/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-34549b5 [2022-04-06 08:35:47,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 08:35:47,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 08:35:47,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 08:35:47,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 08:35:47,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 08:35:47,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 08:35:47,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 08:35:47,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 08:35:47,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 08:35:47,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 08:35:47,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 08:35:47,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 08:35:47,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 08:35:47,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 08:35:47,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 08:35:47,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 08:35:47,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 08:35:47,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 08:35:47,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 08:35:47,076 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 08:35:47,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 08:35:47,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 08:35:47,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 08:35:47,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 08:35:47,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 08:35:47,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 08:35:47,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 08:35:47,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 08:35:47,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 08:35:47,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 08:35:47,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 08:35:47,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 08:35:47,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 08:35:47,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 08:35:47,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 08:35:47,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 08:35:47,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 08:35:47,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 08:35:47,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 08:35:47,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 08:35:47,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 08:35:47,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 08:35:47,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 08:35:47,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 08:35:47,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 08:35:47,098 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 08:35:47,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 08:35:47,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 08:35:47,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 08:35:47,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 08:35:47,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 08:35:47,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 08:35:47,099 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 08:35:47,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 08:35:47,100 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 08:35:47,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 08:35:47,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 08:35:47,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 08:35:47,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 08:35:47,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 08:35:47,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:35:47,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 08:35:47,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 08:35:47,101 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 08:35:47,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 08:35:47,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 08:35:47,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 08:35:47,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 08:35:47,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 08:35:47,297 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 08:35:47,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-04-06 08:35:47,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb3e323f/b40d4ce8ef334be38b4bb4c7ca0885e9/FLAG7777e16e4 [2022-04-06 08:35:47,722 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 08:35:47,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-04-06 08:35:47,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb3e323f/b40d4ce8ef334be38b4bb4c7ca0885e9/FLAG7777e16e4 [2022-04-06 08:35:47,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb3e323f/b40d4ce8ef334be38b4bb4c7ca0885e9 [2022-04-06 08:35:47,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 08:35:47,757 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 08:35:47,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 08:35:47,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 08:35:47,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 08:35:47,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:35:47" (1/1) ... [2022-04-06 08:35:47,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27eab4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:47, skipping insertion in model container [2022-04-06 08:35:47,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:35:47" (1/1) ... [2022-04-06 08:35:47,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 08:35:47,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 08:35:48,003 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] [2022-04-06 08:35:48,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:35:48,010 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 08:35:48,057 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] [2022-04-06 08:35:48,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:35:48,066 INFO L208 MainTranslator]: Completed translation [2022-04-06 08:35:48,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48 WrapperNode [2022-04-06 08:35:48,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 08:35:48,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 08:35:48,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 08:35:48,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 08:35:48,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48" (1/1) ... [2022-04-06 08:35:48,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48" (1/1) ... [2022-04-06 08:35:48,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48" (1/1) ... [2022-04-06 08:35:48,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48" (1/1) ... [2022-04-06 08:35:48,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48" (1/1) ... [2022-04-06 08:35:48,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48" (1/1) ... [2022-04-06 08:35:48,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48" (1/1) ... [2022-04-06 08:35:48,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 08:35:48,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 08:35:48,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 08:35:48,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 08:35:48,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48" (1/1) ... [2022-04-06 08:35:48,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:35:48,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:35:48,123 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) [2022-04-06 08:35:48,128 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 [2022-04-06 08:35:48,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 08:35:48,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 08:35:48,153 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 08:35:48,154 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-06 08:35:48,154 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-06 08:35:48,154 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-04-06 08:35:48,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 08:35:48,155 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-06 08:35:48,155 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-06 08:35:48,159 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-06 08:35:48,159 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-06 08:35:48,159 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-06 08:35:48,159 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-04-06 08:35:48,159 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-06 08:35:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 08:35:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 08:35:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-06 08:35:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 08:35:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-06 08:35:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 08:35:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 08:35:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 08:35:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 08:35:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 08:35:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 08:35:48,225 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 08:35:48,226 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 08:35:48,289 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:35:48,346 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-04-06 08:35:48,346 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-04-06 08:35:48,347 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:35:48,404 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2022-04-06 08:35:48,404 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2022-04-06 08:35:48,415 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:35:48,427 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-06 08:35:48,427 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-06 08:35:48,434 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:35:48,499 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-04-06 08:35:48,499 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-04-06 08:35:48,503 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 08:35:48,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 08:35:48,507 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-04-06 08:35:48,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:35:48 BoogieIcfgContainer [2022-04-06 08:35:48,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 08:35:48,509 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 08:35:48,509 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 08:35:48,517 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 08:35:48,519 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:35:48" (1/1) ... [2022-04-06 08:35:48,520 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 08:35:48,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:35:48 BasicIcfg [2022-04-06 08:35:48,542 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 08:35:48,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 08:35:48,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 08:35:48,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 08:35:48,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 08:35:47" (1/4) ... [2022-04-06 08:35:48,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611f9965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:35:48, skipping insertion in model container [2022-04-06 08:35:48,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:35:48" (2/4) ... [2022-04-06 08:35:48,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611f9965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:35:48, skipping insertion in model container [2022-04-06 08:35:48,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:35:48" (3/4) ... [2022-04-06 08:35:48,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611f9965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:35:48, skipping insertion in model container [2022-04-06 08:35:48,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:35:48" (4/4) ... [2022-04-06 08:35:48,547 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.cJordan [2022-04-06 08:35:48,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 08:35:48,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 08:35:48,574 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 08:35:48,579 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 [2022-04-06 08:35:48,579 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 08:35:48,593 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) [2022-04-06 08:35:48,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-06 08:35:48,598 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:48,599 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:48,600 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:48,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:48,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1155157574, now seen corresponding path program 1 times [2022-04-06 08:35:48,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:48,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225402383] [2022-04-06 08:35:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:48,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:48,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:48,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225402383] [2022-04-06 08:35:48,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225402383] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:48,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:48,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 08:35:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540699180] [2022-04-06 08:35:48,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:48,984 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 08:35:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 08:35:49,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:35:49,004 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) [2022-04-06 08:35:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:49,332 INFO L93 Difference]: Finished difference Result 168 states and 236 transitions. [2022-04-06 08:35:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:35:49,333 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 [2022-04-06 08:35:49,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:49,342 INFO L225 Difference]: With dead ends: 168 [2022-04-06 08:35:49,342 INFO L226 Difference]: Without dead ends: 157 [2022-04-06 08:35:49,343 INFO L912 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 [2022-04-06 08:35:49,347 INFO L913 BasicCegarLoop]: 182 mSDtfsCounter, 180 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-04-06 08:35:49,348 INFO L914 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] [2022-04-06 08:35:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-04-06 08:35:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2022-04-06 08:35:49,388 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) [2022-04-06 08:35:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2022-04-06 08:35:49,398 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 20 [2022-04-06 08:35:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:49,398 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2022-04-06 08:35:49,398 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) [2022-04-06 08:35:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2022-04-06 08:35:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-06 08:35:49,403 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:49,403 INFO L499 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] [2022-04-06 08:35:49,404 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 08:35:49,404 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:49,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:49,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1515864402, now seen corresponding path program 1 times [2022-04-06 08:35:49,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:49,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831579811] [2022-04-06 08:35:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:49,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:49,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:49,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831579811] [2022-04-06 08:35:49,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831579811] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:49,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:49,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 08:35:49,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648630161] [2022-04-06 08:35:49,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:49,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 08:35:49,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:49,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 08:35:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:35:49,552 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) [2022-04-06 08:35:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:49,936 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2022-04-06 08:35:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 08:35:49,937 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 [2022-04-06 08:35:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:49,938 INFO L225 Difference]: With dead ends: 220 [2022-04-06 08:35:49,938 INFO L226 Difference]: Without dead ends: 219 [2022-04-06 08:35:49,938 INFO L912 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 [2022-04-06 08:35:49,939 INFO L913 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 [2022-04-06 08:35:49,940 INFO L914 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] [2022-04-06 08:35:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-04-06 08:35:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 195. [2022-04-06 08:35:49,949 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) [2022-04-06 08:35:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 259 transitions. [2022-04-06 08:35:49,955 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 259 transitions. Word has length 26 [2022-04-06 08:35:49,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:49,956 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 259 transitions. [2022-04-06 08:35:49,956 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) [2022-04-06 08:35:49,956 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 259 transitions. [2022-04-06 08:35:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-06 08:35:49,956 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:49,956 INFO L499 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] [2022-04-06 08:35:49,956 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 08:35:49,957 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash 252875622, now seen corresponding path program 1 times [2022-04-06 08:35:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:49,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685945832] [2022-04-06 08:35:49,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:49,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:50,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:50,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685945832] [2022-04-06 08:35:50,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685945832] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:50,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:50,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 08:35:50,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636004034] [2022-04-06 08:35:50,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:50,078 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 08:35:50,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 08:35:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:35:50,078 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) [2022-04-06 08:35:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:50,367 INFO L93 Difference]: Finished difference Result 254 states and 335 transitions. [2022-04-06 08:35:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 08:35:50,367 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 [2022-04-06 08:35:50,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:50,369 INFO L225 Difference]: With dead ends: 254 [2022-04-06 08:35:50,369 INFO L226 Difference]: Without dead ends: 254 [2022-04-06 08:35:50,370 INFO L912 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 [2022-04-06 08:35:50,371 INFO L913 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 [2022-04-06 08:35:50,371 INFO L914 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] [2022-04-06 08:35:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-04-06 08:35:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 217. [2022-04-06 08:35:50,379 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) [2022-04-06 08:35:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 289 transitions. [2022-04-06 08:35:50,381 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 289 transitions. Word has length 27 [2022-04-06 08:35:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:50,381 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 289 transitions. [2022-04-06 08:35:50,381 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) [2022-04-06 08:35:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 289 transitions. [2022-04-06 08:35:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-06 08:35:50,382 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:50,382 INFO L499 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] [2022-04-06 08:35:50,383 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 08:35:50,383 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -301837211, now seen corresponding path program 1 times [2022-04-06 08:35:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:50,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333952595] [2022-04-06 08:35:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:50,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:50,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333952595] [2022-04-06 08:35:50,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333952595] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:50,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:50,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 08:35:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921306406] [2022-04-06 08:35:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:50,471 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 08:35:50,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 08:35:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:35:50,471 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) [2022-04-06 08:35:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:50,797 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2022-04-06 08:35:50,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 08:35:50,798 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 [2022-04-06 08:35:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:50,799 INFO L225 Difference]: With dead ends: 217 [2022-04-06 08:35:50,799 INFO L226 Difference]: Without dead ends: 217 [2022-04-06 08:35:50,799 INFO L912 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 [2022-04-06 08:35:50,800 INFO L913 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 [2022-04-06 08:35:50,801 INFO L914 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] [2022-04-06 08:35:50,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-04-06 08:35:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-04-06 08:35:50,807 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) [2022-04-06 08:35:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 288 transitions. [2022-04-06 08:35:50,808 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 288 transitions. Word has length 37 [2022-04-06 08:35:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:50,808 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 288 transitions. [2022-04-06 08:35:50,808 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) [2022-04-06 08:35:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 288 transitions. [2022-04-06 08:35:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-06 08:35:50,809 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:50,809 INFO L499 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] [2022-04-06 08:35:50,810 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 08:35:50,810 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash -141227467, now seen corresponding path program 1 times [2022-04-06 08:35:50,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:50,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309501129] [2022-04-06 08:35:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:50,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:50,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:50,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309501129] [2022-04-06 08:35:50,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309501129] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:50,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:50,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 