
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:33:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7496.42.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/grafo7496.42.lp
Reading time = 0.23 seconds
: 143956 rows, 2611 columns, 434246 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 143956 rows, 2611 columns and 434246 nonzeros
Model fingerprint: 0xd64e419e
Variable types: 51 continuous, 2560 integer (2560 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 44594 rows and 13 columns
Presolve time: 0.98s
Presolved: 99362 rows, 2598 columns, 301040 nonzeros
Variable types: 0 continuous, 2598 integer (2547 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2581 rows, 101943 columns, 303638 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18366    5.3678490e+01   0.000000e+00   1.083451e+05      5s
   38665    5.3627455e+01   0.000000e+00   1.040380e+04     10s
   58940    5.3616084e+01   0.000000e+00   3.458672e+03     15s
   79577    5.3612788e+01   0.000000e+00   2.426127e+02     20s
   89205    5.4000000e+01   0.000000e+00   0.000000e+00     22s
   89205    5.4000000e+01   0.000000e+00   0.000000e+00     22s
   89205    5.4000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.400000e+01, 89205 iterations, 21.16 seconds (18.34 work units)
Total elapsed time = 44.06s (DegenMoves)
Total elapsed time = 45.77s (DegenMoves)

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

     0     0   54.00000    0  679   11.00000   54.00000   391%     -   49s
H    0     0                      15.0000000   54.00000   260%     -   49s

Cutting planes:
  Cover: 56
  Clique: 31

Explored 1 nodes (107306 simplex iterations) in 50.02 seconds (52.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 15 11 

Time limit reached
Best objective 1.500000000000e+01, best bound 5.400000000000e+01, gap 260.0000%

Wrote result file './lp_solutions/grafo7496.42.sol'

