/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:14:56,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:14:56,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:14:56,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 04:14:56,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 04:14:56,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 04:14:56,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 04:14:56,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 04:14:56,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 04:14:56,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 04:14:56,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 04:14:56,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 04:14:56,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 04:14:56,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 04:14:56,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 04:14:56,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 04:14:56,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 04:14:56,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 04:14:56,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 04:14:57,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 04:14:57,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 04:14:57,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 04:14:57,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 04:14:57,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 04:14:57,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 04:14:57,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:14:57,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:14:57,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:14:57,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:14:57,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:14:57,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:14:57,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:14:57,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:14:57,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:14:57,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:14:57,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:14:57,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:14:57,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:14:57,042 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:14:57,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:14:57,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:14:57,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:14:57,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:14:57,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:14:57,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:14:57,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:14:57,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:14:57,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:14:57,043 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:14:57,043 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:14:57,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:14:57,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:14:57,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:14:57,252 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:14:57,256 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:14:57,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-02-24 04:14:57,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b73836297/5138a796b0464480adbc3224d5cf89bc/FLAG97d1b304a [2022-02-24 04:14:57,714 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:14:57,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-02-24 04:14:57,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b73836297/5138a796b0464480adbc3224d5cf89bc/FLAG97d1b304a [2022-02-24 04:14:57,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b73836297/5138a796b0464480adbc3224d5cf89bc [2022-02-24 04:14:57,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:14:57,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:14:57,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:14:57,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:14:57,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:14:57,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:14:57" (1/1) ... [2022-02-24 04:14:57,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53894072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:57, skipping insertion in model container [2022-02-24 04:14:57,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:14:57" (1/1) ... [2022-02-24 04:14:57,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:14:57,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:14:58,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2022-02-24 04:14:58,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:14:58,048 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:14:58,130 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2022-02-24 04:14:58,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:14:58,141 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:14:58,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58 WrapperNode [2022-02-24 04:14:58,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:14:58,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:14:58,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:14:58,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:14:58,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58" (1/1) ... [2022-02-24 04:14:58,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58" (1/1) ... [2022-02-24 04:14:58,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58" (1/1) ... [2022-02-24 04:14:58,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58" (1/1) ... [2022-02-24 04:14:58,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58" (1/1) ... [2022-02-24 04:14:58,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58" (1/1) ... [2022-02-24 04:14:58,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58" (1/1) ... [2022-02-24 04:14:58,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:14:58,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:14:58,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:14:58,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:14:58,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58" (1/1) ... [2022-02-24 04:14:58,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:14:58,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:14:58,248 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) [2022-02-24 04:14:58,275 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 [2022-02-24 04:14:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:14:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:14:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:14:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 04:14:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 04:14:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-02-24 04:14:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:14:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 04:14:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 04:14:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 04:14:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 04:14:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 04:14:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-02-24 04:14:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-02-24 04:14:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-02-24 04:14:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-02-24 04:14:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 04:14:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-02-24 04:14:58,299 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 04:14:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 04:14:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:14:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:14:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:14:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 04:14:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:14:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 04:14:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-02-24 04:14:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 04:14:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 04:14:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 04:14:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 04:14:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:14:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 04:14:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:14:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:14:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:14:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:14:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:14:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:14:58,465 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:14:58,466 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:14:58,544 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:14:58,639 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-24 04:14:58,640 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-24 04:14:58,651 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:14:58,697 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 04:14:58,698 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 04:14:58,772 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:14:58,791 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 04:14:58,791 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 04:14:58,797 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:14:58,896 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-24 04:14:58,896 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-24 04:14:58,899 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:14:58,922 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-24 04:14:58,922 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-24 04:14:58,926 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:14:58,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 04:14:58,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 04:14:58,967 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:14:58,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:14:58,976 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-24 04:14:58,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:14:58 BoogieIcfgContainer [2022-02-24 04:14:58,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:14:58,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:14:58,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:14:58,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:14:58,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:14:57" (1/3) ... [2022-02-24 04:14:58,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5121464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:14:58, skipping insertion in model container [2022-02-24 04:14:58,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:14:58" (2/3) ... [2022-02-24 04:14:58,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5121464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:14:58, skipping insertion in model container [2022-02-24 04:14:58,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:14:58" (3/3) ... [2022-02-24 04:14:58,985 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2022-02-24 04:14:58,989 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:14:58,989 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:14:59,033 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:14:59,042 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-24 04:14:59,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:14:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 200 states have internal predecessors, (284), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-02-24 04:14:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 04:14:59,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:14:59,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:14:59,073 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:14:59,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:14:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1235546278, now seen corresponding path program 1 times [2022-02-24 04:14:59,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:14:59,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729659714] [2022-02-24 04:14:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:14:59,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:14:59,131 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:14:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:14:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:14:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:14:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:14:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:14:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:14:59,478 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:14:59,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729659714] [2022-02-24 04:14:59,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [729659714] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:14:59,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:14:59,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 04:14:59,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804125700] [2022-02-24 04:14:59,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:14:59,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 04:14:59,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:14:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 04:14:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 04:14:59,536 INFO L87 Difference]: Start difference. First operand has 240 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 200 states have internal predecessors, (284), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 04:15:00,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:00,255 INFO L93 Difference]: Finished difference Result 417 states and 628 transitions. [2022-02-24 04:15:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 04:15:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-02-24 04:15:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:00,269 INFO L225 Difference]: With dead ends: 417 [2022-02-24 04:15:00,269 INFO L226 Difference]: Without dead ends: 259 [2022-02-24 04:15:00,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 04:15:00,276 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 328 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:00,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 444 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 04:15:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-02-24 04:15:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2022-02-24 04:15:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 176 states have (on average 1.4943181818181819) internal successors, (263), 192 states have internal predecessors, (263), 39 states have call successors, (39), 17 states have call predecessors, (39), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-24 04:15:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2022-02-24 04:15:00,366 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2022-02-24 04:15:00,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:00,367 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2022-02-24 04:15:00,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 04:15:00,367 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2022-02-24 04:15:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-24 04:15:00,369 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:00,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:00,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:15:00,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:00,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:00,372 INFO L85 PathProgramCache]: Analyzing trace with hash -225403307, now seen corresponding path program 1 times [2022-02-24 04:15:00,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:00,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420553669] [2022-02-24 04:15:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:00,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:00,385 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:00,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:00,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:00,613 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:00,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420553669] [2022-02-24 04:15:00,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [420553669] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:00,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:00,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 04:15:00,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128253113] [2022-02-24 04:15:00,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:00,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 04:15:00,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:00,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 04:15:00,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 04:15:00,616 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:15:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:01,375 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2022-02-24 04:15:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 04:15:01,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-02-24 04:15:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:01,382 INFO L225 Difference]: With dead ends: 410 [2022-02-24 04:15:01,382 INFO L226 Difference]: Without dead ends: 349 [2022-02-24 04:15:01,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:15:01,389 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 386 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:01,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 476 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:01,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-02-24 04:15:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2022-02-24 04:15:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 239 states have (on average 1.393305439330544) internal successors, (333), 243 states have internal predecessors, (333), 38 states have call successors, (38), 23 states have call predecessors, (38), 26 states have return successors, (44), 40 states have call predecessors, (44), 29 states have call successors, (44) [2022-02-24 04:15:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2022-02-24 04:15:01,454 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2022-02-24 04:15:01,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:01,455 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2022-02-24 04:15:01,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:15:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2022-02-24 04:15:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-24 04:15:01,457 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:01,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:01,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 04:15:01,458 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash -809602478, now seen corresponding path program 1 times [2022-02-24 04:15:01,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:01,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53235199] [2022-02-24 04:15:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:01,462 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:01,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:01,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:01,608 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:01,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53235199] [2022-02-24 04:15:01,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [53235199] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:01,609 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:01,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 04:15:01,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865899721] [2022-02-24 04:15:01,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:01,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 04:15:01,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:01,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 04:15:01,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 04:15:01,611 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:15:02,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:02,177 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2022-02-24 04:15:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 04:15:02,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-02-24 04:15:02,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:02,180 INFO L225 Difference]: With dead ends: 487 [2022-02-24 04:15:02,180 INFO L226 Difference]: Without dead ends: 368 [2022-02-24 04:15:02,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:15:02,182 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 410 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:02,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 366 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 04:15:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-02-24 04:15:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2022-02-24 04:15:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 280 states have (on average 1.3857142857142857) internal successors, (388), 282 states have internal predecessors, (388), 34 states have call successors, (34), 23 states have call predecessors, (34), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-02-24 04:15:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2022-02-24 04:15:02,227 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2022-02-24 04:15:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:02,227 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2022-02-24 04:15:02,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:15:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2022-02-24 