/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_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 18:43:11,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 18:43:11,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 18:43:11,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 18:43:11,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 18:43:11,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 18:43:11,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 18:43:11,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 18:43:11,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 18:43:11,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 18:43:11,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 18:43:11,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 18:43:11,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 18:43:11,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 18:43:11,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 18:43:11,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 18:43:11,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 18:43:11,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 18:43:11,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 18:43:11,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 18:43:11,679 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 18:43:11,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 18:43:11,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 18:43:11,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 18:43:11,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 18:43:11,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-17 18:43:11,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-17 18:43:11,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-17 18:43:11,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-17 18:43:11,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-17 18:43:11,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-17 18:43:11,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-17 18:43:11,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-17 18:43:11,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-17 18:43:11,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-17 18:43:11,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-17 18:43:11,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-17 18:43:11,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-17 18:43:11,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-17 18:43:11,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 18:43:11,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 18:43:11,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 18:43:11,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 18:43:11,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 18:43:11,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 18:43:11,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 18:43:11,704 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 18:43:11,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 18:43:11,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 18:43:11,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 18:43:11,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 18:43:11,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 18:43:11,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 18:43:11,705 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 18:43:11,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 18:43:11,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 18:43:11,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 18:43:11,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 18:43:11,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 18:43:11,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 18:43:11,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 18:43:11,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:43:11,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 18:43:11,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 18:43:11,706 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 18:43:11,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 18:43:11,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 18:43:11,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 18:43:11,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 18:43:11,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 18:43:11,927 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 18:43:11,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-03-17 18:43:11,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71490172/79ba7f44dbea486bab815876f93425fd/FLAG4cdcd2425 [2022-03-17 18:43:12,286 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 18:43:12,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-03-17 18:43:12,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71490172/79ba7f44dbea486bab815876f93425fd/FLAG4cdcd2425 [2022-03-17 18:43:12,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71490172/79ba7f44dbea486bab815876f93425fd [2022-03-17 18:43:12,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 18:43:12,694 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 18:43:12,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 18:43:12,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 18:43:12,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 18:43:12,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec849f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12, skipping insertion in model container [2022-03-17 18:43:12,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 18:43:12,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 18:43:12,892 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_simpl1.cil.c[17080,17093] [2022-03-17 18:43:12,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:43:12,899 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 18:43:12,925 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_simpl1.cil.c[17080,17093] [2022-03-17 18:43:12,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:43:12,934 INFO L208 MainTranslator]: Completed translation [2022-03-17 18:43:12,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12 WrapperNode [2022-03-17 18:43:12,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 18:43:12,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 18:43:12,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 18:43:12,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 18:43:12,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 18:43:12,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 18:43:12,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 18:43:12,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 18:43:12,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12" (1/1) ... [2022-03-17 18:43:12,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:43:13,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:43:13,009 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) [2022-03-17 18:43:13,020 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 [2022-03-17 18:43:13,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 18:43:13,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 18:43:13,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 18:43:13,033 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-17 18:43:13,033 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-17 18:43:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-17 18:43:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 18:43:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-17 18:43:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-17 18:43:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-17 18:43:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-17 18:43:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-17 18:43:13,035 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-17 18:43:13,035 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-17 18:43:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-17 18:43:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 18:43:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 18:43:13,103 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 18:43:13,104 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 18:43:13,202 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:13,305 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-03-17 18:43:13,305 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-03-17 18:43:13,306 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:13,346 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2022-03-17 18:43:13,346 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2022-03-17 18:43:13,376 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:13,388 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-17 18:43:13,388 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-17 18:43:13,400 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:13,500 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-17 18:43:13,500 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-17 18:43:13,503 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 