./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX --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 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:54:47,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:54:47,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:54:47,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:54:47,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:54:47,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:54:47,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:54:47,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:54:47,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:54:47,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:54:47,763 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:54:47,763 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:54:47,764 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:54:47,764 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:54:47,765 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:54:47,766 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:54:47,766 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:54:47,767 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:54:47,768 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:54:47,768 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:54:47,769 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:54:47,770 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:54:47,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:54:47,772 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:54:47,772 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:54:47,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:54:47,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:54:47,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:54:47,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:54:47,775 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:54:47,776 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:54:47,776 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:54:47,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:54:47,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:47,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:54:47,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:54:47,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:54:47,779 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:54:47,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:54:47,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:54:47,780 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:54:47,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:54:47,781 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_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 [2023-11-12 00:54:48,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:54:48,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:54:48,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:54:48,168 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:54:48,170 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:54:48,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2023-11-12 00:54:51,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:54:51,925 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:54:51,926 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2023-11-12 00:54:51,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/data/860e72017/e6a050a4532e4aabbf28cfae4fa86bb0/FLAG01f16c2be [2023-11-12 00:54:51,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/data/860e72017/e6a050a4532e4aabbf28cfae4fa86bb0 [2023-11-12 00:54:51,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:54:51,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:54:52,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:52,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:54:52,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:54:52,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:51" (1/1) ... [2023-11-12 00:54:52,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ba03f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:52, skipping insertion in model container [2023-11-12 00:54:52,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:51" (1/1) ... [2023-11-12 00:54:52,140 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:54:52,535 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_27c2eb0b-acbd-41d2-bcd0-a15a95060691/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2023-11-12 00:54:52,546 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_27c2eb0b-acbd-41d2-bcd0-a15a95060691/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2023-11-12 00:54:53,747 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,748 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,749 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,750 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,751 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,773 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,774 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,777 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,778 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,781 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,782 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,783 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:53,784 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,341 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:54:54,343 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:54:54,344 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:54:54,345 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:54:54,347 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:54:54,348 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:54:54,349 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:54:54,349 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:54:54,350 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:54:54,351 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:54:54,695 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,711 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,838 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,839 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,839 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,840 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,840 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,841 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,842 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,842 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,843 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,843 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,844 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,844 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,845 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,848 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,849 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,850 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,850 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,854 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,855 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,864 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,865 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,865 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:54,918 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:54:54,934 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_27c2eb0b-acbd-41d2-bcd0-a15a95060691/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2023-11-12 00:54:54,934 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_27c2eb0b-acbd-41d2-bcd0-a15a95060691/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2023-11-12 00:54:54,974 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,975 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,975 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,976 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,977 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,984 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,984 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,986 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,986 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,987 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,988 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,989 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:54,989 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,027 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:54:55,028 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:54:55,039 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:54:55,040 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:54:55,041 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:54:55,042 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:54:55,042 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:54:55,043 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:54:55,044 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:54:55,044 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:54:55,084 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,089 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-12 00:54:55,164 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,166 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,166 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,167 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,167 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,168 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,169 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,169 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,170 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,171 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,171 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,172 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,172 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,173 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,174 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,174 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,175 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,177 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,178 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,187 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,188 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,188 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:55,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:55,423 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,424 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,424 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,425 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,425 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,425 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,430 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,430 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,431 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,431 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,431 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,432 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,432 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,432 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,432 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:55,443 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:54:55,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55 WrapperNode [2023-11-12 00:54:55,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:55,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:55,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:54:55,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:54:55,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,768 INFO L138 Inliner]: procedures = 696, calls = 1881, calls flagged for inlining = 58, calls inlined = 17, statements flattened = 1147 [2023-11-12 00:54:55,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:55,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:54:55,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:54:55,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:54:55,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:55,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:54:55,998 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:54:55,998 