04:15:02,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-24 04:15:02,233 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:02,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:02,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 04:15:02,234 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:02,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:02,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1415760533, now seen corresponding path program 1 times [2022-02-24 04:15:02,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:02,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673901315] [2022-02-24 04:15:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:02,249 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:02,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:02,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:02,409 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:02,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673901315] [2022-02-24 04:15:02,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [673901315] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:02,409 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:02,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 04:15:02,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982038403] [2022-02-24 04:15:02,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:02,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 04:15:02,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 04:15:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 04:15:02,411 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:15:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:02,948 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2022-02-24 04:15:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 04:15:02,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-02-24 04:15:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:02,954 INFO L225 Difference]: With dead ends: 347 [2022-02-24 04:15:02,954 INFO L226 Difference]: Without dead ends: 343 [2022-02-24 04:15:02,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-24 04:15:02,955 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 189 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:02,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 393 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 04:15:02,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-24 04:15:02,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2022-02-24 04:15:02,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 280 states have (on average 1.3785714285714286) internal successors, (386), 281 states have internal predecessors, (386), 33 states have call successors, (33), 23 states have call predecessors, (33), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-02-24 04:15:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2022-02-24 04:15:02,986 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2022-02-24 04:15:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:02,986 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2022-02-24 04:15:02,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:15:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2022-02-24 04:15:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-24 04:15:02,988 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:02,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:02,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 04:15:02,988 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 605107567, now seen corresponding path program 1 times [2022-02-24 04:15:02,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:02,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725600432] [2022-02-24 04:15:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:02,992 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 04:15:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:03,120 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:03,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725600432] [2022-02-24 04:15:03,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1725600432] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:03,120 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:03,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:15:03,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515340915] [2022-02-24 04:15:03,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:03,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:15:03,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:03,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:15:03,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:15:03,122 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 04:15:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:03,900 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2022-02-24 04:15:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 04:15:03,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-02-24 04:15:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:03,903 INFO L225 Difference]: With dead ends: 394 [2022-02-24 04:15:03,903 INFO L226 Difference]: Without dead ends: 325 [2022-02-24 04:15:03,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:15:03,905 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 603 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:03,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 583 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:03,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-02-24 04:15:03,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2022-02-24 04:15:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 246 states have (on average 1.3699186991869918) internal successors, (337), 247 states have internal predecessors, (337), 30 states have call successors, (30), 21 states have call predecessors, (30), 27 states have return successors, (39), 36 states have call predecessors, (39), 24 states have call successors, (39) [2022-02-24 04:15:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2022-02-24 04:15:03,942 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2022-02-24 04:15:03,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:03,943 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2022-02-24 04:15:03,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 04:15:03,943 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2022-02-24 04:15:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-24 04:15:03,944 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:03,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:03,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 04:15:03,945 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash -447308474, now seen corresponding path program 1 times [2022-02-24 04:15:03,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:03,945 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373376867] [2022-02-24 04:15:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:03,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:03,947 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:04,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 04:15:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:04,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 04:15:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:04,235 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:04,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373376867] [2022-02-24 04:15:04,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1373376867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:04,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:04,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:15:04,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057051514] [2022-02-24 04:15:04,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:04,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:15:04,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:15:04,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:15:04,237 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:15:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:05,173 INFO L93 Difference]: Finished difference Result 334 states and 440 transitions. [2022-02-24 04:15:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:15:05,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-02-24 04:15:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:05,176 INFO L225 Difference]: With dead ends: 334 [2022-02-24 04:15:05,176 INFO L226 Difference]: Without dead ends: 325 [2022-02-24 04:15:05,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:15:05,177 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1079 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:05,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 500 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-02-24 04:15:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2022-02-24 04:15:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 260 states have (on average 1.3615384615384616) internal successors, (354), 260 states have internal predecessors, (354), 30 states have call successors, (30), 21 states have call predecessors, (30), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-02-24 04:15:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 425 transitions. [2022-02-24 04:15:05,216 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 425 transitions. Word has length 45 [2022-02-24 04:15:05,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:05,217 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 425 transitions. [2022-02-24 04:15:05,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:15:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 425 transitions. [2022-02-24 04:15:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-24 04:15:05,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:05,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:05,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 04:15:05,219 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:05,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:05,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1360970565, now seen corresponding path program 1 times [2022-02-24 04:15:05,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:05,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967280600] [2022-02-24 04:15:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:05,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:05,222 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:05,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:05,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:05,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:05,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 04:15:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:05,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 04:15:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:05,437 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:05,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967280600] [2022-02-24 