08:35:50,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556754401] [2022-04-06 08:35:50,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:50,941 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:35:50,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:35:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:35:50,942 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) [2022-04-06 08:35:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:51,238 INFO L93 Difference]: Finished difference Result 208 states and 271 transitions. [2022-04-06 08:35:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:51,238 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 [2022-04-06 08:35:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:51,239 INFO L225 Difference]: With dead ends: 208 [2022-04-06 08:35:51,239 INFO L226 Difference]: Without dead ends: 208 [2022-04-06 08:35:51,240 INFO L912 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 [2022-04-06 08:35:51,240 INFO L913 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, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:51,241 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 435 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:35:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-04-06 08:35:51,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2022-04-06 08:35:51,259 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) [2022-04-06 08:35:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2022-04-06 08:35:51,260 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 45 [2022-04-06 08:35:51,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:51,260 INFO L478 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2022-04-06 08:35:51,260 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) [2022-04-06 08:35:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2022-04-06 08:35:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 08:35:51,262 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:51,262 INFO L499 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] [2022-04-06 08:35:51,262 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 08:35:51,262 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:51,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:51,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1455239378, now seen corresponding path program 1 times [2022-04-06 08:35:51,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:51,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987301011] [2022-04-06 08:35:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 08:35:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-06 08:35:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:51,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:51,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987301011] [2022-04-06 08:35:51,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987301011] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:51,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:51,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 08:35:51,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496280683] [2022-04-06 08:35:51,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:51,374 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 08:35:51,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 08:35:51,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-06 08:35:51,374 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) [2022-04-06 08:35:51,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:51,651 INFO L93 Difference]: Finished difference Result 197 states and 257 transitions. [2022-04-06 08:35:51,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 08:35:51,652 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 [2022-04-06 08:35:51,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:51,653 INFO L225 Difference]: With dead ends: 197 [2022-04-06 08:35:51,653 INFO L226 Difference]: Without dead ends: 197 [2022-04-06 08:35:51,653 INFO L912 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 [2022-04-06 08:35:51,653 INFO L913 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 [2022-04-06 08:35:51,654 INFO L914 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] [2022-04-06 08:35:51,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-04-06 08:35:51,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2022-04-06 08:35:51,658 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) [2022-04-06 08:35:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 246 transitions. [2022-04-06 08:35:51,659 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 246 transitions. Word has length 51 [2022-04-06 08:35:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:51,659 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 246 transitions. [2022-04-06 08:35:51,659 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) [2022-04-06 08:35:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 246 transitions. [2022-04-06 08:35:51,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 08:35:51,660 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:51,660 INFO L499 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] [2022-04-06 08:35:51,660 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 08:35:51,660 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:51,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1069507529, now seen corresponding path program 1 times [2022-04-06 08:35:51,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:51,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519108228] [2022-04-06 08:35:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:51,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:35:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:51,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519108228] [2022-04-06 08:35:51,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519108228] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:51,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:51,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:51,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341244214] [2022-04-06 08:35:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:51,835 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:51,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:51,836 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) [2022-04-06 08:35:52,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:52,365 INFO L93 Difference]: Finished difference Result 210 states and 270 transitions. [2022-04-06 08:35:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 08:35:52,366 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 [2022-04-06 08:35:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:52,367 INFO L225 Difference]: With dead ends: 210 [2022-04-06 08:35:52,367 INFO L226 Difference]: Without dead ends: 210 [2022-04-06 08:35:52,367 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-04-06 08:35:52,367 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:52,368 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 494 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 08:35:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-04-06 08:35:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 188. [2022-04-06 08:35:52,372 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) [2022-04-06 08:35:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 244 transitions. [2022-04-06 08:35:52,376 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 244 transitions. Word has length 50 [2022-04-06 08:35:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:52,376 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 244 transitions. [2022-04-06 08:35:52,376 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) [2022-04-06 08:35:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 244 transitions. [2022-04-06 08:35:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 08:35:52,377 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:52,377 INFO L499 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] [2022-04-06 08:35:52,377 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 08:35:52,377 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1382255258, now seen corresponding path program 1 times [2022-04-06 08:35:52,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:52,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931973129] [2022-04-06 08:35:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:52,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:35:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:52,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:52,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931973129] [2022-04-06 08:35:52,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931973129] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:52,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:52,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 08:35:52,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540830253] [2022-04-06 08:35:52,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:52,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 08:35:52,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 08:35:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:35:52,551 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) [2022-04-06 08:35:52,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:52,944 INFO L93 Difference]: Finished difference Result 182 states and 235 transitions. [2022-04-06 08:35:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 08:35:52,944 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 [2022-04-06 08:35:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:52,945 INFO L225 Difference]: With dead ends: 182 [2022-04-06 08:35:52,945 INFO L226 Difference]: Without dead ends: 182 [2022-04-06 08:35:52,945 INFO L912 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 [2022-04-06 08:35:52,946 INFO L913 BasicCegarLoop]: 153 mSDtfsCounter, 481 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:52,946 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 379 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:35:52,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-04-06 08:35:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2022-04-06 08:35:52,949 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) [2022-04-06 08:35:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2022-04-06 08:35:52,950 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 52 [2022-04-06 08:35:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:52,950 INFO L478 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2022-04-06 08:35:52,950 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) [2022-04-06 08:35:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2022-04-06 08:35:52,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 08:35:52,951 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:52,951 INFO L499 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] [2022-04-06 08:35:52,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 08:35:52,951 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:52,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash -459288966, now seen corresponding path program 1 times [2022-04-06 08:35:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:52,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533042794] [2022-04-06 08:35:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:35:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:53,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533042794] [2022-04-06 08:35:53,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533042794] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:53,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:53,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 08:35:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345934548] [2022-04-06 08:35:53,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:53,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 08:35:53,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:53,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 08:35:53,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 08:35:53,064 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) [2022-04-06 08:35:53,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:53,287 INFO L93 Difference]: Finished difference Result 178 states and 228 transitions. [2022-04-06 08:35:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 08:35:53,287 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 [2022-04-06 08:35:53,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:53,288 INFO L225 Difference]: With dead ends: 178 [2022-04-06 08:35:53,288 INFO L226 Difference]: Without dead ends: 91 [2022-04-06 08:35:53,288 INFO L912 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 [2022-04-06 08:35:53,289 INFO L913 BasicCegarLoop]: 146 mSDtfsCounter, 400 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-04-06 08:35:53,289 INFO L914 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] [2022-04-06 08:35:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-04-06 08:35:53,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-04-06 08:35:53,291 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) [2022-04-06 08:35:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2022-04-06 08:35:53,291 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 52 [2022-04-06 08:35:53,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:53,291 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2022-04-06 08:35:53,292 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) [2022-04-06 08:35:53,292 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2022-04-06 08:35:53,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-06 08:35:53,292 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:53,292 INFO L499 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] [2022-04-06 08:35:53,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 08:35:53,292 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:53,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash -273247555, now seen corresponding path program 1 times [2022-04-06 08:35:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:53,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084646880] [2022-04-06 08:35:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:53,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084646880] [2022-04-06 08:35:53,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084646880] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:53,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:53,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45000648] [2022-04-06 08:35:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:53,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:53,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:53,455 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) [2022-04-06 08:35:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:53,742 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2022-04-06 08:35:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 08:35:53,742 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 [2022-04-06 08:35:53,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:53,743 INFO L225 Difference]: With dead ends: 91 [2022-04-06 08:35:53,743 INFO L226 Difference]: Without dead ends: 91 [2022-04-06 08:35:53,743 INFO L912 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 [2022-04-06 08:35:53,744 INFO L913 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 [2022-04-06 08:35:53,744 INFO L914 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] [2022-04-06 08:35:53,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-04-06 08:35:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-04-06 08:35:53,746 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) [2022-04-06 08:35:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2022-04-06 08:35:53,746 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 59 [2022-04-06 08:35:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:53,746 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2022-04-06 08:35:53,746 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) [2022-04-06 08:35:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2022-04-06 08:35:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-06 08:35:53,747 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:53,747 INFO L499 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] [2022-04-06 08:35:53,747 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 08:35:53,747 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash 366370572, now seen corresponding path program 1 times [2022-04-06 08:35:53,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:53,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427100569] [2022-04-06 08:35:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:53,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:53,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:53,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427100569] [2022-04-06 08:35:53,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427100569] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:53,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:53,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:53,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096208507] [2022-04-06 08:35:53,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:53,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:53,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:53,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:53,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:53,883 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) [2022-04-06 08:35:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:54,001 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2022-04-06 08:35:54,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:54,002 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 [2022-04-06 08:35:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:54,002 INFO L225 Difference]: With dead ends: 103 [2022-04-06 08:35:54,002 INFO L226 Difference]: Without dead ends: 93 [2022-04-06 08:35:54,002 INFO L912 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 [2022-04-06 08:35:54,003 INFO L913 BasicCegarLoop]: 72 mSDtfsCounter, 108 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:54,003 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 305 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:35:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-04-06 08:35:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2022-04-06 08:35:54,005 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) [2022-04-06 08:35:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2022-04-06 08:35:54,005 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 61 [2022-04-06 08:35:54,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:54,005 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2022-04-06 08:35:54,005 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) [2022-04-06 08:35:54,005 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2022-04-06 08:35:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 08:35:54,006 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:54,006 INFO L499 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] [2022-04-06 08:35:54,006 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 08:35:54,006 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:54,006 INFO L85 PathProgramCache]: Analyzing trace with hash -350640073, now seen corresponding path program 1 times [2022-04-06 08:35:54,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:54,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59196245] [2022-04-06 08:35:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:54,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:54,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59196245] [2022-04-06 08:35:54,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59196245] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:54,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:54,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 08:35:54,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768144347] [2022-04-06 08:35:54,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:54,105 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:35:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:35:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:35:54,105 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) [2022-04-06 08:35:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:54,193 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2022-04-06 08:35:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 08:35:54,194 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 [2022-04-06 08:35:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:54,194 INFO L225 Difference]: With dead ends: 78 [2022-04-06 08:35:54,194 INFO L226 Difference]: Without dead ends: 78 [2022-04-06 08:35:54,194 INFO L912 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 [2022-04-06 08:35:54,195 INFO L913 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 [2022-04-06 08:35:54,195 INFO L914 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] [2022-04-06 08:35:54,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-04-06 08:35:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-04-06 08:35:54,196 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) [2022-04-06 08:35:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-04-06 08:35:54,197 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 62 [2022-04-06 08:35:54,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:54,197 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-04-06 08:35:54,197 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) [2022-04-06 08:35:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-04-06 08:35:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 08:35:54,197 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:54,197 INFO L499 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] [2022-04-06 08:35:54,197 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-06 08:35:54,198 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash -57237066, now seen corresponding path program 1 times [2022-04-06 08:35:54,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:54,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126293481] [2022-04-06 08:35:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:54,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:54,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:54,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126293481] [2022-04-06 08:35:54,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126293481] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:54,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:54,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 08:35:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629078338] [2022-04-06 08:35:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:54,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:35:54,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:54,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:35:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:35:54,296 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) [2022-04-06 08:35:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:54,424 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2022-04-06 08:35:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 08:35:54,424 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 [2022-04-06 08:35:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:54,425 INFO L225 Difference]: With dead ends: 89 [2022-04-06 08:35:54,425 INFO L226 Difference]: Without dead ends: 89 [2022-04-06 08:35:54,425 INFO L912 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 [2022-04-06 08:35:54,425 INFO L913 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 [2022-04-06 08:35:54,426 INFO L914 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] [2022-04-06 08:35:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-04-06 08:35:54,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2022-04-06 08:35:54,429 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) [2022-04-06 08:35:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2022-04-06 08:35:54,430 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 62 [2022-04-06 08:35:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:54,430 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2022-04-06 08:35:54,430 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) [2022-04-06 08:35:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2022-04-06 08:35:54,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 08:35:54,430 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:54,430 INFO L499 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] [2022-04-06 08:35:54,430 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-06 08:35:54,430 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:54,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:54,431 INFO L85 PathProgramCache]: Analyzing trace with hash -747542986, now seen corresponding path program 1 times [2022-04-06 08:35:54,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:54,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478224406] [2022-04-06 08:35:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:54,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:54,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:54,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478224406] [2022-04-06 08:35:54,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478224406] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:54,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:54,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:54,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621921715] [2022-04-06 08:35:54,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:54,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:54,580 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) [2022-04-06 08:35:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:54,682 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2022-04-06 08:35:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:54,682 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 [2022-04-06 08:35:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:54,683 INFO L225 Difference]: With dead ends: 80 [2022-04-06 08:35:54,683 INFO L226 Difference]: Without dead ends: 80 [2022-04-06 08:35:54,683 INFO L912 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 [2022-04-06 08:35:54,683 INFO L913 BasicCegarLoop]: 64 mSDtfsCounter, 86 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:54,684 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 245 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:35:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-04-06 08:35:54,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-04-06 08:35:54,685 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) [2022-04-06 08:35:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-04-06 08:35:54,685 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 62 [2022-04-06 08:35:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:54,685 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-04-06 08:35:54,686 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) [2022-04-06 08:35:54,686 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-04-06 08:35:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 08:35:54,686 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:54,686 INFO L499 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] [2022-04-06 08:35:54,686 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-06 08:35:54,686 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:54,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1805188072, now seen corresponding path program 1 times [2022-04-06 08:35:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:54,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983934202] [2022-04-06 08:35:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:54,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:54,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983934202] [2022-04-06 08:35:54,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983934202] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:54,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:54,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 08:35:54,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037206525] [2022-04-06 08:35:54,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:54,805 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:35:54,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:35:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:35:54,805 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) [2022-04-06 08:35:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:54,907 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2022-04-06 08:35:54,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 08:35:54,908 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 [2022-04-06 08:35:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:54,908 INFO L225 Difference]: With dead ends: 77 [2022-04-06 08:35:54,908 INFO L226 Difference]: Without dead ends: 76 [2022-04-06 08:35:54,909 INFO L912 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 [2022-04-06 08:35:54,909 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 92 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-04-06 08:35:54,909 INFO L914 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] [2022-04-06 08:35:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-04-06 08:35:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-04-06 08:35:54,910 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) [2022-04-06 08:35:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-04-06 08:35:54,911 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 63 [2022-04-06 08:35:54,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:54,911 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-04-06 08:35:54,911 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) [2022-04-06 08:35:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-04-06 08:35:54,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 08:35:54,911 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:54,911 INFO L499 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] [2022-04-06 08:35:54,911 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-06 08:35:54,912 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1247346341, now seen corresponding path program 1 times [2022-04-06 08:35:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:54,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350694362] [2022-04-06 08:35:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:55,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350694362] [2022-04-06 08:35:55,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350694362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:55,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:55,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 08:35:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126259867] [2022-04-06 08:35:55,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:55,011 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:35:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:35:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:35:55,011 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) [2022-04-06 08:35:55,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:55,156 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2022-04-06 08:35:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 08:35:55,157 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 [2022-04-06 08:35:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:55,157 INFO L225 Difference]: With dead ends: 134 [2022-04-06 08:35:55,157 INFO L226 Difference]: Without dead ends: 134 [2022-04-06 08:35:55,157 INFO L912 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 [2022-04-06 08:35:55,158 INFO L913 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 [2022-04-06 08:35:55,158 INFO L914 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] [2022-04-06 08:35:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-04-06 08:35:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-04-06 08:35:55,160 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) [2022-04-06 08:35:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2022-04-06 08:35:55,161 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 63 [2022-04-06 08:35:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:55,161 INFO L478 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2022-04-06 08:35:55,161 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) [2022-04-06 08:35:55,161 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2022-04-06 08:35:55,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 08:35:55,161 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:55,161 INFO L499 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] [2022-04-06 08:35:55,161 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-06 08:35:55,161 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:55,162 INFO L85 PathProgramCache]: Analyzing trace with hash -359842660, now seen corresponding path program 1 times [2022-04-06 08:35:55,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:55,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805803883] [2022-04-06 08:35:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:55,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:55,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:55,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805803883] [2022-04-06 08:35:55,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805803883] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:55,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:55,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:55,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371064139] [2022-04-06 08:35:55,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:55,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:55,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:55,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:55,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:55,297 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) [2022-04-06 08:35:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:55,450 INFO L93 Difference]: Finished difference Result 133 states and 136 transitions. [2022-04-06 08:35:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:55,450 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 [2022-04-06 08:35:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:55,451 INFO L225 Difference]: With dead ends: 133 [2022-04-06 08:35:55,451 INFO L226 Difference]: Without dead ends: 133 [2022-04-06 08:35:55,451 INFO L912 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 [2022-04-06 08:35:55,451 INFO L913 BasicCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:55,451 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 257 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:35:55,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-04-06 08:35:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-04-06 08:35:55,471 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) [2022-04-06 08:35:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2022-04-06 08:35:55,472 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 63 [2022-04-06 08:35:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:55,472 INFO L478 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2022-04-06 08:35:55,472 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) [2022-04-06 08:35:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2022-04-06 08:35:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 08:35:55,473 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:55,473 INFO L499 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] [2022-04-06 08:35:55,473 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-06 08:35:55,473 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash 544985405, now seen corresponding path program 1 times [2022-04-06 08:35:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:55,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845708761] [2022-04-06 08:35:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:55,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-06 08:35:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:55,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845708761] [2022-04-06 08:35:55,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845708761] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:55,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:55,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 08:35:55,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093136396] [2022-04-06 08:35:55,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:55,592 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 08:35:55,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 08:35:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-04-06 08:35:55,593 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) [2022-04-06 08:35:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:55,694 INFO L93 Difference]: Finished difference Result 104 states and 103 transitions. [2022-04-06 08:35:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 08:35:55,695 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 [2022-04-06 08:35:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:55,695 INFO L225 Difference]: With dead ends: 104 [2022-04-06 08:35:55,695 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 08:35:55,695 INFO L912 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 [2022-04-06 08:35:55,696 INFO L913 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 [2022-04-06 08:35:55,696 INFO L914 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] [2022-04-06 08:35:55,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 08:35:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 08:35:55,696 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) [2022-04-06 08:35:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 08:35:55,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2022-04-06 08:35:55,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:55,696 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 08:35:55,696 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) [2022-04-06 08:35:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 08:35:55,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 08:35:55,698 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 08:35:55,699 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-06 08:35:55,701 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:55,702 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 08:35:55,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:35:55 BasicIcfg [2022-04-06 08:35:55,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 08:35:55,703 INFO L158 Benchmark]: Toolchain (without parser) took 7946.47ms. Allocated memory was 189.8MB in the beginning and 316.7MB in the end (delta: 126.9MB). Free memory was 141.0MB in the beginning and 250.4MB in the end (delta: -109.4MB). Peak memory consumption was 18.7MB. Max. memory is 8.0GB. [2022-04-06 08:35:55,703 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 08:35:55,704 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.47ms. Allocated memory is still 189.8MB. Free memory was 140.9MB in the beginning and 162.0MB in the end (delta: -21.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-06 08:35:55,704 INFO L158 Benchmark]: Boogie Preprocessor took 30.60ms. Allocated memory is still 189.8MB. Free memory was 162.0MB in the beginning and 160.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 08:35:55,704 INFO L158 Benchmark]: RCFGBuilder took 411.28ms. Allocated memory is still 189.8MB. Free memory was 160.0MB in the beginning and 136.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-04-06 08:35:55,704 INFO L158 Benchmark]: IcfgTransformer took 32.74ms. Allocated memory is still 189.8MB. Free memory was 136.9MB in the beginning and 134.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 08:35:55,704 INFO L158 Benchmark]: TraceAbstraction took 7159.81ms. Allocated memory was 189.8MB in the beginning and 316.7MB in the end (delta: 126.9MB). Free memory was 133.7MB in the beginning and 250.4MB in the end (delta: -116.7MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2022-04-06 08:35:55,705 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 189.8MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 307.47ms. Allocated memory is still 189.8MB. Free memory was 140.9MB in the beginning and 162.0MB in the end (delta: -21.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.60ms. Allocated memory is still 189.8MB. Free memory was 162.0MB in the beginning and 160.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 411.28ms. Allocated memory is still 189.8MB. Free memory was 160.0MB in the beginning and 136.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * IcfgTransformer took 32.74ms. Allocated memory is still 189.8MB. Free memory was 136.9MB in the beginning and 134.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 7159.81ms. Allocated memory was 189.8MB in the beginning and 316.7MB in the end (delta: 126.9MB). Free memory was 133.7MB in the beginning and 250.4MB in the end (delta: -116.7MB). Peak memory consumption was 11.6MB. 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: 7.1s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3776 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3768 mSDsluCounter, 4874 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2709 mSDsCounter, 1055 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4852 IncrementalHoareTripleChecker+Invalid, 5907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1055 mSolverCounterUnsat, 2165 mSDtfsCounter, 4852 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, 2.0s 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, 2.2s 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! [2022-04-06 08:35:55,728 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...