/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 06:47:52,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 06:47:52,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 06:47:52,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 06:47:52,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 06:47:52,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 06:47:52,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 06:47:52,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 06:47:52,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 06:47:52,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 06:47:52,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 06:47:52,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 06:47:52,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 06:47:52,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 06:47:52,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 06:47:52,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 06:47:52,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 06:47:52,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 06:47:52,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 06:47:52,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 06:47:52,533 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 06:47:52,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 06:47:52,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 06:47:52,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 06:47:52,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 06:47:52,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-19 06:47:52,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-19 06:47:52,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-19 06:47:52,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-19 06:47:52,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-19 06:47:52,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-19 06:47:52,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 06:47:52,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 06:47:52,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 06:47:52,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 06:47:52,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 06:47:52,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 06:47:52,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 06:47:52,567 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 06:47:52,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 06:47:52,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 06:47:52,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 06:47:52,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 06:47:52,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 06:47:52,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 06:47:52,568 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 06:47:52,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 06:47:52,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 06:47:52,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 06:47:52,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 06:47:52,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 06:47:52,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 06:47:52,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 06:47:52,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:47:52,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 06:47:52,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 06:47:52,570 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 06:47:52,570 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 06:47:52,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 06:47:52,570 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 06:47:52,570 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 06:47:52,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 06:47:52,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 06:47:52,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 06:47:52,832 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 06:47:52,833 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 06:47:52,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-03-19 06:47:52,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b6bf2549/b69b1baeab884bb28d57bc6d64d11926/FLAG78b87b620 [2022-03-19 06:47:53,378 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 06:47:53,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-03-19 06:47:53,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b6bf2549/b69b1baeab884bb28d57bc6d64d11926/FLAG78b87b620 [2022-03-19 06:47:53,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b6bf2549/b69b1baeab884bb28d57bc6d64d11926 [2022-03-19 06:47:53,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 06:47:53,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 06:47:53,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 06:47:53,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 06:47:53,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 06:47:53,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:47:53" (1/1) ... [2022-03-19 06:47:53,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112cf157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:53, skipping insertion in model container [2022-03-19 06:47:53,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:47:53" (1/1) ... [2022-03-19 06:47:53,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 06:47:53,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 06:47:54,262 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-2.c[29656,29669] [2022-03-19 06:47:54,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:47:54,271 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 06:47:54,348 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-2.c[29656,29669] [2022-03-19 06:47:54,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:47:54,371 INFO L208 MainTranslator]: Completed translation [2022-03-19 06:47:54,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54 WrapperNode [2022-03-19 06:47:54,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 06:47:54,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 06:47:54,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 06:47:54,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 06:47:54,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54" (1/1) ... [2022-03-19 06:47:54,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54" (1/1) ... [2022-03-19 06:47:54,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54" (1/1) ... [2022-03-19 06:47:54,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54" (1/1) ... [2022-03-19 06:47:54,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54" (1/1) ... [2022-03-19 06:47:54,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54" (1/1) ... [2022-03-19 06:47:54,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54" (1/1) ... [2022-03-19 06:47:54,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 06:47:54,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 06:47:54,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 06:47:54,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 06:47:54,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54" (1/1) ... [2022-03-19 06:47:54,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:47:54,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:47:54,507 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) [2022-03-19 06:47:54,535 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 [2022-03-19 06:47:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 06:47:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 06:47:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 06:47:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 06:47:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 06:47:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-19 06:47:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 06:47:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 06:47:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 06:47:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 06:47:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 06:47:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 06:47:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-19 06:47:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-03-19 06:47:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-03-19 06:47:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-03-19 06:47:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-19 06:47:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-03-19 06:47:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 06:47:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 06:47:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 06:47:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 06:47:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 06:47:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 06:47:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 06:47:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 06:47:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 06:47:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 06:47:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 06:47:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 06:47:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 06:47:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 06:47:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 06:47:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 06:47:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 06:47:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 06:47:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 06:47:54,709 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 06:47:54,710 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 06:47:54,792 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:47:54,884 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-19 06:47:54,885 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-19 06:47:54,890 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:47:54,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 06:47:54,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 06:47:55,006 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:47:55,019 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 06:47:55,020 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 06:47:55,026 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:47:55,145 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-19 06:47:55,145 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-19 06:47:55,150 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:47:55,169 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-19 06:47:55,170 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-19 06:47:55,175 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:47:55,197 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 06:47:55,197 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 06:47:55,238 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 06:47:55,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 06:47:55,249 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-19 06:47:55,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:47:55 BoogieIcfgContainer [2022-03-19 06:47:55,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 06:47:55,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 06:47:55,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 06:47:55,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 06:47:55,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 06:47:53" (1/3) ... [2022-03-19 06:47:55,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1f9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:47:55, skipping insertion in model container [2022-03-19 06:47:55,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:47:54" (2/3) ... [2022-03-19 06:47:55,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1f9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:47:55, skipping insertion in model container [2022-03-19 06:47:55,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:47:55" (3/3) ... [2022-03-19 06:47:55,261 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2022-03-19 06:47:55,265 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 06:47:55,265 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 06:47:55,308 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 06:47:55,314 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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 [2022-03-19 06:47:55,314 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 06:47:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 200 states have internal predecessors, (284), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-03-19 06:47:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-19 06:47:55,344 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:47:55,344 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] [2022-03-19 06:47:55,345 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:47:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:47:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1235546278, now