
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:18:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6907.38.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/grafo6907.38.lp
Reading time = 0.24 seconds
: 146913 rows, 2028 columns, 442409 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 146913 rows, 2028 columns and 442409 nonzeros
Model fingerprint: 0x9569fcb7
Variable types: 44 continuous, 1984 integer (1984 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 1.0000000
Presolve removed 57608 rows and 16 columns
Presolve time: 0.98s
Presolved: 89305 rows, 2012 columns, 269800 nonzeros
Variable types: 0 continuous, 2012 integer (1968 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2012 rows, 91317 columns, 271812 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27001    5.3861995e+01   0.000000e+00   7.598818e+03      5s
   41278    5.4000000e+01   0.000000e+00   0.000000e+00      7s
   41278    5.4000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 5.400000e+01, 41278 iterations, 6.36 seconds (5.26 work units)
Total elapsed time = 14.31s (DegenMoves)
Total elapsed time = 15.79s (DegenMoves)

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

     0     0   54.00000    0  566    9.00000   54.00000   500%     -   16s
H    0     0                      12.0000000   54.00000   350%     -   16s
     0     0   54.00000    0  739   12.00000   54.00000   350%     -   28s
     0     0   54.00000    0  728   12.00000   54.00000   350%     -   30s
     0     0   54.00000    0  667   12.00000   54.00000   350%     -   50s

Cutting planes:
  Gomory: 5
  Cover: 15
  Clique: 37
  MIR: 181
  StrongCG: 1
  Zero half: 69
  RLT: 85
  BQP: 3

Explored 1 nodes (69567 simplex iterations) in 50.04 seconds (54.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 9 1 

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

Wrote result file './lp_solutions/grafo6907.38.sol'

