/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-6c470ae [2022-02-15 00:38:02,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 00:38:02,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 00:38:02,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 00:38:02,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 00:38:02,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 00:38:02,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 00:38:02,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 00:38:02,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 00:38:02,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 00:38:02,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 00:38:02,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 00:38:02,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 00:38:03,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 00:38:03,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 00:38:03,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 00:38:03,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 00:38:03,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 00:38:03,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 00:38:03,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 00:38:03,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 00:38:03,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 00:38:03,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 00:38:03,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 00:38:03,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-15 00:38:03,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-15 00:38:03,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-15 00:38:03,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-15 00:38:03,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-15 00:38:03,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-15 00:38:03,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-15 00:38:03,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-15 00:38:03,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-15 00:38:03,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-15 00:38:03,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-15 00:38:03,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-15 00:38:03,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-15 00:38:03,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-15 00:38:03,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 00:38:03,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 00:38:03,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 00:38:03,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-15 00:38:03,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 00:38:03,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 00:38:03,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 00:38:03,034 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 00:38:03,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 00:38:03,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 00:38:03,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 00:38:03,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 00:38:03,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 00:38:03,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 00:38:03,035 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 00:38:03,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 00:38:03,035 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 00:38:03,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 00:38:03,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 00:38:03,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 00:38:03,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 00:38:03,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 00:38:03,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:38:03,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 00:38:03,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 00:38:03,036 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-15 00:38:03,036 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 00:38:03,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 00:38:03,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 00:38:03,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 00:38:03,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 00:38:03,220 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 00:38:03,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-02-15 00:38:03,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04271aba7/ab26437942c6456ebdf9c6e6b4940d87/FLAG4ff75ac7d [2022-02-15 00:38:03,594 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 00:38:03,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-02-15 00:38:03,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04271aba7/ab26437942c6456ebdf9c6e6b4940d87/FLAG4ff75ac7d [2022-02-15 00:38:04,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04271aba7/ab26437942c6456ebdf9c6e6b4940d87 [2022-02-15 00:38:04,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 00:38:04,026 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 00:38:04,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 00:38:04,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 00:38:04,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 00:38:04,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b11d971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04, skipping insertion in model container [2022-02-15 00:38:04,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 00:38:04,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 00:38:04,224 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] [2022-02-15 00:38:04,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:38:04,232 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 00:38:04,296 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] [2022-02-15 00:38:04,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:38:04,317 INFO L208 MainTranslator]: Completed translation [2022-02-15 00:38:04,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04 WrapperNode [2022-02-15 00:38:04,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 00:38:04,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 00:38:04,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 00:38:04,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 00:38:04,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 00:38:04,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 00:38:04,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 00:38:04,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 00:38:04,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:38:04,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:38:04,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 00:38:04,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 00:38:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 00:38:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 00:38:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 00:38:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-15 00:38:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-15 00:38:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-02-15 00:38:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 00:38:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-15 00:38:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-15 00:38:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-15 00:38:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-15 00:38:04,447 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-15 00:38:04,447 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-02-15 00:38:04,447 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-15 00:38:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 00:38:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-15 00:38:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 00:38:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 00:38:04,558 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 00:38:04,559 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 00:38:04,648 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:04,691 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-02-15 00:38:04,692 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-02-15 00:38:04,692 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:04,709 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2022-02-15 00:38:04,709 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2022-02-15 00:38:04,733 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:04,744 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-15 00:38:04,745 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-15 00:38:04,766 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:38:04,832 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-15 00:38:04,832 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-15 00:38:04,836 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 00:38:04,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 00:38:04,855 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 00:38:04,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:38:04 BoogieIcfgContainer [2022-02-15 00:38:04,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 00:38:04,858 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-15 00:38:04,858 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-15 00:38:04,859 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-15 00:38:04,861 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:38:04" (1/1) ... [2022-02-15 00:38:04,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:38:04 BasicIcfg [2022-02-15 00:38:04,895 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-15 00:38:04,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 00:38:04,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 00:38:04,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 00:38:04,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:38:04" (1/4) ... [2022-02-15 00:38:04,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aed4d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:38:04, skipping insertion in model container [2022-02-15 00:38:04,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:38:04" (2/4) ... [2022-02-15 00:38:04,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aed4d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:38:04, skipping insertion in model container [2022-02-15 00:38:04,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:38:04" (3/4) ... [2022-02-15 00:38:04,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aed4d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:38:04, skipping insertion in model container [2022-02-15 00:38:04,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:38:04" (4/4) ... [2022-02-15 00:38:04,904 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.cJordan [2022-02-15 00:38:04,907 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-15 00:38:04,907 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 00:38:04,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 00:38:04,947 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-15 00:38:04,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 00:38:04,958 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) [2022-02-15 00:38:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 00:38:04,963 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:04,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:04,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:04,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1155157574, now seen corresponding path program 1 times [2022-02-15 00:38:04,973 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:04,973 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582404237] [2022-02-15 00:38:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:05,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:05,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582404237] [2022-02-15 00:38:05,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582404237] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:05,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:05,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 00:38:05,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025178040] [2022-02-15 00:38:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:05,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 00:38:05,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 00:38:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:38:05,219 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) [2022-02-15 00:38:05,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:05,607 INFO L93 Difference]: Finished difference Result 168 states and 236 transitions. [2022-02-15 00:38:05,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:38:05,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-02-15 00:38:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:05,617 INFO L225 Difference]: With dead ends: 168 [2022-02-15 00:38:05,617 INFO L226 Difference]: Without dead ends: 157 [2022-02-15 00:38:05,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:38:05,621 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 180 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:05,621 INFO L934 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] [2022-02-15 00:38:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-02-15 00:38:05,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2022-02-15 00:38:05,658 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) [2022-02-15 00:38:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2022-02-15 00:38:05,660 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 20 [2022-02-15 00:38:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:05,660 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2022-02-15 00:38:05,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 00:38:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2022-02-15 00:38:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 00:38:05,661 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:05,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:05,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 00:38:05,662 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1515864402, now seen corresponding path program 1 times [2022-02-15 00:38:05,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:05,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88514083] [2022-02-15 00:38:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:05,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:05,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88514083] [2022-02-15 00:38:05,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88514083] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:05,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:05,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:38:05,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839496703] [2022-02-15 00:38:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:05,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:38:05,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:38:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:38:05,812 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) [2022-02-15 00:38:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:06,200 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2022-02-15 00:38:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 00:38:06,201 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 [2022-02-15 00:38:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:06,203 INFO L225 Difference]: With dead ends: 220 [2022-02-15 00:38:06,203 INFO L226 Difference]: Without dead ends: 219 [2022-02-15 00:38:06,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 00:38:06,204 INFO L933 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 [2022-02-15 00:38:06,204 INFO L934 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] [2022-02-15 00:38:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-02-15 00:38:06,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 195. [2022-02-15 00:38:06,214 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) [2022-02-15 00:38:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 259 transitions. [2022-02-15 00:38:06,216 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 259 transitions. Word has length 26 [2022-02-15 00:38:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:06,216 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 259 transitions. [2022-02-15 00:38:06,216 INFO L471 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) [2022-02-15 00:38:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 