
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:45:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2181.41.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/grafo2181.41.lp
Reading time = 0.15 seconds
: 65225 rows, 2125 columns, 197402 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 65225 rows, 2125 columns and 197402 nonzeros
Model fingerprint: 0xe0a6d78c
Variable types: 46 continuous, 2079 integer (2079 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 -0.0000000
Presolve removed 8155 rows and 0 columns
Presolve time: 0.66s
Presolved: 57070 rows, 2125 columns, 173338 nonzeros
Variable types: 0 continuous, 2125 integer (2079 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2080 rows, 59150 columns, 175463 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20375    3.6959213e+01   0.000000e+00   1.568220e+03      5s
   35951    3.7000000e+01   0.000000e+00   0.000000e+00      9s
   35951    3.7000000e+01   0.000000e+00   0.000000e+00      9s
   35951    3.7000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 3.700000e+01, 35951 iterations, 8.34 seconds (4.92 work units)
Total elapsed time = 18.53s (DegenMoves)

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

     0     0   37.00000    0  476    8.00000   37.00000   362%     -   20s
H    0     0                      11.0000000   37.00000   236%     -   20s
     0     0   37.00000    0  735   11.00000   37.00000   236%     -   30s
     0     0   37.00000    0  738   11.00000   37.00000   236%     -   31s
     0     0   37.00000    0  838   11.00000   37.00000   236%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 18
  Cover: 6
  MIR: 125
  Zero half: 81
  RLT: 66

Explored 1 nodes (62248 simplex iterations) in 50.07 seconds (30.64 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 8 -0 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.700000000000e+01, gap 236.3636%

Wrote result file './lp_solutions/grafo2181.41.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:47:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2181.41.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/grafo2181.41.lp
Reading time = 0.10 seconds
: 65225 rows, 2125 columns, 197402 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 65225 rows, 2125 columns and 197402 nonzeros
Model fingerprint: 0xe0a6d78c
Variable types: 46 continuous, 2079 integer (2079 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 -0.0000000
Presolve removed 8155 rows and 0 columns
Presolve time: 0.35s
Presolved: 57070 rows, 2125 columns, 173338 nonzeros
Variable types: 0 continuous, 2125 integer (2079 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2080 rows, 59150 columns, 175463 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28727    3.6957237e+01   0.000000e+00   6.438296e+02      5s
   35951    3.7000000e+01   0.000000e+00   0.000000e+00      6s
   35951    3.7000000e+01   0.000000e+00   0.000000e+00      6s
   35951    3.7000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 3.700000e+01, 35951 iterations, 5.99 seconds (4.92 work units)
Total elapsed time = 13.69s (DegenMoves)

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

     0     0   37.00000    0  476    8.00000   37.00000   362%     -   14s
H    0     0                      11.0000000   37.00000   236%     -   14s
     0     0   37.00000    0  735   11.00000   37.00000   236%     -   21s
     0     0   37.00000    0  738   11.00000   37.00000   236%     -   22s
H    0     0                      12.0000000   37.00000   208%     -   45s
     0     0   37.00000    0  530   12.00000   37.00000   208%     -   45s
H    0     0                      13.0000000   37.00000   185%     -   45s
     0     0   37.00000    0  495   13.00000   37.00000   185%     -   46s
     0     0          -    0        13.00000   37.00000   185%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 2
  Cover: 27
  MIR: 113
  Zero half: 42
  RLT: 60

Explored 1 nodes (76688 simplex iterations) in 50.05 seconds (45.31 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 13 12 11 ... -0

Time limit reached
Best objective 1.300000000000e+01, best bound 3.700000000000e+01, gap 184.6154%

Wrote result file './lp_solutions/grafo2181.41.sol'