seen corresponding path program 1 times [2022-03-19 06:47:55,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:55,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [187026542] [2022-03-19 06:47:55,367 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:47:55,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1235546278, now seen corresponding path program 2 times [2022-03-19 06:47:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:47:55,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868011091] [2022-03-19 06:47:55,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:47:55,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:47:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:55,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:47:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:55,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:47:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:47:55,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:47:55,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868011091] [2022-03-19 06:47:55,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868011091] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:55,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:55,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 06:47:55,849 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:47:55,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [187026542] [2022-03-19 06:47:55,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [187026542] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:55,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:55,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 06:47:55,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501678238] [2022-03-19 06:47:55,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:47:55,855 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 06:47:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:55,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 06:47:55,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 06:47:55,888 INFO L87 Difference]: Start difference. First operand has 240 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 200 states have internal predecessors, (284), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) 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) [2022-03-19 06:47:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:47:56,684 INFO L93 Difference]: Finished difference Result 417 states and 628 transitions. [2022-03-19 06:47:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 06:47:56,687 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 [2022-03-19 06:47:56,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:47:56,705 INFO L225 Difference]: With dead ends: 417 [2022-03-19 06:47:56,705 INFO L226 Difference]: Without dead ends: 259 [2022-03-19 06:47:56,712 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 [2022-03-19 06:47:56,715 INFO L912 BasicCegarLoop]: 297 mSDtfsCounter, 328 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:47:56,717 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 444 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:47:56,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-19 06:47:56,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2022-03-19 06:47:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 176 states have (on average 1.4943181818181819) internal successors, (263), 192 states have internal predecessors, (263), 39 states have call successors, (39), 17 states have call predecessors, (39), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-19 06:47:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2022-03-19 06:47:56,781 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2022-03-19 06:47:56,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:47:56,781 INFO L478 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2022-03-19 06:47:56,781 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) [2022-03-19 06:47:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2022-03-19 06:47:56,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-19 06:47:56,783 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:47:56,783 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] [2022-03-19 06:47:56,783 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 06:47:56,783 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:47:56,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:47:56,784 INFO L85 PathProgramCache]: Analyzing trace with hash -225403307, now seen corresponding path program 1 times [2022-03-19 06:47:56,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:56,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1118943154] [2022-03-19 06:47:56,785 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:47:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash -225403307, now seen corresponding path program 2 times [2022-03-19 06:47:56,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:47:56,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799507010] [2022-03-19 06:47:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:47:56,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:47:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:47:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:47:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:47:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:47:56,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:47:56,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799507010] [2022-03-19 06:47:56,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799507010] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:56,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:56,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:47:56,964 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:47:56,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1118943154] [2022-03-19 06:47:56,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1118943154] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:56,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:56,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:47:56,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934316219] [2022-03-19 06:47:56,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:47:56,965 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:47:56,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:56,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:47:56,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:47:56,966 INFO L87 Difference]: Start difference. First operand 231 states and 326 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) [2022-03-19 06:47:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:47:57,739 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2022-03-19 06:47:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:47:57,740 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 [2022-03-19 06:47:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:47:57,742 INFO L225 Difference]: With dead ends: 410 [2022-03-19 06:47:57,743 INFO L226 Difference]: Without dead ends: 349 [2022-03-19 06:47:57,743 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 [2022-03-19 06:47:57,744 INFO L912 BasicCegarLoop]: 359 mSDtfsCounter, 386 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:47:57,745 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 472 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:47:57,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-03-19 06:47:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2022-03-19 06:47:57,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 239 states have (on average 1.393305439330544) internal successors, (333), 243 states have internal predecessors, (333), 38 states have call successors, (38), 23 states have call predecessors, (38), 26 states have return successors, (44), 40 states have call predecessors, (44), 29 states have call successors, (44) [2022-03-19 06:47:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2022-03-19 06:47:57,794 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2022-03-19 06:47:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:47:57,795 INFO L478 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2022-03-19 06:47:57,795 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) [2022-03-19 06:47:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2022-03-19 06:47:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-19 06:47:57,797 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:47:57,797 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] [2022-03-19 06:47:57,797 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 06:47:57,797 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:47:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:47:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash -809602478, now seen corresponding path program 1 times [2022-03-19 06:47:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:57,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1037057505] [2022-03-19 06:47:57,802 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:47:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -809602478, now seen corresponding path program 2 times [2022-03-19 06:47:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:47:57,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527237016] [2022-03-19 06:47:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:47:57,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:47:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:57,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:47:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:47:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:57,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:47:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:47:57,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:47:57,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527237016] [2022-03-19 06:47:57,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527237016] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:57,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:57,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:47:57,967 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:47:57,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1037057505] [2022-03-19 06:47:57,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1037057505] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:57,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:57,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:47:57,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309925501] [2022-03-19 06:47:57,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:47:57,968 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:47:57,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:57,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:47:57,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:47:57,969 INFO L87 Difference]: Start difference. First operand 304 states and 415 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) [2022-03-19 06:47:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:47:58,464 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2022-03-19 06:47:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:47:58,465 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 [2022-03-19 06:47:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:47:58,467 INFO L225 Difference]: With dead ends: 487 [2022-03-19 06:47:58,467 INFO L226 Difference]: Without dead ends: 368 [2022-03-19 06:47:58,468 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 [2022-03-19 06:47:58,469 INFO L912 BasicCegarLoop]: 267 mSDtfsCounter, 410 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:47:58,469 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 366 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 06:47:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-03-19 06:47:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2022-03-19 06:47:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 280 states have (on average 1.3857142857142857) internal successors, (388), 282 states have internal predecessors, (388), 34 states have call successors, (34), 23 states have call predecessors, (34), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-03-19 06:47:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2022-03-19 06:47:58,503 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2022-03-19 06:47:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:47:58,503 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2022-03-19 06:47:58,503 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) [2022-03-19 06:47:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2022-03-19 06:47:58,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-19 06:47:58,505 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:47:58,505 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] [2022-03-19 06:47:58,505 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 06:47:58,506 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:47:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:47:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1415760533, now