./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --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 760ec64c2425d439883c5d1074b52af06ed0343ac750305f469404408ecd0aa4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:21:01,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:21:01,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:21:01,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:21:01,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:21:01,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:21:01,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:21:01,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:21:01,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:21:01,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:21:01,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:21:01,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:21:01,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:21:01,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:21:01,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:21:01,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:21:01,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:21:01,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:21:01,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:21:01,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:21:01,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:21:01,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:21:01,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:21:01,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:21:01,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:21:01,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:21:01,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:21:01,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:21:01,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:21:01,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:21:01,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:21:01,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:21:01,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:21:01,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:21:01,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:21:01,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:21:01,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:21:01,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:21:01,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:21:01,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:21:01,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:21:01,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:21:01,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:21:01,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:21:01,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:21:01,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:21:01,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:21:01,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:21:01,771 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:21:01,771 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:21:01,772 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:21:01,772 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:21:01,773 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:21:01,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:21:01,774 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:21:01,774 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:21:01,774 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:21:01,775 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:21:01,775 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:21:01,775 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:21:01,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:21:01,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:21:01,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:21:01,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:21:01,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:21:01,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:21:01,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:21:01,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:21:01,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:21:01,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:21:01,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:21:01,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:21:01,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:21:01,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:21:01,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:21:01,782 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:21:01,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:21:01,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:21:01,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:21:01,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:21:01,783 INFO L138 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_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 760ec64c2425d439883c5d1074b52af06ed0343ac750305f469404408ecd0aa4 [2021-11-23 03:21:02,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:21:02,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:21:02,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:21:02,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:21:02,154 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:21:02,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2021-11-23 03:21:02,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/data/a1c5b3363/89849cb6279b41a19da6b9a6ef5fed96/FLAG851923546 [2021-11-23 03:21:03,492 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:21:03,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2021-11-23 03:21:03,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/data/a1c5b3363/89849cb6279b41a19da6b9a6ef5fed96/FLAG851923546 [2021-11-23 03:21:03,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/data/a1c5b3363/89849cb6279b41a19da6b9a6ef5fed96 [2021-11-23 03:21:03,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:21:03,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:21:03,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:21:03,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:21:03,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:21:03,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:21:03" (1/1) ... [2021-11-23 03:21:03,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d74f077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:03, skipping insertion in model container [2021-11-23 03:21:03,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:21:03" (1/1) ... [2021-11-23 03:21:03,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:21:03,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:21:08,465 WARN L230 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_9be3c142-7d90-4eec-a216-a6ab8a793a7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2021-11-23 03:21:08,468 WARN L230 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_9be3c142-7d90-4eec-a216-a6ab8a793a7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2021-11-23 03:21:08,469 WARN L230 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_9be3c142-7d90-4eec-a216-a6ab8a793a7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2021-11-23 03:21:08,470 WARN L230 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_9be3c142-7d90-4eec-a216-a6ab8a793a7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2021-11-23 03:21:08,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:21:08,537 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:21:09,164 WARN L230 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_9be3c142-7d90-4eec-a216-a6ab8a793a7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2021-11-23 03:21:09,165 WARN L230 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_9be3c142-7d90-4eec-a216-a6ab8a793a7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2021-11-23 03:21:09,165 WARN L230 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_9be3c142-7d90-4eec-a216-a6ab8a793a7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2021-11-23 03:21:09,166 WARN L230 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_9be3c142-7d90-4eec-a216-a6ab8a793a7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2021-11-23 03:21:09,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:21:09,504 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:21:09,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09 WrapperNode [2021-11-23 03:21:09,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:21:09,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:21:09,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:21:09,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:21:09,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:09,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:10,062 INFO L137 Inliner]: procedures = 396, calls = 4490, calls flagged for inlining = 219, calls inlined = 198, statements flattened = 8918 [2021-11-23 03:21:10,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:21:10,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:21:10,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:21:10,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:21:10,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:10,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:10,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:10,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:10,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:10,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:10,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:10,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:21:10,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:21:10,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:21:10,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:21:10,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (1/1) ... [2021-11-23 