minimize call value

mythril/analysis/solver.py

@@ -83,12 +83,13 @@ def get_transaction_sequence(global_state, constraints):
             transactions.append(transaction)
             # Constrain calldatasize
             max_calldatasize = 5000
-            if max_calldatasize != None:
+            if max_calldatasize is not None:
                 tx_constraints.append(
                     UGE(max_calldatasize, transaction.call_data.calldatasize)
                 )
 
             minimize.append(transaction.call_data.calldatasize)
+            minimize.append(transaction.call_value)
             
             concrete_transactions[tx_id] = tx_template.copy()