
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:06:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1454.49.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/grafo1454.49.lp
Reading time = 0.20 seconds
: 108365 rows, 2808 columns, 327357 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 108365 rows, 2808 columns and 327357 nonzeros
Model fingerprint: 0xed03ce38
Variable types: 51 continuous, 2757 integer (2757 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 17298 rows and 17 columns
Presolve time: 1.05s
Presolved: 91067 rows, 2791 columns, 275792 nonzeros
Variable types: 0 continuous, 2791 integer (2740 binary)
Root relaxation presolved: 2785 rows, 93852 columns, 278583 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12239    5.3757293e+01   0.000000e+00   5.026679e+04      5s
   27314    5.3704353e+01   0.000000e+00   2.035349e+04     10s
   41570    5.3696107e+01   0.000000e+00   5.281656e+03     15s
   49532    5.4000000e+01   0.000000e+00   0.000000e+00     18s
   49532    5.4000000e+01   0.000000e+00   0.000000e+00     18s
   49532    5.4000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.400000e+01, 49532 iterations, 16.69 seconds (9.31 work units)
Total elapsed time = 38.62s (DegenMoves)
Total elapsed time = 42.47s (DegenMoves)

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

     0     0   54.00000    0  730          -   54.00000      -     -   43s
H    0     0                      12.0000000   54.00000   350%     -   43s
     0     0          -    0        12.00000   54.00000   350%     -   50s

Cutting planes:
  Gomory: 33
  Cover: 21
  Clique: 9
  MIR: 105
  GUB cover: 1
  Zero half: 13
  RLT: 57
  BQP: 2

Explored 1 nodes (66451 simplex iterations) in 50.03 seconds (34.21 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 12 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.400000000000e+01, gap 350.0000%

Wrote result file './lp_solutions/grafo1454.49.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:41:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1454.49.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/grafo1454.49.lp
Reading time = 0.17 seconds
: 108365 rows, 2808 columns, 327357 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 108365 rows, 2808 columns and 327357 nonzeros
Model fingerprint: 0xed03ce38
Variable types: 51 continuous, 2757 integer (2757 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 17298 rows and 17 columns
Presolve time: 0.70s
Presolved: 91067 rows, 2791 columns, 275792 nonzeros
Variable types: 0 continuous, 2791 integer (2740 binary)
Root relaxation presolved: 2785 rows, 93852 columns, 278583 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19394    5.3718306e+01   0.000000e+00   1.713031e+04      5s
   40382    5.3696317e+01   0.000000e+00   3.138508e+02     10s
   49532    5.4000000e+01   0.000000e+00   0.000000e+00     12s
   49532    5.4000000e+01   0.000000e+00   0.000000e+00     12s
   49532    5.4000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 5.400000e+01, 49532 iterations, 11.58 seconds (9.31 work units)
Total elapsed time = 28.54s (DegenMoves)
Total elapsed time = 31.44s (DegenMoves)

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

     0     0   54.00000    0  730          -   54.00000      -     -   32s
H    0     0                      12.0000000   54.00000   350%     -   32s
     0     0          -    0        12.00000   54.00000   350%     -   50s

Cutting planes:
  Gomory: 33
  Cover: 21
  Clique: 9
  MIR: 105
  GUB cover: 1
  Zero half: 13
  RLT: 57
  BQP: 2

Explored 1 nodes (75049 simplex iterations) in 50.02 seconds (47.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 12 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.400000000000e+01, gap 350.0000%

Wrote result file './lp_solutions/grafo1454.49.sol'

