/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 00:38:08,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 00:38:08,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 00:38:08,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 00:38:08,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 00:38:08,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 00:38:08,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 00:38:08,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 00:38:08,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 00:38:08,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 00:38:08,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 00:38:08,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 00:38:08,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 00:38:08,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 00:38:08,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 00:38:08,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 00:38:08,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 00:38:08,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 00:38:08,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 00:38:08,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 00:38:08,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 00:38:08,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 00:38:08,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 00:38:08,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 00:38:08,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-15 00:38:08,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-15 00:38:08,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-15 00:38:08,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-15 00:38:08,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-15 00:38:08,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-15 00:38:08,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-15 00:38:08,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-15 00:38:08,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-15 00:38:08,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-15 00:38:08,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-15 00:38:08,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-15 00:38:08,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-15 00:38:08,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-15 00:38:08,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 00:38:08,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 00:38:08,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 00:38:08,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-15 00:38:08,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 00:38:08,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 00:38:08,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 00:38:08,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 00:38:08,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 00:38:08,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 00:38:08,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 00:38:08,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 00:38:08,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 00:38:08,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 00:38:08,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 00:38:08,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 00:38:08,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 00:38:08,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 00:38:08,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 00:38:08,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 00:38:08,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 00:38:08,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 00:38:08,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:38:08,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 00:38:08,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 00:38:08,879 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-15 00:38:08,880 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 00:38:09,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 00:38:09,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 00:38:09,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 00:38:09,063 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 00:38:09,064 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 00:38:09,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-02-15 00:38:09,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80aa12ce/ebfba8a0291c4b39a0bde17e51ea9ada/FLAG89c3cd848 [2022-02-15 00:38:09,540 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 00:38:09,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-02-15 00:38:09,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80aa12ce/ebfba8a0291c4b39a0bde17e51ea9ada/FLAG89c3cd848 [2022-02-15 00:38:09,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80aa12ce/ebfba8a0291c4b39a0bde17e51ea9ada [2022-02-15 00:38:09,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 00:38:09,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 00:38:09,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 00:38:09,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 00:38:09,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 00:38:09,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57edf5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09, skipping insertion in model container [2022-02-15 00:38:09,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 00:38:09,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 00:38:09,784 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-1.c[29620,29633] [2022-02-15 00:38:09,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:38:09,791 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 00:38:09,837 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-1.c[29620,29633] [2022-02-15 00:38:09,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:38:09,849 INFO L208 MainTranslator]: Completed translation [2022-02-15 00:38:09,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09 WrapperNode [2022-02-15 00:38:09,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 00:38:09,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 00:38:09,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 00:38:09,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 00:38:09,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 00:38:09,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 00:38:09,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 00:38:09,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 00:38:09,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09" (1/1) ... [2022-02-15 00:38:09,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:38:09,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:38:09,931 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) [2022-02-15 00:38:09,935 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 [2022-02-15 00:38:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 00:38:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 00:38:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 00:38:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-15 00:38:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-15 00:38:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-02-15 00:38:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 00:38:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-02-15 00:38:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-15 00:38:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 00:38:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-02-15 00:38:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 00:38:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 00:38:10,080 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 00:38:10,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 00:38:10,145 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:10,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-15 00:38:10,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-15 00:38:10,220 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:10,255 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 00:38:10,255 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 00:38:10,330 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:10,347 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-15 00:38:10,347 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-15 00:38:10,351 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:10,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-15 00:38:10,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-15 00:38:10,434 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:10,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-15 00:38:10,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-15 00:38:10,452 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:10,474 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 00:38:10,474 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 00:38:10,491 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 00:38:10,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 00:38:10,498 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 00:38:10,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:38:10 BoogieIcfgContainer [2022-02-15 00:38:10,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 00:38:10,500 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-15 00:38:10,500 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-15 00:38:10,503 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-15 00:38:10,505 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:38:10" (1/1) ... [2022-02-15 00:38:10,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:38:10 BasicIcfg [2022-02-15 00:38:10,536 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-15 00:38:10,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 00:38:10,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 00:38:10,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 