diff --git a/constraints/conversion_0.mzn b/constraints/conversion_0.mzn
index 76f22b10790b13a9a4f470545463fb4f1cd1fdee..b0b909998b93d8c324c9f7cd14f68f9d9b135f60 100644
--- a/constraints/conversion_0.mzn
+++ b/constraints/conversion_0.mzn
@@ -20,7 +20,7 @@ constraint forall (obj in 1..n_moving_obj, j in 1..(n_intervals + 1))
     ((m_obj_loc[obj, j] != 0) -> (
         (m_obj_loc[obj, j] == m_obj_loc[obj, j - 1] /\ (forall (k in departure_op[obj, m_obj_loc[obj, j]]) (op_status[k, j - 1] == 0)))
             \/
-        (not (forall (k in arrival_op[obj, m_obj_loc[obj, j]]) (op_fin[k, j - 1] == 0)))
+        (exists (k in arrival_op[obj, m_obj_loc[obj, j]]) (op_fin[k, j - 1] != 0))
     ));
 
 % Начальное состояние.
@@ -98,23 +98,26 @@ array [1..n_obj_with_storage, 0..(n_intervals + 1), 1..n_cargo_types] of var int
 
 % Ограничения на вместимость.
 array [1..n_obj_with_storage] of int : max_storage_vol;
-constraint forall (storage in 1..n_obj_with_storage, t in 0..(n_intervals + 1)) (
-    (sum (cargo in 1..n_cargo_types) (storage_used_volume[storage, t, cargo]) <= max_storage_vol[storage])
-        /\
-    (forall (cargo in 1..n_cargo_types) (0 <= storage_used_volume[storage, t, cargo]))
+constraint forall (storage in 1..n_obj_with_storage, t in 0..(n_intervals + 1)) ( % Масимальный объём.
+    sum (cargo in 1..n_cargo_types) (storage_used_volume[storage, t, cargo]) <= max_storage_vol[storage]
+);
+constraint forall (storage in 1..n_obj_with_storage, t in 0..(n_intervals + 1), cargo in 1..n_cargo_types) ( % Неотрицательность объёма.
+    0 <= storage_used_volume[storage, t, cargo]
 );
 
 % Ограничения на граничные значения.
 array [1..n_obj_with_storage, 1..n_cargo_types] of int : initial_storage_vol;
 array [1..n_obj_with_storage, 1..n_cargo_types] of int : final_storage_vol;
-constraint forall (storage in 1..n_obj_with_storage, cargo in 1..n_cargo_types) (
-    (storage_used_volume[storage, 0, cargo] = initial_storage_vol[storage, cargo])
-        /\
-    (if final_storage_vol[storage, cargo] >= 0 then
-        (storage_used_volume[storage, (n_intervals + 1), cargo] == final_storage_vol[storage, cargo])
-    else
-        true
-    endif)
+
+constraint forall (storage in 1..n_obj_with_storage, cargo in 1..n_cargo_types) ( % Initial values.
+    storage_used_volume[storage, 0, cargo] = initial_storage_vol[storage, cargo]
+);
+
+constraint forall (storage in 1..n_obj_with_storage, cargo in 1..n_cargo_types) ( % Final values.
+    if final_storage_vol[storage, cargo] >= 0 then
+        storage_used_volume[storage, n_intervals + 1, cargo] == final_storage_vol[storage, cargo]
+    else true
+    endif
 );
 
 % Изменение грузов в хранилищах.
@@ -212,11 +215,11 @@ array [1..n_moving_obj, 0..(n_intervals + 1)] of var bool : is_interval_useful;
     );
 
 constraint forall (obj in 1..n_moving_obj, t in 0..n_intervals) ( % Само ограничение.
-    if ((m_obj_loc[obj, t] != 0) /\ (next_m_obj_loc[obj, t + 1] != 0) /\ (m_obj_loc[obj, t + 1] == 0)) then
-        if (next_m_obj_loc[obj, t + 1] == prev_m_obj_loc[obj, t]) then
-            is_interval_useful[obj, t] == true
-        endif
-    endif
+    ((     m_obj_loc[obj, t]     != 0) /\
+     (prev_m_obj_loc[obj, t]     != 0) /\
+     (     m_obj_loc[obj, t + 1] == 0) /\
+     (next_m_obj_loc[obj, t + 1] == prev_m_obj_loc[obj, t])
+    ) -> is_interval_useful[obj, t]
 );
 
 solve minimize sum(is_not_terminated);