
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:27:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2941.38.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/grafo2941.38.lp
Reading time = 0.21 seconds
: 107324 rows, 2381 columns, 324191 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 107324 rows, 2381 columns and 324191 nonzeros
Model fingerprint: 0x9780c105
Variable types: 51 continuous, 2330 integer (2330 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 28413 rows and 34 columns
Presolve time: 1.09s
Presolved: 78911 rows, 2347 columns, 239439 nonzeros
Variable types: 0 continuous, 2347 integer (2296 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2347 rows, 81258 columns, 241786 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14176    5.8963854e+01   0.000000e+00   6.463330e+04      5s
   31529    5.8933826e+01   0.000000e+00   2.059081e+04     10s
   48889    5.8920946e+01   0.000000e+00   3.695864e+04     15s
   66938    5.8914441e+01   0.000000e+00   3.398768e+03     20s
   83673    5.8911088e+01   0.000000e+00   2.239287e+03     25s
  101618    5.8909456e+01   0.000000e+00   3.599880e+02     30s
  108342    5.9000000e+01   0.000000e+00   0.000000e+00     32s
  108342    5.9000000e+01   0.000000e+00   0.000000e+00     32s

Root relaxation: objective 5.900000e+01, 108342 iterations, 30.87 seconds (19.67 work units)
Total elapsed time = 49.96s (DegenMoves)

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

     0     0   59.00000    0  780    6.00000   59.00000   883%     -   50s

Explored 1 nodes (120433 simplex iterations) in 50.07 seconds (35.41 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.900000000000e+01, gap 883.3333%

Wrote result file './lp_solutions/grafo2941.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 09:18:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2941.38.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/grafo2941.38.lp
Reading time = 0.18 seconds
: 107324 rows, 2381 columns, 324191 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 107324 rows, 2381 columns and 324191 nonzeros
Model fingerprint: 0x9780c105
Variable types: 51 continuous, 2330 integer (2330 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 28413 rows and 34 columns
Presolve time: 0.79s
Presolved: 78911 rows, 2347 columns, 239439 nonzeros
Variable types: 0 continuous, 2347 integer (2296 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2347 rows, 81258 columns, 241786 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19748    5.8949901e+01   0.000000e+00   2.866248e+05      5s
   41657    5.8924992e+01   0.000000e+00   9.748224e+03     10s
   63991    5.8915114e+01   0.000000e+00   4.010181e+03     15s
   86872    5.8910712e+01   0.000000e+00   3.124494e+03     20s
  108264    5.8909287e+01   0.000000e+00   7.320939e-02     25s
  108342    5.9000000e+01   0.000000e+00   0.000000e+00     25s
  108342    5.9000000e+01   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 5.900000e+01, 108342 iterations, 24.17 seconds (19.67 work units)
Total elapsed time = 40.12s (DegenMoves)

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

     0     0   59.00000    0  615    6.00000   59.00000   883%     -   44s
H    0     0                       8.0000000   59.00000   638%     -   44s
     0     0          -    0         8.00000   59.00000   638%     -   50s

Cutting planes:
  Gomory: 45
  Cover: 49
  Clique: 14
  MIR: 207
  GUB cover: 11
  Zero half: 21
  RLT: 65
  BQP: 1

Explored 1 nodes (127410 simplex iterations) in 50.02 seconds (46.00 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 6 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.900000000000e+01, gap 637.5000%

Wrote result file './lp_solutions/grafo2941.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 02:13:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2941.38.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/grafo2941.38.lp
Reading time = 0.17 seconds
: 107324 rows, 2381 columns, 324191 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 107324 rows, 2381 columns and 324191 nonzeros
Model fingerprint: 0x9780c105
Variable types: 51 continuous, 2330 integer (2330 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 28413 rows and 34 columns
Presolve time: 0.74s
Presolved: 78911 rows, 2347 columns, 239439 nonzeros
Variable types: 0 continuous, 2347 integer (2296 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2347 rows, 81258 columns, 241786 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20746    5.8948296e+01   0.000000e+00   1.386828e+05      5s
   43795    5.8923630e+01   0.000000e+00   7.826945e+03     10s
   66938    5.8914441e+01   0.000000e+00   3.398768e+03     15s
   91098    5.8910229e+01   0.000000e+00   1.804966e+03     20s
  108342    5.9000000e+01   0.000000e+00   0.000000e+00     24s
  108342    5.9000000e+01   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 5.900000e+01, 108342 iterations, 22.85 seconds (19.67 work units)
Total elapsed time = 38.24s (DegenMoves)
Total elapsed time = 40.88s (DegenMoves)

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

     0     0   59.00000    0  615    6.00000   59.00000   883%     -   42s
H    0     0                       8.0000000   59.00000   638%     -   42s
     0     0          -    0         8.00000   59.00000   638%     -   50s

Cutting planes:
  Gomory: 45
  Cover: 49
  Clique: 14
  MIR: 207
  GUB cover: 11
  Zero half: 21
  RLT: 65
  BQP: 1

Explored 1 nodes (129177 simplex iterations) in 50.02 seconds (48.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 6 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.900000000000e+01, gap 637.5000%

Wrote result file './lp_solutions/grafo2941.38.sol'

