./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 0e0057cc 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_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/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_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-25 00:05:00,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:05:00,257 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:05:00,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:05:00,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:05:00,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:05:00,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:05:00,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:05:00,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:05:00,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:05:00,332 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:05:00,332 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:05:00,333 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:05:00,334 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:05:00,335 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:05:00,335 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:05:00,336 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:05:00,336 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:05:00,336 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:05:00,337 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:05:00,339 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:05:00,339 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:05:00,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:05:00,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:05:00,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:05:00,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:05:00,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:05:00,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:05:00,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:05:00,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:05:00,345 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:05:00,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:05:00,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:05:00,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:05:00,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:00,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:05:00,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:05:00,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:05:00,367 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:05:00,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:05:00,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:05:00,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:05:00,368 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:05:00,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:05:00,368 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_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b [2023-11-25 00:05:00,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:05:00,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:05:00,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:05:00,765 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:05:00,766 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:05:00,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2023-11-25 00:05:03,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:05:04,430 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:05:04,430 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2023-11-25 00:05:04,486 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/data/9c6e10c91/560b3345d5184661bd67f1f04a52b764/FLAGdbedc7880 [2023-11-25 00:05:04,505 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/data/9c6e10c91/560b3345d5184661bd67f1f04a52b764 [2023-11-25 00:05:04,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:05:04,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:05:04,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:04,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:05:04,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:05:04,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:04" (1/1) ... [2023-11-25 00:05:04,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346f99c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:04, skipping insertion in model container [2023-11-25 00:05:04,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:04" (1/1) ... [2023-11-25 00:05:04,670 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:05:04,963 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_a3ebd716-8a19-4603-bc8b-2122a3104bc4/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2023-11-25 00:05:04,974 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_a3ebd716-8a19-4603-bc8b-2122a3104bc4/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2023-11-25 00:05:06,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:06,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:06,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:06,455 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:06,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:06,473 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:06,474 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:06,476 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:06,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,055 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:05:07,056 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:05:07,057 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:05:07,059 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:05:07,060 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:05:07,061 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:05:07,064 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:05:07,065 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:05:07,066 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:05:07,070 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:05:07,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:07,656 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:05:07,670 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_a3ebd716-8a19-4603-bc8b-2122a3104bc4/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2023-11-25 00:05:07,670 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_a3ebd716-8a19-4603-bc8b-2122a3104bc4/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2023-11-25 00:05:07,726 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,728 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,731 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,732 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,747 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,747 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,751 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,800 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:05:07,801 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:05:07,802 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:05:07,811 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:05:07,814 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:05:07,815 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:05:07,816 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:05:07,816 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:05:07,817 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:05:07,818 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:05:07,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-25 00:05:07,940 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,941 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:07,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8989-9000] [2023-11-25 00:05:08,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:08,338 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,338 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,338 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,339 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,339 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,339 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,339 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,339 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,339 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,340 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,340 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,340 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,340 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,340 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,340 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,341 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,341 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,341 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:08,349 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:05:08,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08 WrapperNode [2023-11-25 00:05:08,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:08,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:08,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:05:08,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:05:08,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,581 INFO L138 Inliner]: procedures = 694, calls = 2926, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1196 [2023-11-25 00:05:08,591 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:08,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:05:08,592 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:05:08,592 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:05:08,600 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:05:08,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:05:08,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:05:08,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:05:08,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (1/1) ... [2023-11-25 00:05:08,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:08,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:08,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:05:08,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:05:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-25 00:05:08,881 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-25 00:05:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2023-11-25 00:05:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2023-11-25 