
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:07:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2656.49.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/grafo2656.49.lp
Reading time = 0.19 seconds
: 96348 rows, 2764 columns, 291239 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 96348 rows, 2764 columns and 291239 nonzeros
Model fingerprint: 0x74712743
Variable types: 51 continuous, 2713 integer (2713 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 10749 rows and 33 columns
Presolve time: 0.86s
Presolved: 85599 rows, 2731 columns, 259353 nonzeros
Variable types: 0 continuous, 2731 integer (2680 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2731 rows, 88330 columns, 262084 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14932    5.0967957e+01   0.000000e+00   7.392819e+04      5s
   30066    5.0947068e+01   0.000000e+00   2.370477e+04     10s
   44826    5.0936347e+01   0.000000e+00   9.861553e+03     15s
   57786    5.0932101e+01   0.000000e+00   4.671335e+03     20s
   71106    5.0931096e+01   0.000000e+00   5.604297e+01     25s
   75714    5.1000000e+01   0.000000e+00   0.000000e+00     27s
   75714    5.1000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 5.100000e+01, 75714 iterations, 25.80 seconds (17.09 work units)
Total elapsed time = 44.89s (DegenMoves)
Total elapsed time = 45.94s (DegenMoves)

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

     0     0   51.00000    0  542    7.00000   51.00000   629%     -   48s
H    0     0                      10.0000000   51.00000   410%     -   49s

Cutting planes:
  Cover: 47
  Clique: 2
  MIR: 249
  GUB cover: 5

Explored 1 nodes (91955 simplex iterations) in 50.04 seconds (36.78 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 5.100000000000e+01, gap 410.0000%

Wrote result file './lp_solutions/grafo2656.49.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:43:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2656.49.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/grafo2656.49.lp
Reading time = 0.15 seconds
: 96348 rows, 2764 columns, 291239 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 96348 rows, 2764 columns and 291239 nonzeros
Model fingerprint: 0x74712743
Variable types: 51 continuous, 2713 integer (2713 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 10749 rows and 33 columns
Presolve time: 0.63s
Presolved: 85599 rows, 2731 columns, 259353 nonzeros
Variable types: 0 continuous, 2731 integer (2680 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2731 rows, 88330 columns, 262084 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20341    5.0958591e+01   0.000000e+00   5.535574e+04      5s
   40506    5.0938991e+01   0.000000e+00   3.840835e+04     10s
   59946    5.0931719e+01   0.000000e+00   2.524989e+03     15s
   75714    5.1000000e+01   0.000000e+00   0.000000e+00     19s
   75714    5.1000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.100000e+01, 75714 iterations, 18.50 seconds (17.09 work units)
Total elapsed time = 34.08s (DegenMoves)
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   51.00000    0  542    7.00000   51.00000   629%     -   36s
H    0     0                      10.0000000   51.00000   410%     -   36s
     0     0   51.00000    0  820   10.00000   51.00000   410%     -   48s
H    0     0                      14.0000000   51.00000   264%     -   49s
     0     0          -    0        14.00000   51.00000   264%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 1
  Clique: 2
  MIR: 70
  GUB cover: 1
  Zero half: 4
  RLT: 38

Explored 1 nodes (99638 simplex iterations) in 50.03 seconds (48.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 10 7 

Time limit reached
Best objective 1.400000000000e+01, best bound 5.100000000000e+01, gap 264.2857%

Wrote result file './lp_solutions/grafo2656.49.sol'

