./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fusbh200-hcd.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fusbh200-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS --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 75d771e19772a57b21074e06711081dc081595b4f25061866f48f5c3a4ce05c4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:29:05,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:29:05,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:29:05,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:29:05,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:29:05,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:29:05,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:29:05,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:29:05,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:29:05,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:29:05,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:29:05,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:29:05,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:29:05,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:29:05,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:29:05,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:29:05,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:29:05,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:29:05,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:29:05,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:29:05,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:29:05,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:29:05,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:29:05,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:29:05,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:29:05,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:29:05,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:29:05,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:29:05,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:29:05,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:29:05,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:29:05,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:29:05,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:29:05,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:29:05,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:29:05,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:29:05,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:29:05,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:29:05,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:29:05,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:29:05,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:29:05,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:29:05,759 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:29:05,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:29:05,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:29:05,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:29:05,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:29:05,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:29:05,761 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:29:05,761 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:29:05,761 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:29:05,761 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:29:05,761 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:29:05,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:29:05,762 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:29:05,762 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:29:05,762 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:29:05,762 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:29:05,766 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:29:05,767 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:29:05,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:29:05,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:29:05,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:29:05,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:29:05,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:29:05,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:29:05,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:29:05,769 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:29:05,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:29:05,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:29:05,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:29:05,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:29:05,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:29:05,771 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:29:05,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:29:05,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:29:05,772 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:29:05,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:29:05,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:29:05,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:29:05,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75d771e19772a57b21074e06711081dc081595b4f25061866f48f5c3a4ce05c4 [2022-11-19 08:29:06,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:29:06,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:29:06,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:29:06,163 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:29:06,163 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:29:06,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fusbh200-hcd.ko-entry_point.cil.out.i [2022-11-19 08:29:06,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/data/3478ed094/230f73cc483748508a087a8f3d708dcf/FLAG096d3bd0b [2022-11-19 08:29:07,243 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:29:07,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fusbh200-hcd.ko-entry_point.cil.out.i [2022-11-19 08:29:07,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/data/3478ed094/230f73cc483748508a087a8f3d708dcf/FLAG096d3bd0b [2022-11-19 08:29:07,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/data/3478ed094/230f73cc483748508a087a8f3d708dcf [2022-11-19 08:29:07,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:29:07,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:29:07,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:29:07,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:29:07,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:29:07,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:29:07" (1/1) ... [2022-11-19 08:29:07,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f2e083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:07, skipping insertion in model container [2022-11-19 08:29:07,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:29:07" (1/1) ... [2022-11-19 08:29:07,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:29:07,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:29:10,512 WARN L234 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_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fusbh200-hcd.ko-entry_point.cil.out.i[372305,372318] [2022-11-19 08:29:10,590 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-19 08:29:10,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:29:10,636 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:29:11,295 WARN L234 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_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fusbh200-hcd.ko-entry_point.cil.out.i[372305,372318] [2022-11-19 08:29:11,301 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-19 08:29:11,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:29:11,429 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:29:11,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11 WrapperNode [2022-11-19 08:29:11,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:29:11,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:29:11,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:29:11,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:29:11,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:11,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:11,991 