18:43:13,508 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 18:43:13,508 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-17 18:43:13,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:43:13 BoogieIcfgContainer [2022-03-17 18:43:13,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 18:43:13,510 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 18:43:13,510 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 18:43:13,511 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 18:43:13,513 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:43:13" (1/1) ... [2022-03-17 18:43:13,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:43:13 BasicIcfg [2022-03-17 18:43:13,537 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 18:43:13,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 18:43:13,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 18:43:13,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 18:43:13,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:43:12" (1/4) ... [2022-03-17 18:43:13,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a60a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:43:13, skipping insertion in model container [2022-03-17 18:43:13,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:12" (2/4) ... [2022-03-17 18:43:13,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a60a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:43:13, skipping insertion in model container [2022-03-17 18:43:13,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:43:13" (3/4) ... [2022-03-17 18:43:13,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a60a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:43:13, skipping insertion in model container [2022-03-17 18:43:13,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:43:13" (4/4) ... [2022-03-17 18:43:13,545 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.cJordan [2022-03-17 18:43:13,548 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 18:43:13,549 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 18:43:13,584 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 18:43:13,592 INFO L340 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 [2022-03-17 18:43:13,592 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 18:43:13,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 113 states have (on average 1.5575221238938053) internal successors, (176), 126 states have internal predecessors, (176), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-17 18:43:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-17 18:43:13,618 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:13,618 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:13,619 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1155157574, now seen corresponding path program 1 times [2022-03-17 18:43:13,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:13,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327311500] [2022-03-17 18:43:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:13,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:13,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:13,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327311500] [2022-03-17 18:43:13,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327311500] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:13,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:13,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 18:43:13,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579716662] [2022-03-17 18:43:13,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:13,963 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 18:43:13,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 18:43:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:43:13,981 INFO L87 Difference]: Start difference. First operand has 151 states, 113 states have (on average 1.5575221238938053) internal successors, (176), 126 states have internal predecessors, (176), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) 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) [2022-03-17 18:43:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:14,371 INFO L93 Difference]: Finished difference Result 168 states and 236 transitions. [2022-03-17 18:43:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:43:14,373 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 [2022-03-17 18:43:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:14,388 INFO L225 Difference]: With dead ends: 168 [2022-03-17 18:43:14,388 INFO L226 Difference]: Without dead ends: 157 [2022-03-17 18:43:14,389 INFO L911 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 [2022-03-17 18:43:14,391 INFO L912 BasicCegarLoop]: 182 mSDtfsCounter, 180 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:14,392 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 286 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:43:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-03-17 18:43:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2022-03-17 18:43:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 105 states have (on average 1.457142857142857) internal successors, (153), 116 states have internal predecessors, (153), 24 states have call successors, (24), 12 states have call predecessors, (24), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-17 18:43:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2022-03-17 18:43:14,422 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 20 [2022-03-17 18:43:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:14,422 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2022-03-17 18:43:14,422 INFO L479 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) [2022-03-17 18:43:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2022-03-17 18:43:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-17 18:43:14,423 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:14,423 INFO L500 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] [2022-03-17 18:43:14,423 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 18:43:14,423 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:14,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:14,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1515864402, now seen corresponding path program 1 times [2022-03-17 18:43:14,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:14,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392477763] [2022-03-17 18:43:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:14,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:14,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:14,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392477763] [2022-03-17 18:43:14,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392477763] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:14,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:14,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:43:14,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296562840] [2022-03-17 18:43:14,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:14,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:43:14,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:43:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:43:14,536 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-03-17 18:43:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:14,912 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2022-03-17 18:43:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 18:43:14,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 3 states have internal predecessors, (17), 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 26 [2022-03-17 18:43:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:14,917 INFO L225 Difference]: With dead ends: 220 [2022-03-17 18:43:14,917 INFO L226 Difference]: Without dead ends: 219 [2022-03-17 18:43:14,918 INFO L911 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 [2022-03-17 18:43:14,919 INFO L912 BasicCegarLoop]: 202 mSDtfsCounter, 318 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:14,920 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 280 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:43:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-03-17 18:43:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 195. [2022-03-17 18:43:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 153 states have (on average 1.3660130718954249) internal successors, (209), 157 states have internal predecessors, (209), 25 states have call successors, (25), 18 states have call predecessors, (25), 16 states have return successors, (25), 21 states have call predecessors, (25), 18 states have call successors, (25) [2022-03-17 18:43:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 259 transitions. [2022-03-17 18:43:14,936 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 259 transitions. Word has length 26 [2022-03-17 18:43:14,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:14,936 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 259 transitions. [2022-03-17 18:43:14,936 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-03-17 18:43:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 259 transitions. [2022-03-17 