./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5 --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 2293598a72fb26bd355ae2995b6b28cabefb2a1c0a42bb14a43bd85f81ccf59f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:00:54,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:00:54,884 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:00:54,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:00:54,890 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:00:54,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:00:54,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:00:54,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:00:54,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:00:54,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:00:54,918 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:00:54,919 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:00:54,919 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:00:54,920 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:00:54,920 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:00:54,921 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:00:54,921 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:00:54,922 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:00:54,922 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:00:54,923 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:00:54,924 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:00:54,924 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:00:54,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:00:54,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:00:54,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:00:54,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:00:54,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:00:54,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:00:54,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:00:54,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:00:54,929 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:00:54,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:00:54,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:00:54,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:00:54,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:00:54,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:00:54,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:00:54,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:00:54,933 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:00:54,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:00:54,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:00:54,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:00:54,935 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:00:54,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:00:54,935 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_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2293598a72fb26bd355ae2995b6b28cabefb2a1c0a42bb14a43bd85f81ccf59f [2023-11-21 19:00:55,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:00:55,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:00:55,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:00:55,337 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:00:55,338 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:00:55,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i [2023-11-21 19:00:58,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:00:59,047 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:00:59,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i [2023-11-21 19:00:59,105 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/data/e25ee166e/764840494e2e48ff93cf1c0655f815c9/FLAGebe1c2f27 [2023-11-21 19:00:59,123 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/data/e25ee166e/764840494e2e48ff93cf1c0655f815c9 [2023-11-21 19:00:59,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:00:59,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:00:59,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:00:59,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:00:59,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:00:59,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:00:59" (1/1) ... [2023-11-21 19:00:59,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a73b6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:00:59, skipping insertion in model container [2023-11-21 19:00:59,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:00:59" (1/1) ... [2023-11-21 19:00:59,292 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:00:59,643 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_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4497,4510] [2023-11-21 19:00:59,651 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_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4557,4570] [2023-11-21 19:01:00,856 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:00,857 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:00,858 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:00,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:00,860 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:00,878 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:00,879 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:00,882 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:00,883 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:01,390 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:01:01,392 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:01:01,393 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:01:01,394 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:01:01,396 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:01:01,397 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:01:01,397 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:01:01,398 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:01:01,399 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:01:01,400 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:01:01,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:01,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:01,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:01:01,929 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:01:01,954 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_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4497,4510] [2023-11-21 19:01:01,955 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_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4557,4570] [2023-11-21 19:01:02,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,084 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,097 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,098 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,112 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,112 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,114 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,114 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,171 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:01:02,172 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:01:02,173 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:01:02,174 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:01:02,177 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:01:02,178 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:01:02,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:01:02,180 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:01:02,181 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:01:02,184 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:01:02,311 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-21 19:01:02,313 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,314 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:01:02,367 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8957-8968] [2023-11-21 19:01:02,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:01:02,752 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,752 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,753 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,753 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,754 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,754 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,754 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,754 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,754 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,755 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,756 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,756 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,756 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,757 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,757 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,757 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,757 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,757 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:02,765 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:01:02,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02 WrapperNode [2023-11-21 19:01:02,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:01:02,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:01:02,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:01:02,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:01:02,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:02,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,103 INFO L138 Inliner]: procedures = 694, calls = 2939, calls flagged for inlining = 62, calls inlined = 12, statements flattened = 1179 [2023-11-21 