
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:07:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7340.46.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/grafo7340.46.lp
Reading time = 0.23 seconds
: 147619 rows, 2937 columns, 445472 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 147619 rows, 2937 columns and 445472 nonzeros
Model fingerprint: 0xeeadaf8b
Variable types: 55 continuous, 2882 integer (2882 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, 6e+01]
Found heuristic solution: objective 2.0000000
Presolve removed 36969 rows and 42 columns
Presolve time: 1.08s
Presolved: 110650 rows, 2895 columns, 335098 nonzeros
Variable types: 0 continuous, 2895 integer (2840 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2892 rows, 113542 columns, 337993 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18898    5.5925919e+01   0.000000e+00   1.810844e+05      5s
   38164    5.5889664e+01   0.000000e+00   1.595432e+04     10s
   55971    5.5880420e+01   0.000000e+00   1.921991e+03     15s
   73292    5.5878148e+01   0.000000e+00   1.342100e+01     20s
   76156    5.6000000e+01   0.000000e+00   0.000000e+00     21s
   76156    5.6000000e+01   0.000000e+00   0.000000e+00     21s
   76156    5.6000000e+01   0.000000e+00   0.000000e+00     21s

Root relaxation: objective 5.600000e+01, 76156 iterations, 19.76 seconds (17.29 work units)
Total elapsed time = 46.64s (DegenMoves)

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

     0     0   56.00000    0  845   11.00000   56.00000   409%     -   50s

Explored 1 nodes (94502 simplex iterations) in 50.03 seconds (49.88 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 2 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.600000000000e+01, gap 409.0909%

Wrote result file './lp_solutions/grafo7340.46.sol'