03:21:10,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:21:10,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:21:10,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:21:10,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3c142-7d90-4eec-a216-a6ab8a793a7a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:21:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2021-11-23 03:21:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2021-11-23 03:21:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-23 03:21:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-23 03:21:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2021-11-23 03:21:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2021-11-23 03:21:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2021-11-23 03:21:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2021-11-23 03:21:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:21:10,674 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:21:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2021-11-23 03:21:10,674 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2021-11-23 03:21:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2021-11-23 03:21:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2021-11-23 03:21:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:21:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:21:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2021-11-23 03:21:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2021-11-23 03:21:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2021-11-23 03:21:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2021-11-23 03:21:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2021-11-23 03:21:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2021-11-23 03:21:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2021-11-23 03:21:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2021-11-23 03:21:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2021-11-23 03:21:10,678 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2021-11-23 03:21:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2021-11-23 03:21:10,678 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2021-11-23 03:21:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2021-11-23 03:21:10,678 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2021-11-23 03:21:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:21:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:21:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-23 03:21:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-23 03:21:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 03:21:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 03:21:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:21:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:21:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:21:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2021-11-23 03:21:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2021-11-23 03:21:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2021-11-23 03:21:10,682 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2021-11-23 03:21:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2021-11-23 03:21:10,684 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2021-11-23 03:21:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 03:21:10,684 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 03:21:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:21:10,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:21:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2021-11-23 03:21:10,685 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2021-11-23 03:21:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2021-11-23 03:21:10,686 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2021-11-23 03:21:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2021-11-23 03:21:10,687 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2021-11-23 03:21:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-23 03:21:10,687 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-23 03:21:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:21:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2021-11-23 03:21:10,688 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2021-11-23 03:21:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-23 03:21:10,688 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-23 03:21:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:21:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:21:10,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:21:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-23 03:21:10,689 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-23 03:21:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2021-11-23 03:21:10,689 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2021-11-23 03:21:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:21:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2021-11-23 03:21:10,691 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2021-11-23 03:21:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:21:10,691 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:21:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 03:21:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 03:21:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2021-11-23 03:21:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2021-11-23 03:21:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2021-11-23 03:21:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2021-11-23 03:21:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2021-11-23 03:21:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2021-11-23 03:21:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:21:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2021-11-23 03:21:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2021-11-23 03:21:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2021-11-23 03:21:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2021-11-23 03:21:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 03:21:10,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 03:21:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2021-11-23 03:21:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2021-11-23 03:21:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 03:21:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 03:21:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:21:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2021-11-23 03:21:10,700 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2021-11-23 03:21:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:21:10,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:21:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2021-11-23 03:21:10,701 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2021-11-23 03:21:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:21:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2021-11-23 03:21:10,702 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2021-11-23 03:21:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2021-11-23 03:21:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2021-11-23 03:21:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:21:10,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-23 03:21:10,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-23 03:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2021-11-23 03:21:10,708 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2021-11-23 03:21:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 03:21:10,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 03:21:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2021-11-23 03:21:10,710 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2021-11-23 03:21:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-23 03:21:10,716 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-23 03:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:21:10,717 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:21:10,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 03:21:10,717 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 03:21:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-23 03:21:10,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-23 03:21:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:21:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:21:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:21:10,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:21:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-23 03:21:10,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-23 03:21:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-23 03:21:10,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-23 03:21:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2021-11-23 03:21:10,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2021-11-23 03:21:10,720 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 03:21:10,720 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 03:21:10,720 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2021-11-23 03:21:10,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2021-11-23 03:21:10,720 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-23 03:21:10,720 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-23 03:21:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2021-11-23 03:21:10,721 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2021-11-23 03:21:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-23 