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:54:55,998 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:54:55,999 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (1/1) ... [2023-11-12 00:54:56,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:56,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:56,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:54:56,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:54:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-12 00:54:56,094 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-12 00:54:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2023-11-12 00:54:56,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2023-11-12 00:54:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-12 00:54:56,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-12 00:54:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:54:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-12 00:54:56,096 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-12 00:54:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-12 00:54:56,096 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-12 00:54:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:54:56,097 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:54:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-12 00:54:56,098 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-12 00:54:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-12 00:54:56,098 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-12 00:54:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:54:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:54:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:54:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:54:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:54:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:54:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:54:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:54:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-12 00:54:56,100 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-12 00:54:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-12 00:54:56,101 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-12 00:54:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:54:56,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:54:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:54:56,102 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:54:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:54:56,102 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:54:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-12 00:54:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-12 00:54:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-12 00:54:56,107 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-12 00:54:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-12 00:54:56,108 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-12 00:54:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-12 00:54:56,108 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-12 00:54:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:54:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:54:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:54:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:54:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-12 00:54:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-12 00:54:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-12 00:54:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-12 00:54:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-12 00:54:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-12 00:54:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:54:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-12 00:54:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-12 00:54:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:54:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:54:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_push_ref [2023-11-12 00:54:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_push_ref [2023-11-12 00:54:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-12 00:54:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-12 00:54:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:54:56,120 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:54:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:54:56,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:54:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-12 00:54:56,121 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-12 00:54:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:54:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:54:56,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:54:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-12 00:54:56,121 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-12 00:54:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 00:54:56,122 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 00:54:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:54:56,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:54:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:54:56,641 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:54:56,645 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:54:58,916 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:54:59,299 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:54:59,299 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 00:54:59,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:59 BoogieIcfgContainer [2023-11-12 00:54:59,304 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:54:59,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:54:59,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:54:59,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:54:59,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:54:51" (1/3) ... [2023-11-12 00:54:59,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7435a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:59, skipping insertion in model container [2023-11-12 00:54:59,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:55" (2/3) ... [2023-11-12 00:54:59,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7435a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:59, skipping insertion in model container [2023-11-12 00:54:59,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:59" (3/3) ... [2023-11-12 00:54:59,314 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2023-11-12 00:54:59,337 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:54:59,337 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:54:59,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:54:59,437 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;@7cee9be7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:54:59,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:54:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 461 states, 233 states have (on average 1.201716738197425) internal successors, (280), 236 states have internal predecessors, (280), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) [2023-11-12 00:54:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-12 00:54:59,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:59,463 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:54:59,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:54:59,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:59,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1237240839, now seen corresponding path program 1 times [2023-11-12 00:54:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:59,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929898276] [2023-11-12 00:54:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-12 00:55:00,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:00,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929898276] [2023-11-12 00:55:00,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929898276] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:55:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230077272] [2023-11-12 00:55:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:00,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:00,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:00,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:00,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:55:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:01,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:55:01,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-12 00:55:01,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230077272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:01,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:55:01,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-12 00:55:01,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39121957] [2023-11-12 00:55:01,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:01,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:55:01,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:01,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:55:01,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:55:01,877 INFO L87 Difference]: Start difference. First operand has 461 states, 233 states have (on average 1.201716738197425) internal successors, (280), 236 states have internal predecessors, (280), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-12 00:55:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:02,740 INFO L93 Difference]: Finished difference Result 895 states and 1358 transitions. [2023-11-12 00:55:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:55:02,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 123 [2023-11-12 00:55:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:02,763 INFO L225 Difference]: With dead ends: 895 [2023-11-12 00:55:02,763 INFO L226 Difference]: Without dead ends: 460 [2023-11-12 00:55:02,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:55:02,781 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 18 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:02,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2349 Invalid, 256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:55:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-12 00:55:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2023-11-12 00:55:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 232 states have (on average 1.1896551724137931) internal successors, (276), 235 states have internal predecessors, (276), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (199), 191 states have call predecessors, (199), 191 states have call successors, (199) [2023-11-12 00:55:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 668 transitions. [2023-11-12 00:55:02,896 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 668 transitions. Word has length 123 [2023-11-12 00:55:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:02,897 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 668 transitions. [2023-11-12 00:55:02,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-12 00:55:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 668 transitions. [2023-11-12 00:55:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-12 00:55:02,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:02,903 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:02,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:03,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:03,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:03,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash 911397762, now seen corresponding path program 1 times [2023-11-12 00:55:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:03,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223780879] [2023-11-12 00:55:03,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:03,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-12 00:55:04,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:04,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223780879] [2023-11-12 00:55:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223780879] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:55:04,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411597241] [2023-11-12 