/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 19:53:21,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 19:53:21,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 19:53:21,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 19:53:21,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 19:53:21,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 19:53:21,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 19:53:21,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 19:53:21,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 19:53:21,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 19:53:21,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 19:53:21,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 19:53:21,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 19:53:21,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 19:53:21,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 19:53:21,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 19:53:21,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 19:53:21,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 19:53:21,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 19:53:21,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 19:53:21,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 19:53:21,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 19:53:21,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 19:53:21,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 19:53:21,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 19:53:21,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 19:53:21,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 19:53:21,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 19:53:21,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 19:53:21,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-23 19:53:21,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-23 19:53:21,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-23 19:53:21,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-23 19:53:21,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-23 19:53:21,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-23 19:53:21,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-23 19:53:21,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-23 19:53:21,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-23 19:53:21,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 19:53:21,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 19:53:21,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 19:53:21,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 19:53:21,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 19:53:21,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 19:53:21,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 19:53:21,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 19:53:21,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 19:53:21,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 19:53:21,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 19:53:21,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 19:53:21,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 19:53:21,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 19:53:21,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 19:53:21,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 19:53:21,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 19:53:21,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 19:53:21,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 19:53:21,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 19:53:21,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 19:53:21,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 19:53:21,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 19:53:21,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 19:53:21,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 19:53:21,725 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 19:53:21,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 19:53:21,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 19:53:21,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 19:53:21,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 19:53:21,932 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 19:53:21,933 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 19:53:21,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-02-23 19:53:22,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6036ae79/63686fb1adc84fae851f00f62e5a289e/FLAG5e4d65a83 [2022-02-23 19:53:22,313 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 19:53:22,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-02-23 19:53:22,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6036ae79/63686fb1adc84fae851f00f62e5a289e/FLAG5e4d65a83 [2022-02-23 19:53:22,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6036ae79/63686fb1adc84fae851f00f62e5a289e [2022-02-23 19:53:22,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 19:53:22,736 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 19:53:22,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 19:53:22,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 19:53:22,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 19:53:22,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:53:22" (1/1) ... [2022-02-23 19:53:22,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23935a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:22, skipping insertion in model container [2022-02-23 19:53:22,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:53:22" (1/1) ... [2022-02-23 19:53:22,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 19:53:22,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 19:53:22,991 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2022-02-23 19:53:22,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 19:53:22,998 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 19:53:23,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2022-02-23 19:53:23,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 19:53:23,078 INFO L208 MainTranslator]: Completed translation [2022-02-23 19:53:23,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23 WrapperNode [2022-02-23 19:53:23,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 19:53:23,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 19:53:23,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 19:53:23,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 19:53:23,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23" (1/1) ... [2022-02-23 19:53:23,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23" (1/1) ... [2022-02-23 19:53:23,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23" (1/1) ... [2022-02-23 19:53:23,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23" (1/1) ... [2022-02-23 19:53:23,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23" (1/1) ... [2022-02-23 19:53:23,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23" (1/1) ... [2022-02-23 19:53:23,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23" (1/1) ... [2022-02-23 19:53:23,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 19:53:23,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 19:53:23,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 19:53:23,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 19:53:23,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23" (1/1) ... [2022-02-23 19:53:23,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 19:53:23,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:53:23,177 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) [2022-02-23 19:53:23,199 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 [2022-02-23 19:53:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 19:53:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 19:53:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 19:53:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-23 19:53:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-23 19:53:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-02-23 19:53:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 19:53:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-23 19:53:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-23 19:53:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-23 19:53:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-23 19:53:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-23 19:53:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-02-23 19:53:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-02-23 19:53:23,210 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-02-23 19:53:23,210 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-02-23 19:53:23,211 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-23 19:53:23,211 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-02-23 19:53:23,211 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-02-23 19:53:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 19:53:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 19:53:23,338 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 19:53:23,341 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 19:53:23,418 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:53:23,513 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-23 19:53:23,513 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-23 19:53:23,516 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:53:23,556 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-23 19:53:23,557 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-23 19:53:23,632 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:53:23,650 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-23 19:53:23,651 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-23 19:53:23,659 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:53:23,760 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-23 19:53:23,760 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-23 19:53:23,764 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:53:23,788 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-23 19:53:23,788 