03:21:10,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-23 03:21:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2021-11-23 03:21:10,721 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2021-11-23 03:21:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:21:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:21:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2021-11-23 03:21:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2021-11-23 03:21:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:21:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:21:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 03:21:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 03:21:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 03:21:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 03:21:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:21:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:21:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:21:10,724 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2021-11-23 03:21:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2021-11-23 03:21:10,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:21:10,724 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2021-11-23 03:21:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2021-11-23 03:21:10,724 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2021-11-23 03:21:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2021-11-23 03:21:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2021-11-23 03:21:10,725 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2021-11-23 03:21:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-23 03:21:10,725 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-23 03:21:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:21:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2021-11-23 03:21:10,726 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2021-11-23 03:21:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 03:21:10,726 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 03:21:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2021-11-23 03:21:10,726 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2021-11-23 03:21:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 03:21:10,728 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 03:21:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 03:21:10,729 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 03:21:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2021-11-23 03:21:10,729 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2021-11-23 03:21:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:21:10,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:21:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 03:21:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 03:21:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2021-11-23 03:21:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2021-11-23 03:21:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-23 03:21:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-23 03:21:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 03:21:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 03:21:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2021-11-23 03:21:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2021-11-23 03:21:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-23 03:21:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-23 03:21:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2021-11-23 03:21:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2021-11-23 03:21:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:21:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:21:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2021-11-23 03:21:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2021-11-23 03:21:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2021-11-23 03:21:10,733 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2021-11-23 03:21:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2021-11-23 03:21:10,733 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2021-11-23 03:21:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:21:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2021-11-23 03:21:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2021-11-23 03:21:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:21:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:21:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2021-11-23 03:21:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2021-11-23 03:21:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-23 03:21:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-23 03:21:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 03:21:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 03:21:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2021-11-23 03:21:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2021-11-23 03:21:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:21:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:21:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 03:21:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 03:21:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2021-11-23 03:21:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2021-11-23 03:21:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2021-11-23 03:21:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2021-11-23 03:21:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2021-11-23 03:21:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2021-11-23 03:21:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2021-11-23 03:21:10,738 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2021-11-23 03:21:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2021-11-23 03:21:10,743 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2021-11-23 03:21:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-23 03:21:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:21:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-23 03:21:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-23 03:21:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2021-11-23 03:21:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2021-11-23 03:21:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:21:10,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:21:12,490 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:21:12,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:21:13,060 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:21:34,930 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:21:35,265 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:21:36,820 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:21:36,820 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:21:36,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:21:36 BoogieIcfgContainer [2021-11-23 03:21:36,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:21:36,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:21:36,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:21:36,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:21:36,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:21:03" (1/3) ... [2021-11-23 03:21:36,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a0a0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:21:36, skipping insertion in model container [2021-11-23 03:21:36,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:09" (2/3) ... [2021-11-23 03:21:36,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a0a0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:21:36, skipping insertion in model container [2021-11-23 03:21:36,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:21:36" (3/3) ... [2021-11-23 03:21:36,836 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2021-11-23 03:21:36,842 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:21:36,842 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:21:36,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:21:36,912 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:21:36,912 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:21:36,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 2014 states, 1226 states have (on average 1.3140293637846656) internal successors, (1611), 1229 states have internal predecessors, (1611), 674 states have call successors, (674), 113 states have call predecessors, (674), 112 states have return successors, (666), 666 states have call predecessors, (666), 666 states have call successors, (666) [2021-11-23 03:21:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-23 03:21:37,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:21:37,050 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:21:37,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:21:37,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:21:37,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1795498274, now seen corresponding path program 1 times [2021-11-23 03:21:37,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:21:37,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331340410] [2021-11-23 03:21:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:21:37,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:21:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:21:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2021-11-23 03:21:38,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:21:38,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331340410] [2021-11-23 03:21:38,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331340410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:21:38,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:21:38,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:21:38,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094215062] [2021-11-23 03:21:38,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:21:38,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:21:38,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:21:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:21:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:21:38,483 INFO L87 Difference]: Start difference. First operand has 2014 states, 1226 states have (on average 1.3140293637846656) internal successors, (1611), 1229 states have internal predecessors, (1611), 674 states have call successors, (674), 113 states have call predecessors, (674), 112 states have return successors, (666), 666 states have call predecessors, (666), 666 states have call successors, (666) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-23 03:21:42,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:21:44,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:21:46,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:21:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:21:48,419 INFO L93 Difference]: Finished difference Result 5818 states and 8563 transitions. [2021-11-23 03:21:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:21:48,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 384 [2021-11-23 03:21:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:21:48,479 INFO L225 Difference]: With dead ends: 5818 [2021-11-23 03:21:48,480 INFO L226 Difference]: Without dead ends: 3865 [2021-11-23 03:21:48,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:21:48,503 INFO L933 BasicCegarLoop]: 3165 mSDtfsCounter, 2753 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:21:48,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2760 Valid, 5624 Invalid, 927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-23 03:21:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-11-23 03:21:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3863. [2021-11-23 03:21:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 2370 states have (on average 1.310548523206751) internal successors, (3106), 2375 states have internal predecessors, (3106), 1270 states have call successors, (1270), 222 states have call predecessors, (1270), 221 states have return successors, (1274), 1267 states have call predecessors, (1274), 1267 states have call successors, (1274) [2021-11-23 03:21:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5650 transitions. [2021-11-23 03:21:48,865 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5650 transitions. Word has length 384 [2021-11-23 03:21:48,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:21:48,868 INFO L470 AbstractCegarLoop]: Abstraction has 3863 states and 5650 transitions. [2021-11-23 03:21:48,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-23 03:21:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5650 transitions. [2021-11-23 03:21:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-23 03:21:48,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:21:48,889 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:21:48,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:21:48,890 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:21:48,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:21:48,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1026032585, now seen corresponding path program 1 times [2021-11-23 03:21:48,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:21:48,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162453987] [2021-11-23 03:21:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:21:48,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:21:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:21:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2021-11-23 03:21:49,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:21:49,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162453987] [2021-11-23 03:21:49,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162453987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:21:49,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:21:49,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:21:49,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032830396] [2021-11-23 03:21:49,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:21:49,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:21:49,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:21:49,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:21:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:21:49,518 INFO L87 Difference]: Start difference. First operand 3863 states and 5650 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-23 03:21:53,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:21:56,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:21:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:21:57,622 INFO L93 Difference]: Finished difference Result 11261 states and 16477 transitions. [2021-11-23 03:21:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:21:57,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 438 [2021-11-23 03:21:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:21:57,700 INFO L225 Difference]: With dead ends: 11261 [2021-11-23 03:21:57,700 INFO L226 Difference]: Without dead ends: 7471 [2021-11-23 03:21:57,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:21:57,723 INFO L933 BasicCegarLoop]: 3137 mSDtfsCounter, 2641 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 5596 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:21:57,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2648 Valid, 5596 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 908 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-11-23 03:21:57,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2021-11-23 03:21:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7460. [2021-11-23 03:21:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 4587 states have (on average 1.3091345105733594) internal successors, (6005), 4601 states have internal predecessors, (6005), 2437 states have call successors, (2437), 435 states have call predecessors, (2437), 434 states have return successors, (2462), 2427 states have call predecessors, (2462), 2434 states have call successors, (2462) [2021-11-23 03:21:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 10904 transitions. [2021-11-23 03:21:58,249 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 10904 transitions. Word has length 438 [2021-11-23 03:21:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:21:58,253 INFO L470 AbstractCegarLoop]: Abstraction has 7460 states and 10904 transitions. [2021-11-23 03:21:58,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-23 03:21:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 10904 transitions. [2021-11-23 03:21:58,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-23 03:21:58,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:21:58,288 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:21:58,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:21:58,291 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:21:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:21:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1485067836, now seen corresponding path program 1 times [2021-11-23 03:21:58,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:21:58,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667253472] [2021-11-23 03:21:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:21:58,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:21:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:21:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-23 03:21:59,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:21:59,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667253472] [2021-11-23 03:21:59,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667253472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:21:59,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:21:59,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:21:59,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397882732] [2021-11-23 03:21:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:21:59,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:21:59,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:21:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:21:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:21:59,081 INFO L87 Difference]: Start difference. First operand 7460 states and 10904 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 03:22:03,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:06,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:08,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:10,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:12,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:12,382 INFO L93 Difference]: Finished difference Result 11221 states and 16407 transitions. [2021-11-23 03:22:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:22:12,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 431 [2021-11-23 03:22:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:12,498 INFO L225 Difference]: With dead ends: 11221 [2021-11-23 03:22:12,498 INFO L226 Difference]: Without dead ends: 11196 [2021-11-23 03:22:12,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:22:12,512 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 2810 mSDsluCounter, 6461 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:12,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 8781 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1341 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2021-11-23 03:22:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11196 states. [2021-11-23 03:22:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11196 to 11194. [2021-11-23 