00:55:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:04,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:04,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:04,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:04,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:55:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:04,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:55:04,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-12 00:55:05,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:05,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411597241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:05,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:55:05,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-12 00:55:05,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179438745] [2023-11-12 00:55:05,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:05,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:55:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:55:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:55:05,042 INFO L87 Difference]: Start difference. First operand 460 states and 668 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-12 00:55:06,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:06,302 INFO L93 Difference]: Finished difference Result 905 states and 1354 transitions. [2023-11-12 00:55:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:55:06,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 131 [2023-11-12 00:55:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:06,310 INFO L225 Difference]: With dead ends: 905 [2023-11-12 00:55:06,310 INFO L226 Difference]: Without dead ends: 473 [2023-11-12 00:55:06,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:55:06,314 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 37 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:06,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3283 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 00:55:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-12 00:55:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2023-11-12 00:55:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2023-11-12 00:55:06,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 714 transitions. [2023-11-12 00:55:06,372 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 714 transitions. Word has length 131 [2023-11-12 00:55:06,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:06,373 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 714 transitions. [2023-11-12 00:55:06,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-12 00:55:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 714 transitions. [2023-11-12 00:55:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-12 00:55:06,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:06,377 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:06,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:06,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:06,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:06,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -238412761, now seen corresponding path program 1 times [2023-11-12 00:55:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333631121] [2023-11-12 00:55:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:06,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:06,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:06,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690830590] [2023-11-12 00:55:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:06,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:06,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:06,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:06,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:55:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:07,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:55:07,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-12 00:55:07,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:07,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:07,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333631121] [2023-11-12 00:55:07,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:07,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690830590] [2023-11-12 00:55:07,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690830590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:07,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:07,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:55:07,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944694203] [2023-11-12 00:55:07,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:07,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:55:07,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:07,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:55:07,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:55:07,592 INFO L87 Difference]: Start difference. First operand 471 states and 714 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-12 00:55:08,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:08,510 INFO L93 Difference]: Finished difference Result 920 states and 1411 transitions. [2023-11-12 00:55:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:55:08,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 140 [2023-11-12 00:55:08,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:08,520 INFO L225 Difference]: With dead ends: 920 [2023-11-12 00:55:08,521 INFO L226 Difference]: Without dead ends: 477 [2023-11-12 00:55:08,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:55:08,528 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 25 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:08,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2918 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:55:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-12 00:55:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 471. [2023-11-12 00:55:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2023-11-12 00:55:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 714 transitions. [2023-11-12 00:55:08,606 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 714 transitions. Word has length 140 [2023-11-12 00:55:08,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:08,607 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 714 transitions. [2023-11-12 00:55:08,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-12 00:55:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 714 transitions. [2023-11-12 00:55:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-12 00:55:08,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:08,619 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:08,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:08,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:08,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:08,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1106908714, now seen corresponding path program 1 times [2023-11-12 00:55:08,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:08,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161884897] [2023-11-12 00:55:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:08,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:08,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320253795] [2023-11-12 00:55:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:08,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:08,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:08,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:08,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:55:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:09,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:55:09,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-12 00:55:09,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:09,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:09,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161884897] [2023-11-12 00:55:09,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:09,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320253795] [2023-11-12 00:55:09,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320253795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:09,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:09,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:55:09,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266293956] [2023-11-12 00:55:09,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:09,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:55:09,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:55:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:55:09,833 INFO L87 Difference]: Start difference. First operand 471 states and 714 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-12 00:55:11,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:11,311 INFO L93 Difference]: Finished difference Result 922 states and 1408 transitions. [2023-11-12 00:55:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:55:11,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 148 [2023-11-12 00:55:11,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:11,327 INFO L225 Difference]: With dead ends: 922 [2023-11-12 00:55:11,327 INFO L226 Difference]: Without dead ends: 479 [2023-11-12 00:55:11,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:55:11,332 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 48 mSDsluCounter, 3256 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3820 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:11,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3820 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:55:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-12 00:55:11,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 471. [2023-11-12 00:55:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2023-11-12 00:55:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 714 transitions. [2023-11-12 00:55:11,376 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 714 transitions. Word has length 148 [2023-11-12 00:55:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:11,377 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 714 transitions. [2023-11-12 00:55:11,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-12 00:55:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 714 transitions. [2023-11-12 00:55:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-12 00:55:11,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:11,380 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:11,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:11,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:11,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:11,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1186738859, now seen corresponding path program 2 times [2023-11-12 00:55:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:11,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925593693] [2023-11-12 00:55:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:11,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:11,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:11,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728110997] [2023-11-12 00:55:11,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:55:11,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:11,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:11,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:11,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:55:12,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 00:55:12,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:55:12,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:55:12,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-12 00:55:12,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:12,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:12,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925593693] [2023-11-12 00:55:12,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:12,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728110997] [2023-11-12 00:55:12,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728110997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:12,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:12,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:55:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692581142] [2023-11-12 00:55:12,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:12,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:55:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:12,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:55:12,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:55:12,436 