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-23 19:53:23,792 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:53:23,820 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-23 19:53:23,820 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-23 19:53:23,837 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 19:53:23,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 19:53:23,844 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-23 19:53:23,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:53:23 BoogieIcfgContainer [2022-02-23 19:53:23,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 19:53:23,846 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 19:53:23,846 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 19:53:23,847 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 19:53:23,849 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:53:23" (1/1) ... [2022-02-23 19:53:23,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:53:23 BasicIcfg [2022-02-23 19:53:23,882 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 19:53:23,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 19:53:23,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 19:53:23,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 19:53:23,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:53:22" (1/4) ... [2022-02-23 19:53:23,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c00727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:53:23, skipping insertion in model container [2022-02-23 19:53:23,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:53:23" (2/4) ... [2022-02-23 19:53:23,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c00727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:53:23, skipping insertion in model container [2022-02-23 19:53:23,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:53:23" (3/4) ... [2022-02-23 19:53:23,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c00727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:53:23, skipping insertion in model container [2022-02-23 19:53:23,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:53:23" (4/4) ... [2022-02-23 19:53:23,889 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.cJordan [2022-02-23 19:53:23,893 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 19:53:23,893 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 19:53:23,924 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 19:53:23,929 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 [2022-02-23 19:53:23,929 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 19:53:23,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 199 states have internal predecessors, (284), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-02-23 19:53:23,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-23 19:53:23,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:23,958 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] [2022-02-23 19:53:23,958 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:23,962 INFO L85 PathProgramCache]: Analyzing trace with hash 685042341, now seen corresponding path program 1 times [2022-02-23 19:53:23,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:23,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763180047] [2022-02-23 19:53:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:23,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:24,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:24,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763180047] [2022-02-23 19:53:24,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763180047] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:24,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:24,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 19:53:24,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185732498] [2022-02-23 19:53:24,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:24,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 19:53:24,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 19:53:24,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-23 19:53:24,299 INFO L87 Difference]: Start difference. First operand has 239 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 199 states have internal predecessors, (284), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 19:53:25,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:25,034 INFO L93 Difference]: Finished difference Result 267 states and 384 transitions. [2022-02-23 19:53:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 19:53:25,037 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 [2022-02-23 19:53:25,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:25,045 INFO L225 Difference]: With dead ends: 267 [2022-02-23 19:53:25,045 INFO L226 Difference]: Without dead ends: 256 [2022-02-23 19:53:25,046 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 [2022-02-23 19:53:25,049 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 173 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:25,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 446 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-23 19:53:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-02-23 19:53:25,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 228. [2022-02-23 19:53:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 174 states have (on average 1.4942528735632183) internal successors, (260), 189 states have internal predecessors, (260), 38 states have call successors, (38), 17 states have call predecessors, (38), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-23 19:53:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 322 transitions. [2022-02-23 19:53:25,093 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 322 transitions. Word has length 20 [2022-02-23 19:53:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:25,093 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 322 transitions. [2022-02-23 19:53:25,093 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) [2022-02-23 19:53:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 322 transitions. [2022-02-23 19:53:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-23 19:53:25,094 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:25,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:25,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 19:53:25,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1276904425, now seen corresponding path program 1 times [2022-02-23 19:53:25,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:25,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347873590] [2022-02-23 19:53:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:25,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:25,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:25,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347873590] [2022-02-23 19:53:25,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347873590] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:25,260 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:25,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 19:53:25,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541302323] [2022-02-23 19:53:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:25,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 19:53:25,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:25,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 19:53:25,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:53:25,262 INFO L87 Difference]: Start difference. First operand 228 states and 322 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:53:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:25,741 INFO L93 Difference]: Finished difference Result 344 states and 470 transitions. [2022-02-23 19:53:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 19:53:25,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-02-23 19:53:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:25,743 INFO L225 Difference]: With dead ends: 344 [2022-02-23 19:53:25,744 INFO L226 Difference]: Without dead ends: 343 [2022-02-23 19:53:25,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:53:25,745 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 533 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:25,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 463 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-23 19:53:25,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-23 19:53:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 301. [2022-02-23 19:53:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 237 states have (on average 1.3924050632911393) internal successors, (330), 240 states have internal predecessors, (330), 37 states have call successors, (37), 23 states have call predecessors, (37), 26 states have return successors, (44), 40 states have call predecessors, (44), 29 states have call successors, (44) [2022-02-23 19:53:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 411 transitions. [2022-02-23 19:53:25,769 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 411 transitions. Word has length 28 [2022-02-23 19:53:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:25,769 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 411 transitions. [2022-02-23 19:53:25,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:53:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 411 transitions. [2022-02-23 19:53:25,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-23 19:53:25,770 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:25,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:25,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 19:53:25,770 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:25,771 INFO L85 PathProgramCache]: Analyzing trace with hash 42368072, now seen corresponding path program 1 times [2022-02-23 19:53:25,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:25,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499123982] [2022-02-23 19:53:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:25,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:25,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:25,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499123982] [2022-02-23 