03:22:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11194 states, 6887 states have (on average 1.3100043560331058) internal successors, (9022), 6905 states have internal predecessors, (9022), 3649 states have call successors, (3649), 657 states have call predecessors, (3649), 656 states have return successors, (3695), 3637 states have call predecessors, (3695), 3646 states have call successors, (3695) [2021-11-23 03:22:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11194 states to 11194 states and 16366 transitions. [2021-11-23 03:22:13,439 INFO L78 Accepts]: Start accepts. Automaton has 11194 states and 16366 transitions. Word has length 431 [2021-11-23 03:22:13,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:13,441 INFO L470 AbstractCegarLoop]: Abstraction has 11194 states and 16366 transitions. [2021-11-23 03:22:13,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 03:22:13,442 INFO L276 IsEmpty]: Start isEmpty. Operand 11194 states and 16366 transitions. [2021-11-23 03:22:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-23 03:22:13,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:13,478 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:22:13,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:22:13,478 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:22:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1074018903, now seen corresponding path program 1 times [2021-11-23 03:22:13,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:22:13,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854205313] [2021-11-23 03:22:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:13,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5287 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5276 trivial. 0 not checked. [2021-11-23 03:22:13,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:22:13,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854205313] [2021-11-23 03:22:13,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854205313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:13,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:13,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:22:13,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196827621] [2021-11-23 03:22:13,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:13,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:22:13,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:22:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:22:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:22:13,905 INFO L87 Difference]: Start difference. First operand 11194 states and 16366 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 03:22:17,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:20,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:21,844 INFO L93 Difference]: Finished difference Result 24105 states and 35210 transitions. [2021-11-23 03:22:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:22:21,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 460 [2021-11-23 03:22:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:22,093 INFO L225 Difference]: With dead ends: 24105 [2021-11-23 03:22:22,093 INFO L226 Difference]: Without dead ends: 12984 [2021-11-23 03:22:22,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:22:22,167 INFO L933 BasicCegarLoop]: 3184 mSDtfsCounter, 2642 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:22,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2649 Valid, 5661 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 892 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-11-23 03:22:22,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12984 states. [2021-11-23 03:22:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12984 to 12976. [2021-11-23 03:22:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12976 states, 7981 states have (on average 1.30835734870317) internal successors, (10442), 8003 states have internal predecessors, (10442), 4226 states have call successors, (4226), 769 states have call predecessors, (4226), 767 states have return successors, (4272), 4210 states have call predecessors, (4272), 4223 states have call successors, (4272) [2021-11-23 03:22:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12976 states to 12976 states and 18940 transitions. [2021-11-23 03:22:22,941 INFO L78 Accepts]: Start accepts. Automaton has 12976 states and 18940 transitions. Word has length 460 [2021-11-23 03:22:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:22,946 INFO L470 AbstractCegarLoop]: Abstraction has 12976 states and 18940 transitions. [2021-11-23 03:22:22,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 03:22:22,947 INFO L276 IsEmpty]: Start isEmpty. Operand 12976 states and 18940 transitions. [2021-11-23 03:22:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2021-11-23 03:22:23,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:23,005 INFO L514 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 36, 36, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:22:23,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:22:23,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:22:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1098845795, now seen corresponding path program 1 times [2021-11-23 03:22:23,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:22:23,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091621628] [2021-11-23 03:22:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:23,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5277 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5274 trivial. 0 not checked. [2021-11-23 03:22:23,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:22:23,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091621628] [2021-11-23 03:22:23,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091621628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:23,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:23,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:22:23,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192181952] [2021-11-23 03:22:23,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:23,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:22:23,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:22:23,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:22:23,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:22:23,508 INFO L87 Difference]: Start difference. First operand 12976 states and 18940 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-23 03:22:27,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:30,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:31,125 INFO L93 Difference]: Finished difference Result 31305 states and 45506 transitions. [2021-11-23 03:22:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:22:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 478 [2021-11-23 03:22:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:31,269 INFO L225 Difference]: With dead ends: 31305 [2021-11-23 03:22:31,270 INFO L226 Difference]: Without dead ends: 18402 [2021-11-23 03:22:31,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:22:31,353 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 1568 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 5384 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:31,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 5384 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2021-11-23 03:22:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18402 states. [2021-11-23 03:22:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18402 to 18381. [2021-11-23 03:22:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18381 states, 11365 states have (on average 1.3114826220853497) internal successors, (14905), 11413 states have internal predecessors, (14905), 5800 states have call successors, (5800), 1217 states have call predecessors, (5800), 1214 states have return successors, (5888), 5756 states have call predecessors, (5888), 5797 states have call successors, (5888) [2021-11-23 03:22:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18381 states to 18381 states and 26593 transitions. [2021-11-23 03:22:32,715 INFO L78 Accepts]: Start accepts. Automaton has 18381 states and 26593 transitions. Word has length 478 [2021-11-23 03:22:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:32,716 INFO L470 AbstractCegarLoop]: Abstraction has 18381 states and 26593 transitions. [2021-11-23 03:22:32,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-23 03:22:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 18381 states and 26593 transitions. [2021-11-23 03:22:32,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-11-23 03:22:32,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:32,788 INFO L514 BasicCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:22:32,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:22:32,789 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:22:32,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash -500108068, now seen corresponding path program 1 times [2021-11-23 03:22:32,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:22:32,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013918555] [2021-11-23 03:22:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:32,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5629 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5629 trivial. 0 not checked. [2021-11-23 03:22:33,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:22:33,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013918555] [2021-11-23 03:22:33,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013918555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:33,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:33,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:22:33,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498913292] [2021-11-23 03:22:33,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:33,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:22:33,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:22:33,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:22:33,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:22:33,576 INFO L87 Difference]: Start difference. First operand 18381 states and 26593 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-23 03:22:37,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:39,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:41,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:43,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:48,750 INFO L93 Difference]: Finished difference Result 26014 states and 38875 transitions. [2021-11-23 03:22:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:22:48,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 513 [2021-11-23 03:22:48,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:48,895 INFO L225 Difference]: With dead ends: 26014 [2021-11-23 03:22:48,895 INFO L226 Difference]: Without dead ends: 26012 [2021-11-23 03:22:48,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:22:48,915 INFO L933 BasicCegarLoop]: 4470 mSDtfsCounter, 4787 mSDsluCounter, 8320 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 369 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5165 SdHoareTripleChecker+Valid, 11686 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:48,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5165 Valid, 11686 Invalid, 2522 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [369 Valid, 2149 Invalid, 4 Unknown, 0 Unchecked, 14.4s Time] [2021-11-23 03:22:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26012 states. [2021-11-23 03:22:50,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26012 to 18381. [2021-11-23 03:22:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18381 states, 11365 states have (on average 1.3113066432028158) internal successors, (14903), 11413 states have internal predecessors, (14903), 5800 states have call successors, (5800), 1217 states have call predecessors, (5800), 1214 states have return successors, (5888), 5756 states have call predecessors, (5888), 5797 states have call successors, (5888) [2021-11-23 03:22:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18381 states to 18381 states and 26591 transitions. [2021-11-23 03:22:50,330 INFO L78 Accepts]: Start accepts. Automaton has 18381 states and 26591 transitions. Word has length 513 [2021-11-23 03:22:50,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:50,332 INFO L470 AbstractCegarLoop]: Abstraction has 18381 states and 26591 transitions. [2021-11-23 03:22:50,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-23 03:22:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 18381 states and 26591 transitions. [2021-11-23 03:22:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2021-11-23 03:22:50,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:50,419 INFO L514 BasicCegarLoop]: trace histogram [43, 36, 36, 36, 36, 36, 36, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:22:50,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:22:50,420 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:22:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash -868495507, now seen corresponding path program 1 times [2021-11-23 03:22:50,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:22:50,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779725059] [2021-11-23 03:22:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:50,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 5652 trivial. 0 not checked. [2021-11-23 03:22:51,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:22:51,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779725059] [2021-11-23 03:22:51,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779725059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:51,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:51,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:22:51,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735137540] [2021-11-23 03:22:51,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:51,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:22:51,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:22:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:22:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:22:51,120 INFO L87 Difference]: Start difference. First operand 18381 states and 26591 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-23 03:22:55,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:22:57,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:00,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:01,633 INFO L93 Difference]: Finished difference Result 41970 states and 60692 transitions. [2021-11-23 03:23:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:23:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 546 [2021-11-23 03:23:01,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:01,797 INFO L225 Difference]: With dead ends: 41970 [2021-11-23 03:23:01,797 INFO L226 Difference]: Without dead ends: 24611 [2021-11-23 03:23:01,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:23:01,873 INFO L933 BasicCegarLoop]: 3794 mSDtfsCounter, 1597 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 6187 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:01,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 6187 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1193 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-23 03:23:01,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24611 states. [2021-11-23 03:23:03,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24611 to 24590. [2021-11-23 03:23:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24590 states, 15230 states have (on average 1.3129349967170059) internal successors, (19996), 15305 states have internal predecessors, (19996), 7666 states have call successors, (7666), 1696 states have call predecessors, (7666), 1692 states have return successors, (7831), 7594 states have call predecessors, (7831), 7663 states have call successors, (7831) [2021-11-23 03:23:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24590 states to 24590 states and 35493 transitions. [2021-11-23 03:23:03,656 INFO L78 Accepts]: Start accepts. Automaton has 24590 states and 35493 transitions. Word has length 546 [2021-11-23 03:23:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:03,658 INFO L470 AbstractCegarLoop]: Abstraction has 24590 states and 35493 transitions. [2021-11-23 03:23:03,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-23 03:23:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 24590 states and 35493 transitions. [2021-11-23 03:23:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2021-11-23 03:23:03,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:03,764 INFO L514 BasicCegarLoop]: trace histogram [45, 36, 36, 36, 36, 36, 36, 26, 26, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:03,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:23:03,764 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:23:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1018448353, now seen corresponding path program 1 times [2021-11-23 03:23:03,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:23:03,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316595969] [2021-11-23 03:23:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:03,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:23:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7244 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7221 trivial. 0 not checked. [2021-11-23 03:23:04,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:23:04,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316595969] [2021-11-23 03:23:04,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316595969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:04,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:04,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:23:04,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419388460] [2021-11-23 03:23:04,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:04,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:23:04,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:23:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:23:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:23:04,829 INFO L87 Difference]: Start difference. First operand 24590 states and 35493 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-23 03:23:09,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:11,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:15,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:16,841 INFO L93 Difference]: Finished difference Result 70780 states and 102283 transitions. [2021-11-23 03:23:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:23:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 737 [2021-11-23 03:23:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:17,136 INFO L225 Difference]: With dead ends: 70780 [2021-11-23 03:23:17,136 INFO L226 Difference]: Without dead ends: 47212 [2021-11-23 03:23:17,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:23:17,424 INFO L933 BasicCegarLoop]: 4097 mSDtfsCounter, 2650 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2657 SdHoareTripleChecker+Valid, 6553 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:17,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2657 Valid, 6553 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1163 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2021-11-23 03:23:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47212 states. [2021-11-23 03:23:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47212 to 47210. [2021-11-23 