
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:38:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7487.42.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/grafo7487.42.lp
Reading time = 0.12 seconds
: 72741 rows, 2340 columns, 220250 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 72741 rows, 2340 columns and 220250 nonzeros
Model fingerprint: 0x777405a8
Variable types: 49 continuous, 2291 integer (2291 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 8719 rows and 39 columns
Presolve time: 0.50s
Presolved: 64022 rows, 2301 columns, 194484 nonzeros
Variable types: 0 continuous, 2301 integer (2252 binary)
Root relaxation presolved: 2301 rows, 66323 columns, 196785 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25858    4.4924442e+01   0.000000e+00   1.779949e+04      5s
   38946    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   38946    4.5000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.500000e+01, 38946 iterations, 7.17 seconds (6.01 work units)
Total elapsed time = 18.47s (DegenMoves)
Total elapsed time = 23.55s (DegenMoves)
Total elapsed time = 25.73s (DegenMoves)

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

     0     0   45.00000    0  594          -   45.00000      -     -   25s
H    0     0                      13.0000000   45.00000   246%     -   28s
     0     0   45.00000    0  715   13.00000   45.00000   246%     -   36s
     0     0   45.00000    0  711   13.00000   45.00000   246%     -   37s
     0     0   45.00000    0  791   13.00000   45.00000   246%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 33
  Cover: 11
  Clique: 3
  MIR: 91
  GUB cover: 2
  Zero half: 10
  RLT: 41

Explored 1 nodes (73832 simplex iterations) in 50.07 seconds (47.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 13 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.500000000000e+01, gap 246.1538%

Wrote result file './lp_solutions/grafo7487.42.sol'