00:05:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:05:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:05:08,881 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:05:08,882 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2023-11-25 00:05:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2023-11-25 00:05:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:05:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:05:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:05:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:05:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:05:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:05:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:05:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:05:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2023-11-25 00:05:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2023-11-25 00:05:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:05:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:05:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:05:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:05:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2023-11-25 00:05:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2023-11-25 00:05:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:05:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:05:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2023-11-25 00:05:08,886 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2023-11-25 00:05:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:05:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:05:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:05:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2023-11-25 00:05:08,888 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2023-11-25 00:05:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2023-11-25 00:05:08,888 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2023-11-25 00:05:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:05:08,888 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:05:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2023-11-25 00:05:08,888 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2023-11-25 00:05:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2023-11-25 00:05:08,889 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2023-11-25 00:05:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-25 00:05:08,889 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-25 00:05:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:05:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2023-11-25 00:05:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2023-11-25 00:05:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2023-11-25 00:05:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2023-11-25 00:05:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2023-11-25 00:05:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2023-11-25 00:05:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2023-11-25 00:05:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2023-11-25 00:05:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:05:09,302 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:05:09,305 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:05:11,110 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:05:11,499 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:05:11,499 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:05:11,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:11 BoogieIcfgContainer [2023-11-25 00:05:11,501 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:05:11,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:05:11,504 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:05:11,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:05:11,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:05:04" (1/3) ... [2023-11-25 00:05:11,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202a6084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:11, skipping insertion in model container [2023-11-25 00:05:11,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:08" (2/3) ... [2023-11-25 00:05:11,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202a6084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:11, skipping insertion in model container [2023-11-25 00:05:11,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:11" (3/3) ... [2023-11-25 00:05:11,510 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_up_to_harness.i [2023-11-25 00:05:11,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:05:11,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:05:11,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:05:11,594 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;@4c414266, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:05:11,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:05:11,600 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) [2023-11-25 00:05:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-25 00:05:11,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:11,611 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] [2023-11-25 00:05:11,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:11,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash 939560079, now seen corresponding path program 1 times [2023-11-25 00:05:11,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:11,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813498332] [2023-11-25 00:05:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:11,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-25 00:05:13,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:13,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813498332] [2023-11-25 00:05:13,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813498332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:13,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:13,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:05:13,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946712848] [2023-11-25 00:05:13,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:13,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:13,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:13,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:05:13,112 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) [2023-11-25 00:05:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:14,797 INFO L93 Difference]: Finished difference Result 680 states and 1102 transitions. [2023-11-25 00:05:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:14,800 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 [2023-11-25 00:05:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:14,815 INFO L225 Difference]: With dead ends: 680 [2023-11-25 00:05:14,815 INFO L226 Difference]: Without dead ends: 351 [2023-11-25 00:05:14,826 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 [2023-11-25 00:05:14,830 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 26 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:14,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2769 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-25 00:05:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-25 00:05:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-11-25 00:05:14,959 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) [2023-11-25 00:05:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 510 transitions. [2023-11-25 00:05:14,970 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 510 transitions. Word has length 41 [2023-11-25 00:05:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:14,971 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 510 transitions. [2023-11-25 00:05:14,971 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) [2023-11-25 00:05:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 510 transitions. [2023-11-25 00:05:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-25 00:05:14,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:14,977 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] [2023-11-25 00:05:14,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:05:14,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:14,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1863856318, now seen corresponding path program 1 times [2023-11-25 00:05:14,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:14,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794825756] [2023-11-25 00:05:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:14,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-25 00:05:15,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:15,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794825756] [2023-11-25 00:05:15,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794825756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:15,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313300881] [2023-11-25 00:05:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:15,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:15,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:15,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:15,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:05:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:16,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-25 00:05:16,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-25 00:05:16,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:16,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313300881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:16,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:16,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-25 00:05:16,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25875068] [2023-11-25 00:05:16,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:16,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:16,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:16,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:16,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:05:16,727 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) [2023-11-25 00:05:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:18,481 INFO L93 Difference]: Finished difference Result 366 states and 528 transitions. [2023-11-25 00:05:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:18,481 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 [2023-11-25 00:05:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:18,487 INFO