
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:19:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5747.40.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/grafo5747.40.lp
Reading time = 0.17 seconds
: 105605 rows, 2029 columns, 318421 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 105605 rows, 2029 columns and 318421 nonzeros
Model fingerprint: 0xc760d464
Variable types: 43 continuous, 1986 integer (1986 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 33969 rows and 19 columns
Presolve time: 0.80s
Presolved: 71636 rows, 2010 columns, 216850 nonzeros
Variable types: 0 continuous, 2010 integer (1967 binary)
Root relaxation presolved: 2007 rows, 73643 columns, 218860 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25488    4.1718496e+01   0.000000e+00   2.007155e+04      5s
   38276    4.2000000e+01   0.000000e+00   0.000000e+00      7s
   38276    4.2000000e+01   0.000000e+00   0.000000e+00      7s
   38276    4.2000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.200000e+01, 38276 iterations, 6.35 seconds (5.38 work units)
Total elapsed time = 17.03s (DegenMoves)

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

     0     0   42.00000    0  421          -   42.00000      -     -   18s
H    0     0                       2.0000000   42.00000  2000%     -   19s
H    0     0                       4.0000000   42.00000   950%     -   26s
H    0     0                       5.0000000   42.00000   740%     -   26s
     0     0   42.00000    0  721    5.00000   42.00000   740%     -   26s
H    0     0                       6.0000000   42.00000   600%     -   27s
     0     0   42.00000    0  725    6.00000   42.00000   600%     -   28s
     0     0   42.00000    0  732    6.00000   42.00000   600%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 21
  Cover: 14
  Clique: 11
  MIR: 92
  StrongCG: 3
  Zero half: 120
  RLT: 63
  BQP: 2

Explored 1 nodes (67444 simplex iterations) in 50.08 seconds (43.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 6 5 4 2 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.200000000000e+01, gap 600.0000%

Wrote result file './lp_solutions/grafo5747.40.sol'