259 transitions. [2022-02-15 00:38:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 00:38:06,216 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:06,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:06,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 00:38:06,217 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:06,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:06,217 INFO L85 PathProgramCache]: Analyzing trace with hash 252875622, now seen corresponding path program 1 times [2022-02-15 00:38:06,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:06,218 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460768236] [2022-02-15 00:38:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:06,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:06,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:06,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460768236] [2022-02-15 00:38:06,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460768236] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:06,338 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:06,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:38:06,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215011272] [2022-02-15 00:38:06,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:06,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:38:06,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:06,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:38:06,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:38:06,339 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) [2022-02-15 00:38:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:06,609 INFO L93 Difference]: Finished difference Result 254 states and 335 transitions. [2022-02-15 00:38:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 00:38:06,610 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 [2022-02-15 00:38:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:06,611 INFO L225 Difference]: With dead ends: 254 [2022-02-15 00:38:06,611 INFO L226 Difference]: Without dead ends: 254 [2022-02-15 00:38:06,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 00:38:06,612 INFO L933 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 [2022-02-15 00:38:06,613 INFO L934 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] [2022-02-15 00:38:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-02-15 00:38:06,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 217. [2022-02-15 00:38:06,620 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) [2022-02-15 00:38:06,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 289 transitions. [2022-02-15 00:38:06,621 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 289 transitions. Word has length 27 [2022-02-15 00:38:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:06,622 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 289 transitions. [2022-02-15 00:38:06,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 00:38:06,622 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 289 transitions. [2022-02-15 00:38:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 00:38:06,623 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:06,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:06,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 00:38:06,623 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:06,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:06,623 INFO L85 PathProgramCache]: Analyzing trace with hash -301837211, now seen corresponding path program 1 times [2022-02-15 00:38:06,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:06,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87879077] [2022-02-15 00:38:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:06,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:06,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:06,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87879077] [2022-02-15 00:38:06,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87879077] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:06,723 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:06,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:38:06,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333451892] [2022-02-15 00:38:06,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:06,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:38:06,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:38:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:38:06,725 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) [2022-02-15 00:38:07,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:07,098 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2022-02-15 00:38:07,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 00:38:07,099 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 [2022-02-15 00:38:07,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:07,100 INFO L225 Difference]: With dead ends: 217 [2022-02-15 00:38:07,100 INFO L226 Difference]: Without dead ends: 217 [2022-02-15 00:38:07,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 00:38:07,101 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 92 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-02-15 00:38:07,101 INFO L934 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] [2022-02-15 00:38:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-02-15 00:38:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-02-15 00:38:07,108 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) [2022-02-15 00:38:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 288 transitions. [2022-02-15 00:38:07,109 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 288 transitions. Word has length 37 [2022-02-15 00:38:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:07,109 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 288 transitions. [2022-02-15 00:38:07,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (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) [2022-02-15 00:38:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 288 transitions. [2022-02-15 00:38:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 00:38:07,110 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:07,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:07,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 00:38:07,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash -141227467, now seen corresponding path program 1 times [2022-02-15 00:38:07,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:07,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043156509] [2022-02-15 00:38:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:07,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:07,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:07,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043156509] [2022-02-15 00:38:07,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043156509] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:07,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:07,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:38:07,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160742666] [2022-02-15 00:38:07,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:07,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:38:07,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:38:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:07,266 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) [2022-02-15 00:38:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:07,574 INFO L93 Difference]: Finished difference Result 208 states and 271 transitions. [2022-02-15 00:38:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:07,575 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 [2022-02-15 00:38:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:07,576 INFO L225 Difference]: With dead ends: 208 [2022-02-15 00:38:07,576 INFO L226 Difference]: Without dead ends: 208 [2022-02-15 00:38:07,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-02-15 00:38:07,577 INFO L933 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 [2022-02-15 00:38:07,577 INFO L934 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] [2022-02-15 00:38:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-02-15 00:38:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2022-02-15 00:38:07,581 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) [2022-02-15 00:38:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2022-02-15 00:38:07,582 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 45 [2022-02-15 00:38:07,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:07,582 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2022-02-15 00:38:07,583 INFO L471 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) [2022-02-15 00:38:07,583 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2022-02-15 00:38:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 00:38:07,584 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:07,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:07,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 00:38:07,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:07,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1455239378, now seen corresponding path program 1 times [2022-02-15 00:38:07,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:07,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628694897] [2022-02-15 00:38:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:07,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 00:38:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 00:38:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:07,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:07,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628694897] [2022-02-15 00:38:07,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628694897] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:07,692 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:07,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 00:38:07,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113829541] [2022-02-15 00:38:07,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:07,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 00:38:07,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:07,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 00:38:07,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 00:38:07,693 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) [2022-02-15 00:38:07,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:07,972 INFO L93 Difference]: Finished difference Result 197 states and 257 transitions. [2022-02-15 00:38:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:38:07,972 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 [2022-02-15 00:38:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:07,973 INFO L225 Difference]: With dead ends: 197 [2022-02-15 00:38:07,973 INFO L226 Difference]: Without dead ends: 197 [2022-02-15 00:38:07,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:38:07,974 INFO L933 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 [2022-02-15 00:38:07,975 INFO L934 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] [2022-02-15 00:38:07,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-02-15 00:38:07,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2022-02-15 00:38:07,978 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) [2022-02-15 00:38:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 246 transitions. [2022-02-15 00:38:07,979 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 246 transitions. Word has length 51 [2022-02-15 00:38:07,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:07,980 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 246 transitions. [2022-02-15 00:38:07,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 00:38:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 246 transitions. [2022-02-15 00:38:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 00:38:07,981 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:07,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:07,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 00:38:07,981 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:07,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:07,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1069507529, now seen corresponding path program 1 times [2022-02-15 00:38:07,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:07,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754556207] [2022-02-15 00:38:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:07,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:08,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:08,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754556207] [2022-02-15 00:38:08,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754556207] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:08,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:08,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:08,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463796451] [2022-02-15 00:38:08,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:08,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:08,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:08,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:08,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:08,145 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) [2022-02-15 00:38:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:08,693 INFO L93 Difference]: Finished difference Result 210 states and 270 transitions. [2022-02-15 00:38:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 00:38:08,694 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 [2022-02-15 00:38:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:08,695 INFO L225 Difference]: With dead ends: 210 [2022-02-15 00:38:08,695 INFO L226 Difference]: Without dead ends: 210 [2022-02-15 00:38:08,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-02-15 00:38:08,696 INFO L933 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 [2022-02-15 00:38:08,696 INFO L934 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] [2022-02-15 00:38:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-02-15 00:38:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 188. [2022-02-15 00:38:08,700 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) [2022-02-15 00:38:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 244 transitions. [2022-02-15 00:38:08,700 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 244 transitions. Word has length 50 [2022-02-15 00:38:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:08,701 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 244 transitions. [2022-02-15 00:38:08,701 INFO L471 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) [2022-02-15 00:38:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 244 transitions. [2022-02-15 00:38:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-15 00:38:08,702 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:08,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:08,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 00:38:08,702 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1382255258, now seen corresponding path program 1 times [2022-02-15 00:38:08,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:08,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846151581] [2022-02-15 00:38:08,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:08,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:08,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:08,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846151581] [2022-02-15 00:38:08,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846151581] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:08,872 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:08,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 00:38:08,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75060757] [2022-02-15 00:38:08,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:08,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:38:08,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:08,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:38:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:08,873 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) [2022-02-15 00:38:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:09,284 INFO L93 Difference]: Finished difference Result 182 states and 235 transitions. [2022-02-15 00:38:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 00:38:09,284 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 [2022-02-15 00:38:09,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:09,285 INFO L225 Difference]: With dead ends: 182 [2022-02-15 00:38:09,285 INFO L226 Difference]: Without dead ends: 182 [2022-02-15 00:38:09,285 INFO L932 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 [2022-02-15 00:38:09,287 INFO L933 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, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:09,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 379 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 00:38:09,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-15 00:38:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2022-02-15 00:38:09,295 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) [2022-02-15 00:38:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2022-02-15 00:38:09,295 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 52 [2022-02-15 00:38:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:09,296 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2022-02-15 00:38:09,296 INFO L471 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) [2022-02-15 00:38:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2022-02-15 00:38:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-15 00:38:09,296 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:09,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:09,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 00:38:09,297 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:09,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:09,297 INFO L85 PathProgramCache]: Analyzing trace with hash -459288966, now seen corresponding path program 1 times [2022-02-15 00:38:09,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:09,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351678273] [2022-02-15 00:38:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:09,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:09,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:09,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351678273] [2022-02-15 00:38:09,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351678273] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:09,443 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:09,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 00:38:09,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145012601] [2022-02-15 00:38:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:09,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 00:38:09,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 00:38:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:38:09,446 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) [2022-02-15 00:38:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:09,662 INFO L93 Difference]: Finished difference Result 178 states and 228 transitions. [2022-02-15 00:38:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 00:38:09,662 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 [2022-02-15 00:38:09,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:09,663 INFO L225 Difference]: With dead ends: 178 [2022-02-15 00:38:09,663 INFO L226 Difference]: Without dead ends: 91 [2022-02-15 00:38:09,664 INFO L932 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 [2022-02-15 00:38:09,665 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 400 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:09,665 INFO L934 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] [2022-02-15 00:38:09,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-15 00:38:09,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-02-15 00:38:09,671 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) [2022-02-15 00:38:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2022-02-15 00:38:09,671 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 52 [2022-02-15 00:38:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:09,671 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2022-02-15 00:38:09,672 INFO L471 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) [2022-02-15 00:38:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2022-02-15 00:38:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 00:38:09,673 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:09,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:09,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 00:38:09,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:09,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:09,674 INFO L85 PathProgramCache]: Analyzing trace with hash -273247555, now seen corresponding path program 1 times [2022-02-15 00:38:09,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:09,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571123128] [2022-02-15 00:38:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:09,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:09,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:09,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571123128] [2022-02-15 00:38:09,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571123128] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:09,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:09,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:09,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553891719] [2022-02-15 00:38:09,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:09,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:09,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:09,865 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) [2022-02-15 00:38:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:10,126 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2022-02-15 00:38:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 00:38:10,126 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 [2022-02-15 00:38:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:10,127 INFO L225 Difference]: With dead ends: 91 [2022-02-15 00:38:10,127 INFO L226 Difference]: Without dead ends: 91 [2022-02-15 00:38:10,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:10,128 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 96 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-02-15 00:38:10,129 INFO L934 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] [2022-02-15 00:38:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-15 00:38:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-02-15 00:38:10,131 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) [2022-02-15 00:38:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2022-02-15 00:38:10,131 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 59 [2022-02-15 00:38:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:10,131 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2022-02-15 00:38:10,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 00:38:10,131 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2022-02-15 00:38:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 00:38:10,132 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:10,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:10,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 00:38:10,133 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:10,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:10,133 INFO L85 PathProgramCache]: Analyzing trace with hash 366370572, now seen corresponding path program 1 times [2022-02-15 00:38:10,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:10,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165428558] [2022-02-15 00:38:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:10,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:10,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:10,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165428558] [2022-02-15 00:38:10,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165428558] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:10,302 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:10,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:10,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62917906] [2022-02-15 00:38:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:10,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:10,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:10,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:10,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:10,303 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) [2022-02-15 