03:23:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47210 states, 29318 states have (on average 1.311242240261955) internal successors, (38443), 29411 states have internal predecessors, (38443), 14638 states have call successors, (14638), 3256 states have call predecessors, (14638), 3252 states have return successors, (15041), 14554 states have call predecessors, (15041), 14635 states have call successors, (15041) [2021-11-23 03:23:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47210 states to 47210 states and 68122 transitions. [2021-11-23 03:23:20,555 INFO L78 Accepts]: Start accepts. Automaton has 47210 states and 68122 transitions. Word has length 737 [2021-11-23 03:23:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:20,557 INFO L470 AbstractCegarLoop]: Abstraction has 47210 states and 68122 transitions. [2021-11-23 03:23:20,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-23 03:23:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 47210 states and 68122 transitions. [2021-11-23 03:23:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2021-11-23 03:23:20,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:20,788 INFO L514 BasicCegarLoop]: trace histogram [46, 36, 36, 36, 36, 36, 36, 27, 27, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:20,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:23:20,789 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:23:20,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1354381764, now seen corresponding path program 1 times [2021-11-23 03:23:20,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:23:20,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73985609] [2021-11-23 03:23:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:20,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:23:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7444 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 7380 trivial. 0 not checked. [2021-11-23 03:23:21,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:23:21,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73985609] [2021-11-23 03:23:21,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73985609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:21,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:21,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:23:21,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641850333] [2021-11-23 03:23:21,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:21,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:23:21,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:23:21,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:23:21,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:23:21,740 INFO L87 Difference]: Start difference. First operand 47210 states and 68122 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2021-11-23 03:23:26,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:28,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:35,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:38,221 INFO L93 Difference]: Finished difference Result 109294 states and 157108 transitions. [2021-11-23 03:23:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:23:38,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 755 [2021-11-23 03:23:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:38,576 INFO L225 Difference]: With dead ends: 109294 [2021-11-23 03:23:38,577 INFO L226 Difference]: Without dead ends: 63106 [2021-11-23 03:23:38,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:23:38,792 INFO L933 BasicCegarLoop]: 3973 mSDtfsCounter, 2149 mSDsluCounter, 6224 mSDsCounter, 0 mSdLazyCounter, 2628 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 9152 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2628 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:38,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2156 Valid, 9152 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2628 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2021-11-23 03:23:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63106 states. [2021-11-23 03:23:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63106 to 63085. [2021-11-23 03:23:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63085 states, 39211 states have (on average 1.309964040702864) internal successors, (51365), 39335 states have internal predecessors, (51365), 19216 states have call successors, (19216), 4661 states have call predecessors, (19216), 4656 states have return successors, (19773), 19100 states have call predecessors, (19773), 19213 states have call successors, (19773) [2021-11-23 03:23:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63085 states to 63085 states and 90354 transitions. [2021-11-23 03:23:42,676 INFO L78 Accepts]: Start accepts. Automaton has 63085 states and 90354 transitions. Word has length 755 [2021-11-23 03:23:42,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:42,678 INFO L470 AbstractCegarLoop]: Abstraction has 63085 states and 90354 transitions. [2021-11-23 03:23:42,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2021-11-23 03:23:42,678 INFO L276 IsEmpty]: Start isEmpty. Operand 63085 states and 90354 transitions. [2021-11-23 03:23:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2021-11-23 03:23:42,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:42,895 INFO L514 BasicCegarLoop]: trace histogram [48, 36, 36, 36, 36, 36, 36, 28, 28, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:42,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:23:42,896 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:23:42,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:42,897 INFO L85 PathProgramCache]: Analyzing trace with hash -78811623, now seen corresponding path program 1 times [2021-11-23 03:23:42,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:23:42,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269243750] [2021-11-23 03:23:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:42,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:23:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7764 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7678 trivial. 0 not checked. [2021-11-23 03:23:43,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:23:43,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269243750] [2021-11-23 03:23:43,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269243750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:43,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:43,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:23:43,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67286861] [2021-11-23 03:23:43,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:43,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:23:43,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:23:43,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:23:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:23:43,925 INFO L87 Difference]: Start difference. First operand 63085 states and 90354 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2021-11-23 03:23:47,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:49,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:55,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:23:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:58,766 INFO L93 Difference]: Finished difference Result 137324 states and 196676 transitions. [2021-11-23 03:23:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:23:58,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) Word has length 809 [2021-11-23 03:23:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:59,599 INFO L225 Difference]: With dead ends: 137324 [2021-11-23 03:23:59,599 INFO L226 Difference]: Without dead ends: 75261 [2021-11-23 03:23:59,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:23:59,843 INFO L933 BasicCegarLoop]: 3795 mSDtfsCounter, 1580 mSDsluCounter, 3723 mSDsCounter, 0 mSdLazyCounter, 2136 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 6851 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2136 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:59,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 6851 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2136 Invalid, 3 Unknown, 0 Unchecked, 11.9s Time] [2021-11-23 03:23:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75261 states. [2021-11-23 03:24:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75261 to 75240. [2021-11-23 03:24:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75240 states, 46800 states have (on average 1.3108333333333333) internal successors, (61347), 46955 states have internal predecessors, (61347), 22822 states have call successors, (22822), 5622 states have call predecessors, (22822), 5616 states have return successors, (23533), 22674 states have call predecessors, (23533), 22819 states have call successors, (23533) [2021-11-23 03:24:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75240 states to 75240 states and 107702 transitions. [2021-11-23 03:24:03,821 INFO L78 Accepts]: Start accepts. Automaton has 75240 states and 107702 transitions. Word has length 809 [2021-11-23 03:24:03,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:03,823 INFO L470 AbstractCegarLoop]: Abstraction has 75240 states and 107702 transitions. [2021-11-23 03:24:03,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2021-11-23 03:24:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 75240 states and 107702 transitions. [2021-11-23 03:24:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2021-11-23 03:24:04,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:04,025 INFO L514 BasicCegarLoop]: trace histogram [50, 36, 36, 36, 36, 36, 36, 29, 29, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:04,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:24:04,025 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:24:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash -151814824, now seen corresponding path program 1 times [2021-11-23 03:24:04,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:24:04,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465298490] [2021-11-23 03:24:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:04,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:24:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8090 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 7985 trivial. 