INFO L138 Inliner]: procedures = 333, calls = 4727, calls flagged for inlining = 151, calls inlined = 148, statements flattened = 12160 [2022-11-19 08:29:11,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:29:11,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:29:11,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:29:11,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:29:12,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:12,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:12,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:12,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:12,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:12,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:12,505 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:12,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:12,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:29:12,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:29:12,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:29:12,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:29:12,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (1/1) ... [2022-11-19 08:29:12,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:29:12,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:29:12,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:29:12,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbdd86f-8a2e-4d96-92c5-e75aa8277c42/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:29:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure single_unlink_async [2022-11-19 08:29:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure single_unlink_async [2022-11-19 08:29:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_writel [2022-11-19 08:29:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_writel [2022-11-19 08:29:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2022-11-19 08:29:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2022-11-19 08:29:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_status_buf [2022-11-19 08:29:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_status_buf [2022-11-19 08:29:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-11-19 08:29:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-11-19 08:29:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_endpoint_disable [2022-11-19 08:29:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_endpoint_disable [2022-11-19 08:29:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_urb_enqueue [2022-11-19 08:29:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_urb_enqueue [2022-11-19 08:29:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:29:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:29:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:29:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:29:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure turn_on_io_watchdog [2022-11-19 08:29:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure turn_on_io_watchdog [2022-11-19 08:29:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_enable_event [2022-11-19 08:29:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_enable_event [2022-11-19 08:29:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-19 08:29:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-19 08:29:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_endpoint_reset [2022-11-19 08:29:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_endpoint_reset [2022-11-19 08:29:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 08:29:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 08:29:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:29:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:29:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2022-11-19 08:29:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2022-11-19 08:29:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_disabled [2022-11-19 08:29:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_disabled [2022-11-19 08:29:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure qh_destroy [2022-11-19 08:29:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_destroy [2022-11-19 08:29:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure end_free_itds [2022-11-19 08:29:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure end_free_itds [2022-11-19 08:29:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_quiesce [2022-11-19 08:29:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_quiesce [2022-11-19 08:29:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_clear_command_bit [2022-11-19 08:29:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_clear_command_bit [2022-11-19 08:29:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:29:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:29:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:29:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:29:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_next_shadow [2022-11-19 08:29:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_next_shadow [2022-11-19 08:29:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_hcd_probe [2022-11-19 08:29:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_hcd_probe [2022-11-19 08:29:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2022-11-19 08:29:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2022-11-19 08:29:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_silence_controller [2022-11-19 08:29:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_silence_controller [2022-11-19 08:29:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:29:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:29:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:29:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:29:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_relinquish_port [2022-11-19 08:29:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_relinquish_port [2022-11-19 08:29:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_intr [2022-11-19 08:29:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_intr [2022-11-19 08:29:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:29:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:29:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2022-11-19 08:29:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2022-11-19 08:29:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2022-11-19 08:29:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2022-11-19 08:29:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_qtd_alloc [2022-11-19 08:29:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_qtd_alloc [2022-11-19 08:29:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-19 08:29:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-19 08:29:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure start_free_itds [2022-11-19 08:29:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure start_free_itds [2022-11-19 08:29:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:29:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:29:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:29:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure bus_to_hcd [2022-11-19 08:29:12,678 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_to_hcd [2022-11-19 08:29:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_port_handed_over [2022-11-19 08:29:12,678 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_port_handed_over [2022-11-19 08:29:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_list_free [2022-11-19 08:29:12,678 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_list_free [2022-11-19 08:29:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:29:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:29:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2022-11-19 08:29:12,679 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2022-11-19 08:29:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-19 08:29:12,679 