
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 09:59:55 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7274.38.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/grafo7274.38.lp
Reading time = 0.21 seconds
: 113153 rows, 2391 columns, 341692 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 113153 rows, 2391 columns and 341692 nonzeros
Model fingerprint: 0xf1ab6643
Variable types: 51 continuous, 2340 integer (2340 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 1.0000000
Presolve removed 31696 rows and 33 columns
Presolve time: 0.90s
Presolved: 81457 rows, 2358 columns, 247149 nonzeros
Variable types: 0 continuous, 2358 integer (2307 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2355 rows, 83812 columns, 249507 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19239    5.6864426e+01   0.000000e+00   2.385788e+05      5s
   39983    5.6768133e+01   0.000000e+00   1.378606e+05     10s
   60311    5.6755370e+01   0.000000e+00   4.540102e+02     15s
   63766    5.7000000e+01   0.000000e+00   0.000000e+00     16s
   63766    5.7000000e+01   0.000000e+00   0.000000e+00     16s
   63766    5.7000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.700000e+01, 63766 iterations, 15.00 seconds (9.93 work units)
Total elapsed time = 32.82s (DegenMoves)
Total elapsed time = 39.63s (DegenMoves)
Total elapsed time = 41.75s (DegenMoves)

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

     0     0   57.00000    0  671    5.00000   57.00000  1040%     -   43s
H    0     0                       7.0000000   57.00000   714%     -   43s
     0     0          -    0         7.00000   57.00000   714%     -   50s

Cutting planes:
  Gomory: 40
  Cover: 44
  Clique: 12
  MIR: 140
  GUB cover: 5
  Zero half: 19
  RLT: 47

Explored 1 nodes (86121 simplex iterations) in 50.02 seconds (46.24 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 7 5 1 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.700000000000e+01, gap 714.2857%

Wrote result file './lp_solutions/grafo7274.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 02:55:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7274.38.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/grafo7274.38.lp
Reading time = 0.18 seconds
: 113153 rows, 2391 columns, 341692 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 113153 rows, 2391 columns and 341692 nonzeros
Model fingerprint: 0xf1ab6643
Variable types: 51 continuous, 2340 integer (2340 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 1.0000000
Presolve removed 31696 rows and 33 columns
Presolve time: 0.77s
Presolved: 81457 rows, 2358 columns, 247149 nonzeros
Variable types: 0 continuous, 2358 integer (2307 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2355 rows, 83812 columns, 249507 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21824    5.6838379e+01   0.000000e+00   7.381164e+04      5s
   45065    5.6762170e+01   0.000000e+00   9.099216e+03     10s
   63766    5.7000000e+01   0.000000e+00   0.000000e+00     14s
   63766    5.7000000e+01   0.000000e+00   0.000000e+00     14s
   63766    5.7000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 5.700000e+01, 63766 iterations, 13.21 seconds (9.93 work units)
Total elapsed time = 28.75s (DegenMoves)
Total elapsed time = 34.76s (DegenMoves)
Total elapsed time = 36.62s (DegenMoves)

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

     0     0   57.00000    0  671    5.00000   57.00000  1040%     -   37s
H    0     0                       7.0000000   57.00000   714%     -   38s
     0     0          -    0         7.00000   57.00000   714%     -   50s

Cutting planes:
  Gomory: 40
  Cover: 44
  Clique: 12
  MIR: 140
  GUB cover: 5
  Zero half: 19
  RLT: 47

Explored 1 nodes (89721 simplex iterations) in 50.01 seconds (52.45 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 7 5 1 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.700000000000e+01, gap 714.2857%

Wrote result file './lp_solutions/grafo7274.38.sol'

