./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:12,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:12,636 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:32:12,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:12,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:12,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:12,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:12,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:12,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:12,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:12,691 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:12,693 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:12,693 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:12,695 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:32:12,695 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:12,696 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:12,696 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:32:12,697 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:32:12,697 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:12,698 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:32:12,700 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:32:12,701 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:32:12,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:12,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:32:12,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:12,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:12,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:32:12,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:12,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:32:12,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:32:12,707 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:12,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:12,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:12,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:12,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:12,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:12,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:12,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:32:12,710 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:32:12,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:32:12,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:12,711 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:32:12,711 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:12,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:12,712 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_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d [2023-11-23 21:32:13,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:13,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:13,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:13,052 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:13,055 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:13,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2023-11-23 21:32:16,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:16,801 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:16,802 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2023-11-23 21:32:16,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/data/b3ebbe2e9/8e878b4e8acb4732afe2aad4a0c2740b/FLAGec7d4b447 [2023-11-23 21:32:16,857 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/data/b3ebbe2e9/8e878b4e8acb4732afe2aad4a0c2740b [2023-11-23 21:32:16,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:16,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:16,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:16,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:16,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:16,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:16" (1/1) ... [2023-11-23 21:32:16,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ca4dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:16, skipping insertion in model container [2023-11-23 21:32:16,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:16" (1/1) ... [2023-11-23 21:32:17,003 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:17,274 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_923a1a8c-925f-487f-ae5b-b10b82ae34ea/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4503,4516] [2023-11-23 21:32:17,282 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_923a1a8c-925f-487f-ae5b-b10b82ae34ea/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4563,4576] [2023-11-23 21:32:18,315 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,322 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,323 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,324 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,326 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,353 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,358 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,364 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,367 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,371 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:18,829 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:32:18,831 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:32:18,832 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:32:18,834 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:32:18,835 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:32:18,836 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:32:18,837 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:32:18,838 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:32:18,839 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:32:18,846 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:32:19,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:19,093 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:32:19,112 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_923a1a8c-925f-487f-ae5b-b10b82ae34ea/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4503,4516] [2023-11-23 21:32:19,127 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_923a1a8c-925f-487f-ae5b-b10b82ae34ea/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4563,4576] [2023-11-23 21:32:19,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,218 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,219 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,221 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,223 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,234 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,242 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,243 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,244 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,245 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,246 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,247 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,247 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:32:19,324 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:32:19,325 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:32:19,326 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:32:19,327 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:32:19,338 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:32:19,339 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:32:19,339 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:32:19,340 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:32:19,341 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:32:19,342 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:32:19,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:19,640 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,640 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,641 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,641 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,641 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,641 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,641 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,641 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,642 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,642 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,642 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,642 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,642 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,643 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,643 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,643 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:19,651 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:32:19,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19 WrapperNode [2023-11-23 21:32:19,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:19,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:19,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:32:19,653 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:32:19,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,798 INFO L138 Inliner]: procedures = 678, calls = 1080, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 212 [2023-11-23 21:32:19,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:19,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:32:19,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:32:19,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:32:19,810 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:32:19,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:32:19,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:32:19,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:32:19,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (1/1) ... [2023-11-23 21:32:19,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:19,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:19,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:32:19,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:32:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2023-11-23 21:32:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2023-11-23 21:32:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:32:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:32:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:32:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-23 21:32:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-23 21:32:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_linked_list_is_allocated [2023-11-23 21:32:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_linked_list_is_allocated [2023-11-23 21:32:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:32:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-23 21:32:20,026 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-23 21:32:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:32:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:32:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:32:20,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:32:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2023-11-23 21:32:20,027 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2023-11-23 21:32:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:32:20,027 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:32:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:32:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:32:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:32:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:32:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:32:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:32:20,379 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:32:20,381 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:32:20,844 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:32:20,961 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:32:20,962 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:32:20,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:20 BoogieIcfgContainer [2023-11-23 21:32:20,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:32:20,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:32:20,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:32:20,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:32:20,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:32:16" (1/3) ... [2023-11-23 21:32:20,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f98119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:20, skipping insertion in model container [2023-11-23 21:32:20,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:19" (2/3) ... [2023-11-23 21:32:20,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f98119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:20, skipping insertion in model container [2023-11-23 21:32:20,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:20" (3/3) ... [2023-11-23 21:32:20,973 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_swap_contents_harness.i [2023-11-23 21:32:20,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:32:20,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:32:21,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:32:21,050 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;@50b7cbf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:32:21,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:32:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 48 states have internal predecessors, (57), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 21:32:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:32:21,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:21,067 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 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] [2023-11-23 21:32:21,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:32:21,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1917343217, now seen corresponding path program 1 times [2023-11-23 21:32:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:21,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466462296] [2023-11-23 21:32:21,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:21,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 21:32:22,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:22,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466462296] [2023-11-23 21:32:22,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466462296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:32:22,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814327001] [2023-11-23 21:32:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:22,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:32:22,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:22,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:32:22,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_923a1a8c-925f-487f-ae5b-b10b82ae34ea/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:32:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:22,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-23 21:32:22,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:22,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 21:32:23,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-11-23 21:32:23,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-23 21:32:23,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 27 [2023-11-23 21:32:23,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-23 21:32:23,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-23 21:32:26,481 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-23 21:32:26,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 16 [2023-11-23 21:32:26,504 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-11-23 21:32:26,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 13 [2023-11-23 21:32:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 21:32:26,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:32:26,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:32:26,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2023-11-23 21:32:26,992 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_305 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#b~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.base|) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.offset|) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.base|)) (forall ((v_arrayElimArr_2 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#b~0#1.base| v_arrayElimArr_2) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.base|) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.offset|) (+ |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.offset| 16)) (not (= (+ |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#b~0#1.offset| 16) (select v_arrayElimArr_2 |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#b~0#1.offset|)))))) is different from false [2023-11-23 21:32:26,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814327001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:32:26,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [822327783] [2023-11-23 21:32:27,022 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-11-23 21:32:27,022 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:32:27,026 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:32:27,032 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:32:27,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:32:29,920 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 106 for LOIs [2023-11-23 21:32:30,099 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_linked_list_is_allocated with input of size 292 for LOIs [2023-11-23 21:32:32,858 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2023-11-23 21:32:32,862 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 289 for LOIs [2023-11-23 21:32:33,033 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:32:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [822327783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:55,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:32:55,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 16] total 35 [2023-11-23 21:32:55,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350141301] [2023-11-23 21:32:55,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:55,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 21:32:55,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:56,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 21:32:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1290, Unknown=6, NotChecked=72, Total=1482 [2023-11-23 21:32:56,008 INFO L87 Difference]: Start difference. First operand has 89 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 48 states have internal predecessors, (57), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 6 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-23 21:32:58,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:33:00,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:33:02,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]