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diff --git a/pintos-progos/tests/threads/alarm-simultaneous.ck b/pintos-progos/tests/threads/alarm-simultaneous.ck
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+++ b/pintos-progos/tests/threads/alarm-simultaneous.ck
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+# -*- perl -*-
+use strict;
+use warnings;
+use tests::tests;
+check_expected ([<<'EOF']);
+(alarm-simultaneous) begin
+(alarm-simultaneous) Creating 3 threads to sleep 5 times each.
+(alarm-simultaneous) Each thread sleeps 10 ticks each time.
+(alarm-simultaneous) Within an iteration, all threads should wake up on the same tick.
+(alarm-simultaneous) iteration 0, thread 0: woke up after 10 ticks
+(alarm-simultaneous) iteration 0, thread 1: woke up 0 ticks later
+(alarm-simultaneous) iteration 0, thread 2: woke up 0 ticks later
+(alarm-simultaneous) iteration 1, thread 0: woke up 10 ticks later
+(alarm-simultaneous) iteration 1, thread 1: woke up 0 ticks later
+(alarm-simultaneous) iteration 1, thread 2: woke up 0 ticks later
+(alarm-simultaneous) iteration 2, thread 0: woke up 10 ticks later
+(alarm-simultaneous) iteration 2, thread 1: woke up 0 ticks later
+(alarm-simultaneous) iteration 2, thread 2: woke up 0 ticks later
+(alarm-simultaneous) iteration 3, thread 0: woke up 10 ticks later
+(alarm-simultaneous) iteration 3, thread 1: woke up 0 ticks later
+(alarm-simultaneous) iteration 3, thread 2: woke up 0 ticks later
+(alarm-simultaneous) iteration 4, thread 0: woke up 10 ticks later
+(alarm-simultaneous) iteration 4, thread 1: woke up 0 ticks later
+(alarm-simultaneous) iteration 4, thread 2: woke up 0 ticks later
+(alarm-simultaneous) end
+EOF
+pass;