
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:09:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3505.43.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/grafo3505.43.lp
Reading time = 0.33 seconds
: 125261 rows, 2506 columns, 377887 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 125261 rows, 2506 columns and 377887 nonzeros
Model fingerprint: 0xdcbc6f1c
Variable types: 49 continuous, 2457 integer (2457 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 4.0000000
Presolve removed 36436 rows and 31 columns
Presolve time: 1.39s
Presolved: 88825 rows, 2475 columns, 268974 nonzeros
Variable types: 0 continuous, 2475 integer (2426 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2469 rows, 91294 columns, 271449 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15401    6.6852826e+01   0.000000e+00   1.334047e+05      5s
   32660    5.7780120e+01   0.000000e+00   5.945633e+04     10s
   48980    5.7758081e+01   0.000000e+00   7.577468e+03     15s
   65300    5.7751798e+01   0.000000e+00   5.619150e+02     20s
   75794    5.8000000e+01   0.000000e+00   0.000000e+00     23s
   75794    5.8000000e+01   0.000000e+00   0.000000e+00     23s
   75794    5.8000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 5.800000e+01, 75794 iterations, 21.80 seconds (12.02 work units)

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

     0     0   58.00000    0 1422    8.00000   58.00000   625%     -   50s

Explored 1 nodes (91316 simplex iterations) in 50.04 seconds (34.96 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 4 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.800000000000e+01, gap 625.0000%

Wrote result file './lp_solutions/grafo3505.43.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:51:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3505.43.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/grafo3505.43.lp
Reading time = 0.20 seconds
: 125261 rows, 2506 columns, 377887 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 125261 rows, 2506 columns and 377887 nonzeros
Model fingerprint: 0xdcbc6f1c
Variable types: 49 continuous, 2457 integer (2457 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 4.0000000
Presolve removed 36436 rows and 31 columns
Presolve time: 0.84s
Presolved: 88825 rows, 2475 columns, 268974 nonzeros
Variable types: 0 continuous, 2475 integer (2426 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2469 rows, 91294 columns, 271449 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22043    6.0811662e+01   0.000000e+00   2.971903e+05      5s
   44900    5.7761485e+01   0.000000e+00   8.571835e+03     10s
   67748    5.7751465e+01   0.000000e+00   1.180074e+03     15s
   75794    5.8000000e+01   0.000000e+00   0.000000e+00     17s
   75794    5.8000000e+01   0.000000e+00   0.000000e+00     17s
   75794    5.8000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 5.800000e+01, 75794 iterations, 15.93 seconds (12.02 work units)
Total elapsed time = 40.43s (DegenMoves)

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

     0     0   58.00000    0 1042    8.00000   58.00000   625%     -   50s

Explored 1 nodes (99802 simplex iterations) in 50.03 seconds (54.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 4 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.800000000000e+01, gap 625.0000%

Wrote result file './lp_solutions/grafo3505.43.sol'