19:01:03,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:01:03,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:01:03,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:01:03,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:01:03,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:01:03,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:01:03,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:01:03,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:01:03,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (1/1) ... [2023-11-21 19:01:03,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:01:03,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:03,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:01:03,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:01:03,381 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-21 19:01:03,381 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-21 19:01:03,381 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2023-11-21 19:01:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2023-11-21 19:01:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:01:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 19:01:03,382 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 19:01:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2023-11-21 19:01:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2023-11-21 19:01:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:01:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 19:01:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 19:01:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 19:01:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 19:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2023-11-21 19:01:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2023-11-21 19:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:01:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 19:01:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 19:01:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2023-11-21 19:01:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2023-11-21 19:01:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:01:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:01:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2023-11-21 19:01:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2023-11-21 19:01:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:01:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:01:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:01:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2023-11-21 19:01:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2023-11-21 19:01:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2023-11-21 19:01:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2023-11-21 19:01:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 19:01:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 19:01:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2023-11-21 19:01:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2023-11-21 19:01:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2023-11-21 19:01:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2023-11-21 19:01:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 19:01:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 19:01:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:01:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2023-11-21 19:01:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2023-11-21 19:01:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2023-11-21 19:01:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2023-11-21 19:01:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2023-11-21 19:01:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2023-11-21 19:01:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2023-11-21 19:01:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2023-11-21 19:01:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:01:03,795 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:01:03,799 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:01:05,650 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:01:06,085 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:01:06,086 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:01:06,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:01:06 BoogieIcfgContainer [2023-11-21 19:01:06,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:01:06,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:01:06,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:01:06,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:01:06,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:00:59" (1/3) ... [2023-11-21 19:01:06,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d6938a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:01:06, skipping insertion in model container [2023-11-21 19:01:06,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:02" (2/3) ... [2023-11-21 19:01:06,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d6938a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:01:06, skipping insertion in model container [2023-11-21 19:01:06,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:01:06" (3/3) ... [2023-11-21 19:01:06,097 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_harness_negated.i [2023-11-21 19:01:06,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:01:06,117 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 19:01:06,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:01:06,205 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;@40987b9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:01:06,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 19:01:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 329 states, 164 states have (on average 1.1768292682926829) internal successors, (193), 167 states have internal predecessors, (193), 142 states have call successors, (142), 20 states have call predecessors, (142), 20 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2023-11-21 19:01:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 19:01:06,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:06,222 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:06,222 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:06,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:06,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1460936184, now seen corresponding path program 1 times [2023-11-21 19:01:06,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:06,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777387437] [2023-11-21 19:01:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:06,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 19:01:07,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:07,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777387437] [2023-11-21 19:01:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777387437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:07,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:01:07,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 19:01:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762060880] [2023-11-21 19:01:07,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:07,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:01:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:07,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:01:07,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:01:07,739 INFO L87 Difference]: Start difference. First operand has 329 states, 164 states have (on average 1.1768292682926829) internal successors, (193), 167 states have internal predecessors, (193), 142 states have call successors, (142), 20 states have call predecessors, (142), 20 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 19:01:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:09,142 INFO L93 Difference]: Finished difference Result 654 states and 1049 transitions. [2023-11-21 19:01:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:09,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 41 [2023-11-21 19:01:09,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:09,166 INFO L225 Difference]: With dead ends: 654 [2023-11-21 19:01:09,172 INFO L226 Difference]: Without dead ends: 338 [2023-11-21 19:01:09,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-21 19:01:09,196 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 26 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:09,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2609 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 19:01:09,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-21 19:01:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-11-21 19:01:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 171 states have (on average 1.1637426900584795) internal successors, (199), 174 states have internal predecessors, (199), 143 states have call successors, (143), 22 states have call predecessors, (143), 22 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2023-11-21 19:01:09,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 484 transitions. [2023-11-21 19:01:09,295 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 484 transitions. Word has length 41 [2023-11-21 19:01:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:09,296 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 484 transitions. [2023-11-21 19:01:09,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 19:01:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 484 transitions. [2023-11-21 19:01:09,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-21 19:01:09,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:09,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:09,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:01:09,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:09,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:09,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2094839270, now seen corresponding path program 1 times [2023-11-21 19:01:09,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:09,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790096451] [2023-11-21 19:01:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:09,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 19:01:10,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790096451] [2023-11-21 19:01:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790096451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620732710] [2023-11-21 19:01:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:10,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:10,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:10,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:01:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:11,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 19:01:11,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 19:01:11,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:11,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620732710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:11,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:01:11,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-21 19:01:11,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125162203] [2023-11-21 19:01:11,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:11,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:01:11,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:11,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:01:11,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:01:11,172 INFO L87 Difference]: Start difference. First operand 338 states and 484 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-21 19:01:12,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:12,838 INFO L93 Difference]: Finished difference Result 353 states and 502 transitions. [2023-11-21 19:01:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:12,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 71 [2023-11-21 19:01:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:12,845 INFO L225 Difference]: With dead ends: 353 [2023-11-21 19:01:12,845 INFO L226 Difference]: Without dead ends: 350 [2023-11-21 19:01:12,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:01:12,847 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 24 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:12,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2639 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 19:01:12,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-21 19:01:12,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2023-11-21 19:01:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 180 states have (on average 1.1777777777777778) internal successors, (212), 183 states have internal predecessors, (212), 144 states have call successors, (144), 24 states have call predecessors, (144), 24 states have return successors, (143), 143 states have call predecessors, (143), 143 states have call successors, (143) [2023-11-21 19:01:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 499 transitions. [2023-11-21 19:01:12,902 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 499 transitions. Word has length 71 [2023-11-21 19:01:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:12,903 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 499 transitions. [2023-11-21 19:01:12,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-21 19:01:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 499 transitions. [2023-11-21 19:01:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-21 19:01:12,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:12,919 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:12,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:01:13,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:13,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:13,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1436563073, now seen corresponding path program 1 times [2023-11-21 19:01:13,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:13,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271219171] [2023-11-21 19:01:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:13,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-21 19:01:14,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:14,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271219171] [2023-11-21 19:01:14,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271219171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:14,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101232039] [2023-11-21 19:01:14,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:14,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:14,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:14,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:14,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:01:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:15,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 3123 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 19:01:15,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-11-21 19:01:15,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:15,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101232039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:15,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:01:15,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-21 19:01:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170333782] [2023-11-21 19:01:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:15,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:01:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:01:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:01:15,309 INFO L87 Difference]: Start difference. First operand 350 states and 499 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-21 19:01:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:16,815 INFO L93 Difference]: Finished difference Result 642 states and 920 transitions. [2023-11-21 19:01:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:16,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2023-11-21 19:01:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:16,821 INFO L225 Difference]: With dead ends: 642 [2023-11-21 19:01:16,822 INFO L226 Difference]: Without dead ends: 359 [2023-11-21 19:01:16,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:01:16,825 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 15 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:16,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2643 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 19:01:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-21 19:01:16,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-11-21 19:01:16,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 186 states have (on average 1.1774193548387097) internal successors, (219), 189 states have internal predecessors, (219), 145 states have call successors, (145), 26 states have call predecessors, (145), 26 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-11-21 19:01:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 508 transitions. [2023-11-21 19:01:16,859 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 508 transitions. Word has length 183 [2023-11-21 19:01:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:16,861 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 508 transitions. [2023-11-21 19:01:16,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-21 19:01:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 508 transitions. [2023-11-21 19:01:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-21 19:01:16,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:16,865 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:16,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:01:17,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:17,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:17,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:17,093 INFO L85 PathProgramCache]: Analyzing trace with hash 516142323, now seen corresponding path program 1 times [2023-11-21 19:01:17,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:17,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473785681] [2023-11-21 19:01:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:17,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-21 19:01:18,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:18,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473785681] [2023-11-21 19:01:18,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473785681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:18,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736463104] [2023-11-21 19:01:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:18,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:18,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:18,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:18,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:01:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:18,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 3164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 19:01:18,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-21 19:01:19,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:19,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736463104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:19,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:01:19,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-11-21 19:01:19,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848137402] [2023-11-21 19:01:19,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:19,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:01:19,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:19,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:01:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:01:19,055 INFO L87 Difference]: Start difference. First operand 359 states and 508 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-21 19:01:20,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:20,177 INFO L93 Difference]: Finished difference Result 719 states and 1021 transitions. [2023-11-21 19:01:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:20,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 189 [2023-11-21 19:01:20,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:20,183 INFO L225 Difference]: With dead ends: 719 [2023-11-21 19:01:20,184 INFO L226 Difference]: Without dead ends: 371 [2023-11-21 19:01:20,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:01:20,187 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 6 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:20,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2149 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 19:01:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-21 19:01:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2023-11-21 19:01:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 191 states have (on average 1.1675392670157068) internal successors, (223), 194 states have internal predecessors, (223), 146 states have call successors, (146), 28 states have call predecessors, (146), 28 states have return successors, (146), 145 states have call predecessors, (146), 145 states have call successors, (146) [2023-11-21 19:01:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 515 transitions. [2023-11-21 19:01:20,217 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 515 transitions. Word has length 189 [2023-11-21 19:01:20,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:20,218 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 515 transitions. [2023-11-21 19:01:20,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-21 19:01:20,218 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 515 transitions. [2023-11-21 19:01:20,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-21 19:01:20,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:20,222 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:20,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:01:20,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:20,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:20,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash 574894607, now seen corresponding path program 1 times [2023-11-21 19:01:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:20,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715660290] [2023-11-21 19:01:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:20,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-21 19:01:21,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715660290] [2023-11-21 19:01:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715660290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919571183] [2023-11-21 19:01:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:21,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:21,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:21,397 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:21,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:01:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:22,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 3168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 19:01:22,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-21 19:01:22,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:22,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919571183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:22,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:01:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-21 19:01:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172001755] [2023-11-21 19:01:22,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:22,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:01:22,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:01:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-21 19:01:22,459 INFO L87 Difference]: Start difference. First operand 367 states and 515 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, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-21 19:01:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:24,153 INFO L93 Difference]: Finished difference Result 729 states and 1022 transitions. [2023-11-21 19:01:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:24,154 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, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 191 [2023-11-21 19:01:24,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:24,158 INFO L225 Difference]: With dead ends: 729 [2023-11-21 19:01:24,159 INFO L226 Difference]: Without dead ends: 371 [2023-11-21 19:01:24,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-21 19:01:24,162 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 17 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:24,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2554 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-21 19:01:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-21 19:01:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 369. [2023-11-21 19:01:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 192 states have (on average 1.1614583333333333) internal successors, (223), 196 states have internal predecessors, (223), 146 states have call successors, (146), 28 states have call predecessors, (146), 29 states have return successors, (147), 145 states have call predecessors, (147), 145 states have call successors, (147) [2023-11-21 19:01:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 516 transitions. [2023-11-21 19:01:24,210 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 516 transitions. Word has length 191 [2023-11-21 19:01:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:24,211 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 516 transitions. [2023-11-21 19:01:24,211 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, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-21 19:01:24,211 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 516 transitions. [2023-11-21 19:01:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-21 19:01:24,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:24,215 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:24,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:01:24,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:24,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:24,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1393144069, now seen corresponding path program 1 times [2023-11-21 19:01:24,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:24,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008339519] [2023-11-21 19:01:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:24,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-21 19:01:25,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008339519] [2023-11-21 19:01:25,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008339519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10989339] [2023-11-21 19:01:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:25,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:25,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:25,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:25,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 19:01:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:26,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 19:01:26,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-21 19:01:26,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10989339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:26,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:01:26,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-21 19:01:26,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164161986] [2023-11-21 19:01:26,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:26,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:01:26,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:01:26,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-21 19:01:26,407 INFO L87 Difference]: Start difference. First operand 369 states and 516 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, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-21 19:01:28,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:28,351 INFO L93 Difference]: Finished difference Result 731 states and 1022 transitions. [2023-11-21 19:01:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:28,352 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, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 193 [2023-11-21 19:01:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:28,355 INFO L225 Difference]: With dead ends: 731 [2023-11-21 19:01:28,356 INFO L226 Difference]: Without dead ends: 373 [2023-11-21 19:01:28,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-21 19:01:28,359 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 16 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:28,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2550 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-21 19:01:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-21 19:01:28,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 369. [2023-11-21 19:01:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 192 states have (on average 1.15625) internal successors, (222), 196 states have internal predecessors, (222), 146 states have call successors, (146), 28 states have call predecessors, (146), 29 states have return successors, (147), 145 states have call predecessors, (147), 145 states have call successors, (147) [2023-11-21 19:01:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 515 transitions. [2023-11-21 19:01:28,385 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 515 transitions. Word has length 193 [2023-11-21 19:01:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:28,386 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 515 transitions. [2023-11-21 19:01:28,386 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, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-21 19:01:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 515 transitions. [2023-11-21 19:01:28,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-21 19:01:28,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:28,389 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:28,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 19:01:28,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 19:01:28,605 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:28,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:28,606 INFO L85 PathProgramCache]: Analyzing trace with hash 629756303, now seen corresponding path program 1 times [2023-11-21 19:01:28,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:28,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401564219] [2023-11-21 19:01:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:28,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-21 19:01:29,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401564219] [2023-11-21 19:01:29,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401564219] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202011151] [2023-11-21 19:01:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:29,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:29,450 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:29,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 19:01:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:30,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 19:01:30,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-21 19:01:30,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:30,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202011151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:30,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:01:30,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-21 19:01:30,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402979765] [2023-11-21 19:01:30,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:30,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:01:30,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:30,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:01:30,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-21 19:01:30,426 INFO L87 Difference]: Start difference. First operand 369 states and 515 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, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-21 19:01:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:31,697 INFO L93 Difference]: Finished difference Result 731 states and 1020 transitions. [2023-11-21 19:01:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:31,698 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, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 195 [2023-11-21 19:01:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:31,701 INFO L225 Difference]: With dead ends: 731 [2023-11-21 19:01:31,702 INFO L226 Difference]: Without dead ends: 373 [2023-11-21 19:01:31,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-21 19:01:31,705 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 15 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:31,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2546 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 19:01:31,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-21 19:01:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 369. [2023-11-21 19:01:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 192 states have (on average 1.1510416666666667) internal successors, (221), 196 states have internal predecessors, (221), 146 states have call successors, (146), 28 states have call predecessors, (146), 29 states have return successors, (147), 145 states have call predecessors, (147), 145 states have call successors, (147) [2023-11-21 19:01:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 514 transitions. [2023-11-21 19:01:31,731 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 514 transitions. Word has length 195 [2023-11-21 19:01:31,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:31,731 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 514 transitions. [2023-11-21 19:01:31,732 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, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-21 19:01:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 514 transitions. [2023-11-21 19:01:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-21 19:01:31,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:31,735 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:31,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 19:01:31,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:31,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:31,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:31,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1104021251, now seen corresponding path program 1 times [2023-11-21 19:01:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:31,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769196185] [2023-11-21 19:01:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:31,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-11-21 19:01:33,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:33,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769196185] [2023-11-21 19:01:33,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769196185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:33,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824986548] [2023-11-21 19:01:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:33,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:33,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 19:01:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:34,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 19:01:34,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-21 19:01:34,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:34,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824986548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:34,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:01:34,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2023-11-21 19:01:34,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325725686] [2023-11-21 19:01:34,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:34,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:01:34,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:34,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:01:34,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:01:34,087 INFO L87 Difference]: Start difference. First operand 369 states and 514 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-21 19:01:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:35,204 INFO L93 Difference]: Finished difference Result 713 states and 1035 transitions. [2023-11-21 19:01:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:35,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 197 [2023-11-21 19:01:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:35,209 INFO L225 Difference]: With dead ends: 713 [2023-11-21 19:01:35,209 INFO L226 Difference]: Without dead ends: 369 [2023-11-21 19:01:35,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-21 19:01:35,212 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 6 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:35,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2178 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 19:01:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-21 19:01:35,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2023-11-21 19:01:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 191 states have (on average 1.1361256544502618) internal successors, (217), 194 states have internal predecessors, (217), 146 states have call successors, (146), 28 states have call predecessors, (146), 28 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-21 19:01:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 508 transitions. [2023-11-21 19:01:35,236 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 508 transitions. Word has length 197 [2023-11-21 19:01:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:35,238 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 508 transitions. [2023-11-21 19:01:35,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-21 19:01:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 508 transitions. [2023-11-21 19:01:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-21 19:01:35,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:35,243 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:35,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 19:01:35,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:35,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:35,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1021465857, now seen corresponding path program 1 times [2023-11-21 19:01:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:35,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681969168] [2023-11-21 19:01:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:35,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 4 proven. 