0 not checked. [2021-11-23 03:24:05,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:24:05,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465298490] [2021-11-23 03:24:05,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465298490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:05,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:05,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:24:05,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282127621] [2021-11-23 03:24:05,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:05,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:24:05,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:24:05,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:24:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:24:05,138 INFO L87 Difference]: Start difference. First operand 75240 states and 107702 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-23 03:24:09,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:24:11,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:24:18,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:24:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:21,607 INFO L93 Difference]: Finished difference Result 161802 states and 231612 transitions. [2021-11-23 03:24:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:24:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 831 [2021-11-23 03:24:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:22,038 INFO L225 Difference]: With dead ends: 161802 [2021-11-23 03:24:22,038 INFO L226 Difference]: Without dead ends: 87584 [2021-11-23 03:24:22,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:24:22,312 INFO L933 BasicCegarLoop]: 3799 mSDtfsCounter, 1631 mSDsluCounter, 6467 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 9226 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:22,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 9226 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2603 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2021-11-23 03:24:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87584 states. [2021-11-23 03:24:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87584 to 87563. [2021-11-23 03:24:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87563 states, 54497 states have (on average 1.3108427986861662) internal successors, (71437), 54683 states have internal predecessors, (71437), 26464 states have call successors, (26464), 6607 states have call predecessors, (26464), 6600 states have return successors, (27329), 26284 states have call predecessors, (27329), 26461 states have call successors, (27329) [2021-11-23 03:24:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87563 states to 87563 states and 125230 transitions. [2021-11-23 03:24:27,118 INFO L78 Accepts]: Start accepts. Automaton has 87563 states and 125230 transitions. Word has length 831 [2021-11-23 03:24:27,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:27,120 INFO L470 AbstractCegarLoop]: Abstraction has 87563 states and 125230 transitions. [2021-11-23 03:24:27,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-23 03:24:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 87563 states and 125230 transitions. [2021-11-23 03:24:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2021-11-23 03:24:27,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:27,919 INFO L514 BasicCegarLoop]: trace histogram [52, 36, 36, 36, 36, 36, 36, 31, 31, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:27,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:24:27,920 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:24:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1930541050, now seen corresponding path program 1 times [2021-11-23 03:24:27,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:24:27,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599372244] [2021-11-23 03:24:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:27,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:24:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8628 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 8501 trivial. 0 not checked. [2021-11-23 03:24:28,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:24:28,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599372244] [2021-11-23 03:24:28,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599372244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:28,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:28,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:24:28,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933278164] [2021-11-23 03:24:28,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:28,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:24:28,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:24:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:24:28,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:24:28,691 INFO L87 Difference]: Start difference. First operand 87563 states and 125230 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2021-11-23 03:24:33,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:24:35,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:24:41,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:24:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:47,222 INFO L93 Difference]: Finished difference Result 215709 states and 313724 transitions. [2021-11-23 03:24:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:24:47,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) Word has length 872 [2021-11-23 03:24:47,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:47,977 INFO L225 Difference]: With dead ends: 215709 [2021-11-23 03:24:47,978 INFO L226 Difference]: Without dead ends: 129168 [2021-11-23 03:24:48,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:24:48,738 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 2812 mSDsluCounter, 8262 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 332 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3160 SdHoareTripleChecker+Valid, 11649 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:48,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3160 Valid, 11649 Invalid, 2608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2273 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2021-11-23 03:24:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129168 states. [2021-11-23 03:24:54,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129168 to 99778. [2021-11-23 03:24:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99778 states, 62110 states have (on average 1.3112703268394783) internal successors, (81443), 62327 states have internal predecessors, (81443), 30094 states have call successors, (30094), 7580 states have call predecessors, (30094), 7572 states have return successors, (31113), 29882 states have call predecessors, (31113), 30091 states have call successors, (31113) [2021-11-23 03:24:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99778 states to 99778 states and 142650 transitions. [2021-11-23 03:24:55,126 INFO L78 Accepts]: Start accepts. Automaton has 99778 states and 142650 transitions. Word has length 872 [2021-11-23 03:24:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:55,128 INFO L470 AbstractCegarLoop]: Abstraction has 99778 states and 142650 transitions. [2021-11-23 03:24:55,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2021-11-23 03:24:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 99778 states and 142650 transitions. [2021-11-23 03:24:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2021-11-23 03:24:55,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:55,443 INFO L514 BasicCegarLoop]: trace histogram [52, 36, 36, 36, 36, 36, 36, 31, 31, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:55,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:24:55,444 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:24:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash 581013380, now seen corresponding path program 1 times [2021-11-23 03:24:55,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:24:55,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823567701] [2021-11-23 03:24:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:55,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:24:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8628 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 8501 trivial. 0 not checked. [2021-11-23 03:24:56,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:24:56,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823567701] [2021-11-23 03:24:56,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823567701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:56,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:56,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:24:56,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466150437] [2021-11-23 03:24:56,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:56,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:24:56,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:24:56,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:24:56,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:24:56,719 INFO L87 Difference]: Start difference. First operand 99778 states and 142650 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88)