./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_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_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh --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 80528f4a8c519f417b5556e2d2458b4054f2fa1ae1a14cd2db000a7ac77b495e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:03:51,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:03:52,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 18:03:52,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:03:52,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:03:52,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:03:52,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:03:52,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:03:52,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:03:52,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:03:52,092 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:03:52,093 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:03:52,093 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:03:52,094 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:03:52,094 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:03:52,095 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:03:52,095 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:03:52,096 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:03:52,096 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:03:52,097 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:03:52,097 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:03:52,098 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:03:52,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:03:52,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:03:52,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:03:52,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:03:52,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:03:52,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:03:52,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:03:52,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:03:52,102 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:03:52,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:03:52,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:03:52,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:03:52,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:03:52,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:03:52,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:03:52,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:03:52,104 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:03:52,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:03:52,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:03:52,105 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:03:52,105 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:03:52,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:03:52,105 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_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80528f4a8c519f417b5556e2d2458b4054f2fa1ae1a14cd2db000a7ac77b495e [2023-12-02 18:03:52,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:03:52,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:03:52,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:03:52,327 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:03:52,328 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:03:52,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i [2023-12-02 18:03:55,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:03:55,788 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:03:55,789 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i [2023-12-02 18:03:55,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/data/f9908837f/d4695ffd63204702a7cd0ad5ac51cdfc/FLAG6f9cc0c04 [2023-12-02 18:03:55,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/data/f9908837f/d4695ffd63204702a7cd0ad5ac51cdfc [2023-12-02 18:03:55,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:03:55,846 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:03:55,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:03:55,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:03:55,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:03:55,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:03:55" (1/1) ... [2023-12-02 18:03:55,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f992ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:55, skipping insertion in model container [2023-12-02 18:03:55,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:03:55" (1/1) ... [2023-12-02 18:03:55,999 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:03:56,219 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_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i[4497,4510] [2023-12-02 18:03:56,227 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_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i[4557,4570] [2023-12-02 18:03:57,254 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:57,255 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:57,256 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:57,257 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:57,258 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:57,283 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:57,284 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:57,286 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:57,286 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:57,753 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 18:03:57,754 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 18:03:57,755 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 18:03:57,756 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 18:03:57,758 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 18:03:57,759 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 18:03:57,759 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 18:03:57,760 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 18:03:57,760 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 18:03:57,761 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 18:03:58,017 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,018 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:03:58,152 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:03:58,164 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_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i[4497,4510] [2023-12-02 18:03:58,164 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_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i[4557,4570] [2023-12-02 18:03:58,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,201 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,205 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,206 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,207 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,207 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,265 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 18:03:58,266 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 18:03:58,267 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 18:03:58,267 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 18:03:58,268 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 18:03:58,269 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 18:03:58,269 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 18:03:58,270 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 18:03:58,270 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 18:03:58,271 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 18:03:58,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-12-02 18:03:58,342 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,343 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:03:58,368 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8995-9006] [2023-12-02 18:03:58,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:03:58,568 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,568 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,568 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,569 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,569 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,569 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,569 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,569 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,569 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,569 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,569 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,570 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,570 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,570 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,570 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,570 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,570 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,570 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:58,578 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:03:58,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58 WrapperNode [2023-12-02 18:03:58,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:03:58,579 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:03:58,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:03:58,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:03:58,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,722 INFO L138 Inliner]: procedures = 694, calls = 2945, calls flagged for inlining = 60, calls inlined = 9, statements flattened = 1012 [2023-12-02 18:03:58,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:03:58,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:03:58,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:03:58,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:03:58,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:03:58,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:03:58,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:03:58,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:03:58,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (1/1) ... [2023-12-02 18:03:58,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:03:58,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:03:58,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:03:58,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:03:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-12-02 18:03:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-12-02 18:03:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2023-12-02 18:03:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2023-12-02 18:03:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:03:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 18:03:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 18:03:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2023-12-02 18:03:58,915 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2023-12-02 18:03:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member_in_range [2023-12-02 18:03:58,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member_in_range [2023-12-02 18:03:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:03:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure is_empty_state [2023-12-02 18:03:58,915 INFO L138 BoogieDeclarations]: Found implementation of procedure is_empty_state [2023-12-02 18:03:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:03:58,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:03:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:03:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:03:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:03:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2023-12-02 18:03:58,916 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2023-12-02 18:03:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:03:58,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:03:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 18:03:58,916 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 18:03:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2023-12-02 18:03:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2023-12-02 18:03:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 18:03:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 18:03:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:03:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:03:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:03:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:03:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 18:03:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2023-12-02 18:03:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2023-12-02 18:03:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 18:03:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 18:03:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2023-12-02 18:03:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2023-12-02 18:03:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2023-12-02 18:03:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2023-12-02 18:03:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-12-02 18:03:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-12-02 18:03:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2023-12-02 18:03:58,919 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2023-12-02 18:03:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2023-12-02 18:03:58,919 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2023-12-02 18:03:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2023-12-02 18:03:58,919 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2023-12-02 18:03:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2023-12-02 18:03:58,919 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2023-12-02 18:03:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:03:59,193 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:03:59,196 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:04:00,268 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:04:00,650 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:04:00,650 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 18:04:00,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:04:00 BoogieIcfgContainer [2023-12-02 18:04:00,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:04:00,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:04:00,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:04:00,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:04:00,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:03:55" (1/3) ... [2023-12-02 18:04:00,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2522100f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:04:00, skipping insertion in model container [2023-12-02 18:04:00,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:58" (2/3) ... [2023-12-02 18:04:00,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2522100f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:04:00, skipping insertion in model container [2023-12-02 18:04:00,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:04:00" (3/3) ... [2023-12-02 18:04:00,660 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_release_harness.i [2023-12-02 18:04:00,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:04:00,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 18:04:00,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:04:00,739 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;@58aeb1d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:04:00,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 18:04:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 131 states have internal predecessors, (151), 87 states have call successors, (87), 20 states have call predecessors, (87), 20 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 18:04:00,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:00,754 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] [2023-12-02 18:04:00,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:00,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1645442134, now seen corresponding path program 1 times [2023-12-02 18:04:00,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:00,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393153869] [2023-12-02 18:04:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:04:01,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393153869] [2023-12-02 18:04:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393153869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:04:01,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 18:04:01,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75681222] [2023-12-02 18:04:01,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:01,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:04:01,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:04:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:04:01,685 INFO L87 Difference]: Start difference. First operand has 238 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 131 states have internal predecessors, (151), 87 states have call successors, (87), 20 states have call predecessors, (87), 20 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) 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) [2023-12-02 18:04:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:02,700 INFO L93 Difference]: Finished difference Result 470 states and 701 transitions. [2023-12-02 18:04:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:04:02,702 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 [2023-12-02 18:04:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:02,714 INFO L225 Difference]: With dead ends: 470 [2023-12-02 18:04:02,714 INFO L226 Difference]: Without dead ends: 247 [2023-12-02 18:04:02,720 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 [2023-12-02 18:04:02,724 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 26 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:02,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1707 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:04:02,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-02 18:04:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-12-02 18:04:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 135 states have (on average 1.162962962962963) internal successors, (157), 138 states have internal predecessors, (157), 88 states have call successors, (88), 22 states have call predecessors, (88), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 332 transitions. [2023-12-02 18:04:02,795 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 332 transitions. Word has length 41 [2023-12-02 18:04:02,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:02,797 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 332 transitions. [2023-12-02 18:04:02,797 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) [2023-12-02 18:04:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 332 transitions. [2023-12-02 18:04:02,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 18:04:02,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:02,801 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] [2023-12-02 18:04:02,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:04:02,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:02,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:02,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1347173532, now seen corresponding path program 1 times [2023-12-02 18:04:02,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:02,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779583539] [2023-12-02 18:04:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:02,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:04:03,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779583539] [2023-12-02 18:04:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779583539] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34513899] [2023-12-02 18:04:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:03,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:03,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:03,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:03,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:04:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:04,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 18:04:04,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:04:04,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:04:04,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34513899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:04,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:04,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-02 18:04:04,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227697895] [2023-12-02 18:04:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:04,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:04:04,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:04,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:04:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:04:04,214 INFO L87 Difference]: Start difference. First operand 247 states and 332 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-02 18:04:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:04,967 INFO L93 Difference]: Finished difference Result 258 states and 346 transitions. [2023-12-02 18:04:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:04:04,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 69 [2023-12-02 18:04:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:04,972 INFO L225 Difference]: With dead ends: 258 [2023-12-02 18:04:04,972 INFO L226 Difference]: Without dead ends: 255 [2023-12-02 18:04:04,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 18:04:04,974 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 24 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:04,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1733 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 18:04:04,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-02 18:04:04,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-12-02 