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-19 08:29:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_fill [2022-11-19 08:29:12,680 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_fill [2022-11-19 08:29:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_set_command_bit [2022-11-19 08:29:12,680 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_set_command_bit [2022-11-19 08:29:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 08:29:12,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 08:29:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 08:29:12,681 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 08:29:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_stop [2022-11-19 08:29:12,681 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_stop [2022-11-19 08:29:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2022-11-19 08:29:12,681 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2022-11-19 08:29:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-19 08:29:12,681 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-19 08:29:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_handle_intr_unlinks [2022-11-19 08:29:12,682 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_handle_intr_unlinks [2022-11-19 08:29:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:29:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 08:29:12,682 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 08:29:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:29:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_command_buf [2022-11-19 08:29:12,683 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_command_buf [2022-11-19 08:29:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure start_iaa_cycle [2022-11-19 08:29:12,683 INFO L138 BoogieDeclarations]: Found implementation of procedure start_iaa_cycle [2022-11-19 08:29:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-19 08:29:12,684 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-19 08:29:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_usecs [2022-11-19 08:29:12,684 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_usecs [2022-11-19 08:29:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_fusbh200 [2022-11-19 08:29:12,684 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_fusbh200 [2022-11-19 08:29:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 08:29:12,685 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 08:29:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-19 08:29:12,685 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-19 08:29:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:29:12,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:29:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_to_hcd [2022-11-19 08:29:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_to_hcd [2022-11-19 08:29:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2022-11-19 08:29:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2022-11-19 08:29:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:29:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:29:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure disable_periodic [2022-11-19 08:29:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_periodic [2022-11-19 08:29:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2022-11-19 08:29:12,687 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2022-11-19 08:29:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure enable_periodic [2022-11-19 08:29:12,687 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_periodic [2022-11-19 08:29:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_urb_dequeue [2022-11-19 08:29:12,687 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_urb_dequeue [2022-11-19 08:29:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure qh_lines [2022-11-19 08:29:12,688 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_lines [2022-11-19 08:29:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_readl [2022-11-19 08:29:12,688 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_readl [2022-11-19 08:29:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_halt [2022-11-19 08:29:12,688 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_halt [2022-11-19 08:29:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-19 08:29:12,689 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-19 08:29:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_clear_tt_buffer_complete [2022-11-19 08:29:12,689 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_clear_tt_buffer_complete [2022-11-19 08:29:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 08:29:12,689 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 08:29:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_urb_done [2022-11-19 08:29:12,689 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_urb_done [2022-11-19 08:29:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_poll_ASS [2022-11-19 08:29:12,690 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_poll_ASS [2022-11-19 08:29:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_handle_controller_death [2022-11-19 08:29:12,690 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_handle_controller_death [2022-11-19 08:29:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_mem_cleanup [2022-11-19 08:29:12,690 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_mem_cleanup [2022-11-19 08:29:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2022-11-19 08:29:12,691 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2022-11-19 08:29:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:29:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure qh_schedule [2022-11-19 08:29:12,691 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_schedule [2022-11-19 08:29:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure check_intr_schedule [2022-11-19 08:29:12,691 INFO L138 BoogieDeclarations]: Found implementation of procedure check_intr_schedule [2022-11-19 08:29:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-19 08:29:12,692 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-19 08:29:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_qtd_init [2022-11-19 08:29:12,692 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_qtd_init [2022-11-19 08:29:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:29:12,692 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:29:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 08:29:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 08:29:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_reset [2022-11-19 08:29:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_reset [2022-11-19 08:29:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-19 08:29:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-19 08:29:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-19 08:29:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-19 08:29:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_hub_status_data [2022-11-19 08:29:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_hub_status_data [2022-11-19 08:29:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:29:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:29:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-19 08:29:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-19 08:29:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 08:29:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 08:29:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:29:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_hcd_remove [2022-11-19 08:29:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_hcd_remove [2022-11-19 08:29:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_link_urb_to_ep [2022-11-19 08:29:12,696 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_link_urb_to_ep [2022-11-19 08:29:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-19 08:29:12,696 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-19 08:29:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:29:12,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:29:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure iso_sched_free [2022-11-19 08:29:12,697 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_sched_free [2022-11-19 08:29:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_get_frame [2022-11-19 08:29:12,697 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_get_frame [2022-11-19 08:29:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 08:29:12,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 08:29:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_poll_PSS [2022-11-19 08:29:12,698 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_poll_PSS [2022-11-19 08:29:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:29:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-11-19 08:29:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 08:29:12,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 08:29:12,699 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-19 08:29:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-19 08:29:12,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:29:12,699 INFO L130 BoogieDeclarations]: Found specification of procedure usb_calc_bus_time [2022-11-19 08:29:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_calc_bus_time [2022-11-19 08:29:12,699 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2022-11-19 08:29:12,700 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2022-11-19 08:29:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure qh_link_async [2022-11-19 08:29:12,700 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_link_async [2022-11-19 08:29:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:29:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_qtd_free [2022-11-19 08:29:12,700 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_qtd_free [2022-11-19 08:29:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure qh_urb_transaction [2022-11-19 08:29:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_urb_transaction [2022-11-19 08:29:12,701 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_qh_alloc [2022-11-19 08:29:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_qh_alloc [2022-11-19 08:29:12,701 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-19 08:29:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-19 08:29:12,701 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:29:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:29:12,702 INFO L130 BoogieDeclarations]: Found specification of procedure check_period [2022-11-19 08:29:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure check_period [2022-11-19 08:29:12,702 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_fusbh200_init [2022-11-19 08:29:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_fusbh200_init [2022-11-19 08:29:12,702 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-11-19 08:29:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-11-19 08:29:12,703 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2022-11-19 08:29:12,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2022-11-19 08:29:12,703 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 08:29:12,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 08:29:12,703 INFO L130 BoogieDeclarations]: Found specification of procedure shadow_next_periodic [2022-11-19 08:29:12,703 INFO L138 BoogieDeclarations]: Found implementation of procedure shadow_next_periodic [2022-11-19 08:29:12,704 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_read_frame_index [2022-11-19 08:29:12,704 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_read_frame_index [2022-11-19 08:29:12,704 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-19 08:29:12,704 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-19 08:29:12,704 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_shutdown [2022-11-19 08:29:12,704 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_shutdown [2022-11-19 08:29:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2022-11-19 08:29:12,705 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2022-11-19 08:29:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure handshake [2022-11-19 08:29:12,705 INFO L138 BoogieDeclarations]: Found implementation of procedure handshake [2022-11-19 08:29:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2022-11-19 08:29:12,705 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2022-11-19 08:29:12,706 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_work [2022-11-19 08:29:12,706 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_work [2022-11-19 08:29:12,706 INFO L130 BoogieDeclarations]: Found specification of procedure qh_refresh [2022-11-19 08:29:12,706 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_refresh [2022-11-19 08:29:12,706 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:29:12,706 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:29:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2022-11-19 08:29:12,707 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2022-11-19 08:29:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 08:29:12,707 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 08:29:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2022-11-19 08:29:12,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2022-11-19 08:29:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 08:29:12,708 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 08:29:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_run [2022-11-19 08:29:12,708 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_run [2022-11-19 08:29:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 08:29:12,708 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 08:29:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 08:29:12,709 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 08:29:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:29:12,709 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:29:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure qh_append_tds [2022-11-19 08:29:12,709 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_append_tds [2022-11-19 08:29:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:29:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_hub_control [2022-11-19 08:29:12,710 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_hub_control [2022-11-19 08:29:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-19 08:29:12,710 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-19 08:29:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_port_speed [2022-11-19 08:29:12,710 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_port_speed [2022-11-19 08:29:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_clear_tt_buffer [2022-11-19 08:29:12,711 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_clear_tt_buffer [2022-11-19 08:29:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure fusbh200_irq [2022-11-19 08:29:12,711 INFO L138 BoogieDeclarations]: Found implementation of procedure fusbh200_irq [2022-11-19 08:29:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:29:12,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:29:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-19 08:29:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-19 08:29:14,114 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:29:14,118 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:29:16,379 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:29:27,787 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_platform_driver_unregister_29_returnLabel#1: assume { :end_inline_ldv_platform_driver_unregister_29 } true; [2022-11-19 08:29:28,239 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:29:33,308 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:29:33,309 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 08:29:33,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:29:33 BoogieIcfgContainer [2022-11-19 