18:43:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-17 18:43:14,937 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:14,937 INFO L500 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] [2022-03-17 18:43:14,937 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 18:43:14,937 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:14,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:14,937 INFO L85 PathProgramCache]: Analyzing trace with hash 252875622, now seen corresponding path program 1 times [2022-03-17 18:43:14,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:14,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180632746] [2022-03-17 18:43:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:14,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:15,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:15,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180632746] [2022-03-17 18:43:15,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180632746] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:15,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:15,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:43:15,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615741193] [2022-03-17 18:43:15,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:15,080 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:43:15,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:15,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:43:15,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:43:15,080 INFO L87 Difference]: Start difference. First operand 195 states and 259 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, (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) [2022-03-17 18:43:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:15,353 INFO L93 Difference]: Finished difference Result 254 states and 335 transitions. [2022-03-17 18:43:15,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 18:43:15,353 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, (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 27 [2022-03-17 18:43:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:15,355 INFO L225 Difference]: With dead ends: 254 [2022-03-17 18:43:15,355 INFO L226 Difference]: Without dead ends: 254 [2022-03-17 18:43:15,355 INFO L911 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 [2022-03-17 18:43:15,356 INFO L912 BasicCegarLoop]: 161 mSDtfsCounter, 320 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:15,356 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 252 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:43:15,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-03-17 18:43:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 217. [2022-03-17 18:43:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 177 states have (on average 1.3728813559322033) internal successors, (243), 181 states have internal predecessors, (243), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 16 states have call successors, (25) [2022-03-17 18:43:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 289 transitions. [2022-03-17 18:43:15,365 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 289 transitions. Word has length 27 [2022-03-17 18:43:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:15,366 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 289 transitions. [2022-03-17 18:43:15,366 INFO L479 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, (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) [2022-03-17 18:43:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 289 transitions. [2022-03-17 18:43:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-17 18:43:15,367 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:15,367 INFO L500 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] [2022-03-17 18:43:15,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 18:43:15,367 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash -301837211, now seen corresponding path program 1 times [2022-03-17 18:43:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:15,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080701322] [2022-03-17 18:43:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:15,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:15,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:15,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080701322] [2022-03-17 18:43:15,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080701322] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:15,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:15,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:43:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994337052] [2022-03-17 18:43:15,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:15,477 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:43:15,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:15,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:43:15,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:43:15,478 INFO L87 Difference]: Start difference. First operand 217 states and 289 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, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:43:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:15,827 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2022-03-17 18:43:15,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 18:43:15,827 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, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-03-17 18:43:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:15,829 INFO L225 Difference]: With dead ends: 217 [2022-03-17 18:43:15,829 INFO L226 Difference]: Without dead ends: 217 [2022-03-17 18:43:15,829 INFO L911 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 [2022-03-17 18:43:15,830 INFO L912 BasicCegarLoop]: 168 mSDtfsCounter, 92 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:15,830 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 256 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:43:15,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-03-17 18:43:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-03-17 18:43:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 177 states have (on average 1.3672316384180792) internal successors, (242), 181 states have internal predecessors, (242), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 16 states have call successors, (25) [2022-03-17 18:43:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 288 transitions. [2022-03-17 18:43:15,838 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 288 transitions. Word has length 37 [2022-03-17 18:43:15,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:15,838 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 288 transitions. [2022-03-17 18:43:15,838 INFO L479 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, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:43:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 288 transitions. [2022-03-17 18:43:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-17 18:43:15,839 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:15,840 INFO L500 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] [2022-03-17 18:43:15,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 18:43:15,840 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash -141227467, now seen corresponding path program 1 times [2022-03-17 18:43:15,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:15,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512160006] [2022-03-17 18:43:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:15,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:15,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512160006] [2022-03-17 18:43:15,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512160006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:15,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:15,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:43:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371805660] [2022-03-17 18:43:15,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:15,951 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:43:15,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:43:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:43:15,952 INFO L87 Difference]: Start difference. First operand 217 states and 288 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 5 states have internal predecessors, (33), 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) [2022-03-17 18:43:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:16,300 INFO L93 Difference]: Finished difference Result 208 states and 271 transitions. [2022-03-17 18:43:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:43:16,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 5 states have internal predecessors, (33), 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 45 [2022-03-17 18:43:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:16,301 INFO L225 Difference]: With dead ends: 208 [2022-03-17 18:43:16,301 INFO L226 Difference]: Without dead ends: 208 [2022-03-17 18:43:16,302 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-03-17 