00:38:10,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:38:09" (1/4) ... [2022-02-15 00:38:10,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d9b60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:38:10, skipping insertion in model container [2022-02-15 00:38:10,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:09" (2/4) ... [2022-02-15 00:38:10,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d9b60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:38:10, skipping insertion in model container [2022-02-15 00:38:10,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:38:10" (3/4) ... [2022-02-15 00:38:10,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d9b60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:38:10, skipping insertion in model container [2022-02-15 00:38:10,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:38:10" (4/4) ... [2022-02-15 00:38:10,542 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.cJordan [2022-02-15 00:38:10,545 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-15 00:38:10,545 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 00:38:10,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 00:38:10,577 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, 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=FAST_UPR [2022-02-15 00:38:10,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 00:38:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 199 states have internal predecessors, (284), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-02-15 00:38:10,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 00:38:10,610 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:10,611 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] [2022-02-15 00:38:10,611 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:10,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:10,614 INFO L85 PathProgramCache]: Analyzing trace with hash 685042341, now seen corresponding path program 1 times [2022-02-15 00:38:10,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:10,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618613938] [2022-02-15 00:38:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:10,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:10,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:10,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618613938] [2022-02-15 00:38:10,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618613938] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:10,892 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:10,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 00:38:10,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041183603] [2022-02-15 00:38:10,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:10,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 00:38:10,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:10,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 00:38:10,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:38:10,924 INFO L87 Difference]: Start difference. First operand has 239 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 199 states have internal predecessors, (284), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) 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) [2022-02-15 00:38:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:11,574 INFO L93 Difference]: Finished difference Result 267 states and 384 transitions. [2022-02-15 00:38:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 00:38:11,576 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 [2022-02-15 00:38:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:11,589 INFO L225 Difference]: With dead ends: 267 [2022-02-15 00:38:11,589 INFO L226 Difference]: Without dead ends: 256 [2022-02-15 00:38:11,590 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 [2022-02-15 00:38:11,594 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 173 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:11,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 446 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 00:38:11,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-02-15 00:38:11,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 228. [2022-02-15 00:38:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 174 states have (on average 1.4942528735632183) internal successors, (260), 189 states have internal predecessors, (260), 38 states have call successors, (38), 17 states have call predecessors, (38), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-15 00:38:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 322 transitions. [2022-02-15 00:38:11,635 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 322 transitions. Word has length 20 [2022-02-15 00:38:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:11,635 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 322 transitions. [2022-02-15 00:38:11,636 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) [2022-02-15 00:38:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 322 transitions. [2022-02-15 00:38:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 00:38:11,637 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:11,637 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] [2022-02-15 00:38:11,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 00:38:11,637 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1276904425, now seen corresponding path program 1 times [2022-02-15 00:38:11,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:11,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707419446] [2022-02-15 00:38:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:11,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:11,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707419446] [2022-02-15 00:38:11,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707419446] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:11,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:11,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:38:11,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987234307] [2022-02-15 00:38:11,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:11,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:38:11,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:38:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:38:11,831 INFO L87 Difference]: Start difference. First operand 228 states and 322 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) [2022-02-15 00:38:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:12,264 INFO L93 Difference]: Finished difference Result 344 states and 470 transitions. [2022-02-15 00:38:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 00:38:12,265 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 [2022-02-15 00:38:12,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:12,266 INFO L225 Difference]: With dead ends: 344 [2022-02-15 00:38:12,267 INFO L226 Difference]: Without dead ends: 343 [2022-02-15 00:38:12,267 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 [2022-02-15 00:38:12,268 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 533 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:12,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 459 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 00:38:12,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-15 00:38:12,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 301. [2022-02-15 00:38:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 237 states have (on average 1.3924050632911393) internal successors, (330), 240 states have internal predecessors, (330), 37 states have call successors, (37), 23 states have call predecessors, (37), 26 states have return successors, (44), 40 states have call predecessors, (44), 29 states have call successors, (44) [2022-02-15 00:38:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 411 transitions. [2022-02-15 00:38:12,283 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 411 transitions. Word has length 28 [2022-02-15 00:38:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:12,283 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 411 transitions. [2022-02-15 00:38:12,283 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) [2022-02-15 00:38:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 411 transitions. [2022-02-15 00:38:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 00:38:12,284 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:12,284 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] [2022-02-15 00:38:12,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 00:38:12,285 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:12,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash 42368072, now seen corresponding path program 1 times [2022-02-15 00:38:12,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:12,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291091504] [2022-02-15 00:38:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:12,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:12,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:12,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291091504] [2022-02-15 00:38:12,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291091504] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:12,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:12,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:38:12,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299799939] [2022-02-15 00:38:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:12,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:38:12,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:38:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:38:12,390 INFO L87 Difference]: Start difference. First operand 301 states and 411 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) [2022-02-15 00:38:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:12,764 INFO L93 Difference]: Finished difference Result 362 states and 486 transitions. [2022-02-15 00:38:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 