
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:10:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5354.42.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/grafo5354.42.lp
Reading time = 0.22 seconds
: 140467 rows, 2544 columns, 423646 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 140467 rows, 2544 columns and 423646 nonzeros
Model fingerprint: 0x2a3229d2
Variable types: 50 continuous, 2494 integer (2494 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 43830 rows and 29 columns
Presolve time: 1.07s
Presolved: 96637 rows, 2515 columns, 292654 nonzeros
Variable types: 0 continuous, 2515 integer (2465 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2512 rows, 99149 columns, 295169 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19597    5.5728407e+01   0.000000e+00   1.170776e+05      5s
   40908    5.3659934e+01   0.000000e+00   9.325669e+04     10s
   62587    5.3642282e+01   0.000000e+00   3.644511e+03     15s
   85577    5.3635935e+01   0.000000e+00   2.916665e+03     20s
   97507    5.4000000e+01   0.000000e+00   0.000000e+00     23s
   97507    5.4000000e+01   0.000000e+00   0.000000e+00     23s
   97507    5.4000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 5.400000e+01, 97507 iterations, 21.48 seconds (16.03 work units)
Total elapsed time = 40.43s (DegenMoves)

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

     0     0   54.00000    0  581    6.00000   54.00000   800%     -   46s
H    0     0                       7.0000000   54.00000   671%     -   46s
     0     0          -    0         7.00000   54.00000   671%     -   50s

Cutting planes:
  Gomory: 40
  Cover: 36
  Clique: 17
  MIR: 119
  GUB cover: 4
  Zero half: 22
  RLT: 31

Explored 1 nodes (117284 simplex iterations) in 50.02 seconds (48.28 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 6 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.400000000000e+01, gap 671.4286%

Wrote result file './lp_solutions/grafo5354.42.sol'

