
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 03:13:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11532.39.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/grafo11532.39.lp
Reading time = 0.17 seconds
: 80690 rows, 2211 columns, 244008 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 80690 rows, 2211 columns and 244008 nonzeros
Model fingerprint: 0x44062822
Variable types: 48 continuous, 2163 integer (2163 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]
Found heuristic solution: objective 2.0000000
Presolve removed 16478 rows and 33 columns
Presolve time: 0.80s
Presolved: 64212 rows, 2178 columns, 195042 nonzeros
Variable types: 0 continuous, 2178 integer (2130 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2178 rows, 66390 columns, 197220 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15857    4.9696165e+01   0.000000e+00   2.242319e+04      5s
   33922    4.9664696e+01   0.000000e+00   2.111230e+03     10s
   50500    5.0000000e+01   0.000000e+00   0.000000e+00     15s
   50500    5.0000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.000000e+01, 50500 iterations, 13.91 seconds (8.43 work units)
Total elapsed time = 26.11s (DegenMoves)
Total elapsed time = 43.94s (DegenMoves)
Total elapsed time = 46.96s (DegenMoves)

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

     0     0   50.00000    0  550   11.00000   50.00000   355%     -   50s

Explored 1 nodes (83924 simplex iterations) in 50.03 seconds (43.90 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 2 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.000000000000e+01, gap 354.5455%

Wrote result file './lp_solutions/grafo11532.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:04:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11532.39.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/grafo11532.39.lp
Reading time = 0.13 seconds
: 80690 rows, 2211 columns, 244008 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 80690 rows, 2211 columns and 244008 nonzeros
Model fingerprint: 0x44062822
Variable types: 48 continuous, 2163 integer (2163 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]
Found heuristic solution: objective 2.0000000
Presolve removed 16478 rows and 33 columns
Presolve time: 0.54s
Presolved: 64212 rows, 2178 columns, 195042 nonzeros
Variable types: 0 continuous, 2178 integer (2130 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2178 rows, 66390 columns, 197220 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23641    4.9675658e+01   0.000000e+00   4.223214e+04      5s
   48982    4.9660634e+01   0.000000e+00   4.937449e+01     10s
   50500    5.0000000e+01   0.000000e+00   0.000000e+00     10s
   50500    5.0000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.000000e+01, 50500 iterations, 9.80 seconds (8.43 work units)
Total elapsed time = 18.84s (DegenMoves)
Total elapsed time = 32.61s (DegenMoves)
Total elapsed time = 36.02s (DegenMoves)

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

     0     0   50.00000    0  498   11.00000   50.00000   355%     -   38s
H    0     0                      15.0000000   50.00000   233%     -   38s
     0     0   50.00000    0  663   15.00000   50.00000   233%     -   46s
     0     0   50.00000    0  643   15.00000   50.00000   233%     -   47s

Cutting planes:
  Lift-and-project: 29
  Cover: 24
  Clique: 3
  MIR: 156
  GUB cover: 3
  Zero half: 37
  RLT: 35

Explored 1 nodes (91931 simplex iterations) in 50.21 seconds (54.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 15 11 2 

Time limit reached
Best objective 1.500000000000e+01, best bound 5.000000000000e+01, gap 233.3333%

Wrote result file './lp_solutions/grafo11532.39.sol'

