./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4d752ef50871b3af82701ffcd8ca92c2975f63f8274731e1afbb137d2562986 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:04:54,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:04:54,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:04:54,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:04:54,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:04:54,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:04:54,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:04:54,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:04:54,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:04:54,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:04:54,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:04:54,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:04:54,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:04:54,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:04:54,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:04:54,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:04:54,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:04:54,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:04:54,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:04:54,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:04:54,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:04:54,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:04:54,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:04:54,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:04:54,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:04:54,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:04:54,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:04:54,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:04:54,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:04:54,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:04:54,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:04:54,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:04:54,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:04:54,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:04:54,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:04:54,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:04:54,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:04:54,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:04:54,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:04:54,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:04:54,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:04:54,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:04:54,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:04:54,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:04:54,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:04:54,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:04:54,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:04:54,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:04:54,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:04:54,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:04:54,771 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:04:54,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:04:54,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:04:54,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:04:54,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:04:54,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:04:54,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:04:54,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:04:54,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:04:54,772 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:04:54,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:04:54,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:04:54,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:04:54,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:04:54,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:04:54,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:04:54,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:04:54,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:04:54,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:04:54,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:04:54,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:04:54,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:04:54,774 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:04:54,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:04:54,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:04:54,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:04:54,775 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_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4d752ef50871b3af82701ffcd8ca92c2975f63f8274731e1afbb137d2562986 [2021-12-06 17:04:54,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:04:54,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:04:54,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:04:54,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:04:54,980 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:04:54,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c [2021-12-06 17:04:55,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/data/48b26724f/bfe697da8c1741e1bb78eaaf460d5d08/FLAG6a690aa90 [2021-12-06 17:04:55,499 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:04:55,500 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c [2021-12-06 17:04:55,515 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/data/48b26724f/bfe697da8c1741e1bb78eaaf460d5d08/FLAG6a690aa90 [2021-12-06 17:04:55,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/data/48b26724f/bfe697da8c1741e1bb78eaaf460d5d08 [2021-12-06 17:04:55,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:04:55,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:04:55,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:04:55,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:04:55,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:04:55,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:04:55" (1/1) ... [2021-12-06 17:04:55,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c63025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:55, skipping insertion in model container [2021-12-06 17:04:55,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:04:55" (1/1) ... [2021-12-06 17:04:55,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:04:55,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:04:55,762 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c[17414,17427] [2021-12-06 17:04:55,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:04:55,910 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:04:55,932 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c[17414,17427] [2021-12-06 17:04:55,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:04:56,005 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:04:56,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56 WrapperNode [2021-12-06 17:04:56,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:04:56,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:04:56,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:04:56,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:04:56,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,065 INFO L137 Inliner]: procedures = 90, calls = 332, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 802 [2021-12-06 17:04:56,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:04:56,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:04:56,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:04:56,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:04:56,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:04:56,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:04:56,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:04:56,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:04:56,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (1/1) ... [2021-12-06 17:04:56,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:04:56,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:56,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:04:56,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:04:56,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:04:56,180 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-06 17:04:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-06 17:04:56,180 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-06 17:04:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-06 17:04:56,180 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-06 17:04:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-06 17:04:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-06 17:04:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-06 17:04:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-06 17:04:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-06 17:04:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 17:04:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 17:04:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 17:04:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 17:04:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-06 17:04:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-06 17:04:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-06 17:04:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-06 17:04:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-06 17:04:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-06 17:04:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-06 17:04:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-06 17:04:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-06 17:04:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-06 17:04:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-06 17:04:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-06 17:04:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-06 17:04:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-06 17:04:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-06 17:04:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-06 17:04:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-06 17:04:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-06 17:04:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-06 17:04:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-06 17:04:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:04:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-06 17:04:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-06 17:04:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-06 17:04:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-06 17:04:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-06 17:04:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-06 17:04:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:04:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:04:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-06 17:04:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-06 17:04:56,276 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:04:56,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:04:56,864 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:04:56,874 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:04:56,874 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:04:56,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:04:56 BoogieIcfgContainer [2021-12-06 17:04:56,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:04:56,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:04:56,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:04:56,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:04:56,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:04:55" (1/3) ... [2021-12-06 17:04:56,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b424fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:04:56, skipping insertion in model container [2021-12-06 17:04:56,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:04:56" (2/3) ... [2021-12-06 17:04:56,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b424fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:04:56, skipping insertion in model container [2021-12-06 17:04:56,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:04:56" (3/3) ... [2021-12-06 17:04:56,883 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product17.cil.c [2021-12-06 17:04:56,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:04:56,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:04:56,925 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:04:56,930 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:04:56,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:04:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 421 states have (on average 1.7102137767220902) internal successors, (720), 442 states have internal predecessors, (720), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) [2021-12-06 17:04:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 17:04:56,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:56,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:56,976 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:56,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:56,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1249329355, now seen corresponding path program 1 times [2021-12-06 17:04:56,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:56,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490136916] [2021-12-06 17:04:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:56,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:04:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:04:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:04:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:57,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:04:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:04:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:57,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:04:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:57,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:04:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:57,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:04:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:04:57,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:57,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490136916] [2021-12-06 17:04:57,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490136916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:57,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:57,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:04:57,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141572762] [2021-12-06 17:04:57,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:57,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:04:57,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:04:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:04:57,597 INFO L87 Difference]: Start difference. First operand has 532 states, 421 states have (on average 1.7102137767220902) internal successors, (720), 442 states have internal predecessors, (720), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:05:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:02,905 INFO L93 Difference]: Finished difference Result 1504 states and 2610 transitions. [2021-12-06 17:05:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:05:02,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2021-12-06 17:05:02,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:02,931 INFO L225 Difference]: With dead ends: 1504 [2021-12-06 17:05:02,932 INFO L226 Difference]: Without dead ends: 984 [2021-12-06 17:05:02,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:05:02,945 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 1768 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 4372 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 5185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 4372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:02,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 3419 Invalid, 5185 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [813 Valid, 4372 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-06 17:05:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-12-06 17:05:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 526. [2021-12-06 17:05:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 417 states have (on average 1.7026378896882495) internal successors, (710), 436 states have internal predecessors, (710), 88 states have call successors, (88), 21 states have call predecessors, (88), 20 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2021-12-06 17:05:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 881 transitions. [2021-12-06 17:05:03,112 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 881 transitions. Word has length 74 [2021-12-06 17:05:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:03,112 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 881 transitions. [2021-12-06 17:05:03,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:05:03,113 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 881 transitions. [2021-12-06 17:05:03,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 17:05:03,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:03,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:05:03,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:05:03,123 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash 498321993, now seen corresponding path program 1 times [2021-12-06 17:05:03,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:03,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994594635] [2021-12-06 17:05:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:03,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:03,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:03,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:05:03,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:03,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994594635] [2021-12-06 17:05:03,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994594635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:03,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:03,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:05:03,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639811190] [2021-12-06 17:05:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:03,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:05:03,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:05:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:05:03,473 INFO L87 Difference]: Start difference. First operand 526 states and 881 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:05:07,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:07,918 INFO L93 Difference]: Finished difference Result 1329 states and 2262 transitions. [2021-12-06 17:05:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:05:07,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2021-12-06 17:05:07,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:07,925 INFO L225 Difference]: With dead ends: 1329 [2021-12-06 17:05:07,925 INFO L226 Difference]: Without dead ends: 821 [2021-12-06 17:05:07,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:05:07,928 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 986 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 4777 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 5080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 4777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:07,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 4179 Invalid, 5080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [303 Valid, 4777 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 17:05:07,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-12-06 17:05:07,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 530. [2021-12-06 17:05:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 420 states have (on average 1.6952380952380952) internal successors, (712), 439 states have internal predecessors, (712), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (85), 82 states have call predecessors, (85), 83 states have call successors, (85) [2021-12-06 17:05:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 885 transitions. [2021-12-06 17:05:07,995 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 885 transitions. Word has length 80 [2021-12-06 17:05:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:07,995 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 885 transitions. [2021-12-06 17:05:07,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:05:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 885 transitions. [2021-12-06 17:05:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 17:05:07,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:07,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:05:07,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:05:07,999 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1135044575, now seen corresponding path program 1 times [2021-12-06 17:05:07,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:07,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120481914] [2021-12-06 17:05:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:08,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:08,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:05:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:05:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:08,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:08,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:05:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:05:08,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:08,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120481914] [2021-12-06 17:05:08,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120481914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:08,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:08,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:05:08,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181745051] [2021-12-06 17:05:08,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:08,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:05:08,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:08,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:05:08,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:05:08,293 INFO L87 Difference]: Start difference. First operand 530 states and 885 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:05:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:17,669 INFO L93 Difference]: Finished difference Result 2470 states and 4345 transitions. [2021-12-06 17:05:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:05:17,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2021-12-06 17:05:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:17,683 INFO L225 Difference]: With dead ends: 2470 [2021-12-06 17:05:17,683 INFO L226 Difference]: Without dead ends: 1958 [2021-12-06 17:05:17,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2021-12-06 17:05:17,690 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 4267 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 7427 mSolverCounterSat, 1786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4345 SdHoareTripleChecker+Valid, 4624 SdHoareTripleChecker+Invalid, 9213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1786 IncrementalHoareTripleChecker+Valid, 7427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:17,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4345 Valid, 4624 Invalid, 9213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1786 Valid, 7427 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-12-06 17:05:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2021-12-06 17:05:17,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1395. [2021-12-06 17:05:17,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1094 states have (on average 1.653564899451554) internal successors, (1809), 1141 states have internal predecessors, (1809), 241 states have call successors, (241), 56 states have call predecessors, (241), 59 states have return successors, (275), 233 states have call predecessors, (275), 236 states have call successors, (275) [2021-12-06 17:05:17,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2325 transitions. [2021-12-06 17:05:17,859 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2325 transitions. Word has length 85 [2021-12-06 17:05:17,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:17,859 INFO L470 AbstractCegarLoop]: Abstraction has 1395 states and 2325 transitions. [2021-12-06 17:05:17,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:05:17,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2325 transitions. [2021-12-06 17:05:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 17:05:17,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:17,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:05:17,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:05:17,864 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:17,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash 150471569, now seen corresponding path program 1 times [2021-12-06 17:05:17,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:17,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808729780] [2021-12-06 17:05:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:17,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:05:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:05:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:05:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:05:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:05:18,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:18,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808729780] [2021-12-06 17:05:18,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808729780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:18,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:18,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:05:18,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751819608] [2021-12-06 17:05:18,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:18,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:05:18,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:05:18,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:05:18,184 INFO L87 Difference]: Start difference. First operand 1395 states and 2325 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:05:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:22,388 INFO L93 Difference]: Finished difference Result 3439 states and 5902 transitions. [2021-12-06 17:05:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:05:22,389 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2021-12-06 17:05:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:22,400 INFO L225 Difference]: With dead ends: 3439 [2021-12-06 17:05:22,400 INFO L226 Difference]: Without dead ends: 1921 [2021-12-06 17:05:22,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:05:22,409 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 2783 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2844 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 4906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:22,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2844 Valid, 3742 Invalid, 4906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 4229 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 17:05:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2021-12-06 17:05:22,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1395. [2021-12-06 17:05:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1094 states have (on average 1.6371115173674589) internal successors, (1791), 1141 states have internal predecessors, (1791), 241 states have call successors, (241), 56 states have call predecessors, (241), 59 states have return successors, (275), 233 states have call predecessors, (275), 236 states have call successors, (275) [2021-12-06 17:05:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2307 transitions. [2021-12-06 17:05:22,580 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2307 transitions. Word has length 94 [2021-12-06 17:05:22,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:22,580 INFO L470 AbstractCegarLoop]: Abstraction has 1395 states and 2307 transitions. [2021-12-06 17:05:22,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:05:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2307 transitions. [2021-12-06 17:05:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 17:05:22,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:22,585 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:22,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:05:22,585 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash 202169523, now seen corresponding path program 1 times [2021-12-06 17:05:22,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268157445] [2021-12-06 17:05:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:22,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:05:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:05:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:05:22,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:22,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268157445] [2021-12-06 17:05:22,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268157445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:22,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:22,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:05:22,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733644673] [2021-12-06 17:05:22,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:22,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:05:22,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:05:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:05:22,865 INFO L87 Difference]: Start difference. First operand 1395 states and 2307 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:26,311 INFO L93 Difference]: Finished difference Result 3298 states and 5574 transitions. [2021-12-06 17:05:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:05:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2021-12-06 17:05:26,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:26,323 INFO L225 Difference]: With dead ends: 3298 [2021-12-06 17:05:26,323 INFO L226 Difference]: Without dead ends: 1921 [2021-12-06 17:05:26,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:05:26,329 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 1327 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:26,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1399 Valid, 2299 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 17:05:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2021-12-06 17:05:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1395. [2021-12-06 17:05:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1094 states have (on average 1.636197440585009) internal successors, (1790), 1141 states have internal predecessors, (1790), 241 states have call successors, (241), 56 states have call predecessors, (241), 59 states have return successors, (275), 233 states have call predecessors, (275), 236 states have call successors, (275) [2021-12-06 17:05:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2306 transitions. [2021-12-06 17:05:26,496 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2306 transitions. Word has length 97 [2021-12-06 17:05:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:26,497 INFO L470 AbstractCegarLoop]: Abstraction has 1395 states and 2306 transitions. [2021-12-06 17:05:26,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:26,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2306 transitions. [2021-12-06 17:05:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 17:05:26,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:26,500 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:26,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:05:26,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash -582363142, now seen corresponding path program 1 times [2021-12-06 17:05:26,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:26,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337749780] [2021-12-06 17:05:26,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:26,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:05:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:05:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 17:05:26,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:26,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337749780] [2021-12-06 17:05:26,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337749780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:26,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:26,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 17:05:26,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570913007] [2021-12-06 17:05:26,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:26,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:05:26,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:26,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:05:26,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:05:26,829 INFO L87 Difference]: Start difference. First operand 1395 states and 2306 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:05:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:31,551 INFO L93 Difference]: Finished difference Result 3380 states and 5808 transitions. [2021-12-06 17:05:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:05:31,552 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2021-12-06 17:05:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:31,565 INFO L225 Difference]: With dead ends: 3380 [2021-12-06 17:05:31,565 INFO L226 Difference]: Without dead ends: 2043 [2021-12-06 17:05:31,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:05:31,571 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 1615 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 5792 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 5183 SdHoareTripleChecker+Invalid, 6344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 5792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:31,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1680 Valid, 5183 Invalid, 6344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [552 Valid, 5792 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 17:05:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2021-12-06 17:05:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1415. [2021-12-06 17:05:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1104 states have (on average 1.6259057971014492) internal successors, (1795), 1158 states have internal predecessors, (1795), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:05:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2346 transitions. [2021-12-06 17:05:31,756 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2346 transitions. Word has length 98 [2021-12-06 17:05:31,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:31,756 INFO L470 AbstractCegarLoop]: Abstraction has 1415 states and 2346 transitions. [2021-12-06 17:05:31,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:05:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2346 transitions. [2021-12-06 17:05:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 17:05:31,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:31,759 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:31,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:05:31,759 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:31,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1237331055, now seen corresponding path program 1 times [2021-12-06 17:05:31,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:31,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443506119] [2021-12-06 17:05:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:31,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:05:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:05:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:05:32,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:32,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443506119] [2021-12-06 17:05:32,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443506119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:32,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:32,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:05:32,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387967287] [2021-12-06 17:05:32,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:32,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:05:32,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:32,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:05:32,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:05:32,002 INFO L87 Difference]: Start difference. First operand 1415 states and 2346 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:35,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:35,645 INFO L93 Difference]: Finished difference Result 3304 states and 5621 transitions. [2021-12-06 17:05:35,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:05:35,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2021-12-06 17:05:35,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:35,658 INFO L225 Difference]: With dead ends: 3304 [2021-12-06 17:05:35,658 INFO L226 Difference]: Without dead ends: 1947 [2021-12-06 17:05:35,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:05:35,663 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 964 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:35,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 2313 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 17:05:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2021-12-06 17:05:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1415. [2021-12-06 17:05:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1104 states have (on average 1.6213768115942029) internal successors, (1790), 1158 states have internal predecessors, (1790), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:05:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2341 transitions. [2021-12-06 17:05:35,845 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2341 transitions. Word has length 99 [2021-12-06 17:05:35,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:35,845 INFO L470 AbstractCegarLoop]: Abstraction has 1415 states and 2341 transitions. [2021-12-06 17:05:35,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2341 transitions. [2021-12-06 17:05:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 17:05:35,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:35,848 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:35,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:05:35,849 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:35,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:35,849 INFO L85 PathProgramCache]: Analyzing trace with hash 689977238, now seen corresponding path program 1 times [2021-12-06 17:05:35,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464216895] [2021-12-06 17:05:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:35,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:05:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:05:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:36,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:36,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:36,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:05:36,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:36,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464216895] [2021-12-06 17:05:36,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464216895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:36,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:36,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:05:36,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461716393] [2021-12-06 17:05:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:36,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:05:36,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:36,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:05:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:05:36,105 INFO L87 Difference]: Start difference. First operand 1415 states and 2341 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:39,468 INFO L93 Difference]: Finished difference Result 3304 states and 5616 transitions. [2021-12-06 17:05:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:05:39,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2021-12-06 17:05:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:39,479 INFO L225 Difference]: With dead ends: 3304 [2021-12-06 17:05:39,479 INFO L226 Difference]: Without dead ends: 1947 [2021-12-06 17:05:39,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:05:39,484 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 1357 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:39,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 2283 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 17:05:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2021-12-06 17:05:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1415. [2021-12-06 17:05:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1104 states have (on average 1.6168478260869565) internal successors, (1785), 1158 states have internal predecessors, (1785), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:05:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2336 transitions. [2021-12-06 17:05:39,664 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2336 transitions. Word has length 100 [2021-12-06 17:05:39,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:39,664 INFO L470 AbstractCegarLoop]: Abstraction has 1415 states and 2336 transitions. [2021-12-06 17:05:39,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2336 transitions. [2021-12-06 17:05:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 17:05:39,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:39,667 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:39,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:05:39,667 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:39,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:39,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1769918004, now seen corresponding path program 1 times [2021-12-06 17:05:39,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:39,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536325198] [2021-12-06 17:05:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:39,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:05:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 17:05:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:05:39,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:39,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536325198] [2021-12-06 17:05:39,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536325198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:39,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:39,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:05:39,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236870176] [2021-12-06 17:05:39,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:39,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:05:39,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:05:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:05:39,912 INFO L87 Difference]: Start difference. First operand 1415 states and 2336 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:43,103 INFO L93 Difference]: Finished difference Result 3304 states and 5611 transitions. [2021-12-06 17:05:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:05:43,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2021-12-06 17:05:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:43,114 INFO L225 Difference]: With dead ends: 3304 [2021-12-06 17:05:43,114 INFO L226 Difference]: Without dead ends: 1947 [2021-12-06 17:05:43,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:05:43,120 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 1783 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:43,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 2218 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:05:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2021-12-06 17:05:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1415. [2021-12-06 17:05:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1104 states have (on average 1.6123188405797102) internal successors, (1780), 1158 states have internal predecessors, (1780), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:05:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2331 transitions. [2021-12-06 17:05:43,307 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2331 transitions. Word has length 101 [2021-12-06 17:05:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:43,307 INFO L470 AbstractCegarLoop]: Abstraction has 1415 states and 2331 transitions. [2021-12-06 17:05:43,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2331 transitions. [2021-12-06 17:05:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 17:05:43,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:43,310 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:43,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:05:43,310 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1707733771, now seen corresponding path program 1 times [2021-12-06 17:05:43,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:43,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085004671] [2021-12-06 17:05:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:43,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:05:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 17:05:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:05:43,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:43,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085004671] [2021-12-06 17:05:43,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085004671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:43,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:43,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:05:43,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694181593] [2021-12-06 17:05:43,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:43,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:05:43,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:43,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:05:43,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:05:43,567 