seen corresponding path program 1 times [2022-03-19 06:47:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:58,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1682265596] [2022-03-19 06:47:58,507 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:47:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1415760533, now seen corresponding path program 2 times [2022-03-19 06:47:58,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:47:58,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568894949] [2022-03-19 06:47:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:47:58,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:47:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:47:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:58,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:47:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:47:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:47:58,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:47:58,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568894949] [2022-03-19 06:47:58,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568894949] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:58,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:58,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:47:58,641 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:47:58,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1682265596] [2022-03-19 06:47:58,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1682265596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:58,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:58,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:47:58,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468603772] [2022-03-19 06:47:58,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:47:58,642 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:47:58,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:47:58,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:47:58,643 INFO L87 Difference]: Start difference. First operand 344 states and 466 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) [2022-03-19 06:47:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:47:59,187 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2022-03-19 06:47:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:47:59,188 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 [2022-03-19 06:47:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:47:59,191 INFO L225 Difference]: With dead ends: 347 [2022-03-19 06:47:59,191 INFO L226 Difference]: Without dead ends: 343 [2022-03-19 06:47:59,191 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 [2022-03-19 06:47:59,192 INFO L912 BasicCegarLoop]: 268 mSDtfsCounter, 189 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:47:59,192 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 393 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:47:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-19 06:47:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2022-03-19 06:47:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 280 states have (on average 1.3785714285714286) internal successors, (386), 281 states have internal predecessors, (386), 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) [2022-03-19 06:47:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2022-03-19 06:47:59,237 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2022-03-19 06:47:59,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:47:59,237 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2022-03-19 06:47:59,237 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) [2022-03-19 06:47:59,238 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2022-03-19 06:47:59,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-19 06:47:59,240 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:47:59,240 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] [2022-03-19 06:47:59,240 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 06:47:59,240 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:47:59,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:47:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash 605107567, now seen corresponding path program 1 times [2022-03-19 06:47:59,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:59,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [598671876] [2022-03-19 06:47:59,241 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:47:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash 605107567, now seen corresponding path program 2 times [2022-03-19 06:47:59,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:47:59,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996661938] [2022-03-19 06:47:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:47:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:47:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:59,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:47:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:47:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:59,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:47:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 06:47:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:47:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:47:59,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:47:59,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996661938] [2022-03-19 06:47:59,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996661938] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:59,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:59,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:47:59,388 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:47:59,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [598671876] [2022-03-19 06:47:59,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [598671876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:47:59,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:47:59,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:47:59,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840829456] [2022-03-19 06:47:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:47:59,389 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:47:59,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:47:59,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:47:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:47:59,390 INFO L87 Difference]: Start difference. First operand 343 states and 463 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) [2022-03-19 06:48:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:00,129 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2022-03-19 06:48:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 06:48:00,129 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 [2022-03-19 06:48:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:00,132 INFO L225 Difference]: With dead ends: 394 [2022-03-19 06:48:00,132 INFO L226 Difference]: Without dead ends: 325 [2022-03-19 06:48:00,132 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 [2022-03-19 06:48:00,133 INFO L912 BasicCegarLoop]: 306 mSDtfsCounter, 603 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:00,133 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 583 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:48:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-19 06:48:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2022-03-19 06:48:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 246 states have (on average 1.3699186991869918) internal successors, (337), 247 states have internal predecessors, (337), 30 states have call successors, (30), 21 states have call predecessors, (30), 27 states have return successors, (39), 36 states have call predecessors, (39), 24 states have call successors, (39) [2022-03-19 06:48:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2022-03-19 06:48:00,170 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2022-03-19 06:48:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:00,171 INFO L478 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2022-03-19 06:48:00,171 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) [2022-03-19 06:48:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2022-03-19 06:48:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-19 06:48:00,173 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:00,173 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] [2022-03-19 06:48:00,173 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 06:48:00,173 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:00,173 INFO L85 PathProgramCache]: Analyzing trace with hash -447308474, now seen corresponding path program 1 times [2022-03-19 06:48:00,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:00,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1717868621] [2022-03-19 06:48:00,174 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:00,174 INFO L85 PathProgramCache]: Analyzing trace with hash -447308474, now seen corresponding path program 2 times [2022-03-19 06:48:00,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:00,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975163304] [2022-03-19 06:48:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 06:48:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:48:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:00,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:00,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975163304] [2022-03-19 06:48:00,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975163304] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:00,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:00,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:48:00,431 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:00,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1717868621] [2022-03-19 06:48:00,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1717868621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:00,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:00,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:48:00,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016247330] [2022-03-19 06:48:00,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:00,433 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:48:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:00,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:48:00,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:48:00,433 INFO L87 Difference]: Start difference. First operand 304 states and 406 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) [2022-03-19 06:48:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:01,382 INFO L93 Difference]: Finished difference Result 334 states and 440 transitions. [2022-03-19 06:48:01,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:48:01,382 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 [2022-03-19 06:48:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:01,384 INFO L225 Difference]: With dead ends: 334 [2022-03-19 06:48:01,384 INFO L226 Difference]: Without dead ends: 325 [2022-03-19 06:48:01,385 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 [2022-03-19 06:48:01,386 INFO L912 BasicCegarLoop]: 255 mSDtfsCounter, 1079 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:01,386 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 500 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:48:01,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-19 06:48:01,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2022-03-19 06:48:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 260 states have (on average 1.3615384615384616) internal successors, (354), 260 states have internal predecessors, (354), 30 states have call successors, (30), 21 states have call predecessors, (30), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-03-19 06:48:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 425 transitions. [2022-03-19 06:48:01,423 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 425 transitions. Word has length 45 [2022-03-19 06:48:01,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:01,424 INFO L478 AbstractCegarLoop]: Abstraction has 320 states and 425 transitions. [2022-03-19 06:48:01,424 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) [2022-03-19 06:48:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 425 transitions. [2022-03-19 06:48:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-19 06:48:01,425 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:01,425 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] [2022-03-19 06:48:01,426 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 06:48:01,426 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:01,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:01,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1360970565, now seen corresponding path program 1 times [2022-03-19 06:48:01,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:01,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [25539387] [2022-03-19 06:48:01,427 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1360970565, now seen corresponding