./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:29:47,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:29:47,698 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:29:47,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:29:47,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:29:47,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:29:47,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:29:47,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:29:47,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:29:47,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:29:47,737 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:29:47,738 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:29:47,739 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:29:47,739 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:29:47,740 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:29:47,741 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:29:47,741 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:29:47,742 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:29:47,743 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:29:47,743 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:29:47,744 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:29:47,745 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:29:47,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:29:47,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:29:47,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:29:47,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:29:47,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:29:47,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:29:47,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:29:47,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:29:47,751 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:29:47,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:29:47,752 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:29:47,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:29:47,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:47,754 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:29:47,754 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:29:47,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:29:47,755 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:29:47,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:29:47,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:29:47,756 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:29:47,757 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:29:47,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:29:47,757 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b [2023-11-23 21:29:48,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:29:48,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:29:48,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:29:48,171 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:29:48,172 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:29:48,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2023-11-23 21:29:51,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:29:51,842 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:29:51,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2023-11-23 21:29:51,899 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/data/3311f8e39/d01d63506ff64a4ead3d14ef3df0d814/FLAGb8a661e23 [2023-11-23 21:29:51,918 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/data/3311f8e39/d01d63506ff64a4ead3d14ef3df0d814 [2023-11-23 21:29:51,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:29:51,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:29:51,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:51,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:29:51,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:29:51,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:51" (1/1) ... [2023-11-23 21:29:51,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d90a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:51, skipping insertion in model container [2023-11-23 21:29:51,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:51" (1/1) ... [2023-11-23 21:29:52,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:29:52,471 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2023-11-23 21:29:52,480 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2023-11-23 21:29:53,666 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:53,667 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:53,667 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:53,669 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:53,670 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:53,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:53,687 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:53,689 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:53,690 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,226 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:29:54,228 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:29:54,229 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:29:54,231 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:29:54,233 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:29:54,234 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:29:54,235 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:29:54,236 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:29:54,236 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:29:54,237 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:29:54,604 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:54,822 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:29:54,854 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2023-11-23 21:29:54,856 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2023-11-23 21:29:54,976 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,977 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,977 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,978 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,986 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,987 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,988 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:54,992 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:55,046 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:29:55,068 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:29:55,078 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:29:55,080 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:29:55,081 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:29:55,081 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:29:55,082 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:29:55,082 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:29:55,091 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:29:55,092 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:29:55,180 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-23 21:29:55,182 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:55,183 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:55,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8989-9000] [2023-11-23 21:29:55,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:55,548 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,549 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,549 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,549 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,550 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,550 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,550 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,550 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,550 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,551 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,551 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,552 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,552 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,553 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,553 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,553 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,553 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,553 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:55,561 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:29:55,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55 WrapperNode [2023-11-23 21:29:55,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:55,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:55,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:29:55,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:29:55,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:55,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:55,853 INFO L138 Inliner]: procedures = 694, calls = 2926, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1196 [2023-11-23 21:29:55,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:55,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:29:55,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:29:55,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:29:55,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:55,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:55,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:55,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:55,966 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:55,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:55,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:56,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:56,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:29:56,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:29:56,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:29:56,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:29:56,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (1/1) ... [2023-11-23 