L225 Difference]: With dead ends: 366 [2023-11-25 00:05:18,487 INFO L226 Difference]: Without dead ends: 363 [2023-11-25 00:05:18,488 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 [2023-11-25 00:05:18,489 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 24 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:18,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2801 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-25 00:05:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-25 00:05:18,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2023-11-25 00:05:18,543 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) [2023-11-25 00:05:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 525 transitions. [2023-11-25 00:05:18,548 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 525 transitions. Word has length 71 [2023-11-25 00:05:18,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:18,549 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 525 transitions. [2023-11-25 00:05:18,549 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) [2023-11-25 00:05:18,550 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 525 transitions. [2023-11-25 00:05:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-25 00:05:18,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:18,555 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] [2023-11-25 00:05:18,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:18,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:18,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:18,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1266238832, now seen corresponding path program 1 times [2023-11-25 00:05:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909777142] [2023-11-25 00:05:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-11-25 00:05:19,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:19,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909777142] [2023-11-25 00:05:19,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909777142] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:19,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160210479] [2023-11-25 00:05:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:19,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:19,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:19,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:19,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:05:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:20,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-25 00:05:20,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-25 00:05:20,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160210479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:20,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:20,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-25 00:05:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257580764] [2023-11-25 00:05:20,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:20,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:05:20,779 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) [2023-11-25 00:05:22,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:22,036 INFO L93 Difference]: Finished difference Result 661 states and 959 transitions. [2023-11-25 00:05:22,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:22,036 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 [2023-11-25 00:05:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:22,042 INFO L225 Difference]: With dead ends: 661 [2023-11-25 00:05:22,042 INFO L226 Difference]: Without dead ends: 372 [2023-11-25 00:05:22,044 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 [2023-11-25 00:05:22,045 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 15 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:22,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2805 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-25 00:05:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-25 00:05:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2023-11-25 00:05:22,070 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) [2023-11-25 00:05:22,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 534 transitions. [2023-11-25 00:05:22,075 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 534 transitions. Word has length 188 [2023-11-25 00:05:22,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:22,077 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 534 transitions. [2023-11-25 00:05:22,077 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) [2023-11-25 00:05:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 534 transitions. [2023-11-25 00:05:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-25 00:05:22,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:22,081 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] [2023-11-25 00:05:22,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:22,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:22,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:22,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash -534796693, now seen corresponding path program 1 times [2023-11-25 00:05:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:22,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781659146] [2023-11-25 00:05:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:22,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-25 00:05:23,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781659146] [2023-11-25 00:05:23,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781659146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:23,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306029590] [2023-11-25 00:05:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:23,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:23,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:23,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:23,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:05:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:24,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-25 00:05:24,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-25 00:05:24,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306029590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:24,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:24,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-11-25 00:05:24,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804030797] [2023-11-25 00:05:24,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:24,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:05:24,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:05:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:05:24,287 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) [2023-11-25 00:05:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:25,860 INFO L93 Difference]: Finished difference Result 745 states and 1075 transitions. [2023-11-25 00:05:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:25,861 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 [2023-11-25 00:05:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:25,867 INFO L225 Difference]: With dead ends: 745 [2023-11-25 00:05:25,867 INFO L226 Difference]: Without dead ends: 384 [2023-11-25 00:05:25,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:25,870 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 6 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:25,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2270 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-25 00:05:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-25 00:05:25,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 380. [2023-11-25 00:05:25,894 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) [2023-11-25 00:05:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 541 transitions. [2023-11-25 00:05:25,898 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 541 transitions. Word has length 194 [2023-11-25 00:05:25,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:25,899 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 541 transitions. [2023-11-25 00:05:25,899 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) [2023-11-25 00:05:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 541 transitions. [2023-11-25 00:05:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-25 00:05:25,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:25,903 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] [2023-11-25 00:05:25,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:26,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:26,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:26,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:26,117 INFO L85 PathProgramCache]: Analyzing trace with hash 5759239, now seen corresponding path program 1 times [2023-11-25 00:05:26,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:26,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141783814] [2023-11-25 00:05:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:26,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-25 00:05:27,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141783814] [2023-11-25 00:05:27,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141783814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845422686] [2023-11-25 00:05:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:27,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:27,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:27,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:27,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:05:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:27,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:05:27,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-25 00:05:28,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:28,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845422686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:28,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:28,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-25 00:05:28,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021244543] [2023-11-25 00:05:28,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:28,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:28,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:28,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:28,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:05:28,153 