
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:35:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2031.34.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/grafo2031.34.lp
Reading time = 0.07 seconds
: 38761 rows, 1436 columns, 117315 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 38761 rows, 1436 columns and 117315 nonzeros
Model fingerprint: 0xb560409c
Variable types: 37 continuous, 1399 integer (1399 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 6878 rows and 39 columns
Presolve time: 0.37s
Presolved: 31883 rows, 1397 columns, 97060 nonzeros
Variable types: 0 continuous, 1397 integer (1360 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 18129 rows, 15151 columns, 69552 nonzeros


Root relaxation: objective 3.000000e+01, 3061 iterations, 1.62 seconds (1.07 work units)
Total elapsed time = 5.31s (DegenMoves)

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

     0     0   30.00000    0  480    7.00000   30.00000   329%     -    6s
H    0     0                      10.0000000   30.00000   200%     -    6s
     0     0   30.00000    0  646   10.00000   30.00000   200%     -   15s
H    0     0                      11.0000000   30.00000   173%     -   15s
     0     0   30.00000    0  591   11.00000   30.00000   173%     -   15s
     0     0   30.00000    0  533   11.00000   30.00000   173%     -   35s
     0     0   30.00000    0  550   11.00000   30.00000   173%     -   36s
     0     0   30.00000    0  395   11.00000   30.00000   173%     -   47s
     0     0   30.00000    0  358   11.00000   30.00000   173%     -   48s
     0     0          -    0        11.00000   30.00000   173%     -   50s

Cutting planes:
  Cover: 34
  MIR: 113
  GUB cover: 6
  Zero half: 65
  RLT: 46

Explored 1 nodes (47801 simplex iterations) in 50.05 seconds (31.62 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 11 10 7 -0 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.000000000000e+01, gap 172.7273%

Wrote result file './lp_solutions/grafo2031.34.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 05:17:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2031.34.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/grafo2031.34.lp
Reading time = 0.06 seconds
: 38761 rows, 1436 columns, 117315 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 38761 rows, 1436 columns and 117315 nonzeros
Model fingerprint: 0xb560409c
Variable types: 37 continuous, 1399 integer (1399 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 6878 rows and 39 columns
Presolve time: 0.26s
Presolved: 31883 rows, 1397 columns, 97060 nonzeros
Variable types: 0 continuous, 1397 integer (1360 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 18129 rows, 15151 columns, 69552 nonzeros


Root relaxation: objective 3.000000e+01, 3061 iterations, 1.14 seconds (1.07 work units)

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

     0     0   30.00000    0  480    7.00000   30.00000   329%     -    4s
H    0     0                      10.0000000   30.00000   200%     -    4s
     0     0   30.00000    0  646   10.00000   30.00000   200%     -   10s
H    0     0                      11.0000000   30.00000   173%     -   10s
     0     0   30.00000    0  591   11.00000   30.00000   173%     -   10s
     0     0   30.00000    0  533   11.00000   30.00000   173%     -   25s
     0     0   30.00000    0  550   11.00000   30.00000   173%     -   25s
     0     0   30.00000    0  395   11.00000   30.00000   173%     -   33s
     0     0   30.00000    0  358   11.00000   30.00000   173%     -   34s
     0     0   30.00000    0  282   11.00000   30.00000   173%     -   37s
     0     0   30.00000    0  380   11.00000   30.00000   173%     -   38s
     0     0   30.00000    0  248   11.00000   30.00000   173%     -   44s
     0     0   30.00000    0  242   11.00000   30.00000   173%     -   44s
H    0     0                      12.0000000   30.00000   150%     -   47s
     0     0   30.00000    0  303   12.00000   30.00000   150%     -   47s
     0     0   30.00000    0  266   12.00000   30.00000   150%     -   47s
     0     0   30.00000    0  391   12.00000   30.00000   150%     -   50s

Cutting planes:
  Gomory: 3
  Cover: 23
  MIR: 109
  StrongCG: 2
  GUB cover: 8
  Zero half: 11
  RLT: 40

Explored 1 nodes (76773 simplex iterations) in 50.04 seconds (46.02 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 12 11 10 ... -0

Time limit reached
Best objective 1.200000000000e+01, best bound 3.000000000000e+01, gap 150.0000%

Wrote result file './lp_solutions/grafo2031.34.sol'