19:53:25,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499123982] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:25,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:25,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 19:53:25,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674542502] [2022-02-23 19:53:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:25,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 19:53:25,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:25,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 19:53:25,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:53:25,906 INFO L87 Difference]: Start difference. First operand 301 states and 411 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:53:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:26,271 INFO L93 Difference]: Finished difference Result 362 states and 486 transitions. [2022-02-23 19:53:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 19:53:26,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-02-23 19:53:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:26,274 INFO L225 Difference]: With dead ends: 362 [2022-02-23 19:53:26,274 INFO L226 Difference]: Without dead ends: 362 [2022-02-23 19:53:26,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:53:26,275 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 568 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:26,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 378 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-23 19:53:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-02-23 19:53:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 341. [2022-02-23 19:53:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 278 states have (on average 1.3848920863309353) internal successors, (385), 279 states have internal predecessors, (385), 33 states have call successors, (33), 23 states have call predecessors, (33), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-02-23 19:53:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2022-02-23 19:53:26,302 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 462 transitions. Word has length 28 [2022-02-23 19:53:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:26,302 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 462 transitions. [2022-02-23 19:53:26,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:53:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 462 transitions. [2022-02-23 19:53:26,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-23 19:53:26,309 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:26,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:26,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-23 19:53:26,310 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:26,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1039161410, now seen corresponding path program 1 times [2022-02-23 19:53:26,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:26,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99852606] [2022-02-23 19:53:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:26,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:26,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:26,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99852606] [2022-02-23 19:53:26,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99852606] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:26,441 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:26,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 19:53:26,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932093427] [2022-02-23 19:53:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:26,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 19:53:26,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:26,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 19:53:26,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:53:26,454 INFO L87 Difference]: Start difference. First operand 341 states and 462 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:53:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:26,817 INFO L93 Difference]: Finished difference Result 340 states and 459 transitions. [2022-02-23 19:53:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 19:53:26,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-02-23 19:53:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:26,819 INFO L225 Difference]: With dead ends: 340 [2022-02-23 19:53:26,819 INFO L226 Difference]: Without dead ends: 340 [2022-02-23 19:53:26,819 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 [2022-02-23 19:53:26,820 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 343 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:26,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 385 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-23 19:53:26,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-02-23 19:53:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-02-23 19:53:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 278 states have (on average 1.3776978417266188) internal successors, (383), 278 states have internal predecessors, (383), 32 states have call successors, (32), 23 states have call predecessors, (32), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-02-23 19:53:26,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 459 transitions. [2022-02-23 19:53:26,834 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 459 transitions. Word has length 38 [2022-02-23 19:53:26,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:26,835 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 459 transitions. [2022-02-23 19:53:26,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:53:26,835 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 459 transitions. [2022-02-23 19:53:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-23 19:53:26,837 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:26,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:26,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-23 19:53:26,837 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:26,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash 827623692, now seen corresponding path program 1 times [2022-02-23 19:53:26,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:26,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461030868] [2022-02-23 19:53:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:26,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:26,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:26,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461030868] [2022-02-23 19:53:26,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461030868] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:26,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:26,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-23 19:53:26,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898872008] [2022-02-23 19:53:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:26,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 19:53:26,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 19:53:26,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:53:26,955 INFO L87 Difference]: Start difference. First operand 340 states and 459 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 19:53:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:27,474 INFO L93 Difference]: Finished difference Result 319 states and 423 transitions. [2022-02-23 19:53:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:53:27,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-02-23 19:53:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:27,476 INFO L225 Difference]: With dead ends: 319 [2022-02-23 19:53:27,476 INFO L226 Difference]: Without dead ends: 319 [2022-02-23 19:53:27,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:27,477 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 744 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:27,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 543 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-23 19:53:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-02-23 19:53:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 301. [2022-02-23 19:53:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 244 states have (on average 1.3688524590163935) internal successors, (334), 244 states have internal predecessors, (334), 29 states have call successors, (29), 21 states have call predecessors, (29), 27 states have return successors, (39), 36 states have call predecessors, (39), 24 states have call successors, (39) [2022-02-23 19:53:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 402 transitions. [2022-02-23 19:53:27,506 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 402 transitions. Word has length 46 [2022-02-23 19:53:27,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:27,507 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 402 transitions. [2022-02-23 19:53:27,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 19:53:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 402 transitions. [2022-02-23 19:53:27,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-23 19:53:27,512 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:27,512 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] [2022-02-23 19:53:27,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-23 19:53:27,513 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:27,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:27,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1073883700, now seen corresponding path program 1 times [2022-02-23 19:53:27,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:27,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917013668] [2022-02-23 19:53:27,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:27,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:27,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 19:53:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:27,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:27,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917013668] [2022-02-23 19:53:27,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917013668] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:27,757 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:27,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:27,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197316723] [2022-02-23 19:53:27,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:27,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:27,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:27,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:27,758 INFO L87 Difference]: Start difference. First operand 301 states and 402 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:53:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:28,438 INFO L93 Difference]: Finished difference Result 322 states and 425 transitions. [2022-02-23 19:53:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 19:53:28,438 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-02-23 19:53:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:28,440 INFO L225 Difference]: With dead ends: 322 [2022-02-23 19:53:28,440 INFO L226 Difference]: Without dead ends: 322 [2022-02-23 19:53:28,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:53:28,441 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 527 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:28,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 417 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-23 19:53:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-02-23 19:53:28,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2022-02-23 19:53:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 256 states have (on average 1.359375) internal successors, (348), 255 states have internal predecessors, (348), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-02-23 19:53:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 418 transitions. [2022-02-23 19:53:28,448 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 418 transitions. Word has length 45 [2022-02-23 19:53:28,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:28,448 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 418 transitions. [2022-02-23 19:53:28,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:53:28,448 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 418 transitions. [2022-02-23 19:53:28,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-23 19:53:28,449 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:28,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:28,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-23 19:53:28,450 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1039481029, now seen corresponding path program 1 times [2022-02-23 19:53:28,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:28,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091474859] [2022-02-23 19:53:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:28,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 19:53:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:28,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:28,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091474859] [2022-02-23 19:53:28,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091474859] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:28,707 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:28,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:28,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001990481] [2022-02-23 19:53:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:28,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:28,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:28,708 INFO L87 Difference]: Start difference. First operand 315 states and 418 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:53:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:29,474 INFO L93 Difference]: Finished difference Result 322 states and 424 transitions. [2022-02-23 19:53:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 19:53:29,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-02-23 19:53:29,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:29,476 INFO L225 Difference]: With dead ends: 322 [2022-02-23 19:53:29,476 INFO L226 Difference]: Without dead ends: 322 [2022-02-23 19:53:29,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:53:29,477 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 645 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:29,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 584 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-23 19:53:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-02-23 19:53:29,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2022-02-23 19:53:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 257 states have (on average 1.3579766536964981) internal successors, (349), 256 states have internal predecessors, (349), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-02-23 19:53:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 419 transitions. [2022-02-23 19:53:29,484 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 419 transitions. Word has length 46 [2022-02-23 19:53:29,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:29,485 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 419 transitions. [2022-02-23 19:53:29,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:53:29,485 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 419 transitions. [2022-02-23 19:53:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-23 19:53:29,486 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:29,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:29,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-23 19:53:29,486 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:29,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:29,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2137589877, now seen corresponding path program 1 times [2022-02-23 19:53:29,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:29,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817280919] [2022-02-23 19:53:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 19:53:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:29,582 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:29,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817280919] [2022-02-23 19:53:29,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817280919] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:29,582 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:29,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-23 19:53:29,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740818287] [2022-02-23 19:53:29,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:29,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 19:53:29,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 19:53:29,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:53:29,583 INFO L87 Difference]: Start difference. First operand 316 states and 419 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:53:30,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:30,019 INFO L93 Difference]: Finished difference Result 310 states and 408 transitions. [2022-02-23 19:53:30,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:53:30,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-02-23 19:53:30,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:30,021 INFO L225 Difference]: With dead ends: 310 [2022-02-23 19:53:30,021 INFO L226 Difference]: Without dead ends: 102 [2022-02-23 19:53:30,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:30,022 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 432 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:30,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 403 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-23 19:53:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-02-23 19:53:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-02-23 19:53:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 15 states have call successors, (15), 13 states have call predecessors, (15), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-02-23 19:53:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2022-02-23 19:53:30,026 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 47 [2022-02-23 19:53:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:30,027 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2022-02-23 19:53:30,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:53:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2022-02-23 19:53:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-23 19:53:30,027 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:30,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:30,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-23 19:53:30,028 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:30,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1910683918, now seen corresponding path program 1 times [2022-02-23 19:53:30,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:30,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701904703] [2022-02-23 19:53:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:30,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-23 19:53:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-23 19:53:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:30,155 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:30,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701904703] [2022-02-23 19:53:30,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701904703] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:30,155 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:30,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-23 19:53:30,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013206119] [2022-02-23 19:53:30,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:30,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 19:53:30,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:30,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 19:53:30,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:53:30,156 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:30,309 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2022-02-23 19:53:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:53:30,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2022-02-23 19:53:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:30,310 INFO L225 Difference]: With dead ends: 100 [2022-02-23 19:53:30,310 INFO L226 Difference]: Without dead ends: 100 [2022-02-23 19:53:30,311 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 [2022-02-23 19:53:30,311 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 74 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:30,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 208 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-23 19:53:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-02-23 19:53:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-02-23 19:53:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2022-02-23 19:53:30,314 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 53 [2022-02-23 19:53:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:30,314 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2022-02-23 19:53:30,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2022-02-23 19:53:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-23 19:53:30,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:30,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:30,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-23 19:53:30,315 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:30,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:30,315 INFO L85 PathProgramCache]: Analyzing trace with hash -948674633, now seen corresponding path program 1 times [2022-02-23 19:53:30,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:30,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384207229] [2022-02-23 19:53:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:30,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:30,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:30,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384207229] [2022-02-23 19:53:30,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384207229] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:30,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:30,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-23 19:53:30,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689376582] [2022-02-23 19:53:30,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:30,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 19:53:30,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:30,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 19:53:30,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:53:30,451 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:30,576 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2022-02-23 19:53:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:53:30,576 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-02-23 19:53:30,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:30,577 INFO L225 Difference]: With dead ends: 118 [2022-02-23 19:53:30,577 INFO L226 Difference]: Without dead ends: 111 [2022-02-23 19:53:30,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:30,578 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 106 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:30,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 308 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-23 19:53:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-02-23 19:53:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.1875) internal successors, (95), 81 states have internal predecessors, (95), 14 states have call successors, (14), 13 states have call predecessors, (14), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-02-23 19:53:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2022-02-23 19:53:30,580 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 57 [2022-02-23 19:53:30,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:30,580 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2022-02-23 19:53:30,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:30,581 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2022-02-23 19:53:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-23 19:53:30,581 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:30,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:30,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-23 19:53:30,581 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1641862871, now seen corresponding path program 1 times [2022-02-23 19:53:30,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:30,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945282327] [2022-02-23 19:53:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:30,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:30,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:30,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945282327] [2022-02-23 19:53:30,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945282327] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:30,723 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:30,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-23 19:53:30,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584510158] [2022-02-23 19:53:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:30,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 19:53:30,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 19:53:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:53:30,724 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:30,911 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-02-23 19:53:30,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:53:30,911 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-02-23 19:53:30,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:30,913 INFO L225 Difference]: With dead ends: 109 [2022-02-23 19:53:30,913 INFO L226 Difference]: Without dead ends: 109 [2022-02-23 19:53:30,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-02-23 19:53:30,914 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 59 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:30,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 305 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:30,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-23 19:53:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-02-23 19:53:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 82 states have internal predecessors, (96), 14 states have call successors, (14), 13 states have call predecessors, (14), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-02-23 19:53:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2022-02-23 19:53:30,916 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 57 [2022-02-23 19:53:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:30,917 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2022-02-23 19:53:30,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2022-02-23 19:53:30,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-23 19:53:30,918 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:30,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:30,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-23 19:53:30,918 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1083966817, now seen corresponding path program 1 times [2022-02-23 19:53:30,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:30,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555391380] [2022-02-23 19:53:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:30,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:31,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:31,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555391380] [2022-02-23 19:53:31,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555391380] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:31,066 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:31,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-23 19:53:31,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497022577] [2022-02-23 19:53:31,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:31,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 19:53:31,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:31,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 19:53:31,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:53:31,067 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:31,233 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2022-02-23 19:53:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:53:31,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2022-02-23 19:53:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:31,235 INFO L225 Difference]: With dead ends: 196 [2022-02-23 19:53:31,235 INFO L226 Difference]: Without dead ends: 196 [2022-02-23 19:53:31,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:53:31,236 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 183 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:31,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 208 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-02-23 19:53:31,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2022-02-23 19:53:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 144 states have (on average 1.1875) internal successors, (171), 146 states have internal predecessors, (171), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (18), 17 states have call predecessors, (18), 14 states have call successors, (18) [2022-02-23 19:53:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 210 transitions. [2022-02-23 19:53:31,243 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 210 transitions. Word has length 58 [2022-02-23 19:53:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:31,243 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 210 transitions. [2022-02-23 19:53:31,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 210 transitions. [2022-02-23 19:53:31,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-23 