18:04:04,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1830985915492958) internal successors, (168), 145 states have internal predecessors, (168), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 343 transitions. [2023-12-02 18:04:05,003 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 343 transitions. Word has length 69 [2023-12-02 18:04:05,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:05,004 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 343 transitions. [2023-12-02 18:04:05,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-02 18:04:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 343 transitions. [2023-12-02 18:04:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-02 18:04:05,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:05,008 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:05,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:04:05,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:05,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:05,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:05,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1437271355, now seen corresponding path program 1 times [2023-12-02 18:04:05,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:05,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688968338] [2023-12-02 18:04:05,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:05,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-02 18:04:05,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688968338] [2023-12-02 18:04:05,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688968338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560935124] [2023-12-02 18:04:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:05,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:05,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:05,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:05,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:04:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:06,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 18:04:06,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-02 18:04:06,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:04:06,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560935124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:06,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:06,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-12-02 18:04:06,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789678512] [2023-12-02 18:04:06,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:06,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:04:06,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:06,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:04:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:04:06,621 INFO L87 Difference]: Start difference. First operand 255 states and 343 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:07,201 INFO L93 Difference]: Finished difference Result 503 states and 674 transitions. [2023-12-02 18:04:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:04:07,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 171 [2023-12-02 18:04:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:07,206 INFO L225 Difference]: With dead ends: 503 [2023-12-02 18:04:07,206 INFO L226 Difference]: Without dead ends: 257 [2023-12-02 18:04:07,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:04:07,209 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 4 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:07,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1419 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:04:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-02 18:04:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-12-02 18:04:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 145 states have internal predecessors, (166), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 341 transitions. [2023-12-02 18:04:07,229 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 341 transitions. Word has length 171 [2023-12-02 18:04:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:07,229 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 341 transitions. [2023-12-02 18:04:07,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 341 transitions. [2023-12-02 18:04:07,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-02 18:04:07,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:07,232 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:07,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:04:07,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:07,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:07,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1057672625, now seen corresponding path program 1 times [2023-12-02 18:04:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791814355] [2023-12-02 18:04:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:07,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-02 18:04:08,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:08,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791814355] [2023-12-02 18:04:08,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791814355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:08,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985474552] [2023-12-02 18:04:08,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:08,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:08,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:08,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:08,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:04:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:08,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 3042 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:04:08,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-02 18:04:08,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:04:08,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985474552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:08,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:08,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-02 18:04:08,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963547197] [2023-12-02 18:04:08,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:08,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:04:08,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:08,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:04:08,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:04:08,845 INFO L87 Difference]: Start difference. First operand 255 states and 341 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:09,903 INFO L93 Difference]: Finished difference Result 503 states and 670 transitions. [2023-12-02 18:04:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:04:09,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 173 [2023-12-02 18:04:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:09,905 INFO L225 Difference]: With dead ends: 503 [2023-12-02 18:04:09,905 INFO L226 Difference]: Without dead ends: 257 [2023-12-02 18:04:09,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-02 18:04:09,908 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 16 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:09,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1677 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:04:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-02 18:04:09,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-12-02 18:04:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1549295774647887) internal successors, (164), 145 states have internal predecessors, (164), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 339 transitions. [2023-12-02 18:04:09,929 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 339 transitions. Word has length 173 [2023-12-02 18:04:09,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:09,929 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 339 transitions. [2023-12-02 18:04:09,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 339 transitions. [2023-12-02 18:04:09,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 18:04:09,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:09,933 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:09,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:04:10,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:10,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:10,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1015497421, now seen corresponding path program 1 times [2023-12-02 18:04:10,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:10,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922113423] [2023-12-02 18:04:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:10,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-02 18:04:10,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922113423] [2023-12-02 18:04:10,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922113423] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:10,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323820683] [2023-12-02 18:04:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:10,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:10,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:10,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:10,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:04:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:11,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:04:11,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-02 18:04:11,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:04:11,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323820683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:11,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:11,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-02 18:04:11,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886891092] [2023-12-02 18:04:11,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:11,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:04:11,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:04:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:04:11,528 INFO L87 Difference]: Start difference. First operand 255 states and 339 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:12,470 INFO L93 Difference]: Finished difference Result 501 states and 664 transitions. [2023-12-02 18:04:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:04:12,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 175 [2023-12-02 18:04:12,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:12,473 INFO L225 Difference]: With dead ends: 501 [2023-12-02 18:04:12,473 INFO L226 Difference]: Without dead ends: 259 [2023-12-02 18:04:12,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-02 18:04:12,475 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 16 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:12,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1676 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:04:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-02 