
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:50:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2258.47.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/grafo2258.47.lp
Reading time = 0.23 seconds
: 108736 rows, 2777 columns, 328507 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 108736 rows, 2777 columns and 328507 nonzeros
Model fingerprint: 0x4bc52655
Variable types: 52 continuous, 2725 integer (2725 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 19137 rows and 2 columns
Presolve time: 1.11s
Presolved: 89599 rows, 2775 columns, 271525 nonzeros
Variable types: 0 continuous, 2775 integer (2723 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2739 rows, 92338 columns, 274300 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12974    5.4941908e+01   0.000000e+00   3.472065e+04      5s
   28418    5.4925167e+01   0.000000e+00   4.526564e+03     10s
   41882    5.4923086e+01   0.000000e+00   5.070214e+02     15s
   44405    5.5000000e+01   0.000000e+00   0.000000e+00     16s
   44405    5.5000000e+01   0.000000e+00   0.000000e+00     16s
   44405    5.5000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.500000e+01, 44405 iterations, 14.81 seconds (8.85 work units)
Total elapsed time = 40.15s (DegenMoves)

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

     0     0   55.00000    0  852    8.00000   55.00000   587%     -   43s
H    0     0                      10.0000000   55.00000   450%     -   43s

Cutting planes:
  Cover: 28
  Clique: 5
  MIR: 250
  StrongCG: 1

Explored 1 nodes (62138 simplex iterations) in 50.03 seconds (34.56 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.500000000000e+01, gap 450.0000%

Wrote result file './lp_solutions/grafo2258.47.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:11:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2258.47.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/grafo2258.47.lp
Reading time = 0.17 seconds
: 108736 rows, 2777 columns, 328507 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 108736 rows, 2777 columns and 328507 nonzeros
Model fingerprint: 0x4bc52655
Variable types: 52 continuous, 2725 integer (2725 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 19137 rows and 2 columns
Presolve time: 0.61s
Presolved: 89599 rows, 2775 columns, 271525 nonzeros
Variable types: 0 continuous, 2775 integer (2723 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2739 rows, 92338 columns, 274300 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22082    5.4929210e+01   0.000000e+00   1.826464e+04      5s
   41486    5.4923093e+01   0.000000e+00   9.244072e+01     10s
   44405    5.5000000e+01   0.000000e+00   0.000000e+00     11s
   44405    5.5000000e+01   0.000000e+00   0.000000e+00     11s
   44405    5.5000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.500000e+01, 44405 iterations, 10.15 seconds (8.85 work units)
Total elapsed time = 30.71s (DegenMoves)

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

     0     0   55.00000    0  852    8.00000   55.00000   587%     -   33s
H    0     0                      10.0000000   55.00000   450%     -   33s
     0     0          -    0        10.00000   55.00000   450%     -   50s

Cutting planes:
  Gomory: 36
  Cover: 25
  Clique: 5
  MIR: 160
  StrongCG: 1
  Zero half: 74
  RLT: 42
  BQP: 1

Explored 1 nodes (68311 simplex iterations) in 50.02 seconds (45.26 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.500000000000e+01, gap 450.0000%

Wrote result file './lp_solutions/grafo2258.47.sol'

