/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 21:02:40,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 21:02:40,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 21:02:40,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 21:02:40,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 21:02:40,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 21:02:40,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 21:02:40,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 21:02:40,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 21:02:40,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 21:02:40,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 21:02:40,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 21:02:40,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 21:02:40,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 21:02:40,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 21:02:40,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 21:02:40,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 21:02:40,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 21:02:40,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 21:02:40,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 21:02:40,549 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 21:02:40,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 21:02:40,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 21:02:40,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 21:02:40,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 21:02:40,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 21:02:40,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 21:02:40,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 21:02:40,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 21:02:40,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 21:02:40,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 21:02:40,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 21:02:40,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 21:02:40,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 21:02:40,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 21:02:40,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 21:02:40,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 21:02:40,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 21:02:40,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 21:02:40,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 21:02:40,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 21:02:40,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 21:02:40,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 21:02:40,570 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 21:02:40,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 21:02:40,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 21:02:40,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 21:02:40,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 21:02:40,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 21:02:40,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 21:02:40,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 21:02:40,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 21:02:40,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 21:02:40,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 21:02:40,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 21:02:40,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 21:02:40,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 21:02:40,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 21:02:40,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 21:02:40,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 21:02:40,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 21:02:40,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:02:40,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 21:02:40,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 21:02:40,574 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 21:02:40,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 21:02:40,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 21:02:40,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 21:02:40,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 21:02:40,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 21:02:40,792 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 21:02:40,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-03-18 21:02:40,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1259a62/7604da35fe9a436d90836ff96353a12c/FLAGf2805965e [2022-03-18 21:02:41,233 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 21:02:41,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-03-18 21:02:41,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1259a62/7604da35fe9a436d90836ff96353a12c/FLAGf2805965e [2022-03-18 21:02:41,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1259a62/7604da35fe9a436d90836ff96353a12c [2022-03-18 21:02:41,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 21:02:41,630 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 21:02:41,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 21:02:41,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 21:02:41,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 21:02:41,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:02:41" (1/1) ... [2022-03-18 21:02:41,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3b468c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:41, skipping insertion in model container [2022-03-18 21:02:41,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:02:41" (1/1) ... [2022-03-18 21:02:41,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 21:02:41,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 21:02:41,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2022-03-18 21:02:41,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:02:41,944 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 21:02:42,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2022-03-18 21:02:42,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:02:42,027 INFO L208 MainTranslator]: Completed translation [2022-03-18 21:02:42,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42 WrapperNode [2022-03-18 21:02:42,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 21:02:42,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 21:02:42,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 21:02:42,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 21:02:42,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42" (1/1) ... [2022-03-18 21:02:42,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42" (1/1) ... [2022-03-18 21:02:42,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42" (1/1) ... [2022-03-18 21:02:42,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42" (1/1) ... [2022-03-18 21:02:42,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42" (1/1) ... [2022-03-18 21:02:42,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42" (1/1) ... [2022-03-18 21:02:42,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42" (1/1) ... [2022-03-18 21:02:42,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 21:02:42,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 21:02:42,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 21:02:42,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 21:02:42,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42" (1/1) ... [2022-03-18 21:02:42,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:02:42,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:02:42,144 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 21:02:42,149 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 21:02:42,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 21:02:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 21:02:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 21:02:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 21:02:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 21:02:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-18 21:02:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 21:02:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 21:02:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 21:02:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 21:02:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 21:02:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 21:02:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-18 21:02:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-03-18 21:02:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-03-18 21:02:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-03-18 21:02:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 21:02:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-03-18 21:02:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 21:02:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 21:02:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 21:02:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 21:02:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 21:02:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 21:02:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 21:02:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-03-18 21:02:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 21:02:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 21:02:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 21:02:42,293 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 21:02:42,294 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 21:02:42,348 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:42,423 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-18 21:02:42,424 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-18 21:02:42,428 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:42,470 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 21:02:42,470 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 21:02:42,563 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:42,577 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 21:02:42,577 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 21:02:42,584 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:42,681 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-18 21:02:42,681 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-18 21:02:42,684 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:42,697 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-18 21:02:42,698 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-18 21:02:42,703 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:02:42,739 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 21:02:42,740 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 21:02:42,777 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 21:02:42,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 21:02:42,790 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-18 21:02:42,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:02:42 BoogieIcfgContainer [2022-03-18 21:02:42,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 21:02:42,793 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 21:02:42,793 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 21:02:42,796 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 21:02:42,799 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:02:42" (1/1) ... [2022-03-18 21:02:42,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:02:42 BasicIcfg [2022-03-18 21:02:42,852 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 21:02:42,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 21:02:42,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 21:02:42,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 21:02:42,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 09:02:41" (1/4) ... [2022-03-18 21:02:42,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13262b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:02:42, skipping insertion in model container [2022-03-18 21:02:42,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:02:42" (2/4) ... [2022-03-18 21:02:42,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13262b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:02:42, skipping insertion in model container [2022-03-18 21:02:42,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:02:42" (3/4) ... [2022-03-18 21:02:42,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13262b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:02:42, skipping insertion in model container [2022-03-18 21:02:42,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:02:42" (4/4) ... [2022-03-18 21:02:42,858 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.cJordan [2022-03-18 21:02:42,862 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 21:02:42,862 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 21:02:42,908 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 21:02:42,912 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 21:02:42,912 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 21:02:42,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 199 states have internal predecessors, (284), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-03-18 21:02:42,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 21:02:42,928 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:42,928 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 21:02:42,928 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:42,931 INFO L85 PathProgramCache]: Analyzing trace with hash 685042341, now seen corresponding path program 1 times [2022-03-18 21:02:42,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:42,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768415319] [2022-03-18 21:02:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:42,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:43,273 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 21:02:43,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:43,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768415319] [2022-03-18 21:02:43,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768415319] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:43,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:43,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 21:02:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023797808] [2022-03-18 21:02:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:43,280 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 21:02:43,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:43,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 21:02:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 21:02:43,336 INFO L87 Difference]: Start difference. First operand has 239 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 199 states have internal predecessors, (284), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 21:02:43,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:43,951 INFO L93 Difference]: Finished difference Result 267 states and 384 transitions. [2022-03-18 21:02:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 21:02:43,953 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 21:02:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:43,961 INFO L225 Difference]: With dead ends: 267 [2022-03-18 21:02:43,961 INFO L226 Difference]: Without dead ends: 256 [2022-03-18 21:02:43,963 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 21:02:43,965 INFO L912 BasicCegarLoop]: 296 mSDtfsCounter, 173 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:43,966 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 446 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:02:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-18 21:02:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 228. [2022-03-18 21:02:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 174 states have (on average 1.4942528735632183) internal successors, (260), 189 states have internal predecessors, (260), 38 states have call successors, (38), 17 states have call predecessors, (38), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 21:02:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 322 transitions. [2022-03-18 21:02:44,007 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 322 transitions. Word has length 20 [2022-03-18 21:02:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:44,007 INFO L478 AbstractCegarLoop]: Abstraction has 228 states and 322 transitions. [2022-03-18 21:02:44,007 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 21:02:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 322 transitions. [2022-03-18 21:02:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-18 21:02:44,008 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:44,009 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] [2022-03-18 21:02:44,009 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 21:02:44,009 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:44,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:44,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1276904425, now seen corresponding path program 1 times [2022-03-18 21:02:44,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:44,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953269829] [2022-03-18 21:02:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:44,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:44,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:44,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:44,158 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 21:02:44,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:44,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953269829] [2022-03-18 21:02:44,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953269829] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:44,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:44,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:02:44,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928378692] [2022-03-18 21:02:44,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:44,160 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:02:44,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:44,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:02:44,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:02:44,161 INFO L87 Difference]: Start difference. First operand 228 states and 322 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:44,667 INFO L93 Difference]: Finished difference Result 344 states and 470 transitions. [2022-03-18 21:02:44,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:02:44,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-03-18 21:02:44,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:44,669 INFO L225 Difference]: With dead ends: 344 [2022-03-18 21:02:44,670 INFO L226 Difference]: Without dead ends: 343 [2022-03-18 21:02:44,670 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:02:44,671 INFO L912 BasicCegarLoop]: 354 mSDtfsCounter, 533 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:44,671 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 465 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:02:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-18 21:02:44,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 301. [2022-03-18 21:02:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 237 states have (on average 1.3924050632911393) internal successors, (330), 240 states have internal predecessors, (330), 37 states have call successors, (37), 23 states have call predecessors, (37), 26 states have return successors, (44), 40 states have call predecessors, (44), 29 states have call successors, (44) [2022-03-18 21:02:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 411 transitions. [2022-03-18 21:02:44,689 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 411 transitions. Word has length 28 [2022-03-18 21:02:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:44,689 INFO L478 AbstractCegarLoop]: Abstraction has 301 states and 411 transitions. [2022-03-18 21:02:44,690 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, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 411 transitions. [2022-03-18 21:02:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-18 21:02:44,690 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:44,690 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] [2022-03-18 21:02:44,691 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 21:02:44,691 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:44,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:44,691 INFO L85 PathProgramCache]: Analyzing trace with hash 42368072, now seen corresponding path program 1 times [2022-03-18 21:02:44,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:44,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847807480] [2022-03-18 21:02:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:44,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:44,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:44,800 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 21:02:44,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:44,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847807480] [2022-03-18 21:02:44,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847807480] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:44,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:44,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:02:44,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606423070] [2022-03-18 21:02:44,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:44,801 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:02:44,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:44,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:02:44,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:02:44,802 INFO L87 Difference]: Start difference. First operand 301 states and 411 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:45,234 INFO L93 Difference]: Finished difference Result 362 states and 486 transitions. [2022-03-18 21:02:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:02:45,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-03-18 21:02:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:45,239 INFO L225 Difference]: With dead ends: 362 [2022-03-18 21:02:45,239 INFO L226 Difference]: Without dead ends: 362 [2022-03-18 21:02:45,240 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:02:45,247 INFO L912 BasicCegarLoop]: 263 mSDtfsCounter, 568 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:45,248 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 378 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-18 21:02:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 341. [2022-03-18 21:02:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 278 states have (on average 1.3848920863309353) internal successors, (385), 279 states have internal predecessors, (385), 33 states have call successors, (33), 23 states have call predecessors, (33), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-03-18 21:02:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2022-03-18 21:02:45,287 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 462 transitions. Word has length 28 [2022-03-18 21:02:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:45,287 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 462 transitions. [2022-03-18 21:02:45,287 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 462 transitions. [2022-03-18 21:02:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-18 21:02:45,289 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:45,289 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] [2022-03-18 21:02:45,289 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 21:02:45,289 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:45,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1039161410, now seen corresponding path program 1 times [2022-03-18 21:02:45,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:45,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657908471] [2022-03-18 21:02:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:45,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:45,394 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 21:02:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:45,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657908471] [2022-03-18 21:02:45,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657908471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:45,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:45,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:02:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634259153] [2022-03-18 21:02:45,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:45,395 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:02:45,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:02:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:02:45,395 INFO L87 Difference]: Start difference. First operand 341 states and 462 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:45,729 INFO L93 Difference]: Finished difference Result 340 states and 459 transitions. [2022-03-18 21:02:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:02:45,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-03-18 21:02:45,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:45,731 INFO L225 Difference]: With dead ends: 340 [2022-03-18 21:02:45,731 INFO L226 Difference]: Without dead ends: 340 [2022-03-18 21:02:45,732 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 21:02:45,732 INFO L912 BasicCegarLoop]: 264 mSDtfsCounter, 343 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:45,733 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 385 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-03-18 21:02:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-03-18 21:02:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 278 states have (on average 1.3776978417266188) internal successors, (383), 278 states have internal predecessors, (383), 32 states have call successors, (32), 23 states have call predecessors, (32), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-03-18 21:02:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 459 transitions. [2022-03-18 21:02:45,750 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 459 transitions. Word has length 38 [2022-03-18 21:02:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:45,750 INFO L478 AbstractCegarLoop]: Abstraction has 340 states and 459 transitions. [2022-03-18 21:02:45,750 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, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:02:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 459 transitions. [2022-03-18 21:02:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-18 21:02:45,752 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:45,752 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] [2022-03-18 21:02:45,753 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 21:02:45,753 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash 827623692, now seen corresponding path program 1 times [2022-03-18 21:02:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:45,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187529657] [2022-03-18 21:02:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:45,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:45,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:45,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:45,876 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 21:02:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:45,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187529657] [2022-03-18 21:02:45,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187529657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:45,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:45,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:02:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920178659] [2022-03-18 21:02:45,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:45,877 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:02:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:02:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:02:45,878 INFO L87 Difference]: Start difference. First operand 340 states and 459 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 21:02:46,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:46,420 INFO L93 Difference]: Finished difference Result 319 states and 423 transitions. [2022-03-18 21:02:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 21:02:46,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-03-18 21:02:46,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:46,423 INFO L225 Difference]: With dead ends: 319 [2022-03-18 21:02:46,423 INFO L226 Difference]: Without dead ends: 319 [2022-03-18 21:02:46,423 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:46,426 INFO L912 BasicCegarLoop]: 298 mSDtfsCounter, 744 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:46,428 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 543 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:02:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-03-18 21:02:46,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 301. [2022-03-18 21:02:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 244 states have (on average 1.3688524590163935) internal successors, (334), 244 states have internal predecessors, (334), 29 states have call successors, (29), 21 states have call predecessors, (29), 27 states have return successors, (39), 36 states have call predecessors, (39), 24 states have call successors, (39) [2022-03-18 21:02:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 402 transitions. [2022-03-18 21:02:46,444 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 402 transitions. Word has length 46 [2022-03-18 21:02:46,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:46,445 INFO L478 AbstractCegarLoop]: Abstraction has 301 states and 402 transitions. [2022-03-18 21:02:46,445 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 21:02:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 402 transitions. [2022-03-18 21:02:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 21:02:46,452 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:46,452 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 21:02:46,452 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 21:02:46,452 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:46,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1073883700, now seen corresponding path program 1 times [2022-03-18 21:02:46,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:46,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969458944] [2022-03-18 21:02:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:46,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:46,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 21:02:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:46,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:46,713 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 21:02:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:46,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969458944] [2022-03-18 21:02:46,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969458944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:46,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:46,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:46,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680115133] [2022-03-18 21:02:46,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:46,714 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:46,715 INFO L87 Difference]: Start difference. First operand 301 states and 402 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:02:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:47,421 INFO L93 Difference]: Finished difference Result 322 states and 425 transitions. [2022-03-18 21:02:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:02:47,421 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-03-18 21:02:47,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:47,423 INFO L225 Difference]: With dead ends: 322 [2022-03-18 21:02:47,423 INFO L226 Difference]: Without dead ends: 322 [2022-03-18 21:02:47,423 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:02:47,424 INFO L912 BasicCegarLoop]: 252 mSDtfsCounter, 527 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:47,424 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 417 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:02:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-03-18 21:02:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2022-03-18 21:02:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 256 states have (on average 1.359375) internal successors, (348), 255 states have internal predecessors, (348), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-03-18 21:02:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 418 transitions. [2022-03-18 21:02:47,431 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 418 transitions. Word has length 45 [2022-03-18 21:02:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:47,432 INFO L478 AbstractCegarLoop]: Abstraction has 315 states and 418 transitions. [2022-03-18 21:02:47,432 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:02:47,432 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 418 transitions. [2022-03-18 21:02:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-18 21:02:47,433 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:47,433 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] [2022-03-18 21:02:47,433 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 21:02:47,433 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1039481029, now seen corresponding path program 1 times [2022-03-18 21:02:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:47,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097704169] [2022-03-18 21:02:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:47,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:47,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 21:02:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:47,630 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 21:02:47,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:47,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097704169] [2022-03-18 21:02:47,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097704169] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:47,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:47,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:47,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321965698] [2022-03-18 21:02:47,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:47,632 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:47,632 INFO L87 Difference]: Start difference. First operand 315 states and 418 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:02:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:48,391 INFO L93 Difference]: Finished difference Result 322 states and 424 transitions. [2022-03-18 21:02:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:02:48,391 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-03-18 21:02:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:48,393 INFO L225 Difference]: With dead ends: 322 [2022-03-18 21:02:48,393 INFO L226 Difference]: Without dead ends: 322 [2022-03-18 21:02:48,393 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:02:48,394 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 645 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:48,394 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 584 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:02:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-03-18 21:02:48,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2022-03-18 21:02:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 257 states have (on average 1.3579766536964981) internal successors, (349), 256 states have internal predecessors, (349), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-03-18 21:02:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 419 transitions. [2022-03-18 21:02:48,401 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 419 transitions. Word has length 46 [2022-03-18 21:02:48,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:48,401 INFO L478 AbstractCegarLoop]: Abstraction has 316 states and 419 transitions. [2022-03-18 21:02:48,402 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:02:48,402 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 419 transitions. [2022-03-18 21:02:48,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-18 21:02:48,403 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:48,403 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] [2022-03-18 21:02:48,403 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 21:02:48,403 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:48,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2137589877, now seen corresponding path program 1 times [2022-03-18 21:02:48,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:48,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535091424] [2022-03-18 21:02:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:48,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:48,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:48,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 21:02:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:48,518 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 21:02:48,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:48,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535091424] [2022-03-18 21:02:48,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535091424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:48,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:48,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:02:48,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239827775] [2022-03-18 21:02:48,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:48,519 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:02:48,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:48,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:02:48,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:02:48,520 INFO L87 Difference]: Start difference. First operand 316 states and 419 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:02:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:48,934 INFO L93 Difference]: Finished difference Result 310 states and 408 transitions. [2022-03-18 21:02:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:02:48,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-03-18 21:02:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:48,935 INFO L225 Difference]: With dead ends: 310 [2022-03-18 21:02:48,935 INFO L226 Difference]: Without dead ends: 102 [2022-03-18 21:02:48,935 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:48,936 INFO L912 BasicCegarLoop]: 247 mSDtfsCounter, 432 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:48,936 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 403 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-03-18 21:02:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-03-18 21:02:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 15 states have call successors, (15), 13 states have call predecessors, (15), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-03-18 21:02:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2022-03-18 21:02:48,939 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 47 [2022-03-18 21:02:48,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:48,939 INFO L478 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2022-03-18 21:02:48,939 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, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:02:48,939 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2022-03-18 21:02:48,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 21:02:48,939 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:48,939 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] [2022-03-18 21:02:48,940 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 21:02:48,940 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:48,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:48,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1910683918, now seen corresponding path program 1 times [2022-03-18 21:02:48,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:48,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648907554] [2022-03-18 21:02:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:48,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 21:02:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 21:02:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,110 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 21:02:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:49,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648907554] [2022-03-18 21:02:49,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648907554] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:49,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:49,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:02:49,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815550823] [2022-03-18 21:02:49,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:49,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:02:49,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:02:49,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:02:49,111 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:49,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:49,265 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2022-03-18 21:02:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:02:49,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2022-03-18 21:02:49,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:49,266 INFO L225 Difference]: With dead ends: 100 [2022-03-18 21:02:49,266 INFO L226 Difference]: Without dead ends: 100 [2022-03-18 21:02:49,266 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 21:02:49,269 INFO L912 BasicCegarLoop]: 84 mSDtfsCounter, 74 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:49,269 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 208 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-18 21:02:49,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-03-18 21:02:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-03-18 21:02:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2022-03-18 21:02:49,271 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 53 [2022-03-18 21:02:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:49,271 INFO L478 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2022-03-18 21:02:49,271 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2022-03-18 21:02:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 21:02:49,272 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:49,272 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] [2022-03-18 21:02:49,272 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 21:02:49,272 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash -948674633, now seen corresponding path program 1 times [2022-03-18 21:02:49,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:49,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68241196] [2022-03-18 21:02:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:49,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,409 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 21:02:49,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:49,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68241196] [2022-03-18 21:02:49,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68241196] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:49,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:49,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 21:02:49,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178089460] [2022-03-18 21:02:49,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:49,410 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 21:02:49,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:49,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 21:02:49,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:02:49,410 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:49,524 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2022-03-18 21:02:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 21:02:49,524 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-03-18 21:02:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:49,525 INFO L225 Difference]: With dead ends: 118 [2022-03-18 21:02:49,525 INFO L226 Difference]: Without dead ends: 111 [2022-03-18 21:02:49,525 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:49,525 INFO L912 BasicCegarLoop]: 76 mSDtfsCounter, 106 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:49,526 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 308 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-03-18 21:02:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-03-18 21:02:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.1875) internal successors, (95), 81 states have internal predecessors, (95), 14 states have call successors, (14), 13 states have call predecessors, (14), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-03-18 21:02:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2022-03-18 21:02:49,528 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 57 [2022-03-18 21:02:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:49,528 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2022-03-18 21:02:49,528 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:49,528 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2022-03-18 21:02:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 21:02:49,528 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:49,528 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] [2022-03-18 21:02:49,529 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 21:02:49,529 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1641862871, now seen corresponding path program 1 times [2022-03-18 21:02:49,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:49,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655540112] [2022-03-18 21:02:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:49,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,665 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 21:02:49,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:49,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655540112] [2022-03-18 21:02:49,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655540112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:49,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:49,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 21:02:49,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971842904] [2022-03-18 21:02:49,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:49,665 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 21:02:49,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:49,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 21:02:49,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:02:49,666 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:49,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:49,831 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-03-18 21:02:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:49,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-03-18 21:02:49,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:49,832 INFO L225 Difference]: With dead ends: 109 [2022-03-18 21:02:49,832 INFO L226 Difference]: Without dead ends: 109 [2022-03-18 21:02:49,832 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-03-18 21:02:49,833 INFO L912 BasicCegarLoop]: 76 mSDtfsCounter, 59 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:49,833 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 305 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-03-18 21:02:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-03-18 21:02:49,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 82 states have internal predecessors, (96), 14 states have call successors, (14), 13 states have call predecessors, (14), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-03-18 21:02:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2022-03-18 21:02:49,835 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 57 [2022-03-18 21:02:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:49,835 INFO L478 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2022-03-18 21:02:49,836 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2022-03-18 21:02:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 21:02:49,836 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:49,836 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] [2022-03-18 21:02:49,836 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 21:02:49,836 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1083966817, now seen corresponding path program 1 times [2022-03-18 21:02:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:49,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593850996] [2022-03-18 21:02:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:49,931 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 21:02:49,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:49,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593850996] [2022-03-18 21:02:49,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593850996] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:49,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:49,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:02:49,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976033809] [2022-03-18 21:02:49,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:49,932 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:02:49,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:02:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:02:49,933 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 21:02:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:50,072 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2022-03-18 21:02:50,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 21:02:50,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2022-03-18 21:02:50,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:50,073 INFO L225 Difference]: With dead ends: 196 [2022-03-18 21:02:50,073 INFO L226 Difference]: Without dead ends: 196 [2022-03-18 21:02:50,073 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:02:50,074 INFO L912 BasicCegarLoop]: 83 mSDtfsCounter, 183 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:50,074 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 208 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-03-18 21:02:50,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2022-03-18 21:02:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 144 states have (on average 1.1875) internal successors, (171), 146 states have internal predecessors, (171), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (18), 17 states have call predecessors, (18), 14 states have call successors, (18) [2022-03-18 21:02:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 210 transitions. [2022-03-18 21:02:50,077 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 210 transitions. Word has length 58 [2022-03-18 21:02:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:50,077 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 210 transitions. [2022-03-18 21:02:50,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 21:02:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 210 transitions. [2022-03-18 21:02:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 21:02:50,078 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:50,078 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] [2022-03-18 21:02:50,078 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 21:02:50,078 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1971470498, now seen corresponding path program 1 times [2022-03-18 21:02:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:50,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342015548] [2022-03-18 21:02:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:50,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,223 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 21:02:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:50,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342015548] [2022-03-18 21:02:50,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342015548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:50,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:50,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 21:02:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974345451] [2022-03-18 21:02:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:50,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 21:02:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 21:02:50,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:02:50,224 INFO L87 Difference]: Start difference. First operand 184 states and 210 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:50,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:50,314 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2022-03-18 21:02:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:02:50,314 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-18 21:02:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:50,315 INFO L225 Difference]: With dead ends: 172 [2022-03-18 21:02:50,315 INFO L226 Difference]: Without dead ends: 172 [2022-03-18 21:02:50,315 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:02:50,315 INFO L912 BasicCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:50,316 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 256 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:50,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-03-18 21:02:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-03-18 21:02:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 132 states have (on average 1.1590909090909092) internal successors, (153), 134 states have internal predecessors, (153), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (18), 17 states have call predecessors, (18), 14 states have call successors, (18) [2022-03-18 21:02:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2022-03-18 21:02:50,319 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 58 [2022-03-18 21:02:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:50,319 INFO L478 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2022-03-18 21:02:50,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2022-03-18 21:02:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 21:02:50,319 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:50,319 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 21:02:50,320 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-18 21:02:50,320 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:50,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:50,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2034770721, now seen corresponding path program 1 times [2022-03-18 21:02:50,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:50,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331224778] [2022-03-18 21:02:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:50,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 21:02:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,483 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 21:02:50,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:50,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331224778] [2022-03-18 21:02:50,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331224778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:50,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:50,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:50,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976298317] [2022-03-18 21:02:50,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:50,484 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:50,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:50,485 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:50,746 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2022-03-18 21:02:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:02:50,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-03-18 21:02:50,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:50,747 INFO L225 Difference]: With dead ends: 160 [2022-03-18 21:02:50,747 INFO L226 Difference]: Without dead ends: 156 [2022-03-18 21:02:50,747 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 21:02:50,747 INFO L912 BasicCegarLoop]: 70 mSDtfsCounter, 144 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:50,748 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 257 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-03-18 21:02:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-03-18 21:02:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 120 states have internal predecessors, (135), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-03-18 21:02:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 172 transitions. [2022-03-18 21:02:50,751 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 172 transitions. Word has length 62 [2022-03-18 21:02:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:50,751 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 172 transitions. [2022-03-18 21:02:50,751 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 172 transitions. [2022-03-18 21:02:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-18 21:02:50,751 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:50,751 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] [2022-03-18 21:02:50,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 21:02:50,752 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:50,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1057027574, now seen corresponding path program 1 times [2022-03-18 21:02:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:50,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610314564] [2022-03-18 21:02:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:50,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 21:02:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:50,868 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 21:02:50,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:50,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610314564] [2022-03-18 21:02:50,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610314564] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:50,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:50,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:50,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82438886] [2022-03-18 21:02:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:50,869 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:50,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:50,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:50,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:50,869 INFO L87 Difference]: Start difference. First operand 156 states and 172 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:50,964 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2022-03-18 21:02:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 21:02:50,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-03-18 21:02:50,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:50,965 INFO L225 Difference]: With dead ends: 168 [2022-03-18 21:02:50,965 INFO L226 Difference]: Without dead ends: 168 [2022-03-18 21:02:50,965 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 21:02:50,965 INFO L912 BasicCegarLoop]: 73 mSDtfsCounter, 103 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:50,965 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 207 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-03-18 21:02:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2022-03-18 21:02:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 126 states have internal predecessors, (141), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-03-18 21:02:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2022-03-18 21:02:50,969 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 64 [2022-03-18 21:02:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:50,969 INFO L478 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2022-03-18 21:02:50,969 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2022-03-18 21:02:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-18 21:02:50,969 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:50,969 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] [2022-03-18 21:02:50,969 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 21:02:50,970 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash 763624567, now seen corresponding path program 1 times [2022-03-18 21:02:50,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:50,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869584078] [2022-03-18 21:02:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:50,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 21:02:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:51,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:51,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869584078] [2022-03-18 21:02:51,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869584078] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:51,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:51,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:51,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247373384] [2022-03-18 21:02:51,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:51,079 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:51,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:51,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:51,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:51,080 INFO L87 Difference]: Start difference. First operand 162 states and 178 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:51,236 INFO L93 Difference]: Finished difference Result 179 states and 196 transitions. [2022-03-18 21:02:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:02:51,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-03-18 21:02:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:51,237 INFO L225 Difference]: With dead ends: 179 [2022-03-18 21:02:51,237 INFO L226 Difference]: Without dead ends: 177 [2022-03-18 21:02:51,237 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 21:02:51,237 INFO L912 BasicCegarLoop]: 84 mSDtfsCounter, 78 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:51,237 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 215 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-03-18 21:02:51,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 166. [2022-03-18 21:02:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.125) internal successors, (144), 130 states have internal predecessors, (144), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-03-18 21:02:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2022-03-18 21:02:51,240 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 64 [2022-03-18 21:02:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:51,240 INFO L478 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2022-03-18 21:02:51,241 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:51,241 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2022-03-18 21:02:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-18 21:02:51,241 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:51,241 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] [2022-03-18 21:02:51,241 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 21:02:51,241 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1206614856, now seen corresponding path program 1 times [2022-03-18 21:02:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:51,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153212664] [2022-03-18 21:02:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:51,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 21:02:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,401 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 21:02:51,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:51,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153212664] [2022-03-18 21:02:51,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153212664] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:51,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:51,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:51,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807731037] [2022-03-18 21:02:51,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:51,402 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:51,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:51,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:51,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:51,403 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:51,569 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions. [2022-03-18 21:02:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-03-18 21:02:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:51,571 INFO L225 Difference]: With dead ends: 175 [2022-03-18 21:02:51,571 INFO L226 Difference]: Without dead ends: 175 [2022-03-18 21:02:51,571 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 21:02:51,571 INFO L912 BasicCegarLoop]: 77 mSDtfsCounter, 87 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:51,571 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 337 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:02:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-03-18 21:02:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2022-03-18 21:02:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.109375) internal successors, (142), 130 states have internal predecessors, (142), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-03-18 21:02:51,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2022-03-18 21:02:51,575 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 64 [2022-03-18 21:02:51,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:51,575 INFO L478 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2022-03-18 21:02:51,575 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2022-03-18 21:02:51,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-18 21:02:51,576 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:51,576 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] [2022-03-18 21:02:51,576 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-18 21:02:51,576 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2128246060, now seen corresponding path program 1 times [2022-03-18 21:02:51,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:51,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363921608] [2022-03-18 21:02:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:51,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 21:02:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:51,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:51,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363921608] [2022-03-18 21:02:51,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363921608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:51,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:51,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:51,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948512568] [2022-03-18 21:02:51,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:51,757 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:51,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:51,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:51,758 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:52,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:52,054 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2022-03-18 21:02:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:02:52,054 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-03-18 21:02:52,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:52,055 INFO L225 Difference]: With dead ends: 163 [2022-03-18 21:02:52,055 INFO L226 Difference]: Without dead ends: 144 [2022-03-18 21:02:52,055 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:02:52,055 INFO L912 BasicCegarLoop]: 66 mSDtfsCounter, 205 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:52,055 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 154 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-03-18 21:02:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-03-18 21:02:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 109 states have (on average 1.091743119266055) internal successors, (119), 110 states have internal predecessors, (119), 20 states have call successors, (20), 19 states have call predecessors, (20), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 21:02:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2022-03-18 21:02:52,058 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 65 [2022-03-18 21:02:52,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:52,058 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2022-03-18 21:02:52,058 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:52,058 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2022-03-18 21:02:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-18 21:02:52,059 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:52,059 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] [2022-03-18 21:02:52,059 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-18 21:02:52,059 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:52,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:52,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1266450091, now seen corresponding path program 1 times [2022-03-18 21:02:52,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:52,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117098639] [2022-03-18 21:02:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:52,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 21:02:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,164 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 21:02:52,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:52,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117098639] [2022-03-18 21:02:52,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117098639] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:52,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:52,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:52,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689364154] [2022-03-18 21:02:52,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:52,165 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:52,166 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:52,260 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2022-03-18 21:02:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:02:52,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-03-18 21:02:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:52,261 INFO L225 Difference]: With dead ends: 139 [2022-03-18 21:02:52,261 INFO L226 Difference]: Without dead ends: 137 [2022-03-18 21:02:52,261 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 21:02:52,261 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 72 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:52,261 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 155 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-03-18 21:02:52,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-03-18 21:02:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.058252427184466) internal successors, (109), 103 states have internal predecessors, (109), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 21:02:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 142 transitions. [2022-03-18 21:02:52,264 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 142 transitions. Word has length 65 [2022-03-18 21:02:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:52,264 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 142 transitions. [2022-03-18 21:02:52,264 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 142 transitions. [2022-03-18 21:02:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-18 21:02:52,265 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:52,265 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] [2022-03-18 21:02:52,265 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-18 21:02:52,265 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:52,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash 79966819, now seen corresponding path program 1 times [2022-03-18 21:02:52,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:52,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687988263] [2022-03-18 21:02:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:52,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 21:02:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,435 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 21:02:52,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:52,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687988263] [2022-03-18 21:02:52,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687988263] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:52,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:52,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:52,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517033239] [2022-03-18 21:02:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:52,436 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:52,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:52,436 INFO L87 Difference]: Start difference. First operand 137 states and 142 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:52,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:52,597 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2022-03-18 21:02:52,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:52,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2022-03-18 21:02:52,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:52,598 INFO L225 Difference]: With dead ends: 137 [2022-03-18 21:02:52,598 INFO L226 Difference]: Without dead ends: 137 [2022-03-18 21:02:52,598 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 21:02:52,598 INFO L912 BasicCegarLoop]: 65 mSDtfsCounter, 37 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:52,598 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 260 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-03-18 21:02:52,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-03-18 21:02:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 21:02:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2022-03-18 21:02:52,601 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 65 [2022-03-18 21:02:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:52,601 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2022-03-18 21:02:52,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2022-03-18 21:02:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-18 21:02:52,601 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:52,601 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, 1, 1] [2022-03-18 21:02:52,601 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-18 21:02:52,602 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash -117181948, now seen corresponding path program 1 times [2022-03-18 21:02:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:52,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457583797] [2022-03-18 21:02:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 21:02:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 21:02:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 21:02:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:52,749 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 21:02:52,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:52,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457583797] [2022-03-18 21:02:52,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457583797] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:52,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:52,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 21:02:52,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209524599] [2022-03-18 21:02:52,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:52,750 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 21:02:52,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:52,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 21:02:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:02:52,750 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 21:02:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:52,887 INFO L93 Difference]: Finished difference Result 108 states and 107 transitions. [2022-03-18 21:02:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:02:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-03-18 21:02:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:52,888 INFO L225 Difference]: With dead ends: 108 [2022-03-18 21:02:52,888 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 21:02:52,888 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 21:02:52,889 INFO L912 BasicCegarLoop]: 53 mSDtfsCounter, 31 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:52,889 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 186 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:02:52,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 21:02:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 21:02:52,890 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 21:02:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 21:02:52,890 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-03-18 21:02:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:52,890 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 21:02:52,890 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 21:02:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 21:02:52,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 21:02:52,893 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 21:02:52,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-18 21:02:52,901 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:52,902 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 21:02:52,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:02:52 BasicIcfg [2022-03-18 21:02:52,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 21:02:52,927 INFO L158 Benchmark]: Toolchain (without parser) took 11297.53ms. Allocated memory was 188.7MB in the beginning and 383.8MB in the end (delta: 195.0MB). Free memory was 135.4MB in the beginning and 354.5MB in the end (delta: -219.0MB). Peak memory consumption was 200.6MB. Max. memory is 8.0GB. [2022-03-18 21:02:52,927 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 21:02:52,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.98ms. Allocated memory was 188.7MB in the beginning and 235.9MB in the end (delta: 47.2MB). Free memory was 135.3MB in the beginning and 202.1MB in the end (delta: -66.9MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-03-18 21:02:52,930 INFO L158 Benchmark]: Boogie Preprocessor took 73.27ms. Allocated memory is still 235.9MB. Free memory was 202.1MB in the beginning and 199.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-18 21:02:52,931 INFO L158 Benchmark]: RCFGBuilder took 689.63ms. Allocated memory is still 235.9MB. Free memory was 199.0MB in the beginning and 165.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-03-18 21:02:52,931 INFO L158 Benchmark]: IcfgTransformer took 59.67ms. Allocated memory is still 235.9MB. Free memory was 165.5MB in the beginning and 161.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-18 21:02:52,931 INFO L158 Benchmark]: TraceAbstraction took 10073.30ms. Allocated memory was 235.9MB in the beginning and 383.8MB in the end (delta: 147.8MB). Free memory was 160.9MB in the beginning and 354.5MB in the end (delta: -193.6MB). Peak memory consumption was 177.9MB. Max. memory is 8.0GB. [2022-03-18 21:02:52,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 395.98ms. Allocated memory was 188.7MB in the beginning and 235.9MB in the end (delta: 47.2MB). Free memory was 135.3MB in the beginning and 202.1MB in the end (delta: -66.9MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.27ms. Allocated memory is still 235.9MB. Free memory was 202.1MB in the beginning and 199.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 689.63ms. Allocated memory is still 235.9MB. Free memory was 199.0MB in the beginning and 165.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * IcfgTransformer took 59.67ms. Allocated memory is still 235.9MB. Free memory was 165.5MB in the beginning and 161.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 10073.30ms. Allocated memory was 235.9MB in the beginning and 383.8MB in the end (delta: 147.8MB). Free memory was 160.9MB in the beginning and 354.5MB in the end (delta: -193.6MB). Peak memory consumption was 177.9MB. 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: 1013]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.0s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5226 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5209 mSDsluCounter, 6677 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3497 mSDsCounter, 1267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6359 IncrementalHoareTripleChecker+Invalid, 7626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1267 mSolverCounterUnsat, 3180 mSDtfsCounter, 6359 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 419 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=3, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 169 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1106 NumberOfCodeBlocks, 1106 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1085 ConstructedInterpolants, 0 QuantifiedInterpolants, 5192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-18 21:02:52,986 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...