
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 08:06:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5555.39.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/grafo5555.39.lp
Reading time = 0.17 seconds
: 85156 rows, 2175 columns, 257317 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 85156 rows, 2175 columns and 257317 nonzeros
Model fingerprint: 0x23d96df8
Variable types: 47 continuous, 2128 integer (2128 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 20395 rows and 30 columns
Presolve time: 0.85s
Presolved: 64761 rows, 2145 columns, 196606 nonzeros
Variable types: 0 continuous, 2145 integer (2098 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2145 rows, 66906 columns, 198751 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18578    5.2752650e+01   0.000000e+00   2.270820e+04      5s
   36779    5.3000000e+01   0.000000e+00   0.000000e+00     10s
   36779    5.3000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.300000e+01, 36779 iterations, 8.68 seconds (5.14 work units)
Total elapsed time = 20.26s (DegenMoves)
Total elapsed time = 38.91s (DegenMoves)
Total elapsed time = 42.93s (DegenMoves)
Total elapsed time = 45.62s (DegenMoves)

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

     0     0   53.00000    0  541    9.00000   53.00000   489%     -   48s

Cutting planes:
  Cover: 41
  Clique: 10
  MIR: 219
  GUB cover: 5

Explored 1 nodes (72585 simplex iterations) in 50.05 seconds (46.79 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.300000000000e+01, gap 488.8889%

Wrote result file './lp_solutions/grafo5555.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:23:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5555.39.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/grafo5555.39.lp
Reading time = 0.13 seconds
: 85156 rows, 2175 columns, 257317 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 85156 rows, 2175 columns and 257317 nonzeros
Model fingerprint: 0x23d96df8
Variable types: 47 continuous, 2128 integer (2128 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 20395 rows and 30 columns
Presolve time: 0.56s
Presolved: 64761 rows, 2145 columns, 196606 nonzeros
Variable types: 0 continuous, 2145 integer (2098 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2145 rows, 66906 columns, 198751 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26258    5.2738900e+01   0.000000e+00   2.542608e+03      5s
   36779    5.3000000e+01   0.000000e+00   0.000000e+00      7s
   36779    5.3000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 5.300000e+01, 36779 iterations, 6.43 seconds (5.14 work units)
Total elapsed time = 15.46s (DegenMoves)
Total elapsed time = 30.36s (DegenMoves)
Total elapsed time = 35.37s (DegenMoves)

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

     0     0   53.00000    0  541    9.00000   53.00000   489%     -   37s
     0     0   53.00000    0  855    9.00000   53.00000   489%     -   49s
     0     0          -    0         9.00000   53.00000   489%     -   50s

Cutting planes:
  Gomory: 4
  Cover: 3
  Clique: 6
  MIR: 70
  GUB cover: 1
  Zero half: 6
  RLT: 32

Explored 1 nodes (80428 simplex iterations) in 50.08 seconds (57.26 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.300000000000e+01, gap 488.8889%

Wrote result file './lp_solutions/grafo5555.39.sol'

