
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 09:46:30 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6123.38.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/grafo6123.38.lp
Reading time = 0.13 seconds
: 70813 rows, 2139 columns, 214357 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 70813 rows, 2139 columns and 214357 nonzeros
Model fingerprint: 0xf0ce641e
Variable types: 48 continuous, 2091 integer (2091 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 3.0000000
Presolve removed 11619 rows and 38 columns
Presolve time: 0.53s
Presolved: 59194 rows, 2101 columns, 179949 nonzeros
Variable types: 0 continuous, 2101 integer (2053 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2101 rows, 61295 columns, 182050 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24390    4.5930883e+01   0.000000e+00   2.577396e+03      5s
   33986    4.6000000e+01   0.000000e+00   0.000000e+00      7s
   33986    4.6000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.600000e+01, 33986 iterations, 6.56 seconds (4.78 work units)
Total elapsed time = 18.29s (DegenMoves)
Total elapsed time = 21.49s (DegenMoves)
Total elapsed time = 25.23s (DegenMoves)

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

     0     0   46.00000    0  547    9.00000   46.00000   411%     -   25s
H    0     0                      11.0000000   46.00000   318%     -   25s
     0     0   46.00000    0  789   11.00000   46.00000   318%     -   38s
H    0     0                      13.0000000   46.00000   254%     -   41s
     0     0   46.00000    0  670   13.00000   46.00000   254%     -   42s
     0     0          -    0        13.00000   46.00000   254%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 26
  Cover: 11
  MIR: 133
  GUB cover: 3
  Zero half: 16
  RLT: 51

Explored 1 nodes (62518 simplex iterations) in 50.07 seconds (40.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 13 11 9 3 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.600000000000e+01, gap 253.8462%

Wrote result file './lp_solutions/grafo6123.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 02:41:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6123.38.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/grafo6123.38.lp
Reading time = 0.11 seconds
: 70813 rows, 2139 columns, 214357 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 70813 rows, 2139 columns and 214357 nonzeros
Model fingerprint: 0xf0ce641e
Variable types: 48 continuous, 2091 integer (2091 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 3.0000000
Presolve removed 11619 rows and 38 columns
Presolve time: 0.46s
Presolved: 59194 rows, 2101 columns, 179949 nonzeros
Variable types: 0 continuous, 2101 integer (2053 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2101 rows, 61295 columns, 182050 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27566    4.5929988e+01   0.000000e+00   6.396289e+02      5s
   33986    4.6000000e+01   0.000000e+00   0.000000e+00      6s
   33986    4.6000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.600000e+01, 33986 iterations, 5.73 seconds (4.78 work units)
Total elapsed time = 16.03s (DegenMoves)
Total elapsed time = 20.94s (DegenMoves)

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

     0     0   46.00000    0  547    9.00000   46.00000   411%     -   22s
H    0     0                      11.0000000   46.00000   318%     -   22s
     0     0   46.00000    0  789   11.00000   46.00000   318%     -   33s
H    0     0                      13.0000000   46.00000   254%     -   36s
     0     0   46.00000    0  670   13.00000   46.00000   254%     -   37s
     0     0   46.00000    0  761   13.00000   46.00000   254%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 26
  Cover: 11
  MIR: 133
  GUB cover: 3
  Zero half: 16
  RLT: 51

Explored 1 nodes (68312 simplex iterations) in 50.08 seconds (46.47 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 13 11 9 3 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.600000000000e+01, gap 253.8462%

Wrote result file './lp_solutions/grafo6123.38.sol'