04:15:05,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [967280600] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:05,437 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:05,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:15:05,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429593258] [2022-02-24 04:15:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:05,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:15:05,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:05,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:15:05,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:15:05,439 INFO L87 Difference]: Start difference. First operand 320 states and 425 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:15:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:06,317 INFO L93 Difference]: Finished difference Result 330 states and 433 transitions. [2022-02-24 04:15:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:15:06,317 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-02-24 04:15:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:06,320 INFO L225 Difference]: With dead ends: 330 [2022-02-24 04:15:06,320 INFO L226 Difference]: Without dead ends: 325 [2022-02-24 04:15:06,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:15:06,323 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 783 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:06,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 423 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-02-24 04:15:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2022-02-24 04:15:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 260 states have (on average 1.3576923076923078) internal successors, (353), 260 states have internal predecessors, (353), 30 states have call successors, (30), 21 states have call predecessors, (30), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-02-24 04:15:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 424 transitions. [2022-02-24 04:15:06,370 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 424 transitions. Word has length 46 [2022-02-24 04:15:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:06,371 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 424 transitions. [2022-02-24 04:15:06,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:15:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 424 transitions. [2022-02-24 04:15:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-24 04:15:06,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:06,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:06,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 04:15:06,374 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:06,375 INFO L85 PathProgramCache]: Analyzing trace with hash 548356508, now seen corresponding path program 1 times [2022-02-24 04:15:06,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:06,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618394546] [2022-02-24 04:15:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:06,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:06,377 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:06,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:06,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:06,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 04:15:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 04:15:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:06,525 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:06,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618394546] [2022-02-24 04:15:06,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1618394546] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:06,526 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:06,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:15:06,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788740109] [2022-02-24 04:15:06,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:06,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:15:06,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:15:06,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:15:06,528 INFO L87 Difference]: Start difference. First operand 320 states and 424 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:06,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:06,888 INFO L93 Difference]: Finished difference Result 338 states and 446 transitions. [2022-02-24 04:15:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 04:15:06,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-02-24 04:15:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:06,892 INFO L225 Difference]: With dead ends: 338 [2022-02-24 04:15:06,892 INFO L226 Difference]: Without dead ends: 272 [2022-02-24 04:15:06,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:15:06,893 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 581 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:06,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 356 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 04:15:06,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-02-24 04:15:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 242. [2022-02-24 04:15:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 198 states have (on average 1.378787878787879) internal successors, (273), 201 states have internal predecessors, (273), 27 states have call successors, (27), 19 states have call predecessors, (27), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-24 04:15:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2022-02-24 04:15:06,929 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 47 [2022-02-24 04:15:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:06,929 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2022-02-24 04:15:06,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2022-02-24 04:15:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 04:15:06,931 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:06,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:06,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 04:15:06,932 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 916659597, now seen corresponding path program 1 times [2022-02-24 04:15:06,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:06,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672161208] [2022-02-24 04:15:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:06,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:06,936 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-24 04:15:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:15:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:15:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:07,091 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:07,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672161208] [2022-02-24 04:15:07,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [672161208] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:07,091 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:07,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:15:07,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275417972] [2022-02-24 04:15:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:07,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:15:07,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:07,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:15:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:15:07,093 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:07,660 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2022-02-24 04:15:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 04:15:07,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2022-02-24 04:15:07,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:07,661 INFO L225 Difference]: With dead ends: 270 [2022-02-24 04:15:07,662 INFO L226 Difference]: Without dead ends: 240 [2022-02-24 04:15:07,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:15:07,662 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 339 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:07,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 506 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 04:15:07,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-02-24 04:15:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-02-24 04:15:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 197 states have (on average 1.3705583756345177) internal successors, (270), 199 states have internal predecessors, (270), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-24 04:15:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2022-02-24 04:15:07,711 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2022-02-24 04:15:07,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:07,712 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2022-02-24 04:15:07,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2022-02-24 04:15:07,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-24 04:15:07,713 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:07,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:07,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 04:15:07,713 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:07,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:07,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1556296422, now seen corresponding path program 1 times [2022-02-24 04:15:07,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:07,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227775299] [2022-02-24 04:15:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:07,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:07,716 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 04:15:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:15:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:07,893 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:07,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227775299] [2022-02-24 04:15:07,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1227775299] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:07,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:07,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:15:07,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834495591] [2022-02-24 04:15:07,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:07,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:15:07,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:07,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:15:07,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:15:07,895 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 04:15:08,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:08,691 INFO L93 Difference]: Finished difference Result 284 states and 365 transitions. [2022-02-24 04:15:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 04:15:08,692 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-02-24 04:15:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:08,694 INFO L225 Difference]: With dead ends: 284 [2022-02-24 04:15:08,694 INFO L226 Difference]: Without dead ends: 243 [2022-02-24 04:15:08,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-02-24 04:15:08,695 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 655 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:08,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 593 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 04:15:08,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-02-24 04:15:08,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2022-02-24 04:15:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 199 states have internal predecessors, (268), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-24 04:15:08,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2022-02-24 04:15:08,726 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 51 [2022-02-24 04:15:08,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:08,727 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2022-02-24 04:15:08,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 04:15:08,727 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2022-02-24 04:15:08,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 04:15:08,728 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:08,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:08,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 04:15:08,729 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash 460482069, now seen corresponding path program 1 times [2022-02-24 04:15:08,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:08,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283752031] [2022-02-24 04:15:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:08,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:08,731 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:08,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:08,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 04:15:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:15:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:08,930 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:08,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283752031] [2022-02-24 04:15:08,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [283752031] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:08,930 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:08,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:15:08,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664569992] [2022-02-24 04:15:08,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:08,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:15:08,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:08,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:15:08,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:15:08,931 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:15:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:09,781 INFO L93 Difference]: Finished difference Result 272 states and 349 transitions. [2022-02-24 04:15:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:15:09,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-02-24 04:15:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:09,784 INFO L225 Difference]: With dead ends: 272 [2022-02-24 04:15:09,784 INFO L226 Difference]: Without dead ends: 253 [2022-02-24 04:15:09,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-02-24 04:15:09,785 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 655 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:09,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 562 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:09,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-02-24 04:15:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 243. [2022-02-24 04:15:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 200 states have (on average 1.36) internal successors, (272), 202 states have internal predecessors, (272), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-24 04:15:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 319 transitions. [2022-02-24 04:15:09,822 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 319 transitions. Word has length 53 [2022-02-24 04:15:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:09,822 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 319 transitions. [2022-02-24 04:15:09,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:15:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 319 transitions. [2022-02-24 04:15:09,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 04:15:09,823 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:09,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:09,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 04:15:09,824 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1533662637, now seen corresponding path program 1 times [2022-02-24 04:15:09,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:09,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390141530] [2022-02-24 04:15:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:09,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:09,826 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:09,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:09,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 04:15:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:09,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:15:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:10,001 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:10,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390141530] [2022-02-24 04:15:10,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [390141530] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:10,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:10,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:15:10,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402859754] [2022-02-24 04:15:10,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:10,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:15:10,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:15:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:15:10,003 INFO L87 Difference]: Start difference. First operand 243 states and 319 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 04:15:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:10,854 INFO L93 Difference]: Finished difference Result 284 states and 365 transitions. [2022-02-24 04:15:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:15:10,854 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2022-02-24 04:15:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:10,856 INFO L225 Difference]: With dead ends: 284 [2022-02-24 04:15:10,856 INFO L226 Difference]: Without dead ends: 240 [2022-02-24 04:15:10,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:15:10,857 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 451 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:10,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 572 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-02-24 04:15:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2022-02-24 04:15:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 195 states have (on average 1.3435897435897435) internal successors, (262), 197 states have internal predecessors, (262), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-24 04:15:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 309 transitions. [2022-02-24 04:15:10,897 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 309 transitions. Word has length 53 [2022-02-24 04:15:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:10,897 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 309 transitions. [2022-02-24 04:15:10,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 04:15:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 309 transitions. [2022-02-24 04:15:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 04:15:10,898 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:10,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:10,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 04:15:10,899 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:10,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1386969835, now seen corresponding path program 1 times [2022-02-24 04:15:10,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:10,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548393449] [2022-02-24 04:15:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:10,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:10,901 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 04:15:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:15:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:11,066 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:11,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548393449] [2022-02-24 04:15:11,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [548393449] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:11,067 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:11,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:15:11,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752519169] [2022-02-24 04:15:11,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:11,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:15:11,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:15:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:15:11,068 INFO L87 Difference]: Start difference. First operand 238 states and 309 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:11,745 INFO L93 Difference]: Finished difference Result 250 states and 321 transitions. [2022-02-24 04:15:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 04:15:11,745 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2022-02-24 04:15:11,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:11,746 INFO L225 Difference]: With dead ends: 250 [2022-02-24 04:15:11,746 INFO L226 Difference]: Without dead ends: 210 [2022-02-24 04:15:11,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:15:11,747 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 433 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:11,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 905 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-02-24 04:15:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-02-24 04:15:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.345029239766082) internal successors, (230), 173 states have internal predecessors, (230), 24 states have call successors, (24), 17 states have call predecessors, (24), 14 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2022-02-24 04:15:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 273 transitions. [2022-02-24 04:15:11,774 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 273 transitions. Word has length 53 [2022-02-24 04:15:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:11,775 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 273 transitions. [2022-02-24 04:15:11,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:11,775 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 273 transitions. [2022-02-24 04:15:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 04:15:11,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:11,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:11,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 04:15:11,776 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:11,776 INFO L85 PathProgramCache]: Analyzing trace with hash -438914869, now seen corresponding path program 1 times [2022-02-24 04:15:11,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:11,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087812643] [2022-02-24 04:15:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:11,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:11,778 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:15:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:11,965 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:11,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087812643] [2022-02-24 04:15:11,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1087812643] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:11,966 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:11,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 04:15:11,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607012715] [2022-02-24 04:15:11,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:11,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 04:15:11,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:11,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 04:15:11,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:15:11,967 INFO L87 Difference]: Start difference. First operand 210 states and 273 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:12,676 INFO L93 Difference]: Finished difference Result 226 states and 289 transitions. [2022-02-24 04:15:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:15:12,676 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-02-24 04:15:12,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:12,677 INFO L225 Difference]: With dead ends: 226 [2022-02-24 04:15:12,677 INFO L226 Difference]: Without dead ends: 205 [2022-02-24 04:15:12,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:15:12,678 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 366 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:12,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 840 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-02-24 04:15:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-02-24 04:15:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 167 states have (on average 1.347305389221557) internal successors, (225), 169 states have internal predecessors, (225), 23 states have call successors, (23), 17 states have call predecessors, (23), 14 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-02-24 04:15:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 266 transitions. [2022-02-24 04:15:12,710 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 266 transitions. Word has length 54 [2022-02-24 04:15:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:12,711 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 266 transitions. [2022-02-24 04:15:12,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 266 transitions. [2022-02-24 04:15:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 04:15:12,712 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:12,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:12,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 04:15:12,712 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:12,712 INFO L85 PathProgramCache]: Analyzing trace with hash 432963036, now seen corresponding path program 1 times [2022-02-24 04:15:12,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:12,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246203640] [2022-02-24 04:15:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:12,714 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:12,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 04:15:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:12,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:15:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:15:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:12,876 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:12,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246203640] [2022-02-24 04:15:12,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [246203640] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:12,876 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:12,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:15:12,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973682111] [2022-02-24 04:15:12,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:12,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:15:12,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:12,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:15:12,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:15:12,878 INFO L87 Difference]: Start difference. First operand 205 states and 266 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:13,430 INFO L93 Difference]: Finished difference Result 263 states and 337 transitions. [2022-02-24 04:15:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 04:15:13,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-02-24 04:15:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:13,432 INFO L225 Difference]: With dead ends: 263 [2022-02-24 04:15:13,432 INFO L226 Difference]: Without dead ends: 222 [2022-02-24 04:15:13,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:15:13,433 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 273 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:13,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 671 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 04:15:13,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-02-24 04:15:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2022-02-24 04:15:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.3391812865497077) internal successors, (229), 173 states have internal predecessors, (229), 23 states have call successors, (23), 17 states have call predecessors, (23), 15 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2022-02-24 04:15:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 271 transitions. [2022-02-24 04:15:13,464 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 271 transitions. Word has length 57 [2022-02-24 04:15:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:13,465 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 271 transitions. [2022-02-24 04:15:13,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:13,465 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 271 transitions. [2022-02-24 04:15:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 04:15:13,465 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:13,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:13,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 04:15:13,466 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:13,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1039954733, now seen corresponding path program 1 times [2022-02-24 04:15:13,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:13,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782740737] [2022-02-24 04:15:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:13,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:13,468 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 04:15:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:15:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:15:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:13,658 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:13,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782740737] [2022-02-24 04:15:13,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [782740737] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:13,658 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:13,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:15:13,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566987060] [2022-02-24 04:15:13,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:13,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:15:13,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:13,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:15:13,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:15:13,659 INFO L87 Difference]: Start difference. First operand 210 states and 271 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:14,346 INFO L93 Difference]: Finished difference Result 230 states and 294 transitions. [2022-02-24 04:15:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 04:15:14,347 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-02-24 04:15:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:14,348 INFO L225 Difference]: With dead ends: 230 [2022-02-24 04:15:14,348 INFO L226 Difference]: Without dead ends: 223 [2022-02-24 04:15:14,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:15:14,349 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 200 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:14,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 653 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 04:15:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-02-24 04:15:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 211. [2022-02-24 04:15:14,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 172 states have (on average 1.3372093023255813) internal successors, (230), 174 states have internal predecessors, (230), 23 states have call successors, (23), 17 states have call predecessors, (23), 15 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2022-02-24 04:15:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 272 transitions. [2022-02-24 04:15:14,382 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 272 transitions. Word has length 57 [2022-02-24 04:15:14,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:14,382 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 272 transitions. [2022-02-24 04:15:14,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 272 transitions. [2022-02-24 04:15:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 04:15:14,383 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:14,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:14,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 04:15:14,383 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:14,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:14,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2132592656, now seen corresponding path program 1 times [2022-02-24 04:15:14,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:14,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162340145] [2022-02-24 04:15:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:14,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:14,386 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:14,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:14,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 04:15:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 