
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 09:11:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5905.46.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/grafo5905.46.lp
Reading time = 0.17 seconds
: 87951 rows, 2619 columns, 266070 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 87951 rows, 2619 columns and 266070 nonzeros
Model fingerprint: 0xce78ab56
Variable types: 51 continuous, 2568 integer (2568 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 9879 rows and 1 columns
Presolve time: 0.76s
Presolved: 78072 rows, 2618 columns, 236858 nonzeros
Variable types: 0 continuous, 2618 integer (2567 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2576 rows, 80648 columns, 239476 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15520    4.0656558e+01   0.000000e+00   3.059025e+04      5s
   31304    4.0631208e+01   0.000000e+00   1.128238e+04     10s
   46010    4.0624947e+01   0.000000e+00   1.724275e+03     15s
   54823    4.1000000e+01   0.000000e+00   0.000000e+00     18s
   54823    4.1000000e+01   0.000000e+00   0.000000e+00     18s
   54823    4.1000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 4.100000e+01, 54823 iterations, 17.20 seconds (10.01 work units)
Total elapsed time = 40.99s (DegenMoves)
Total elapsed time = 45.47s (DegenMoves)

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

     0     0   41.00000    0  678    7.00000   41.00000   486%     -   47s
H    0     0                      13.0000000   41.00000   215%     -   47s

Cutting planes:
  Cover: 36
  Clique: 6
  MIR: 132
  StrongCG: 2

Explored 1 nodes (74556 simplex iterations) in 50.02 seconds (36.07 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 7 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.100000000000e+01, gap 215.3846%

Wrote result file './lp_solutions/grafo5905.46.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:56:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5905.46.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/grafo5905.46.lp
Reading time = 0.14 seconds
: 87951 rows, 2619 columns, 266070 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 87951 rows, 2619 columns and 266070 nonzeros
Model fingerprint: 0xce78ab56
Variable types: 51 continuous, 2568 integer (2568 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 9879 rows and 1 columns
Presolve time: 0.49s
Presolved: 78072 rows, 2618 columns, 236858 nonzeros
Variable types: 0 continuous, 2618 integer (2567 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2576 rows, 80648 columns, 239476 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21854    4.0641967e+01   0.000000e+00   4.738086e+04      5s
   43204    4.0625661e+01   0.000000e+00   2.623395e+03     10s
   54823    4.1000000e+01   0.000000e+00   0.000000e+00     13s
   54823    4.1000000e+01   0.000000e+00   0.000000e+00     13s
   54823    4.1000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.100000e+01, 54823 iterations, 12.26 seconds (10.01 work units)
Total elapsed time = 31.44s (DegenMoves)
Total elapsed time = 35.66s (DegenMoves)

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

     0     0   41.00000    0  678    7.00000   41.00000   486%     -   36s
H    0     0                      13.0000000   41.00000   215%     -   36s
     0     0          -    0        13.00000   41.00000   215%     -   50s

Cutting planes:
  Gomory: 31
  Cover: 35
  Clique: 6
  MIR: 118
  StrongCG: 2
  Zero half: 31
  RLT: 51
  BQP: 1

Explored 1 nodes (82238 simplex iterations) in 50.02 seconds (47.25 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 7 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.100000000000e+01, gap 215.3846%

Wrote result file './lp_solutions/grafo5905.46.sol'

