
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:42:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3916.40.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/grafo3916.40.lp
Reading time = 0.16 seconds
: 81646 rows, 2174 columns, 246749 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 81646 rows, 2174 columns and 246749 nonzeros
Model fingerprint: 0x119b52b9
Variable types: 47 continuous, 2127 integer (2127 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 -0.0000000
Presolve removed 17302 rows and 39 columns
Presolve time: 0.86s
Presolved: 64344 rows, 2135 columns, 195256 nonzeros
Variable types: 0 continuous, 2135 integer (2088 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2135 rows, 66479 columns, 197391 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18631    4.6767247e+01   0.000000e+00   2.508151e+04      5s
   37831    4.6755679e+01   0.000000e+00   7.108335e+02     10s
   47156    4.7000000e+01   0.000000e+00   0.000000e+00     13s
   47156    4.7000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.700000e+01, 47156 iterations, 11.67 seconds (6.41 work units)
Total elapsed time = 25.31s (DegenMoves)

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

     0     0   47.00000    0  620    5.00000   47.00000   840%     -   30s
H    0     0                       6.0000000   47.00000   683%     -   30s
H    0     0                       7.0000000   47.00000   571%     -   30s
     0     0          -    0         7.00000   47.00000   571%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 29
  Clique: 5
  MIR: 125
  GUB cover: 11
  Zero half: 19
  RLT: 52

Explored 1 nodes (70299 simplex iterations) in 50.08 seconds (34.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 7 6 5 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.700000000000e+01, gap 571.4286%

Wrote result file './lp_solutions/grafo3916.40.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:11:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3916.40.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/grafo3916.40.lp
Reading time = 0.13 seconds
: 81646 rows, 2174 columns, 246749 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 81646 rows, 2174 columns and 246749 nonzeros
Model fingerprint: 0x119b52b9
Variable types: 47 continuous, 2127 integer (2127 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 -0.0000000
Presolve removed 17302 rows and 39 columns
Presolve time: 0.56s
Presolved: 64344 rows, 2135 columns, 195256 nonzeros
Variable types: 0 continuous, 2135 integer (2088 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2135 rows, 66479 columns, 197391 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26631    4.6760034e+01   0.000000e+00   5.045413e+03      5s
   47156    4.7000000e+01   0.000000e+00   0.000000e+00      9s
   47156    4.7000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.700000e+01, 47156 iterations, 8.24 seconds (6.41 work units)
Total elapsed time = 18.67s (DegenMoves)
Total elapsed time = 20.49s (DegenMoves)

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

     0     0   47.00000    0  620    5.00000   47.00000   840%     -   22s
H    0     0                       6.0000000   47.00000   683%     -   22s
H    0     0                       7.0000000   47.00000   571%     -   22s
     0     0   47.00000    0 1075    7.00000   47.00000   571%     -   41s
     0     0   47.00000    0 1024    7.00000   47.00000   571%     -   43s
     0     0          -    0         7.00000   47.00000   571%     -   50s

Cutting planes:
  Gomory: 3
  Cover: 2
  Clique: 5
  MIR: 159
  Zero half: 64
  RLT: 70
  BQP: 1

Explored 1 nodes (77350 simplex iterations) in 50.08 seconds (45.83 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 7 6 5 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.700000000000e+01, gap 571.4286%

Wrote result file './lp_solutions/grafo3916.40.sol'