18:04:12,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2023-12-02 18:04:12,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.147887323943662) internal successors, (163), 145 states have internal predecessors, (163), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2023-12-02 18:04:12,493 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 175 [2023-12-02 18:04:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:12,494 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2023-12-02 18:04:12,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:12,494 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2023-12-02 18:04:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-02 18:04:12,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:12,497 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:12,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 18:04:12,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:12,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:12,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1395796687, now seen corresponding path program 1 times [2023-12-02 18:04:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:12,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844938433] [2023-12-02 18:04:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:12,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-02 18:04:13,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:13,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844938433] [2023-12-02 18:04:13,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844938433] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:13,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664813664] [2023-12-02 18:04:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:13,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:13,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:13,348 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:13,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:04:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:14,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:04:14,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-02 18:04:14,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:04:14,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664813664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:14,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:14,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-02 18:04:14,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116749622] [2023-12-02 18:04:14,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:14,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:04:14,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:14,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:04:14,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:04:14,133 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:14,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:14,951 INFO L93 Difference]: Finished difference Result 501 states and 662 transitions. [2023-12-02 18:04:14,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:04:14,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 177 [2023-12-02 18:04:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:14,954 INFO L225 Difference]: With dead ends: 501 [2023-12-02 18:04:14,954 INFO L226 Difference]: Without dead ends: 259 [2023-12-02 18:04:14,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-02 18:04:14,955 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 18 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:14,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1393 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 18:04:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-02 18:04:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2023-12-02 18:04:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1408450704225352) internal successors, (162), 145 states have internal predecessors, (162), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 337 transitions. [2023-12-02 18:04:14,972 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 337 transitions. Word has length 177 [2023-12-02 18:04:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:14,972 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 337 transitions. [2023-12-02 18:04:14,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 337 transitions. [2023-12-02 18:04:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-02 18:04:14,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:14,975 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:14,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 18:04:15,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:15,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:15,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1083004715, now seen corresponding path program 1 times [2023-12-02 18:04:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068456254] [2023-12-02 18:04:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-12-02 18:04:15,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:15,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068456254] [2023-12-02 18:04:15,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068456254] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:15,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516439716] [2023-12-02 18:04:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:15,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:15,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:04:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:16,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 18:04:16,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-02 18:04:16,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:04:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516439716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:16,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:16,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2023-12-02 18:04:16,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341717137] [2023-12-02 18:04:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:16,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:04:16,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:16,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:04:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:04:16,627 INFO L87 Difference]: Start difference. First operand 255 states and 337 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:17,295 INFO L93 Difference]: Finished difference Result 477 states and 665 transitions. [2023-12-02 18:04:17,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:04:17,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 179 [2023-12-02 18:04:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:17,298 INFO L225 Difference]: With dead ends: 477 [2023-12-02 18:04:17,298 INFO L226 Difference]: Without dead ends: 255 [2023-12-02 18:04:17,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-02 18:04:17,300 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 4 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:17,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1434 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:04:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-02 18:04:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-12-02 18:04:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 145 states have internal predecessors, (161), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 336 transitions. [2023-12-02 18:04:17,311 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 336 transitions. Word has length 179 [2023-12-02 18:04:17,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:17,312 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 336 transitions. [2023-12-02 18:04:17,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 336 transitions. [2023-12-02 18:04:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-02 18:04:17,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:17,315 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:17,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 18:04:17,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:17,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:17,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:17,516 INFO L85 PathProgramCache]: Analyzing trace with hash 714248761, now seen corresponding path program 1 times [2023-12-02 18:04:17,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:17,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750812442] [2023-12-02 18:04:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:17,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 78 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-12-02 18:04:18,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:18,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750812442] [2023-12-02 18:04:18,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750812442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:18,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352314719] [2023-12-02 18:04:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:18,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:18,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:18,372 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:18,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:04:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:19,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:04:19,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-12-02 18:04:19,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:04:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352314719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:19,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-02 18:04:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577626791] [2023-12-02 18:04:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:19,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:04:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:04:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-02 18:04:19,171 INFO L87 Difference]: Start difference. First operand 255 states and 336 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:20,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:20,082 INFO L93 Difference]: Finished difference Result 477 states and 663 transitions. [2023-12-02 18:04:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:04:20,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 185 [2023-12-02 18:04:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:20,086 INFO L225 Difference]: With dead ends: 477 [2023-12-02 18:04:20,086 INFO L226 Difference]: Without dead ends: 255 [2023-12-02 18:04:20,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-02 18:04:20,088 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 14 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:20,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1406 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:04:20,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-02 18:04:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-12-02 18:04:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1267605633802817) internal successors, (160), 145 states have internal predecessors, (160), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 335 transitions. [2023-12-02 18:04:20,099 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 335 transitions. Word has length 185 [2023-12-02 18:04:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:20,099 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 335 transitions. [2023-12-02 18:04:20,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 335 transitions. [2023-12-02 18:04:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-02 18:04:20,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:20,101 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:20,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:04:20,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:20,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:20,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1863912595, now seen corresponding path program 1 times [2023-12-02 18:04:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138158359] [2023-12-02 18:04:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 5 proven. 