04:15:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:14,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:15:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:14,574 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:14,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162340145] [2022-02-24 04:15:14,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [162340145] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:14,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:14,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 04:15:14,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543665420] [2022-02-24 04:15:14,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:14,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 04:15:14,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:14,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 04:15:14,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:15:14,576 INFO L87 Difference]: Start difference. First operand 211 states and 272 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:15,257 INFO L93 Difference]: Finished difference Result 223 states and 284 transitions. [2022-02-24 04:15:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 04:15:15,258 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-02-24 04:15:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:15,259 INFO L225 Difference]: With dead ends: 223 [2022-02-24 04:15:15,259 INFO L226 Difference]: Without dead ends: 209 [2022-02-24 04:15:15,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:15:15,260 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 358 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:15,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 916 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:15,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-02-24 04:15:15,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-02-24 04:15:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 171 states have (on average 1.3333333333333333) internal successors, (228), 173 states have internal predecessors, (228), 22 states have call successors, (22), 17 states have call predecessors, (22), 15 states have return successors, (18), 18 states have call predecessors, (18), 16 states have call successors, (18) [2022-02-24 04:15:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 268 transitions. [2022-02-24 04:15:15,291 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 268 transitions. Word has length 56 [2022-02-24 04:15:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:15,292 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 268 transitions. [2022-02-24 04:15:15,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 268 transitions. [2022-02-24 04:15:15,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 04:15:15,292 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:15,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:15,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 04:15:15,293 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:15,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1221590652, now seen corresponding path program 1 times [2022-02-24 04:15:15,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:15,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793368269] [2022-02-24 04:15:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:15,295 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:15,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:15:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:15:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:15,486 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:15,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793368269] [2022-02-24 04:15:15,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1793368269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:15,487 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:15,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:15:15,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099039720] [2022-02-24 04:15:15,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:15,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:15:15,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:15:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:15:15,488 INFO L87 Difference]: Start difference. First operand 209 states and 268 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:16,342 INFO L93 Difference]: Finished difference Result 266 states and 329 transitions. [2022-02-24 04:15:16,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 04:15:16,342 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-02-24 04:15:16,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:16,343 INFO L225 Difference]: With dead ends: 266 [2022-02-24 04:15:16,343 INFO L226 Difference]: Without dead ends: 249 [2022-02-24 04:15:16,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-02-24 04:15:16,344 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 629 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:16,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 612 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:16,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-24 04:15:16,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 215. [2022-02-24 04:15:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 176 states have (on average 1.3238636363636365) internal successors, (233), 179 states have internal predecessors, (233), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (20), 18 states have call predecessors, (20), 16 states have call successors, (20) [2022-02-24 04:15:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 275 transitions. [2022-02-24 04:15:16,380 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 275 transitions. Word has length 55 [2022-02-24 04:15:16,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:16,380 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 275 transitions. [2022-02-24 04:15:16,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:16,380 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 275 transitions. [2022-02-24 04:15:16,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 04:15:16,381 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:16,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:16,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 04:15:16,381 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2050869943, now seen corresponding path program 1 times [2022-02-24 04:15:16,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:16,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906725807] [2022-02-24 04:15:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:16,384 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:15:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:15:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:16,558 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:16,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906725807] [2022-02-24 04:15:16,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1906725807] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:16,559 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:16,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 04:15:16,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234643728] [2022-02-24 04:15:16,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:16,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 04:15:16,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 04:15:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:15:16,560 INFO L87 Difference]: Start difference. First operand 215 states and 275 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:17,231 INFO L93 Difference]: Finished difference Result 231 states and 291 transitions. [2022-02-24 04:15:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:15:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-02-24 04:15:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:17,233 INFO L225 Difference]: With dead ends: 231 [2022-02-24 04:15:17,233 INFO L226 Difference]: Without dead ends: 193 [2022-02-24 04:15:17,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:15:17,234 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 242 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:17,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 824 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 04:15:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-02-24 04:15:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-02-24 04:15:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 158 states have internal predecessors, (193), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (18), 17 states have call predecessors, (18), 15 states have call successors, (18) [2022-02-24 04:15:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 232 transitions. [2022-02-24 04:15:17,287 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 232 transitions. Word has length 55 [2022-02-24 04:15:17,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:17,287 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 232 transitions. [2022-02-24 04:15:17,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:15:17,287 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 232 transitions. [2022-02-24 04:15:17,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 04:15:17,288 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:17,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:17,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 04:15:17,289 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:17,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1918234721, now seen corresponding path program 1 times [2022-02-24 04:15:17,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:17,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417691366] [2022-02-24 04:15:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:17,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:17,292 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:17,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:15:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:15:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:15:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:17,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 04:15:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:15:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:15:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:15:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:15:17,492 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:15:17,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417691366] [2022-02-24 04:15:17,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [417691366] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:15:17,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:15:17,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:15:17,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133288389] [2022-02-24 04:15:17,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:15:17,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:15:17,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:15:17,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:15:17,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:15:17,494 INFO L87 Difference]: Start difference. First operand 193 states and 232 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:17,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:15:17,862 INFO L93 Difference]: Finished difference Result 229 states and 273 transitions. [2022-02-24 04:15:17,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 04:15:17,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-02-24 04:15:17,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:15:17,863 INFO L225 Difference]: With dead ends: 229 [2022-02-24 04:15:17,863 INFO L226 Difference]: Without dead ends: 187 [2022-02-24 04:15:17,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:15:17,864 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 193 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:15:17,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 533 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 04:15:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-02-24 04:15:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-02-24 04:15:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 149 states have (on average 1.2348993288590604) internal successors, (184), 152 states have internal predecessors, (184), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (18), 17 states have call predecessors, (18), 15 states have call successors, (18) [2022-02-24 04:15:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2022-02-24 04:15:17,890 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 58 [2022-02-24 04:15:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:15:17,890 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2022-02-24 04:15:17,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:15:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2022-02-24 04:15:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 04:15:17,891 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:15:17,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:17,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 04:15:17,892 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:15:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:15:17,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1199488421, now seen corresponding path program 1 times [2022-02-24 04:15:17,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:15:17,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170783240] [2022-02-24 04:15:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:15:17,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:15:17,894 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:15:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 04:15:17,906 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-24 04:15:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 04:15:17,957 INFO L138 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-24 04:15:17,958 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-24 04:15:17,960 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 04:15:17,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 04:15:17,965 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:15:17,967 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 04:15:17,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:15:17 BoogieIcfgContainer [2022-02-24 04:15:17,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 04:15:17,992 INFO L158 Benchmark]: Toolchain (without parser) took 20241.99ms. Allocated memory was 190.8MB in the beginning and 481.3MB in the end (delta: 290.5MB). Free memory was 134.0MB in the beginning and 323.6MB in the end (delta: -189.5MB). Peak memory consumption was 101.7MB. Max. memory is 8.0GB. [2022-02-24 04:15:17,992 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 04:15:17,992 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.27ms. Allocated memory was 190.8MB in the beginning and 277.9MB in the end (delta: 87.0MB). Free memory was 133.9MB in the beginning and 241.4MB in the end (delta: -107.5MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-02-24 04:15:17,992 INFO L158 Benchmark]: Boogie Preprocessor took 62.76ms. Allocated memory is still 277.9MB. Free memory was 241.4MB in the beginning and 238.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-24 04:15:17,992 INFO L158 Benchmark]: RCFGBuilder took 771.53ms. Allocated memory is still 277.9MB. Free memory was 238.8MB in the beginning and 204.7MB in the end (delta: 34.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2022-02-24 04:15:17,996 INFO L158 Benchmark]: TraceAbstraction took 19011.58ms. Allocated memory was 277.9MB in the beginning and 481.3MB in the end (delta: 203.4MB). Free memory was 204.2MB in the beginning and 323.6MB in the end (delta: -119.3MB). Peak memory consumption was 85.1MB. Max. memory is 8.0GB. [2022-02-24 04:15:17,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 390.27ms. Allocated memory was 190.8MB in the beginning and 277.9MB in the end (delta: 87.0MB). Free memory was 133.9MB in the beginning and 241.4MB in the end (delta: -107.5MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.76ms. Allocated memory is still 277.9MB. Free memory was 241.4MB in the beginning and 238.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 771.53ms. Allocated memory is still 277.9MB. Free memory was 238.8MB in the beginning and 204.7MB in the end (delta: 34.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 19011.58ms. Allocated memory was 277.9MB in the beginning and 481.3MB in the end (delta: 203.4MB). Free memory was 204.2MB in the beginning and 323.6MB in the end (delta: -119.3MB). Peak memory consumption was 85.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1013]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int KernelMode ; [L24] int Executive ; [L25] int DevicePowerState ; [L26] int s ; [L27] int UNLOADED ; [L28] int NP ; [L29] int DC ; [L30] int SKIP1 ; [L31] int SKIP2 ; [L32] int MPR1 ; [L33] int MPR3 ; [L34] int IPC ; [L35] int pended ; [L36] int compFptr ; [L37] int compRegistered ; [L38] int lowerDriverReturn ; [L39] int setEventCalled ; [L40] int customIrp ; [L41] int myStatus ; [L294] int status ; [L295] int irp = __VERIFIER_nondet_int() ; [L296] int pirp ; [L297] int pirp__IoStatus__Status ; [L298] int irp_choice = __VERIFIER_nondet_int() ; [L299] int devobj = __VERIFIER_nondet_int() ; [L300] int __cil_tmp8 ; [L302] KernelMode = 0 [L303] Executive = 0 [L304] DevicePowerState = 1 [L305] s = 0 [L306] UNLOADED = 0 [L307] NP = 0 [L308] DC = 0 [L309] SKIP1 = 0 [L310] SKIP2 = 0 [L311] MPR1 = 0 [L312] MPR3 = 0 [L313] IPC = 0 [L314] pended = 0 [L315] compFptr = 0 [L316] compRegistered = 0 [L317] lowerDriverReturn = 0 [L318] setEventCalled = 0 [L319] customIrp = 0 [L320] myStatus = 0 [L324] status = 0 [L325] pirp = irp [L326] CALL _BLAST_init() [L61] UNLOADED = 0 [L62] NP = 1 [L63] DC = 2 [L64] SKIP1 = 3 [L65] SKIP2 = 4 [L66] MPR1 = 5 [L67] MPR3 = 6 [L68] IPC = 7 [L69] s = UNLOADED [L70] pended = 0 [L71] compFptr = 0 [L72] compRegistered = 0 [L73] lowerDriverReturn = 0 [L74] setEventCalled = 0 [L75] customIrp = 0 [L326] RET _BLAST_init() [L328] COND TRUE status >= 0 [L329] s = NP [L330] customIrp = 0 [L331] setEventCalled = customIrp [L332] lowerDriverReturn = setEventCalled [L333] compRegistered = lowerDriverReturn [L334] pended = compRegistered [L335] pirp__IoStatus__Status = 0 [L336] myStatus = 0 [L337] COND FALSE !(irp_choice == 0) [L342] CALL stub_driver_init() [L47] s = NP [L48] pended = 0 [L49] compFptr = 0 [L50] compRegistered = 0 [L51] lowerDriverReturn = 0 [L52] setEventCalled = 0 [L53] customIrp = 0 [L342] RET stub_driver_init() [L345] COND FALSE !(status < 0) [L349] int tmp_ndt_1; [L350] tmp_ndt_1 = __VERIFIER_nondet_int() [L351] COND FALSE !(tmp_ndt_1 == 0) [L354] int tmp_ndt_2; [L355] tmp_ndt_2 = __VERIFIER_nondet_int() [L356] COND FALSE !(tmp_ndt_2 == 1) [L359] int tmp_ndt_3; [L360] tmp_ndt_3 = __VERIFIER_nondet_int() [L361] COND TRUE tmp_ndt_3 == 3 [L388] CALL, EXPR KbFilter_PnP(devobj, pirp) [L80] int devExt ; [L81] int irpStack ; [L82] int status ; [L83] int event = __VERIFIER_nondet_int() ; [L84] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L85] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L86] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L87] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L88] int devExt__Started ; [L89] int devExt__Removed ; [L90] int devExt__SurpriseRemoved ; [L91] int Irp__IoStatus__Status ; [L92] int Irp__IoStatus__Information ; [L93] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L94] int irpSp ; [L95] int nextIrpSp ; [L96] int nextIrpSp__Control ; [L97] int irpSp___0 ; [L98] int irpSp__Context ; [L99] int irpSp__Control ; [L100] long __cil_tmp23 ; [L103] status = 0 [L104] devExt = DeviceObject__DeviceExtension [L105] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L106] COND FALSE !(irpStack__MinorFunction == 0) [L109] COND FALSE !(irpStack__MinorFunction == 23) [L112] COND TRUE irpStack__MinorFunction == 2 [L236] devExt__Removed = 1 [L237] COND TRUE s == NP [L238] s = SKIP1 [L245] Irp__CurrentLocation ++ [L246] Irp__Tail__Overlay__CurrentStackLocation ++ [L247] CALL IofCallDriver(devExt__TopOfStack, Irp) [L483] int returnVal2 ; [L484] int compRetStatus ; [L485] int lcontext = __VERIFIER_nondet_int() ; [L486] long long __cil_tmp7 ; [L489] COND FALSE !(\read(compRegistered)) [L502] int tmp_ndt_6; [L503] tmp_ndt_6 = __VERIFIER_nondet_int() [L504] COND FALSE !(tmp_ndt_6 == 0) [L507] int tmp_ndt_7; [L508] tmp_ndt_7 = __VERIFIER_nondet_int() [L509] COND TRUE tmp_ndt_7 == 1 [L518] returnVal2 = -1073741823 [L528] COND FALSE !(s == NP) [L532] COND FALSE !(s == MPR1) [L541] COND TRUE s == SKIP1 [L542] s = SKIP2 [L543] lowerDriverReturn = returnVal2 [L551] return (returnVal2); [L247] RET IofCallDriver(devExt__TopOfStack, Irp) [L248] status = 0 [L290] return (status); [L388] RET, EXPR KbFilter_PnP(devobj, pirp) [L388] status = KbFilter_PnP(devobj, pirp) [L412] COND FALSE !(pended == 1) [L420] COND FALSE !(pended == 1) [L428] COND TRUE s != UNLOADED [L429] COND TRUE status != -1 [L430] COND FALSE !(s != SKIP2) [L440] COND FALSE !(pended == 1) [L447] COND FALSE !(s == DC) [L452] COND TRUE status != lowerDriverReturn [L453] CALL errorFn() [L1013] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 19 procedures, 243 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.9s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9173 SdHoareTripleChecker+Valid, 10.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9153 mSDsluCounter, 11728 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6852 mSDsCounter, 1761 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15221 IncrementalHoareTripleChecker+Invalid, 16982 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1761 mSolverCounterUnsat, 4876 mSDtfsCounter, 15221 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 231 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-24 04:15:18,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...