path program 2 times [2022-03-19 06:48:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:01,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490073052] [2022-03-19 06:48:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:01,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:01,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 06:48:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:48:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:01,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:01,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490073052] [2022-03-19 06:48:01,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490073052] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:01,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:01,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:48:01,679 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:01,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [25539387] [2022-03-19 06:48:01,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [25539387] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:01,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:01,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:48:01,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111988995] [2022-03-19 06:48:01,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:01,679 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:48:01,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:48:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:48:01,680 INFO L87 Difference]: Start difference. First operand 320 states and 425 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) [2022-03-19 06:48:02,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:02,583 INFO L93 Difference]: Finished difference Result 330 states and 433 transitions. [2022-03-19 06:48:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:48:02,585 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 [2022-03-19 06:48:02,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:02,587 INFO L225 Difference]: With dead ends: 330 [2022-03-19 06:48:02,587 INFO L226 Difference]: Without dead ends: 325 [2022-03-19 06:48:02,587 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:48:02,588 INFO L912 BasicCegarLoop]: 256 mSDtfsCounter, 783 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:02,588 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 423 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:48:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-19 06:48:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2022-03-19 06:48:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 260 states have (on average 1.3576923076923078) internal successors, (353), 260 states have internal predecessors, (353), 30 states have call successors, (30), 21 states have call predecessors, (30), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-03-19 06:48:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 424 transitions. [2022-03-19 06:48:02,629 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 424 transitions. Word has length 46 [2022-03-19 06:48:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:02,629 INFO L478 AbstractCegarLoop]: Abstraction has 320 states and 424 transitions. [2022-03-19 06:48:02,629 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) [2022-03-19 06:48:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 424 transitions. [2022-03-19 06:48:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-19 06:48:02,631 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:02,631 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] [2022-03-19 06:48:02,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 06:48:02,631 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:02,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash 548356508, now seen corresponding path program 1 times [2022-03-19 06:48:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:02,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [495302333] [2022-03-19 06:48:02,633 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash 548356508, now seen corresponding path program 2 times [2022-03-19 06:48:02,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:02,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700014426] [2022-03-19 06:48:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:02,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:02,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 06:48:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:48:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:02,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700014426] [2022-03-19 06:48:02,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700014426] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:02,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:02,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:48:02,778 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [495302333] [2022-03-19 06:48:02,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [495302333] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:02,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:02,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:48:02,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056054013] [2022-03-19 06:48:02,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:02,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:48:02,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:02,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:48:02,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:48:02,780 INFO L87 Difference]: Start difference. First operand 320 states and 424 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) [2022-03-19 06:48:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:03,206 INFO L93 Difference]: Finished difference Result 338 states and 446 transitions. [2022-03-19 06:48:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 06:48:03,207 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 [2022-03-19 06:48:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:03,209 INFO L225 Difference]: With dead ends: 338 [2022-03-19 06:48:03,209 INFO L226 Difference]: Without dead ends: 272 [2022-03-19 06:48:03,209 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:48:03,210 INFO L912 BasicCegarLoop]: 250 mSDtfsCounter, 581 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:03,210 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 356 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 06:48:03,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-03-19 06:48:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 242. [2022-03-19 06:48:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 198 states have (on average 1.378787878787879) internal successors, (273), 201 states have internal predecessors, (273), 27 states have call successors, (27), 19 states have call predecessors, (27), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 06:48:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2022-03-19 06:48:03,242 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 47 [2022-03-19 06:48:03,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:03,242 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2022-03-19 06:48:03,242 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) [2022-03-19 06:48:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2022-03-19 06:48:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 06:48:03,244 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:03,244 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] [2022-03-19 06:48:03,244 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 06:48:03,244 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:03,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash 916659597, now seen corresponding path program 1 times [2022-03-19 06:48:03,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:03,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [124349382] [2022-03-19 06:48:03,245 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash 916659597, now seen corresponding path program 2 times [2022-03-19 06:48:03,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:03,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760286406] [2022-03-19 06:48:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:03,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:03,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 06:48:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:03,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:48:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 06:48:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:03,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760286406] [2022-03-19 06:48:03,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760286406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:03,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:03,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:48:03,375 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:03,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [124349382] [2022-03-19 06:48:03,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [124349382] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:03,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:03,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:48:03,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528943645] [2022-03-19 06:48:03,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:03,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:48:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:48:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:48:03,377 INFO L87 Difference]: Start difference. First operand 242 states and 321 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) [2022-03-19 06:48:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:03,922 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2022-03-19 06:48:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 06:48:03,923 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 [2022-03-19 06:48:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:03,924 INFO L225 Difference]: With dead ends: 270 [2022-03-19 06:48:03,924 INFO L226 Difference]: Without dead ends: 240 [2022-03-19 06:48:03,925 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 [2022-03-19 06:48:03,926 INFO L912 BasicCegarLoop]: 243 mSDtfsCounter, 339 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:03,926 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 506 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:48:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-03-19 06:48:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-03-19 06:48:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 197 states have (on average 1.3705583756345177) internal successors, (270), 199 states have internal predecessors, (270), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 06:48:03,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2022-03-19 06:48:03,964 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2022-03-19 06:48:03,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:03,964 INFO L478 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2022-03-19 06:48:03,964 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) [2022-03-19 06:48:03,964 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2022-03-19 06:48:03,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-19 06:48:03,965 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:03,965 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:48:03,966 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 06:48:03,966 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:03,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:03,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1556296422, now seen corresponding path program 1 times [2022-03-19 06:48:03,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:03,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1055020006] [2022-03-19 06:48:03,967 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1556296422, now seen corresponding path program 2 times [2022-03-19 06:48:03,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:03,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415718565] [2022-03-19 06:48:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:03,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:04,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:04,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:48:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 06:48:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:04,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:04,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415718565] [2022-03-19 06:48:04,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415718565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:04,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:04,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:48:04,163 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:04,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1055020006] [2022-03-19 