INFO L87 Difference]: Start difference. First operand 471 states and 714 transitions. Second operand has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-12 00:55:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:13,277 INFO L93 Difference]: Finished difference Result 894 states and 1373 transitions. [2023-11-12 00:55:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:55:13,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 157 [2023-11-12 00:55:13,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:13,283 INFO L225 Difference]: With dead ends: 894 [2023-11-12 00:55:13,283 INFO L226 Difference]: Without dead ends: 471 [2023-11-12 00:55:13,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:55:13,288 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 0 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:13,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2244 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:55:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-11-12 00:55:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2023-11-12 00:55:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (232), 194 states have call predecessors, (232), 193 states have call successors, (232) [2023-11-12 00:55:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 713 transitions. [2023-11-12 00:55:13,325 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 713 transitions. Word has length 157 [2023-11-12 00:55:13,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:13,326 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 713 transitions. [2023-11-12 00:55:13,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-12 00:55:13,326 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 713 transitions. [2023-11-12 00:55:13,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-12 00:55:13,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:13,329 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:13,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:13,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:13,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:13,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1424700920, now seen corresponding path program 3 times [2023-11-12 00:55:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094702990] [2023-11-12 00:55:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:13,658 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:13,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59958460] [2023-11-12 00:55:13,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 00:55:13,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:13,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:13,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:13,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:55:14,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 00:55:14,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:55:14,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:55:14,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-12 00:55:14,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:14,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:14,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094702990] [2023-11-12 00:55:14,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:14,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59958460] [2023-11-12 00:55:14,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59958460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:14,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:14,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:55:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8507354] [2023-11-12 00:55:14,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:14,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:55:14,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:14,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:55:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:55:14,281 INFO L87 Difference]: Start difference. First operand 471 states and 713 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-12 00:55:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:15,923 INFO L93 Difference]: Finished difference Result 979 states and 1501 transitions. [2023-11-12 00:55:15,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:55:15,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) Word has length 166 [2023-11-12 00:55:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:15,933 INFO L225 Difference]: With dead ends: 979 [2023-11-12 00:55:15,933 INFO L226 Difference]: Without dead ends: 552 [2023-11-12 00:55:15,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:55:15,939 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 71 mSDsluCounter, 3572 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 4195 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:15,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 4195 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:55:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-11-12 00:55:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 544. [2023-11-12 00:55:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 282 states have (on average 1.2056737588652482) internal successors, (340), 287 states have internal predecessors, (340), 224 states have call successors, (224), 34 states have call predecessors, (224), 36 states have return successors, (275), 222 states have call predecessors, (275), 222 states have call successors, (275) [2023-11-12 00:55:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 839 transitions. [2023-11-12 00:55:15,992 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 839 transitions. Word has length 166 [2023-11-12 00:55:15,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:15,993 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 839 transitions. [2023-11-12 00:55:15,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-12 00:55:15,994 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 839 transitions. [2023-11-12 00:55:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-12 00:55:15,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:15,997 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:16,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:16,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:16,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:16,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1864247937, now seen corresponding path program 1 times [2023-11-12 00:55:16,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:16,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185410936] [2023-11-12 00:55:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:16,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:16,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:16,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878959863] [2023-11-12 00:55:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:16,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:16,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:16,338 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:16,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:55:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:17,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:55:17,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-12 00:55:17,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:17,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:17,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185410936] [2023-11-12 00:55:17,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:17,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878959863] [2023-11-12 00:55:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878959863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:17,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:17,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:55:17,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287491688] [2023-11-12 00:55:17,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:17,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:55:17,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:55:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:55:17,424 INFO L87 Difference]: Start difference. First operand 544 states and 839 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-12 00:55:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:19,092 INFO L93 Difference]: Finished difference Result 986 states and 1521 transitions. [2023-11-12 00:55:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:55:19,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 174 [2023-11-12 00:55:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:19,099 INFO L225 Difference]: With dead ends: 986 [2023-11-12 00:55:19,099 INFO L226 Difference]: Without dead ends: 481 [2023-11-12 00:55:19,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:55:19,104 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 99 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:19,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 4311 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:55:19,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-11-12 00:55:19,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2023-11-12 00:55:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 246 states have (on average 1.1910569105691058) internal successors, (293), 249 states have internal predecessors, (293), 196 states have call successors, (196), 33 states have call predecessors, (196), 35 states have return successors, (237), 196 states have call predecessors, (237), 194 states have call successors, (237) [2023-11-12 00:55:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 726 transitions. [2023-11-12 00:55:19,148 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 726 transitions. Word has length 174 [2023-11-12 00:55:19,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:19,150 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 726 transitions. [2023-11-12 00:55:19,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-12 00:55:19,151 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 726 transitions. [2023-11-12 00:55:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-12 00:55:19,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:19,155 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:19,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:19,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:19,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash 68152506, now seen corresponding path program 2 times [2023-11-12 00:55:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:19,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359468187] [2023-11-12 00:55:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:19,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:19,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:19,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478411863] [2023-11-12 00:55:19,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:55:19,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:19,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:19,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:19,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c2eb0b-acbd-41d2-bcd0-a15a95060691/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 00:55:20,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 00:55:20,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:55:20,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-12 00:55:20,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-12 00:55:20,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-12 00:55:20,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:20,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359468187] [2023-11-12 00:55:20,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478411863] [2023-11-12 00:55:20,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478411863] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2098355696] [2023-11-12 00:55:20,925 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2023-11-12 00:55:20,925 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:20,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:20,936 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:20,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs