
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:18:30 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1605.50.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/grafo1605.50.lp
Reading time = 0.16 seconds
: 76914 rows, 2466 columns, 232447 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 76914 rows, 2466 columns and 232447 nonzeros
Model fingerprint: 0xf9bef5d7
Variable types: 45 continuous, 2421 integer (2421 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 6063 rows and 38 columns
Presolve time: 0.82s
Presolved: 70851 rows, 2428 columns, 214659 nonzeros
Variable types: 0 continuous, 2428 integer (2383 binary)
Root relaxation presolved: 2428 rows, 73279 columns, 217087 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17933    3.3757040e+01   0.000000e+00   7.521396e+03      5s
   25394    3.4000000e+01   0.000000e+00   0.000000e+00      7s
   25394    3.4000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 3.400000e+01, 25394 iterations, 6.23 seconds (4.21 work units)
Total elapsed time = 14.25s (DegenMoves)

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

     0     0   34.00000    0  401          -   34.00000      -     -   14s
H    0     0                       9.0000000   34.00000   278%     -   15s
H    0     0                      12.0000000   34.00000   183%     -   15s
     0     0   34.00000    0  642   12.00000   34.00000   183%     -   24s
     0     0   34.00000    0  644   12.00000   34.00000   183%     -   26s
     0     0   34.00000    0  596   12.00000   34.00000   183%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 33
  Cover: 13
  Clique: 1
  MIR: 129
  GUB cover: 1
  Zero half: 27
  RLT: 33

Explored 1 nodes (52171 simplex iterations) in 50.12 seconds (30.86 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 9 

Time limit reached
Best objective 1.200000000000e+01, best bound 3.400000000000e+01, gap 183.3333%

Wrote result file './lp_solutions/grafo1605.50.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:57:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1605.50.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/grafo1605.50.lp
Reading time = 0.12 seconds
: 76914 rows, 2466 columns, 232447 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 76914 rows, 2466 columns and 232447 nonzeros
Model fingerprint: 0xf9bef5d7
Variable types: 45 continuous, 2421 integer (2421 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 6063 rows and 38 columns
Presolve time: 0.53s
Presolved: 70851 rows, 2428 columns, 214659 nonzeros
Variable types: 0 continuous, 2428 integer (2383 binary)
Root relaxation presolved: 2428 rows, 73279 columns, 217087 nonzeros


Root relaxation: objective 3.400000e+01, 25394 iterations, 4.29 seconds (4.21 work units)
Total elapsed time = 5.19s (DegenMoves)
Total elapsed time = 10.13s (DegenMoves)

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

     0     0   34.00000    0  401          -   34.00000      -     -   10s
H    0     0                       9.0000000   34.00000   278%     -   10s
H    0     0                      12.0000000   34.00000   183%     -   10s
     0     0   34.00000    0  642   12.00000   34.00000   183%     -   16s
     0     0   34.00000    0  644   12.00000   34.00000   183%     -   17s
H    0     0                      13.0000000   34.00000   162%     -   41s
H    0     0                      14.0000000   34.00000   143%     -   41s
H    0     0                      16.0000000   33.00000   106%     -   43s
     0     0   33.00000    0  331   16.00000   33.00000   106%     -   43s
     0     0   33.00000    0  353   16.00000   33.00000   106%     -   43s
     0     0   33.00000    0  591   16.00000   33.00000   106%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 24
  Clique: 1
  MIR: 151
  StrongCG: 1
  GUB cover: 4
  Zero half: 37
  RLT: 34

Explored 1 nodes (65183 simplex iterations) in 50.09 seconds (43.59 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 16 14 13 ... 9

Time limit reached
Best objective 1.600000000000e+01, best bound 3.300000000000e+01, gap 106.2500%

Wrote result file './lp_solutions/grafo1605.50.sol'