08:29:33,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:29:33,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:29:33,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:29:33,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:29:33,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:29:07" (1/3) ... [2022-11-19 08:29:33,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf30b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:29:33, skipping insertion in model container [2022-11-19 08:29:33,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:11" (2/3) ... [2022-11-19 08:29:33,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf30b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:29:33, skipping insertion in model container [2022-11-19 08:29:33,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:29:33" (3/3) ... [2022-11-19 08:29:33,328 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fusbh200-hcd.ko-entry_point.cil.out.i [2022-11-19 08:29:33,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:29:33,379 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:29:33,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:29:33,523 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b667262, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:29:33,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:29:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 2935 states, 1827 states have (on average 1.3437328954570333) internal successors, (2455), 1913 states have internal predecessors, (2455), 968 states have call successors, (968), 139 states have call predecessors, (968), 138 states have return successors, (960), 941 states have call predecessors, (960), 960 states have call successors, (960) [2022-11-19 08:29:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-19 08:29:33,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:33,557 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:33,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash 344055582, now seen corresponding path program 1 times [2022-11-19 08:29:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:33,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289912330] [2022-11-19 08:29:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:33,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:29:35,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:35,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289912330] [2022-11-19 08:29:35,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289912330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:35,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:35,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:29:35,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019809607] [2022-11-19 08:29:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:35,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:35,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:35,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:35,211 INFO L87 Difference]: Start difference. First operand has 2935 states, 1827 states have (on average 1.3437328954570333) internal successors, (2455), 1913 states have internal predecessors, (2455), 968 states have call successors, (968), 139 states have call predecessors, (968), 138 states have return successors, (960), 941 states have call predecessors, (960), 960 states have call successors, (960) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:29:37,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:42,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:42,542 INFO L93 Difference]: Finished difference Result 8658 states and 13009 transitions. [2022-11-19 08:29:42,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:42,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 296 [2022-11-19 08:29:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:42,599 INFO L225 Difference]: With dead ends: 8658 [2022-11-19 08:29:42,599 INFO L226 Difference]: Without dead ends: 5731 [2022-11-19 08:29:42,623 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:29:42,626 INFO L413 NwaCegarLoop]: 4915 mSDtfsCounter, 4336 mSDsluCounter, 3894 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 8809 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:42,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4336 Valid, 8809 Invalid, 786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-19 08:29:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5731 states. [2022-11-19 08:29:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5731 to 5726. [2022-11-19 08:29:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5726 states, 3581 states have (on average 1.3392907009215302) internal successors, (4796), 3733 states have internal predecessors, (4796), 1873 states have call successors, (1873), 272 states have call predecessors, (1873), 271 states have return successors, (1871), 1832 states have call predecessors, (1871), 1871 states have call successors, (1871) [2022-11-19 08:29:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 8540 transitions. [2022-11-19 08:29:43,127 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 8540 transitions. Word has length 296 [2022-11-19 08:29:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:43,131 INFO L495 AbstractCegarLoop]: Abstraction has 5726 states and 8540 transitions. [2022-11-19 08:29:43,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:29:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 8540 transitions. [2022-11-19 08:29:43,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-19 08:29:43,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:43,147 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:43,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:29:43,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:43,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash 619733088, now seen corresponding path program 1 times [2022-11-19 08:29:43,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:43,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4955133] [2022-11-19 08:29:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:43,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:29:43,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:43,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4955133] [2022-11-19 08:29:43,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4955133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:43,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:43,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:29:43,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552785301] [2022-11-19 08:29:43,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:43,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:43,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:43,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:43,993 INFO L87 Difference]: Start difference. First operand 5726 states and 8540 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:29:46,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:51,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:51,169 INFO L93 Difference]: Finished difference Result 17009 states and 25365 transitions. [2022-11-19 08:29:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:51,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 297 [2022-11-19 08:29:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:51,269 INFO L225 Difference]: With dead ends: 17009 [2022-11-19 08:29:51,269 INFO L226 Difference]: Without dead ends: 11344 [2022-11-19 08:29:51,305 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:29:51,307 INFO L413 NwaCegarLoop]: 4898 mSDtfsCounter, 4199 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4199 SdHoareTripleChecker+Valid, 8835 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:51,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4199 Valid, 8835 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 784 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-19 08:29:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11344 states. [2022-11-19 08:29:52,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11344 to 11338. [2022-11-19 08:29:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11338 states, 7095 states have (on average 1.3399577167019028) internal successors, (9507), 7399 states have internal predecessors, (9507), 3701 states have call successors, (3701), 542 states have call predecessors, (3701), 541 states have return successors, (3699), 3620 states have call predecessors, (3699), 3699 states have call successors, (3699) [2022-11-19 08:29:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11338 states to 11338 states and 16907 transitions. [2022-11-19 08:29:52,125 INFO L78 Accepts]: Start accepts. Automaton has 11338 states and 16907 transitions. Word has length 297 [2022-11-19 08:29:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:52,131 INFO L495 AbstractCegarLoop]: Abstraction has 11338 states and 16907 transitions. [2022-11-19 08:29:52,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:29:52,132 INFO L276 IsEmpty]: Start isEmpty. Operand 11338 states and 16907 transitions. [2022-11-19 08:29:52,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-19 08:29:52,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:52,138 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:52,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:29:52,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:52,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1575837666, now seen corresponding path program 1 times [2022-11-19 08:29:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:52,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555988015] [2022-11-19 08:29:52,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:52,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:29:53,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:53,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555988015] [2022-11-19 08:29:53,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555988015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:53,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:53,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:29:53,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954644149] [2022-11-19 08:29:53,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:53,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:53,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:53,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:53,103 INFO L87 Difference]: Start difference. First operand 11338 states and 16907 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:29:55,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:00,562 INFO L93 Difference]: Finished difference Result 33508 states and 49944 transitions. [2022-11-19 08:30:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:00,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 302 [2022-11-19 08:30:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:00,930 INFO L225 Difference]: With dead ends: 33508 [2022-11-19 08:30:00,931 INFO L226 Difference]: Without dead ends: 22231 [2022-11-19 08:30:00,997 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:30:01,001 INFO L413 NwaCegarLoop]: 5182 mSDtfsCounter, 4173 mSDsluCounter, 3936 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 9118 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:01,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 9118 Invalid, 834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 832 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-19 08:30:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22231 states. [2022-11-19 08:30:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22231 to 22227. [2022-11-19 08:30:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22227 states, 13916 states have (on average 1.3399683817188848) internal successors, (18647), 14506 states have internal predecessors, (18647), 7237 states have call successors, (7237), 1074 states have call predecessors, (7237), 1073 states have return successors, (7235), 7087 states have call predecessors, (7235), 7235 states have call successors, (7235) [2022-11-19 08:30:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22227 states to 22227 states and 33119 transitions. [2022-11-19 08:30:02,615 INFO L78 Accepts]: Start accepts. Automaton has 22227 states and 33119 transitions. Word has length 302 [2022-11-19 08:30:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:02,616 INFO L495 AbstractCegarLoop]: Abstraction has 22227 states and 33119 transitions. [2022-11-19 08:30:02,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:30:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 22227 states and 33119 transitions. [2022-11-19 08:30:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-19 08:30:02,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:02,625 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:30:02,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:30:02,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2013220184, now seen corresponding path program 1 times [2022-11-19 08:30:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:02,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168175910] [2022-11-19 08:30:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:02,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:30:03,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:03,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168175910] [2022-11-19 08:30:03,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168175910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:03,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:03,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440410034] [2022-11-19 08:30:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:03,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:03,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:03,360 INFO L87 Difference]: Start difference. First operand 22227 states and 33119 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-19 08:30:05,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:11,061 INFO L93 Difference]: Finished difference Result 56982 states and 84205 transitions. [2022-11-19 08:30:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:11,061 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), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 328 [2022-11-19 08:30:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:11,304 INFO L225 Difference]: With dead ends: 56982 [2022-11-19 08:30:11,304 INFO L226 Difference]: Without dead ends: 34816 [2022-11-19 08:30:11,432 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:30:11,436 INFO L413 NwaCegarLoop]: 5691 mSDtfsCounter, 2508 mSDsluCounter, 3829 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 9520 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:11,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2508 Valid, 9520 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1058 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 08:30:11,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34816 states. [2022-11-19 08:30:13,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34816 to 34808. [2022-11-19 08:30:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34808 states, 21842 states have (on average 1.3308305100265543) internal successors, (29068), 22738 states have internal predecessors, (29068), 11047 states have call successors, (11047), 1919 states have call predecessors, (11047), 1918 states have return successors, (11045), 10816 states have call predecessors, (11045), 11045 states have call successors, (11045) [2022-11-19 08:30:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34808 states to 34808 states and 51160 transitions. [2022-11-19 08:30:13,967 INFO L78 Accepts]: Start accepts. Automaton has 34808 states and 51160 transitions. Word has length 328 [2022-11-19 08:30:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:13,970 INFO L495 AbstractCegarLoop]: Abstraction has 34808 states and 51160 transitions. [2022-11-19 08:30:13,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-19 08:30:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 34808 states and 51160 transitions. [2022-11-19 08:30:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-19 08:30:13,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:13,981 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2022-11-19 08:30:13,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:30:13,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:13,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash 759737861, now seen corresponding path program 1 times [2022-11-19 08:30:13,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:13,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123556306] [2022-11-19 08:30:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:13,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-19 08:30:15,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:15,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123556306] [2022-11-19 08:30:15,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123556306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:15,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:15,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:30:15,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557917147] [2022-11-19 08:30:15,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:15,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:30:15,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:15,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:30:15,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:30:15,706 INFO L87 Difference]: Start difference. First operand 34808 states and 51160 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, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 08:30:17,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:23,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:23,840 INFO L93 Difference]: Finished difference Result 69603 states and 102295 transitions. [2022-11-19 08:30:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:30:23,841 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, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 445 [2022-11-19 08:30:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:24,018 INFO L225 Difference]: With dead ends: 69603 [2022-11-19 08:30:24,018 INFO L226 Difference]: Without dead ends: 34808 [2022-11-19 08:30:24,155 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:30:24,157 INFO L413 NwaCegarLoop]: 3949 mSDtfsCounter, 3 mSDsluCounter, 7893 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11842 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:24,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11842 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1159 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-19 08:30:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34808 states. [2022-11-19 08:30:26,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34808 to 34808. [2022-11-19 08:30:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34808 states, 21842 states have (on average 1.3300979763757899) internal successors, (29052), 22738 states have internal predecessors, (29052), 11047 states have call successors, (11047), 1919 states have call predecessors, (11047), 1918 states have return successors, (11045), 10816 states have call predecessors, (11045), 11045 states have call successors, (11045) [2022-11-19 08:30:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34808 states to 34808 states and 51144 transitions. [2022-11-19 08:30:26,628 INFO L78 Accepts]: Start accepts. Automaton has 34808 states and 51144 transitions. Word has length 445 [2022-11-19 08:30:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:26,629 INFO L495 AbstractCegarLoop]: Abstraction has 34808 states and 51144 transitions. [2022-11-19 08:30:26,629 INFO L496 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, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 08:30:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 34808 states and 51144 transitions. [2022-11-19 08:30:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-19 08:30:26,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:26,640 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2022-11-19 08:30:26,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:30:26,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash -50675963, now seen corresponding path program 1 times [2022-11-19 08:30:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:26,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36548552] [2022-11-19 08:30:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-19 08:30:28,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:28,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36548552] [2022-11-19 08:30:28,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36548552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:28,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:28,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:28,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758896090] [2022-11-19 08:30:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:28,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:28,098 INFO L87 Difference]: Start difference. First operand 34808 states and 51144 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:30:30,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:35,892 INFO L93 Difference]: Finished difference Result 86250 states and 126732 transitions. [2022-11-19 08:30:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:35,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 473 [2022-11-19 08:30:35,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:36,152 INFO L225 Difference]: With dead ends: 86250 [2022-11-19 08:30:36,152 INFO L226 Difference]: Without dead ends: 51503 [2022-11-19 08:30:36,297 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:30:36,297 INFO L413 NwaCegarLoop]: 5504 mSDtfsCounter, 4219 mSDsluCounter, 3929 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 9433 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:36,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4219 Valid, 9433 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 886 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-19 08:30:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51503 states. [2022-11-19 08:30:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51503 to 51498. [2022-11-19 08:30:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51498 states, 32337 states have (on average 1.3297770355939018) internal successors, (43001), 33653 states have internal predecessors, (43001), 16317 states have call successors, (16317), 2844 states have call predecessors, (16317), 2843 states have return successors, (16315), 15980 states have call predecessors, (16315), 16315 states have call successors, (16315) [2022-11-19 08:30:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51498 states to 51498 states and 75633 transitions. [2022-11-19 08:30:38,992 INFO L78 Accepts]: Start accepts. Automaton has 51498 states and 75633 transitions. Word has length 473 [2022-11-19 08:30:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:38,993 INFO L495 AbstractCegarLoop]: Abstraction has 51498 states and 75633 transitions. [2022-11-19 08:30:38,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:30:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 51498 states and 75633 transitions. [2022-11-19 08:30:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-19 08:30:39,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:39,008 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2022-11-19 08:30:39,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:30:39,009 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:39,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1267957081, now seen corresponding path program 1 times [2022-11-19 08:30:39,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:39,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145230749] [2022-11-19 08:30:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:39,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-19 08:30:40,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:40,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145230749] [2022-11-19 