88 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-02 18:04:21,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:21,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138158359] [2023-12-02 18:04:21,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138158359] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:21,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620098691] [2023-12-02 18:04:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:21,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:21,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:21,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:21,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 18:04:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:21,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:04:21,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-02 18:04:21,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:04:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620098691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:21,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-02 18:04:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203256505] [2023-12-02 18:04:21,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:21,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:04:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:04:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-02 18:04:21,719 INFO L87 Difference]: Start difference. First operand 255 states and 335 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:22,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:22,581 INFO L93 Difference]: Finished difference Result 479 states and 663 transitions. [2023-12-02 18:04:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:04:22,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 191 [2023-12-02 18:04:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:22,584 INFO L225 Difference]: With dead ends: 479 [2023-12-02 18:04:22,584 INFO L226 Difference]: Without dead ends: 257 [2023-12-02 18:04:22,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-02 18:04:22,586 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 12 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:22,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1684 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 18:04:22,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-02 18:04:22,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-12-02 18:04:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.119718309859155) internal successors, (159), 145 states have internal predecessors, (159), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 334 transitions. [2023-12-02 18:04:22,601 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 334 transitions. Word has length 191 [2023-12-02 18:04:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:22,601 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 334 transitions. [2023-12-02 18:04:22,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 334 transitions. [2023-12-02 18:04:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-02 18:04:22,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:22,604 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:22,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 18:04:22,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:22,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:22,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:22,813 INFO L85 PathProgramCache]: Analyzing trace with hash -973684679, now seen corresponding path program 1 times [2023-12-02 18:04:22,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:22,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411848490] [2023-12-02 18:04:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:22,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-02 18:04:23,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411848490] [2023-12-02 18:04:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411848490] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897508651] [2023-12-02 18:04:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:23,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:23,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:23,551 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:23,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 18:04:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:24,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 3090 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:04:24,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-02 18:04:24,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:04:24,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897508651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:04:24,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:24,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-02 18:04:24,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466895793] [2023-12-02 18:04:24,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:04:24,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:04:24,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:24,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:04:24,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-02 18:04:24,261 INFO L87 Difference]: Start difference. First operand 255 states and 334 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:24,840 INFO L93 Difference]: Finished difference Result 479 states and 661 transitions. [2023-12-02 18:04:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:04:24,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 197 [2023-12-02 18:04:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:24,843 INFO L225 Difference]: With dead ends: 479 [2023-12-02 18:04:24,843 INFO L226 Difference]: Without dead ends: 257 [2023-12-02 18:04:24,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-02 18:04:24,845 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 12 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:24,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1400 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:04:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-02 18:04:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-12-02 18:04:24,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1126760563380282) internal successors, (158), 145 states have internal predecessors, (158), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 18:04:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 333 transitions. [2023-12-02 18:04:24,859 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 333 transitions. Word has length 197 [2023-12-02 18:04:24,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:24,859 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 333 transitions. [2023-12-02 18:04:24,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 18:04:24,859 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 333 transitions. [2023-12-02 18:04:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-02 18:04:24,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:24,861 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:24,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 18:04:25,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 18:04:25,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:25,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash 658210821, now seen corresponding path program 1 times [2023-12-02 18:04:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328310568] [2023-12-02 18:04:25,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:25,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-12-02 18:04:29,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:29,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328310568] [2023-12-02 18:04:29,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328310568] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:29,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380896837] [2023-12-02 18:04:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:29,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:29,703 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:29,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760f9b3c-077c-48cc-9b5a-5f6d1509cd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 18:04:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:30,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 3102 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-02 18:04:30,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:30,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:04:31,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2023-12-02 18:04:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 247 proven. 7 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-12-02 18:04:33,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:04:37,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2023-12-02 18:04:39,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 40 [2023-12-02 18:04:39,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 93 [2023-12-02 18:04:44,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:04:44,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 149 [2023-12-02 18:04:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-12-02 18:04:44,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380896837] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:04:44,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [245839328] [2023-12-02 18:04:45,008 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2023-12-02 18:04:45,008 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:04:45,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:04:45,017 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:04:45,018 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs