
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:17:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3601.44.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/grafo3601.44.lp
Reading time = 0.14 seconds
: 67721 rows, 2217 columns, 204871 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 67721 rows, 2217 columns and 204871 nonzeros
Model fingerprint: 0xdfe65f2e
Variable types: 45 continuous, 2172 integer (2172 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 8100 rows and 29 columns
Presolve time: 0.70s
Presolved: 59621 rows, 2188 columns, 180909 nonzeros
Variable types: 0 continuous, 2188 integer (2143 binary)
Root relaxation presolved: 2188 rows, 61809 columns, 183097 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18476    4.1974832e+01   0.000000e+00   1.495941e+04      5s
   35417    4.2000000e+01   0.000000e+00   0.000000e+00      9s
   35417    4.2000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.200000e+01, 35417 iterations, 8.61 seconds (4.93 work units)
Total elapsed time = 18.02s (DegenMoves)
Total elapsed time = 28.37s (DegenMoves)
Total elapsed time = 30.03s (DegenMoves)

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

     0     0   42.00000    0  489          -   42.00000      -     -   32s
H    0     0                      13.0000000   42.00000   223%     -   32s
H    0     0                      14.0000000   42.00000   200%     -   32s
     0     0   42.00000    0  706   14.00000   42.00000   200%     -   41s
     0     0   42.00000    0  691   14.00000   42.00000   200%     -   44s

Cutting planes:
  Gomory: 5
  Lift-and-project: 26
  Cover: 12
  MIR: 105
  StrongCG: 2
  GUB cover: 2
  Zero half: 36
  RLT: 53

Explored 1 nodes (64395 simplex iterations) in 50.24 seconds (35.02 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 14 13 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.200000000000e+01, gap 200.0000%

Wrote result file './lp_solutions/grafo3601.44.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:12:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3601.44.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/grafo3601.44.lp
Reading time = 0.11 seconds
: 67721 rows, 2217 columns, 204871 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 67721 rows, 2217 columns and 204871 nonzeros
Model fingerprint: 0xdfe65f2e
Variable types: 45 continuous, 2172 integer (2172 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 8100 rows and 29 columns
Presolve time: 0.44s
Presolved: 59621 rows, 2188 columns, 180909 nonzeros
Variable types: 0 continuous, 2188 integer (2143 binary)
Root relaxation presolved: 2188 rows, 61809 columns, 183097 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28268    4.1970782e+01   0.000000e+00   8.295446e+02      5s
   35417    4.2000000e+01   0.000000e+00   0.000000e+00      6s
   35417    4.2000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.200000e+01, 35417 iterations, 5.86 seconds (4.93 work units)
Total elapsed time = 12.97s (DegenMoves)
Total elapsed time = 21.07s (DegenMoves)

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

     0     0   42.00000    0  489          -   42.00000      -     -   23s
H    0     0                      13.0000000   42.00000   223%     -   23s
H    0     0                      14.0000000   42.00000   200%     -   23s
     0     0   42.00000    0  706   14.00000   42.00000   200%     -   29s
     0     0   42.00000    0  691   14.00000   42.00000   200%     -   31s
H    0     0                      15.0000000   42.00000   180%     -   48s
H    0     0                      16.0000000   42.00000   162%     -   48s
     0     0   41.00000    0  432   16.00000   41.00000   156%     -   48s
     0     0   41.00000    0  430   16.00000   41.00000   156%     -   49s
     0     0          -    0        16.00000   41.00000   156%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 35
  MIR: 173
  StrongCG: 3
  GUB cover: 8
  Zero half: 34
  RLT: 53

Explored 1 nodes (81340 simplex iterations) in 50.08 seconds (49.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 16 15 14 13 

Time limit reached
Best objective 1.600000000000e+01, best bound 4.100000000000e+01, gap 156.2500%

Wrote result file './lp_solutions/grafo3601.44.sol'