19:53:31,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:31,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:31,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-23 19:53:31,245 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:31,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1971470498, now seen corresponding path program 1 times [2022-02-23 19:53:31,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:31,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801646842] [2022-02-23 19:53:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:31,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:31,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801646842] [2022-02-23 19:53:31,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801646842] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:31,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:31,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-23 19:53:31,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425205326] [2022-02-23 19:53:31,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:31,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 19:53:31,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 19:53:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:53:31,409 INFO L87 Difference]: Start difference. First operand 184 states and 210 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:31,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:31,507 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2022-02-23 19:53:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:53:31,508 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-02-23 19:53:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:31,508 INFO L225 Difference]: With dead ends: 172 [2022-02-23 19:53:31,508 INFO L226 Difference]: Without dead ends: 172 [2022-02-23 19:53:31,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:53:31,510 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:31,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 256 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-02-23 19:53:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-02-23 19:53:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 132 states have (on average 1.1590909090909092) internal successors, (153), 134 states have internal predecessors, (153), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (18), 17 states have call predecessors, (18), 14 states have call successors, (18) [2022-02-23 19:53:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2022-02-23 19:53:31,514 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 58 [2022-02-23 19:53:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:31,515 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2022-02-23 19:53:31,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2022-02-23 19:53:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-23 19:53:31,515 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:31,516 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] [2022-02-23 19:53:31,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-23 19:53:31,516 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2034770721, now seen corresponding path program 1 times [2022-02-23 19:53:31,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:31,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69189123] [2022-02-23 19:53:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:53:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:31,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:31,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69189123] [2022-02-23 19:53:31,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69189123] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:31,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:31,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:31,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946392582] [2022-02-23 19:53:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:31,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:31,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:31,672 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:31,963 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2022-02-23 19:53:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 19:53:31,963 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-02-23 19:53:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:31,964 INFO L225 Difference]: With dead ends: 160 [2022-02-23 19:53:31,964 INFO L226 Difference]: Without dead ends: 156 [2022-02-23 19:53:31,964 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 [2022-02-23 19:53:31,965 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 144 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:31,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 257 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 19:53:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-02-23 19:53:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-02-23 19:53:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 120 states have internal predecessors, (135), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-02-23 19:53:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 172 transitions. [2022-02-23 19:53:31,975 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 172 transitions. Word has length 62 [2022-02-23 19:53:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:31,976 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 172 transitions. [2022-02-23 19:53:31,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:31,976 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 172 transitions. [2022-02-23 19:53:31,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-23 19:53:31,976 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:31,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:31,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-23 19:53:31,976 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:31,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1057027574, now seen corresponding path program 1 times [2022-02-23 19:53:31,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:31,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748593259] [2022-02-23 19:53:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:31,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:53:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:32,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:32,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748593259] [2022-02-23 19:53:32,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748593259] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:32,096 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:32,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 19:53:32,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044751131] [2022-02-23 19:53:32,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:32,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 19:53:32,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:32,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 19:53:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-23 19:53:32,097 INFO L87 Difference]: Start difference. First operand 156 states and 172 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:32,180 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2022-02-23 19:53:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 19:53:32,180 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-02-23 19:53:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:32,181 INFO L225 Difference]: With dead ends: 168 [2022-02-23 19:53:32,181 INFO L226 Difference]: Without dead ends: 168 [2022-02-23 19:53:32,181 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 [2022-02-23 19:53:32,182 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 103 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:32,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 207 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:32,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-02-23 19:53:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2022-02-23 19:53:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 126 states have internal predecessors, (141), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-02-23 19:53:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2022-02-23 19:53:32,185 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 64 [2022-02-23 19:53:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:32,185 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2022-02-23 19:53:32,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2022-02-23 19:53:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-23 19:53:32,186 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:32,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:32,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-23 19:53:32,186 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:32,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:32,186 INFO L85 PathProgramCache]: Analyzing trace with hash 763624567, now seen corresponding path program 1 times [2022-02-23 19:53:32,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:32,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508408862] [2022-02-23 19:53:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:32,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:53:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:32,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:32,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508408862] [2022-02-23 19:53:32,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508408862] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:32,303 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:32,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 19:53:32,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554415499] [2022-02-23 19:53:32,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:32,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 19:53:32,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:32,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 19:53:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-23 19:53:32,304 INFO L87 Difference]: Start difference. First operand 162 states and 178 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:32,466 INFO L93 Difference]: Finished difference Result 179 states and 196 transitions. [2022-02-23 19:53:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:53:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-02-23 19:53:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:32,468 INFO L225 Difference]: With dead ends: 179 [2022-02-23 19:53:32,468 INFO L226 Difference]: Without dead ends: 177 [2022-02-23 19:53:32,468 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 [2022-02-23 19:53:32,468 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 78 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:32,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 215 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-23 19:53:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 166. [2022-02-23 19:53:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.125) internal successors, (144), 130 states have internal predecessors, (144), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-02-23 19:53:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2022-02-23 19:53:32,471 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 64 [2022-02-23 19:53:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:32,472 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2022-02-23 19:53:32,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2022-02-23 19:53:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-23 19:53:32,472 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:32,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:32,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-23 19:53:32,472 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1206614856, now seen corresponding path program 1 times [2022-02-23 19:53:32,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:32,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42403926] [2022-02-23 19:53:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:32,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:53:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:32,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:32,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42403926] [2022-02-23 19:53:32,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42403926] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:32,619 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:32,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:32,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530405835] [2022-02-23 19:53:32,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:32,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:32,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:32,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:32,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:32,620 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:32,793 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions. [2022-02-23 19:53:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:53:32,794 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-02-23 19:53:32,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:32,795 INFO L225 Difference]: With dead ends: 175 [2022-02-23 19:53:32,795 INFO L226 Difference]: Without dead ends: 175 [2022-02-23 19:53:32,795 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 [2022-02-23 19:53:32,795 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 87 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:32,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 337 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 19:53:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-02-23 19:53:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2022-02-23 19:53:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.109375) internal successors, (142), 130 states have internal predecessors, (142), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-02-23 19:53:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2022-02-23 19:53:32,798 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 64 [2022-02-23 19:53:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:32,799 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2022-02-23 19:53:32,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2022-02-23 19:53:32,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-23 19:53:32,799 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:32,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:32,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-23 19:53:32,799 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:32,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:32,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2128246060, now seen corresponding path program 1 times [2022-02-23 19:53:32,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:32,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386022864] [2022-02-23 19:53:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:32,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:53:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:32,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:32,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386022864] [2022-02-23 19:53:32,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386022864] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:32,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:32,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:32,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123521721] [2022-02-23 19:53:32,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:32,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:32,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:32,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:32,964 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:33,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:33,285 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2022-02-23 19:53:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 19:53:33,285 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-02-23 19:53:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:33,286 INFO L225 Difference]: With dead ends: 163 [2022-02-23 19:53:33,286 INFO L226 Difference]: Without dead ends: 144 [2022-02-23 19:53:33,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:53:33,287 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 205 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:33,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 154 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-02-23 19:53:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-02-23 19:53:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 109 states have (on average 1.091743119266055) internal successors, (119), 110 states have internal predecessors, (119), 20 states have call successors, (20), 19 states have call predecessors, (20), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-23 19:53:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2022-02-23 19:53:33,290 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 65 [2022-02-23 19:53:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:33,290 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2022-02-23 19:53:33,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2022-02-23 19:53:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-23 19:53:33,290 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:33,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:33,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-23 19:53:33,291 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:33,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1266450091, now seen corresponding path program 1 times [2022-02-23 19:53:33,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:33,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505203627] [2022-02-23 19:53:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:33,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:53:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:33,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:33,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505203627] [2022-02-23 19:53:33,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505203627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:33,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:33,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 19:53:33,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426949003] [2022-02-23 19:53:33,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:33,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 19:53:33,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 19:53:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-23 19:53:33,449 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:33,577 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2022-02-23 19:53:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:53:33,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-02-23 19:53:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:33,578 INFO L225 Difference]: With dead ends: 139 [2022-02-23 19:53:33,578 INFO L226 Difference]: Without dead ends: 137 [2022-02-23 19:53:33,578 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 [2022-02-23 19:53:33,578 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 72 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:33,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 155 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-23 19:53:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-02-23 19:53:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.058252427184466) internal successors, (109), 103 states have internal predecessors, (109), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-23 19:53:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 142 transitions. [2022-02-23 19:53:33,581 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 142 transitions. Word has length 65 [2022-02-23 19:53:33,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:33,581 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 142 transitions. [2022-02-23 19:53:33,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 142 transitions. [2022-02-23 19:53:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-23 19:53:33,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:33,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:33,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-23 19:53:33,582 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:33,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:33,582 INFO L85 PathProgramCache]: Analyzing trace with hash 79966819, now seen corresponding path program 1 times [2022-02-23 19:53:33,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:33,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376269759] [2022-02-23 19:53:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:33,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:53:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:33,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:33,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376269759] [2022-02-23 19:53:33,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376269759] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:33,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:33,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:33,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530805089] [2022-02-23 19:53:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:33,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:33,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:33,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:33,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:33,749 INFO L87 Difference]: Start difference. First operand 137 states and 142 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:33,901 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2022-02-23 19:53:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:53:33,902 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2022-02-23 19:53:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:33,902 INFO L225 Difference]: With dead ends: 137 [2022-02-23 19:53:33,902 INFO L226 Difference]: Without dead ends: 137 [2022-02-23 19:53:33,903 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 [2022-02-23 19:53:33,903 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 37 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:33,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 260 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-23 19:53:33,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-02-23 19:53:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-23 19:53:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2022-02-23 19:53:33,906 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 65 [2022-02-23 19:53:33,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:33,906 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2022-02-23 19:53:33,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:33,906 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2022-02-23 19:53:33,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-23 19:53:33,906 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:33,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:33,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-23 19:53:33,907 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:33,907 INFO L85 PathProgramCache]: Analyzing trace with hash -117181948, now seen corresponding path program 1 times [2022-02-23 19:53:33,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:33,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613283289] [2022-02-23 19:53:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:33,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 19:53:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:53:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-23 19:53:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:34,029 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:34,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613283289] [2022-02-23 19:53:34,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613283289] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:34,029 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:34,029 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-23 19:53:34,029 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133073155] [2022-02-23 19:53:34,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:34,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 19:53:34,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 19:53:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:53:34,030 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-23 19:53:34,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:34,168 INFO L93 Difference]: Finished difference Result 108 states and 107 transitions. [2022-02-23 19:53:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:53:34,169 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-02-23 19:53:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:34,170 INFO L225 Difference]: With dead ends: 108 [2022-02-23 19:53:34,170 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 19:53:34,170 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 [2022-02-23 19:53:34,171 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 31 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:34,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 186 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:53:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 19:53:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 19:53:34,173 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) [2022-02-23 19:53:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 19:53:34,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-02-23 19:53:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:34,174 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 19:53:34,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-23 19:53:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 19:53:34,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 19:53:34,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 19:53:34,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-23 19:53:34,181 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:34,183 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 19:53:34,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:53:34 BasicIcfg [2022-02-23 19:53:34,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 19:53:34,186 INFO L158 Benchmark]: Toolchain (without parser) took 11450.22ms. Allocated memory was 186.6MB in the beginning and 272.6MB in the end (delta: 86.0MB). Free memory was 136.5MB in the beginning and 241.7MB in the end (delta: -105.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 19:53:34,186 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory was 153.6MB in the beginning and 153.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 19:53:34,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.66ms. Allocated memory is still 186.6MB. Free memory was 136.4MB in the beginning and 154.8MB in the end (delta: -18.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-23 19:53:34,189 INFO L158 Benchmark]: Boogie Preprocessor took 51.00ms. Allocated memory is still 186.6MB. Free memory was 154.8MB in the beginning and 152.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 19:53:34,189 INFO L158 Benchmark]: RCFGBuilder took 714.60ms. Allocated memory is still 186.6MB. Free memory was 152.1MB in the beginning and 118.6MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-02-23 19:53:34,189 INFO L158 Benchmark]: IcfgTransformer took 35.75ms. Allocated memory is still 186.6MB. Free memory was 118.6MB in the beginning and 114.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-02-23 19:53:34,189 INFO L158 Benchmark]: TraceAbstraction took 10302.10ms. Allocated memory was 186.6MB in the beginning and 272.6MB in the end (delta: 86.0MB). Free memory was 114.0MB in the beginning and 241.7MB in the end (delta: -127.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 19:53:34,193 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 186.6MB. Free memory was 153.6MB in the beginning and 153.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 339.66ms. Allocated memory is still 186.6MB. Free memory was 136.4MB in the beginning and 154.8MB in the end (delta: -18.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.00ms. Allocated memory is still 186.6MB. Free memory was 154.8MB in the beginning and 152.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 714.60ms. Allocated memory is still 186.6MB. Free memory was 152.1MB in the beginning and 118.6MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * IcfgTransformer took 35.75ms. Allocated memory is still 186.6MB. Free memory was 118.6MB in the beginning and 114.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 10302.10ms. Allocated memory was 186.6MB in the beginning and 272.6MB in the end (delta: 86.0MB). Free memory was 114.0MB in the beginning and 241.7MB in the end (delta: -127.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1013]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5226 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5209 mSDsluCounter, 6675 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3497 mSDsCounter, 1267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6357 IncrementalHoareTripleChecker+Invalid, 7624 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1267 mSolverCounterUnsat, 3178 mSDtfsCounter, 6357 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 419 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=3, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 169 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1106 NumberOfCodeBlocks, 1106 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1085 ConstructedInterpolants, 0 QuantifiedInterpolants, 5192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-23 19:53:34,222 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...