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) [2023-11-25 00:05:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:29,445 INFO L93 Difference]: Finished difference Result 755 states and 1074 transitions. [2023-11-25 00:05:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:29,446 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 [2023-11-25 00:05:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:29,450 INFO L225 Difference]: With dead ends: 755 [2023-11-25 00:05:29,450 INFO L226 Difference]: Without dead ends: 384 [2023-11-25 00:05:29,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:05:29,453 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 18 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:29,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2247 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-25 00:05:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-25 00:05:29,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2023-11-25 00:05:29,477 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) [2023-11-25 00:05:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 542 transitions. [2023-11-25 00:05:29,481 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 542 transitions. Word has length 196 [2023-11-25 00:05:29,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:29,482 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 542 transitions. [2023-11-25 00:05:29,482 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) [2023-11-25 00:05:29,483 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 542 transitions. [2023-11-25 00:05:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-11-25 00:05:29,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:29,486 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] [2023-11-25 00:05:29,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:29,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:29,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1507929117, now seen corresponding path program 1 times [2023-11-25 00:05:29,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:29,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477286988] [2023-11-25 00:05:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:29,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-25 00:05:30,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477286988] [2023-11-25 00:05:30,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477286988] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4920257] [2023-11-25 00:05:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:30,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:30,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:30,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:30,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:05:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:31,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 3194 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:05:31,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-25 00:05:31,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:31,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4920257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:31,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:31,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-25 00:05:31,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676114479] [2023-11-25 00:05:31,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:31,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:05:31,630 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) [2023-11-25 00:05:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:33,050 INFO L93 Difference]: Finished difference Result 757 states and 1074 transitions. [2023-11-25 00:05:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:33,051 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 [2023-11-25 00:05:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:33,055 INFO L225 Difference]: With dead ends: 757 [2023-11-25 00:05:33,055 INFO L226 Difference]: Without dead ends: 386 [2023-11-25 00:05:33,058 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 [2023-11-25 00:05:33,059 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 18 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:33,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2244 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-25 00:05:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-25 00:05:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 382. [2023-11-25 00:05:33,126 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) [2023-11-25 00:05:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 541 transitions. [2023-11-25 00:05:33,134 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 541 transitions. Word has length 198 [2023-11-25 00:05:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:33,135 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 541 transitions. [2023-11-25 00:05:33,136 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) [2023-11-25 00:05:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 541 transitions. [2023-11-25 00:05:33,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-25 00:05:33,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:33,141 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] [2023-11-25 00:05:33,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:33,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:33,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:33,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:33,353 INFO L85 PathProgramCache]: Analyzing trace with hash 316872199, now seen corresponding path program 1 times [2023-11-25 00:05:33,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:33,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379981737] [2023-11-25 00:05:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:33,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-25 00:05:34,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379981737] [2023-11-25 00:05:34,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379981737] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302556518] [2023-11-25 00:05:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:34,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:34,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:34,311 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:34,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-25 00:05:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:35,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 3198 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:05:35,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-25 00:05:35,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:35,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302556518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:35,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:35,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-25 00:05:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470489304] [2023-11-25 00:05:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:35,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:05:35,373 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) [2023-11-25 00:05:36,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:36,494 INFO L93 Difference]: Finished difference Result 757 states and 1072 transitions. [2023-11-25 00:05:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:36,495 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 [2023-11-25 00:05:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:36,499 INFO L225 Difference]: With dead ends: 757 [2023-11-25 00:05:36,500 INFO L226 Difference]: Without dead ends: 386 [2023-11-25 00:05:36,502 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 [2023-11-25 00:05:36,503 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 [2023-11-25 00:05:36,504 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] [2023-11-25 00:05:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-25 00:05:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 382. [2023-11-25 00:05:36,527 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) [2023-11-25 00:05:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 540 transitions. [2023-11-25 00:05:36,531 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 540 transitions. Word has length 200 [2023-11-25 00:05:36,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:36,532 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 540 transitions. [2023-11-25 00:05:36,532 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) [2023-11-25 00:05:36,533 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 540 transitions. [2023-11-25 00:05:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-25 00:05:36,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:36,538 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] [2023-11-25 00:05:36,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:36,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-25 00:05:36,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:36,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1498293083, now seen corresponding path program 1 times [2023-11-25 00:05:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:36,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150841649] [2023-11-25 00:05:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:36,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-25 00:05:37,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:37,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150841649] [2023-11-25 00:05:37,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150841649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:37,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489324928] [2023-11-25 00:05:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:37,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:37,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:37,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:37,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-25 00:05:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:38,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-25 00:05:38,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-11-25 00:05:38,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:38,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489324928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:38,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:38,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2023-11-25 