
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov  1 21:09:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10012.40.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/grafo10012.40.lp
Reading time = 0.28 seconds
: 90485 rows, 2204 columns, 273333 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 90485 rows, 2204 columns and 273333 nonzeros
Model fingerprint: 0xb9c0b56b
Variable types: 46 continuous, 2158 integer (2158 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 2.0000000
Presolve removed 23067 rows and 9 columns
Presolve time: 0.98s
Presolved: 67418 rows, 2195 columns, 204667 nonzeros
Variable types: 0 continuous, 2195 integer (2149 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2183 rows, 69601 columns, 206862 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13631    4.6751623e+01   0.000000e+00   3.728082e+04      5s
   29335    4.6729115e+01   0.000000e+00   1.046716e+03     10s
   39436    4.7000000e+01   0.000000e+00   0.000000e+00     14s
   39436    4.7000000e+01   0.000000e+00   0.000000e+00     14s
   39436    4.7000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.700000e+01, 39436 iterations, 12.44 seconds (6.33 work units)
Total elapsed time = 28.61s (DegenMoves)
Total elapsed time = 31.18s (DegenMoves)

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

     0     0   47.00000    0  512   10.00000   47.00000   370%     -   34s
     0     0          -    0        10.00000   47.00000   370%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 31
  Clique: 6
  MIR: 177
  GUB cover: 1
  Zero half: 77
  RLT: 58
  BQP: 1

Explored 1 nodes (57264 simplex iterations) in 50.10 seconds (26.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 2 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.700000000000e+01, gap 370.0000%

Wrote result file './lp_solutions/grafo10012.40.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:46:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10012.40.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/grafo10012.40.lp
Reading time = 0.14 seconds
: 90485 rows, 2204 columns, 273333 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 90485 rows, 2204 columns and 273333 nonzeros
Model fingerprint: 0xb9c0b56b
Variable types: 46 continuous, 2158 integer (2158 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 2.0000000
Presolve removed 23067 rows and 9 columns
Presolve time: 0.55s
Presolved: 67418 rows, 2195 columns, 204667 nonzeros
Variable types: 0 continuous, 2195 integer (2149 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2183 rows, 69601 columns, 206862 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24535    4.6731609e+01   0.000000e+00   2.741669e+03      5s
   39436    4.7000000e+01   0.000000e+00   0.000000e+00      8s
   39436    4.7000000e+01   0.000000e+00   0.000000e+00      8s
   39436    4.7000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.700000e+01, 39436 iterations, 7.37 seconds (6.33 work units)
Total elapsed time = 17.38s (DegenMoves)
Total elapsed time = 20.06s (DegenMoves)

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

     0     0   47.00000    0  512   10.00000   47.00000   370%     -   20s
H    0     0                      11.0000000   47.00000   327%     -   33s
     0     0   47.00000    0  827   11.00000   47.00000   327%     -   33s
     0     0   47.00000    0  797   11.00000   47.00000   327%     -   34s
H    0     0                      12.0000000   47.00000   292%     -   41s
     0     0   47.00000    0  817   12.00000   47.00000   292%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 36
  Cover: 9
  Clique: 6
  MIR: 136
  StrongCG: 1
  Zero half: 38
  RLT: 45
  BQP: 1

Explored 1 nodes (68451 simplex iterations) in 50.07 seconds (45.22 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 11 10 2 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.700000000000e+01, gap 291.6667%

Wrote result file './lp_solutions/grafo10012.40.sol'

