
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:07:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1488.48.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/grafo1488.48.lp
Reading time = 0.19 seconds
: 104064 rows, 2740 columns, 314444 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 104064 rows, 2740 columns and 314444 nonzeros
Model fingerprint: 0xf70e44b6
Variable types: 51 continuous, 2689 integer (2689 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]
Presolve removed 16018 rows and 45 columns
Presolve time: 1.14s
Presolved: 88046 rows, 2695 columns, 266809 nonzeros
Variable types: 0 continuous, 2695 integer (2644 binary)
Root relaxation presolved: 2695 rows, 90741 columns, 269504 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14704    4.3929782e+01   0.000000e+00   5.234385e+04      5s
   31265    4.3916811e+01   0.000000e+00   2.741438e+02     10s
   42736    4.4000000e+01   0.000000e+00   0.000000e+00     14s
   42736    4.4000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.400000e+01, 42736 iterations, 12.50 seconds (8.12 work units)
Total elapsed time = 25.70s (DegenMoves)

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

     0     0   44.00000    0  471          -   44.00000      -     -   27s
H    0     0                       5.0000000   44.00000   780%     -   30s
     0     0   44.00000    0  654    5.00000   44.00000   780%     -   39s
H    0     0                      13.0000000   44.00000   238%     -   40s
     0     0   44.00000    0  625   13.00000   44.00000   238%     -   42s
     0     0          -    0        13.00000   44.00000   238%     -   50s

Cutting planes:
  Gomory: 8
  Lift-and-project: 33
  Cover: 25
  Clique: 8
  MIR: 144
  StrongCG: 2
  GUB cover: 2
  Zero half: 28
  RLT: 55
  BQP: 3

Explored 1 nodes (62950 simplex iterations) in 50.04 seconds (33.95 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 5 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.400000000000e+01, gap 238.4615%

Wrote result file './lp_solutions/grafo1488.48.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:27:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1488.48.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/grafo1488.48.lp
Reading time = 0.16 seconds
: 104064 rows, 2740 columns, 314444 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 104064 rows, 2740 columns and 314444 nonzeros
Model fingerprint: 0xf70e44b6
Variable types: 51 continuous, 2689 integer (2689 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]
Presolve removed 16018 rows and 45 columns
Presolve time: 0.75s
Presolved: 88046 rows, 2695 columns, 266809 nonzeros
Variable types: 0 continuous, 2695 integer (2644 binary)
Root relaxation presolved: 2695 rows, 90741 columns, 269504 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22019    4.3920235e+01   0.000000e+00   1.110969e+04      5s
   42736    4.4000000e+01   0.000000e+00   0.000000e+00     10s
   42736    4.4000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.400000e+01, 42736 iterations, 8.87 seconds (8.12 work units)
Total elapsed time = 10.04s (DegenMoves)
Total elapsed time = 19.00s (DegenMoves)

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

     0     0   44.00000    0  471          -   44.00000      -     -   19s
H    0     0                       5.0000000   44.00000   780%     -   22s
     0     0   44.00000    0  654    5.00000   44.00000   780%     -   29s
H    0     0                      13.0000000   44.00000   238%     -   29s
     0     0   44.00000    0  625   13.00000   44.00000   238%     -   30s
     0     0   44.00000    0  648   13.00000   44.00000   238%     -   50s

Cutting planes:
  Gomory: 8
  Lift-and-project: 33
  Cover: 25
  Clique: 8
  MIR: 144
  StrongCG: 2
  GUB cover: 2
  Zero half: 28
  RLT: 55
  BQP: 3

Explored 1 nodes (75895 simplex iterations) in 50.03 seconds (48.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 5 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.400000000000e+01, gap 238.4615%

Wrote result file './lp_solutions/grafo1488.48.sol'