18:43:16,302 INFO L912 BasicCegarLoop]: 193 mSDtfsCounter, 459 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:16,302 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 435 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:43:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-03-17 18:43:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2022-03-17 18:43:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 153 states have (on average 1.3594771241830066) internal successors, (208), 156 states have internal predecessors, (208), 20 states have call successors, (20), 15 states have call predecessors, (20), 16 states have return successors, (22), 19 states have call predecessors, (22), 15 states have call successors, (22) [2022-03-17 18:43:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2022-03-17 18:43:16,308 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 45 [2022-03-17 18:43:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:16,308 INFO L478 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2022-03-17 18:43:16,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 5 states have internal predecessors, (33), 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) [2022-03-17 18:43:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2022-03-17 18:43:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-17 18:43:16,309 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:16,309 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:16,310 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-17 18:43:16,310 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:16,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1455239378, now seen corresponding path program 1 times [2022-03-17 18:43:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:16,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522847753] [2022-03-17 18:43:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-17 18:43:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-17 18:43:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:16,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:16,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522847753] [2022-03-17 18:43:16,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522847753] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:16,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:16,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:43:16,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086672848] [2022-03-17 18:43:16,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:16,422 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:43:16,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:16,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:43:16,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:43:16,422 INFO L87 Difference]: Start difference. First operand 190 states and 250 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, (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) [2022-03-17 18:43:16,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:16,688 INFO L93 Difference]: Finished difference Result 197 states and 257 transitions. [2022-03-17 18:43:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 18:43:16,688 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, (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 51 [2022-03-17 18:43:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:16,689 INFO L225 Difference]: With dead ends: 197 [2022-03-17 18:43:16,689 INFO L226 Difference]: Without dead ends: 197 [2022-03-17 18:43:16,689 INFO L911 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 [2022-03-17 18:43:16,690 INFO L912 BasicCegarLoop]: 167 mSDtfsCounter, 191 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:16,690 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 360 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:43:16,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-03-17 18:43:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2022-03-17 18:43:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 152 states have (on average 1.3486842105263157) internal successors, (205), 154 states have internal predecessors, (205), 19 states have call successors, (19), 15 states have call predecessors, (19), 16 states have return successors, (22), 19 states have call predecessors, (22), 15 states have call successors, (22) [2022-03-17 18:43:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 246 transitions. [2022-03-17 18:43:16,695 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 246 transitions. Word has length 51 [2022-03-17 18:43:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:16,695 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 246 transitions. [2022-03-17 18:43:16,695 INFO L479 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, (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) [2022-03-17 18:43:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 246 transitions. [2022-03-17 18:43:16,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-17 18:43:16,700 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:16,700 INFO L500 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] [2022-03-17 18:43:16,700 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-17 18:43:16,700 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:16,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:16,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1069507529, now seen corresponding path program 1 times [2022-03-17 18:43:16,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:16,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208039705] [2022-03-17 18:43:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:16,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 18:43:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:16,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:16,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208039705] [2022-03-17 18:43:16,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208039705] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:16,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:16,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:16,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20078555] [2022-03-17 18:43:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:16,863 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:16,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:16,864 INFO L87 Difference]: Start difference. First operand 188 states and 246 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 18:43:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:17,443 INFO L93 Difference]: Finished difference Result 210 states and 270 transitions. [2022-03-17 18:43:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 18:43:17,443 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-03-17 18:43:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:17,446 INFO L225 Difference]: With dead ends: 210 [2022-03-17 18:43:17,446 INFO L226 Difference]: Without dead ends: 210 [2022-03-17 18:43:17,446 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-03-17 18:43:17,449 INFO L912 BasicCegarLoop]: 194 mSDtfsCounter, 562 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:17,450 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 494 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:43:17,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-03-17 18:43:17,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 188. [2022-03-17 18:43:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 152 states have (on average 1.3421052631578947) internal successors, (204), 154 states have internal predecessors, (204), 19 states have call successors, (19), 15 states have call predecessors, (19), 16 states have return successors, (21), 19 states have call predecessors, (21), 15 states have call successors, (21) [2022-03-17 18:43:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 244 transitions. [2022-03-17 18:43:17,459 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 244 transitions. Word has length 50 [2022-03-17 18:43:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:17,460 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 244 transitions. [2022-03-17 18:43:17,460 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 18:43:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 244 transitions. [2022-03-17 18:43:17,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 18:43:17,463 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:17,463 INFO L500 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] [2022-03-17 18:43:17,463 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-17 18:43:17,463 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:17,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1382255258, now seen corresponding path program 1 times [2022-03-17 18:43:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:17,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67255418] [2022-03-17 18:43:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:17,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:17,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 18:43:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:17,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:17,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67255418] [2022-03-17 18:43:17,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67255418] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:17,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:17,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 18:43:17,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538768426] [2022-03-17 18:43:17,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:17,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 18:43:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 18:43:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:43:17,690 INFO L87 Difference]: Start difference. First operand 188 states and 244 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 18:43:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:18,130 INFO L93 Difference]: Finished difference Result 182 states and 235 transitions. [2022-03-17 18:43:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:43:18,130 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2022-03-17 18:43:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:18,131 INFO L225 Difference]: With dead ends: 182 [2022-03-17 18:43:18,131 INFO L226 Difference]: Without dead ends: 182 [2022-03-17 18:43:18,131 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-03-17 18:43:18,132 INFO L912 BasicCegarLoop]: 153 mSDtfsCounter, 481 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:18,132 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 379 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:43:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-03-17 18:43:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2022-03-17 18:43:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 142 states have (on average 1.352112676056338) internal successors, (192), 146 states have internal predecessors, (192), 19 states have call successors, (19), 15 states have call predecessors, (19), 14 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-03-17 18:43:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2022-03-17 18:43:18,136 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 52 [2022-03-17 18:43:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:18,137 INFO L478 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2022-03-17 18:43:18,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 18:43:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2022-03-17 18:43:18,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 18:43:18,137 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:18,137 INFO L500 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] [2022-03-17 18:43:18,138 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-17 18:43:18,138 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:18,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash -459288966, now seen corresponding path program 1 times [2022-03-17 18:43:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:18,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943582914] [2022-03-17 18:43:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:18,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 18:43:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:18,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:18,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943582914] [2022-03-17 18:43:18,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943582914] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:18,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:18,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 18:43:18,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472753575] [2022-03-17 18:43:18,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:18,269 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 18:43:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 18:43:18,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:43:18,270 INFO L87 Difference]: Start difference. First operand 176 states and 228 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:43:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:18,502 INFO L93 Difference]: Finished difference Result 178 states and 228 transitions. [2022-03-17 18:43:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 18:43:18,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-03-17 18:43:18,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:18,503 INFO L225 Difference]: With dead ends: 178 [2022-03-17 18:43:18,503 INFO L226 Difference]: Without dead ends: 91 [2022-03-17 18:43:18,503 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:18,504 INFO L912 BasicCegarLoop]: 146 mSDtfsCounter, 400 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:18,504 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 236 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:43:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-03-17 18:43:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-03-17 18:43:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 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) [2022-03-17 18:43:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2022-03-17 18:43:18,506 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 52 [2022-03-17 18:43:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:18,506 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2022-03-17 18:43:18,507 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:43:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2022-03-17 18:43:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-17 18:43:18,507 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:18,507 INFO L500 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] [2022-03-17 18:43:18,507 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-17 18:43:18,507 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash -273247555, now seen corresponding path program 1 times [2022-03-17 18:43:18,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:18,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936158829] [2022-03-17 18:43:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:18,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:18,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:18,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936158829] [2022-03-17 18:43:18,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936158829] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:18,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:18,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:18,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135949481] [2022-03-17 18:43:18,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:18,660 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:18,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:18,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:18,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:18,661 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-03-17 18:43:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:18,975 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2022-03-17 18:43:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:43:18,975 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 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 59 [2022-03-17 18:43:18,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:18,976 INFO L225 Difference]: With dead ends: 91 [2022-03-17 18:43:18,976 INFO L226 Difference]: Without dead ends: 91 [2022-03-17 18:43:18,976 INFO L911 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 [2022-03-17 18:43:18,977 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 96 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:18,977 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 244 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:43:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-03-17 18:43:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-03-17 18:43:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.164179104477612) internal successors, (78), 68 states have internal predecessors, (78), 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) [2022-03-17 18:43:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2022-03-17 18:43:18,979 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 59 [2022-03-17 18:43:18,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:18,979 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2022-03-17 18:43:18,979 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-03-17 18:43:18,979 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2022-03-17 18:43:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-17 18:43:18,980 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:18,980 INFO L500 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] [2022-03-17 18:43:18,980 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-17 18:43:18,980 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash 366370572, now seen corresponding path program 1 times [2022-03-17 18:43:18,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:18,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189044493] [2022-03-17 