00:38:12,765 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 [2022-02-15 00:38:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:12,766 INFO L225 Difference]: With dead ends: 362 [2022-02-15 00:38:12,767 INFO L226 Difference]: Without dead ends: 362 [2022-02-15 00:38:12,767 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 [2022-02-15 00:38:12,767 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 568 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:12,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 378 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 00:38:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-02-15 00:38:12,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 341. [2022-02-15 00:38:12,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 278 states have (on average 1.3848920863309353) internal successors, (385), 279 states have internal predecessors, (385), 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) [2022-02-15 00:38:12,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2022-02-15 00:38:12,781 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 462 transitions. Word has length 28 [2022-02-15 00:38:12,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:12,781 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 462 transitions. [2022-02-15 00:38:12,782 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) [2022-02-15 00:38:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 462 transitions. [2022-02-15 00:38:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 00:38:12,783 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:12,783 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] [2022-02-15 00:38:12,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 00:38:12,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:12,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:12,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1039161410, now seen corresponding path program 1 times [2022-02-15 00:38:12,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:12,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145502463] [2022-02-15 00:38:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:12,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:12,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:12,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145502463] [2022-02-15 00:38:12,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145502463] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:12,903 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:12,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:38:12,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569377174] [2022-02-15 00:38:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:12,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:38:12,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:38:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:38:12,904 INFO L87 Difference]: Start difference. First operand 341 states and 462 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) [2022-02-15 00:38:13,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:13,240 INFO L93 Difference]: Finished difference Result 340 states and 459 transitions. [2022-02-15 00:38:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 00:38:13,240 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 [2022-02-15 00:38:13,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:13,242 INFO L225 Difference]: With dead ends: 340 [2022-02-15 00:38:13,242 INFO L226 Difference]: Without dead ends: 340 [2022-02-15 00:38:13,242 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 [2022-02-15 00:38:13,243 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 343 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:13,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 385 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 00:38:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-02-15 00:38:13,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-02-15 00:38:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 278 states have (on average 1.3776978417266188) internal successors, (383), 278 states have internal predecessors, (383), 32 states have call successors, (32), 23 states have call predecessors, (32), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-02-15 00:38:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 459 transitions. [2022-02-15 00:38:13,251 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 459 transitions. Word has length 38 [2022-02-15 00:38:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:13,252 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 459 transitions. [2022-02-15 00:38:13,252 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) [2022-02-15 00:38:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 459 transitions. [2022-02-15 00:38:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 00:38:13,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:13,254 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] [2022-02-15 00:38:13,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 00:38:13,254 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:13,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash 827623692, now seen corresponding path program 1 times [2022-02-15 00:38:13,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:13,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504937610] [2022-02-15 00:38:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:13,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:13,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:13,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504937610] [2022-02-15 00:38:13,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504937610] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:13,385 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:13,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 00:38:13,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410568268] [2022-02-15 00:38:13,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:13,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 00:38:13,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:13,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 00:38:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-15 00:38:13,387 INFO L87 Difference]: Start difference. First operand 340 states and 459 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) [2022-02-15 00:38:13,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:13,862 INFO L93 Difference]: Finished difference Result 319 states and 423 transitions. [2022-02-15 00:38:13,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:38:13,862 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 [2022-02-15 00:38:13,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:13,864 INFO L225 Difference]: With dead ends: 319 [2022-02-15 00:38:13,864 INFO L226 Difference]: Without dead ends: 319 [2022-02-15 00:38:13,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:13,864 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 744 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:13,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 543 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 00:38:13,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-02-15 00:38:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 301. [2022-02-15 00:38:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 244 states have (on average 1.3688524590163935) internal successors, (334), 244 states have internal predecessors, (334), 29 states have call successors, (29), 21 states have call predecessors, (29), 27 states have return successors, (39), 36 states have call predecessors, (39), 24 states have call successors, (39) [2022-02-15 00:38:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 402 transitions. [2022-02-15 00:38:13,872 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 402 transitions. Word has length 46 [2022-02-15 00:38:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:13,872 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 402 transitions. [2022-02-15 00:38:13,872 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) [2022-02-15 00:38:13,872 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 402 transitions. [2022-02-15 00:38:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 00:38:13,883 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:13,883 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] [2022-02-15 00:38:13,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 00:38:13,884 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:13,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1073883700, now seen corresponding path program 1 times [2022-02-15 00:38:13,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:13,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672503700] [2022-02-15 00:38:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:13,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 00:38:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:14,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:14,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672503700] [2022-02-15 00:38:14,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672503700] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:14,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:14,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:14,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046611884] [2022-02-15 00:38:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:14,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:14,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:14,111 INFO L87 Difference]: Start difference. First operand 301 states and 402 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) [2022-02-15 00:38:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:14,760 INFO L93 Difference]: Finished difference Result 322 states and 425 transitions. [2022-02-15 00:38:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:38:14,760 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 [2022-02-15 00:38:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:14,762 INFO L225 Difference]: With dead ends: 322 [2022-02-15 00:38:14,762 INFO L226 Difference]: Without dead ends: 322 [2022-02-15 00:38:14,763 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 [2022-02-15 00:38:14,763 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 527 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:14,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 417 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 00:38:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-02-15 00:38:14,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2022-02-15 00:38:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 256 states have (on average 1.359375) internal successors, (348), 255 states have internal predecessors, (348), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-02-15 00:38:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 418 transitions. [2022-02-15 00:38:14,771 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 418 transitions. Word has length 45 [2022-02-15 00:38:14,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:14,773 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 418 transitions. [2022-02-15 00:38:14,773 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) [2022-02-15 00:38:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 418 transitions. [2022-02-15 00:38:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 00:38:14,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:14,779 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] [2022-02-15 00:38:14,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 00:38:14,779 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:14,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1039481029, now seen corresponding path program 1 times [2022-02-15 00:38:14,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:14,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062514299] [2022-02-15 00:38:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:14,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 00:38:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:14,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:14,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062514299] [2022-02-15 00:38:14,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062514299] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:14,961 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:14,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:14,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440493616] [2022-02-15 00:38:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:14,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:14,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:14,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:14,962 INFO L87 Difference]: Start difference. First operand 315 states and 418 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) [2022-02-15 00:38:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:15,623 INFO L93 Difference]: Finished difference Result 322 states and 424 transitions. [2022-02-15 00:38:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:38:15,623 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 [2022-02-15 00:38:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:15,625 INFO L225 Difference]: With dead ends: 322 [2022-02-15 00:38:15,625 INFO L226 Difference]: Without dead ends: 322 [2022-02-15 00:38:15,625 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 [2022-02-15 00:38:15,626 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 645 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:15,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 584 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 00:38:15,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-02-15 00:38:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2022-02-15 00:38:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 257 states have (on average 1.3579766536964981) internal successors, (349), 256 states have internal predecessors, (349), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-02-15 00:38:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 419 transitions. [2022-02-15 00:38:15,632 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 419 transitions. Word has length 46 [2022-02-15 00:38:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:15,632 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 419 transitions. [2022-02-15 00:38:15,633 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) [2022-02-15 00:38:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 419 transitions. [2022-02-15 00:38:15,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 00:38:15,633 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:15,633 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] [2022-02-15 00:38:15,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 00:38:15,634 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:15,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:15,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2137589877, now seen corresponding path program 1 times [2022-02-15 00:38:15,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:15,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946736701] [2022-02-15 00:38:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:15,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 00:38:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:15,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:15,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946736701] [2022-02-15 00:38:15,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946736701] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:15,729 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:15,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 00:38:15,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190994829] [2022-02-15 00:38:15,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:15,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 00:38:15,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 00:38:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-15 00:38:15,730 INFO L87 Difference]: Start difference. First operand 316 states and 419 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) [2022-02-15 00:38:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:16,137 INFO L93 Difference]: Finished difference Result 310 states and 408 transitions. [2022-02-15 00:38:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:38:16,138 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 [2022-02-15 00:38:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:16,138 INFO L225 Difference]: With dead ends: 310 [2022-02-15 00:38:16,138 INFO L226 Difference]: Without dead ends: 102 [2022-02-15 00:38:16,139 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 [2022-02-15 00:38:16,139 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 432 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:16,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 403 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 00:38:16,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-02-15 00:38:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-02-15 00:38:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 15 states have call successors, (15), 13 states have call predecessors, (15), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-02-15 00:38:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2022-02-15 00:38:16,142 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 47 [2022-02-15 00:38:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:16,142 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2022-02-15 00:38:16,142 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) [2022-02-15 00:38:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2022-02-15 00:38:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 00:38:16,143 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:16,143 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] [2022-02-15 00:38:16,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 00:38:16,143 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:16,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1910683918, now seen corresponding path program 1 times [2022-02-15 00:38:16,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:16,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923404005] [2022-02-15 00:38:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:16,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-15 00:38:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 00:38:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:16,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:16,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923404005] [2022-02-15 00:38:16,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923404005] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:16,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:16,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 00:38:16,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012264970] [2022-02-15 00:38:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:16,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 00:38:16,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 00:38:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 00:38:16,281 INFO L87 Difference]: Start difference. First operand 102 states and 118 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) [2022-02-15 00:38:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:16,429 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2022-02-15 00:38:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:38:16,429 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 [2022-02-15 00:38:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:16,430 INFO L225 Difference]: With dead ends: 100 [2022-02-15 00:38:16,430 INFO L226 Difference]: Without dead ends: 100 [2022-02-15 00:38:16,430 