000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.100000e+01, 71591 iterations, 12.22 seconds (8.96 work units)
Total elapsed time = 25.14s (DegenMoves)

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

     0     0   41.00000    0  482    8.00000   41.00000   413%     -   29s
H    0     0                      10.0000000   41.00000   310%     -   29s
     0     0   41.00000    0  693   10.00000   41.00000   310%     -   43s
     0     0   41.00000    0  687   10.00000   41.00000   310%     -   44s
     0     0          -    0        10.00000   41.00000   310%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 32
  Cover: 12
  Clique: 14
  MIR: 95
  GUB cover: 1
  Zero half: 29
  RLT: 50
  BQP: 6

Explored 1 nodes (90473 simplex iterations) in 50.02 seconds (48.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.100000000000e+01, gap 310.0000%

Wrote result file './lp_solutions/grafo6148.39.sol'

