
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:53:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4018.48.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/grafo4018.48.lp
Reading time = 0.21 seconds
: 101368 rows, 2738 columns, 306283 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 101368 rows, 2738 columns and 306283 nonzeros
Model fingerprint: 0xc392d48b
Variable types: 51 continuous, 2687 integer (2687 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 15012 rows and 1 columns
Presolve time: 0.85s
Presolved: 86356 rows, 2737 columns, 261643 nonzeros
Variable types: 0 continuous, 2737 integer (2686 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2698 rows, 89054 columns, 264380 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15595    5.0938821e+01   0.000000e+00   9.989783e+04      5s
   30225    5.0916270e+01   0.000000e+00   3.514463e+04     10s
   44085    5.0906485e+01   0.000000e+00   1.058824e+04     15s
   57560    5.0900835e+01   0.000000e+00   3.902956e+04     20s
   71805    5.0898160e+01   0.000000e+00   1.868750e+03     25s
   81942    5.1000000e+01   0.000000e+00   0.000000e+00     29s
   81942    5.1000000e+01   0.000000e+00   0.000000e+00     29s
   81942    5.1000000e+01   0.000000e+00   0.000000e+00     29s

Root relaxation: objective 5.100000e+01, 81942 iterations, 28.01 seconds (16.42 work units)

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

     0     0   51.00000    0 1717   11.00000   51.00000   364%     -   50s

Explored 1 nodes (94639 simplex iterations) in 50.03 seconds (33.24 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 2 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.100000000000e+01, gap 363.6364%

Wrote result file './lp_solutions/grafo4018.48.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:30:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4018.48.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/grafo4018.48.lp
Reading time = 0.16 seconds
: 101368 rows, 2738 columns, 306283 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 101368 rows, 2738 columns and 306283 nonzeros
Model fingerprint: 0xc392d48b
Variable types: 51 continuous, 2687 integer (2687 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 15012 rows and 1 columns
Presolve time: 0.57s
Presolved: 86356 rows, 2737 columns, 261643 nonzeros
Variable types: 0 continuous, 2737 integer (2686 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2698 rows, 89054 columns, 264380 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21370    5.0926991e+01   0.000000e+00   7.002081e+04      5s
   41005    5.0908178e+01   0.000000e+00   1.120310e+04     10s
   59870    5.0900214e+01   0.000000e+00   1.189890e+04     15s
   79120    5.0897671e+01   0.000000e+00   4.738906e+02     20s
   81942    5.1000000e+01   0.000000e+00   0.000000e+00     21s
   81942    5.1000000e+01   0.000000e+00   0.000000e+00     21s
   81942    5.1000000e+01   0.000000e+00   0.000000e+00     21s

Root relaxation: objective 5.100000e+01, 81942 iterations, 20.11 seconds (16.42 work units)
Total elapsed time = 40.02s (DegenMoves)
Total elapsed time = 45.78s (DegenMoves)

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

     0     0   51.00000    0  675   11.00000   51.00000   364%     -   46s
H    0     0                      12.0000000   51.00000   325%     -   46s
     0     0          -    0        12.00000   51.00000   325%     -   50s

Cutting planes:
  Gomory: 39
  Cover: 52
  Clique: 3
  MIR: 159
  Zero half: 14
  RLT: 45
  BQP: 3

Explored 1 nodes (105751 simplex iterations) in 50.02 seconds (48.09 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 11 2 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.100000000000e+01, gap 325.0000%

Wrote result file './lp_solutions/grafo4018.48.sol'