00:38:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:10,465 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2022-02-15 00:38:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:10,465 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 [2022-02-15 00:38:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:10,466 INFO L225 Difference]: With dead ends: 103 [2022-02-15 00:38:10,466 INFO L226 Difference]: Without dead ends: 93 [2022-02-15 00:38:10,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:10,467 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 108 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:10,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 306 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:10,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-15 00:38:10,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2022-02-15 00:38:10,470 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) [2022-02-15 00:38:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2022-02-15 00:38:10,470 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 61 [2022-02-15 00:38:10,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:10,470 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2022-02-15 00:38:10,470 INFO L471 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) [2022-02-15 00:38:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2022-02-15 00:38:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 00:38:10,471 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:10,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:10,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 00:38:10,471 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash -350640073, now seen corresponding path program 1 times [2022-02-15 00:38:10,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:10,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286688387] [2022-02-15 00:38:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:10,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:10,613 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:10,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286688387] [2022-02-15 00:38:10,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286688387] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:10,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:10,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:38:10,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484581359] [2022-02-15 00:38:10,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:10,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:38:10,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:10,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:38:10,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:10,615 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) [2022-02-15 00:38:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:10,735 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2022-02-15 00:38:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 00:38:10,736 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 [2022-02-15 00:38:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:10,737 INFO L225 Difference]: With dead ends: 78 [2022-02-15 00:38:10,737 INFO L226 Difference]: Without dead ends: 78 [2022-02-15 00:38:10,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:10,738 INFO L933 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 [2022-02-15 00:38:10,738 INFO L934 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] [2022-02-15 00:38:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-15 00:38:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-02-15 00:38:10,740 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) [2022-02-15 00:38:10,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-02-15 00:38:10,740 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 62 [2022-02-15 00:38:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:10,741 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-02-15 00:38:10,741 INFO L471 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) [2022-02-15 00:38:10,741 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-02-15 00:38:10,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 00:38:10,741 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:10,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:10,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 00:38:10,742 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:10,742 INFO L85 PathProgramCache]: Analyzing trace with hash -57237066, now seen corresponding path program 1 times [2022-02-15 00:38:10,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:10,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628652567] [2022-02-15 00:38:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:10,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:10,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:10,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628652567] [2022-02-15 00:38:10,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628652567] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:10,873 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:10,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:38:10,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871207854] [2022-02-15 00:38:10,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:10,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:38:10,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:38:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:10,874 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) [2022-02-15 00:38:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:10,985 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2022-02-15 00:38:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:38:10,985 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 [2022-02-15 00:38:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:10,986 INFO L225 Difference]: With dead ends: 89 [2022-02-15 00:38:10,986 INFO L226 Difference]: Without dead ends: 89 [2022-02-15 00:38:10,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:38:10,986 INFO L933 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 [2022-02-15 00:38:10,987 INFO L934 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] [2022-02-15 00:38:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-15 00:38:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2022-02-15 00:38:10,988 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) [2022-02-15 00:38:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2022-02-15 00:38:10,989 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 62 [2022-02-15 00:38:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:10,989 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2022-02-15 00:38:10,989 INFO L471 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) [2022-02-15 00:38:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2022-02-15 00:38:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 00:38:10,989 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:10,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:10,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 00:38:10,990 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:10,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash -747542986, now seen corresponding path program 1 times [2022-02-15 00:38:10,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:10,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788947834] [2022-02-15 00:38:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:10,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:11,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:11,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788947834] [2022-02-15 00:38:11,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788947834] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:11,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:11,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:11,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160323697] [2022-02-15 00:38:11,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:11,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:11,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:11,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:11,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:11,161 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) [2022-02-15 00:38:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:11,322 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2022-02-15 00:38:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:11,323 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 [2022-02-15 00:38:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:11,323 INFO L225 Difference]: With dead ends: 80 [2022-02-15 00:38:11,323 INFO L226 Difference]: Without dead ends: 80 [2022-02-15 00:38:11,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:11,324 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 86 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:11,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 246 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-15 00:38:11,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-02-15 00:38:11,325 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) [2022-02-15 00:38:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-02-15 00:38:11,326 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 62 [2022-02-15 00:38:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:11,326 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-02-15 00:38:11,326 INFO L471 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) [2022-02-15 00:38:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-02-15 00:38:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 00:38:11,327 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:11,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:11,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 00:38:11,327 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1805188072, now seen corresponding path program 1 times [2022-02-15 00:38:11,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:11,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14852290] [2022-02-15 00:38:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:11,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:11,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14852290] [2022-02-15 00:38:11,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14852290] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:11,523 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:11,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:38:11,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488257275] [2022-02-15 00:38:11,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:11,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:38:11,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:11,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:38:11,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:11,524 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) [2022-02-15 00:38:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:11,612 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2022-02-15 00:38:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:38:11,612 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 [2022-02-15 00:38:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:11,614 INFO L225 Difference]: With dead ends: 77 [2022-02-15 00:38:11,614 INFO L226 Difference]: Without dead ends: 76 [2022-02-15 00:38:11,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:11,616 INFO L933 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 [2022-02-15 00:38:11,616 INFO L934 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] [2022-02-15 00:38:11,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-15 00:38:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-02-15 00:38:11,617 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) [2022-02-15 00:38:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-02-15 00:38:11,618 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 63 [2022-02-15 00:38:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:11,618 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-02-15 00:38:11,618 INFO L471 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) [2022-02-15 00:38:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-02-15 00:38:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 00:38:11,618 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:11,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:11,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 00:38:11,619 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:11,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1247346341, now seen corresponding path program 1 times [2022-02-15 00:38:11,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:11,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148927315] [2022-02-15 00:38:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:11,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:11,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148927315] [2022-02-15 00:38:11,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148927315] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:11,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:11,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:38:11,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891410504] [2022-02-15 00:38:11,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:11,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:38:11,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:11,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:38:11,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:38:11,732 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) [2022-02-15 00:38:11,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:11,868 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2022-02-15 00:38:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 00:38:11,868 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 [2022-02-15 00:38:11,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:11,868 INFO L225 Difference]: With dead ends: 134 [2022-02-15 00:38:11,869 INFO L226 Difference]: Without dead ends: 134 [2022-02-15 00:38:11,869 INFO L932 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 [2022-02-15 00:38:11,869 INFO L933 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 [2022-02-15 00:38:11,869 INFO L934 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] [2022-02-15 00:38:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-15 00:38:11,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-02-15 00:38:11,872 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) [2022-02-15 00:38:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2022-02-15 00:38:11,873 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 63 [2022-02-15 00:38:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:11,873 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2022-02-15 00:38:11,873 INFO L471 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) [2022-02-15 00:38:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2022-02-15 00:38:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 00:38:11,874 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:11,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:11,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 00:38:11,874 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:11,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash -359842660, now seen corresponding path program 1 times [2022-02-15 00:38:11,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:11,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968790326] [2022-02-15 00:38:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:11,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:12,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:12,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968790326] [2022-02-15 00:38:12,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968790326] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:12,020 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:12,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:12,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675643863] [2022-02-15 00:38:12,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:12,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:12,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:12,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:12,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:12,021 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) [2022-02-15 00:38:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:12,173 INFO L93 Difference]: Finished difference Result 133 states and 136 transitions. [2022-02-15 00:38:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:12,174 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 [2022-02-15 00:38:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:12,175 INFO L225 Difference]: With dead ends: 133 [2022-02-15 00:38:12,175 INFO L226 Difference]: Without dead ends: 133 [2022-02-15 00:38:12,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:12,176 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:12,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 258 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:38:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-02-15 00:38:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-02-15 00:38:12,179 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) [2022-02-15 00:38:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2022-02-15 00:38:12,180 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 63 [2022-02-15 00:38:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:12,180 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2022-02-15 00:38:12,180 INFO L471 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) [2022-02-15 00:38:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2022-02-15 00:38:12,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 00:38:12,181 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:12,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:12,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 00:38:12,181 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:12,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash 544985405, now seen corresponding path program 1 times [2022-02-15 00:38:12,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:12,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064224191] [2022-02-15 00:38:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:12,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 00:38:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:12,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:12,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064224191] [2022-02-15 00:38:12,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064224191] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:12,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:12,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 00:38:12,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534255478] [2022-02-15 00:38:12,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:12,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 00:38:12,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:12,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 00:38:12,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:38:12,314 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) [2022-02-15 00:38:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:12,411 INFO L93 Difference]: Finished difference Result 104 states and 103 transitions. [2022-02-15 00:38:12,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:38:12,411 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 [2022-02-15 00:38:12,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:12,412 INFO L225 Difference]: With dead ends: 104 [2022-02-15 00:38:12,412 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 00:38:12,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:12,413 INFO L933 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 [2022-02-15 00:38:12,413 INFO L934 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] [2022-02-15 00:38:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 00:38:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 00:38:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 00:38:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 00:38:12,414 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2022-02-15 00:38:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:12,414 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 00:38:12,414 INFO L471 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) [2022-02-15 00:38:12,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 00:38:12,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 00:38:12,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 00:38:12,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 00:38:12,422 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:12,423 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 00:38:12,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:38:12 BasicIcfg [2022-02-15 00:38:12,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 00:38:12,425 INFO L158 Benchmark]: Toolchain (without parser) took 8399.24ms. Allocated memory was 233.8MB in the beginning and 355.5MB in the end (delta: 121.6MB). Free memory was 182.6MB in the beginning and 126.2MB in the end (delta: 56.4MB). Peak memory consumption was 179.2MB. Max. memory is 8.0GB. [2022-02-15 00:38:12,426 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 233.8MB. Free memory is still 199.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 00:38:12,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.69ms. Allocated memory is still 233.8MB. Free memory was 182.4MB in the beginning and 205.3MB in the end (delta: -22.9MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. [2022-02-15 00:38:12,426 INFO L158 Benchmark]: Boogie Preprocessor took 55.62ms. Allocated memory is still 233.8MB. Free memory was 205.3MB in the beginning and 203.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 00:38:12,426 INFO L158 Benchmark]: RCFGBuilder took 482.34ms. Allocated memory is still 233.8MB. Free memory was 203.0MB in the beginning and 179.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-02-15 00:38:12,426 INFO L158 Benchmark]: IcfgTransformer took 37.46ms. Allocated memory is still 233.8MB. Free memory was 179.9MB in the beginning and 177.4MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-15 00:38:12,426 INFO L158 Benchmark]: TraceAbstraction took 7529.26ms. Allocated memory was 233.8MB in the beginning and 355.5MB in the end (delta: 121.6MB). Free memory was 176.8MB in the beginning and 126.2MB in the end (delta: 50.6MB). Peak memory consumption was 173.7MB. Max. memory is 8.0GB. [2022-02-15 00:38:12,429 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 233.8MB. Free memory is still 199.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 290.69ms. Allocated memory is still 233.8MB. Free memory was 182.4MB in the beginning and 205.3MB in the end (delta: -22.9MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.62ms. Allocated memory is still 233.8MB. Free memory was 205.3MB in the beginning and 203.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 482.34ms. Allocated memory is still 233.8MB. Free memory was 203.0MB in the beginning and 179.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * IcfgTransformer took 37.46ms. Allocated memory is still 233.8MB. Free memory was 179.9MB in the beginning and 177.4MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 7529.26ms. Allocated memory was 233.8MB in the beginning and 355.5MB in the end (delta: 121.6MB). Free memory was 176.8MB in the beginning and 126.2MB in the end (delta: 50.6MB). Peak memory consumption was 173.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 581]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3776 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3768 mSDsluCounter, 4877 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2712 mSDsCounter, 1055 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4849 IncrementalHoareTripleChecker+Invalid, 5904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1055 mSolverCounterUnsat, 2165 mSDtfsCounter, 4849 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 352 GetRequests, 165 SyntacticMatches, 4 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=3, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 147 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 929 NumberOfCodeBlocks, 929 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 911 ConstructedInterpolants, 0 QuantifiedInterpolants, 4122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-15 00:38:12,467 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...