08:30:40,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145230749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:40,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:40,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:40,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830386473] [2022-11-19 08:30:40,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:40,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:40,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:40,246 INFO L87 Difference]: Start difference. First operand 51498 states and 75633 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:30:42,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:48,417 INFO L93 Difference]: Finished difference Result 127288 states and 186940 transitions. [2022-11-19 08:30:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:48,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 474 [2022-11-19 08:30:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:48,803 INFO L225 Difference]: With dead ends: 127288 [2022-11-19 08:30:48,803 INFO L226 Difference]: Without dead ends: 75851 [2022-11-19 08:30:49,201 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:30:49,202 INFO L413 NwaCegarLoop]: 5367 mSDtfsCounter, 4214 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 9291 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:49,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4214 Valid, 9291 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 857 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-19 08:30:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75851 states. [2022-11-19 08:30:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75851 to 75844. [2022-11-19 08:30:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75844 states, 47656 states have (on average 1.3293604163169381) internal successors, (63352), 49574 states have internal predecessors, (63352), 23990 states have call successors, (23990), 4198 states have call predecessors, (23990), 4197 states have return successors, (23988), 23503 states have call predecessors, (23988), 23988 states have call successors, (23988) [2022-11-19 08:30:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75844 states to 75844 states and 111330 transitions. [2022-11-19 08:30:52,639 INFO L78 Accepts]: Start accepts. Automaton has 75844 states and 111330 transitions. Word has length 474 [2022-11-19 08:30:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:52,640 INFO L495 AbstractCegarLoop]: Abstraction has 75844 states and 111330 transitions. [2022-11-19 08:30:52,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:30:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 75844 states and 111330 transitions. [2022-11-19 08:30:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-19 08:30:52,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:52,904 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2022-11-19 08:30:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:30:52,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:52,904 INFO L85 PathProgramCache]: Analyzing trace with hash -369345101, now seen corresponding path program 1 times [2022-11-19 08:30:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:52,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568701181] [2022-11-19 08:30:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:52,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3173 trivial. 0 not checked. [2022-11-19 08:30:53,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:53,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568701181] [2022-11-19 08:30:53,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568701181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:53,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:53,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:53,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112969348] [2022-11-19 08:30:53,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:53,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:53,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:53,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:53,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:53,755 INFO L87 Difference]: Start difference. First operand 75844 states and 111330 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:30:55,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:02,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:02,103 INFO L93 Difference]: Finished difference Result 101901 states and 149226 transitions. [2022-11-19 08:31:02,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:02,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 477 [2022-11-19 08:31:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:02,831 INFO L225 Difference]: With dead ends: 101901 [2022-11-19 08:31:02,831 INFO L226 Difference]: Without dead ends: 101897 [2022-11-19 08:31:02,867 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:31:02,868 INFO L413 NwaCegarLoop]: 5106 mSDtfsCounter, 2859 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2859 SdHoareTripleChecker+Valid, 7603 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:02,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2859 Valid, 7603 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 757 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-19 08:31:02,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101897 states. [2022-11-19 08:31:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101897 to 101449. [2022-11-19 08:31:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101449 states, 64060 states have (on average 1.3343428036216047) internal successors, (85478), 67189 states have internal predecessors, (85478), 31281 states have call successors, (31281), 6192 states have call predecessors, (31281), 6107 states have return successors, (31756), 30319 states have call predecessors, (31756), 31280 states have call successors, (31756) [2022-11-19 08:31:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101449 states to 101449 states and 148515 transitions. [2022-11-19 08:31:07,769 INFO L78 Accepts]: Start accepts. Automaton has 101449 states and 148515 transitions. Word has length 477 [2022-11-19 08:31:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:07,770 INFO L495 AbstractCegarLoop]: Abstraction has 101449 states and 148515 transitions. [2022-11-19 08:31:07,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:31:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 101449 states and 148515 transitions. [2022-11-19 08:31:07,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2022-11-19 08:31:07,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:07,801 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2022-11-19 08:31:07,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:31:07,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1325532510, now seen corresponding path program 1 times [2022-11-19 08:31:07,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:07,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923807559] [2022-11-19 08:31:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3173 trivial. 0 not checked. [2022-11-19 08:31:08,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:08,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923807559] [2022-11-19 08:31:08,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923807559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:08,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:08,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:08,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069570225] [2022-11-19 08:31:08,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:08,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:08,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:08,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:08,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:08,968 INFO L87 Difference]: Start difference. First operand 101449 states and 148515 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-19 08:31:11,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []