/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:08:04,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:08:04,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:08:04,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:08:04,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:08:04,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:08:04,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:08:04,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:08:04,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:08:04,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:08:04,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:08:04,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:08:04,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:08:04,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:08:04,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:08:04,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:08:04,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:08:04,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:08:04,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:08:04,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:08:04,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:08:04,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:08:04,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:08:04,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:08:04,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:08:04,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:08:04,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:08:04,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:08:04,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:08:04,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:08:04,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:08:04,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:08:04,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:08:04,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:08:04,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:08:04,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:08:04,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:08:04,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:08:04,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:08:04,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:08:04,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:08:04,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:08:04,755 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:08:04,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:08:04,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:08:04,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:08:04,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:08:04,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:08:04,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:08:04,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:08:04,757 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:08:04,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:08:04,757 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:08:04,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:08:04,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:08:04,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:08:04,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:08:04,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:08:04,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:08:04,758 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:08:04,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:08:04,758 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:08:04,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:08:04,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:08:04,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:08:04,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:08:04,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:08:04,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:08:04,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:08:04,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:08:04,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:08:04,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:08:04,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:08:04,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:08:04,760 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:08:04,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:08:04,760 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:08:04,760 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:08:04,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:08:04,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:08:04,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:08:04,933 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:08:04,933 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:08:04,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2023-04-02 05:08:06,042 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:08:06,196 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:08:06,196 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2023-04-02 05:08:06,210 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a314876/688b2af7d0b3417d97e873ad8d25369b/FLAGbee65f42d [2023-04-02 05:08:06,595 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a314876/688b2af7d0b3417d97e873ad8d25369b [2023-04-02 05:08:06,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:08:06,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:08:06,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:08:06,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:08:06,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:08:06,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e413de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06, skipping insertion in model container [2023-04-02 05:08:06,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:08:06,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:08:06,735 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2023-04-02 05:08:06,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:08:06,744 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:08:06,770 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2023-04-02 05:08:06,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:08:06,781 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:08:06,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06 WrapperNode [2023-04-02 05:08:06,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:08:06,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:08:06,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:08:06,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:08:06,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,805 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:08:06,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:08:06,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:08:06,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:08:06,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (1/1) ... [2023-04-02 05:08:06,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:08:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:08:06,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:08:06,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:08:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:08:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:08:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:08:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:08:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:08:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:08:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:08:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:08:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:08:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:08:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:08:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:08:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:08:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:08:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:08:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:08:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:08:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:08:06,923 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:08:06,924 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:08:07,236 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:08:07,242 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:08:07,242 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:08:07,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:08:07 BoogieIcfgContainer [2023-04-02 05:08:07,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:08:07,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:08:07,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:08:07,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:08:07,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:08:06" (1/3) ... [2023-04-02 05:08:07,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdfc018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:08:07, skipping insertion in model container [2023-04-02 05:08:07,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:08:06" (2/3) ... [2023-04-02 05:08:07,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdfc018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:08:07, skipping insertion in model container [2023-04-02 05:08:07,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:08:07" (3/3) ... [2023-04-02 05:08:07,249 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2023-04-02 05:08:07,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:08:07,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:08:07,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:08:07,322 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6a974d13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:08:07,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:08:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 76 states have (on average 1.605263157894737) internal successors, (122), 77 states have internal predecessors, (122), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:08:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-02 05:08:07,333 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:07,333 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:08:07,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:07,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash 197438278, now seen corresponding path program 1 times [2023-04-02 05:08:07,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:07,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089345306] [2023-04-02 05:08:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:07,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:07,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:07,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 05:08:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 05:08:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:07,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:08:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:08:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:07,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089345306] [2023-04-02 05:08:07,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089345306] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:07,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:07,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:08:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190778217] [2023-04-02 05:08:07,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:07,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:08:07,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:07,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:08:07,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:08:07,873 INFO L87 Difference]: Start difference. First operand has 94 states, 76 states have (on average 1.605263157894737) internal successors, (122), 77 states have internal predecessors, (122), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:08:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:08,226 INFO L93 Difference]: Finished difference Result 161 states and 232 transitions. [2023-04-02 05:08:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:08:08,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-04-02 05:08:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:08,233 INFO L225 Difference]: With dead ends: 161 [2023-04-02 05:08:08,233 INFO L226 Difference]: Without dead ends: 92 [2023-04-02 05:08:08,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:08:08,237 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 147 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:08,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 69 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:08:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-04-02 05:08:08,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2023-04-02 05:08:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.5753424657534247) internal successors, (115), 73 states have internal predecessors, (115), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 05:08:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 130 transitions. [2023-04-02 05:08:08,280 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 130 transitions. Word has length 49 [2023-04-02 05:08:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:08,281 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 130 transitions. [2023-04-02 05:08:08,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:08:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 130 transitions. [2023-04-02 05:08:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-02 05:08:08,282 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:08,282 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:08:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:08:08,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:08,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -196928508, now seen corresponding path program 1 times [2023-04-02 05:08:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:08,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730417497] [2023-04-02 05:08:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 05:08:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 05:08:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:08:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:08:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:08,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:08,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730417497] [2023-04-02 05:08:08,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730417497] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:08,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:08,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:08:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991699567] [2023-04-02 05:08:08,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:08,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:08:08,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:08,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:08:08,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:08:08,553 INFO L87 Difference]: Start difference. First operand 89 states and 130 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:08:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:09,166 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2023-04-02 05:08:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 05:08:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-04-02 05:08:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:09,168 INFO L225 Difference]: With dead ends: 165 [2023-04-02 05:08:09,168 INFO L226 Difference]: Without dead ends: 101 [2023-04-02 05:08:09,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:08:09,169 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 284 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:09,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 91 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:08:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-04-02 05:08:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2023-04-02 05:08:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 05:08:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 113 transitions. [2023-04-02 05:08:09,182 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 113 transitions. Word has length 49 [2023-04-02 05:08:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:09,182 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 113 transitions. [2023-04-02 05:08:09,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:08:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 113 transitions. [2023-04-02 05:08:09,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-02 05:08:09,183 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:09,184 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:08:09,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:08:09,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:09,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1847381946, now seen corresponding path program 1 times [2023-04-02 05:08:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:09,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657034926] [2023-04-02 05:08:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:09,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:09,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:09,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:09,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:09,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:09,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657034926] [2023-04-02 05:08:09,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657034926] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:09,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:09,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:08:09,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074065637] [2023-04-02 05:08:09,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:09,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:08:09,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:08:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:08:09,504 INFO L87 Difference]: Start difference. First operand 89 states and 113 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:08:11,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:11,392 INFO L93 Difference]: Finished difference Result 531 states and 738 transitions. [2023-04-02 05:08:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 05:08:11,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2023-04-02 05:08:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:11,402 INFO L225 Difference]: With dead ends: 531 [2023-04-02 05:08:11,402 INFO L226 Difference]: Without dead ends: 473 [2023-04-02 05:08:11,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=577, Invalid=1973, Unknown=0, NotChecked=0, Total=2550 [2023-04-02 05:08:11,407 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1002 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:11,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 173 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:08:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-04-02 05:08:11,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 440. [2023-04-02 05:08:11,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 357 states have (on average 1.4593837535014005) internal successors, (521), 364 states have internal predecessors, (521), 38 states have call successors, (38), 38 states have call predecessors, (38), 44 states have return successors, (61), 37 states have call predecessors, (61), 37 states have call successors, (61) [2023-04-02 05:08:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 620 transitions. [2023-04-02 05:08:11,474 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 620 transitions. Word has length 65 [2023-04-02 05:08:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:11,475 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 620 transitions. [2023-04-02 05:08:11,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:08:11,475 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 620 transitions. [2023-04-02 05:08:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 05:08:11,482 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:11,482 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:08:11,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:08:11,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:11,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:11,483 INFO L85 PathProgramCache]: Analyzing trace with hash 504482728, now seen corresponding path program 1 times [2023-04-02 05:08:11,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:11,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075754423] [2023-04-02 05:08:11,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:11,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:11,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:11,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:11,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:11,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:11,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075754423] [2023-04-02 05:08:11,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075754423] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:11,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:11,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:08:11,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797917116] [2023-04-02 05:08:11,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:11,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:08:11,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:11,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:08:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:08:11,881 INFO L87 Difference]: Start difference. First operand 440 states and 620 transitions. Second operand has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 05:08:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:12,831 INFO L93 Difference]: Finished difference Result 538 states and 756 transitions. [2023-04-02 05:08:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:08:12,832 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2023-04-02 05:08:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:12,836 INFO L225 Difference]: With dead ends: 538 [2023-04-02 05:08:12,836 INFO L226 Difference]: Without dead ends: 536 [2023-04-02 05:08:12,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:08:12,843 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 301 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:12,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 252 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:08:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-04-02 05:08:12,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 476. [2023-04-02 05:08:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 381 states have (on average 1.4304461942257218) internal successors, (545), 392 states have internal predecessors, (545), 42 states have call successors, (42), 42 states have call predecessors, (42), 52 states have return successors, (69), 41 states have call predecessors, (69), 41 states have call successors, (69) [2023-04-02 05:08:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 656 transitions. [2023-04-02 05:08:12,891 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 656 transitions. Word has length 66 [2023-04-02 05:08:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:12,892 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 656 transitions. [2023-04-02 05:08:12,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 05:08:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 656 transitions. [2023-04-02 05:08:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 05:08:12,894 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:12,894 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:08:12,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:08:12,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:12,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash -890701998, now seen corresponding path program 1 times [2023-04-02 05:08:12,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:12,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286103893] [2023-04-02 05:08:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:12,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286103893] [2023-04-02 05:08:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286103893] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:13,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:13,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:08:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642756497] [2023-04-02 05:08:13,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:13,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:08:13,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:08:13,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:08:13,198 INFO L87 Difference]: Start difference. First operand 476 states and 656 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:08:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:14,242 INFO L93 Difference]: Finished difference Result 2032 states and 2846 transitions. [2023-04-02 05:08:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:08:14,242 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 67 [2023-04-02 05:08:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:14,249 INFO L225 Difference]: With dead ends: 2032 [2023-04-02 05:08:14,249 INFO L226 Difference]: Without dead ends: 1587 [2023-04-02 05:08:14,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:08:14,253 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 621 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:14,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 139 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:08:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2023-04-02 05:08:14,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1503. [2023-04-02 05:08:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1194 states have (on average 1.4380234505862646) internal successors, (1717), 1231 states have internal predecessors, (1717), 136 states have call successors, (136), 136 states have call predecessors, (136), 172 states have return successors, (260), 135 states have call predecessors, (260), 135 states have call successors, (260) [2023-04-02 05:08:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 2113 transitions. [2023-04-02 05:08:14,351 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 2113 transitions. Word has length 67 [2023-04-02 05:08:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:14,351 INFO L495 AbstractCegarLoop]: Abstraction has 1503 states and 2113 transitions. [2023-04-02 05:08:14,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:08:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 2113 transitions. [2023-04-02 05:08:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 05:08:14,352 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:14,352 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:08:14,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:08:14,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:14,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash -769161800, now seen corresponding path program 1 times [2023-04-02 05:08:14,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:14,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270871405] [2023-04-02 05:08:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:14,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:14,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 05:08:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:14,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:08:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:14,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:08:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:14,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:14,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270871405] [2023-04-02 05:08:14,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270871405] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:14,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:14,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:08:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199429533] [2023-04-02 05:08:14,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:14,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:08:14,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:08:14,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:08:14,565 INFO L87 Difference]: Start difference. First operand 1503 states and 2113 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:08:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:15,532 INFO L93 Difference]: Finished difference Result 3291 states and 4645 transitions. [2023-04-02 05:08:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:08:15,532 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-04-02 05:08:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:15,538 INFO L225 Difference]: With dead ends: 3291 [2023-04-02 05:08:15,538 INFO L226 Difference]: Without dead ends: 2117 [2023-04-02 05:08:15,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:08:15,541 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 973 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:15,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 63 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:08:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2023-04-02 05:08:15,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1560. [2023-04-02 05:08:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1240 states have (on average 1.4411290322580645) internal successors, (1787), 1281 states have internal predecessors, (1787), 140 states have call successors, (140), 140 states have call predecessors, (140), 179 states have return successors, (268), 138 states have call predecessors, (268), 139 states have call successors, (268) [2023-04-02 05:08:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2195 transitions. [2023-04-02 05:08:15,651 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2195 transitions. Word has length 68 [2023-04-02 05:08:15,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:15,653 INFO L495 AbstractCegarLoop]: Abstraction has 1560 states and 2195 transitions. [2023-04-02 05:08:15,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:08:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2195 transitions. [2023-04-02 05:08:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 05:08:15,654 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:15,654 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:08:15,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:08:15,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:15,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:15,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1721202459, now seen corresponding path program 1 times [2023-04-02 05:08:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:15,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569639408] [2023-04-02 05:08:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:15,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:08:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:15,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:15,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569639408] [2023-04-02 05:08:15,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569639408] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:15,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:15,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:08:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012811395] [2023-04-02 05:08:15,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:15,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:08:15,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:15,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:08:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:08:15,886 INFO L87 Difference]: Start difference. First operand 1560 states and 2195 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:08:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:16,886 INFO L93 Difference]: Finished difference Result 3331 states and 4596 transitions. [2023-04-02 05:08:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:08:16,886 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-04-02 05:08:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:16,891 INFO L225 Difference]: With dead ends: 3331 [2023-04-02 05:08:16,891 INFO L226 Difference]: Without dead ends: 1841 [2023-04-02 05:08:16,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:08:16,896 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 795 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:16,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 68 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:08:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2023-04-02 05:08:17,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1599. [2023-04-02 05:08:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1271 states have (on average 1.4390243902439024) internal successors, (1829), 1314 states have internal predecessors, (1829), 143 states have call successors, (143), 143 states have call predecessors, (143), 184 states have return successors, (274), 141 states have call predecessors, (274), 142 states have call successors, (274) [2023-04-02 05:08:17,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2246 transitions. [2023-04-02 05:08:17,012 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2246 transitions. Word has length 68 [2023-04-02 05:08:17,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:17,013 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2246 transitions. [2023-04-02 05:08:17,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:08:17,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2246 transitions. [2023-04-02 05:08:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 05:08:17,013 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:17,013 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:08:17,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:08:17,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:17,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1174384607, now seen corresponding path program 1 times [2023-04-02 05:08:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:17,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089779800] [2023-04-02 05:08:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:17,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:08:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:08:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:17,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089779800] [2023-04-02 05:08:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089779800] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:17,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:17,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:08:17,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526032155] [2023-04-02 05:08:17,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:17,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:08:17,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:08:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:08:17,230 INFO L87 Difference]: Start difference. First operand 1599 states and 2246 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:08:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:18,223 INFO L93 Difference]: Finished difference Result 3750 states and 5213 transitions. [2023-04-02 05:08:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:08:18,224 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-04-02 05:08:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:18,230 INFO L225 Difference]: With dead ends: 3750 [2023-04-02 05:08:18,230 INFO L226 Difference]: Without dead ends: 2218 [2023-04-02 05:08:18,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:08:18,233 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 781 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:18,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 63 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:08:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2023-04-02 05:08:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1617. [2023-04-02 05:08:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1286 states have (on average 1.4409020217729394) internal successors, (1853), 1330 states have internal predecessors, (1853), 144 states have call successors, (144), 144 states have call predecessors, (144), 186 states have return successors, (277), 142 states have call predecessors, (277), 143 states have call successors, (277) [2023-04-02 05:08:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2274 transitions. [2023-04-02 05:08:18,339 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2274 transitions. Word has length 68 [2023-04-02 05:08:18,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:18,340 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2274 transitions. [2023-04-02 05:08:18,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:08:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2274 transitions. [2023-04-02 05:08:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 05:08:18,343 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:18,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:08:18,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:08:18,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:18,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:18,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1737452286, now seen corresponding path program 1 times [2023-04-02 05:08:18,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:18,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205200146] [2023-04-02 05:08:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:18,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:08:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:08:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:08:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:08:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 05:08:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:08:18,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:18,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205200146] [2023-04-02 05:08:18,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205200146] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:08:18,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5657553] [2023-04-02 05:08:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:18,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:08:18,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:08:18,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:08:18,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:08:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:18,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:08:18,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:08:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-02 05:08:18,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:08:18,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5657553] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:18,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:08:18,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-04-02 05:08:18,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989384232] [2023-04-02 05:08:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:08:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:18,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:08:18,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:08:18,855 INFO L87 Difference]: Start difference. First operand 1617 states and 2274 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:08:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:19,243 INFO L93 Difference]: Finished difference Result 3531 states and 4994 transitions. [2023-04-02 05:08:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:08:19,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 104 [2023-04-02 05:08:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:19,251 INFO L225 Difference]: With dead ends: 3531 [2023-04-02 05:08:19,251 INFO L226 Difference]: Without dead ends: 2383 [2023-04-02 05:08:19,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:08:19,254 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 170 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:19,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 109 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:08:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2023-04-02 05:08:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2279. [2023-04-02 05:08:19,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1803 states have (on average 1.418191902384914) internal successors, (2557), 1840 states have internal predecessors, (2557), 220 states have call successors, (220), 220 states have call predecessors, (220), 255 states have return successors, (385), 218 states have call predecessors, (385), 219 states have call successors, (385) [2023-04-02 05:08:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3162 transitions. [2023-04-02 05:08:19,406 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3162 transitions. Word has length 104 [2023-04-02 05:08:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:19,407 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3162 transitions. [2023-04-02 05:08:19,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:08:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3162 transitions. [2023-04-02 05:08:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:08:19,408 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:19,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:19,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 05:08:19,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:08:19,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:19,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:19,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2003021815, now seen corresponding path program 1 times [2023-04-02 05:08:19,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:19,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867814353] [2023-04-02 05:08:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:08:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:08:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:08:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:08:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:08:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 05:08:19,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:19,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867814353] [2023-04-02 05:08:19,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867814353] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:19,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:19,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:08:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17444019] [2023-04-02 05:08:19,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:19,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:08:19,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:08:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:08:19,943 INFO L87 Difference]: Start difference. First operand 2279 states and 3162 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:08:22,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:22,802 INFO L93 Difference]: Finished difference Result 4716 states and 6555 transitions. [2023-04-02 05:08:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-04-02 05:08:22,803 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2023-04-02 05:08:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:22,815 INFO L225 Difference]: With dead ends: 4716 [2023-04-02 05:08:22,815 INFO L226 Difference]: Without dead ends: 3477 [2023-04-02 05:08:22,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1620 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=854, Invalid=3976, Unknown=0, NotChecked=0, Total=4830 [2023-04-02 05:08:22,819 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1520 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:22,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 187 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:08:22,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2023-04-02 05:08:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3031. [2023-04-02 05:08:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 2397 states have (on average 1.4196912807676263) internal successors, (3403), 2446 states have internal predecessors, (3403), 293 states have call successors, (293), 293 states have call predecessors, (293), 340 states have return successors, (511), 291 states have call predecessors, (511), 292 states have call successors, (511) [2023-04-02 05:08:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 4207 transitions. [2023-04-02 05:08:23,069 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 4207 transitions. Word has length 105 [2023-04-02 05:08:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:23,069 INFO L495 AbstractCegarLoop]: Abstraction has 3031 states and 4207 transitions. [2023-04-02 05:08:23,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:08:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 4207 transitions. [2023-04-02 05:08:23,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:08:23,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:23,071 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:23,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:08:23,072 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:23,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash 487342444, now seen corresponding path program 1 times [2023-04-02 05:08:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:23,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939154452] [2023-04-02 05:08:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:23,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:08:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:08:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:08:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:08:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:08:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 05:08:23,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:23,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939154452] [2023-04-02 05:08:23,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939154452] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:23,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:23,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:08:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347209887] [2023-04-02 05:08:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:23,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:08:23,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:23,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:08:23,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:08:23,388 INFO L87 Difference]: Start difference. First operand 3031 states and 4207 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:08:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:26,187 INFO L93 Difference]: Finished difference Result 7549 states and 10468 transitions. [2023-04-02 05:08:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-04-02 05:08:26,188 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 105 [2023-04-02 05:08:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:26,210 INFO L225 Difference]: With dead ends: 7549 [2023-04-02 05:08:26,211 INFO L226 Difference]: Without dead ends: 4937 [2023-04-02 05:08:26,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=794, Invalid=3628, Unknown=0, NotChecked=0, Total=4422 [2023-04-02 05:08:26,219 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1394 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:26,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 226 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:08:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2023-04-02 05:08:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 4459. [2023-04-02 05:08:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4459 states, 3535 states have (on average 1.426025459688826) internal successors, (5041), 3590 states have internal predecessors, (5041), 435 states have call successors, (435), 435 states have call predecessors, (435), 488 states have return successors, (742), 433 states have call predecessors, (742), 434 states have call successors, (742) [2023-04-02 05:08:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 6218 transitions. [2023-04-02 05:08:26,559 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 6218 transitions. Word has length 105 [2023-04-02 05:08:26,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:26,559 INFO L495 AbstractCegarLoop]: Abstraction has 4459 states and 6218 transitions. [2023-04-02 05:08:26,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:08:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 6218 transitions. [2023-04-02 05:08:26,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:08:26,563 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:26,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:26,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:08:26,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:26,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:26,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1886722674, now seen corresponding path program 1 times [2023-04-02 05:08:26,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:26,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269846427] [2023-04-02 05:08:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:26,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:08:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:08:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:08:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:08:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:08:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 05:08:26,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:26,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269846427] [2023-04-02 05:08:26,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269846427] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:26,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:26,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:08:26,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869577326] [2023-04-02 05:08:26,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:26,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:08:26,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:08:26,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:08:26,891 INFO L87 Difference]: Start difference. First operand 4459 states and 6218 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:08:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:29,593 INFO L93 Difference]: Finished difference Result 7969 states and 11087 transitions. [2023-04-02 05:08:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-04-02 05:08:29,594 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2023-04-02 05:08:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:29,609 INFO L225 Difference]: With dead ends: 7969 [2023-04-02 05:08:29,609 INFO L226 Difference]: Without dead ends: 5204 [2023-04-02 05:08:29,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=716, Invalid=3066, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 05:08:29,615 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1088 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:29,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 243 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:08:29,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2023-04-02 05:08:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 4428. [2023-04-02 05:08:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 3512 states have (on average 1.4276765375854215) internal successors, (5014), 3589 states have internal predecessors, (5014), 420 states have call successors, (420), 420 states have call predecessors, (420), 495 states have return successors, (715), 418 states have call predecessors, (715), 419 states have call successors, (715) [2023-04-02 05:08:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 6149 transitions. [2023-04-02 05:08:29,942 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 6149 transitions. Word has length 105 [2023-04-02 05:08:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:29,942 INFO L495 AbstractCegarLoop]: Abstraction has 4428 states and 6149 transitions. [2023-04-02 05:08:29,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:08:29,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 6149 transitions. [2023-04-02 05:08:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:08:29,943 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:29,943 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:29,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:08:29,944 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:29,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:29,944 INFO L85 PathProgramCache]: Analyzing trace with hash 34332780, now seen corresponding path program 1 times [2023-04-02 05:08:29,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:29,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977237555] [2023-04-02 05:08:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:29,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:08:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:08:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:08:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:08:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:08:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:08:30,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:30,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977237555] [2023-04-02 05:08:30,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977237555] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:08:30,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204665536] [2023-04-02 05:08:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:30,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:08:30,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:08:30,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:08:30,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:08:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:30,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:08:30,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:08:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:30,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:08:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:08:30,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204665536] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:08:30,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:08:30,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-04-02 05:08:30,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638355063] [2023-04-02 05:08:30,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:08:30,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:08:30,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:30,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:08:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:08:30,634 INFO L87 Difference]: Start difference. First operand 4428 states and 6149 transitions. Second operand has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:08:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:32,625 INFO L93 Difference]: Finished difference Result 11091 states and 15290 transitions. [2023-04-02 05:08:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-02 05:08:32,626 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 108 [2023-04-02 05:08:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:32,645 INFO L225 Difference]: With dead ends: 11091 [2023-04-02 05:08:32,645 INFO L226 Difference]: Without dead ends: 6729 [2023-04-02 05:08:32,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:08:32,653 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1141 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:32,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 117 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:08:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6729 states. [2023-04-02 05:08:33,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6729 to 5694. [2023-04-02 05:08:33,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 4430 states have (on average 1.3785553047404062) internal successors, (6107), 4563 states have internal predecessors, (6107), 566 states have call successors, (566), 566 states have call predecessors, (566), 697 states have return successors, (971), 564 states have call predecessors, (971), 565 states have call successors, (971) [2023-04-02 05:08:33,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 7644 transitions. [2023-04-02 05:08:33,167 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 7644 transitions. Word has length 108 [2023-04-02 05:08:33,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:33,168 INFO L495 AbstractCegarLoop]: Abstraction has 5694 states and 7644 transitions. [2023-04-02 05:08:33,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:08:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 7644 transitions. [2023-04-02 05:08:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:08:33,170 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:33,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:33,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 05:08:33,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 05:08:33,376 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:33,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:33,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1433713010, now seen corresponding path program 1 times [2023-04-02 05:08:33,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:33,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874666436] [2023-04-02 05:08:33,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:33,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:08:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:08:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:08:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:08:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:08:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:08:33,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:33,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874666436] [2023-04-02 05:08:33,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874666436] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:08:33,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197941877] [2023-04-02 05:08:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:33,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:08:33,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:08:33,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:08:33,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:08:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:33,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:08:33,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:08:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:33,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:08:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:08:33,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197941877] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:08:33,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:08:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-04-02 05:08:33,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497187643] [2023-04-02 05:08:33,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:08:33,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:08:33,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:08:33,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:08:33,960 INFO L87 Difference]: Start difference. First operand 5694 states and 7644 transitions. Second operand has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:08:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:36,325 INFO L93 Difference]: Finished difference Result 15395 states and 20662 transitions. [2023-04-02 05:08:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-02 05:08:36,326 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 108 [2023-04-02 05:08:36,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:36,351 INFO L225 Difference]: With dead ends: 15395 [2023-04-02 05:08:36,352 INFO L226 Difference]: Without dead ends: 10611 [2023-04-02 05:08:36,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=484, Invalid=1678, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:08:36,361 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1078 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:36,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 138 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:08:36,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10611 states. [2023-04-02 05:08:37,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10611 to 9648. [2023-04-02 05:08:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9648 states, 7303 states have (on average 1.3200054772011502) internal successors, (9640), 7545 states have internal predecessors, (9640), 1052 states have call successors, (1052), 1052 states have call predecessors, (1052), 1292 states have return successors, (1938), 1050 states have call predecessors, (1938), 1051 states have call successors, (1938) [2023-04-02 05:08:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9648 states to 9648 states and 12630 transitions. [2023-04-02 05:08:37,185 INFO L78 Accepts]: Start accepts. Automaton has 9648 states and 12630 transitions. Word has length 108 [2023-04-02 05:08:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:37,185 INFO L495 AbstractCegarLoop]: Abstraction has 9648 states and 12630 transitions. [2023-04-02 05:08:37,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:08:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 9648 states and 12630 transitions. [2023-04-02 05:08:37,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:08:37,187 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:37,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:37,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 05:08:37,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:08:37,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:37,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash 255282353, now seen corresponding path program 1 times [2023-04-02 05:08:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:37,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823577050] [2023-04-02 05:08:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:08:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:08:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:08:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:37,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:08:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:08:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:08:38,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823577050] [2023-04-02 05:08:38,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823577050] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:08:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602926618] [2023-04-02 05:08:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:38,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:08:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:08:38,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:08:38,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 05:08:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 05:08:38,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:08:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:39,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:08:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:08:40,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602926618] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:08:40,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:08:40,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 47 [2023-04-02 05:08:40,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003433160] [2023-04-02 05:08:40,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:08:40,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-04-02 05:08:40,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-04-02 05:08:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1889, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:08:40,490 INFO L87 Difference]: Start difference. First operand 9648 states and 12630 transitions. Second operand has 47 states, 44 states have (on average 4.5) internal successors, (198), 40 states have internal predecessors, (198), 16 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2023-04-02 05:08:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:47,994 INFO L93 Difference]: Finished difference Result 49132 states and 65226 transitions. [2023-04-02 05:08:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-04-02 05:08:47,995 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 4.5) internal successors, (198), 40 states have internal predecessors, (198), 16 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) Word has length 108 [2023-04-02 05:08:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:48,113 INFO L225 Difference]: With dead ends: 49132 [2023-04-02 05:08:48,114 INFO L226 Difference]: Without dead ends: 39629 [2023-04-02 05:08:48,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2640 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2020, Invalid=8282, Unknown=0, NotChecked=0, Total=10302 [2023-04-02 05:08:48,144 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2162 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 3391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:48,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 174 Invalid, 3391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 05:08:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39629 states. [2023-04-02 05:08:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39629 to 35852. [2023-04-02 05:08:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35852 states, 26808 states have (on average 1.3045359594151) internal successors, (34972), 28399 states have internal predecessors, (34972), 3801 states have call successors, (3801), 3653 states have call predecessors, (3801), 5242 states have return successors, (8994), 3799 states have call predecessors, (8994), 3800 states have call successors, (8994) [2023-04-02 05:08:51,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35852 states to 35852 states and 47767 transitions. [2023-04-02 05:08:51,868 INFO L78 Accepts]: Start accepts. Automaton has 35852 states and 47767 transitions. Word has length 108 [2023-04-02 05:08:51,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:51,868 INFO L495 AbstractCegarLoop]: Abstraction has 35852 states and 47767 transitions. [2023-04-02 05:08:51,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 4.5) internal successors, (198), 40 states have internal predecessors, (198), 16 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2023-04-02 05:08:51,869 INFO L276 IsEmpty]: Start isEmpty. Operand 35852 states and 47767 transitions. [2023-04-02 05:08:51,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:08:51,873 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:51,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:51,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 05:08:52,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-02 05:08:52,079 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:52,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:52,079 INFO L85 PathProgramCache]: Analyzing trace with hash -398806805, now seen corresponding path program 1 times [2023-04-02 05:08:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:52,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586844135] [2023-04-02 05:08:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:52,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:08:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:52,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:08:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:08:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:53,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:08:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:08:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:53,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:08:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:08:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:08:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:53,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:08:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:08:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586844135] [2023-04-02 05:08:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586844135] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:08:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064164564] [2023-04-02 05:08:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:53,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:08:53,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:08:53,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:08:53,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 05:08:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:53,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 05:08:53,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:08:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:54,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:08:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:08:56,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064164564] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:08:56,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:08:56,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 18] total 52 [2023-04-02 05:08:56,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684036212] [2023-04-02 05:08:56,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:08:56,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-04-02 05:08:56,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:56,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-04-02 05:08:56,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=2376, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:08:56,053 INFO L87 Difference]: Start difference. First operand 35852 states and 47767 transitions. Second operand has 52 states, 48 states have (on average 4.333333333333333) internal successors, (208), 44 states have internal predecessors, (208), 16 states have call successors, (34), 14 states have call predecessors, (34), 15 states have return successors, (30), 15 states have call predecessors, (30), 15 states have call successors, (30) [2023-04-02 05:10:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:10:57,443 INFO L93 Difference]: Finished difference Result 586777 states and 797799 transitions. [2023-04-02 05:10:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 522 states. [2023-04-02 05:10:57,444 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 48 states have (on average 4.333333333333333) internal successors, (208), 44 states have internal predecessors, (208), 16 states have call successors, (34), 14 states have call predecessors, (34), 15 states have return successors, (30), 15 states have call predecessors, (30), 15 states have call successors, (30) Word has length 108 [2023-04-02 05:10:57,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:11:00,663 INFO L225 Difference]: With dead ends: 586777 [2023-04-02 05:11:00,663 INFO L226 Difference]: Without dead ends: 547278 [2023-04-02 05:11:00,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 487 SyntacticMatches, 1 SemanticMatches, 569 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141944 ImplicationChecksByTransitivity, 57.1s TimeCoverageRelationStatistics Valid=32211, Invalid=293259, Unknown=0, NotChecked=0, Total=325470 [2023-04-02 05:11:00,945 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8004 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 6023 mSolverCounterSat, 1406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8004 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 7429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1406 IncrementalHoareTripleChecker+Valid, 6023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:11:00,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8004 Valid, 249 Invalid, 7429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1406 Valid, 6023 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-02 05:11:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547278 states. [2023-04-02 05:12:05,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547278 to 494715. [2023-04-02 05:12:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494715 states, 365472 states have (on average 1.2728827379388845) internal successors, (465203), 400822 states have internal predecessors, (465203), 48944 states have call successors, (48944), 44950 states have call predecessors, (48944), 80298 states have return successors, (150193), 48942 states have call predecessors, (150193), 48943 states have call successors, (150193)