21:29:56,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:56,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:56,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:29:56,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:29:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 21:29:56,109 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 21:29:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2023-11-23 21:29:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2023-11-23 21:29:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:29:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:29:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:29:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2023-11-23 21:29:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2023-11-23 21:29:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:29:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:29:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:29:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:29:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:29:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:29:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:29:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:29:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2023-11-23 21:29:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2023-11-23 21:29:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:29:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:29:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:29:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:29:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2023-11-23 21:29:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2023-11-23 21:29:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:29:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:29:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2023-11-23 21:29:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2023-11-23 21:29:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:29:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:29:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:29:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2023-11-23 21:29:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2023-11-23 21:29:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2023-11-23 21:29:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2023-11-23 21:29:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:29:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:29:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2023-11-23 21:29:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2023-11-23 21:29:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2023-11-23 21:29:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2023-11-23 21:29:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:29:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:29:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:29:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2023-11-23 21:29:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2023-11-23 21:29:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2023-11-23 21:29:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2023-11-23 21:29:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2023-11-23 21:29:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2023-11-23 21:29:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2023-11-23 21:29:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2023-11-23 21:29:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:29:56,477 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:29:56,480 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:29:58,232 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:29:58,695 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:29:58,695 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:29:58,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:58 BoogieIcfgContainer [2023-11-23 21:29:58,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:29:58,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:29:58,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:29:58,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:29:58,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:29:51" (1/3) ... [2023-11-23 21:29:58,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b0b547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:58, skipping insertion in model container [2023-11-23 21:29:58,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:55" (2/3) ... [2023-11-23 21:29:58,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b0b547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:58, skipping insertion in model container [2023-11-23 21:29:58,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:58" (3/3) ... [2023-11-23 21:29:58,707 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_up_to_harness.i [2023-11-23 21:29:58,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:29:58,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:29:58,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:29:58,816 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50307e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:29:58,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:29:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 165 states have (on average 1.1696969696969697) internal successors, (193), 167 states have internal predecessors, (193), 154 states have call successors, (154), 20 states have call predecessors, (154), 20 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-11-23 21:29:58,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 21:29:58,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:58,832 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:58,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:58,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash 939560079, now seen corresponding path program 1 times [2023-11-23 21:29:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:58,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874240288] [2023-11-23 21:29:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:58,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:30:00,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:00,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874240288] [2023-11-23 21:30:00,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874240288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:00,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:00,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:30:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139716063] [2023-11-23 21:30:00,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:00,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:30:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:00,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:30:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:30:00,253 INFO L87 Difference]: Start difference. First operand has 342 states, 165 states have (on average 1.1696969696969697) internal successors, (193), 167 states have internal predecessors, (193), 154 states have call successors, (154), 20 states have call predecessors, (154), 20 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 21:30:01,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:01,161 INFO L93 Difference]: Finished difference Result 680 states and 1102 transitions. [2023-11-23 21:30:01,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:01,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 41 [2023-11-23 21:30:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:01,178 INFO L225 Difference]: With dead ends: 680 [2023-11-23 21:30:01,179 INFO L226 Difference]: Without dead ends: 351 [2023-11-23 21:30:01,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:30:01,195 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 26 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:01,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2769 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:30:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-23 21:30:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-11-23 21:30:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 172 states have (on average 1.1686046511627908) internal successors, (201), 174 states have internal predecessors, (201), 155 states have call successors, (155), 22 states have call predecessors, (155), 22 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-11-23 21:30:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 510 transitions. [2023-11-23 21:30:01,387 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 510 transitions. Word has length 41 [2023-11-23 21:30:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:01,388 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 510 transitions. [2023-11-23 21:30:01,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 21:30:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 510 transitions. [2023-11-23 21:30:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-23 21:30:01,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:01,392 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:01,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:30:01,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:01,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1863856318, now seen corresponding path program 1 times [2023-11-23 21:30:01,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:01,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458256627] [2023-11-23 21:30:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:01,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:30:02,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:02,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458256627] [2023-11-23 21:30:02,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458256627] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:02,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220853527] [2023-11-23 21:30:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:02,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:02,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:02,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:02,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:30:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:03,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:30:03,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 21:30:03,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:03,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220853527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:03,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:03,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-23 21:30:03,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067457367] [2023-11-23 21:30:03,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:03,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:30:03,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:30:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:30:03,264 INFO L87 Difference]: Start difference. First operand 351 states and 510 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:30:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:04,332 INFO L93 Difference]: Finished difference Result 366 states and 528 transitions. [2023-11-23 21:30:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:04,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 71 [2023-11-23 21:30:04,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:04,337 INFO L225 Difference]: With dead ends: 366 [2023-11-23 21:30:04,338 INFO L226 Difference]: Without dead ends: 363 [2023-11-23 21:30:04,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:30:04,340 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 24 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:04,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2801 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:30:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-23 21:30:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2023-11-23 21:30:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 181 states have (on average 1.1823204419889504) internal successors, (214), 183 states have internal predecessors, (214), 156 states have call successors, (156), 24 states have call predecessors, (156), 24 states have return successors, (155), 155 states have call predecessors, (155), 155 states have call successors, (155) [2023-11-23 21:30:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 525 transitions. [2023-11-23 21:30:04,373 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 525 transitions. Word has length 71 [2023-11-23 21:30:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:04,373 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 525 transitions. [2023-11-23 21:30:04,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:30:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 525 transitions. [2023-11-23 21:30:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-23 21:30:04,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:04,380 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:04,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:04,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:04,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:04,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:04,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1266238832, now seen corresponding path program 1 times [2023-11-23 21:30:04,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:04,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960018403] [2023-11-23 21:30:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:04,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-11-23 21:30:05,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960018403] [2023-11-23 21:30:05,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960018403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859895191] [2023-11-23 21:30:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:05,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:05,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:05,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:05,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:30:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:06,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:30:06,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-23 21:30:06,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:06,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859895191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:06,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:06,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-23 21:30:06,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253174218] [2023-11-23 21:30:06,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:06,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:30:06,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:06,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:30:06,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:30:06,627 INFO L87 Difference]: Start difference. First operand 363 states and 525 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-23 21:30:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:07,668 INFO L93 Difference]: Finished difference Result 661 states and 959 transitions. [2023-11-23 21:30:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:07,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 188 [2023-11-23 21:30:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:07,674 INFO L225 Difference]: With dead ends: 661 [2023-11-23 21:30:07,674 INFO L226 Difference]: Without dead ends: 372 [2023-11-23 21:30:07,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:30:07,677 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 15 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:07,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2805 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:30:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-23 21:30:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2023-11-23 21:30:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 187 states have (on average 1.1818181818181819) internal successors, (221), 189 states have internal predecessors, (221), 157 states have call successors, (157), 26 states have call predecessors, (157), 26 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-11-23 21:30:07,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 534 transitions. [2023-11-23 21:30:07,707 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 534 transitions. Word has length 188 [2023-11-23 21:30:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:07,709 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 534 transitions. [2023-11-23 21:30:07,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-23 21:30:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 534 transitions. [2023-11-23 21:30:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-23 21:30:07,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:07,713 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:07,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:07,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:07,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:07,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash -534796693, now seen corresponding path program 1 times [2023-11-23 21:30:07,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:07,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502110887] [2023-11-23 21:30:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:07,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-23 21:30:08,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:08,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502110887] [2023-11-23 21:30:08,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502110887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:08,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678255661] [2023-11-23 21:30:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:08,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:08,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:08,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:08,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:30:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:09,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:30:09,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-23 21:30:09,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678255661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:09,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:09,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-11-23 21:30:09,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824621288] [2023-11-23 21:30:09,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:09,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:30:09,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:09,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:30:09,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:30:09,793 INFO L87 Difference]: Start difference. First operand 372 states and 534 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:10,729 INFO L93 Difference]: Finished difference Result 745 states and 1075 transitions. [2023-11-23 21:30:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 194 [2023-11-23 21:30:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:10,735 INFO L225 Difference]: With dead ends: 745 [2023-11-23 21:30:10,736 INFO L226 Difference]: Without dead ends: 384 [2023-11-23 21:30:10,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:30:10,739 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 6 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:10,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2270 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:30:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-23 21:30:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 380. [2023-11-23 21:30:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 192 states have (on average 1.171875) internal successors, (225), 194 states have internal predecessors, (225), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (158), 157 states have call predecessors, (158), 157 states have call successors, (158) [2023-11-23 21:30:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 541 transitions. [2023-11-23 21:30:10,770 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 541 transitions. Word has length 194 [2023-11-23 21:30:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:10,770 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 541 transitions. [2023-11-23 21:30:10,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 541 transitions. [2023-11-23 21:30:10,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-23 21:30:10,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:10,775 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:10,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:10,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:10,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:10,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:10,988 INFO L85 PathProgramCache]: Analyzing trace with hash 5759239, now seen corresponding path program 1 times [2023-11-23 21:30:10,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:10,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116821406] [2023-11-23 21:30:10,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:10,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-23 21:30:12,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:12,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116821406] [2023-11-23 21:30:12,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116821406] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:12,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349805524] [2023-11-23 21:30:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:12,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:12,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:12,039 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:12,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:30:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:12,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:30:12,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-23 21:30:13,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349805524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:13,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:13,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-23 21:30:13,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264513054] [2023-11-23 21:30:13,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:13,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:30:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:13,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:30:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:30:13,029 INFO L87 Difference]: Start difference. First operand 380 states and 541 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:14,187 INFO L93 Difference]: Finished difference Result 755 states and 1074 transitions. [2023-11-23 21:30:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:14,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 196 [2023-11-23 21:30:14,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:14,192 INFO L225 Difference]: With dead ends: 755 [2023-11-23 21:30:14,192 INFO L226 Difference]: Without dead ends: 384 [2023-11-23 21:30:14,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:30:14,196 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 18 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:14,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2247 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:30:14,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-23 21:30:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2023-11-23 21:30:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 193 states have (on average 1.16580310880829) internal successors, (225), 196 states have internal predecessors, (225), 158 states have call successors, (158), 28 states have call predecessors, (158), 29 states have return successors, (159), 157 states have call predecessors, (159), 157 states have call successors, (159) [2023-11-23 21:30:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 542 transitions. [2023-11-23 21:30:14,226 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 542 transitions. Word has length 196 [2023-11-23 21:30:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:14,227 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 542 transitions. [2023-11-23 21:30:14,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 542 transitions. [2023-11-23 21:30:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-11-23 21:30:14,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:14,231 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:14,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:14,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:14,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:14,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1507929117, now seen corresponding path program 1 times [2023-11-23 21:30:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:14,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986223955] [2023-11-23 21:30:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:14,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-23 21:30:15,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:15,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986223955] [2023-11-23 21:30:15,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986223955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:15,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519199251] [2023-11-23 21:30:15,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:15,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:15,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:15,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:15,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:30:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:16,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 3194 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:30:16,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-23 21:30:16,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:16,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519199251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:16,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:16,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-23 21:30:16,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515277968] [2023-11-23 21:30:16,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:16,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:30:16,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:16,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:30:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:30:16,380 INFO L87 Difference]: Start difference. First operand 382 states and 542 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:17,376 INFO L93 Difference]: Finished difference Result 757 states and 1074 transitions. [2023-11-23 21:30:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:17,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 198 [2023-11-23 21:30:17,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:17,380 INFO L225 Difference]: With dead ends: 757 [2023-11-23 21:30:17,381 INFO L226 Difference]: Without dead ends: 386 [2023-11-23 21:30:17,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:30:17,383 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 18 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:17,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2244 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:30:17,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-23 21:30:17,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 382. [2023-11-23 21:30:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 193 states have (on average 1.160621761658031) internal successors, (224), 196 states have internal predecessors, (224), 158 states have call successors, (158), 28 states have call predecessors, (158), 29 states have return successors, (159), 157 states have call predecessors, (159), 157 states have call successors, (159) [2023-11-23 21:30:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 541 transitions. [2023-11-23 21:30:17,420 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 541 transitions. Word has length 198 [2023-11-23 21:30:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:17,420 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 541 transitions. [2023-11-23 21:30:17,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 541 transitions. [2023-11-23 21:30:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-23 21:30:17,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:17,425 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:17,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:17,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:17,650 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:17,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash 316872199, now seen corresponding path program 1 times [2023-11-23 21:30:17,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:17,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868504247] [2023-11-23 21:30:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:17,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-23 21:30:18,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868504247] [2023-11-23 21:30:18,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868504247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:18,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753286401] [2023-11-23 21:30:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:18,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:18,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:18,456 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:18,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:30:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:19,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 3198 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:30:19,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-23 21:30:19,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:19,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753286401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:19,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:19,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-23 21:30:19,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110577874] [2023-11-23 21:30:19,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:19,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:30:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:30:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:30:19,436 INFO L87 Difference]: Start difference. First operand 382 states and 541 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:20,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:20,551 INFO L93 Difference]: Finished difference Result 757 states and 1072 transitions. [2023-11-23 21:30:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:20,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 200 [2023-11-23 21:30:20,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:20,557 INFO L225 Difference]: With dead ends: 757 [2023-11-23 21:30:20,557 INFO L226 Difference]: Without dead ends: 386 [2023-11-23 21:30:20,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:30:20,561 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 15 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:20,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2692 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:30:20,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-23 21:30:20,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 382. [2023-11-23 21:30:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 193 states have (on average 1.1554404145077721) internal successors, (223), 196 states have internal predecessors, (223), 158 states have call successors, (158), 28 states have call predecessors, (158), 29 states have return successors, (159), 157 states have call predecessors, (159), 157 states have call successors, (159) [2023-11-23 21:30:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 540 transitions. [2023-11-23 21:30:20,590 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 540 transitions. Word has length 200 [2023-11-23 21:30:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:20,591 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 540 transitions. [2023-11-23 21:30:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 540 transitions. [2023-11-23 21:30:20,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-23 21:30:20,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:20,596 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:20,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:20,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:20,807 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:20,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:20,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1498293083, now seen corresponding path program 1 times [2023-11-23 21:30:20,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:20,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583354732] [2023-11-23 21:30:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:20,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-23 21:30:22,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583354732] [2023-11-23 21:30:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583354732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503854238] [2023-11-23 21:30:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:22,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:22,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:22,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:22,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:30:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:22,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:30:22,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-11-23 21:30:23,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:23,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503854238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:23,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:23,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2023-11-23 21:30:23,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371371967] [2023-11-23 21:30:23,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:23,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:30:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:23,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:30:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:30:23,056 INFO L87 Difference]: Start difference. First operand 382 states and 540 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-11-23 21:30:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:23,823 INFO L93 Difference]: Finished difference Result 739 states and 1084 transitions. [2023-11-23 21:30:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 202 [2023-11-23 21:30:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:23,827 INFO L225 Difference]: With dead ends: 739 [2023-11-23 21:30:23,828 INFO L226 Difference]: Without dead ends: 382 [2023-11-23 21:30:23,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:30:23,831 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 6 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:23,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2313 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:30:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-23 21:30:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2023-11-23 21:30:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 192 states have (on average 1.140625) internal successors, (219), 194 states have internal predecessors, (219), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 21:30:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 534 transitions. [2023-11-23 21:30:23,859 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 534 transitions. Word has length 202 [2023-11-23 21:30:23,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:23,860 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 534 transitions. [2023-11-23 21:30:23,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-11-23 21:30:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 534 transitions. [2023-11-23 21:30:23,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-23 21:30:23,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:23,865 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:23,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:24,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:24,092 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:24,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1059200044, now seen corresponding path program 1 times [2023-11-23 21:30:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176407584] [2023-11-23 21:30:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-23 21:30:25,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:25,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176407584] [2023-11-23 21:30:25,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176407584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:25,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984759802] [2023-11-23 21:30:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:25,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:25,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:25,381 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:25,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:30:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:26,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 3338 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:30:26,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-11-23 21:30:26,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:26,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984759802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:26,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:26,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-23 21:30:26,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727722660] [2023-11-23 21:30:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:26,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:30:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:26,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:30:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:30:26,423 INFO L87 Difference]: Start difference. First operand 380 states and 534 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:27,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:27,212 INFO L93 Difference]: Finished difference Result 729 states and 1064 transitions. [2023-11-23 21:30:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:27,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 234 [2023-11-23 21:30:27,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:27,217 INFO L225 Difference]: With dead ends: 729 [2023-11-23 21:30:27,217 INFO L226 Difference]: Without dead ends: 380 [2023-11-23 21:30:27,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:30:27,220 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 17 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:27,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2285 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:30:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-23 21:30:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-11-23 21:30:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 192 states have (on average 1.1354166666666667) internal successors, (218), 194 states have internal predecessors, (218), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 21:30:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 533 transitions. [2023-11-23 21:30:27,249 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 533 transitions. Word has length 234 [2023-11-23 21:30:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:27,249 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 533 transitions. [2023-11-23 21:30:27,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 533 transitions. [2023-11-23 21:30:27,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-23 21:30:27,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:27,254 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:27,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:27,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:27,479 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:27,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:27,480 INFO L85 PathProgramCache]: Analyzing trace with hash -927982026, now seen corresponding path program 1 times [2023-11-23 21:30:27,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:27,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569158218] [2023-11-23 21:30:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 5 proven. 104 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-23 21:30:28,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569158218] [2023-11-23 21:30:28,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569158218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946993442] [2023-11-23 21:30:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:28,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:28,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:28,787 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:28,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:30:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:29,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 3350 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:30:29,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-23 21:30:29,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946993442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:29,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:29,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-23 21:30:29,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11796214] [2023-11-23 21:30:29,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:29,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:30:29,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:29,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:30:29,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:30:29,857 INFO L87 Difference]: Start difference. First operand 380 states and 533 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:31,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:31,159 INFO L93 Difference]: Finished difference Result 731 states and 1064 transitions. [2023-11-23 21:30:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:31,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 240 [2023-11-23 21:30:31,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:31,164 INFO L225 Difference]: With dead ends: 731 [2023-11-23 21:30:31,164 INFO L226 Difference]: Without dead ends: 382 [2023-11-23 21:30:31,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:30:31,168 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 17 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:31,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2282 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:30:31,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-23 21:30:31,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2023-11-23 21:30:31,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 192 states have (on average 1.1302083333333333) internal successors, (217), 194 states have internal predecessors, (217), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 21:30:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 532 transitions. [2023-11-23 21:30:31,201 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 532 transitions. Word has length 240 [2023-11-23 21:30:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:31,202 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 532 transitions. [2023-11-23 21:30:31,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 532 transitions. [2023-11-23 21:30:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-23 21:30:31,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:31,208 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:31,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:31,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:30:31,423 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:31,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash 522705900, now seen corresponding path program 1 times [2023-11-23 21:30:31,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:31,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090343339] [2023-11-23 21:30:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:31,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 6 proven. 114 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2023-11-23 21:30:32,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:32,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090343339] [2023-11-23 21:30:32,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090343339] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:32,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952659787] [2023-11-23 21:30:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:32,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:32,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:32,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:32,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:30:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:33,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:30:33,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-23 21:30:33,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:33,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952659787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:33,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:33,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-23 21:30:33,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149851782] [2023-11-23 21:30:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:33,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:30:33,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:33,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:30:33,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:30:33,776 INFO L87 Difference]: Start difference. First operand 380 states and 532 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:34,614 INFO L93 Difference]: Finished difference Result 731 states and 1062 transitions. [2023-11-23 21:30:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:30:34,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 246 [2023-11-23 21:30:34,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:34,618 INFO L225 Difference]: With dead ends: 731 [2023-11-23 21:30:34,618 INFO L226 Difference]: Without dead ends: 382 [2023-11-23 21:30:34,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:30:34,622 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 14 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:34,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2735 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:30:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-23 21:30:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2023-11-23 21:30:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 192 states have (on average 1.125) internal successors, (216), 194 states have internal predecessors, (216), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 21:30:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 531 transitions. [2023-11-23 21:30:34,648 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 531 transitions. Word has length 246 [2023-11-23 21:30:34,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:34,649 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 531 transitions. [2023-11-23 21:30:34,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:30:34,649 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 531 transitions. [2023-11-23 21:30:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-23 21:30:34,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:34,651 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:34,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:34,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c98cd7-eaa0-410c-ae76-bae9a317d1e5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 21:30:34,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:34,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -377615122, now seen corresponding path program 1 times [2023-11-23 21:30:34,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:34,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544532701] [2023-11-23 21:30:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:34,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms