
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:05:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3657.42.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/grafo3657.42.lp
Reading time = 0.21 seconds
: 111937 rows, 2571 columns, 338122 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 111937 rows, 2571 columns and 338122 nonzeros
Model fingerprint: 0x1800f2ac
Variable types: 50 continuous, 2521 integer (2521 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 29286 rows and 21 columns
Presolve time: 0.91s
Presolved: 82651 rows, 2550 columns, 251030 nonzeros
Variable types: 0 continuous, 2550 integer (2500 binary)
Root relaxation presolved: 2544 rows, 85195 columns, 253580 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15315    4.8750070e+01   0.000000e+00   9.958349e+04      5s
   33073    4.8681390e+01   0.000000e+00   2.992260e+04     10s
   50806    4.8667820e+01   0.000000e+00   3.721561e+03     15s
   68612    4.8665754e+01   0.000000e+00   1.592217e+01     20s
   69619    4.9000000e+01   0.000000e+00   0.000000e+00     20s
   69619    4.9000000e+01   0.000000e+00   0.000000e+00     20s
   69619    4.9000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 4.900000e+01, 69619 iterations, 19.21 seconds (11.30 work units)
Total elapsed time = 36.34s (DegenMoves)

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

     0     0   49.00000    0  512          -   49.00000      -     -   38s
H    0     0                       7.0000000   49.00000   600%     -   38s
H    0     0                      10.0000000   49.00000   390%     -   38s
     0     0          -    0        10.00000   49.00000   390%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 44
  Clique: 15
  MIR: 77
  StrongCG: 1
  GUB cover: 5
  Zero half: 138
  RLT: 44

Explored 1 nodes (88851 simplex iterations) in 50.02 seconds (35.61 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 4.900000000000e+01, gap 390.0000%

Wrote result file './lp_solutions/grafo3657.42.sol'

