
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:04:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3469.47.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/grafo3469.47.lp
Reading time = 0.20 seconds
: 95630 rows, 2695 columns, 289193 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 95630 rows, 2695 columns and 289193 nonzeros
Model fingerprint: 0xc1381a41
Variable types: 52 continuous, 2643 integer (2643 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 10847 rows and 2 columns
Presolve time: 0.77s
Presolved: 84783 rows, 2693 columns, 256938 nonzeros
Variable types: 0 continuous, 2693 integer (2641 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2654 rows, 87437 columns, 259631 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14288    3.9950244e+01   0.000000e+00   4.096781e+04      5s
   30845    3.9916360e+01   0.000000e+00   1.414481e+04     10s
   45090    3.9910321e+01   0.000000e+00   4.206667e+04     15s
   54712    4.0000000e+01   0.000000e+00   0.000000e+00     18s
   54712    4.0000000e+01   0.000000e+00   0.000000e+00     18s
   54712    4.0000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.000000e+01, 54712 iterations, 17.52 seconds (10.55 work units)
Total elapsed time = 29.89s (DegenMoves)
Total elapsed time = 31.07s (DegenMoves)

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

     0     0   40.00000    0  487    7.00000   40.00000   471%     -   33s
H    0     0                       9.0000000   40.00000   344%     -   33s
     0     0          -    0         9.00000   40.00000   344%     -   50s

Cutting planes:
  Gomory: 37
  Cover: 32
  Clique: 6
  MIR: 107
  StrongCG: 2
  Zero half: 65
  RLT: 58
  BQP: 1

Explored 1 nodes (75227 simplex iterations) in 50.02 seconds (36.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.000000000000e+01, gap 344.4444%

Wrote result file './lp_solutions/grafo3469.47.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:12:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3469.47.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/grafo3469.47.lp
Reading time = 0.15 seconds
: 95630 rows, 2695 columns, 289193 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 95630 rows, 2695 columns and 289193 nonzeros
Model fingerprint: 0xc1381a41
Variable types: 52 continuous, 2643 integer (2643 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 10847 rows and 2 columns
Presolve time: 0.53s
Presolved: 84783 rows, 2693 columns, 256938 nonzeros
Variable types: 0 continuous, 2693 integer (2641 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2654 rows, 87437 columns, 259631 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21218    3.9927584e+01   0.000000e+00   1.368957e+05      5s
   42780    3.9910758e+01   0.000000e+00   3.211001e+03     10s
   54712    4.0000000e+01   0.000000e+00   0.000000e+00     13s
   54712    4.0000000e+01   0.000000e+00   0.000000e+00     13s
   54712    4.0000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.000000e+01, 54712 iterations, 12.41 seconds (10.55 work units)
Total elapsed time = 22.43s (DegenMoves)

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

     0     0   40.00000    0  487    7.00000   40.00000   471%     -   24s
H    0     0                       9.0000000   40.00000   344%     -   24s
     0     0   40.00000    0  871    9.00000   40.00000   344%     -   39s
     0     0   40.00000    0  821    9.00000   40.00000   344%     -   40s
     0     0   40.00000    0  793    9.00000   40.00000   344%     -   50s

Cutting planes:
  Gomory: 9
  Lift-and-project: 32
  Cover: 16
  Clique: 6
  MIR: 106
  StrongCG: 2
  Zero half: 40
  RLT: 74
  BQP: 1

Explored 1 nodes (80047 simplex iterations) in 50.02 seconds (46.68 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.000000000000e+01, gap 344.4444%

Wrote result file './lp_solutions/grafo3469.47.sol'

