fix: bug with initial condition of cycle

src/simplexe.py

@@ -264,6 +264,7 @@ class Simplexe:
 ###################################################################
     # returns cheks if the current solution is feasible or not (return True if feasible)
 
+
     def __isSolutionFeasible(self):
         # we MUST have that all BASIC variables are >= 0 to have a FEASIBLE solution
         # to iterate over basic variables do:
@@ -284,7 +285,8 @@ class Simplexe:
         #     print(self.__tableau[rowId, baseColId])
         #
 
-        if np.array_equal(self.__basicVariables, self.__initBasicVariable):
+        if self.__PivotCount != 0 and np.array_equal(self.__basicVariables,
+                                                     self.__initBasicVariable):
             self.hasCycle = True
 
         if self.hasCycle: