
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:33:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5254.45.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/grafo5254.45.lp
Reading time = 0.11 seconds
: 70461 rows, 2100 columns, 212779 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 70461 rows, 2100 columns and 212779 nonzeros
Model fingerprint: 0xe9285f17
Variable types: 41 continuous, 2059 integer (2059 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 13393 rows and 23 columns
Presolve time: 0.47s
Presolved: 57068 rows, 2077 columns, 172960 nonzeros
Variable types: 0 continuous, 2077 integer (2036 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2074 rows, 59142 columns, 175037 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28570    4.1949172e+01   0.000000e+00   7.004137e+01      5s
   31022    4.2000000e+01   0.000000e+00   0.000000e+00      5s
   31022    4.2000000e+01   0.000000e+00   0.000000e+00      5s
   31022    4.2000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 4.200000e+01, 31022 iterations, 4.87 seconds (4.29 work units)
Total elapsed time = 10.55s (DegenMoves)

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

     0     0   42.00000    0  442    9.00000   42.00000   367%     -   12s
H    0     0                      10.0000000   42.00000   320%     -   12s
     0     0   42.00000    0  660   10.00000   42.00000   320%     -   18s
     0     0   42.00000    0  651   10.00000   42.00000   320%     -   18s
H    0     0                      11.0000000   42.00000   282%     -   48s
H    0     0                      12.0000000   42.00000   250%     -   48s
H    0     0                      13.0000000   42.00000   223%     -   48s
     0     0   42.00000    0  549   13.00000   42.00000   223%     -   49s
     0     0          -    0        13.00000   42.00000   223%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 2
  Cover: 2
  Clique: 3
  MIR: 79
  GUB cover: 2
  Zero half: 6
  RLT: 41

Explored 1 nodes (70825 simplex iterations) in 50.07 seconds (46.85 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 13 12 11 ... 9

Time limit reached
Best objective 1.300000000000e+01, best bound 4.200000000000e+01, gap 223.0769%

Wrote result file './lp_solutions/grafo5254.45.sol'