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 [2022-02-15 00:38:16,430 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 74 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:16,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 208 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-15 00:38:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-02-15 00:38:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-02-15 00:38:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2022-02-15 00:38:16,433 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 53 [2022-02-15 00:38:16,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:16,433 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2022-02-15 00:38:16,433 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) [2022-02-15 00:38:16,433 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2022-02-15 00:38:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 00:38:16,434 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:16,434 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] [2022-02-15 00:38:16,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 00:38:16,434 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:16,434 INFO L85 PathProgramCache]: Analyzing trace with hash -948674633, now seen corresponding path program 1 times [2022-02-15 00:38:16,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:16,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55941090] [2022-02-15 00:38:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:16,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:16,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55941090] [2022-02-15 00:38:16,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55941090] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:16,560 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:16,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 00:38:16,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750143204] [2022-02-15 00:38:16,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:16,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 00:38:16,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 00:38:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:38:16,561 INFO L87 Difference]: Start difference. First operand 100 states and 114 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) [2022-02-15 00:38:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:16,681 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2022-02-15 00:38:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:38:16,682 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 [2022-02-15 00:38:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:16,682 INFO L225 Difference]: With dead ends: 118 [2022-02-15 00:38:16,682 INFO L226 Difference]: Without dead ends: 111 [2022-02-15 00:38:16,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:16,683 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 106 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:16,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 308 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-15 00:38:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-02-15 00:38:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.1875) internal successors, (95), 81 states have internal predecessors, (95), 14 states have call successors, (14), 13 states have call predecessors, (14), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-02-15 00:38:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2022-02-15 00:38:16,686 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 57 [2022-02-15 00:38:16,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:16,686 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2022-02-15 00:38:16,686 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) [2022-02-15 00:38:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2022-02-15 00:38:16,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 00:38:16,686 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:16,686 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] [2022-02-15 00:38:16,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 00:38:16,687 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:16,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1641862871, now seen corresponding path program 1 times [2022-02-15 00:38:16,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:16,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223618168] [2022-02-15 00:38:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:16,823 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:16,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223618168] [2022-02-15 00:38:16,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223618168] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:16,823 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:16,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 00:38:16,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551676120] [2022-02-15 00:38:16,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:16,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 00:38:16,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 00:38:16,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:38:16,824 INFO L87 Difference]: Start difference. First operand 105 states and 119 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) [2022-02-15 00:38:16,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:16,986 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-02-15 00:38:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:16,986 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 [2022-02-15 00:38:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:16,987 INFO L225 Difference]: With dead ends: 109 [2022-02-15 00:38:16,987 INFO L226 Difference]: Without dead ends: 109 [2022-02-15 00:38:16,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-02-15 00:38:16,988 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 59 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:16,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 305 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:16,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-15 00:38:16,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-02-15 00:38:16,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 82 states have internal predecessors, (96), 14 states have call successors, (14), 13 states have call predecessors, (14), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-02-15 00:38:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2022-02-15 00:38:16,990 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 57 [2022-02-15 00:38:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:16,990 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2022-02-15 00:38:16,990 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) [2022-02-15 00:38:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2022-02-15 00:38:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 00:38:16,991 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:16,991 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] [2022-02-15 00:38:16,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 00:38:16,991 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1083966817, now seen corresponding path program 1 times [2022-02-15 00:38:16,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:16,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002701401] [2022-02-15 00:38:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:17,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:17,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002701401] [2022-02-15 00:38:17,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002701401] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:17,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:17,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 00:38:17,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185932476] [2022-02-15 00:38:17,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:17,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 00:38:17,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:17,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 00:38:17,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 00:38:17,108 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 00:38:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:17,264 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2022-02-15 00:38:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:38:17,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2022-02-15 00:38:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:17,265 INFO L225 Difference]: With dead ends: 196 [2022-02-15 00:38:17,265 INFO L226 Difference]: Without dead ends: 196 [2022-02-15 00:38:17,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:38:17,266 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 183 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:17,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 208 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:17,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-02-15 00:38:17,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2022-02-15 00:38:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 144 states have (on average 1.1875) internal successors, (171), 146 states have internal predecessors, (171), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (18), 17 states have call predecessors, (18), 14 states have call successors, (18) [2022-02-15 00:38:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 210 transitions. [2022-02-15 00:38:17,269 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 210 transitions. Word has length 58 [2022-02-15 00:38:17,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:17,269 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 210 transitions. [2022-02-15 00:38:17,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 00:38:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 210 transitions. [2022-02-15 00:38:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 