00:05:38,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654244370] [2023-11-25 00:05:38,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:38,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:05:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:38,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:05:38,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:05:38,950 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) [2023-11-25 00:05:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:40,308 INFO L93 Difference]: Finished difference Result 739 states and 1084 transitions. [2023-11-25 00:05:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:40,309 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 [2023-11-25 00:05:40,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:40,313 INFO L225 Difference]: With dead ends: 739 [2023-11-25 00:05:40,314 INFO L226 Difference]: Without dead ends: 382 [2023-11-25 00:05:40,316 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 [2023-11-25 00:05:40,317 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 6 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:40,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2313 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-25 00:05:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-25 00:05:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2023-11-25 00:05:40,338 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) [2023-11-25 00:05:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 534 transitions. [2023-11-25 00:05:40,342 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 534 transitions. Word has length 202 [2023-11-25 00:05:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:40,343 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 534 transitions. [2023-11-25 00:05:40,343 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) [2023-11-25 00:05:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 534 transitions. [2023-11-25 00:05:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-25 00:05:40,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:40,347 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] [2023-11-25 00:05:40,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:40,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-25 00:05:40,559 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:40,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1059200044, now seen corresponding path program 1 times [2023-11-25 00:05:40,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:40,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340569951] [2023-11-25 00:05:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:40,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-25 00:05:41,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:41,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340569951] [2023-11-25 00:05:41,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340569951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:41,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613193673] [2023-11-25 00:05:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:41,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:41,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:41,947 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:41,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-25 00:05:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:42,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 3338 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:05:42,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-11-25 00:05:42,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:42,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613193673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:42,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:42,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-25 00:05:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980668794] [2023-11-25 00:05:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:42,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:42,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:42,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-25 00:05:42,995 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) [2023-11-25 00:05:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:43,862 INFO L93 Difference]: Finished difference Result 729 states and 1064 transitions. [2023-11-25 00:05:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:43,863 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 [2023-11-25 00:05:43,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:43,866 INFO L225 Difference]: With dead ends: 729 [2023-11-25 00:05:43,867 INFO L226 Difference]: Without dead ends: 380 [2023-11-25 00:05:43,869 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 [2023-11-25 00:05:43,870 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, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:43,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2285 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:05:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-25 00:05:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-11-25 00:05:43,889 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) [2023-11-25 00:05:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 533 transitions. [2023-11-25 00:05:43,893 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 533 transitions. Word has length 234 [2023-11-25 00:05:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:43,894 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 533 transitions. [2023-11-25 00:05:43,894 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) [2023-11-25 00:05:43,894 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 533 transitions. [2023-11-25 00:05:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-25 00:05:43,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:43,898 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] [2023-11-25 00:05:43,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:44,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:44,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:44,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -927982026, now seen corresponding path program 1 times [2023-11-25 00:05:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527126006] [2023-11-25 00:05:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:44,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 5 proven. 104 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-25 00:05:45,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527126006] [2023-11-25 00:05:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527126006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:45,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333554805] [2023-11-25 00:05:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:45,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:45,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:45,513 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:45,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-25 00:05:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:46,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 3350 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:05:46,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-25 00:05:46,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:46,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333554805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:46,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:46,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-25 00:05:46,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713364274] [2023-11-25 00:05:46,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:46,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:46,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:46,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-25 00:05:46,593 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) [2023-11-25 00:05:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:48,253 INFO L93 Difference]: Finished difference Result 731 states and 1064 transitions. [2023-11-25 00:05:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:05:48,254 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 [2023-11-25 00:05:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:48,258 INFO L225 Difference]: With dead ends: 731 [2023-11-25 00:05:48,259 INFO L226 Difference]: Without dead ends: 382 [2023-11-25 00:05:48,261 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 [2023-11-25 00:05:48,262 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 17 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:48,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2282 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-25 00:05:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-25 00:05:48,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2023-11-25 00:05:48,287 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) [2023-11-25 00:05:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 532 transitions. [2023-11-25 00:05:48,291 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 532 transitions. Word has length 240 [2023-11-25 00:05:48,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:48,292 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 532 transitions. [2023-11-25 00:05:48,292 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) [2023-11-25 00:05:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 532 transitions. [2023-11-25 00:05:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-25 00:05:48,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:48,296 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] [2023-11-25 00:05:48,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-25 00:05:48,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ebd716-8a19-4603-bc8b-2122a3104bc4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-25 00:05:48,515 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:48,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:48,516 INFO L85 PathProgramCache]: Analyzing trace with hash 522705900, now seen corresponding path program 1 times [2023-11-25 00:05:48,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:48,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057212323] [2023-11-25 00:05:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat