/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 21:02:28,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 21:02:28,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 21:02:29,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 21:02:29,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 21:02:29,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 21:02:29,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 21:02:29,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 21:02:29,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 21:02:29,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 21:02:29,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 21:02:29,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 21:02:29,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 21:02:29,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 21:02:29,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 21:02:29,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 21:02:29,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 21:02:29,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 21:02:29,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 21:02:29,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 21:02:29,022 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 21:02:29,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 21:02:29,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 21:02:29,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 21:02:29,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 21:02:29,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 21:02:29,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 21:02:29,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 21:02:29,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 21:02:29,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 21:02:29,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 21:02:29,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 21:02:29,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 21:02:29,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 21:02:29,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 21:02:29,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 21:02:29,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 21:02:29,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 21:02:29,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 21:02:29,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 21:02:29,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 21:02:29,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 21:02:29,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 21:02:29,038 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 21:02:29,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 21:02:29,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 21:02:29,039 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 21:02:29,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 21:02:29,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 21:02:29,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 21:02:29,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 21:02:29,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 21:02:29,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 21:02:29,039 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 21:02:29,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 21:02:29,040 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 21:02:29,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 21:02:29,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 21:02:29,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 21:02:29,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 21:02:29,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 21:02:29,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:02:29,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 21:02:29,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 21:02:29,041 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 21:02:29,041 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 21:02:29,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 21:02:29,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 21:02:29,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 21:02:29,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 21:02:29,198 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 21:02:29,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-03-18 21:02:29,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4943a697/218515589fa94341a4e35c94e8063941/FLAG4fa38162d [2022-03-18 21:02:29,583 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 21:02:29,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-03-18 21:02:29,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4943a697/218515589fa94341a4e35c94e8063941/FLAG4fa38162d [2022-03-18 21:02:29,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4943a697/218515589fa94341a4e35c94e8063941 [2022-03-18 21:02:29,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 21:02:29,602 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 21:02:29,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 21:02:29,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 21:02:29,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 21:02:29,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6990e361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29, skipping insertion in model container [2022-03-18 21:02:29,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 21:02:29,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 21:02:29,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2022-03-18 21:02:29,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:02:29,795 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 21:02:29,820 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2022-03-18 21:02:29,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:02:29,847 INFO L208 MainTranslator]: Completed translation [2022-03-18 21:02:29,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29 WrapperNode [2022-03-18 21:02:29,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 21:02:29,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 21:02:29,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 21:02:29,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 21:02:29,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 21:02:29,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 21:02:29,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 21:02:29,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 21:02:29,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29" (1/1) ... [2022-03-18 21:02:29,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:02:29,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:02:29,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 21:02:29,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 21:02:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 21:02:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 21:02:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 21:02:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 21:02:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 21:02:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-18 21:02:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 21:02:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 21:02:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 21:02:30,027 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 21:02:30,027 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 21:02:30,028 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 21:02:30,028 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-18 21:02:30,028 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 21:02:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 21:02:30,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 21:02:30,031 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 21:02:30,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 21:02:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 21:02:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 21:02:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 21:02:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-18 21:02:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 21:02:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 21:02:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 21:02:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 21:02:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 21:02:30,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 21:02:30,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 21:02:30,134 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 21:02:30,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 21:02:30,195 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:30,253 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-03-18 21:02:30,254 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-03-18 21:02:30,255 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:30,283 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2022-03-18 21:02:30,283 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2022-03-18 21:02:30,307 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:30,338 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 21:02:30,338 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 21:02:30,347 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:30,413 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-18 21:02:30,413 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-18 21:02:30,417 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 21:02:30,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 21:02:30,433 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-18 21:02:30,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:02:30 BoogieIcfgContainer [2022-03-18 21:02:30,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 21:02:30,436 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 21:02:30,436 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 21:02:30,437 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 21:02:30,439 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:02:30" (1/1) ... [2022-03-18 21:02:30,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:02:30 BasicIcfg [2022-03-18 21:02:30,460 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 21:02:30,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 21:02:30,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 21:02:30,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 21:02:30,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 09:02:29" (1/4) ... [2022-03-18 21:02:30,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125e474b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:02:30, skipping insertion in model container [2022-03-18 21:02:30,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:29" (2/4) ... [2022-03-18 21:02:30,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125e474b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:02:30, skipping insertion in model container [2022-03-18 21:02:30,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:02:30" (3/4) ... [2022-03-18 21:02:30,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125e474b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:02:30, skipping insertion in model container [2022-03-18 21:02:30,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:02:30" (4/4) ... [2022-03-18 21:02:30,465 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.cJordan [2022-03-18 21:02:30,468 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 21:02:30,468 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 21:02:30,492 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 21:02:30,497 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 21:02:30,497 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 21:02:30,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 113 states have (on average 1.5575221238938053) internal successors, (176), 126 states have internal predecessors, (176), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 21:02:30,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 21:02:30,514 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:30,514 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:30,515 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1155157574, now seen corresponding path program 1 times [2022-03-18 21:02:30,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:30,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327999940] [2022-03-18 21:02:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:30,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:30,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:30,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:30,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327999940] [2022-03-18 21:02:30,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327999940] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:30,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:30,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 21:02:30,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463544664] [2022-03-18 21:02:30,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:30,788 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 21:02:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:30,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 21:02:30,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 21:02:30,807 INFO L87 Difference]: Start difference. First operand has 151 states, 113 states have (on average 1.5575221238938053) internal successors, (176), 126 states have internal predecessors, (176), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 21:02:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:31,111 INFO L93 Difference]: Finished difference Result 168 states and 236 transitions. [2022-03-18 21:02:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 21:02:31,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-03-18 21:02:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:31,119 INFO L225 Difference]: With dead ends: 168 [2022-03-18 21:02:31,119 INFO L226 Difference]: Without dead ends: 157 [2022-03-18 21:02:31,120 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 21:02:31,122 INFO L912 BasicCegarLoop]: 182 mSDtfsCounter, 180 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:31,123 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 286 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-03-18 21:02:31,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2022-03-18 21:02:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 105 states have (on average 1.457142857142857) internal successors, (153), 116 states have internal predecessors, (153), 24 states have call successors, (24), 12 states have call predecessors, (24), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 21:02:31,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2022-03-18 21:02:31,176 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 20 [2022-03-18 21:02:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:31,176 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2022-03-18 21:02:31,176 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 21:02:31,176 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2022-03-18 21:02:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-18 21:02:31,177 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:31,177 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:31,177 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 21:02:31,177 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:31,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1515864402, now seen corresponding path program 1 times [2022-03-18 21:02:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:31,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488314045] [2022-03-18 21:02:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:31,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:31,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:31,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:31,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488314045] [2022-03-18 21:02:31,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488314045] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:31,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:31,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:02:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061258271] [2022-03-18 21:02:31,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:31,304 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:02:31,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:31,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:02:31,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:02:31,305 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:31,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:31,650 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2022-03-18 21:02:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 21:02:31,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-03-18 21:02:31,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:31,652 INFO L225 Difference]: With dead ends: 220 [2022-03-18 21:02:31,652 INFO L226 Difference]: Without dead ends: 219 [2022-03-18 21:02:31,652 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 21:02:31,653 INFO L912 BasicCegarLoop]: 202 mSDtfsCounter, 318 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:31,653 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 280 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-03-18 21:02:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 195. [2022-03-18 21:02:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 153 states have (on average 1.3660130718954249) internal successors, (209), 157 states have internal predecessors, (209), 25 states have call successors, (25), 18 states have call predecessors, (25), 16 states have return successors, (25), 21 states have call predecessors, (25), 18 states have call successors, (25) [2022-03-18 21:02:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 259 transitions. [2022-03-18 21:02:31,665 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 259 transitions. Word has length 26 [2022-03-18 21:02:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:31,665 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 259 transitions. [2022-03-18 21:02:31,665 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 259 transitions. [2022-03-18 21:02:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 21:02:31,666 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:31,666 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:31,666 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 21:02:31,666 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash 252875622, now seen corresponding path program 1 times [2022-03-18 21:02:31,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:31,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173756576] [2022-03-18 21:02:31,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:31,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:31,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:31,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:31,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:31,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:31,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173756576] [2022-03-18 21:02:31,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173756576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:31,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:31,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:02:31,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918115085] [2022-03-18 21:02:31,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:31,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:02:31,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:31,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:02:31,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:02:31,770 INFO L87 Difference]: Start difference. First operand 195 states and 259 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:32,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:32,055 INFO L93 Difference]: Finished difference Result 254 states and 335 transitions. [2022-03-18 21:02:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 21:02:32,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-03-18 21:02:32,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:32,057 INFO L225 Difference]: With dead ends: 254 [2022-03-18 21:02:32,057 INFO L226 Difference]: Without dead ends: 254 [2022-03-18 21:02:32,058 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 21:02:32,058 INFO L912 BasicCegarLoop]: 161 mSDtfsCounter, 320 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:32,059 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 252 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:02:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-03-18 21:02:32,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 217. [2022-03-18 21:02:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 177 states have (on average 1.3728813559322033) internal successors, (243), 181 states have internal predecessors, (243), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 16 states have call successors, (25) [2022-03-18 21:02:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 289 transitions. [2022-03-18 21:02:32,068 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 289 transitions. Word has length 27 [2022-03-18 21:02:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:32,068 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 289 transitions. [2022-03-18 21:02:32,068 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 289 transitions. [2022-03-18 21:02:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-18 21:02:32,069 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:32,069 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:32,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 21:02:32,069 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash -301837211, now seen corresponding path program 1 times [2022-03-18 21:02:32,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:32,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654390411] [2022-03-18 21:02:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:32,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:32,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:32,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654390411] [2022-03-18 21:02:32,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654390411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:32,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:32,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:02:32,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906614745] [2022-03-18 21:02:32,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:32,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:02:32,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:32,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:02:32,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:02:32,164 INFO L87 Difference]: Start difference. First operand 217 states and 289 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:32,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:32,483 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2022-03-18 21:02:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 21:02:32,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-03-18 21:02:32,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:32,484 INFO L225 Difference]: With dead ends: 217 [2022-03-18 21:02:32,484 INFO L226 Difference]: Without dead ends: 217 [2022-03-18 21:02:32,485 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 21:02:32,486 INFO L912 BasicCegarLoop]: 168 mSDtfsCounter, 92 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:32,486 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 256 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-03-18 21:02:32,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-03-18 21:02:32,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 177 states have (on average 1.3672316384180792) internal successors, (242), 181 states have internal predecessors, (242), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 16 states have call successors, (25) [2022-03-18 21:02:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 288 transitions. [2022-03-18 21:02:32,493 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 288 transitions. Word has length 37 [2022-03-18 21:02:32,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:32,493 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 288 transitions. [2022-03-18 21:02:32,494 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 288 transitions. [2022-03-18 21:02:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 21:02:32,495 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:32,495 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:32,495 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 21:02:32,495 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:32,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:32,496 INFO L85 PathProgramCache]: Analyzing trace with hash -141227467, now seen corresponding path program 1 times [2022-03-18 21:02:32,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:32,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919501634] [2022-03-18 21:02:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:32,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:32,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:32,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919501634] [2022-03-18 21:02:32,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919501634] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:32,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:32,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:32,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203174932] [2022-03-18 21:02:32,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:32,610 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:32,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:32,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:32,610 INFO L87 Difference]: Start difference. First operand 217 states and 288 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 21:02:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:32,911 INFO L93 Difference]: Finished difference Result 208 states and 271 transitions. [2022-03-18 21:02:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:32,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2022-03-18 21:02:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:32,912 INFO L225 Difference]: With dead ends: 208 [2022-03-18 21:02:32,912 INFO L226 Difference]: Without dead ends: 208 [2022-03-18 21:02:32,912 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:02:32,913 INFO L912 BasicCegarLoop]: 193 mSDtfsCounter, 459 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:32,913 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 435 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:02:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-03-18 21:02:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2022-03-18 21:02:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 153 states have (on average 1.3594771241830066) internal successors, (208), 156 states have internal predecessors, (208), 20 states have call successors, (20), 15 states have call predecessors, (20), 16 states have return successors, (22), 19 states have call predecessors, (22), 15 states have call successors, (22) [2022-03-18 21:02:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2022-03-18 21:02:32,919 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 45 [2022-03-18 21:02:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:32,919 INFO L478 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2022-03-18 21:02:32,919 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 21:02:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2022-03-18 21:02:32,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 21:02:32,920 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:32,920 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:32,920 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 21:02:32,921 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:32,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:32,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1455239378, now seen corresponding path program 1 times [2022-03-18 21:02:32,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:32,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936946800] [2022-03-18 21:02:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:32,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:32,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 21:02:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 21:02:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:33,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:33,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936946800] [2022-03-18 21:02:33,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936946800] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:33,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:33,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:02:33,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242958364] [2022-03-18 21:02:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:33,029 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:02:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:02:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:02:33,030 INFO L87 Difference]: Start difference. First operand 190 states and 250 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:33,330 INFO L93 Difference]: Finished difference Result 197 states and 257 transitions. [2022-03-18 21:02:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 21:02:33,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 51 [2022-03-18 21:02:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:33,331 INFO L225 Difference]: With dead ends: 197 [2022-03-18 21:02:33,331 INFO L226 Difference]: Without dead ends: 197 [2022-03-18 21:02:33,332 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:02:33,332 INFO L912 BasicCegarLoop]: 167 mSDtfsCounter, 191 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:33,333 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 360 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:02:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-03-18 21:02:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2022-03-18 21:02:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 152 states have (on average 1.3486842105263157) internal successors, (205), 154 states have internal predecessors, (205), 19 states have call successors, (19), 15 states have call predecessors, (19), 16 states have return successors, (22), 19 states have call predecessors, (22), 15 states have call successors, (22) [2022-03-18 21:02:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 246 transitions. [2022-03-18 21:02:33,337 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 246 transitions. Word has length 51 [2022-03-18 21:02:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:33,338 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 246 transitions. [2022-03-18 21:02:33,338 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 246 transitions. [2022-03-18 21:02:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 21:02:33,339 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:33,339 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:33,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 21:02:33,339 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1069507529, now seen corresponding path program 1 times [2022-03-18 21:02:33,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:33,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439180559] [2022-03-18 21:02:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:33,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 21:02:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:33,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:33,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439180559] [2022-03-18 21:02:33,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439180559] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:33,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:33,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:33,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998426111] [2022-03-18 21:02:33,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:33,517 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:33,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:33,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:33,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:33,517 INFO L87 Difference]: Start difference. First operand 188 states and 246 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 21:02:34,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:34,007 INFO L93 Difference]: Finished difference Result 210 states and 270 transitions. [2022-03-18 21:02:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 21:02:34,007 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-03-18 21:02:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:34,009 INFO L225 Difference]: With dead ends: 210 [2022-03-18 21:02:34,009 INFO L226 Difference]: Without dead ends: 210 [2022-03-18 21:02:34,009 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-03-18 21:02:34,012 INFO L912 BasicCegarLoop]: 194 mSDtfsCounter, 562 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:34,012 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 494 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-03-18 21:02:34,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 188. [2022-03-18 21:02:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 152 states have (on average 1.3421052631578947) internal successors, (204), 154 states have internal predecessors, (204), 19 states have call successors, (19), 15 states have call predecessors, (19), 16 states have return successors, (21), 19 states have call predecessors, (21), 15 states have call successors, (21) [2022-03-18 21:02:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 244 transitions. [2022-03-18 21:02:34,022 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 244 transitions. Word has length 50 [2022-03-18 21:02:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:34,022 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 244 transitions. [2022-03-18 21:02:34,023 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 21:02:34,023 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 244 transitions. [2022-03-18 21:02:34,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 21:02:34,024 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:34,024 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:34,024 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 21:02:34,024 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:34,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:34,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1382255258, now seen corresponding path program 1 times [2022-03-18 21:02:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:34,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947340501] [2022-03-18 21:02:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 21:02:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:34,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:34,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947340501] [2022-03-18 21:02:34,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947340501] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:34,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:34,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 21:02:34,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365547926] [2022-03-18 21:02:34,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:34,211 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 21:02:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 21:02:34,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:34,211 INFO L87 Difference]: Start difference. First operand 188 states and 244 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 21:02:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:34,667 INFO L93 Difference]: Finished difference Result 182 states and 235 transitions. [2022-03-18 21:02:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:02:34,668 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2022-03-18 21:02:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:34,669 INFO L225 Difference]: With dead ends: 182 [2022-03-18 21:02:34,669 INFO L226 Difference]: Without dead ends: 182 [2022-03-18 21:02:34,669 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-03-18 21:02:34,670 INFO L912 BasicCegarLoop]: 153 mSDtfsCounter, 481 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:34,670 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 379 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-03-18 21:02:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2022-03-18 21:02:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 142 states have (on average 1.352112676056338) internal successors, (192), 146 states have internal predecessors, (192), 19 states have call successors, (19), 15 states have call predecessors, (19), 14 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-03-18 21:02:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2022-03-18 21:02:34,674 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 52 [2022-03-18 21:02:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:34,674 INFO L478 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2022-03-18 21:02:34,675 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 21:02:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2022-03-18 21:02:34,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 21:02:34,675 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:34,675 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:34,675 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 21:02:34,675 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash -459288966, now seen corresponding path program 1 times [2022-03-18 21:02:34,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:34,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216099998] [2022-03-18 21:02:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:34,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 21:02:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:34,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216099998] [2022-03-18 21:02:34,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216099998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:34,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:34,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 21:02:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754493225] [2022-03-18 21:02:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:34,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 21:02:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 21:02:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:02:34,811 INFO L87 Difference]: Start difference. First operand 176 states and 228 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:02:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:35,023 INFO L93 Difference]: Finished difference Result 178 states and 228 transitions. [2022-03-18 21:02:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 21:02:35,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-03-18 21:02:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:35,024 INFO L225 Difference]: With dead ends: 178 [2022-03-18 21:02:35,024 INFO L226 Difference]: Without dead ends: 91 [2022-03-18 21:02:35,024 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:35,025 INFO L912 BasicCegarLoop]: 146 mSDtfsCounter, 400 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:35,025 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 236 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:02:35,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-03-18 21:02:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-03-18 21:02:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-03-18 21:02:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2022-03-18 21:02:35,027 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 52 [2022-03-18 21:02:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:35,028 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2022-03-18 21:02:35,028 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:02:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2022-03-18 21:02:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-18 21:02:35,028 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:35,028 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:35,028 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 21:02:35,028 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:35,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:35,029 INFO L85 PathProgramCache]: Analyzing trace with hash -273247555, now seen corresponding path program 1 times [2022-03-18 21:02:35,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:35,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821474035] [2022-03-18 21:02:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:35,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:35,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:35,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821474035] [2022-03-18 21:02:35,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821474035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:35,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:35,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:35,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106322617] [2022-03-18 21:02:35,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:35,175 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:35,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:35,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:35,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:35,176 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:35,455 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2022-03-18 21:02:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:02:35,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2022-03-18 21:02:35,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:35,456 INFO L225 Difference]: With dead ends: 91 [2022-03-18 21:02:35,457 INFO L226 Difference]: Without dead ends: 91 [2022-03-18 21:02:35,457 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:02:35,457 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 96 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:35,457 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 244 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:02:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-03-18 21:02:35,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-03-18 21:02:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.164179104477612) internal successors, (78), 68 states have internal predecessors, (78), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-03-18 21:02:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2022-03-18 21:02:35,460 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 59 [2022-03-18 21:02:35,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:35,460 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2022-03-18 21:02:35,460 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2022-03-18 21:02:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 21:02:35,460 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:35,460 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:35,461 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 21:02:35,461 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash 366370572, now seen corresponding path program 1 times [2022-03-18 21:02:35,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:35,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644845048] [2022-03-18 21:02:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:35,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:35,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644845048] [2022-03-18 21:02:35,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644845048] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:35,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:35,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:35,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342894170] [2022-03-18 21:02:35,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:35,597 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:35,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:35,597 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:35,758 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2022-03-18 21:02:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:35,758 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2022-03-18 21:02:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:35,759 INFO L225 Difference]: With dead ends: 103 [2022-03-18 21:02:35,759 INFO L226 Difference]: Without dead ends: 93 [2022-03-18 21:02:35,759 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:35,760 INFO L912 BasicCegarLoop]: 72 mSDtfsCounter, 108 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:35,760 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 306 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-03-18 21:02:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2022-03-18 21:02:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-03-18 21:02:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2022-03-18 21:02:35,762 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 61 [2022-03-18 21:02:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:35,762 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2022-03-18 21:02:35,762 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2022-03-18 21:02:35,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 21:02:35,763 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:35,763 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:35,763 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 21:02:35,763 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash -350640073, now seen corresponding path program 1 times [2022-03-18 21:02:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:35,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800055825] [2022-03-18 21:02:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:35,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:35,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800055825] [2022-03-18 21:02:35,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800055825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:35,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:35,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:35,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239922650] [2022-03-18 21:02:35,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:35,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:35,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:35,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:35,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:35,883 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:35,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:35,992 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2022-03-18 21:02:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 21:02:35,992 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-18 21:02:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:35,993 INFO L225 Difference]: With dead ends: 78 [2022-03-18 21:02:35,993 INFO L226 Difference]: Without dead ends: 78 [2022-03-18 21:02:35,993 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:35,993 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 79 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:35,994 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 195 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-03-18 21:02:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-03-18 21:02:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 21:02:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-03-18 21:02:35,996 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 62 [2022-03-18 21:02:35,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:35,996 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-03-18 21:02:35,996 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-03-18 21:02:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 21:02:35,996 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:35,996 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:35,996 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 21:02:35,996 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:35,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:35,997 INFO L85 PathProgramCache]: Analyzing trace with hash -57237066, now seen corresponding path program 1 times [2022-03-18 21:02:35,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:35,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120127807] [2022-03-18 21:02:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:35,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:36,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:36,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120127807] [2022-03-18 21:02:36,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120127807] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:36,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:36,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863257463] [2022-03-18 21:02:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:36,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:36,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:36,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:36,125 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:36,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:36,249 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2022-03-18 21:02:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:02:36,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-18 21:02:36,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:36,250 INFO L225 Difference]: With dead ends: 89 [2022-03-18 21:02:36,250 INFO L226 Difference]: Without dead ends: 89 [2022-03-18 21:02:36,250 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:02:36,251 INFO L912 BasicCegarLoop]: 79 mSDtfsCounter, 78 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:36,251 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 186 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:36,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-18 21:02:36,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2022-03-18 21:02:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 59 states have internal predecessors, (65), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 21:02:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2022-03-18 21:02:36,253 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 62 [2022-03-18 21:02:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:36,253 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2022-03-18 21:02:36,253 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2022-03-18 21:02:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 21:02:36,254 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:36,254 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:36,254 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-18 21:02:36,254 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:36,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:36,254 INFO L85 PathProgramCache]: Analyzing trace with hash -747542986, now seen corresponding path program 1 times [2022-03-18 21:02:36,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:36,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882719784] [2022-03-18 21:02:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:36,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:36,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:36,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882719784] [2022-03-18 21:02:36,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882719784] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:36,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:36,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:36,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952819079] [2022-03-18 21:02:36,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:36,421 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:36,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:36,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:36,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:36,422 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:36,545 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2022-03-18 21:02:36,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:36,545 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-18 21:02:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:36,546 INFO L225 Difference]: With dead ends: 80 [2022-03-18 21:02:36,546 INFO L226 Difference]: Without dead ends: 80 [2022-03-18 21:02:36,546 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:36,547 INFO L912 BasicCegarLoop]: 64 mSDtfsCounter, 86 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:36,547 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 246 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:36,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-18 21:02:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-03-18 21:02:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.103448275862069) internal successors, (64), 59 states have internal predecessors, (64), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 21:02:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-03-18 21:02:36,549 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 62 [2022-03-18 21:02:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:36,549 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-03-18 21:02:36,549 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-03-18 21:02:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 21:02:36,550 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:36,550 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:36,550 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 21:02:36,550 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1805188072, now seen corresponding path program 1 times [2022-03-18 21:02:36,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:36,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007364228] [2022-03-18 21:02:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:36,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:36,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007364228] [2022-03-18 21:02:36,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007364228] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:36,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:36,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:36,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762776036] [2022-03-18 21:02:36,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:36,687 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:36,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:36,687 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:36,796 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2022-03-18 21:02:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:02:36,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-03-18 21:02:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:36,798 INFO L225 Difference]: With dead ends: 77 [2022-03-18 21:02:36,798 INFO L226 Difference]: Without dead ends: 76 [2022-03-18 21:02:36,798 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:36,798 INFO L912 BasicCegarLoop]: 66 mSDtfsCounter, 92 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:36,798 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 137 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:36,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-18 21:02:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-03-18 21:02:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 states have internal predecessors, (59), 12 states have call successors, (12), 12 states have call predecessors, (12), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 21:02:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-03-18 21:02:36,800 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 63 [2022-03-18 21:02:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:36,800 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-03-18 21:02:36,800 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-03-18 21:02:36,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 21:02:36,801 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:36,801 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:36,801 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 21:02:36,801 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1247346341, now seen corresponding path program 1 times [2022-03-18 21:02:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:36,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539438719] [2022-03-18 21:02:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:36,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:36,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:36,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539438719] [2022-03-18 21:02:36,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539438719] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:36,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:36,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:36,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592210154] [2022-03-18 21:02:36,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:36,913 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:36,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:36,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:36,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:36,913 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:37,096 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2022-03-18 21:02:37,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:02:37,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-03-18 21:02:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:37,097 INFO L225 Difference]: With dead ends: 134 [2022-03-18 21:02:37,097 INFO L226 Difference]: Without dead ends: 134 [2022-03-18 21:02:37,098 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:37,098 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 159 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:37,098 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 184 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-03-18 21:02:37,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-03-18 21:02:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 99 states have (on average 1.0606060606060606) internal successors, (105), 99 states have internal predecessors, (105), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 21:02:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2022-03-18 21:02:37,101 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 63 [2022-03-18 21:02:37,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:37,101 INFO L478 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2022-03-18 21:02:37,101 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2022-03-18 21:02:37,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 21:02:37,102 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:37,102 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:37,102 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 21:02:37,102 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash -359842660, now seen corresponding path program 1 times [2022-03-18 21:02:37,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:37,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190142913] [2022-03-18 21:02:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:37,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:37,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:37,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190142913] [2022-03-18 21:02:37,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190142913] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:37,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:37,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:37,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735846323] [2022-03-18 21:02:37,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:37,251 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:37,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:37,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:37,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:37,251 INFO L87 Difference]: Start difference. First operand 133 states and 138 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:37,415 INFO L93 Difference]: Finished difference Result 133 states and 136 transitions. [2022-03-18 21:02:37,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:37,415 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-03-18 21:02:37,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:37,416 INFO L225 Difference]: With dead ends: 133 [2022-03-18 21:02:37,416 INFO L226 Difference]: Without dead ends: 133 [2022-03-18 21:02:37,416 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:37,416 INFO L912 BasicCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:37,416 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 258 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:02:37,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-03-18 21:02:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-03-18 21:02:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 states have internal predecessors, (103), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 21:02:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2022-03-18 21:02:37,419 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 63 [2022-03-18 21:02:37,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:37,419 INFO L478 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2022-03-18 21:02:37,419 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:37,419 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2022-03-18 21:02:37,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-18 21:02:37,420 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:37,420 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:37,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-18 21:02:37,420 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:37,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:37,420 INFO L85 PathProgramCache]: Analyzing trace with hash 544985405, now seen corresponding path program 1 times [2022-03-18 21:02:37,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:37,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851039261] [2022-03-18 21:02:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:37,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 21:02:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:37,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:37,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851039261] [2022-03-18 21:02:37,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851039261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:37,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:37,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 21:02:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650718780] [2022-03-18 21:02:37,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:37,556 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 21:02:37,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:37,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 21:02:37,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:02:37,557 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 21:02:37,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:37,675 INFO L93 Difference]: Finished difference Result 104 states and 103 transitions. [2022-03-18 21:02:37,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:02:37,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-03-18 21:02:37,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:37,676 INFO L225 Difference]: With dead ends: 104 [2022-03-18 21:02:37,676 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 21:02:37,676 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:37,677 INFO L912 BasicCegarLoop]: 51 mSDtfsCounter, 31 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:37,677 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 143 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:37,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 21:02:37,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 21:02:37,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 21:02:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 21:02:37,678 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2022-03-18 21:02:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:37,678 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 21:02:37,678 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 21:02:37,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 21:02:37,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 21:02:37,680 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 21:02:37,681 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-18 21:02:37,684 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:37,685 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 21:02:37,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:02:37 BasicIcfg [2022-03-18 21:02:37,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 21:02:37,688 INFO L158 Benchmark]: Toolchain (without parser) took 8086.23ms. Allocated memory was 174.1MB in the beginning and 337.6MB in the end (delta: 163.6MB). Free memory was 121.7MB in the beginning and 198.7MB in the end (delta: -76.9MB). Peak memory consumption was 86.7MB. Max. memory is 8.0GB. [2022-03-18 21:02:37,688 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 174.1MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 21:02:37,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.66ms. Allocated memory was 174.1MB in the beginning and 281.0MB in the end (delta: 107.0MB). Free memory was 121.5MB in the beginning and 251.7MB in the end (delta: -130.2MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-03-18 21:02:37,689 INFO L158 Benchmark]: Boogie Preprocessor took 48.69ms. Allocated memory is still 281.0MB. Free memory was 251.7MB in the beginning and 249.3MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-18 21:02:37,689 INFO L158 Benchmark]: RCFGBuilder took 526.21ms. Allocated memory is still 281.0MB. Free memory was 249.3MB in the beginning and 226.7MB in the end (delta: 22.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-03-18 21:02:37,689 INFO L158 Benchmark]: IcfgTransformer took 23.97ms. Allocated memory is still 281.0MB. Free memory was 226.7MB in the beginning and 224.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-18 21:02:37,689 INFO L158 Benchmark]: TraceAbstraction took 7226.64ms. Allocated memory was 281.0MB in the beginning and 337.6MB in the end (delta: 56.6MB). Free memory was 223.6MB in the beginning and 198.7MB in the end (delta: 24.9MB). Peak memory consumption was 81.9MB. Max. memory is 8.0GB. [2022-03-18 21:02:37,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 174.1MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 244.66ms. Allocated memory was 174.1MB in the beginning and 281.0MB in the end (delta: 107.0MB). Free memory was 121.5MB in the beginning and 251.7MB in the end (delta: -130.2MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.69ms. Allocated memory is still 281.0MB. Free memory was 251.7MB in the beginning and 249.3MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 526.21ms. Allocated memory is still 281.0MB. Free memory was 249.3MB in the beginning and 226.7MB in the end (delta: 22.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * IcfgTransformer took 23.97ms. Allocated memory is still 281.0MB. Free memory was 226.7MB in the beginning and 224.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 7226.64ms. Allocated memory was 281.0MB in the beginning and 337.6MB in the end (delta: 56.6MB). Free memory was 223.6MB in the beginning and 198.7MB in the end (delta: 24.9MB). Peak memory consumption was 81.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 581]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3776 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3768 mSDsluCounter, 4877 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2712 mSDsCounter, 1055 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4849 IncrementalHoareTripleChecker+Invalid, 5904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1055 mSolverCounterUnsat, 2165 mSDtfsCounter, 4849 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 352 GetRequests, 165 SyntacticMatches, 4 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=3, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 147 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 929 NumberOfCodeBlocks, 929 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 911 ConstructedInterpolants, 0 QuantifiedInterpolants, 4122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-18 21:02:37,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...