
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:31:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7285.40.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/grafo7285.40.lp
Reading time = 0.18 seconds
: 113459 rows, 2516 columns, 342714 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 113459 rows, 2516 columns and 342714 nonzeros
Model fingerprint: 0x617b4527
Variable types: 52 continuous, 2464 integer (2464 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 28833 rows and 15 columns
Presolve time: 0.72s
Presolved: 84626 rows, 2501 columns, 256660 nonzeros
Variable types: 0 continuous, 2501 integer (2449 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2492 rows, 87118 columns, 259161 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22100    6.0705681e+01   0.000000e+00   3.363830e+04      5s
   44181    6.0684664e+01   0.000000e+00   2.810925e+01     10s
   44986    6.1000000e+01   0.000000e+00   0.000000e+00     10s
   44986    6.1000000e+01   0.000000e+00   0.000000e+00     10s
   44986    6.1000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 6.100000e+01, 44986 iterations, 9.43 seconds (7.58 work units)
Total elapsed time = 29.30s (DegenMoves)
Total elapsed time = 31.60s (DegenMoves)

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

     0     0   61.00000    0  748    6.00000   61.00000   917%     -   34s
H    0     0                       8.0000000   61.00000   662%     -   35s
     0     0          -    0         8.00000   61.00000   662%     -   50s

Cutting planes:
  Gomory: 38
  Cover: 3
  Clique: 13
  MIR: 85
  Zero half: 4
  RLT: 44
  BQP: 2

Explored 1 nodes (73022 simplex iterations) in 50.03 seconds (50.82 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 6 2 

Time limit reached
Best objective 8.000000000000e+00, best bound 6.100000000000e+01, gap 662.5000%

Wrote result file './lp_solutions/grafo7285.40.sol'

