
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:22:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2851.40.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/grafo2851.40.lp
Reading time = 0.17 seconds
: 91356 rows, 2168 columns, 275903 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 91356 rows, 2168 columns and 275903 nonzeros
Model fingerprint: 0x18c10675
Variable types: 47 continuous, 2121 integer (2121 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 3.0000000
Presolve removed 22713 rows and 36 columns
Presolve time: 0.98s
Presolved: 68643 rows, 2132 columns, 208114 nonzeros
Variable types: 0 continuous, 2132 integer (2085 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2132 rows, 70775 columns, 210246 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16397    4.5759005e+01   0.000000e+00   2.057091e+04      5s
   34251    4.6000000e+01   0.000000e+00   0.000000e+00     10s
   34251    4.6000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.600000e+01, 34251 iterations, 8.57 seconds (5.70 work units)
Total elapsed time = 20.57s (DegenMoves)

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

     0     0   46.00000    0  447    7.00000   46.00000   557%     -   23s
H    0     0                       9.0000000   46.00000   411%     -   23s
     0     0   46.00000    0  694    9.00000   46.00000   411%     -   34s
     0     0   46.00000    0  629    9.00000   46.00000   411%     -   38s
     0     0          -    0         9.00000   46.00000   411%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 28
  Cover: 11
  Clique: 13
  MIR: 139
  StrongCG: 1
  GUB cover: 3
  Zero half: 9
  RLT: 60
  BQP: 1

Explored 1 nodes (53695 simplex iterations) in 50.09 seconds (31.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 3 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.600000000000e+01, gap 411.1111%

Wrote result file './lp_solutions/grafo2851.40.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:00:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2851.40.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/grafo2851.40.lp
Reading time = 0.15 seconds
: 91356 rows, 2168 columns, 275903 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 91356 rows, 2168 columns and 275903 nonzeros
Model fingerprint: 0x18c10675
Variable types: 47 continuous, 2121 integer (2121 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 3.0000000
Presolve removed 22713 rows and 36 columns
Presolve time: 0.65s
Presolved: 68643 rows, 2132 columns, 208114 nonzeros
Variable types: 0 continuous, 2132 integer (2085 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2132 rows, 70775 columns, 210246 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24845    4.5741361e+01   0.000000e+00   1.538001e+03      5s
   34251    4.6000000e+01   0.000000e+00   0.000000e+00      7s
   34251    4.6000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.600000e+01, 34251 iterations, 6.17 seconds (5.70 work units)
Total elapsed time = 15.60s (DegenMoves)

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

     0     0   46.00000    0  447    7.00000   46.00000   557%     -   17s
H    0     0                       9.0000000   46.00000   411%     -   17s
     0     0   46.00000    0  694    9.00000   46.00000   411%     -   24s
     0     0   46.00000    0  629    9.00000   46.00000   411%     -   27s
     0     0   46.00000    0  571    9.00000   46.00000   411%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 28
  Cover: 11
  Clique: 13
  MIR: 139
  StrongCG: 1
  GUB cover: 3
  Zero half: 9
  RLT: 60
  BQP: 1

Explored 1 nodes (66251 simplex iterations) in 50.08 seconds (46.80 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 3 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.600000000000e+01, gap 411.1111%

Wrote result file './lp_solutions/grafo2851.40.sol'