INFO L87 Difference]: Start difference. First operand 1415 states and 2331 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:05:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:47,538 INFO L93 Difference]: Finished difference Result 3327 states and 5640 transitions. [2021-12-06 17:05:47,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:05:47,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2021-12-06 17:05:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:47,550 INFO L225 Difference]: With dead ends: 3327 [2021-12-06 17:05:47,551 INFO L226 Difference]: Without dead ends: 1976 [2021-12-06 17:05:47,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:05:47,557 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 1785 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 4197 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 4756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 4197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:47,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 3768 Invalid, 4756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 4197 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 17:05:47,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-12-06 17:05:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1417. [2021-12-06 17:05:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1106 states have (on average 1.6112115732368897) internal successors, (1782), 1160 states have internal predecessors, (1782), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:05:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2333 transitions. [2021-12-06 17:05:47,743 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2333 transitions. Word has length 101 [2021-12-06 17:05:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:47,743 INFO L470 AbstractCegarLoop]: Abstraction has 1417 states and 2333 transitions. [2021-12-06 17:05:47,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:05:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2333 transitions. [2021-12-06 17:05:47,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 17:05:47,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:47,746 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:47,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 17:05:47,746 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:47,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:47,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1500797937, now seen corresponding path program 1 times [2021-12-06 17:05:47,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:47,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843853792] [2021-12-06 17:05:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:47,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:05:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:05:47,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:47,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843853792] [2021-12-06 17:05:47,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843853792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:47,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:47,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:05:47,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702691533] [2021-12-06 17:05:47,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:47,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:05:47,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:47,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:05:47,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:05:47,972 INFO L87 Difference]: Start difference. First operand 1417 states and 2333 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:51,022 INFO L93 Difference]: Finished difference Result 3310 states and 5612 transitions. [2021-12-06 17:05:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:05:51,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2021-12-06 17:05:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:51,033 INFO L225 Difference]: With dead ends: 3310 [2021-12-06 17:05:51,034 INFO L226 Difference]: Without dead ends: 1951 [2021-12-06 17:05:51,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:05:51,039 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 1780 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:51,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 2213 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 17:05:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2021-12-06 17:05:51,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1417. [2021-12-06 17:05:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1106 states have (on average 1.6066907775768535) internal successors, (1777), 1160 states have internal predecessors, (1777), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:05:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2328 transitions. [2021-12-06 17:05:51,228 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2328 transitions. Word has length 102 [2021-12-06 17:05:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:51,228 INFO L470 AbstractCegarLoop]: Abstraction has 1417 states and 2328 transitions. [2021-12-06 17:05:51,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2328 transitions. [2021-12-06 17:05:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 17:05:51,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:51,231 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:51,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:05:51,231 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:51,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:51,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1754249388, now seen corresponding path program 1 times [2021-12-06 17:05:51,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:51,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210413583] [2021-12-06 17:05:51,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:51,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:05:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:05:51,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:51,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210413583] [2021-12-06 17:05:51,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210413583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:51,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:51,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:05:51,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551826888] [2021-12-06 17:05:51,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:51,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:05:51,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:51,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:05:51,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:05:51,445 INFO L87 Difference]: Start difference. First operand 1417 states and 2328 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:05:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:55,818 INFO L93 Difference]: Finished difference Result 3331 states and 5637 transitions. [2021-12-06 17:05:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:05:55,818 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2021-12-06 17:05:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:55,829 INFO L225 Difference]: With dead ends: 3331 [2021-12-06 17:05:55,829 INFO L226 Difference]: Without dead ends: 1980 [2021-12-06 17:05:55,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:05:55,834 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 975 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 4411 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3897 SdHoareTripleChecker+Invalid, 4689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 4411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:55,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 3897 Invalid, 4689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 4411 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 17:05:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2021-12-06 17:05:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1420. [2021-12-06 17:05:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1109 states have (on average 1.6050495942290353) internal successors, (1780), 1163 states have internal predecessors, (1780), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:05:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2331 transitions. [2021-12-06 17:05:56,032 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2331 transitions. Word has length 102 [2021-12-06 17:05:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:56,033 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 2331 transitions. [2021-12-06 17:05:56,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:05:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2331 transitions. [2021-12-06 17:05:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 17:05:56,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:56,035 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:56,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:05:56,035 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:56,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2031834119, now seen corresponding path program 1 times [2021-12-06 17:05:56,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:56,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232967252] [2021-12-06 17:05:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:56,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:05:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:05:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:05:56,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:56,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232967252] [2021-12-06 17:05:56,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232967252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:56,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:56,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:05:56,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057040383] [2021-12-06 17:05:56,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:56,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:05:56,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:05:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:05:56,278 INFO L87 Difference]: Start difference. First operand 1420 states and 2331 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:59,513 INFO L93 Difference]: Finished difference Result 3359 states and 5666 transitions. [2021-12-06 17:05:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:05:59,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2021-12-06 17:05:59,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:59,524 INFO L225 Difference]: With dead ends: 3359 [2021-12-06 17:05:59,524 INFO L226 Difference]: Without dead ends: 1957 [2021-12-06 17:05:59,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:05:59,529 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 1296 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:59,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1368 Valid, 2291 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:05:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2021-12-06 17:05:59,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1420. [2021-12-06 17:05:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1109 states have (on average 1.6041478809738503) internal successors, (1779), 1163 states have internal predecessors, (1779), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:05:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2330 transitions. [2021-12-06 17:05:59,712 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2330 transitions. Word has length 103 [2021-12-06 17:05:59,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:59,712 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 2330 transitions. [2021-12-06 17:05:59,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:05:59,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2330 transitions. [2021-12-06 17:05:59,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 17:05:59,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:59,714 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:05:59,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:05:59,714 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:59,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:59,714 INFO L85 PathProgramCache]: Analyzing trace with hash 863637864, now seen corresponding path program 1 times [2021-12-06 17:05:59,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:59,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341468413] [2021-12-06 17:05:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:59,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:05:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:05:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:05:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:05:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:05:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:05:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:05:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:05:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:05:59,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:59,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341468413] [2021-12-06 17:05:59,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341468413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:05:59,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:05:59,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 17:05:59,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968414018] [2021-12-06 17:05:59,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:05:59,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:05:59,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:05:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:05:59,948 INFO L87 Difference]: Start difference. First operand 1420 states and 2330 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:06:04,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:04,564 INFO L93 Difference]: Finished difference Result 3319 states and 5616 transitions. [2021-12-06 17:06:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:06:04,565 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2021-12-06 17:06:04,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:04,573 INFO L225 Difference]: With dead ends: 3319 [2021-12-06 17:06:04,573 INFO L226 Difference]: Without dead ends: 1947 [2021-12-06 17:06:04,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:06:04,587 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 1010 mSDsluCounter, 3940 mSDsCounter, 0 mSdLazyCounter, 5862 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 4847 SdHoareTripleChecker+Invalid, 6130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 5862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:04,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 4847 Invalid, 6130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [268 Valid, 5862 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-06 17:06:04,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2021-12-06 17:06:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1412. [2021-12-06 17:06:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1101 states have (on average 1.6058128973660308) internal successors, (1768), 1155 states have internal predecessors, (1768), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:06:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2319 transitions. [2021-12-06 17:06:04,789 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2319 transitions. Word has length 103 [2021-12-06 17:06:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:04,789 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 2319 transitions. [2021-12-06 17:06:04,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:06:04,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2319 transitions. [2021-12-06 17:06:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 17:06:04,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:04,791 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:06:04,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:06:04,791 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:04,792 INFO L85 PathProgramCache]: Analyzing trace with hash -530005529, now seen corresponding path program 1 times [2021-12-06 17:06:04,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:04,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425766699] [2021-12-06 17:06:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:04,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:06:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:06:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:06:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:06:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:06:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:06:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:06:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:06:04,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:04,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425766699] [2021-12-06 17:06:04,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425766699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:06:04,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:06:04,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:06:04,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576239834] [2021-12-06 17:06:04,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:06:04,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:06:04,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:04,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:06:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:06:04,998 INFO L87 Difference]: Start difference. First operand 1412 states and 2319 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:06:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:08,788 INFO L93 Difference]: Finished difference Result 3319 states and 5612 transitions. [2021-12-06 17:06:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:06:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2021-12-06 17:06:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:08,797 INFO L225 Difference]: With dead ends: 3319 [2021-12-06 17:06:08,797 INFO L226 Difference]: Without dead ends: 1968 [2021-12-06 17:06:08,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:06:08,800 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 948 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:08,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 2326 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 17:06:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-12-06 17:06:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1416. [2021-12-06 17:06:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1105 states have (on average 1.6036199095022625) internal successors, (1772), 1159 states have internal predecessors, (1772), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:06:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2323 transitions. [2021-12-06 17:06:08,999 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2323 transitions. Word has length 103 [2021-12-06 17:06:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:09,000 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 2323 transitions. [2021-12-06 17:06:09,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:06:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2323 transitions. [2021-12-06 17:06:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 17:06:09,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:09,002 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:06:09,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 17:06:09,002 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:09,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:09,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2020186962, now seen corresponding path program 1 times [2021-12-06 17:06:09,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:09,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656507970] [2021-12-06 17:06:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:09,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:06:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:06:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:06:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:06:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:06:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:06:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:06:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:06:09,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:09,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656507970] [2021-12-06 17:06:09,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656507970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:06:09,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:06:09,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:06:09,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5919482] [2021-12-06 17:06:09,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:06:09,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:06:09,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:06:09,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:06:09,202 INFO L87 Difference]: Start difference. First operand 1416 states and 2323 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:06:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:13,000 INFO L93 Difference]: Finished difference Result 3327 states and 5618 transitions. [2021-12-06 17:06:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:06:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2021-12-06 17:06:13,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:13,008 INFO L225 Difference]: With dead ends: 3327 [2021-12-06 17:06:13,008 INFO L226 Difference]: Without dead ends: 1976 [2021-12-06 17:06:13,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:06:13,012 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 942 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:13,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 2333 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 17:06:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-12-06 17:06:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1421. [2021-12-06 17:06:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1110 states have (on average 1.600900900900901) internal successors, (1777), 1164 states have internal predecessors, (1777), 244 states have call successors, (244), 56 states have call predecessors, (244), 66 states have return successors, (307), 236 states have call predecessors, (307), 239 states have call successors, (307) [2021-12-06 17:06:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2328 transitions. [2021-12-06 17:06:13,216 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2328 transitions. Word has length 104 [2021-12-06 17:06:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:13,216 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 2328 transitions. [2021-12-06 17:06:13,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 17:06:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2328 transitions. [2021-12-06 17:06:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 17:06:13,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:13,218 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:06:13,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 17:06:13,218 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:13,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1255357678, now seen corresponding path program 1 times [2021-12-06 17:06:13,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:13,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267372477] [2021-12-06 17:06:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:13,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:06:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:06:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:06:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:06:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:06:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:06:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:06:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:06:13,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:13,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267372477] [2021-12-06 17:06:13,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267372477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:06:13,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:06:13,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 17:06:13,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420097239] [2021-12-06 17:06:13,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:06:13,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:06:13,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:06:13,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:06:13,554 INFO L87 Difference]: Start difference. First operand 1421 states and 2328 transitions. Second operand has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 12 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 17:06:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:37,037 INFO L93 Difference]: Finished difference Result 6672 states and 11743 transitions. [2021-12-06 17:06:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-12-06 17:06:37,037 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 12 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) Word has length 105 [2021-12-06 17:06:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:37,058 INFO L225 Difference]: With dead ends: 6672 [2021-12-06 17:06:37,058 INFO L226 Difference]: Without dead ends: 5325 [2021-12-06 17:06:37,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1333, Invalid=7409, Unknown=0, NotChecked=0, Total=8742 [2021-12-06 17:06:37,066 INFO L933 BasicCegarLoop]: 1553 mSDtfsCounter, 9986 mSDsluCounter, 7287 mSDsCounter, 0 mSdLazyCounter, 21020 mSolverCounterSat, 5155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10061 SdHoareTripleChecker+Valid, 8840 SdHoareTripleChecker+Invalid, 26175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5155 IncrementalHoareTripleChecker+Valid, 21020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:37,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10061 Valid, 8840 Invalid, 26175 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5155 Valid, 21020 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2021-12-06 17:06:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5325 states. [2021-12-06 17:06:37,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5325 to 3116. [2021-12-06 17:06:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 2434 states have (on average 1.576417419884963) internal successors, (3837), 2552 states have internal predecessors, (3837), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2021-12-06 17:06:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 5060 transitions. [2021-12-06 17:06:37,579 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 5060 transitions. Word has length 105 [2021-12-06 17:06:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:37,579 INFO L470 AbstractCegarLoop]: Abstraction has 3116 states and 5060 transitions. [2021-12-06 17:06:37,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 12 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 17:06:37,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 5060 transitions. [2021-12-06 17:06:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 17:06:37,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:37,581 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:06:37,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 17:06:37,582 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:37,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:37,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1449647346, now seen corresponding path program 1 times [2021-12-06 17:06:37,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:37,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752472418] [2021-12-06 17:06:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:37,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:06:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:06:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:06:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:06:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:06:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:06:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:06:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 17:06:37,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:37,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752472418] [2021-12-06 17:06:37,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752472418] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:06:37,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770150511] [2021-12-06 17:06:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:37,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:06:37,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:06:37,829 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:06:37,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:06:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:37,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:06:37,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:06:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:06:38,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:06:38,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770150511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:06:38,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:06:38,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2021-12-06 17:06:38,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481155641] [2021-12-06 17:06:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:06:38,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:06:38,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:06:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:06:38,175 INFO L87 Difference]: Start difference. First operand 3116 states and 5060 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 17:06:38,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:38,845 INFO L93 Difference]: Finished difference Result 3232 states and 5247 transitions. [2021-12-06 17:06:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:06:38,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 106 [2021-12-06 17:06:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:38,858 INFO L225 Difference]: With dead ends: 3232 [2021-12-06 17:06:38,858 INFO L226 Difference]: Without dead ends: 3217 [2021-12-06 17:06:38,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:06:38,860 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 853 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:38,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 1480 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:06:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-12-06 17:06:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 3125. [2021-12-06 17:06:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2443 states have (on average 1.5742939009414654) internal successors, (3846), 2561 states have internal predecessors, (3846), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2021-12-06 17:06:39,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 5069 transitions. [2021-12-06 17:06:39,338 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 5069 transitions. Word has length 106 [2021-12-06 17:06:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:39,338 INFO L470 AbstractCegarLoop]: Abstraction has 3125 states and 5069 transitions. [2021-12-06 17:06:39,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 17:06:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 5069 transitions. [2021-12-06 17:06:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:06:39,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:39,340 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:06:39,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:06:39,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:06:39,542 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1690886665, now seen corresponding path program 1 times [2021-12-06 17:06:39,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:39,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169951165] [2021-12-06 17:06:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:39,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:06:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:06:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:06:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:06:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:06:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:06:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:06:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:06:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:06:39,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:39,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169951165] [2021-12-06 17:06:39,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169951165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:06:39,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:06:39,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:06:39,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827080049] [2021-12-06 17:06:39,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:06:39,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:06:39,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:06:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:06:39,807 INFO L87 Difference]: Start difference. First operand 3125 states and 5069 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 17:06:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:47,230 INFO L93 Difference]: Finished difference Result 4245 states and 7195 transitions. [2021-12-06 17:06:47,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 17:06:47,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2021-12-06 17:06:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:47,245 INFO L225 Difference]: With dead ends: 4245 [2021-12-06 17:06:47,246 INFO L226 Difference]: Without dead ends: 4230 [2021-12-06 17:06:47,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2021-12-06 17:06:47,248 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 3236 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 4579 mSolverCounterSat, 1163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3303 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 5742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1163 IncrementalHoareTripleChecker+Valid, 4579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:47,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3303 Valid, 3093 Invalid, 5742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1163 Valid, 4579 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-06 17:06:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2021-12-06 17:06:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 3125. [2021-12-06 17:06:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2443 states have (on average 1.5714285714285714) internal successors, (3839), 2561 states have internal predecessors, (3839), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2021-12-06 17:06:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 5062 transitions. [2021-12-06 17:06:47,753 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 5062 transitions. Word has length 112 [2021-12-06 17:06:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:47,753 INFO L470 AbstractCegarLoop]: Abstraction has 3125 states and 5062 transitions. [2021-12-06 17:06:47,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 17:06:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 5062 transitions. [2021-12-06 17:06:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 17:06:47,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:47,756 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:06:47,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 17:06:47,756 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2057524241, now seen corresponding path program 1 times [2021-12-06 17:06:47,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:47,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425511190] [2021-12-06 17:06:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:47,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:47,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:06:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:47,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:06:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:06:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:48,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:06:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:48,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:06:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:06:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:06:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:48,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:06:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:06:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 17:06:48,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:48,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425511190] [2021-12-06 17:06:48,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425511190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:06:48,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:06:48,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 17:06:48,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320869931] [2021-12-06 17:06:48,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:06:48,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:06:48,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:06:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:06:48,060 INFO L87 Difference]: Start difference. First operand 3125 states and 5062 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 17:06:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:59,055 INFO L93 Difference]: Finished difference Result 8095 states and 13728 transitions. [2021-12-06 17:06:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 17:06:59,055 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 123 [2021-12-06 17:06:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:59,075 INFO L225 Difference]: With dead ends: 8095 [2021-12-06 17:06:59,075 INFO L226 Difference]: Without dead ends: 5056 [2021-12-06 17:06:59,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 17:06:59,084 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 6801 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 8107 mSolverCounterSat, 3369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6802 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 11476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3369 IncrementalHoareTripleChecker+Valid, 8107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:59,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6802 Valid, 2950 Invalid, 11476 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3369 Valid, 8107 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-12-06 17:06:59,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2021-12-06 17:06:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 3141. [2021-12-06 17:06:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 2455 states have (on average 1.564969450101833) internal successors, (3842), 2573 states have internal predecessors, (3842), 524 states have call successors, (524), 124 states have call predecessors, (524), 161 states have return successors, (740), 515 states have call predecessors, (740), 519 states have call successors, (740) [2021-12-06 17:06:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 5106 transitions. [2021-12-06 17:06:59,633 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 5106 transitions. Word has length 123 [2021-12-06 17:06:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:59,633 INFO L470 AbstractCegarLoop]: Abstraction has 3141 states and 5106 transitions. [2021-12-06 17:06:59,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 17:06:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 5106 transitions. [2021-12-06 17:06:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 17:06:59,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:59,636 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:06:59,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 17:06:59,636 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:59,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1179129061, now seen corresponding path program 1 times [2021-12-06 17:06:59,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:59,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114074327] [2021-12-06 17:06:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:59,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:06:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:06:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:06:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:06:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:06:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:06:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:06:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:06:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:06:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:06:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 17:06:59,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:59,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114074327] [2021-12-06 17:06:59,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114074327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:06:59,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:06:59,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:06:59,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872828772] [2021-12-06 17:06:59,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:06:59,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:06:59,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:59,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:06:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:06:59,856 INFO L87 Difference]: Start difference. First operand 3141 states and 5106 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 17:07:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:07:23,437 INFO L93 Difference]: Finished difference Result 15676 states and 28071 transitions. [2021-12-06 17:07:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 17:07:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2021-12-06 17:07:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:07:23,501 INFO L225 Difference]: With dead ends: 15676 [2021-12-06 17:07:23,501 INFO L226 Difference]: Without dead ends: 12621 [2021-12-06 17:07:23,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=539, Invalid=1813, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 17:07:23,518 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 7843 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 10131 mSolverCounterSat, 4973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7910 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 15104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4973 IncrementalHoareTripleChecker+Valid, 10131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:07:23,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7910 Valid, 3528 Invalid, 15104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4973 Valid, 10131 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2021-12-06 17:07:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12621 states. [2021-12-06 17:07:25,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12621 to 8202. [2021-12-06 17:07:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8202 states, 6105 states have (on average 1.549058149058149) internal successors, (9457), 6524 states have internal predecessors, (9457), 1747 states have call successors, (1747), 242 states have call predecessors, (1747), 349 states have return successors, (2690), 1723 states have call predecessors, (2690), 1742 states have call successors, (2690) [2021-12-06 17:07:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 13894 transitions. [2021-12-06 17:07:25,334 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 13894 transitions. Word has length 124 [2021-12-06 17:07:25,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:07:25,334 INFO L470 AbstractCegarLoop]: Abstraction has 8202 states and 13894 transitions. [2021-12-06 17:07:25,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 17:07:25,334 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 13894 transitions. [2021-12-06 17:07:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 17:07:25,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:07:25,339 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 17:07:25,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 17:07:25,339 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:07:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:07:25,340 INFO L85 PathProgramCache]: Analyzing trace with hash 701479761, now seen corresponding path program 1 times [2021-12-06 17:07:25,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:07:25,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518633951] [2021-12-06 17:07:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:07:25,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:07:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:07:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:07:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:07:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:07:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:07:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:07:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:07:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:07:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:07:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:07:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:07:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:07:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:07:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:07:25,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:07:25,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518633951] [2021-12-06 17:07:25,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518633951] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:07:25,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554640855] [2021-12-06 17:07:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:07:25,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:07:25,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:07:25,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:07:25,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:07:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:25,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:07:25,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:07:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:07:25,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:07:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:07:26,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554640855] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:07:26,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:07:26,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 13 [2021-12-06 17:07:26,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368560889] [2021-12-06 17:07:26,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:07:26,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:07:26,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:07:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:07:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:07:26,157 INFO L87 Difference]: Start difference. First operand 8202 states and 13894 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-06 17:07:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:07:38,378 INFO L93 Difference]: Finished difference Result 21249 states and 37861 transitions. [2021-12-06 17:07:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:07:38,379 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2021-12-06 17:07:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:07:38,446 INFO L225 Difference]: With dead ends: 21249 [2021-12-06 17:07:38,446 INFO L226 Difference]: Without dead ends: 13129 [2021-12-06 17:07:38,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 17:07:38,478 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 3762 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 5012 mSolverCounterSat, 1271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 6283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1271 IncrementalHoareTripleChecker+Valid, 5012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:07:38,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3823 Valid, 3087 Invalid, 6283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1271 Valid, 5012 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-12-06 17:07:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13129 states. [2021-12-06 17:07:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13129 to 9164. [2021-12-06 17:07:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 6855 states have (on average 1.5393143690736688) internal successors, (10552), 7307 states have internal predecessors, (10552), 1899 states have call successors, (1899), 282 states have call predecessors, (1899), 409 states have return successors, (2957), 1865 states have call predecessors, (2957), 1894 states have call successors, (2957) [2021-12-06 17:07:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 15408 transitions. [2021-12-06 17:07:40,489 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 15408 transitions. Word has length 132 [2021-12-06 17:07:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:07:40,489 INFO L470 AbstractCegarLoop]: Abstraction has 9164 states and 15408 transitions. [2021-12-06 17:07:40,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-06 17:07:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 15408 transitions. [2021-12-06 17:07:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 17:07:40,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:07:40,494 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-06 17:07:40,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:07:40,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:07:40,695 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:07:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:07:40,697 INFO L85 PathProgramCache]: Analyzing trace with hash 207187003, now seen corresponding path program 1 times [2021-12-06 17:07:40,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:07:40,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516167287] [2021-12-06 17:07:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:07:40,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:07:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:07:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:07:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:07:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:07:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:07:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:07:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:07:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:07:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:07:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:07:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:07:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 17:07:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:07:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 17:07:40,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:07:40,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516167287] [2021-12-06 17:07:40,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516167287] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:07:40,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559307940] [2021-12-06 17:07:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:07:40,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:07:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:07:40,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:07:40,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:07:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:41,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:07:41,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:07:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:07:41,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:07:41,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559307940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:07:41,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:07:41,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2021-12-06 17:07:41,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667905543] [2021-12-06 17:07:41,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:07:41,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:07:41,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:07:41,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:07:41,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:07:41,222 INFO L87 Difference]: Start difference. First operand 9164 states and 15408 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:07:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:07:45,289 INFO L93 Difference]: Finished difference Result 25410 states and 43228 transitions. [2021-12-06 17:07:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:07:45,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 136 [2021-12-06 17:07:45,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:07:45,356 INFO L225 Difference]: With dead ends: 25410 [2021-12-06 17:07:45,357 INFO L226 Difference]: Without dead ends: 16304 [2021-12-06 17:07:45,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:07:45,391 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 943 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:07:45,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 3320 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:07:45,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16304 states. [2021-12-06 17:07:48,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16304 to 15519. [2021-12-06 17:07:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15519 states, 11450 states have (on average 1.5572052401746725) internal successors, (17830), 12276 states have internal predecessors, (17830), 3415 states have call successors, (3415), 482 states have call predecessors, (3415), 653 states have return successors, (4769), 3385 states have call predecessors, (4769), 3410 states have call successors, (4769) [2021-12-06 17:07:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15519 states to 15519 states and 26014 transitions. [2021-12-06 17:07:48,874 INFO L78 Accepts]: Start accepts. Automaton has 15519 states and 26014 transitions. Word has length 136 [2021-12-06 17:07:48,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:07:48,874 INFO L470 AbstractCegarLoop]: Abstraction has 15519 states and 26014 transitions. [2021-12-06 17:07:48,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:07:48,874 INFO L276 IsEmpty]: Start isEmpty. Operand 15519 states and 26014 transitions. [2021-12-06 17:07:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 17:07:48,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:07:48,881 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-06 17:07:48,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:07:49,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f2153e-07a6-4392-bb51-c9ef10e481e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 17:07:49,083 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:07:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:07:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash -491403103, now seen corresponding path program 1 times [2021-12-06 17:07:49,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:07:49,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109341736] [2021-12-06 17:07:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:07:49,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:07:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:07:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:07:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:07:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:07:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:07:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:07:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:07:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:07:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:07:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:07:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:07:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 17:07:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:07:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:07:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 17:07:49,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:07:49,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109341736] [2021-12-06 17:07:49,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109341736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:07:49,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:07:49,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:07:49,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034289103] [2021-12-06 17:07:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:07:49,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:07:49,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:07:49,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:07:49,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:07:49,368 INFO L87 Difference]: Start difference. First operand 15519 states and 26014 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:08:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:08:03,122 INFO L93 Difference]: Finished difference Result 38041 states and 66689 transitions. [2021-12-06 17:08:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 17:08:03,123 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 135 [2021-12-06 17:08:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:08:03,261 INFO L225 Difference]: With dead ends: 38041 [2021-12-06 17:08:03,261 INFO L226 Difference]: Without dead ends: 22620 [2021-12-06 17:08:03,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:08:03,353 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 3403 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 5545 mSolverCounterSat, 1114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 6659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1114 IncrementalHoareTripleChecker+Valid, 5545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:08:03,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3463 Valid, 4038 Invalid, 6659 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1114 Valid, 5545 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-12-06 17:08:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22620 states. [2021-12-06 17:08:06,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22620 to 16030. [2021-12-06 17:08:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16030 states, 11941 states have (on average 1.549200234486224) internal successors, (18499), 12732 states have internal predecessors, (18499), 3383 states have call successors, (3383), 544 states have call predecessors, (3383), 705 states have return successors, (4673), 3353 states have call predecessors, (4673), 3378 states have call successors, (4673) [2021-12-06 17:08:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16030 states to 16030 states and 26555 transitions. [2021-12-06 17:08:06,943 INFO L78 Accepts]: Start accepts. Automaton has 16030 states and 26555 transitions. Word has length 135 [2021-12-06 17:08:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:08:06,943 INFO L470 AbstractCegarLoop]: Abstraction has 16030 states and 26555 transitions. [2021-12-06 17:08:06,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:08:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 16030 states and 26555 transitions. [2021-12-06 17:08:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 17:08:06,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:08:06,950 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 17:08:06,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 17:08:06,950 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:08:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:08:06,951 INFO L85 PathProgramCache]: Analyzing trace with hash 468694886, now seen corresponding path program 1 times [2021-12-06 17:08:06,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:08:06,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80642512] [2021-12-06 17:08:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:08:06,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:08:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:08:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:08:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:08:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:08:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:08:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:08:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:08:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:08:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:08:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:08:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:08:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:08:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:08:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 17:08:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:08:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 17:08:07,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:08:07,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80642512] [2021-12-06 17:08:07,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80642512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:08:07,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:08:07,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:08:07,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704271424] [2021-12-06 17:08:07,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:08:07,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:08:07,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:08:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:08:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:08:07,192 INFO L87 Difference]: Start difference. First operand 16030 states and 26555 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 17:08:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:08:29,744 INFO L93 Difference]: Finished difference Result 69016 states and 129549 transitions. [2021-12-06 17:08:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:08:29,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2021-12-06 17:08:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:08:30,263 INFO L225 Difference]: With dead ends: 69016 [2021-12-06 17:08:30,263 INFO L226 Difference]: Without dead ends: 53072 [2021-12-06 17:08:30,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:08:30,373 INFO L933 BasicCegarLoop]: 1118 mSDtfsCounter, 6389 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 2287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6458 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 4581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2287 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:08:30,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6458 Valid, 2320 Invalid, 4581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2287 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-12-06 17:08:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53072 states. [2021-12-06 17:08:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53072 to 35041. [2021-12-06 17:08:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35041 states, 25658 states have (on average 1.5429495673863902) internal successors, (39589), 27495 states have internal predecessors, (39589), 7870 states have call successors, (7870), 1083 states have call predecessors, (7870), 1512 states have return successors, (12580), 7852 states have call predecessors, (12580), 7865 states have call successors, (12580) [2021-12-06 17:08:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35041 states to 35041 states and 60039 transitions. [2021-12-06 17:08:39,796 INFO L78 Accepts]: Start accepts. Automaton has 35041 states and 60039 transitions. Word has length 141 [2021-12-06 17:08:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:08:39,796 INFO L470 AbstractCegarLoop]: Abstraction has 35041 states and 60039 transitions. [2021-12-06 17:08:39,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 17:08:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 35041 states and 60039 transitions. [2021-12-06 17:08:39,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 17:08:39,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:08:39,808 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 17:08:39,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 17:08:39,808 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:08:39,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:08:39,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1644219296, now seen corresponding path program 1 times [2021-12-06 17:08:39,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:08:39,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809456154] [2021-12-06 17:08:39,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:08:39,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:08:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:08:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:39,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:08:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:08:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:08:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:08:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:08:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:08:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:08:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:08:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:08:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:08:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:08:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:08:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 17:08:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:08:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 17:08:40,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:08:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809456154] [2021-12-06 17:08:40,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809456154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:08:40,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:08:40,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:08:40,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846604365] [2021-12-06 17:08:40,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:08:40,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:08:40,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:08:40,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:08:40,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:08:40,047 INFO L87 Difference]: Start difference. First operand 35041 states and 60039 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 17:09:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:27,809 INFO L93 Difference]: Finished difference Result 155907 states and 326959 transitions. [2021-12-06 17:09:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:09:27,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 142 [2021-12-06 17:09:27,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:29,352 INFO L225 Difference]: With dead ends: 155907 [2021-12-06 17:09:29,352 INFO L226 Difference]: Without dead ends: 120944 [2021-12-06 17:09:29,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:09:29,730 INFO L933 BasicCegarLoop]: 1053 mSDtfsCounter, 6435 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 2323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6508 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2323 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:29,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6508 Valid, 2180 Invalid, 4532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2323 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-12-06 17:09:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120944 states. [2021-12-06 17:09:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120944 to 78552. [2021-12-06 17:09:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78552 states, 56417 states have (on average 1.5336689295779642) internal successors, (86525), 60783 states have internal predecessors, (86525), 18845 states have call successors, (18845), 2153 states have call predecessors, (18845), 3289 states have return successors, (36253), 18927 states have call predecessors, (36253), 18840 states have call successors, (36253) [2021-12-06 17:09:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78552 states to 78552 states and 141623 transitions. [2021-12-06 17:09:53,362 INFO L78 Accepts]: Start accepts. Automaton has 78552 states and 141623 transitions. Word has length 142 [2021-12-06 17:09:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:53,362 INFO L470 AbstractCegarLoop]: Abstraction has 78552 states and 141623 transitions. [2021-12-06 17:09:53,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 17:09:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 78552 states and 141623 transitions. [2021-12-06 17:09:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 17:09:53,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:53,378 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-06 17:09:53,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 17:09:53,378 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1627013022, now seen corresponding path program 1 times [2021-12-06 17:09:53,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:53,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112851526] [2021-12-06 17:09:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:53,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:09:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:09:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:09:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:09:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:09:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:09:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:09:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:09:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:09:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:09:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:09:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:09:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:09:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 17:09:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 17:09:53,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:53,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112851526] [2021-12-06 17:09:53,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112851526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:09:53,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:09:53,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:09:53,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914934924] [2021-12-06 17:09:53,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:09:53,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:09:53,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:53,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:09:53,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:09:53,629 INFO L87 Difference]: Start difference. First operand 78552 states and 141623 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 17:11:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:11:53,770 INFO L93 Difference]: Finished difference Result 372646 states and 888556 transitions. [2021-12-06 17:11:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:11:53,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 141 [2021-12-06 17:11:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:11:58,745 INFO L225 Difference]: With dead ends: 372646 [2021-12-06 17:11:58,745 INFO L226 Difference]: Without dead ends: 294180 [2021-12-06 17:11:59,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:11:59,975 INFO L933 BasicCegarLoop]: 1059 mSDtfsCounter, 2992 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 3071 mSolverCounterSat, 1275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 4346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1275 IncrementalHoareTripleChecker+Valid, 3071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:11:59,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3065 Valid, 2763 Invalid, 4346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1275 Valid, 3071 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-12-06 17:12:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294180 states. [2021-12-06 17:13:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294180 to 182547. [2021-12-06 17:13:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182547 states, 128508 states have (on average 1.5246910698166651) internal successors, (195935), 139081 states have internal predecessors, (195935), 46760 states have call successors, (46760), 4301 states have call predecessors, (46760), 7278 states have return successors, (109815), 47270 states have call predecessors, (109815), 46755 states have call successors, (109815) [2021-12-06 17:13:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182547 states to 182547 states and 352510 transitions. [2021-12-06 17:13:03,686 INFO L78 Accepts]: Start accepts. Automaton has 182547 states and 352510 transitions. Word has length 141 [2021-12-06 17:13:03,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:13:03,687 INFO L470 AbstractCegarLoop]: Abstraction has 182547 states and 352510 transitions. [2021-12-06 17:13:03,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 17:13:03,687 INFO L276 IsEmpty]: Start isEmpty. Operand 182547 states and 352510 transitions. [2021-12-06 17:13:03,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 17:13:03,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:13:03,702 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-06 17:13:03,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 17:13:03,702 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:13:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:13:03,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1101791400, now seen corresponding path program 1 times [2021-12-06 17:13:03,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:13:03,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289288791] [2021-12-06 17:13:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:13:03,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:13:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:13:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:13:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:13:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:13:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:13:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:13:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:13:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:13:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:13:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:13:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:13:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:13:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:13:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 17:13:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:13:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 17:13:03,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:13:03,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289288791] [2021-12-06 17:13:03,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289288791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:13:03,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:13:03,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:13:03,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693219124] [2021-12-06 17:13:03,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:13:03,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:13:03,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:13:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:13:03,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:13:03,939 INFO L87 Difference]: Start difference. First operand 182547 states and 352510 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14)