./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/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_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/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_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:12,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:12,767 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:22:12,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:12,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:12,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:12,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:12,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:12,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:12,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:12,825 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:12,825 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:12,826 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:12,826 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:12,827 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:12,828 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:12,828 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:12,829 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:12,829 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:12,830 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:12,831 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:12,831 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:12,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:12,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:12,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:12,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:12,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:12,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:12,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:12,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:12,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:12,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:12,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:12,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:12,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:12,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:12,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:12,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:12,840 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:12,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:12,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:12,841 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:12,842 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:12,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:12,842 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_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2023-11-23 21:22:13,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:13,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:13,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:13,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:13,129 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:13,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2023-11-23 21:22:16,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:16,999 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:17,000 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2023-11-23 21:22:17,045 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/data/44ea9c2de/98416128b3fe4874b4c9d231de3a9bf3/FLAGaa74e4b30 [2023-11-23 21:22:17,066 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/data/44ea9c2de/98416128b3fe4874b4c9d231de3a9bf3 [2023-11-23 21:22:17,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:17,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:17,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:17,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:17,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:17,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:17" (1/1) ... [2023-11-23 21:22:17,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32dd51f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:17, skipping insertion in model container [2023-11-23 21:22:17,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:17" (1/1) ... [2023-11-23 21:22:17,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:17,518 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_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2023-11-23 21:22:17,526 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_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2023-11-23 21:22:18,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:18,458 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:18,459 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:18,460 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:18,461 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:18,475 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:18,476 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:18,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:18,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:18,847 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:22:18,849 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:22:18,850 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:22:18,851 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:22:18,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:22:18,854 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:22:18,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:22:18,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:22:18,856 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:22:18,857 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:22:19,027 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,028 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:19,163 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:19,190 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_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2023-11-23 21:22:19,191 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_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2023-11-23 21:22:19,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,297 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,307 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,313 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,350 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:22:19,352 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:22:19,352 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:22:19,353 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:22:19,355 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:22:19,355 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:22:19,356 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:22:19,356 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:22:19,357 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:22:19,358 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:22:19,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:19,399 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2023-11-23 21:22:19,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:19,721 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,722 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,722 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,722 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,722 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,722 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,723 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,723 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,723 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,723 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,723 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,724 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,724 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,724 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,724 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:19,730 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:19,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19 WrapperNode [2023-11-23 21:22:19,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:19,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:19,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:19,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:19,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:19,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:19,969 INFO L138 Inliner]: procedures = 688, calls = 1518, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 740 [2023-11-23 21:22:19,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:19,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:19,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:19,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:19,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:19,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:19,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:19,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:20,027 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:20,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:20,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:20,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:20,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:20,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:20,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:20,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:20,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (1/1) ... [2023-11-23 21:22:20,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:20,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:20,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:20,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 21:22:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 21:22:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:22:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 21:22:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 21:22:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:22:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:22:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 21:22:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 21:22:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:22:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:22:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:22:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:22:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:22:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:22:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:22:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:22:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:22:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-23 21:22:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-23 21:22:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 21:22:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 21:22:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 21:22:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 21:22:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 21:22:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 21:22:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:22:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:22:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:22:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:22:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:22:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:22:20,209 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:22:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 21:22:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 21:22:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:22:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 21:22:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 21:22:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 21:22:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 21:22:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:22:20,577 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:20,581 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:21,989 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:22,394 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:22,394 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 21:22:22,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:22 BoogieIcfgContainer [2023-11-23 21:22:22,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:22,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:22,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:22,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:22,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:17" (1/3) ... [2023-11-23 21:22:22,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc8bbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:22, skipping insertion in model container [2023-11-23 21:22:22,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:19" (2/3) ... [2023-11-23 21:22:22,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc8bbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:22, skipping insertion in model container [2023-11-23 21:22:22,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:22" (3/3) ... [2023-11-23 21:22:22,416 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness-1.i [2023-11-23 21:22:22,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:22,444 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:22,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:22,554 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;@2a41311, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:22,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 90 states have internal predecessors, (110), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-23 21:22:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:22:22,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:22,598 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 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] [2023-11-23 21:22:22,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:22,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:22,615 INFO L85 PathProgramCache]: Analyzing trace with hash -198617788, now seen corresponding path program 1 times [2023-11-23 21:22:22,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:22,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778512311] [2023-11-23 21:22:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:23,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:22:23,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485483890] [2023-11-23 21:22:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:23,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:23,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:23,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:23,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:22:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:24,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:22:24,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 21:22:24,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:24,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:24,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778512311] [2023-11-23 21:22:24,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:22:24,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485483890] [2023-11-23 21:22:24,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485483890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:24,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:24,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998020819] [2023-11-23 21:22:24,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:24,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:22:24,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:24,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:22:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:24,191 INFO L87 Difference]: Start difference. First operand has 162 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 90 states have internal predecessors, (110), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:22:24,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:24,519 INFO L93 Difference]: Finished difference Result 305 states and 427 transitions. [2023-11-23 21:22:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:22:24,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 82 [2023-11-23 21:22:24,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:24,541 INFO L225 Difference]: With dead ends: 305 [2023-11-23 21:22:24,542 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 21:22:24,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:24,561 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:24,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:22:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 21:22:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-23 21:22:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 85 states have (on average 1.2) internal successors, (102), 87 states have internal predecessors, (102), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-23 21:22:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 212 transitions. [2023-11-23 21:22:24,669 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 212 transitions. Word has length 82 [2023-11-23 21:22:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:24,671 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 212 transitions. [2023-11-23 21:22:24,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:22:24,672 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 212 transitions. [2023-11-23 21:22:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 21:22:24,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:24,679 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 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] [2023-11-23 21:22:24,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:24,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:24,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:24,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1292296639, now seen corresponding path program 1 times [2023-11-23 21:22:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:24,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464308504] [2023-11-23 21:22:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:25,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:22:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165692077] [2023-11-23 21:22:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:25,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:25,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:25,150 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:25,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:22:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:25,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 2352 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:22:25,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 21:22:26,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:26,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:26,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464308504] [2023-11-23 21:22:26,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:22:26,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165692077] [2023-11-23 21:22:26,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165692077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:26,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:26,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:22:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042980790] [2023-11-23 21:22:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:26,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:22:26,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:22:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:22:26,031 INFO L87 Difference]: Start difference. First operand 158 states and 212 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 21:22:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:26,854 INFO L93 Difference]: Finished difference Result 300 states and 397 transitions. [2023-11-23 21:22:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:22:26,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 108 [2023-11-23 21:22:26,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:26,859 INFO L225 Difference]: With dead ends: 300 [2023-11-23 21:22:26,860 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 21:22:26,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:22:26,863 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 8 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:26,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 908 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:22:26,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 21:22:26,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-23 21:22:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 85 states have (on average 1.188235294117647) internal successors, (101), 87 states have internal predecessors, (101), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-23 21:22:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2023-11-23 21:22:26,888 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 108 [2023-11-23 21:22:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:26,889 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2023-11-23 21:22:26,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 21:22:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2023-11-23 21:22:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 21:22:26,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:26,894 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:26,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:27,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:27,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:27,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1278027779, now seen corresponding path program 1 times [2023-11-23 21:22:27,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:27,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779372503] [2023-11-23 21:22:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:27,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:22:27,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847139164] [2023-11-23 21:22:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:27,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:27,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:27,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:27,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:22:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:27,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 2366 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:22:27,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 21:22:27,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:27,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:27,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779372503] [2023-11-23 21:22:27,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:22:27,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847139164] [2023-11-23 21:22:27,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847139164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:27,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:27,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:27,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331418696] [2023-11-23 21:22:27,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:27,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:27,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:27,970 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-23 21:22:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:28,273 INFO L93 Difference]: Finished difference Result 297 states and 395 transitions. [2023-11-23 21:22:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:28,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 110 [2023-11-23 21:22:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:28,277 INFO L225 Difference]: With dead ends: 297 [2023-11-23 21:22:28,277 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 21:22:28,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:28,278 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:28,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 374 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:22:28,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 21:22:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 21:22:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 86 states have (on average 1.186046511627907) internal successors, (102), 88 states have internal predecessors, (102), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-23 21:22:28,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 212 transitions. [2023-11-23 21:22:28,299 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 212 transitions. Word has length 110 [2023-11-23 21:22:28,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:28,299 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 212 transitions. [2023-11-23 21:22:28,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-23 21:22:28,300 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 212 transitions. [2023-11-23 21:22:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 21:22:28,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:28,302 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:28,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:28,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:28,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:28,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1462651319, now seen corresponding path program 1 times [2023-11-23 21:22:28,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:28,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800743580] [2023-11-23 21:22:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:28,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:28,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:22:28,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449253190] [2023-11-23 21:22:28,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:28,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:28,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:28,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:28,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9ab643-aaa0-4c3f-80d1-e648fc775ae4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:22:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:29,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 2404 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 21:22:29,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 88 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:22:29,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 21:22:29,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:29,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800743580] [2023-11-23 21:22:29,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:22:29,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449253190] [2023-11-23 21:22:29,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449253190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:29,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1146546617] [2023-11-23 21:22:29,972 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-11-23 21:22:29,972 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:22:29,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:22:29,983 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:22:29,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs