
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:49:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3978.47.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/grafo3978.47.lp
Reading time = 0.16 seconds
: 79644 rows, 2364 columns, 240643 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 79644 rows, 2364 columns and 240643 nonzeros
Model fingerprint: 0xd3f86dff
Variable types: 45 continuous, 2319 integer (2319 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 11168 rows and 1 columns
Presolve time: 0.82s
Presolved: 68476 rows, 2363 columns, 207430 nonzeros
Variable types: 0 continuous, 2363 integer (2318 binary)
Root relaxation presolved: 2345 rows, 70821 columns, 209793 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16373    4.4945313e+01   0.000000e+00   1.438034e+04      5s
   35183    4.4930691e+01   0.000000e+00   4.302231e+03     10s
   46050    4.5000000e+01   0.000000e+00   0.000000e+00     13s
   46050    4.5000000e+01   0.000000e+00   0.000000e+00     13s
   46050    4.5000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.500000e+01, 46050 iterations, 12.31 seconds (7.13 work units)
Total elapsed time = 23.51s (DegenMoves)
Total elapsed time = 25.49s (DegenMoves)

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

     0     0   45.00000    0  366          -   45.00000      -     -   26s
H    0     0                       6.0000000   45.00000   650%     -   26s
H    0     0                       9.0000000   45.00000   400%     -   26s
H    0     0                      11.0000000   45.00000   309%     -   28s
     0     0   45.00000    0  710   11.00000   45.00000   309%     -   39s
H    0     0                      12.0000000   45.00000   275%     -   40s
     0     0   45.00000    0  713   12.00000   45.00000   275%     -   41s
     0     0          -    0        12.00000   45.00000   275%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 44
  Cover: 12
  Clique: 5
  MIR: 156
  StrongCG: 1
  Zero half: 26
  RLT: 45
  BQP: 1

Explored 1 nodes (65746 simplex iterations) in 50.10 seconds (29.38 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 11 9 6 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.500000000000e+01, gap 275.0000%

Wrote result file './lp_solutions/grafo3978.47.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:15:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3978.47.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/grafo3978.47.lp
Reading time = 0.13 seconds
: 79644 rows, 2364 columns, 240643 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 79644 rows, 2364 columns and 240643 nonzeros
Model fingerprint: 0xd3f86dff
Variable types: 45 continuous, 2319 integer (2319 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 11168 rows and 1 columns
Presolve time: 0.44s
Presolved: 68476 rows, 2363 columns, 207430 nonzeros
Variable types: 0 continuous, 2363 integer (2318 binary)
Root relaxation presolved: 2345 rows, 70821 columns, 209793 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25283    4.4935467e+01   0.000000e+00   5.868154e+03      5s
   46050    4.5000000e+01   0.000000e+00   0.000000e+00      9s
   46050    4.5000000e+01   0.000000e+00   0.000000e+00      9s
   46050    4.5000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.500000e+01, 46050 iterations, 8.70 seconds (7.13 work units)
Total elapsed time = 16.89s (DegenMoves)

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

     0     0   45.00000    0  366          -   45.00000      -     -   18s
H    0     0                       6.0000000   45.00000   650%     -   18s
H    0     0                       9.0000000   45.00000   400%     -   18s
H    0     0                      11.0000000   45.00000   309%     -   19s
     0     0   45.00000    0  710   11.00000   45.00000   309%     -   27s
H    0     0                      12.0000000   45.00000   275%     -   27s
     0     0   45.00000    0  713   12.00000   45.00000   275%     -   28s
     0     0   45.00000    0  502   12.00000   45.00000   275%     -   48s
     0     0   45.00000    0  540   12.00000   45.00000   275%     -   49s

Cutting planes:
  Cover: 39
  Clique: 4
  MIR: 63
  Zero half: 1
  RLT: 34
  BQP: 1

Explored 1 nodes (80927 simplex iterations) in 50.07 seconds (44.05 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 11 9 6 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.500000000000e+01, gap 275.0000%

Wrote result file './lp_solutions/grafo3978.47.sol'

