
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:41:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2081.39.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/grafo2081.39.lp
Reading time = 0.14 seconds
: 75638 rows, 2215 columns, 228848 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 75638 rows, 2215 columns and 228848 nonzeros
Model fingerprint: 0x5e5397c7
Variable types: 48 continuous, 2167 integer (2167 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 13508 rows and 40 columns
Presolve time: 0.74s
Presolved: 62130 rows, 2175 columns, 188806 nonzeros
Variable types: 0 continuous, 2175 integer (2127 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2175 rows, 64305 columns, 190981 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16911    4.5978052e+01   0.000000e+00   2.503268e+04      5s
   35636    4.5963049e+01   0.000000e+00   3.461135e+03     10s
   54071    4.5959979e+01   0.000000e+00   1.461407e+01     15s
   56442    4.6000000e+01   0.000000e+00   0.000000e+00     16s
   56442    4.6000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.600000e+01, 56442 iterations, 14.98 seconds (9.01 work units)
Total elapsed time = 28.48s (DegenMoves)
Total elapsed time = 31.07s (DegenMoves)

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

     0     0   46.00000    0  531    7.00000   46.00000   557%     -   31s
H    0     0                      12.0000000   46.00000   283%     -   32s
     0     0          -    0        12.00000   46.00000   283%     -   50s

Cutting planes:
  Gomory: 50
  Cover: 53
  Clique: 16
  MIR: 144
  GUB cover: 9
  Zero half: 48
  RLT: 51
  BQP: 2

Explored 1 nodes (79812 simplex iterations) in 50.09 seconds (33.57 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 7 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.600000000000e+01, gap 283.3333%

Wrote result file './lp_solutions/grafo2081.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:06:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2081.39.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/grafo2081.39.lp
Reading time = 0.12 seconds
: 75638 rows, 2215 columns, 228848 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 75638 rows, 2215 columns and 228848 nonzeros
Model fingerprint: 0x5e5397c7
Variable types: 48 continuous, 2167 integer (2167 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 13508 rows and 40 columns
Presolve time: 0.49s
Presolved: 62130 rows, 2175 columns, 188806 nonzeros
Variable types: 0 continuous, 2175 integer (2127 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2175 rows, 64305 columns, 190981 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26131    4.5967997e+01   0.000000e+00   3.945473e+04      5s
   50903    4.5960111e+01   0.000000e+00   1.027442e+03     10s
   56442    4.6000000e+01   0.000000e+00   0.000000e+00     11s
   56442    4.6000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.600000e+01, 56442 iterations, 10.52 seconds (9.01 work units)
Total elapsed time = 21.27s (DegenMoves)

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

     0     0   46.00000    0  531    7.00000   46.00000   557%     -   23s
H    0     0                      12.0000000   46.00000   283%     -   23s
     0     0   46.00000    0  978   12.00000   46.00000   283%     -   37s
     0     0   45.00000    0  969   12.00000   45.00000   275%     -   41s
     0     0          -    0        12.00000   45.00000   275%     -   50s

Cutting planes:
  Cover: 15
  Clique: 19
  MIR: 187
  StrongCG: 1
  GUB cover: 1
  Zero half: 78
  RLT: 70
  BQP: 2

Explored 1 nodes (85925 simplex iterations) in 50.05 seconds (43.57 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 7 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.500000000000e+01, gap 275.0000%

Wrote result file './lp_solutions/grafo2081.39.sol'

