
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 07:29:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5312.39.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/grafo5312.39.lp
Reading time = 0.19 seconds
: 96765 rows, 2059 columns, 291963 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 96765 rows, 2059 columns and 291963 nonzeros
Model fingerprint: 0x19d1138b
Variable types: 44 continuous, 2015 integer (2015 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 1.0000000
Presolve removed 30113 rows and 12 columns
Presolve time: 1.00s
Presolved: 66652 rows, 2047 columns, 201961 nonzeros
Variable types: 0 continuous, 2047 integer (2003 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2047 rows, 68699 columns, 204008 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19231    5.5851666e+01   0.000000e+00   3.981938e+04      5s
   36910    5.6000000e+01   0.000000e+00   0.000000e+00      9s
   36910    5.6000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 5.600000e+01, 36910 iterations, 8.12 seconds (4.57 work units)
Total elapsed time = 26.63s (DegenMoves)

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

     0     0   56.00000    0  970   10.00000   56.00000   460%     -   50s

Explored 1 nodes (69553 simplex iterations) in 50.16 seconds (52.16 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 1 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.600000000000e+01, gap 460.0000%

Wrote result file './lp_solutions/grafo5312.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:21:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5312.39.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/grafo5312.39.lp
Reading time = 0.15 seconds
: 96765 rows, 2059 columns, 291963 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 96765 rows, 2059 columns and 291963 nonzeros
Model fingerprint: 0x19d1138b
Variable types: 44 continuous, 2015 integer (2015 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 1.0000000
Presolve removed 30113 rows and 12 columns
Presolve time: 0.63s
Presolved: 66652 rows, 2047 columns, 201961 nonzeros
Variable types: 0 continuous, 2047 integer (2003 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2047 rows, 68699 columns, 204008 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27415    5.5841801e+01   0.000000e+00   2.191174e+03      5s
   36910    5.6000000e+01   0.000000e+00   0.000000e+00      7s
   36910    5.6000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 5.600000e+01, 36910 iterations, 5.99 seconds (4.57 work units)
Total elapsed time = 20.77s (DegenMoves)

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

     0     0   56.00000    0  970   10.00000   56.00000   460%     -   39s
H    0     0                      11.0000000   56.00000   409%     -   39s
     0     0          -    0        11.00000   56.00000   409%     -   50s

Cutting planes:
  Gomory: 15
  Cover: 20
  Clique: 30
  MIR: 107
  GUB cover: 2
  Zero half: 18
  RLT: 68
  BQP: 6

Explored 1 nodes (73499 simplex iterations) in 50.10 seconds (59.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 10 1 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.600000000000e+01, gap 409.0909%

Wrote result file './lp_solutions/grafo5312.39.sol'