06:48:04,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1055020006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:04,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:04,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:48:04,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326062509] [2022-03-19 06:48:04,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:04,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:48:04,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:04,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:48:04,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:48:04,165 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:48:04,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:04,945 INFO L93 Difference]: Finished difference Result 284 states and 365 transitions. [2022-03-19 06:48:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 06:48:04,946 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-03-19 06:48:04,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:04,948 INFO L225 Difference]: With dead ends: 284 [2022-03-19 06:48:04,948 INFO L226 Difference]: Without dead ends: 243 [2022-03-19 06:48:04,949 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-03-19 06:48:04,949 INFO L912 BasicCegarLoop]: 252 mSDtfsCounter, 655 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:04,949 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 593 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:48:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-03-19 06:48:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2022-03-19 06:48:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 199 states have internal predecessors, (268), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 06:48:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2022-03-19 06:48:04,977 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 51 [2022-03-19 06:48:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:04,978 INFO L478 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2022-03-19 06:48:04,978 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:48:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2022-03-19 06:48:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 06:48:04,979 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:04,979 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] [2022-03-19 06:48:04,979 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 06:48:04,979 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash 460482069, now seen corresponding path program 1 times [2022-03-19 06:48:04,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:04,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1975574417] [2022-03-19 06:48:04,980 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:04,981 INFO L85 PathProgramCache]: Analyzing trace with hash 460482069, now seen corresponding path program 2 times [2022-03-19 06:48:04,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:04,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531941333] [2022-03-19 06:48:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:04,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:05,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:48:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:05,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 06:48:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:05,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:05,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531941333] [2022-03-19 06:48:05,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531941333] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:05,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:05,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:48:05,160 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:05,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1975574417] [2022-03-19 06:48:05,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1975574417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:05,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:05,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:48:05,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359885092] [2022-03-19 06:48:05,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:05,160 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:48:05,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:05,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:48:05,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:48:05,161 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:48:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:05,932 INFO L93 Difference]: Finished difference Result 272 states and 349 transitions. [2022-03-19 06:48:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:48:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-03-19 06:48:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:05,934 INFO L225 Difference]: With dead ends: 272 [2022-03-19 06:48:05,934 INFO L226 Difference]: Without dead ends: 253 [2022-03-19 06:48:05,935 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-03-19 06:48:05,935 INFO L912 BasicCegarLoop]: 238 mSDtfsCounter, 655 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:05,935 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 562 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:48:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-03-19 06:48:05,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 243. [2022-03-19 06:48:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 200 states have (on average 1.36) internal successors, (272), 202 states have internal predecessors, (272), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 06:48:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 319 transitions. [2022-03-19 06:48:05,972 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 319 transitions. Word has length 53 [2022-03-19 06:48:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:05,972 INFO L478 AbstractCegarLoop]: Abstraction has 243 states and 319 transitions. [2022-03-19 06:48:05,972 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:48:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 319 transitions. [2022-03-19 06:48:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 06:48:05,973 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:05,973 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] [2022-03-19 06:48:05,973 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 06:48:05,974 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:05,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1533662637, now seen corresponding path program 1 times [2022-03-19 06:48:05,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:05,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [588416491] [2022-03-19 06:48:05,974 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1533662637, now seen corresponding path program 2 times [2022-03-19 06:48:05,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:05,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705075317] [2022-03-19 06:48:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:05,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:06,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:06,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:48:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 06:48:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:06,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:06,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705075317] [2022-03-19 06:48:06,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705075317] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:06,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:06,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:48:06,155 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:06,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [588416491] [2022-03-19 06:48:06,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [588416491] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:06,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:06,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:48:06,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792740327] [2022-03-19 06:48:06,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:06,156 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:48:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:06,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:48:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:48:06,157 INFO L87 Difference]: Start difference. First operand 243 states and 319 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:48:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:07,142 INFO L93 Difference]: Finished difference Result 284 states and 365 transitions. [2022-03-19 06:48:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:48:07,143 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2022-03-19 06:48:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:07,144 INFO L225 Difference]: With dead ends: 284 [2022-03-19 06:48:07,144 INFO L226 Difference]: Without dead ends: 240 [2022-03-19 06:48:07,145 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:48:07,145 INFO L912 BasicCegarLoop]: 234 mSDtfsCounter, 451 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:07,146 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 572 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:48:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-03-19 06:48:07,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2022-03-19 06:48:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 195 states have (on average 1.3435897435897435) internal successors, (262), 197 states have internal predecessors, (262), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 06:48:07,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 309 transitions. [2022-03-19 06:48:07,179 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 309 transitions. Word has length 53 [2022-03-19 06:48:07,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:07,180 INFO L478 AbstractCegarLoop]: Abstraction has 238 states and 309 transitions. [2022-03-19 06:48:07,180 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:48:07,180 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 309 transitions. [2022-03-19 06:48:07,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 06:48:07,181 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:07,181 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] [2022-03-19 06:48:07,181 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 06:48:07,181 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:07,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:07,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1386969835, now seen corresponding path program 1 times [2022-03-19 06:48:07,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:07,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [168437708] [2022-03-19 06:48:07,182 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:07,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1386969835, now seen corresponding path program 2 times [2022-03-19 06:48:07,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:07,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379475200] [2022-03-19 06:48:07,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:07,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:48:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 06:48:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:07,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:07,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379475200] [2022-03-19 06:48:07,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379475200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:07,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:07,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:48:07,355 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:07,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [168437708] [2022-03-19 06:48:07,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [168437708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:07,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:07,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:48:07,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681702748] [2022-03-19 06:48:07,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:07,355 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:48:07,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:07,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:48:07,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:48:07,356 INFO L87 Difference]: Start difference. First operand 238 states and 309 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:48:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:07,999 INFO L93 Difference]: Finished difference Result 250 states and 321 transitions. [2022-03-19 06:48:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:48:07,999 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2022-03-19 06:48:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:08,000 INFO L225 Difference]: With dead ends: 250 [2022-03-19 06:48:08,000 INFO L226 Difference]: Without dead ends: 210 [2022-03-19 06:48:08,001 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:48:08,001 INFO L912 BasicCegarLoop]: 244 mSDtfsCounter, 433 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:08,001 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 905 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:48:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-03-19 06:48:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-03-19 06:48:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.345029239766082) internal successors, (230), 173 states have internal predecessors, (230), 24 states have call successors, (24), 17 states have call predecessors, (24), 14 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2022-03-19 06:48:08,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 273 transitions. [2022-03-19 06:48:08,033 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 273 transitions. Word has length 53 [2022-03-19 06:48:08,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:08,033 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 273 transitions. [2022-03-19 06:48:08,033 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:48:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 273 transitions. [2022-03-19 06:48:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 06:48:08,034 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:08,034 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] [2022-03-19 06:48:08,034 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 06:48:08,034 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash -438914869, now seen corresponding path program 1 times [2022-03-19 06:48:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [43094734] [2022-03-19 06:48:08,035 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash -438914869, now seen corresponding path program 2 times [2022-03-19 06:48:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:08,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128750106] [2022-03-19 06:48:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:08,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:48:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:08,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:08,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128750106] [2022-03-19 06:48:08,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128750106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:08,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:08,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:48:08,212 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:08,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [43094734] [2022-03-19 06:48:08,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [43094734] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:08,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:08,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:48:08,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608839845] [2022-03-19 06:48:08,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:08,212 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 06:48:08,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:08,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 06:48:08,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:48:08,213 INFO L87 Difference]: Start difference. First operand 210 states and 273 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:48:08,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:08,861 INFO L93 Difference]: Finished difference Result 226 states and 289 transitions. [2022-03-19 06:48:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:48:08,862 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-03-19 06:48:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:08,863 INFO L225 Difference]: With dead ends: 226 [2022-03-19 06:48:08,863 INFO L226 Difference]: Without dead ends: 205 [2022-03-19 06:48:08,863 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:48:08,864 INFO L912 BasicCegarLoop]: 214 mSDtfsCounter, 366 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:08,864 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 840 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:48:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-03-19 06:48:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-03-19 06:48:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 167 states have (on average 1.347305389221557) internal successors, (225), 169 states have internal predecessors, (225), 23 states have call successors, (23), 17 states have call predecessors, (23), 14 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-03-19 06:48:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 266 transitions. [2022-03-19 06:48:08,890 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 266 transitions. Word has length 54 [2022-03-19 06:48:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:08,890 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 266 transitions. [2022-03-19 06:48:08,890 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:48:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 266 transitions. [2022-03-19 06:48:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-19 06:48:08,891 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:08,891 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] [2022-03-19 06:48:08,891 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 06:48:08,892 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash 432963036, now seen corresponding path program 1 times [2022-03-19 06:48:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:08,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [695635960] [2022-03-19 06:48:08,892 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:08,893 INFO L85 PathProgramCache]: Analyzing trace with hash 432963036, now seen corresponding path program 2 times [2022-03-19 06:48:08,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:08,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867718086] [2022-03-19 06:48:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:08,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 06:48:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:48:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:48:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:09,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:09,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867718086] [2022-03-19 06:48:09,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867718086] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:09,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:09,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:48:09,057 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:09,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [695635960] [2022-03-19 06:48:09,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [695635960] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:09,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:09,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:48:09,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263086960] [2022-03-19 06:48:09,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:09,058 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:48:09,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:09,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:48:09,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:48:09,058 INFO L87 Difference]: Start difference. First operand 205 states and 266 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) [2022-03-19 06:48:09,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:09,617 INFO L93 Difference]: Finished difference Result 263 states and 337 transitions. [2022-03-19 06:48:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 06:48:09,617 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 [2022-03-19 06:48:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:09,619 INFO L225 Difference]: With dead ends: 263 [2022-03-19 06:48:09,619 INFO L226 Difference]: Without dead ends: 222 [2022-03-19 06:48:09,619 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-03-19 06:48:09,620 INFO L912 BasicCegarLoop]: 203 mSDtfsCounter, 273 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:09,620 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 671 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 06:48:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-03-19 06:48:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2022-03-19 06:48:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.3391812865497077) internal successors, (229), 173 states have internal predecessors, (229), 23 states have call successors, (23), 17 states have call predecessors, (23), 15 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2022-03-19 06:48:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 271 transitions. [2022-03-19 06:48:09,651 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 271 transitions. Word has length 57 [2022-03-19 06:48:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:09,651 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 271 transitions. [2022-03-19 06:48:09,652 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) [2022-03-19 06:48:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 271 transitions. [2022-03-19 06:48:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-19 06:48:09,653 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:09,653 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] [2022-03-19 06:48:09,653 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 06:48:09,653 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:09,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:09,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1039954733, now seen corresponding path program 1 times [2022-03-19 06:48:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:09,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [838787668] [2022-03-19 06:48:09,654 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1039954733, now seen corresponding path program 2 times [2022-03-19 06:48:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:09,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160341187] [2022-03-19 06:48:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:09,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 06:48:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:48:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:48:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:09,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:09,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160341187] [2022-03-19 06:48:09,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160341187] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:09,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:09,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:48:09,838 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:09,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [838787668] [2022-03-19 06:48:09,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [838787668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:09,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:09,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:48:09,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573562025] [2022-03-19 06:48:09,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:09,839 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:48:09,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:09,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:48:09,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:48:09,840 INFO L87 Difference]: Start difference. First operand 210 states and 271 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) [2022-03-19 06:48:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:10,515 INFO L93 Difference]: Finished difference Result 230 states and 294 transitions. [2022-03-19 06:48:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 06:48:10,515 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 [2022-03-19 06:48:10,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:10,517 INFO L225 Difference]: With dead ends: 230 [2022-03-19 06:48:10,517 INFO L226 Difference]: Without dead ends: 223 [2022-03-19 06:48:10,517 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:48:10,518 INFO L912 BasicCegarLoop]: 205 mSDtfsCounter, 200 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:10,518 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 653 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:48:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-03-19 06:48:10,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 211. [2022-03-19 06:48:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 172 states have (on average 1.3372093023255813) internal successors, (230), 174 states have internal predecessors, (230), 23 states have call successors, (23), 17 states have call predecessors, (23), 15 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2022-03-19 06:48:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 272 transitions. [2022-03-19 06:48:10,550 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 272 transitions. Word has length 57 [2022-03-19 