
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 04:46:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2510.48.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/grafo2510.48.lp
Reading time = 0.22 seconds
: 97332 rows, 2908 columns, 294520 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 97332 rows, 2908 columns and 294520 nonzeros
Model fingerprint: 0x1802985d
Variable types: 55 continuous, 2853 integer (2853 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, 6e+01]
Presolve removed 6545 rows and 1 columns
Presolve time: 0.87s
Presolved: 90787 rows, 2907 columns, 275219 nonzeros
Variable types: 0 continuous, 2907 integer (2852 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2862 rows, 93649 columns, 278126 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14236    4.7971759e+01   0.000000e+00   9.778168e+04      5s
   28492    4.7955633e+01   0.000000e+00   2.815543e+04     10s
   41956    4.7948178e+01   0.000000e+00   2.097351e+04     15s
   55024    4.7943745e+01   0.000000e+00   1.862333e+04     20s
   67300    4.7941800e+01   0.000000e+00   1.903207e+03     25s
   77640    4.8000000e+01   0.000000e+00   0.000000e+00     29s
   77640    4.8000000e+01   0.000000e+00   0.000000e+00     29s
   77640    4.8000000e+01   0.000000e+00   0.000000e+00     29s

Root relaxation: objective 4.800000e+01, 77640 iterations, 28.17 seconds (17.24 work units)

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

     0     0   48.00000    0 1789    4.00000   48.00000  1100%     -   50s

Explored 1 nodes (88030 simplex iterations) in 50.04 seconds (32.87 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 4.800000000000e+01, gap 1100.0000%

Wrote result file './lp_solutions/grafo2510.48.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 05:18:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2510.48.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/grafo2510.48.lp
Reading time = 0.20 seconds
: 97332 rows, 2908 columns, 294520 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 97332 rows, 2908 columns and 294520 nonzeros
Model fingerprint: 0x1802985d
Variable types: 55 continuous, 2853 integer (2853 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, 6e+01]
Presolve removed 6545 rows and 1 columns
Presolve time: 0.73s
Presolved: 90787 rows, 2907 columns, 275219 nonzeros
Variable types: 0 continuous, 2907 integer (2852 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2862 rows, 93649 columns, 278126 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14632    4.7971058e+01   0.000000e+00   4.129761e+04      5s
   28492    4.7955633e+01   0.000000e+00   2.815543e+04     10s
   40372    4.7948800e+01   0.000000e+00   1.620393e+04     15s
   53440    4.7944234e+01   0.000000e+00   1.398289e+04     20s
   66508    4.7941871e+01   0.000000e+00   1.007329e+03     25s
   77640    4.8000000e+01   0.000000e+00   0.000000e+00     30s
   77640    4.8000000e+01   0.000000e+00   0.000000e+00     30s
   77640    4.8000000e+01   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 4.800000e+01, 77640 iterations, 28.70 seconds (17.24 work units)
Total elapsed time = 30.03s (DegenMoves)

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

     0     0   48.00000    0 1789    4.00000   48.00000  1100%     -   50s

Explored 1 nodes (86875 simplex iterations) in 50.05 seconds (31.92 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 4.800000000000e+01, gap 1100.0000%

Wrote result file './lp_solutions/grafo2510.48.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 20 06:21:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2510.48.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/grafo2510.48.lp
Reading time = 0.18 seconds
: 97332 rows, 2908 columns, 294520 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 97332 rows, 2908 columns and 294520 nonzeros
Model fingerprint: 0x1802985d
Variable types: 55 continuous, 2853 integer (2853 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, 6e+01]
Presolve removed 6545 rows and 1 columns
Presolve time: 0.63s
Presolved: 90787 rows, 2907 columns, 275219 nonzeros
Variable types: 0 continuous, 2907 integer (2852 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2862 rows, 93649 columns, 278126 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17008    4.7967632e+01   0.000000e+00   3.930607e+04      5s
   32452    4.7953048e+01   0.000000e+00   1.708595e+04     10s
   47500    4.7946032e+01   0.000000e+00   3.210764e+04     15s
   62548    4.7942364e+01   0.000000e+00   6.355794e+03     20s
   76804    4.7941352e+01   0.000000e+00   1.035480e+01     25s
   77640    4.8000000e+01   0.000000e+00   0.000000e+00     25s
   77640    4.8000000e+01   0.000000e+00   0.000000e+00     25s
   77640    4.8000000e+01   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 4.800000e+01, 77640 iterations, 24.63 seconds (17.24 work units)
Total elapsed time = 45.50s (DegenMoves)

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

     0     0   48.00000    0  458    4.00000   48.00000  1100%     -   48s
H    0     0                      10.0000000   48.00000   380%     -   48s

Cutting planes:
  Cover: 55
  MIR: 288

Explored 1 nodes (92891 simplex iterations) in 50.03 seconds (37.63 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 4 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.800000000000e+01, gap 380.0000%

Wrote result file './lp_solutions/grafo2510.48.sol'