00:38:17,270 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:17,270 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] [2022-02-15 00:38:17,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 00:38:17,270 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:17,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1971470498, now seen corresponding path program 1 times [2022-02-15 00:38:17,271 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:17,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94303868] [2022-02-15 00:38:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:17,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:17,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:17,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94303868] [2022-02-15 00:38:17,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94303868] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:17,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:17,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 00:38:17,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222916697] [2022-02-15 00:38:17,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:17,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 00:38:17,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 00:38:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:38:17,430 INFO L87 Difference]: Start difference. First operand 184 states and 210 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) [2022-02-15 00:38:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:17,533 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2022-02-15 00:38:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:38:17,533 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 [2022-02-15 00:38:17,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:17,534 INFO L225 Difference]: With dead ends: 172 [2022-02-15 00:38:17,534 INFO L226 Difference]: Without dead ends: 172 [2022-02-15 00:38:17,534 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 [2022-02-15 00:38:17,534 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:17,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 256 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-02-15 00:38:17,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-02-15 00:38:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 132 states have (on average 1.1590909090909092) internal successors, (153), 134 states have internal predecessors, (153), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (18), 17 states have call predecessors, (18), 14 states have call successors, (18) [2022-02-15 00:38:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2022-02-15 00:38:17,538 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 58 [2022-02-15 00:38:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:17,538 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2022-02-15 00:38:17,538 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) [2022-02-15 00:38:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2022-02-15 00:38:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 00:38:17,539 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:17,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:17,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 00:38:17,539 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:17,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:17,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2034770721, now seen corresponding path program 1 times [2022-02-15 00:38:17,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:17,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199752697] [2022-02-15 00:38:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:17,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:17,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:17,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199752697] [2022-02-15 00:38:17,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199752697] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:17,716 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:17,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:17,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236896011] [2022-02-15 00:38:17,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:17,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:17,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:17,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:17,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:17,717 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 00:38:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:17,984 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2022-02-15 00:38:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 00:38:17,985 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-02-15 00:38:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:17,985 INFO L225 Difference]: With dead ends: 160 [2022-02-15 00:38:17,986 INFO L226 Difference]: Without dead ends: 156 [2022-02-15 00:38:17,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:17,986 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 144 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:17,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 257 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-02-15 00:38:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-02-15 00:38:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 120 states have internal predecessors, (135), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-02-15 00:38:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 172 transitions. [2022-02-15 00:38:17,989 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 172 transitions. Word has length 62 [2022-02-15 00:38:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:17,990 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 172 transitions. [2022-02-15 00:38:17,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 00:38:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 172 transitions. [2022-02-15 00:38:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-15 00:38:17,990 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:17,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:17,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 00:38:17,990 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1057027574, now seen corresponding path program 1 times [2022-02-15 00:38:17,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:17,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850434488] [2022-02-15 00:38:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:17,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:18,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:18,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850434488] [2022-02-15 00:38:18,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850434488] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:18,112 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:18,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:38:18,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120088928] [2022-02-15 00:38:18,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:18,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:38:18,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:38:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:18,113 INFO L87 Difference]: Start difference. First operand 156 states and 172 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 00:38:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:18,205 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2022-02-15 00:38:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 00:38:18,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-02-15 00:38:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:18,206 INFO L225 Difference]: With dead ends: 168 [2022-02-15 00:38:18,207 INFO L226 Difference]: Without dead ends: 168 [2022-02-15 00:38:18,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:18,208 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 103 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:18,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 207 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-02-15 00:38:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2022-02-15 00:38:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 126 states have internal predecessors, (141), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-02-15 00:38:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2022-02-15 00:38:18,212 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 64 [2022-02-15 00:38:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:18,213 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2022-02-15 00:38:18,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 00:38:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2022-02-15 00:38:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-15 00:38:18,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:18,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:18,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 00:38:18,215 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:18,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash 763624567, now seen corresponding path program 1 times [2022-02-15 00:38:18,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:18,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18915625] [2022-02-15 00:38:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:18,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:18,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18915625] [2022-02-15 00:38:18,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18915625] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:18,330 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:18,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:38:18,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648419703] [2022-02-15 00:38:18,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:18,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:38:18,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:38:18,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:18,331 INFO L87 Difference]: Start difference. First operand 162 states and 178 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 00:38:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:18,497 INFO L93 Difference]: Finished difference Result 179 states and 196 transitions. [2022-02-15 00:38:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:38:18,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-02-15 00:38:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:18,498 INFO L225 Difference]: With dead ends: 179 [2022-02-15 00:38:18,498 INFO L226 Difference]: Without dead ends: 177 [2022-02-15 00:38:18,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:38:18,498 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 78 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:18,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 215 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-15 00:38:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 166. [2022-02-15 00:38:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.125) internal successors, (144), 130 states have internal predecessors, (144), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-02-15 00:38:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2022-02-15 00:38:18,501 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 64 [2022-02-15 00:38:18,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:18,502 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2022-02-15 00:38:18,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 00:38:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2022-02-15 00:38:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-15 00:38:18,502 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:18,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:18,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 00:38:18,502 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:18,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1206614856, now seen corresponding path program 1 times [2022-02-15 00:38:18,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:18,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718627564] [2022-02-15 00:38:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:18,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:18,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:18,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718627564] [2022-02-15 00:38:18,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718627564] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:18,621 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:18,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:18,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186088290] [2022-02-15 00:38:18,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:18,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:18,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:18,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:18,622 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 00:38:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:18,766 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions. [2022-02-15 00:38:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-02-15 00:38:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:18,767 INFO L225 Difference]: With dead ends: 175 [2022-02-15 00:38:18,767 INFO L226 Difference]: Without dead ends: 175 [2022-02-15 00:38:18,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:18,768 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 87 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:18,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 337 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-02-15 00:38:18,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2022-02-15 00:38:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.109375) internal successors, (142), 130 states have internal predecessors, (142), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-02-15 00:38:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2022-02-15 00:38:18,771 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 64 [2022-02-15 00:38:18,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:18,771 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2022-02-15 00:38:18,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 00:38:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2022-02-15 00:38:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 00:38:18,772 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:18,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:18,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 00:38:18,772 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:18,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2128246060, now seen corresponding path program 1 times [2022-02-15 00:38:18,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:18,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429524055] [2022-02-15 00:38:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:18,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:18,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:18,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429524055] [2022-02-15 00:38:18,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429524055] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:18,933 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:18,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:18,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195611515] [2022-02-15 00:38:18,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:18,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:18,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:18,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:18,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:18,934 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 00:38:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:19,249 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2022-02-15 00:38:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:38:19,249 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-02-15 00:38:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:19,250 INFO L225 Difference]: With dead ends: 163 [2022-02-15 00:38:19,250 INFO L226 Difference]: Without dead ends: 144 [2022-02-15 00:38:19,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:19,250 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 205 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:19,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 154 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:19,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-02-15 00:38:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-02-15 00:38:19,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 109 states have (on average 1.091743119266055) internal successors, (119), 110 states have internal predecessors, (119), 20 states have call successors, (20), 19 states have call predecessors, (20), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-15 00:38:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2022-02-15 00:38:19,253 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 65 [2022-02-15 00:38:19,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:19,253 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2022-02-15 00:38:19,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 00:38:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2022-02-15 00:38:19,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 00:38:19,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:19,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:19,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 00:38:19,254 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1266450091, now seen corresponding path program 1 times [2022-02-15 00:38:19,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:19,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500160143] [2022-02-15 00:38:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:19,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:19,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500160143] [2022-02-15 00:38:19,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500160143] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:19,376 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:19,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:38:19,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747632636] [2022-02-15 00:38:19,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:19,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:38:19,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:38:19,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:19,377 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 00:38:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:19,495 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2022-02-15 00:38:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:38:19,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-02-15 00:38:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:19,496 INFO L225 Difference]: With dead ends: 139 [2022-02-15 00:38:19,496 INFO L226 Difference]: Without dead ends: 137 [2022-02-15 00:38:19,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:19,497 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 72 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:19,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 155 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-15 00:38:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-02-15 00:38:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.058252427184466) internal successors, (109), 103 states have internal predecessors, (109), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-15 00:38:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 142 transitions. [2022-02-15 00:38:19,499 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 142 transitions. Word has length 65 [2022-02-15 00:38:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:19,499 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 142 transitions. [2022-02-15 00:38:19,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 00:38:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 142 transitions. [2022-02-15 00:38:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 00:38:19,500 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:19,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:19,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 00:38:19,500 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:19,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash 79966819, now seen corresponding path program 1 times [2022-02-15 00:38:19,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:19,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053729837] [2022-02-15 00:38:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:19,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:19,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053729837] [2022-02-15 00:38:19,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053729837] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:19,670 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:19,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:19,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986547279] [2022-02-15 00:38:19,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:19,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:19,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:19,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:19,671 INFO L87 Difference]: Start difference. First operand 137 states and 142 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 00:38:19,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:19,819 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2022-02-15 00:38:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:19,819 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2022-02-15 00:38:19,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:19,820 INFO L225 Difference]: With dead ends: 137 [2022-02-15 00:38:19,820 INFO L226 Difference]: Without dead ends: 137 [2022-02-15 00:38:19,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:19,821 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 37 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:19,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 260 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:19,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-15 00:38:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-02-15 00:38:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-15 00:38:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2022-02-15 00:38:19,823 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 65 [2022-02-15 00:38:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:19,823 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2022-02-15 00:38:19,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 00:38:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2022-02-15 00:38:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 00:38:19,824 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:19,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:19,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 00:38:19,824 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:19,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash -117181948, now seen corresponding path program 1 times [2022-02-15 00:38:19,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:19,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66840234] [2022-02-15 00:38:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:19,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 00:38:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-15 00:38:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:19,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:19,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66840234] [2022-02-15 00:38:19,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66840234] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:19,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:19,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 00:38:19,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147763610] [2022-02-15 00:38:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:19,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 00:38:19,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 00:38:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:38:19,942 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 00:38:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:20,069 INFO L93 Difference]: Finished difference Result 108 states and 107 transitions. [2022-02-15 00:38:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:38:20,070 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-02-15 00:38:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:20,070 INFO L225 Difference]: With dead ends: 108 [2022-02-15 00:38:20,070 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 00:38:20,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:20,071 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 31 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:20,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 186 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 00:38:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 00:38:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 00:38:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 00:38:20,072 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-02-15 00:38:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:20,072 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 00:38:20,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 00:38:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 00:38:20,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 00:38:20,074 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 00:38:20,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 00:38:20,077 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] [2022-02-15 00:38:20,077 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 00:38:20,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:38:20 BasicIcfg [2022-02-15 00:38:20,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 00:38:20,079 INFO L158 Benchmark]: Toolchain (without parser) took 10516.89ms. Allocated memory was 198.2MB in the beginning and 312.5MB in the end (delta: 114.3MB). Free memory was 148.1MB in the beginning and 211.9MB in the end (delta: -63.8MB). Peak memory consumption was 51.6MB. Max. memory is 8.0GB. [2022-02-15 00:38:20,079 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 198.2MB. Free memory is still 165.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 00:38:20,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.90ms. Allocated memory is still 198.2MB. Free memory was 147.9MB in the beginning and 167.2MB in the end (delta: -19.3MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2022-02-15 00:38:20,080 INFO L158 Benchmark]: Boogie Preprocessor took 35.78ms. Allocated memory is still 198.2MB. Free memory was 167.2MB in the beginning and 164.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-15 00:38:20,080 INFO L158 Benchmark]: RCFGBuilder took 613.25ms. Allocated memory is still 198.2MB. Free memory was 164.1MB in the beginning and 131.3MB in the end (delta: 32.8MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-02-15 00:38:20,080 INFO L158 Benchmark]: IcfgTransformer took 36.62ms. Allocated memory is still 198.2MB. Free memory was 131.3MB in the beginning and 127.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-02-15 00:38:20,080 INFO L158 Benchmark]: TraceAbstraction took 9541.39ms. Allocated memory was 198.2MB in the beginning and 312.5MB in the end (delta: 114.3MB). Free memory was 126.3MB in the beginning and 211.9MB in the end (delta: -85.5MB). Peak memory consumption was 30.1MB. Max. memory is 8.0GB. [2022-02-15 00:38:20,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 198.2MB. Free memory is still 165.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 283.90ms. Allocated memory is still 198.2MB. Free memory was 147.9MB in the beginning and 167.2MB in the end (delta: -19.3MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.78ms. Allocated memory is still 198.2MB. Free memory was 167.2MB in the beginning and 164.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 613.25ms. Allocated memory is still 198.2MB. Free memory was 164.1MB in the beginning and 131.3MB in the end (delta: 32.8MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * IcfgTransformer took 36.62ms. Allocated memory is still 198.2MB. Free memory was 131.3MB in the beginning and 127.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 9541.39ms. Allocated memory was 198.2MB in the beginning and 312.5MB in the end (delta: 114.3MB). Free memory was 126.3MB in the beginning and 211.9MB in the end (delta: -85.5MB). Peak memory consumption was 30.1MB. 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 - PositiveResult [Line: 1013]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5226 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5209 mSDsluCounter, 6671 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3495 mSDsCounter, 1267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6357 IncrementalHoareTripleChecker+Invalid, 7624 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1267 mSolverCounterUnsat, 3176 mSDtfsCounter, 6357 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 419 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=3, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 169 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1106 NumberOfCodeBlocks, 1106 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1085 ConstructedInterpolants, 0 QuantifiedInterpolants, 5192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-15 00:38:20,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...