06:48:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:10,551 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 272 transitions. [2022-03-19 06:48:10,551 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) [2022-03-19 06:48:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 272 transitions. [2022-03-19 06:48:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 06:48:10,552 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:10,552 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] [2022-03-19 06:48:10,552 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 06:48:10,552 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2132592656, now seen corresponding path program 1 times [2022-03-19 06:48:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:10,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [81189604] [2022-03-19 06:48:10,553 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2132592656, now seen corresponding path program 2 times [2022-03-19 06:48:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:10,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393376306] [2022-03-19 06:48:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:10,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:10,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:48:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:48:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:48:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:10,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:10,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393376306] [2022-03-19 06:48:10,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393376306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:10,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:10,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 06:48:10,771 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:10,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [81189604] [2022-03-19 06:48:10,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [81189604] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:10,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:10,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 06:48:10,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694742141] [2022-03-19 06:48:10,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:10,772 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 06:48:10,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:10,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 06:48:10,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-19 06:48:10,773 INFO L87 Difference]: Start difference. First operand 211 states and 272 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:48:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:11,503 INFO L93 Difference]: Finished difference Result 223 states and 284 transitions. [2022-03-19 06:48:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 06:48:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-03-19 06:48:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:11,505 INFO L225 Difference]: With dead ends: 223 [2022-03-19 06:48:11,505 INFO L226 Difference]: Without dead ends: 209 [2022-03-19 06:48:11,505 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:48:11,505 INFO L912 BasicCegarLoop]: 208 mSDtfsCounter, 358 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:11,506 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 916 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:48:11,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-03-19 06:48:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-03-19 06:48:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 171 states have (on average 1.3333333333333333) internal successors, (228), 173 states have internal predecessors, (228), 22 states have call successors, (22), 17 states have call predecessors, (22), 15 states have return successors, (18), 18 states have call predecessors, (18), 16 states have call successors, (18) [2022-03-19 06:48:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 268 transitions. [2022-03-19 06:48:11,554 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 268 transitions. Word has length 56 [2022-03-19 06:48:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:11,554 INFO L478 AbstractCegarLoop]: Abstraction has 209 states and 268 transitions. [2022-03-19 06:48:11,554 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:48:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 268 transitions. [2022-03-19 06:48:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 06:48:11,555 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:11,555 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] [2022-03-19 06:48:11,555 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 06:48:11,556 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1221590652, now seen corresponding path program 1 times [2022-03-19 06:48:11,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:11,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1081561795] [2022-03-19 06:48:11,556 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:11,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1221590652, now seen corresponding path program 2 times [2022-03-19 06:48:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125137688] [2022-03-19 06:48:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:11,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:48:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:11,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 06:48:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:11,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:11,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125137688] [2022-03-19 06:48:11,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125137688] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:11,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:11,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:48:11,746 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:11,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1081561795] [2022-03-19 06:48:11,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1081561795] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:11,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:11,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:48:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662115759] [2022-03-19 06:48:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:11,747 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:48:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:11,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:48:11,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:48:11,748 INFO L87 Difference]: Start difference. First operand 209 states and 268 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:48:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:12,593 INFO L93 Difference]: Finished difference Result 266 states and 329 transitions. [2022-03-19 06:48:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 06:48:12,593 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-03-19 06:48:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:12,595 INFO L225 Difference]: With dead ends: 266 [2022-03-19 06:48:12,595 INFO L226 Difference]: Without dead ends: 249 [2022-03-19 06:48:12,595 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-03-19 06:48:12,596 INFO L912 BasicCegarLoop]: 199 mSDtfsCounter, 629 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:12,596 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 612 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:48:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-03-19 06:48:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 215. [2022-03-19 06:48:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 176 states have (on average 1.3238636363636365) internal successors, (233), 179 states have internal predecessors, (233), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (20), 18 states have call predecessors, (20), 16 states have call successors, (20) [2022-03-19 06:48:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 275 transitions. [2022-03-19 06:48:12,631 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 275 transitions. Word has length 55 [2022-03-19 06:48:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:12,632 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 275 transitions. [2022-03-19 06:48:12,632 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:48:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 275 transitions. [2022-03-19 06:48:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 06:48:12,633 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:12,633 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] [2022-03-19 06:48:12,633 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 06:48:12,633 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:12,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2050869943, now seen corresponding path program 1 times [2022-03-19 06:48:12,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:12,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1626117457] [2022-03-19 06:48:12,634 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:12,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2050869943, now seen corresponding path program 2 times [2022-03-19 06:48:12,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:12,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407388591] [2022-03-19 06:48:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:12,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:48:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:12,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 06:48:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:12,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:12,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407388591] [2022-03-19 06:48:12,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407388591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:12,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:12,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:48:12,827 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:12,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1626117457] [2022-03-19 06:48:12,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1626117457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:12,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:12,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:48:12,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087175730] [2022-03-19 06:48:12,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:12,827 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 06:48:12,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 06:48:12,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:48:12,828 INFO L87 Difference]: Start difference. First operand 215 states and 275 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:48:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:13,524 INFO L93 Difference]: Finished difference Result 231 states and 291 transitions. [2022-03-19 06:48:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:48:13,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-03-19 06:48:13,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:13,526 INFO L225 Difference]: With dead ends: 231 [2022-03-19 06:48:13,526 INFO L226 Difference]: Without dead ends: 193 [2022-03-19 06:48:13,526 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:48:13,527 INFO L912 BasicCegarLoop]: 204 mSDtfsCounter, 242 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:13,527 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 824 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:48:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-03-19 06:48:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-03-19 06:48:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 158 states have internal predecessors, (193), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (18), 17 states have call predecessors, (18), 15 states have call successors, (18) [2022-03-19 06:48:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 232 transitions. [2022-03-19 06:48:13,556 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 232 transitions. Word has length 55 [2022-03-19 06:48:13,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:13,556 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 232 transitions. [2022-03-19 06:48:13,557 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:48:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 232 transitions. [2022-03-19 06:48:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-19 06:48:13,557 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:13,558 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] [2022-03-19 06:48:13,558 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 06:48:13,558 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:13,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1918234721, now seen corresponding path program 1 times [2022-03-19 06:48:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:13,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1232096939] [2022-03-19 