18:43:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:18,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:19,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:19,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189044493] [2022-03-17 18:43:19,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189044493] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:19,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:19,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:19,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218121407] [2022-03-17 18:43:19,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:19,106 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:19,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:19,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:19,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:19,107 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-03-17 18:43:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:19,229 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2022-03-17 18:43:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:43:19,230 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 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 61 [2022-03-17 18:43:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:19,230 INFO L225 Difference]: With dead ends: 103 [2022-03-17 18:43:19,230 INFO L226 Difference]: Without dead ends: 93 [2022-03-17 18:43:19,231 INFO L911 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 [2022-03-17 18:43:19,231 INFO L912 BasicCegarLoop]: 72 mSDtfsCounter, 108 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:19,231 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 306 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-03-17 18:43:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2022-03-17 18:43:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 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) [2022-03-17 18:43:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2022-03-17 18:43:19,233 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 61 [2022-03-17 18:43:19,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:19,233 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2022-03-17 18:43:19,234 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-03-17 18:43:19,234 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2022-03-17 18:43:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-17 18:43:19,234 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:19,234 INFO L500 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] [2022-03-17 18:43:19,234 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-17 18:43:19,234 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:19,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash -350640073, now seen corresponding path program 1 times [2022-03-17 18:43:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:19,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020635395] [2022-03-17 18:43:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:19,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:19,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020635395] [2022-03-17 18:43:19,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020635395] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:19,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:19,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:43:19,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332326790] [2022-03-17 18:43:19,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:19,354 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:43:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:43:19,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:43:19,355 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-03-17 18:43:19,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:19,445 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2022-03-17 18:43:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 18:43:19,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 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 62 [2022-03-17 18:43:19,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:19,446 INFO L225 Difference]: With dead ends: 78 [2022-03-17 18:43:19,446 INFO L226 Difference]: Without dead ends: 78 [2022-03-17 18:43:19,446 INFO L911 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 [2022-03-17 18:43:19,447 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 79 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:19,447 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 195 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-03-17 18:43:19,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-03-17 18:43:19,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-17 18:43:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-03-17 18:43:19,449 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 62 [2022-03-17 18:43:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:19,449 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-03-17 18:43:19,449 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-03-17 18:43:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-03-17 18:43:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-17 18:43:19,450 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:19,450 INFO L500 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] [2022-03-17 18:43:19,450 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-17 18:43:19,450 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:19,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:19,450 INFO L85 PathProgramCache]: Analyzing trace with hash -57237066, now seen corresponding path program 1 times [2022-03-17 18:43:19,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:19,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373535367] [2022-03-17 18:43:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:19,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:19,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:19,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373535367] [2022-03-17 18:43:19,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373535367] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:19,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:19,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:43:19,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440179081] [2022-03-17 18:43:19,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:19,555 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:43:19,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:19,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:43:19,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:43:19,556 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-03-17 18:43:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:19,670 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2022-03-17 18:43:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:43:19,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 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 62 [2022-03-17 18:43:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:19,671 INFO L225 Difference]: With dead ends: 89 [2022-03-17 18:43:19,671 INFO L226 Difference]: Without dead ends: 89 [2022-03-17 18:43:19,671 INFO L911 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 [2022-03-17 18:43:19,672 INFO L912 BasicCegarLoop]: 79 mSDtfsCounter, 78 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:19,672 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 186 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-17 18:43:19,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2022-03-17 18:43:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 59 states have internal predecessors, (65), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-17 18:43:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2022-03-17 18:43:19,674 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 62 [2022-03-17 18:43:19,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:19,674 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2022-03-17 18:43:19,674 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-03-17 18:43:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2022-03-17 18:43:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-17 18:43:19,674 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:19,674 INFO L500 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] [2022-03-17 18:43:19,674 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-17 18:43:19,675 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -747542986, now seen corresponding path program 1 times [2022-03-17 18:43:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:19,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667551435] [2022-03-17 18:43:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:19,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:19,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667551435] [2022-03-17 18:43:19,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667551435] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:19,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:19,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:19,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282606591] [2022-03-17 