71 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-21 19:01:36,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:36,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681969168] [2023-11-21 19:01:36,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681969168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:36,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087077754] [2023-11-21 19:01:36,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:36,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:36,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:36,734 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:36,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 19:01:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:37,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 19:01:37,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-21 19:01:37,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:37,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087077754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:37,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:01:37,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-21 19:01:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027958436] [2023-11-21 19:01:37,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:37,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:01:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:01:37,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-21 19:01:37,781 INFO L87 Difference]: Start difference. First operand 367 states and 508 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-21 19:01:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:39,273 INFO L93 Difference]: Finished difference Result 703 states and 1015 transitions. [2023-11-21 19:01:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:39,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 202 [2023-11-21 19:01:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:39,277 INFO L225 Difference]: With dead ends: 703 [2023-11-21 19:01:39,277 INFO L226 Difference]: Without dead ends: 367 [2023-11-21 19:01:39,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-21 19:01:39,282 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 16 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:39,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2581 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 19:01:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-21 19:01:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2023-11-21 19:01:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 191 states have (on average 1.130890052356021) internal successors, (216), 194 states have internal predecessors, (216), 146 states have call successors, (146), 28 states have call predecessors, (146), 28 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-21 19:01:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 507 transitions. [2023-11-21 19:01:39,331 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 507 transitions. Word has length 202 [2023-11-21 19:01:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:39,333 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 507 transitions. [2023-11-21 19:01:39,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-21 19:01:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 507 transitions. [2023-11-21 19:01:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-21 19:01:39,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:39,336 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-21 19:01:39,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 19:01:39,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:39,549 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:39,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:39,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1056685247, now seen corresponding path program 1 times [2023-11-21 19:01:39,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:39,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819772631] [2023-11-21 19:01:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:39,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 5 proven. 77 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-21 19:01:40,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:40,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819772631] [2023-11-21 19:01:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819772631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:40,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166270345] [2023-11-21 19:01:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:40,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:40,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:40,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:40,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 19:01:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:41,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 3198 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 19:01:41,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-21 19:01:41,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:41,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166270345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:41,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:01:41,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-21 19:01:41,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112652929] [2023-11-21 19:01:41,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:41,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:01:41,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:01:41,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:01:41,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-21 19:01:41,746 INFO L87 Difference]: Start difference. First operand 367 states and 507 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-21 19:01:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:42,806 INFO L93 Difference]: Finished difference Result 705 states and 1015 transitions. [2023-11-21 19:01:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:01:42,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 206 [2023-11-21 19:01:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:42,810 INFO L225 Difference]: With dead ends: 705 [2023-11-21 19:01:42,811 INFO L226 Difference]: Without dead ends: 369 [2023-11-21 19:01:42,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-21 19:01:42,813 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 17 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:42,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2147 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 19:01:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-21 19:01:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2023-11-21 19:01:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 191 states have (on average 1.12565445026178) internal successors, (215), 194 states have internal predecessors, (215), 146 states have call successors, (146), 28 states have call predecessors, (146), 28 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-21 19:01:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 506 transitions. [2023-11-21 19:01:42,836 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 506 transitions. Word has length 206 [2023-11-21 19:01:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:42,837 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 506 transitions. [2023-11-21 19:01:42,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-21 19:01:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 506 transitions. [2023-11-21 19:01:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-21 19:01:42,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:42,840 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-21 19:01:42,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 19:01:43,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 19:01:43,066 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:01:43,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash -271860225, now seen corresponding path program 1 times [2023-11-21 19:01:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:01:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913678657] [2023-11-21 19:01:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:01:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 6 proven. 83 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-21 19:01:44,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:01:44,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913678657] [2023-11-21 19:01:44,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913678657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:01:44,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871849868] [2023-11-21 19:01:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:44,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:01:44,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:44,195 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:01:44,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67171ad9-c91d-4d6e-aeba-06d3ecc49b5e/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process