06:48:13,559 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1918234721, now seen corresponding path program 2 times [2022-03-19 06:48:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:13,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15769325] [2022-03-19 06:48:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:48:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:48:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:48:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 06:48:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:48:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:48:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:48:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:48:13,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:48:13,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15769325] [2022-03-19 06:48:13,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15769325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:13,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:13,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:48:13,741 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:48:13,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1232096939] [2022-03-19 06:48:13,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1232096939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:48:13,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:48:13,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:48:13,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842581328] [2022-03-19 06:48:13,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:48:13,742 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:48:13,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:13,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:48:13,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:48:13,742 INFO L87 Difference]: Start difference. First operand 193 states and 232 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) [2022-03-19 06:48:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:48:14,148 INFO L93 Difference]: Finished difference Result 229 states and 273 transitions. [2022-03-19 06:48:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 06:48:14,149 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 [2022-03-19 06:48:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:48:14,150 INFO L225 Difference]: With dead ends: 229 [2022-03-19 06:48:14,150 INFO L226 Difference]: Without dead ends: 187 [2022-03-19 06:48:14,150 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 [2022-03-19 06:48:14,152 INFO L912 BasicCegarLoop]: 172 mSDtfsCounter, 193 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:48:14,152 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 533 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 06:48:14,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-03-19 06:48:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-03-19 06:48:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 149 states have (on average 1.2348993288590604) internal successors, (184), 152 states have internal predecessors, (184), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (18), 17 states have call predecessors, (18), 15 states have call successors, (18) [2022-03-19 06:48:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2022-03-19 06:48:14,186 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 58 [2022-03-19 06:48:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:48:14,186 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2022-03-19 06:48:14,186 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) [2022-03-19 06:48:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2022-03-19 06:48:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 06:48:14,187 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:48:14,188 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] [2022-03-19 06:48:14,188 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 06:48:14,188 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:48:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:48:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1199488421, now seen corresponding path program 1 times [2022-03-19 06:48:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:48:14,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1944645829] [2022-03-19 06:48:14,189 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:48:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1199488421, now seen corresponding path program 2 times [2022-03-19 06:48:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:48:14,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987220092] [2022-03-19 06:48:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:48:14,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:48:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 06:48:14,206 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 06:48:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 06:48:14,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 06:48:14,272 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-19 06:48:14,272 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-19 06:48:14,277 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 06:48:14,278 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 06:48:14,280 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-03-19 06:48:14,283 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 06:48:14,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 06:48:14 BoogieIcfgContainer [2022-03-19 06:48:14,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 06:48:14,315 INFO L158 Benchmark]: Toolchain (without parser) took 20439.68ms. Allocated memory was 170.9MB in the beginning and 381.7MB in the end (delta: 210.8MB). Free memory was 118.7MB in the beginning and 168.1MB in the end (delta: -49.3MB). Peak memory consumption was 162.9MB. Max. memory is 8.0GB. [2022-03-19 06:48:14,315 INFO L158 Benchmark]: CDTParser took 1.29ms. Allocated memory is still 170.9MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 06:48:14,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.24ms. Allocated memory is still 170.9MB. Free memory was 118.7MB in the beginning and 140.3MB in the end (delta: -21.6MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. [2022-03-19 06:48:14,315 INFO L158 Benchmark]: Boogie Preprocessor took 95.84ms. Allocated memory is still 170.9MB. Free memory was 140.3MB in the beginning and 137.3MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-19 06:48:14,316 INFO L158 Benchmark]: RCFGBuilder took 781.89ms. Allocated memory is still 170.9MB. Free memory was 137.3MB in the beginning and 104.3MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-03-19 06:48:14,319 INFO L158 Benchmark]: TraceAbstraction took 19061.93ms. Allocated memory was 170.9MB in the beginning and 381.7MB in the end (delta: 210.8MB). Free memory was 103.7MB in the beginning and 168.1MB in the end (delta: -64.4MB). Peak memory consumption was 146.3MB. Max. memory is 8.0GB. [2022-03-19 06:48:14,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29ms. Allocated memory is still 170.9MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 488.24ms. Allocated memory is still 170.9MB. Free memory was 118.7MB in the beginning and 140.3MB in the end (delta: -21.6MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 95.84ms. Allocated memory is still 170.9MB. Free memory was 140.3MB in the beginning and 137.3MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 781.89ms. Allocated memory is still 170.9MB. Free memory was 137.3MB in the beginning and 104.3MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 19061.93ms. Allocated memory was 170.9MB in the beginning and 381.7MB in the end (delta: 210.8MB). Free memory was 103.7MB in the beginning and 168.1MB in the end (delta: -64.4MB). Peak memory consumption was 146.3MB. 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 - CounterExampleResult [Line: 1013]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int KernelMode ; [L24] int Executive ; [L25] int DevicePowerState ; [L26] int s ; [L27] int UNLOADED ; [L28] int NP ; [L29] int DC ; [L30] int SKIP1 ; [L31] int SKIP2 ; [L32] int MPR1 ; [L33] int MPR3 ; [L34] int IPC ; [L35] int pended ; [L36] int compFptr ; [L37] int compRegistered ; [L38] int lowerDriverReturn ; [L39] int setEventCalled ; [L40] int customIrp ; [L41] int myStatus ; [L294] int status ; [L295] int irp = __VERIFIER_nondet_int() ; [L296] int pirp ; [L297] int pirp__IoStatus__Status ; [L298] int irp_choice = __VERIFIER_nondet_int() ; [L299] int devobj = __VERIFIER_nondet_int() ; [L300] int __cil_tmp8 ; [L302] KernelMode = 0 [L303] Executive = 0 [L304] DevicePowerState = 1 [L305] s = 0 [L306] UNLOADED = 0 [L307] NP = 0 [L308] DC = 0 [L309] SKIP1 = 0 [L310] SKIP2 = 0 [L311] MPR1 = 0 [L312] MPR3 = 0 [L313] IPC = 0 [L314] pended = 0 [L315] compFptr = 0 [L316] compRegistered = 0 [L317] lowerDriverReturn = 0 [L318] setEventCalled = 0 [L319] customIrp = 0 [L320] myStatus = 0 [L324] status = 0 [L325] pirp = irp [L326] CALL _BLAST_init() [L61] UNLOADED = 0 [L62] NP = 1 [L63] DC = 2 [L64] SKIP1 = 3 [L65] SKIP2 = 4 [L66] MPR1 = 5 [L67] MPR3 = 6 [L68] IPC = 7 [L69] s = UNLOADED [L70] pended = 0 [L71] compFptr = 0 [L72] compRegistered = 0 [L73] lowerDriverReturn = 0 [L74] setEventCalled = 0 [L75] customIrp = 0 [L326] RET _BLAST_init() [L328] COND TRUE status >= 0 [L329] s = NP [L330] customIrp = 0 [L331] setEventCalled = customIrp [L332] lowerDriverReturn = setEventCalled [L333] compRegistered = lowerDriverReturn [L334] pended = compRegistered [L335] pirp__IoStatus__Status = 0 [L336] myStatus = 0 [L337] COND FALSE !(irp_choice == 0) [L342] CALL stub_driver_init() [L47] s = NP [L48] pended = 0 [L49] compFptr = 0 [L50] compRegistered = 0 [L51] lowerDriverReturn = 0 [L52] setEventCalled = 0 [L53] customIrp = 0 [L342] RET stub_driver_init() [L345] COND FALSE !(status < 0) [L349] int tmp_ndt_1; [L350] tmp_ndt_1 = __VERIFIER_nondet_int() [L351] COND FALSE !(tmp_ndt_1 == 0) [L354] int tmp_ndt_2; [L355] tmp_ndt_2 = __VERIFIER_nondet_int() [L356] COND FALSE !(tmp_ndt_2 == 1) [L359] int tmp_ndt_3; [L360] tmp_ndt_3 = __VERIFIER_nondet_int() [L361] COND TRUE tmp_ndt_3 == 3 [L388] CALL, EXPR KbFilter_PnP(devobj, pirp) [L80] int devExt ; [L81] int irpStack ; [L82] int status ; [L83] int event = __VERIFIER_nondet_int() ; [L84] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L85] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L86] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L87] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L88] int devExt__Started ; [L89] int devExt__Removed ; [L90] int devExt__SurpriseRemoved ; [L91] int Irp__IoStatus__Status ; [L92] int Irp__IoStatus__Information ; [L93] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L94] int irpSp ; [L95] int nextIrpSp ; [L96] int nextIrpSp__Control ; [L97] int irpSp___0 ; [L98] int irpSp__Context ; [L99] int irpSp__Control ; [L100] long __cil_tmp23 ; [L103] status = 0 [L104] devExt = DeviceObject__DeviceExtension [L105] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L106] COND FALSE !(irpStack__MinorFunction == 0) [L109] COND FALSE !(irpStack__MinorFunction == 23) [L112] COND TRUE irpStack__MinorFunction == 2 [L236] devExt__Removed = 1 [L237] COND TRUE s == NP [L238] s = SKIP1 [L245] Irp__CurrentLocation ++ [L246] Irp__Tail__Overlay__CurrentStackLocation ++ [L247] CALL IofCallDriver(devExt__TopOfStack, Irp) [L483] int returnVal2 ; [L484] int compRetStatus ; [L485] int lcontext = __VERIFIER_nondet_int() ; [L486] long long __cil_tmp7 ; [L489] COND FALSE !(\read(compRegistered)) [L502] int tmp_ndt_6; [L503] tmp_ndt_6 = __VERIFIER_nondet_int() [L504] COND FALSE !(tmp_ndt_6 == 0) [L507] int tmp_ndt_7; [L508] tmp_ndt_7 = __VERIFIER_nondet_int() [L509] COND TRUE tmp_ndt_7 == 1 [L518] returnVal2 = -1073741823 [L528] COND FALSE !(s == NP) [L532] COND FALSE !(s == MPR1) [L541] COND TRUE s == SKIP1 [L542] s = SKIP2 [L543] lowerDriverReturn = returnVal2 [L551] return (returnVal2); [L247] RET IofCallDriver(devExt__TopOfStack, Irp) [L248] status = 0 [L290] return (status); [L388] RET, EXPR KbFilter_PnP(devobj, pirp) [L388] status = KbFilter_PnP(devobj, pirp) [L412] COND FALSE !(pended == 1) [L420] COND FALSE !(pended == 1) [L428] COND TRUE s != UNLOADED [L429] COND TRUE status != -1 [L430] COND FALSE !(s != SKIP2) [L440] COND FALSE !(pended == 1) [L447] COND FALSE !(s == DC) [L452] COND TRUE status != lowerDriverReturn [L453] CALL errorFn() [L1013] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 19 procedures, 243 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.0s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9173 SdHoareTripleChecker+Valid, 10.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9153 mSDsluCounter, 11724 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6850 mSDsCounter, 1761 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15219 IncrementalHoareTripleChecker+Invalid, 16980 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1761 mSolverCounterUnsat, 4874 mSDtfsCounter, 15219 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 20 MinimizatonAttempts, 231 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-19 06:48:14,360 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...