18:43:19,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:19,804 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:19,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:19,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:19,805 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 5 states have internal predecessors, (44), 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) [2022-03-17 18:43:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:19,916 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2022-03-17 18:43:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:43:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 5 states have internal predecessors, (44), 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 62 [2022-03-17 18:43:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:19,917 INFO L225 Difference]: With dead ends: 80 [2022-03-17 18:43:19,917 INFO L226 Difference]: Without dead ends: 80 [2022-03-17 18:43:19,917 INFO L911 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 [2022-03-17 18:43:19,918 INFO L912 BasicCegarLoop]: 64 mSDtfsCounter, 86 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:19,918 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 246 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-17 18:43:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-03-17 18:43:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.103448275862069) internal successors, (64), 59 states have internal predecessors, (64), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-17 18:43:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-03-17 18:43:19,920 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 62 [2022-03-17 18:43:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:19,920 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-03-17 18:43:19,920 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 5 states have internal predecessors, (44), 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) [2022-03-17 18:43:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-03-17 18:43:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 18:43:19,920 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:19,920 INFO L500 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] [2022-03-17 18:43:19,921 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-17 18:43:19,921 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:19,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1805188072, now seen corresponding path program 1 times [2022-03-17 18:43:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:19,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339425038] [2022-03-17 18:43:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:19,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:20,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:20,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339425038] [2022-03-17 18:43:20,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339425038] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:20,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:20,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:43:20,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919710405] [2022-03-17 18:43:20,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:20,035 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:43:20,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:20,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:43:20,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:43:20,035 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2022-03-17 18:43:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:20,143 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2022-03-17 18:43:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:43:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 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 63 [2022-03-17 18:43:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:20,143 INFO L225 Difference]: With dead ends: 77 [2022-03-17 18:43:20,144 INFO L226 Difference]: Without dead ends: 76 [2022-03-17 18:43:20,144 INFO L911 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 [2022-03-17 18:43:20,144 INFO L912 BasicCegarLoop]: 66 mSDtfsCounter, 92 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:20,144 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 137 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:20,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-17 18:43:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-03-17 18:43:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 states have internal predecessors, (59), 12 states have call successors, (12), 12 states have call predecessors, (12), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-17 18:43:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-03-17 18:43:20,146 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 63 [2022-03-17 18:43:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:20,146 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-03-17 18:43:20,146 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2022-03-17 18:43:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-03-17 18:43:20,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 18:43:20,147 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:20,147 INFO L500 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] [2022-03-17 18:43:20,147 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-17 18:43:20,147 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1247346341, now seen corresponding path program 1 times [2022-03-17 18:43:20,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:20,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915726947] [2022-03-17 18:43:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:20,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:20,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915726947] [2022-03-17 18:43:20,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915726947] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:20,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:20,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:43:20,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747581245] [2022-03-17 18:43:20,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:20,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:43:20,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:20,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:43:20,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:43:20,290 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:43:20,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:20,440 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2022-03-17 18:43:20,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:43:20,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-03-17 18:43:20,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:20,441 INFO L225 Difference]: With dead ends: 134 [2022-03-17 18:43:20,442 INFO L226 Difference]: Without dead ends: 134 [2022-03-17 18:43:20,442 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:43:20,442 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 159 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:20,442 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 184 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:20,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-03-17 18:43:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-03-17 18:43:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 99 states have (on average 1.0606060606060606) internal successors, (105), 99 states have internal predecessors, (105), 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) [2022-03-17 18:43:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2022-03-17 18:43:20,445 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 63 [2022-03-17 18:43:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:20,445 INFO L478 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2022-03-17 18:43:20,445 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:43:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2022-03-17 18:43:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 18:43:20,446 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:20,446 INFO L500 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] [2022-03-17 18:43:20,446 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-17 18:43:20,446 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash -359842660, now seen corresponding path program 1 times [2022-03-17 18:43:20,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:20,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139411701] [2022-03-17 18:43:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:20,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:20,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139411701] [2022-03-17 18:43:20,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139411701] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:20,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:20,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496527919] [2022-03-17 18:43:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:20,636 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:20,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:20,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:20,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:20,637 INFO L87 Difference]: Start difference. First operand 133 states and 138 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-03-17 18:43:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:20,792 INFO L93 Difference]: Finished difference Result 133 states and 136 transitions. [2022-03-17 18:43:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:43:20,792 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 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 63 [2022-03-17 18:43:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:20,793 INFO L225 Difference]: With dead ends: 133 [2022-03-17 18:43:20,793 INFO L226 Difference]: Without dead ends: 133 [2022-03-17 18:43:20,793 INFO L911 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 [2022-03-17 18:43:20,793 INFO L912 BasicCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:20,794 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 258 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:20,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-03-17 18:43:20,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-03-17 18:43:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 states have internal predecessors, (103), 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) [2022-03-17 18:43:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2022-03-17 18:43:20,796 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 63 [2022-03-17 18:43:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:20,796 INFO L478 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2022-03-17 18:43:20,796 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-03-17 18:43:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2022-03-17 18:43:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-17 18:43:20,797 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:20,797 INFO L500 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] [2022-03-17 18:43:20,797 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-17 18:43:20,797 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:20,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:20,797 INFO L85 PathProgramCache]: Analyzing trace with hash 544985405, now seen corresponding path program 1 times [2022-03-17 18:43:20,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:20,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923524271] [2022-03-17 18:43:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:20,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:43:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-17 18:43:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:20,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923524271] [2022-03-17 18:43:20,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923524271] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:20,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:20,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 18:43:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766518254] [2022-03-17 18:43:20,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:20,933 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 18:43:20,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:20,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 18:43:20,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:43:20,934 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-03-17 18:43:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:21,051 INFO L93 Difference]: Finished difference Result 104 states and 103 transitions. [2022-03-17 18:43:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:43:21,051 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 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 74 [2022-03-17 18:43:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:21,051 INFO L225 Difference]: With dead ends: 104 [2022-03-17 18:43:21,051 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 18:43:21,051 INFO L911 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 [2022-03-17 18:43:21,052 INFO L912 BasicCegarLoop]: 51 mSDtfsCounter, 31 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:21,052 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 143 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 18:43:21,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 18:43:21,052 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) [2022-03-17 18:43:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 18:43:21,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2022-03-17 18:43:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:21,053 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 18:43:21,053 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-03-17 18:43:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 18:43:21,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 18:43:21,055 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 18:43:21,055 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-17 18:43:21,057 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:21,058 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 18:43:21,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:43:21 BasicIcfg [2022-03-17 18:43:21,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 18:43:21,060 INFO L158 Benchmark]: Toolchain (without parser) took 8366.08ms. Allocated memory was 174.1MB in the beginning and 291.5MB in the end (delta: 117.4MB). Free memory was 124.9MB in the beginning and 137.6MB in the end (delta: -12.8MB). Peak memory consumption was 104.9MB. Max. memory is 8.0GB. [2022-03-17 18:43:21,060 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 18:43:21,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.19ms. Allocated memory is still 174.1MB. Free memory was 124.6MB in the beginning and 146.6MB in the end (delta: -21.9MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. [2022-03-17 18:43:21,060 INFO L158 Benchmark]: Boogie Preprocessor took 37.68ms. Allocated memory is still 174.1MB. Free memory was 146.3MB in the beginning and 144.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-17 18:43:21,060 INFO L158 Benchmark]: RCFGBuilder took 536.11ms. Allocated memory is still 174.1MB. Free memory was 144.3MB in the beginning and 121.4MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-03-17 18:43:21,061 INFO L158 Benchmark]: IcfgTransformer took 27.22ms. Allocated memory is still 174.1MB. Free memory was 121.4MB in the beginning and 118.6MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-17 18:43:21,061 INFO L158 Benchmark]: TraceAbstraction took 7520.45ms. Allocated memory was 174.1MB in the beginning and 291.5MB in the end (delta: 117.4MB). Free memory was 118.3MB in the beginning and 137.6MB in the end (delta: -19.3MB). Peak memory consumption was 97.7MB. Max. memory is 8.0GB. [2022-03-17 18:43:21,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 230.19ms. Allocated memory is still 174.1MB. Free memory was 124.6MB in the beginning and 146.6MB in the end (delta: -21.9MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.68ms. Allocated memory is still 174.1MB. Free memory was 146.3MB in the beginning and 144.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 536.11ms. Allocated memory is still 174.1MB. Free memory was 144.3MB in the beginning and 121.4MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * IcfgTransformer took 27.22ms. Allocated memory is still 174.1MB. Free memory was 121.4MB in the beginning and 118.6MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 7520.45ms. Allocated memory was 174.1MB in the beginning and 291.5MB in the end (delta: 117.4MB). Free memory was 118.3MB in the beginning and 137.6MB in the end (delta: -19.3MB). Peak memory consumption was 97.7MB. 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: 581]: 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 13 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3776 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3768 mSDsluCounter, 4877 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2712 mSDsCounter, 1055 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4849 IncrementalHoareTripleChecker+Invalid, 5904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1055 mSolverCounterUnsat, 2165 mSDtfsCounter, 4849 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 352 GetRequests, 165 SyntacticMatches, 4 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=3, InterpolantAutomatonStates: 152, 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, 18 MinimizatonAttempts, 147 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 929 NumberOfCodeBlocks, 929 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 911 ConstructedInterpolants, 0 QuantifiedInterpolants, 4122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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! [2022-03-17 18:43:21,085 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...