
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:27:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7237.44.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/grafo7237.44.lp
Reading time = 0.16 seconds
: 102088 rows, 2578 columns, 308460 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 102088 rows, 2578 columns and 308460 nonzeros
Model fingerprint: 0x0b7bad80
Variable types: 51 continuous, 2527 integer (2527 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]
Found heuristic solution: objective 1.0000000
Presolve removed 19839 rows and 1 columns
Presolve time: 0.57s
Presolved: 82249 rows, 2577 columns, 249325 nonzeros
Variable types: 0 continuous, 2577 integer (2526 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 2538 rows, 84787 columns, 251902 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19954    5.1954155e+01   0.000000e+00   1.344805e+04      5s
   39781    5.1935936e+01   0.000000e+00   4.073026e+04     10s
   59049    5.1927635e+01   0.000000e+00   1.141490e+04     15s
   77361    5.2000000e+01   0.000000e+00   0.000000e+00     20s
   77361    5.2000000e+01   0.000000e+00   0.000000e+00     20s
   77361    5.2000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 5.200000e+01, 77361 iterations, 19.07 seconds (17.14 work units)
Total elapsed time = 35.45s (DegenMoves)

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

     0     0   52.00000    0  587    3.00000   52.00000  1633%     -   39s
H    0     0                       7.0000000   52.00000   643%     -   39s
     0     0          -    0         7.00000   52.00000   643%     -   50s

Cutting planes:
  Gomory: 39
  Cover: 49
  Clique: 10
  MIR: 125
  StrongCG: 3
  Zero half: 24
  RLT: 66

Explored 1 nodes (101926 simplex iterations) in 50.02 seconds (49.47 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 7 3 1 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.200000000000e+01, gap 642.8571%

Wrote result file './lp_solutions/grafo7237.44.sol'

