
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 10:05:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9941.38.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/grafo9941.38.lp
Reading time = 0.12 seconds
: 51836 rows, 1833 columns, 157041 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 51836 rows, 1833 columns and 157041 nonzeros
Model fingerprint: 0xe1d3251b
Variable types: 43 continuous, 1790 integer (1790 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 5991 rows and 26 columns
Presolve time: 0.61s
Presolved: 45845 rows, 1807 columns, 139330 nonzeros
Variable types: 0 continuous, 1807 integer (1764 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 25068 rows, 22584 columns, 97776 nonzeros


Root relaxation: objective 3.400000e+01, 1230 iterations, 0.50 seconds (0.26 work units)

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

     0     0   34.00000    0  228   12.00000   34.00000   183%     -    2s
H    0     0                      13.0000000   34.00000   162%     -    2s
H    0     0                      15.0000000   34.00000   127%     -    2s
H    0     0                      16.0000000   34.00000   112%     -    5s
     0     0   34.00000    0  498   16.00000   34.00000   112%     -    5s
     0     0   34.00000    0  446   16.00000   34.00000   112%     -    7s

Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:01:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9941.38.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/grafo9941.38.lp
Reading time = 0.08 seconds
: 51836 rows, 1833 columns, 157041 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 51836 rows, 1833 columns and 157041 nonzeros
Model fingerprint: 0xe1d3251b
Variable types: 43 continuous, 1790 integer (1790 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 5991 rows and 26 columns
Presolve time: 0.33s
Presolved: 45845 rows, 1807 columns, 139330 nonzeros
Variable types: 0 continuous, 1807 integer (1764 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 25068 rows, 22584 columns, 97776 nonzeros


Root relaxation: objective 3.400000e+01, 1230 iterations, 0.30 seconds (0.26 work units)

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

     0     0   34.00000    0  228   12.00000   34.00000   183%     -    1s
H    0     0                      13.0000000   34.00000   162%     -    1s
H    0     0                      15.0000000   34.00000   127%     -    1s
H    0     0                      16.0000000   34.00000   112%     -    3s
     0     0   34.00000    0  498   16.00000   34.00000   112%     -    3s
     0     0   34.00000    0  446   16.00000   34.00000   112%     -    3s
H    0     0                      17.0000000   34.00000   100%     -   10s
     0     0   34.00000    0  453   17.00000   34.00000   100%     -   10s
     0     0   34.00000    0  320   17.00000   34.00000   100%     -   10s
     0     0   34.00000    0  375   17.00000   34.00000   100%     -   15s
     0     0   34.00000    0  354   17.00000   34.00000   100%     -   16s
     0     0   33.77778    0  367   17.00000   33.77778  98.7%     -   22s
     0     0   33.77778    0  377   17.00000   33.77778  98.7%     -   22s
     0     0   33.77778    0  291   17.00000   33.77778  98.7%     -   28s
     0     0   33.77778    0  287   17.00000   33.77778  98.7%     -   28s
     0     0   33.77778    0  258   17.00000   33.77778  98.7%     -   30s
     0     0   33.77778    0  211   17.00000   33.77778  98.7%     -   30s
H    0     0                      18.0000000   33.77778  87.7%     -   31s
H    0     0                      19.0000000   33.77778  77.8%     -   33s
     0     2   33.77778    0  209   19.00000   33.77778  77.8%     -   34s
     7    12   33.77778    3  266   19.00000   33.77778  77.8%   546   35s
    96   104   31.00000   22  157   19.00000   33.77778  77.8%   113   41s
   190   195   29.75000   40  143   19.00000   33.77778  77.8%  94.3   45s
   343   332   26.16667   55  170   19.00000   33.77778  77.8%  96.8   50s

Cutting planes:
  Cover: 3
  Clique: 5
  MIR: 100
  StrongCG: 1
  GUB cover: 1
  Inf proof: 3
  Zero half: 3
  RLT: 46
  BQP: 1

Explored 345 nodes (79092 simplex iterations) in 50.07 seconds (49.47 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 19 18 17 ... 12

Time limit reached
Best objective 1.900000000000e+01, best bound 3.300000000000e+01, gap 73.6842%

Wrote result file './lp_solutions/grafo9941.38.sol'

